JP7390065B2 - Exhaust device for cooking utensils and cooking method - Google Patents

Description

The present invention relates to an exhaust device for cooking utensils and a cooking method.

In recent years, convenience stores, supermarkets, department stores, etc. have been equipped with cooking utensils on their floors to serve (sell) freshly cooked food to customers.

When cooking in such a store, it is sometimes necessary to prevent odors and the like produced during cooking from wafting into the store.

As a conventional technique, for example, there is a cooking device that covers cooking utensils and exhausts the inside of a space (cooking chamber) whose opening is closed with a door. In this cooking device, once the door is closed, odors will no longer leak outside from the opening, and odors generated inside will be exhausted to the outside.

Japanese Patent Application Publication No. 6-74507

However, in the prior art, the blower is always operated. For this reason, energy saving, which has been strongly desired in recent years, has not been taken into consideration.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an exhaust device for cooking utensils that can suppress odors from drifting in the room where the cooking utensils are installed, and also to meet the demand for energy conservation. The aim is to provide a new cooking method.

As a result of intensive research to solve the above problems, the present inventors discovered that an energy saving effect can be obtained by controlling the blower in accordance with the opening/closing state of the door installed in the cooking room. reached.

That is, the present invention includes a cooking chamber for storing cooking utensils therein, a door provided in the cooking chamber, and a mechanism for exhausting the air inside the cooking chamber into or outside the room in which the cooking chamber is placed. a blower connected to the exhaust duct; a control unit that changes the operation of the blower in accordance with the open/closed state of the door; an open/close sensor and a full open sensor that detect the open/closed state of the door and whether the door is fully open; an opening sensor that detects the opening degree of the door, and the control unit controls the blower to stop or have a first air volume when the door is closed, and to Until the door is fully opened, the air volume of the blower is controlled to increase as the degree of opening of the door increases, and after the door is fully opened, the air volume of the blower is controlled to be larger than the first air volume. The control unit determines that the door starts to open when the signal from the opening/closing sensor changes from closed to open, and determines the opening of the door from the opening sensor. The exhaust device for cooking utensils receives a signal indicating that the door is fully open from the fully open sensor, and controls the blower.

The present invention also provides a cooking chamber for storing cooking utensils therein, a door provided in the cooking chamber, and a door for exhausting the air inside the cooking chamber into or outside the room in which the cooking chamber is placed. a control unit that changes the operation of the blower in accordance with the open/closed state of the door; an open/close sensor and a full open sensor that detect the open/closed state of the door and whether the door is fully open; , an opening sensor that detects the opening degree of the door, and the control unit controls the blower to stop or have a first air volume when the door is closed, and controls the blower to stop or have a first air volume when the door starts to open. From then until the door is fully opened, the air volume of the blower is controlled to increase as the opening degree of the door increases, and the air volume when the door is fully open is set as a third air volume. After the door is closed, the blower is controlled to have a second air volume that is larger than the first air volume and smaller than the third air volume, and the control unit controls the air blower so that the signal from the opening/closing sensor indicates that the door is closed. The door starts to open when the door changes from to open, receives a signal indicating the opening degree of the door from the opening sensor, receives a signal indicating that the door is fully open from the fully open sensor, and starts the blower. This is an exhaust system for cooking utensils.

The present invention also provides a cooking chamber for storing cooking utensils therein, a door provided in the cooking chamber, and a door for exhausting the air inside the cooking chamber into or outside the room in which the cooking chamber is placed. and a control section that changes the operation of the blower in accordance with the open/closed state of the door, and the control section controls the blower when the door is closed. The air blower is controlled to stop or have a first air volume, and from the time the door starts to open until the door is fully opened, the air volume of the blower is controlled to increase as the degree of opening of the door increases, The air volume when the door is fully open is set as a third air volume, and after the door is fully opened, the blower is controlled to have a second air volume that is greater than the first air volume and smaller than the third air volume. , an exhaust device for cooking utensils.

According to the present invention, it is possible to prevent odor from wafting from the cooking chamber while the door is closed, and the operation of the blower is changed according to the open/closed state of the door, so that the odor can be exhausted. Compared to the case where the blower is always operated at a constant air volume, power consumption can be reduced.

1 is a front view of the cooking utensil exhaust device of Embodiment 1. FIG. 1 is a perspective view of the cooking utensil exhaust device of Embodiment 1. FIG. 1 is a sectional view of the cooking utensil exhaust device of Embodiment 1. FIG. FIG. 2 is a cross-sectional view showing an example in which a cooking utensil exhaust device is arranged for indoor circulation. FIG. 2 is a cross-sectional view showing an example in which a cooking utensil exhaust device is arranged for outdoor exhaust. 2 is a circuit diagram for implementing control of control example 1. FIG. FIG. 7 is a circuit diagram for implementing control of control example 2. FIG. FIG. 7 is a circuit diagram for implementing control of control example 3. FIG. FIG. 7 is a front view of an exhaust device for cooking utensils according to a second embodiment. FIG. 3 is a sectional view of an exhaust device for cooking utensils according to a second embodiment. 12 is a circuit diagram for implementing control of control example 4. FIG. FIG. 7 is a sectional view of an exhaust device for cooking utensils according to Embodiment 3. 12 is a block diagram for explaining control of control example 5. FIG. FIG. 7 is a front view of an exhaust device for cooking utensils according to a fourth embodiment. FIG. 7 is a sectional view of an exhaust device for cooking utensils according to a fourth embodiment. FIG. 7 is a block diagram for explaining a control system of control example 6. FIG. 12 is a flowchart showing a control procedure of control example 6. FIG. 12 is a block diagram for explaining a control system of control example 7. FIG. It is a flowchart which shows a control procedure. FIG. 7 is a sectional view of an exhaust device for cooking utensils according to a sixth embodiment. It is a sectional view of the exhaust device for cooking utensils of Embodiment 7. It is a sectional view of the exhaust device for cooking utensils of Embodiment 8.

Embodiments of the present invention will be described in detail below with reference to the drawings. However, the present invention is not limited only to the following embodiments. Note that each drawing is exaggerated for convenience of explanation, and the dimensional ratio of each component in each drawing may be different from the actual size. Furthermore, when the embodiments of the present invention are described with reference to the drawings, the same elements are given the same reference numerals in the explanation of the drawings, and redundant explanation will be omitted.

[Embodiment 1]
<Exhaust device for cooking utensils>
FIG. 1 is a front view of the cooking utensil exhaust device of Embodiment 1, FIG. 2 is a perspective view of the cooking utensil exhaust device of Embodiment 1, and FIG. 3 is a sectional view of the cooking utensil exhaust device of Embodiment 1.

The exhaust device 101 for cooking utensils according to the first embodiment includes a pedestal 11 , a cooking chamber 12 on the pedestal 11 , and a blower 20 installed above the cooking chamber 12 .

The cooking chamber 12 is a space covered by a front panel 13a with a door 14, side panels 13b (both sides), a back panel 13c, and a ceiling plate 13d. The front panel 13a covers only the portion where the blower 20 is installed and is open at the bottom. A door 14 is attached to this opening so that it can be opened and closed. The side panel 13b, the back panel 13c, and the ceiling plate 13d are each connected to the casing (described later) of the blower 20 without any gaps. An indicator lamp 18 indicating the operating state of the blower 20 is provided on the front panel 13a. Further, the front panel 13a is also provided with an alarm lamp 18e that indicates that there is a malfunction in the cooking utensil exhaust device 101 (the same applies to other embodiments). The alarm lamp 18e lights up when an operation different from the control content is detected, such as when the blower 20 does not operate even though the door 14 is opened, or when the blower 20 does not stop even when the door 14 is closed. It is.

The door 14 slides up and down inside the front panel 13a, opens when raised manually using the handle 15, and closes when lowered. A packing 16 is provided at the lower end of the door 14. The packing 16 improves the airtightness within the cooking chamber 12 when the door 14 is closed, and also softens the impact when the door 14 is closed. The packing 16 can be made of an elastic material such as rubber or resin, and is preferably heat-resistant and fire-resistant.

A blower 20 is provided in the upper part of the cooking chamber 12. The blower 20 exhausts the air in the cooking chamber 12. The illustrated blower 20 includes a motor 21, a sirocco fan 22, and a housing 35 that houses these. The blower 20 has a sirocco fan 22 attached to the shaft of a motor 21, and as the motor 21 rotates, the sirocco fan 22 rotates to suck in air from the cooking chamber 12 and exhaust it from an exhaust port 23. Note that the blower 20 is not limited to such a structure. For example, a propeller fan may be used. Further, the housing 35 is not used alone as a blower, but may be used in common with the side panel 13b, the back panel 13c, the ceiling plate 13d in the cooking chamber 12, and the like.

A grease filter 30 is attached to the upper part of the cooking chamber 12 on the upstream side of the airflow generated by the air blower 20 so as to cover the suction port of the air blower 20. The grease filter 30 roughly removes oil and fat from the air sucked by the blower 20, and also prevents the blower 20 from sucking in large particles.

Various filters are attached to the exhaust port 23 on the downstream side of the blower 20 so as to cover the exhaust port 23. In order from the top, there are an air filter 31 that removes fine dust and dirt, a deodorizing filter 32 that removes odors, a smoke removing filter 33 that removes smoke, and an oil adsorption filter 34 that removes oil. It is preferable to install all four of these filters, but not all are necessary. For example, the deodorizing filter 32 may be provided to prevent odors from the food being cooked or before and after being cooked from being emitted into the exhaust gas.

Note that although these filters are attached to the downstream side of the blower 20, they are not limited to this position. Various filters may be attached, for example, to the upstream side of the blower 20 (for example, at the grease filter portion in the figure).

A shutter 25 that closes off the exhaust side is provided downstream of the various filters. By closing this shutter 25, the exhaust side in the cooking chamber 12 is closed. The shutter 25 may be electrically operated or may be opened and closed by airflow. In the case of the electric shutter 25, it opens and closes in response to a signal from a control unit 50, which will be described later. In the case of the shutter 25 that opens and closes due to the airflow, when the blower 20 starts, it opens due to the pressure of the airflow, and when the blower 20 stops and the airflow disappears, the shutter 25 closes due to its own weight. Therefore, the shutter 25, which opens and closes depending on the airflow, opens when the blower 20 operates and closes when the blower 20 stops.

A fire alarm 41 and a fire extinguisher 42 are provided on the ceiling plate 13d of the cooking chamber 12 toward the inside of the cooking chamber 12. The fire alarm 41 detects fire and issues an alarm. The fire alarm 41 is linked with a fire extinguisher 42, and a fire extinguisher is sprayed at the same time as the fire alarm 41 issues an alarm. The fire extinguisher 42 is connected to a fire extinguishing agent tank 43 provided on the back side (behind the ceiling) of the ceiling board 13d as seen from the cooking chamber 12, and sprays a fire extinguishing agent toward the inside of the cooking chamber 12. Since the cooking utensil exhaust device 101 has a door 14, the inside of the cooking chamber 12 cannot be seen when the door 14 is closed. Therefore, in case a fire breaks out inside the cooking chamber 12, a fire alarm 41 and a fire extinguisher 42 are provided.

Further, the fire alarm 41 may, for example, stop the blower 20 at the same time as the fire alarm is issued. To do this, for example, the blower 20 is forcibly stopped by shutting off the main switch or breaker provided in the cooking utensil exhaust device 101. Further, when an electric shutter is used as the shutter 25, the control unit 50 stops the blower 20 and closes the shutter 25 as well. The electric shutter is biased in the closing direction by a biasing force, and when the blower is activated, the shutter is opened electrically against the biasing force. In this case, when the power is lost, the biasing force causes it to be in the closed state. Further, a backup battery may be provided to operate the electric shutter even when power is lost. Thereby, in the event that a fire occurs inside the cooking chamber 12, flames and smoke can be prevented or suppressed from going out of the cooking chamber 12 through the exhaust duct.

Note that the fire alarm 41 and fire extinguisher 42 may not be provided. However, as mentioned above, since the interior of the cooking chamber 12 cannot be seen, it is preferable to install only the fire alarm 41.

A control unit 50 is provided in the upper part of the casing 35 that covers the blower 20, in a part that corresponds to the ceiling when viewed from the cooking chamber 12. An opening/closing sensor 51 is attached to a portion where the door 14 and the pedestal 11 are in contact. The opening/closing sensor 51 is connected to the control section 50 by a signal line.

The control unit 50 operates the blower 20 according to the signal from the opening/closing sensor 51. The details of the control will be described later. It is preferable that the circuit board and the like of the control unit 50 be housed in a control box and fixed to the upper part of the casing 35. The reason why the control unit 50 (or the control box) is placed in this position is to place the control unit 50 near the blower 20 to facilitate wiring between them during construction. Further, for example, the blower 20 can use its entire housing 35, for example, an existing range hood. In that case, in existing range hoods, the control unit 50 is located inside the housing 35 of the range hood, so the control unit 50 is located in this manner. Of course, the arrangement of the control section 50 is not limited to such a position, and may be arranged anywhere.

The opening/closing sensor 51 detects the opening/closing state of the door 14. The door 14 is opened and closed by moving up and down. Therefore, the opening/closing sensor 51 detects that the door 14 is in the closed state if the lower end of the door 14 is in contact with the pedestal 11, and detects that the door 14 is in the open state if the lower end of the door 14 is not in contact with the pedestal 11. The time when the signal from the opening/closing sensor 51 changes from closed to open is defined as the time when the door 14 starts to open. Note that the present invention is not limited to this, and when the door moves from a completely closed state to a direction in which the door opens, the door may start opening at the time when the opening/closing sensor first detects the operation of the door.

In the figure, the opening/closing sensor 51 is placed at a position that is easy to understand for the sake of explanation, but in reality, it may be placed at any position as long as it can detect the opening/closing of the door 14. In particular, depending on the structure of the opening/closing sensor 51 used, it can be placed in the ceiling of the cooking chamber 12, making wiring with the control section 50 easy.

The opening/closing sensor 51 can be, for example, a switch that is turned off (or on) when the lower end of the door 14 touches the pedestal 11 and turned on (or turned off) when the lower end of the door 14 is separated from the pedestal 11.

Although details will be described later, depending on the control content, a fully open sensor 52 may be provided to detect when the door 14 is fully opened.

The fully open sensor 52 may be, for example, a switch that is placed at a position where the top end of the door 14 touches when the door 14 is fully opened, and is turned on (or off) when the top end of the door 14 comes into contact with it, and turns off (or on) when the top end of the door 14 leaves. can.

In addition to such a switch, the open/close sensor 51 and the fully open sensor 52 can be, for example, an optical sensor, a magnetic sensor, or another proximity sensor. Alternatively, a roller or a gear may be driven by the movement of the door 14, and the open/closed state of the door 14 may be detected from the amount of movement of the roller or gear. In the case of an opening/closing sensor (opening sensor) using such rollers, gears, etc., the opening degree of the door 14 (the amount the door is opened) can also be detected. The details of control using the opening degree will also be described later.

A cooking utensil 200 is housed inside the cooking chamber 12. The cooking appliance 200 may house, for example, an automatic fryer, a roaster, a rice cooker, a boiling pot, or even various cooking robots. An example of an automatic fryer is shown in each figure.

In the first embodiment, a structure is shown in which the cooking utensil 200 (in this case, an automatic fryer) is placed on the pedestal 11, but the structure is not limited to this. For example, in the case of an automatic fryer, the oil pot part is placed on the pedestal 11. It may also be a structure embedded inside (downwards). Other cooking utensils 200 may also have a structure in which all or part of them is embedded within the pedestal 11.

Further, although not shown, a main switch, a breaker, etc. for turning on/off power to the cooking utensil exhaust device 101 may be provided (hereinafter, the same applies to other embodiments).

<Installation example>
The exhaust device 101 for cooking utensils can be adapted to both indoor circulation in which exhaust gas from the cooking chamber 12 is circulated within the room, and outdoor exhaust in which exhaust air is exhausted outside the room. The cooking utensil exhaust device 101 is installed in a room in the cooking chamber 12 where cooking is performed using the cooking utensils 200. Examples of rooms in which the device is installed are inside stores such as convenience stores, supermarkets, drug stores, restaurants, and department stores, or in exhibition halls.

(Example of indoor circulation)
FIG. 4 is a sectional view showing an example in which a cooking utensil exhaust device is arranged for indoor circulation.

As shown in FIG. 4, when the cooking utensil exhaust device 101 is arranged for indoor circulation, the exhaust port 23 of the blower 20 is connected to the exhaust duct 501 for indoor circulation. The exhaust duct 501 for indoor circulation is disposed in a portion corresponding to the ceiling of the cooking chamber 12, and is exhausted into the room from the upper part of the front panel 13a. For this purpose, an exhaust port 502 to which an exhaust duct 501 is connected is provided at the top of the front panel 13a.

In the case of indoor circulation, the air from the cooking chamber 12 is exhausted into a room in which the cooking utensil exhaust device 101 containing the cooking utensils 200 is installed. Odors coming out of the cooking chamber 12 are removed by a deodorizing filter 32. Therefore, even when circulating indoors, the odor from the cooking chamber 12 can be prevented or suppressed from drifting into the room.

In addition, when the air is circulated indoors, the cooled and heated air in the room where the cooking utensil exhaust device 101 is installed does not go out of the room and returns to the room as it is. In this way, air conditioning energy loss can be reduced, and therefore the entire room in which the cooking chamber 12 is placed can save energy.

Note that although an example is shown here in which the cooking utensil exhaust device 101 is installed along the wall 500, the cooking utensil exhaust device 101 may be installed away from the wall 500. Furthermore, the exhaust duct 501 may exhaust air from the side or back side, or upward, instead of exhausting from the front.

(Example of outdoor exhaust)
FIG. 5 is a sectional view showing an example in which a cooking utensil exhaust device is arranged for outdoor exhaust.

As shown in FIG. 5, when the cooking utensil exhaust device 101 is arranged for outdoor exhaust, the exhaust port 23 of the blower 20 is connected to an exhaust duct 503 for outdoor exhaust. This exhaust duct 503 exits to the outside using a facility opening provided on a wall 500 or the like of the room in which the cooking utensil exhaust device 101 and the like are installed in order to directly exhaust the air outside.

In the case of outdoor exhaust, the air from the cooking chamber 12 is exhausted outside the room in which the cooking utensil exhaust device 101 containing the cooking utensil 200 is installed. Therefore, it is possible to prevent or suppress the odor emitted from the cooking chamber 12 from drifting into the room.

Note that in the case of outdoor exhaust, especially in the case of exhaust to the outdoors, various filters including the deodorizing filter 32 may not be provided, but it is preferable to provide these filters in consideration of the neighborhood.

Also, for outdoor exhaust, the cooking utensil exhaust device 101 may be installed away from the wall 500. However, for outdoor exhaust, it is necessary to connect the exhaust duct 501 to a facility entrance on the wall so that the exhaust can exit the room.

<Control example>
The opening/closing state of the door 14 and the corresponding control of the blower 20 will be explained.

(Control example 1)
Control example 1 is a control example in which the blower 20 is stopped when the door 14 is in a closed state, and the blower 20 is operated at a constant air volume after the door 14 starts to open.

FIG. 6 is a circuit diagram for implementing control of control example 1.

Control example 1 has a simple configuration in which a single-phase alternating current motor M (AC) is used as the motor 21 of the blower 20, and a push button switch with a b contact, for example, is used as the opening/closing sensor 51. Therefore, in control example 1, the switch of the opening/closing sensor 51 also serves as the control section 50. Note that a capacitor C for determining the rotation direction is connected to the single-phase AC motor. In the case of this control example 1, the full-open sensor 52 may not be provided.

In this control example 1, a push button switch with a b contact as an opening/closing sensor 51 is connected to one of the wirings connecting the motor 21 and an alternating current power source AC (for example, a 100V commercial power source). Further, an indicator lamp 18 is connected between the motor 21 and the AC power source AC, and the indicator lamp 18 lights up when electricity flows through the wiring between the motor 21 and the AC power source.

A push button switch with a b contact is provided at a position sandwiched between the lower end of the door 14 and the pedestal 11. When the door 14 is closed, the button on the pushbutton switch is pressed to turn it off. When the door 14 opens even a little and its lower end leaves the pedestal 11, the button returns and turns on. The door 14 begins to open when this switch (signal from the opening/closing sensor 51) changes from off to on.

At the same time as the opening/closing sensor 51 is turned on, the motor 21 rotates and the blower 20 starts exhausting air. At this time, the air volume of the blower 20 is set such that when the door 14 is fully opened, the wind speed at the opening of the door 14 is 0.2 m/s or more. As for the wind speed at the opening, for example, it is preferable that the wind speed is measured at multiple points on the plane of the opening, and the wind speed at all measurement points is 0.2 m/s or more (the same applies to other examples below). . By setting the wind speed to such a speed, it is possible to prevent or suppress odor leakage due to the door 14 being opened while the door 14 is open (after the door 14 has started to open).

In this control example 1, the motor 21 does not operate while the door 14 is closed. That is, when the door 14 is in the closed state, the operation of the blower 20 is stopped. Therefore, when there is no need to touch the food or cooking utensils 200 in the cooking chamber 12, such as during cooking, the power supply to the blower 20 can be stopped by keeping the door 14 closed. This makes it possible to reduce power consumption compared to a conventional device that constantly operates a blower.

In control example 1, the motor 21 is started at the same time as the door 14 is opened. For this reason, there is a possibility that odor leakage may occur, albeit slightly, from the start of the motor 21 until it reaches a predetermined rotational speed (wind speed of 0.2 m/s or more at the opening when fully opened). However, the amount is small enough that it does not waft into the room, so it has a sufficient odor control effect.

Further, when the door 14 is in the closed state, the gasket 16 increases the degree of sealing in the cooking chamber 12, so that odor leakage does not occur.

Here, the energy saving effect will be explained using a specific example.

For example, if there is no panel surrounding the door 14 or the cooking utensil 200, and you want to prevent odors from drifting into the room by constantly exhausting the air, the required exhaust air volume is 600 m3/h. If the machine is operated for 16 hours/day (24 hours) and fries food 25 times, the total displacement will be 8000 m3/day.

On the other hand, in the case of Control Example 1 in Embodiment 1, the time for opening the door 14 and exhausting the air is the time for taking out the fried food and setting the next fried food, which is 5 minutes. When frying 25 times, 5 minutes x 25 times = 125 min (2.1 h). When the exhaust air volume is 100 m3/h, the total exhaust volume is 210 m3/day.

In this way, in the case of the first embodiment, the exhaust air volume can be reduced to 210/8000×100=2.6%. Therefore, power consumption for exhausting can also be reduced.

Further, even if the door is opened to exhaust air, the cooking utensil 200 is inside the cooking chamber 12 covered with a panel, so in the first embodiment, the amount of exhaust air can be reduced compared to a case where the door is opened. This makes it possible to downsize the blower 20 and to reduce the power consumption of the equipment accordingly.

Additionally, since the amount of exhaust air is reduced, the filter becomes less dirty and the filter replacement cycle becomes longer. It also extends the life of the filter. Therefore, it can also contribute to reducing running costs.

Although it is not shown in the circuit diagram, if an electric shutter is used for the shutter 25, it is recommended to wire it so that the electric shutter can be opened and closed in synchronization with the turning on and off of the motor 21 of the blower 20 ( The same applies to other embodiments below).

(Control example 2)
Control example 2 is a control example in which the blower 20 is operated at the first air volume when the door 14 is closed, and the blower 20 is operated at the second air volume after the door 14 starts to open. Here, the first air volume is less than the second air volume, and the second air volume is the air volume at which the wind speed at the opening of the door 14 is 0.2 m/s or more when the door 14 is fully opened. Here, it is preferable that the first air volume is an air volume that makes the inside of the cooking chamber 12 a negative pressure by exhausting the inside of the cooking chamber 12 .

FIG. 7 is a circuit diagram for implementing control of control example 2.

Control example 2 has a simple configuration in which a single-phase alternating current motor M (AC) is used as the motor 21 of the blower 20, and a two-contact push button switch, for example, is used as the opening/closing sensor 51. Therefore, in control example 2, the switch of the opening/closing sensor 51 also serves as the control section 50. The single-phase alternating current motor M (AC) can change the rotational speed of the motor 21 by supplying power to wires with different numbers of turns of the motor coil.

In this control example 2, the motor wiring Lo is used to set the first air volume, and the motor wiring Mi is used to set the second air volume.

A two-contact push button switch serving as the opening/closing sensor 51 is provided at a position sandwiched between the lower end of the door 14 and the pedestal 11. When the door 14 is closed, the button of the push button switch is pressed and the wiring Lo side is turned on. On the other hand, when the door 14 is opened, the wiring Mi side is turned on.

Furthermore, indicator lamps 18a and 18b are connected to the respective wirings Lo and Mi, respectively. Indicator lamps 18a and 18b are lamps of different colors. Instead of the indicator lamp, a display panel may be provided to display the air volume "standard", air volume "strong", etc., and the display may be changed according to the operation of each switch.

In this control example 2, the motor 21 operates at the first air volume even when the door 14 is closed. Then, when the switch is turned over, the second air volume becomes larger. Therefore, the air in the cooking chamber 12 is exhausted even when the door 14 is closed. After the door 14 begins to open, the motor 21 speeds up to the second air volume to match the air volume when the door is fully opened.

The difference between the first air volume and the second air volume is, for example, approximately 1 to 60% when the second air volume is 100%. This is because if the ratio of the first air volume to the second air volume exceeds 60%, the difference will be close and the energy saving effect will be small. On the other hand, if the first air volume is set to 1% or less, it will not be possible to maintain negative pressure in the cooking chamber 12 at all times with the door 14 closed.

In this way, in control example 2, the air in the cooking chamber 12 is always exhausted with a small air volume, so no odor leakage occurs even at the moment the door 14 starts to open. On the other hand, since the first air volume causes the motor to rotate at a lower speed than the second air volume, power consumption can be reduced accordingly.

In addition, in control example 2, even when the door is closed, the inside of the cooking chamber 12 is kept under negative pressure, so even if there is no gasket 16 and a small gap is created when the door 14 is closed, odor leakage can be prevented. can.

(Control example 3)
Control example 3 is a control example using the fully open sensor 52 of the door 14, in which the blower 20 is stopped when the door 14 is closed, and the blower 20 is operated at the third air volume from when the door 14 starts to open until it is fully opened. , this is an example of control in which operation is performed at the second air volume after full opening. Here, the second air volume is less than the third air volume, and the second air volume is the air volume at which the wind speed at the opening of the door 14 is 0.2 m/s or more when the door 14 is fully opened.

FIG. 8 is a circuit diagram for implementing control of control example 3.

Control example 3 has a simple configuration in which a single-phase alternating current motor M (AC) is used as the motor 21 of the blower 20, a push button switch with a B contact is used as the open/close sensor 51, and a 2-contact switch is used as the fully open sensor 52. be. Therefore, in control example 3, the switches of the open/close sensor 51 and the fully open sensor 52 also serve as the control section 50. The single-phase alternating current motor M (AC) can change the rotational speed of the motor 21 by supplying power to wires with different numbers of turns of the motor coil.

In this control example 3, the motor wiring Mi is used to set the second air volume, and the motor wiring Hi is used to set the third air volume. The difference between the second air volume and the third air volume may be, for example, about 120 to 160% of the third air volume when the second air volume is 100%. The third air volume may be any larger than the air volume when the door is fully opened, but if it is less than 120%, even if the air volume is increased, there is no significant change in the amount of air actually sucked in, so there is no point. On the other hand, if the air volume is increased beyond 160%, the amount of air sucked increases, but since air can be sucked in sufficiently even with a lower air volume, the power consumption only increases, which is excessive.

A b-contact push button switch serving as the opening/closing sensor 51 is provided at a position sandwiched between the lower end of the door 14 and the pedestal 11. When the door 14 opens even a little and its lower end leaves the pedestal 11, the button of the push button switch returns and turns on. At this time, the two-contact switch of the fully open sensor 52 has been switched to the wiring Hi side. Therefore, when the switch of the opening/closing sensor 51 is turned on, electricity flows to the wiring Hi side of the motor 21, and the motor 21 is started and simultaneously controlled to reach the third air volume.

Thereafter, when the door 14 is fully opened, the switch of the fully open sensor 52 is switched to the wiring Mi side. At this time, the switch of the opening/closing sensor 51 remains on. Thereby, after the door is fully opened, electricity flows to the wiring Mi side of the motor 21 and the air volume is controlled to be the second air volume.

Furthermore, indicator lamps 18b and 18c are connected to the respective wirings Mi and Hi, respectively. Indicator lamps 18b and 18c are lamps of different colors. Instead of the indicator lamp, a display panel may be provided to display the air volume "standard", air volume "strong", etc., and the display may be changed according to the operation of each switch.

In this control example 3, the motor 21 is stopped when the door 14 is closed. For this reason, there is a possibility that odor may accumulate inside the cooking chamber 12. When the door 14 starts to open, the odor inside the cooking chamber 12 is exhausted at once at a third air volume to prevent odor leakage. Even if the second air volume is set after the door 14 is fully opened, most of the odor inside the cooking chamber 12 is exhausted, so there is no odor leakage.

In addition, in control example 3 as well as in control example 2, the air may be constantly exhausted with the first air volume smaller than the second air volume while the door 14 is closed. In this case, the wiring Lo of the motor 21 is used. The ratio of the first air volume, the second air volume, and the third air volume may be, for example, when the third air volume is 100%, the first air volume may be 10 to 30%, and the second air volume may be 50 to 60%.

In the above control examples 1 to 3, instead of the AC motor, software control may be performed using, for example, a DC motor, a converter, and a control computer (CPU (Central Processing Unit) or MPU (Micro Processor Unit)). By using a DC motor, power consumption can be further reduced.

Further, although not shown, an opening sensor may be provided to detect how far the door 14 is opened, and the air volume of the blower 20 may be changed depending on the opening degree of the door 14. In that case, if the air volume of the blower 20 is to be changed stepwise, for example, current is caused to flow through the motor wires Lo, Mi, and Hi each time the door 14 is opened stepwise. In addition, when the air volume of the blower 20 is continuously changed in response to the opening of the door 14, for example, a converter changes the voltage according to the degree of opening of the door 14 and supplies the voltage to the DC motor.

[Embodiment 2]
In the second embodiment, although the door 14 is opened and closed manually, a lock part is provided to lock the door 14 to restrict the opening and closing of the door 14, and the operation of the blower 20 is controlled in accordance with the open/closed state of the door 14. Control.

<Exhaust device for cooking utensils>
FIG. 9 is a front view of the cooking utensil exhaust device according to the second embodiment, and FIG. 10 is a sectional view of the cooking utensil exhaust device according to the second embodiment.

The cooking utensil exhaust device 102 of the second embodiment is provided with a lock portion 55 that maintains the closed state of the door 14 and an open button 17 that issues an instruction to open the door 14. The other configurations are the same as in the first embodiment, and the installation example for indoor circulation or outdoor exhaust is also the same as in the first embodiment, so a description thereof will be omitted. Furthermore, since the cooking method is the same as in Embodiment 1, the explanation will be omitted.

In the second embodiment, by providing the lock section 55, when a command to open the door 14 which is manually opened is received from the open button 17, the control section 50 controls the door 14 so that when a predetermined condition is satisfied. It can only be opened. The lock portion 55 has, for example, a structure in which a bolt is inserted into a hole (including a recess) provided in the door 14 when the door 14 is closed. The bolt is operated by, for example, an electromagnetic solenoid, and the electromagnetic solenoid is operated by a command from the control unit 50. The form of the lock portion 55 is not limited to such a form using a bar or an electromagnetic solenoid.

The open button 17 is, for example, a push button switch or a touch sensor switch, and is provided on the front panel 13a. The door 14 can only be opened and closed manually. Therefore, in other words, the open button 17 is a switch that requests permission from the control unit 50 to open the door 14.

Additionally, indicator lamps 19a and 19b are provided on the front panel 13a to indicate whether the door 14 can be opened or closed. For example, when the indicator lamp 19a lights up in blue, it indicates that the door 14 can be opened, and when the indicator lamp 19b lights up in red, it indicates that the door 14 cannot be opened. In place of the indicator lamp, a display panel may be provided that displays "permitted" or "not allowed" to open the door 14.

<Control example>
(Control example 4)
In the control example of the second embodiment (referred to as control example 4), the blower 20 is activated at the same time as an opening instruction is received from the open button 17, and after a certain period of time has elapsed, the lock is unlocked and the door 14 is made ready to be opened. .

FIG. 11 is a circuit diagram for implementing control of control example 4.

In control example 4, a single-phase alternating current motor M (AC) is used as the motor 21 of the blower 20. The open button 17 and the switch of the open/close sensor 51 are interlocked and are provided on the wiring Mi from the alternating current power source (AC) to the motor 21. The switches of the open button 17 and the open/close sensor 51 are both turned on when an open instruction is received from the open button 17. On the other hand, when the open/close sensor 51 turns from on to off, the open button 17 also turns off.

Further, a wiring branched from this wiring Mi enters a timer (TM) 57 and is further connected to an electromagnetic solenoid 58 of the lock portion 55. Further, the output from the timer 57 is also connected to the indicator lamp 19a.

Here, the timer 57 is set in advance to count a certain period of time when electric power is supplied, and after the certain period of time has elapsed, it supplies electric power to the electromagnetic solenoid 58. The timer 57 is not limited to one that measures time, and may be a current delay circuit. The time set in the timer 57 is a time long enough to start the blower 20 and exhaust the odor in the cooking chamber 12. For this purpose, it is preferable that the time is set such that air approximately equivalent to the volume of the cooking chamber 12 can be exhausted. Specifically, 1 to 60 seconds is sufficient, depending on the volume of the cooking chamber 12 and the performance of the blower 20.

The electromagnetic solenoid 58 is, for example, an AC type electromagnetic solenoid 58 of a normally open spring return type (the valve body is released when the current is cut off (here, the bar of the lock part 55 comes out and is locked), and the current is turned off. When the water flows, the valve body closes (here, the bar of the lock portion 55 is retracted and unlocked)).

In control example 4, the opening/closing sensor 51 and the timer 57 serve as the control unit 50.

In this control example 4, when the door 14 is closed, the open button 17 and the switch of the open/close sensor 51 are both in an off state (the state shown in the figure). In this state, when the open button 17 is pressed and an opening instruction is input, both the open button 17 and the open/close sensor 51 are turned on, and the motor 21 is operated. The air volume at this time is the second air volume described in the first embodiment (wind speed of 0.2 m/s or more when fully opened). At the same time, current also flows to the timer 57 and measures a certain period of time. After a certain period of time has been counted, current flows from the timer 57 to the electromagnetic solenoid 58, and the lock portion 55 is unlocked. At the same time, the indicator lamp 19a is energized and lights up, allowing the door to be opened.

After that, the door 14 is opened manually. Even after the door 14 is opened, the exhaust continues at the second air volume.

When the open door 14 is closed, when the door 14 is closed and the switch of the opening/closing sensor 51 is turned off, the associated open button 17 is also turned off. As a result, the energization to the electromagnetic solenoid 58 is also cut off, so that the spring returns the bolt and the locking portion 55 locks the door 14. At the same time, the power to the motor 21 is also cut off, so the blower 20 stops. Further, the indicator lamp 19b is energized and lights up to indicate that the door 14 is locked.

As described above, according to control example 4, in order to open the door 14, the open button 17 is first pressed to exhaust the inside of the cooking chamber 12. At this time, the door 14 cannot be opened because the lock portion 55 is not unlocked. After the inside of the cooking chamber 12 is evacuated, the door 14 can be opened. Therefore, by the time the door 14 is actually opened, most of the odor in the cooking chamber 12 has been exhausted, so no odor will leak out when the door 14 is opened. On the other hand, when the door 14 is closed, the blower 20 stops. Therefore, when the door 14 is closed, the blower 20 consumes no power.

Note that in control example 4 as well, instead of using an AC motor, software control may be performed using, for example, a DC motor, a converter, and a control computer (CPU or MPU). By using a DC motor, power consumption can be further reduced.

Further, in the second embodiment, in addition to the control example 4, the control example 2 of the first embodiment may be combined to continue exhausting at the first air volume at all times when the door is closed. In addition, by combining control example 3, the air is exhausted at the third air volume from the time when the instruction to open the door is given until the lock section 55 is unlocked, and after the lock section 55 is unlocked (or when the opening/closing sensor 51 (after detecting that the door 14 has been opened), the air volume may be controlled to be the second air volume.

Further, in the second embodiment, the inside of the cooking chamber 12 is exhausted from the time when the instruction to open the door is given until the lock part 55 is unlocked. Therefore, by the time the door 14 can be opened, the odor in the cooking chamber 12 is almost gone, depending on the ingredients and the content of cooking. Assuming such a case, the control may be performed, for example, by controlling the third air volume (or the second air volume for a longer period of time than the third air volume) from when the door opening instruction is received until the lock part 55 is unlocked. etc.), and after a predetermined period of time has elapsed, the lock portion 55 is unlocked and the blower 20 is stopped. At this time, even if the door 14 is open, the blower 20 is stopped, but as mentioned above, depending on the ingredients and cooking contents, the odor is almost completely gone from inside the cooking chamber 12, so there is almost no odor. . This makes it possible to further reduce power consumption.

[Embodiment 3]
Embodiment 3, like Embodiment 2, although the opening and closing of the door 14 is manual, the opening and closing of the door 14 is restricted by providing a lock part 55 that locks the door 14, and the opening and closing of the door 14 is controlled manually. The operation of the blower 20 is controlled accordingly.

<Exhaust device for cooking utensils>
FIG. 12 is a sectional view of the exhaust device for cooking utensils according to the third embodiment.

The cooking utensil exhaust system 103 of the third embodiment includes a cooking chamber state detection sensor (hereinafter referred to as the state sensor 61) inside the cooking chamber 12 that detects the state inside the cooking chamber 12. The other configurations are the same as in the second embodiment, and the installation example for indoor circulation or outdoor exhaust is also the same as in the first embodiment, so a description thereof will be omitted. Furthermore, since the cooking method is the same as in Embodiment 1, the explanation will be omitted.

The condition sensor 61 detects at least one of odor in the cooking chamber 12, temperature in the cooking chamber 12, oil in the air, smoke, and pressure in the cooking chamber 12 as the condition in the cooking chamber 12. To detect.

In the third embodiment, the control unit 50 unlocks the lock unit 55 when the detection value detected by the state sensor 61 becomes equal to or less than a predetermined reference value.

Odors are detected by so-called odor sensors. Various odor sensors are commercially available, such as semiconductor type, crystal oscillator type, FET biosensor, membrane type surface stress sensor, etc., and any of them may be used. The control unit 50 compares the value of the odor sensor with a reference value and unlocks the lock unit 55 if the odor becomes less than the reference value.

Temperature is detected by a temperature sensor. A well-known (commercially available) temperature sensor such as an analog type or a digital type may be used. The control unit 50 compares the value of the temperature sensor with a reference value, and unlocks the lock unit 55 if the temperature becomes below the reference value. This is because when the blower 20 is operated, the temperature inside the cooking chamber 12 drops, and the lock part 55 is unlocked based on this, assuming that the odor inside the cooking chamber 12 has been exhausted.

For example, an oil component called oil mist contained in the air is detected. This is because when the blower 20 is operated, the oil content in the air in the cooking chamber 12 is also exhausted, so that the oil content has decreased and the lock part 55 is unlocked assuming that the odor has disappeared.

Smoke is detected by a smoke sensor. A commercially available smoke sensor such as an optical type may be used. This is because when the blower 20 is operated, the smoke in the cooking chamber 12 is also exhausted, so the lock portion 55 is unlocked assuming that the smoke is reduced and the odor is gone.

Pressure is detected by a pressure sensor. A commercially available pressure sensor such as an optical type may be used. This is because when the blower 20 is operated with the door 14 closed, the pressure inside the cooking chamber 12 decreases. When the pressure falls below the reference value, the odor is assumed to have been exhausted and the lock portion 55 is unlocked. Note that the pressure reference value may be set to a low value within normal atmospheric pressure, for example, or a pressure sensor that separately measures the pressure outside the cooking chamber 12 may be provided, or the pressure inside and outside the cooking chamber 12 may be set separately. The pressure inside and outside of the cooking chamber 12 is compared by installing a sensor to detect the difference, and the locking portion 55 is activated when the pressure inside the cooking chamber 12 decreases (or when the pressure difference exceeds a certain percentage). It may be possible to unlock the door.

<Control example>
(Control example 5)
In the control example of the third embodiment (referred to as control example 5), the blower 20 is activated at the same time as an opening instruction is received from the open button 17, and after a certain period of time has elapsed, the lock is unlocked and the door 14 can be opened. .

FIG. 13 is a block diagram for explaining control of control example 5.

In control example 5, a signal from the state sensor 61 enters the control IC 62, and the control IC 62 compares the value detected by the state sensor (Sen) 61 with a predetermined reference value. The control IC 62 causes current to flow to the electromagnetic solenoid 58 when the detected value is less than a reference value. For example, the control IC 62 compares the voltage from the status sensor 61 with a reference voltage. In the case of current, compare it with the reference current. In the case of digital signals, a DSP (Digital Signal Processor) is used as the control IC 62 to compare digital values. Although not shown, the control IC 62 and the status sensor 61 use power converted from alternating current to direct current. The other circuit configurations are the same as those in Control Example 4, so explanations will be omitted.

In control example 5, the control IC 62 serves as the control section 50.

In this control example 5, when the door 14 is closed, the open button 17 and the switch of the open/close sensor 51 are both in the off state (the state shown in the figure). In this state, when the open button 17 is pressed and an opening instruction is input, both the open button 17 and the open/close sensor 51 are turned on, and the motor 21 is operated. The air volume at this time is the second air volume described in the first embodiment (wind speed of 0.2 m/s or more when fully opened).

Thereafter, the control IC 62 compares the detected value with a reference value, and if the detected value is less than the reference value, causes current to flow to the electromagnetic solenoid 58. A current flows through the electromagnetic solenoid 58 and the lock portion 55 is unlocked. At the same time, the indicator lamp 19a is energized and lights up, allowing the door to be opened.

After that, the door 14 is opened manually. Even after the door 14 is opened, the exhaust continues at the second air volume.

When the open door 14 is closed, when the door 14 is closed and the switch of the opening/closing sensor 51 is turned off, the associated open button 17 is also turned off. As a result, the energization to the electromagnetic solenoid 58 is also cut off, so that the spring returns the bolt and the locking portion 55 locks the door 14. At the same time, the power to the motor 21 is also cut off, so the blower 20 stops. Further, the indicator lamp 19b is energized and lights up to indicate that the door 14 is locked.

As described above, according to control example 5, in order to open the door 14, the open button 17 is first pressed, and the inside of the cooking chamber 12 is exhausted. After the status sensor 61 confirms that the inside of the cooking chamber 12 has been reliably evacuated, the door 14 can be opened. Therefore, by the time the door 14 is actually opened, most of the odor in the cooking chamber 12 has been exhausted, so no odor will leak out when the door 14 is opened. On the other hand, when the door 14 is closed, the blower 20 stops. Therefore, when the door 14 is closed, the blower 20 consumes no power.

In addition, in control example 5 as well, instead of the AC motor, software control may be performed using, for example, a DC motor, a converter, and a control computer (CPU or MPU). By using a DC motor, power consumption can be further reduced.

Further, in the fifth embodiment, in addition to the control example 5, the control example 2 of the first embodiment may be combined to always continue exhausting at the first air volume when the door is closed. In addition, by combining control example 3, the air is exhausted at the third air volume from the time when the instruction to open the door is given until the lock section 55 is unlocked, and after the lock section 55 is unlocked (or when the opening/closing sensor 51 (after detecting that the door 14 has been opened), the air volume may be controlled to be the second air volume.

Further, in the third embodiment, the inside of the cooking chamber 12 is monitored by the state sensor 61 between the time when the instruction to open the door is received and the time when the lock part 55 is unlocked to check whether there is no (or little) odor. After checking, the lock portion 55 is unlocked. Therefore, in the third embodiment as well, depending on the ingredients and cooking content, the third air volume (or the second air volume may be lower than the third air volume) after the instruction to open the door is given until the lock part 55 is unlocked. If the odor disappears after a long period of time, etc.), the blower 20 may be stopped at the same time as the lock portion 55 is unlocked. As mentioned above, depending on the ingredients and cooking contents, the odor is almost eliminated from the cooking chamber 12, so there is almost no odor floating around. This makes it possible to further reduce power consumption.

[Embodiment 4]
In the fourth embodiment, the door 14 is fully automatically opened and closed, and the operation of the blower 20 is controlled in accordance with the opening and closing state of the door 14.

<Exhaust device for cooking utensils>
FIG. 14 is a front view of the exhaust device for cooking utensils according to the fourth embodiment. FIG. 15 is a sectional view of the cooking utensil exhaust device according to the fourth embodiment.

The cooking utensil exhaust system 104 of the fourth embodiment has an opening/closing power unit 70 for opening and closing the door. It also has an open button 17a and a close button 17b for issuing instructions to open and close the door. The other configurations are the same as in the third embodiment. However, in the fourth embodiment, the lock portion 55 is not required. In addition, the installation example for indoor circulation or outdoor exhaust is the same as in Embodiment 1, so
Explanation will be omitted. Furthermore, since the cooking method is the same as in Embodiment 1, the explanation will be omitted.

Note that the open/close sensor 51 and the fully open sensor 52 may or may not be provided. If there is an open/close sensor 51 and a fully open sensor 52, the open/closed state and fully open state of the door 14 are detected based on signals from them. If they are not available, the opening/closing motor is configured to automatically stop when the load applied to the opening/closing power unit 70 (specifically, the opening/closing motor) increases. The figure shows a configuration without the open/close sensor 51 and the fully open sensor 52.

In the illustrated case, the opening/closing power section 70 is shown as a rack and pinion. A rack gear 72, a pinion gear 73 meshing with the rack gear 72, and an opening/closing motor 74 are arranged inside the door 14 on both sides. The opening/closing motor 74 is driven by control from the control unit 50, and the door 14 opens and closes. Note that the opening/closing power section 70 is not limited to this, and various methods such as chain winding, ball screw, etc. can be adopted.

Additionally, an indicator lamp 18 is provided to indicate the operating status of the blower 20. When the indicator lamp 18 is lit, it indicates that the blower is operating, and when it is off, it indicates that the blower is stopped.

<Control example>
(Control example 6)
In the control example of the fourth embodiment (referred to as control example 6), the door 14 opens when an open instruction is issued from the open button 17a, and the door 14 is closed when a close instruction is issued from the close button 17b. During this time, the operation of the blower is controlled.

FIG. 16 is a block diagram for explaining the control system of control example 6.

In control example 6, a direct current (DC) motor is used as the motor 21 of the blower 20. The control unit 50 controls the DC motor in accordance with the open/closed state of the door 14. The control unit 50 includes a converter 701 that supplies DC voltage to the DC motor, and a control computer 702 that controls the opening and closing of the door 14 and the output voltage of the converter 701.

Converter 701 converts alternating current (AC) from an alternating current power source into direct current (DC). The converter 701 changes the output voltage (DC) steplessly or stepwise in response to commands from the control computer 702. The rotation speed of a DC motor changes depending on the supplied DC voltage.

The control computer 702 is, for example, a small computer, and is a computer used to control an apparatus, such as a so-called microcomputer (abbreviated as a microcomputer). The control computer 702 has a CPU 711, a ROM 712 that stores programs executed by the CPU 711, and a RAM 713 that serves as a work area for the CPU 711. It is equipped with a nonvolatile memory 714 (eg, EPROM, flash memory, etc.) for storing programs, parameters (eg, reference values, predetermined times), etc., and has a configuration equivalent to that of a general-purpose computer.

The control computer 702 is connected to the open button 17a, the close button 17b, and the opening/closing operation section. In response to instructions from the open button 17a or the close button 17b, the door 14 is opened and closed, and the rotational speed of the motor 21 is controlled. Further, an indicator lamp 18 is connected to the control computer 702, and is turned on at the same time when the control computer 702 operates the blower 20. The indicator lamp 18 may be connected to the wiring of the motor 21 and turned on when current flows through the motor 21.

FIG. 17 is a flowchart showing the control procedure of control example 6.

The CPU 711 controls the opening/closing operation of the door 14 and the operation of the blower 20 by executing a program created based on this procedure.

Before explaining the control procedure, the air volume will be explained. In control example 6, first air volume<second air volume<third air volume. For example, when the third air volume is 100%, the first air volume is 10 to 30%, and the second air volume is 30 to 60%. The air volume when the door is fully opened is set as the second air volume so that the wind speed at the opened part is 0.2 m/s or more.

Explain the control procedure.

The CPU 711 waits for an input from the open button 17a until the open button 17a is pressed while the door 14 is closed (S11).

When the open button 17a is pressed and there is an input (S11: YES), the CPU 711 instructs the converter 701 to output a voltage corresponding to the third air volume (S12). When the door 14 is closed, the motor 21 is stopped (or may be operated at the first air volume). Here, the voltage from the converter 701 starts the motor 21 of the blower 20, and the blower 20 operates at the third air volume. At S12, the indicator lamp 18 is simultaneously turned on (it continues to be lit in the case of the first air volume with the door closed).

Subsequently, the CPU 711 issues a command to the converter 701 and starts clocking (S13). The CPU 711 determines whether a predetermined time has elapsed (S14). Here, the predetermined time is a time long enough to start the blower 20 and exhaust the odor in the cooking chamber 12. For this purpose, it is preferable that the time is set such that air approximately equivalent to the volume of the cooking chamber 12 can be exhausted.

Subsequently, if a predetermined period of time has elapsed (S14: YES), the CPU 711 instructs the converter 701 to output a voltage corresponding to the second air volume (S15). The motor 21 of the blower 20 is decelerated by the voltage from the converter 701, and the blower 20 operates at the second air volume.

Subsequently, the CPU 711 instructs the opening/closing power section 70 to open the door 14 (S16). This command causes the opening/closing motor 74 to rotate in the direction to open the door 14. When the door 14 is fully opened, the opening/closing motor 74 automatically stops.

Subsequently, the CPU 711 waits for an input from the close button 17b (S17). Here (with the door 14 open), if the close button 17b is pressed and input is received (S17: YES), the CPU 711 instructs the opening/closing power section 70 to close the door 14 (S18). This command causes the opening/closing motor 74 to rotate in the direction of closing the door 14. When the door 14 is fully closed, the opening/closing motor 74 automatically stops.

Subsequently, the CPU 711 instructs the converter 701 to stop outputting voltage (or outputting a voltage that corresponds to the first air volume) (S19). By stopping the voltage output from the converter 701, the motor 21 of the blower 20 stops, and the blower 20 stops (or decelerates and operates at the first air volume). After that, the process returns to S11.

As described above, according to control example 6, in order to open the door 14, the open button 17a is pressed, and the inside of the cooking chamber 12 is exhausted. Thereafter, when a predetermined period of time has elapsed, the door 14 is automatically opened. Therefore, by the time the door 14 is opened, most of the odor in the cooking chamber 12 has been exhausted, so no odor will leak out. On the other hand, if the close button is pressed, the door 14 automatically closes and the blower 20 stops (or reaches the first air volume). Therefore, when the door 14 is closed, the blower 20 consumes no power.

In control example 6 as well, the air volume after the input of the open button 17a may be the second air volume. Alternatively, control may be performed using an AC motor.

In addition, in control example 6, since the DC motor is controlled by the control computer 702, the control computer 702 controls the DC motor steplessly, for example, depending on the amount of opening of the door 14 (the amount of rotation of the opening/closing power section 70 or the opening/closing motor 74). The rotational speed of the DC motor may be changed. Thereby, regardless of the degree of opening of the door 14, the wind speed at the opened portion can be kept approximately constant.

Note that the fourth embodiment is provided with an opening/closing power unit 70 that opens and closes the door 14. Therefore, in the fourth embodiment, if the door 14 is open when the fire alarm 41 is triggered, the control section 50 receives the alarm and instructs the opening/closing power section 70 to close the door 14. . This prevents flames and smoke from coming out from the open part of the door in the event of a fire.

[Embodiment 5]
In the fifth embodiment, the door 14 is opened and closed fully automatically, and the operation of the blower 20 is controlled in accordance with the opening/closing state of the door 14 and the state inside the cooking chamber 12 detected by the state sensor 61.

<Exhaust device for cooking utensils>
The configuration of the exhaust device for cooking utensils of Embodiment 5 is the same as that of Embodiment 4, except that a state sensor 61 similar to Embodiment 3 is provided (see FIG. 12, but no lock portion is provided). The state sensor 61 has the same configuration as in Embodiment 3, and the other configurations, installation examples, and cooking methods are the same as in Embodiment 1, so description thereof will be omitted.

<Control example>
(Control example 7)
In the control example of the fifth embodiment (referred to as control example 7), the door 14 opens when an open instruction is issued from the open button 17a, and the door 14 is closed when a close instruction is issued from the close button 17b. During this time, the operation of the blower is controlled.

FIG. 18 is a block diagram for explaining the control system of control example 7. The control system of the fifth embodiment is the same as the control system of the fourth embodiment so as to receive input from the state sensor 61, and the other configurations are the same, so a description thereof will be omitted.

FIG. 19 is a flowchart showing the control procedure. The CPU 711 controls the opening/closing operation of the door 14 and the operation of the blower 20 by executing a program created based on this procedure.

The air volume is the same as control example 6. Moreover, since a part of the control procedure is also the same as control example 6, the same step number (S number) is given and the explanation will be simplified or omitted.

Explain the control procedure.

When the open button is input (S11: YES), the CPU 711 instructs the converter 701 to output a voltage corresponding to the third air volume (S12).

Subsequently, the CPU 711 compares the detection value from the state sensor 61 with the reference value (S24).
). The reference value is stored in nonvolatile memory 714.

The reference value used here may be one predetermined reference value as in the third embodiment, but may also be a value depending on environmental changes. For example, the value of the state sensor 61 before the start of cooking is stored as a reference value, and after cooking, the value of the state sensor 61 is compared with the stored reference value (value before the start of cooking) in S24. It is. For example, since the temperature and pressure vary depending on the weather that day, the condition inside the cooking chamber 12 can be accurately determined based on these factors.

Then, if the detected value is equal to or less than the reference value (S24: YES), the CPU 711 instructs the converter 701 to output a voltage corresponding to the second air volume (S15).

Subsequently, the CPU 711 instructs the opening/closing power section 70 to open the door 14 (S16), and waits for the input of the close button 17b (S17).

After that, when there is an input from the close button 17b (S17: YES), the CPU 711 instructs the opening/closing power section 70 to close the door 14 (S18), and the converter 701 stops the voltage output (or returns to the first air volume). output voltage) (S19). Thereafter, the process returns to S11.

As described above, according to control example 7, in order to open the door 14, the open button 17a is pressed, and the inside of the cooking chamber 12 is exhausted. Thereafter, when the state sensor 61 determines that the odor in the cooking chamber 12 is gone, the door 14 is opened, so that no odor will leak out. On the other hand, if the close button is pressed, the door 14 will automatically close and the blower 20 will stop. Therefore, when the door 14 is closed, the blower 20 consumes no power.

Also in control example 7, the rotational speed of the DC motor may be changed steplessly depending on the amount of opening of the door 14, for example. Thereby, regardless of the degree of opening of the door 14, the wind speed at the opened portion can be kept approximately constant. Alternatively, control may be performed using an AC motor.

[Embodiment 6]
In the sixth embodiment, a shutter 25 is provided on the upstream side of the blower 20 in the blowing direction.

<Exhaust device for cooking utensils>
FIG. 20 is a sectional view of the exhaust device for cooking utensils according to the sixth embodiment.

The exhaust device 106 for cooking utensils of the sixth embodiment is provided with an intake side shutter 80 that opens and closes at the intake port (opening part of the grease filter) on the upstream side (that is, the intake side) of the blower 20 in the air blowing direction. The intake side shutter 80 closes off the exhaust side of the cooking chamber 12 .

Other configurations may be any of Embodiments 1 to 5. Furthermore, the control of the blower 20 in conjunction with the opening and closing of the door 14 is also performed using any of the control examples described in the first to fifth embodiments. Therefore, descriptions of the device configuration, installation example, and control other than the intake-side shutter will be omitted.

The intake side shutter 80 is electrically operated and opens and closes in conjunction with the operation of the blower 20. The opening and closing of the intake-side shutter may be controlled by the control unit 50, or wiring may be connected from the wiring that supplies power to the blower 20 to a drive source (not shown) for the intake-side shutter 80, and power is supplied to the blower 20. The intake side shutter 80 may be opened when electricity flows through the wiring that supplies power to the blower 20, and the intake shutter 80 may be closed when electricity no longer flows through the wiring that supplies power to the blower 20.

Further, the intake side shutter 80 is linked with the fire alarm 41 so that it closes when the fire alarm 41 is activated. If the intake shutter 80 is open when the fire alarm 41 is activated, the control unit 50 receives the alarm and instructs the intake shutter 80 to close. This can prevent or suppress flames and smoke from exiting through the exhaust duct in the event of a fire. In this case, it is preferable to have a backup battery or the like so that the closing operation can be performed in case the entire device loses power due to a fire.

In the cooking utensil exhaust device 106 of the sixth embodiment, by providing the intake side shutter 80, it is possible to prevent oil smoke and the like from entering the blower housing while the blower 20 is stopped. Therefore, it is possible to suppress the adhesion and accumulation of dirt on the blower 20, which may cause odor.

[Embodiment 7]
Embodiment 7 is a mode in which an inner panel having an opening communicating with the suction port of the blower 20 is provided in the cooking chamber 12.

<Exhaust device for cooking utensils>
FIG. 21 is a sectional view of an exhaust device for cooking utensils according to Embodiment 7.

In the cooking utensil exhaust device 107 of the seventh embodiment, an inner surface panel 90 having an opening communicating with the suction port of the blower 20 (the part to which the grease filter 30 is attached) is provided in the cooking chamber 12. Other configurations may be any of Embodiments 1 to 6. Furthermore, the control of the blower 20 in conjunction with the opening and closing of the door 14 is also performed using any of the control examples described in the first to fifth embodiments. Therefore, descriptions of the device configuration, installation example, and control other than the inner panel 90 will be omitted.

The inner surface panel 90 is provided so as to cover the ceiling portion in the cooking chamber 12 and the lower part of the housing 35 of the blower 20. In particular, it is preferable to cover cornered portions that are the joint portions between the ceiling and the lower part of the housing 35, and the side panels 13b and back panels 13c. The inner panel 90 has a gently curved shape with no corners.

The provision of the inner surface panel 90 prevents or suppresses oil smoke generated in the cooking chamber 12 from adhering to the ceiling portion or the lower part of the housing 35 due to direct upward airflow. Since the inner panel 90 has a gently curved shape, it is easy to clean. The adhesion of dirt inside the cooking chamber 12 can cause a bad odor, so if cleaning becomes easier, the cause of the odor can be removed, making it easier to prevent the odor from floating around.

Furthermore, in order to prevent the inside of the cooking chamber 12 from getting dirty, it is preferable to apply an oil-repellent coating to the inner walls of the cooking chamber 12, such as the inner surface panel 90, the side panels 13b, and the back panel 13c. By applying oil-repellent coating to the inner wall of the cooking chamber 12, the adhesion of oil stains is reduced. Even in other embodiments in which the inner surface panel 90 is not provided, it is preferable to apply oil-repellent coating to the inner walls of the cooking chamber 12, such as the side panels 13b, the rear panel 13c, and the surfaces of the ceiling plate 13d facing the cooking chamber.

[Embodiment 8]
Embodiment 7 is a mode in which an inner surface panel 90 having an opening communicating with the suction port of the blower 20 is provided in the cooking chamber 12.

<Exhaust device for cooking utensils>
FIG. 22 is a sectional view of an exhaust device for cooking utensils according to Embodiment 8.

In the cooking utensil exhaust system 108 of the eighth embodiment, an oil removal device 801 is provided in the cooking chamber 12. Other configurations may be any of Embodiments 1 to 7. Furthermore, the control of the blower 20 in conjunction with the opening and closing of the door 14 is also performed using any of the control examples described in the first to fifth embodiments. Therefore, descriptions of device configurations, installation examples, and controls other than the oil removal device 801 will be omitted.

The oil removal device 801 is provided under the ceiling plate 13d in the cooking chamber 12. An oil removal duct 802 communicating from the downstream side of the blower 20 and a vent 803 for switching the air blowing route are provided in the attic space.

The oil removal device 801 houses a disk-shaped filter having a rotating ventilation hole and a motor for driving the filter (both not shown), and its lower part is open to allow air to pass through. In the oil removal device 801, air containing oil passes through a rotating disk, so that oil adheres to the disk. The adhered oil hits the inner wall of the oil removal device 801 due to centrifugal force and accumulates in an oil sump (not shown) provided along the inner wall. The oil sump is removable, and the accumulated oil can be removed and disposed of.

The oil removal duct 802 is a path that guides exhaust air from the blower 20 to the oil removal device 801. The vent 803 is an exhaust route switching device, which guides the exhaust air from the blower 20 toward the exhaust port 23 (in the direction to which the exhaust duct 501 is connected) when the door 14 is opened, and toward the oil removal device 801 when the door 14 is closed. The vent 803 may be operated in accordance with the opening and closing of the door 14 in the control examples described in each embodiment.

In the case of the eighth embodiment, as an example of the control, it is preferable to control the blower 20 to operate even when the door 14 is closed. By doing so, oil that may cause odor can be removed from the air within the cooking chamber 12.

Note that when installing the oil removing device 801, instead of using the exhaust air from the blower 20, a dedicated blower 20 is attached to the oil removing device 801, and the air inside the cooking chamber 12 is constantly passed through the oil removing device 801 into the cooking chamber 12. It may be possible to circulate it. In this case, a dedicated duct may be provided, or an oil removal device 801 with a dedicated blower may be provided in the cooking chamber 12 without providing the oil removal duct 802.

[Cooking method]
Next, a cooking method using the exhaust device for cooking utensils according to each of the embodiments described above will be explained.

First, the user opens the door 14 (in some embodiments, presses the open button). Thereby, the blower 20 operates as in each embodiment. After opening the door 14, food is set in the cooking utensil 200 in the cooking chamber 12. The user also performs operations such as setting a cooking time and starting cooking on the cooking utensil 200.

Thereafter, the user closes the door 14 (in some embodiments, presses a close button). As a result, the blower 20 stops or becomes the first air volume as in each embodiment.

When the set cooking time has elapsed, the cooking utensil 200 sounds a chime, buzzer, or the like or displays an indication using a lamp or display device to notify the end of cooking.

The user who recognizes these sounds and displays opens the door 14. Thereby, the blower 20 operates as in each embodiment. The user who opens the door 14 takes out the cooked food and, if necessary, sets the next food.

According to such a cooking method, the blower 20 operates according to the control example described above in response to opening and closing of the door 14, so that the smell from the cooking chamber 12 during or after cooking is prevented from drifting into the room. Can be prevented or suppressed.

(Form of cooperation with cooking utensils)
In relation to the cooking method, the blower 20 can also be controlled in conjunction with the cooking utensil 200.

As in the above cooking method, when cooking, a cooking time is set in the cooking utensil 200. For example, in an automatic fryer, this is the frying time. By communicating between the cooking utensil 200 and the control unit 50, when the cooking time has elapsed, even if the door 14 is closed, if the blower 20 is stopped, the blower 20 is started and exhaust is started. The communication between the cooking appliance 200 and the control unit 50 may be simply a switch that starts the blower 20. When the control computer 702 controls the blower 20, the cooking appliance 200 sends a signal indicating the end of time measurement to the control computer 702, and the control computer 702 starts the blower 20.

In addition, as another example of control in cooperation with the cooking appliance 200, the control unit 50 receives the cooking time set in the cooking appliance 200, measures the time on the control unit 50 side, and when the set time has elapsed. Even if the door 14 is closed, if the blower 20 is stopped, the blower 20 may be started to start exhausting air. Furthermore, in this case, the blower 20 may be started earlier than the end time set for the cooking appliance 200.

By starting the blower 20 in cooperation with the cooking utensil 200 in this way, the blower 20 starts exhausting air at the same time as the cooking is finished, so even if the door 14 is opened immediately after the cooking is finished, the door Since the air in the cooking chamber 12 can be exhausted to some extent until it is opened, odor leakage can be further reduced. Furthermore, if the blower 20 is started earlier than the cooking end time, the air in the cooking chamber 12 can be exhausted by the time cooking is finished, so the odor in the cooking chamber 12 is gone by the time cooking is finished. Therefore, the odor inside the cooking chamber 12 will not leak out when the door 14 is opened.

Although the embodiments to which the present invention is applied have been described above, the present invention is not limited to the embodiments described above.

For example, when opening the door 14, a temporary stop section may be provided to temporarily stop the door 14 until the door 14 is fully opened, and a predetermined temporary stop period may be set while the door 14 is temporarily stopped. Control such as canceling the temporary stop by the temporary stop unit after the elapse of time is also possible. Thereby, air can be easily taken into the cooking chamber 12 by slightly opening the door 14. In this case, the temporary stop may be canceled based on the state sensor 61 determining that the odor has disappeared (or decreased) instead of for a certain period of time. Here, the degree of opening of the door 14 during the temporary stop is preferably 1 to 50%, for example, assuming that the door is fully opened at 100%. If the opening degree during a temporary stop is less than 1%, the amount of air sucked in is too small and does not lead to load reduction. On the other hand, if it opens more than 50%, it is almost the same as fully open, so there is no point.

Further, the door 14 is not limited to the shape of a single plate, but may have a plurality of plate shapes, or may be a roll-up shutter. In addition, it may be a horizontal slide instead of a vertical slide, and it can be made into various shapes and forms, such as not only a single opening but also a double opening.

In addition, although the exhaust system for cooking utensils according to the present invention is often installed in an indoor room, it can also be installed outdoors (for example, at an outdoor exhibition hall) to prevent it from wafting into the surrounding area and to save energy. It can be used as an exhaust device for cooking utensils.

In addition, the control examples described in each embodiment may not be used alone, but may be combined with each other, or other controls may be performed.

Furthermore, the present invention can be implemented in various forms based on the technical idea described in the claims, and these are also within the scope of the present invention.

11 trestle,
12 galley;
13a front panel,
13b side panel,
13c back panel,
13d Ceiling board,
14 Door,
15 handle,
16 Packing,
17, 17a open button,
17b close button,
18, 18a, 18b, 18c, 19a, 19b indicator lamp,
20 blower,
21 motor,
22 Sirocco fan,
23 Exhaust port,
25 shutter,
30 Grease filter,
31 Air filter,
32 Deodorizing filter,
33 Smoke removal filter,
34 Oil adsorption filter,
35 casing,
41 Fire alarm,
42 Fire extinguisher,
50 control unit,
51 Open/close sensor,
52 Fully open sensor,
55 Lock part,
57 Timer,
58 Electromagnetic solenoid,
61 status sensor,
62 control IC,
70 Opening/closing power section,
72 rack gear,
73 pinion gear,
74 Opening/closing motor,
80 Intake side shutter,
90 inner panel,
101, 102, 102, 103, 104, 106, 107, 108 Exhaust device for cooking utensils,
200 cooking utensils,
501, 503 Exhaust duct,
701 converter,
702 Control computer,
711 CPU,
712 ROM,
713 RAM,
714 non-volatile memory,
801 Oil removal device,
802 Oil removal duct,
803 vent.

Claims (25)

A cooking room that stores cooking utensils inside,
a door provided in the cooking chamber;
a blower connected to an exhaust duct for exhausting the air inside the cooking chamber into or outside the room in which the cooking chamber is placed , and exhausting the air inside the cooking chamber ;
a control unit that changes the operation of the blower in accordance with the open/closed state of the door;
an open/close sensor and a full open sensor that detect the open/close state of the door and the fully open state of the door;
an opening sensor that detects the opening degree of the door;
The control unit includes:
controlling the blower to stop when the door is closed;
From the time the door starts to open until the door is fully opened, control is performed so that the air volume of the blower increases as the degree of opening of the door increases;
After the door is fully opened, the blower is controlled to have a predetermined air volume;
The control unit determines that the door starts to open when the signal from the opening/closing sensor changes from closed to open, receives a signal indicating the opening degree of the door from the opening sensor, and controls the fully open sensor. An exhaust device for cooking utensils that controls the blower by receiving a signal indicating that the door is fully opened. A cooking room that stores cooking utensils inside,
a door provided in the cooking chamber;
a blower connected to an exhaust duct for exhausting air inside the cooking chamber into or outside the room in which the cooking chamber is placed;
a control unit that changes the operation of the blower in accordance with the open/closed state of the door;
an open/close sensor and a full open sensor that detect the open/close state of the door and the fully open state of the door;
an opening sensor that detects the opening degree of the door;
The control unit includes:
When the door is closed, the blower is stopped or controlled to have a first air volume;
From the time the door starts to open until the door is fully opened, control is performed so that the air volume of the blower increases as the degree of opening of the door increases;
The air volume when the door is fully opened is set as a third air volume, and after the door is fully opened, the blower is controlled to have a second air volume that is greater than the first air volume and smaller than the third air volume. ,
The control unit determines that the door starts to open when the signal from the opening/closing sensor changes from closed to open, receives a signal indicating the opening degree of the door from the opening sensor, and controls the fully open sensor. An exhaust device for cooking utensils that controls the blower by receiving a signal indicating that the door is fully opened. A cooking room that stores cooking utensils inside,
a door provided in the cooking chamber;
a blower connected to an exhaust duct for exhausting air inside the cooking chamber into or outside the room in which the cooking chamber is placed;
a control unit that changes the operation of the blower in accordance with the open/closed state of the door;
The control unit includes:
When the door is closed, the blower is stopped or controlled to have a first air volume;
From the time the door starts to open until the door is fully opened, control is performed so that the air volume of the blower increases as the degree of opening of the door increases;
The air volume when the door is fully open is set as a third air volume, and after the door is fully opened, the blower is controlled to have a second air volume that is greater than the first air volume and smaller than the third air volume. , exhaust system for cooking utensils. an open button for instructing to open the door;
a lock part that locks and unlocks the door when the door is closed;
The exhaust device for cooking utensils according to claim 2 or 3, wherein the control section operates the blower for a certain period of time when receiving an instruction to open the door from the open button, and then unlocks the lock section. an open button for instructing to open the door;
an opening/closing power unit that opens and closes the door;
The control unit controls the opening/closing power unit to open the door after operating the blower for a certain period of time when receiving an instruction to open the door from the open button. Exhaust device for cooking utensils. an open button for instructing to open the door;
a lock part that locks and unlocks the door when the door is closed;
a cooking chamber condition detection sensor that detects the condition inside the cooking chamber;
The control unit determines that at least one of the detected values of odor, temperature, oil in the air, smoke, and pressure in the cooking chamber detected by the cooking chamber condition detection sensor is below a predetermined reference value. The exhaust device for cooking utensils according to claim 2 or 3, wherein the lock portion is unlocked when the cooking device is opened. an open button that instructs to open the door;
an opening/closing power unit that opens and closes the door;
a cooking chamber condition detection sensor that detects the condition inside the cooking chamber;
The control unit determines that at least one of the detected values of odor, temperature, oil in the air, smoke, and pressure in the cooking chamber detected by the cooking chamber condition detection sensor is below a predetermined reference value. The exhaust device for cooking utensils according to claim 2 or 3, wherein the opening/closing power unit is controlled to open the door when the door is opened. It has a temporary stop part that temporarily stops the door between when the door starts opening and when it is fully opened,
The exhaust gas for cooking utensils according to claim 2 or 3, wherein the control unit releases the temporary stop by the temporary stop unit after a predetermined temporary stop time has elapsed after the door is stopped by the temporary stop unit. Device. It has a temporary stop part that temporarily stops the door between when the door starts opening and when it is fully opened,
a cooking chamber condition detection sensor that detects the condition inside the cooking chamber;
The control unit determines that at least one of the detected values of odor, temperature, oil in the air, smoke, and pressure in the cooking chamber detected by the cooking chamber condition detection sensor is below a predetermined reference value. The exhaust device for cooking utensils according to claim 2 or 3, wherein the exhaust device for cooking utensils cancels the temporary stop by the temporary stop portion when the temporary stop occurs. The cooking utensils stored in the cooking chamber can communicate with the control unit,
The exhaust device for cooking utensils according to claim 2 or 3, wherein the control section receives a cooking end signal from the cooking utensil and operates the air blower if the air blower is stopped. The cooking utensils stored in the cooking chamber can communicate with the control unit,
The control unit operates the blower if the blower is stopped upon receiving a signal from the cooking utensil indicating that a predetermined time has passed since the start of cooking. exhaust system for cooking utensils. The exhaust device for cooking utensils according to claim 2 or 3, wherein the control section operates the blower if the blower is stopped after a predetermined time has elapsed from the start of cooking. The exhaust device for cooking utensils according to any one of claims 2 to 12, further comprising a deodorizing filter for deodorizing air on the upstream side or downstream side of the blower. The cooking utensil according to any one of claims 2 to 13, wherein the control unit controls the blower so that the wind speed flowing into the cooking chamber is 0.2 m/s or more when the door is fully open. Exhaust device. The exhaust device for cooking utensils according to any one of claims 2 to 14, further comprising a shutter that closes the exhaust side of the cooking chamber while the blower is stopped. The exhaust system for cooking utensils according to any one of claims 2 to 15, further comprising a fire alarm that monitors the interior of the cooking chamber and issues an alarm in the event of a fire. It has a fire alarm that monitors the inside of the cooking chamber and issues an alarm in the event of a fire;
The exhaust device for cooking utensils according to claim 5 or 7, wherein the control unit closes the door if the door is open when the fire alarm is activated. a fire alarm that monitors the inside of the cooking chamber and issues an alarm in the event of a fire;
a shutter that closes an exhaust side in the cooking chamber;
The exhaust device for cooking utensils according to any one of claims 2 to 14, wherein the control unit closes the shutter when the fire alarm is activated. The exhaust device for cooking utensils according to any one of claims 16 to 18, further comprising a fire extinguisher that discharges a fire extinguishing agent toward at least the cooking chamber when the fire alarm is activated. The exhaust device for a cooking utensil according to any one of claims 2 to 19, wherein the cooking utensil is a fryer. The exhaust device for a cooking utensil according to any one of claims 2 to 20, wherein an oil-repellent coating is applied to an inner wall of the cooking chamber. The exhaust device for cooking utensils according to any one of claims 2 to 21, wherein the inside of the cooking chamber has an inner panel having an opening that communicates with the suction port of the blower. The exhaust device for cooking utensils according to any one of claims 2 to 22, further comprising an oil removal device that removes oil from the air in the cooking chamber. The exhaust gas for cooking utensils according to claim 23, further comprising an exhaust route switching device that guides exhaust gas from the blower toward the exhaust duct when the door opens and toward the oil removal device when the door closes. Device. A cooking method using the exhaust device for cooking utensils according to any one of claims 2 to 24,
a step of opening the door and setting the ingredients in the cooking utensils in the cooking chamber;
closing the door;
opening the door after cooking is completed;
A cooking method with.