JP6917560B2 - Cooker - Google Patents

Description

The present disclosure relates to a cooker that heats food in a heating chamber.

Conventionally, the air heated in the heating chamber of the cooking cooker is discharged to the outside through a hole formed in the wall surface of the heating chamber, through a rear cover attached to the rear part of the cooking cooker, and to the outside. A heating cooker having such a structure is described in, for example, Patent Document 1.

In Patent Document 1, heated air flows out of the heating chamber from a first exhaust port on the upper surface of the heating chamber. After that, the air passes through the exhaust passage and enters the exhaust duct through the second exhaust port of the exhaust passage. The air that has entered the exhaust duct is discharged to the outside of the main body from the external exhaust port of the exhaust duct.

JP-A-2017-83100

However, when the cooking cooker is equipped with a steam generator or when a large amount of steam is emitted from the food to be heated, the air exhausted from the heating chamber contains a large amount of steam. When the air containing steam is exhausted from the heating chamber, the steam in contact with the rear cover condenses and flows down the front surface of the rear cover. As a result, the water flowing down the rear cover was collected, which caused rust on the metal part of the cooking cooker.

Therefore, an object of the present disclosure is to provide a cooking device capable of efficiently recovering the water flowing down from the rear cover in order to solve the above-mentioned problems.

In order to achieve the above object, the cooker according to one aspect of the present invention is
With a heating room
An exhaust passage located behind the rear wall, through which steam flows through a hole drilled in the rear wall of the heating chamber, and
A rear cover having a vent for steam to flow from the exhaust passage to the outside and arranged behind the exhaust passage,
A lower frame arranged below the heating chamber and
With
The rear cover has a flange portion that is bent forward at the bottom.
The lower frame has a recess formed in the rear portion.
The recess is located below the lower end of at least a part of the flange.
A part of the water condensed on the inner surface of the rear cover is configured to be collected in the recess via the upper surface of the flange portion .

It is possible to provide a cooking cooker capable of efficiently recovering the water flowing down from the rear cover.

Front perspective view of the cooker according to the embodiment Front perspective view of the cooker with the door open Side view of the cooker with the door open Front view of the cooker with the door open Rear perspective view of the cooker Rear perspective view of the cooker with the housing other than the front frame removed Front view of the rear wall of the heating chamber with the fan case attached Front perspective view of fan case Rear disassembled perspective view of the cooking cooker with the rear cover removed in FIG. Rear view of the cooker with the rear cover removed Front view of the rear cover Enlarged front view of the lower part on one side in the longitudinal direction of the rear cover Partial perspective view showing a recess on one side in the longitudinal direction of the lower frame A view of the inside from a cross section on one side in the longitudinal direction of the lower frame. Enlarged front view around the lower part on the other side in the longitudinal direction of the rear cover Partial perspective view showing the recess on the other side in the longitudinal direction of the lower frame A view of the inside from the cross section on the other side in the longitudinal direction of the lower frame.

According to one aspect of the present disclosure, a heating chamber, an exhaust passage arranged behind the rear wall through which steam flows through a hole formed in the rear wall of the heating chamber, and steam from the exhaust passage to the outside. The rear cover has a flowing vent and is provided with a rear cover arranged to cover the rear of the exhaust passage and a lower frame arranged below the heating chamber, and the rear cover is bent forward at the bottom. The lower frame is a heating cooker having a flange portion, the lower frame having a recess formed in the rear portion, and the recess being located below the lower end of at least a part of the flange portion.

Further, the flange portion may have a guide portion for guiding water to the recess.

Further, the flange portion may be formed directly below the region of the rear cover facing the exhaust passage in the front view of the rear cover.

Further, the recess has a bottom wall and a side wall forming a concave shape, the side wall of the recess includes a part of the outer wall of the lower frame, and the side wall of the recess is the side wall of the recess. It extends below the bottom wall.

(Embodiment)
Hereinafter, the cooking cooker according to the embodiment of the present disclosure will be described with reference to FIGS. 1 to 4. FIG. 1 is a front perspective view of the cooking device 1 according to the embodiment. FIG. 2 is a front perspective view of the cooking cooker 1 with the door 7 open. FIG. 3 is a side view of the cooking cooker 1 with the door 7 open. FIG. 4 is a front view of the cooking cooker 1 with the door 7 open. In the following description, the X direction is the longitudinal direction (width direction) of the cooking cooker 1, the Y direction is the front-rear direction, and the Z direction is the height direction. Further, in the following description, the height means the distance from the ground plane of the cooking cooker 1.

The heating cooker 1 according to the embodiment of the present disclosure can open and close the housing 3, the heating chamber 5 arranged in the housing 3, and the opening 3b opened in the front frame 3a which is the front surface of the housing 3. A door 7 for covering is provided. The heating chamber 5 is formed by being surrounded by an upper wall 5a arranged at the upper part, side walls 5b and 5c arranged on both sides, a rear wall 5d arranged at the rear part, and a bottom wall 5e arranged at the lower part. It is a space to be. The heating chamber 5 is provided with a microwave emission port for radiating microwaves. It is configured to dielectrically heat the object to be heated (food) placed in the heating chamber 5 by the microwave emitted from the microwave emission port. Further, a steam outlet is provided in the upper part of the heating chamber 5, and steam can be supplied into the heating chamber 5.

The door 7 is attached to the housing 3 so as to be openable and closable below the opening 3b at the center of rotation in the horizontal direction. When the user pulls the handle 7a attached to the upper part of the door 7, the door 7 is rotated so as to be in a horizontal state, so that the heating chamber 5 is opened. Further, the heating chamber 5 is closed by rotating the door 7 so that the door 7 is in the vertical state.

The door 7 has a display unit 9 and an operation unit 11 arranged on one side in a front view. The display unit 9 is, for example, a liquid crystal screen, and a menu screen or the like is displayed. The operation unit 11 is, for example, a push button or a dial. The user issues various cooking instructions to the cooking cooker 1 using the operation unit 11.

Below the housing 3, a first tray 13 and a second tray 15 which are connected to the lower end of the housing 3 and which can be attached to and detached from the lower frame 49 in the front-rear direction are arranged. The first tray 13 and the second tray 15 are arranged side by side in the longitudinal direction. For example, the first tray 13 is arranged on one side (left side) in the longitudinal direction, and the second tray 15 is arranged on the other side (right side) in the longitudinal direction. The first tray 13 is, for example, a tray for collecting condensed water droplets in the cooking device 1. The second tray 15 accommodates a water supply tank (not shown) for supplying water to the steam generator 16.

Next, refer to FIG. FIG. 5 is a rear perspective view of the cooking device. A rear cover 6 is arranged on the rear side of the heating cooker 1. An exhaust duct 29 is attached to the upper part of the rear cover 6.

Next, refer to FIG. FIG. 6 is a rear perspective view of the cooking cooker 1 from which the housing 3 other than the front frame 3a is removed. Metal plates for heat insulation are attached to the outside of the upper wall 5a, the side walls 5b, and 5c of the heating chamber, respectively. FIG. 6 shows a metal plate 12a attached to the outside of the upper wall 5a and a metal plate 12c attached to the outside of the side wall 5c. The rear cover 6 has ventilation holes 6a and 6b for communicating the inside of the rear cover 6 with the exhaust duct 29, and ventilation holes 6c for communicating the metal plate 12a of the heating chamber 5 and the exhaust duct 29.

Further, the lower end of the front frame 3a is connected to the bottom plate 37. The space between the bottom wall 5e of the heating chamber 5 and the bottom plate 37 is used as the machine room 30. In the machine room 30, a drive mechanism for driving each function of the cooker 1, a magnetron for generating microwaves (not shown), a magnetron drive power supply for supplying electric power to the magnetron (not shown), and a micro A control unit (not shown) that controls wave generation operation is arranged. Further, in the machine room 30, a cooling fan (not shown) for cooling them is arranged.

Cooling air from the cooling fan flows from the bottom to the top along the metal plates attached to the metal plate 12c and the side wall 5c. This cooling air flows backward along the metal plate 12a, passes through the ventilation hole 6c, and flows into the exhaust duct 29. In addition to this flow, the cooling air from the machine room 30 also flows inside the rear cover 6.

Next, reference is made to FIGS. 7 and 8. FIG. 7 is a front view of the rear wall 5d of the heating chamber 5 to which the fan case 21 is attached. FIG. 8 is a front perspective view of the fan case 21. A fan 17 is arranged behind the rear wall 5d. Further, the rear wall 5d has a plurality of intake holes 19 and exhaust holes 20 opened by the fan 17 to circulate the air in the heating chamber 5. Further, on the other side of the rear wall 5d in the longitudinal direction, a ventilation hole 33 for passing the air in the heating chamber 5 to the exhaust passage 31 arranged behind the heating chamber 5 is provided.

The fan case 21 has a recess 21a that rotatably supports the fan 17 and a flat portion 21b that rises from the recess 21a and is formed around the recess 21a. The fan case 21 covers the rear of the circulation fan 17. The fan case 21 is attached to the rear wall 5d of the heating chamber 5.

The sheathed heater 23 is arranged in the recess 21a along the rotation direction of the fan 17. By rotationally driving the fan 17, the air in the heating chamber 5 is sucked from the intake hole 19. The sucked air is heated by the sheathed heater 23 and returns to the heating chamber 5 through the exhaust hole 20. The fan 17 and the sheathed heater 23 form a convection heater.

The legs 24 are attached to the lower ends of both sides of the fan case 21. The height of the lower end of each leg 24 is the same as the height of the lower end of the front frame 3a. A water receiving portion 27 for guiding the water that condenses and falls is attached to the lower part of the fan case 21. The water receiving portion 27 extends in the longitudinal direction of the fan case 21.

As shown in FIG. 8, on the other side of the fan case 21, an exhaust stack 35 having a concave shape rearward and extending in the vertical direction is formed. The exhaust stack 35 is located behind the vent 33. When the fan case 21 is attached to the rear wall 5d of the heating chamber 5, a part of the rear surface of the rear wall 5d is configured as the front surface of the exhaust stack 35. The exhaust passage 31 is formed by the exhaust pipe 35.

Next, reference to FIGS. 9 to 11. FIG. 9 is a rear exploded perspective view of the cooking cooker from which the rear cover of FIG. 6 has been removed. FIG. 9 shows the rear surface of the fan case 21. FIG. 10 is a rear view of the cooking cooker with the rear cover removed. FIG. 11 is a front view of the rear cover 6. In FIG. 11, the arrow shown on the rear cover 6 indicates the flow of steam. The rear cover 6 has a recess 6d that faces the fan 17 with the fan case 21 interposed therebetween, and a flat portion 6k that rises from the recess 6d and surrounds the recess 6d. Vent holes 6a and 6b are formed in the upper wall 6e which is the upper side surface of the recess 6d. A ventilation hole 6c is formed in the upper part of the flat portion 6k.

Most of the steam rising from the upper opening 35a opened at the upper end of the exhaust pipe 35 flows to the exhaust duct 29 through the ventilation hole 6a of the rear cover 6. However, some steam is cooled by contact with the rear cover 6 to become water droplets. Since the rear cover 6 is in contact with the outside air, the temperature is lower than that in the heating chamber 5, and the steam is cooled and dew condensation is likely to occur. Therefore, water droplets are likely to be generated in the region 6h of the rear cover 6 facing the exhaust pipe 35 forming the exhaust passage 31. Further, a part of the steam flowing from the upper opening 35a of the exhaust pipe 35 flows from the other side to one side along the upper wall 6e of the recess 6d of the rear cover 6, and flows from the ventilation hole 6b to the exhaust duct 29. Again, some vapor flows below the vents 6b and comes into contact with the rear cover 6 to cause condensation.

As described above, dew condensation is likely to occur on both sides of the recess 6d of the rear cover 6. In particular, in the rear cover 6, the region 6h facing the exhaust passage 31 (exhaust cylinder 35) and the region around the inside thereof are prone to dew condensation. Therefore, as shown in FIG. 11, the first flange portion 6f and the second flange portion 6g extend from the lower portions of both side portions of the recess 6d, respectively. The first flange portion 6f extends from the lower portion on one side of the rear cover 6. The second flange portion 6g extends from the lower portion on the other side of the rear cover 6. In particular, the second flange portion 6g extends from the lower portion directly below the region 6h of the rear cover 6 and the region inside the rear cover 6 in the front view of the rear cover 6.

Next, refer to FIG. FIG. 12 is an enlarged front view of the periphery of the lower portion on one side in the longitudinal direction of the rear cover 6. The first flange portion 6f is bent forward from the lower portion of the rear cover 6 along the lower edge portion. Further, the first flange portion 6f has a guide portion 6fa that guides the water that has flowed down to one side inward. The guide portion 6fa is formed, for example, by folding back and overlapping a sharp tip portion extending to one side of the first flange portion 6f along the leading edge portion.

The water droplets that have condensed on the front surface of one side of the recess 6d flow downward along the recess 6d due to its own weight. Since the rising portion of the lower portion of the recess 6d is gently inclined downward, the water droplets smoothly flow from the recess 6d to the flat portion 6k and reach the first flange portion 6f.

Next, reference is made to FIGS. 13 and 14. FIG. 13 is a partial perspective view showing a recess on one side in the longitudinal direction of the lower frame 49. FIG. 14 is a view of the lower frame 49 viewed inward from a cross section on one side in the longitudinal direction.

The lower frame 49 has a first recess 49a for storing water directly under the first flange portion 6f of the rear cover 6. The first recess 49a is formed by an outer wall 49b of the lower frame, a side wall 49c rising from the lower part of the lower frame 49, and a bottom wall 49d connecting the outer wall 49b and the side wall 49c in the horizontal direction. The outer side wall 49b, the side wall 49c, and the bottom wall 49d are integrally formed as a part of the lower frame 49.

Since the first recess 49a of the lower frame 49 is arranged directly below the first flange portion 6f, the water that has fallen from the first flange portion 6f can be received by the first recess 49a. The water accumulated in the first recess 49a is removed by evaporating by natural drying.

The first recess 49a is not arranged directly below the outer tip of the guide portion 6fa of the first flange portion 6f. However, since the water flowing through the guide portion 6fa is guided inward and reaches directly above the first recess 49a, it can be accommodated in the first recess 49a. Therefore, since the first flange portion 6f has the guide portion 6fa, the degree of freedom in arranging the first recess 49a can be improved.

The lower end of the first flange portion 6f may be inserted into the first recess 49a. The height of the lower end of the first flange portion 6f may be lower than the upper end of the first recess 49a. With this configuration, the water falling from the first flange portion 6f can be reliably stored in the first recess 49a.

The bottom wall 49d of the first recess 49a is located higher than a part of the outer wall 49b and the lower end of the side wall 49c, which are the side walls of the first recess 49a. As a result, the bottom wall 49d of the second recess 49e becomes a side wall of the first recess 49a, and is located higher than a part of the outer wall 49b and the lower end of the side wall 49g, so that the bottom wall 49d of the second recess 49e becomes. It functions as a rib and can maintain the strength of the lower frame 49 in which the second recess 49e is formed.

Next, refer to FIG. FIG. 15 is an enlarged front view of the periphery of the lower portion on the other side in the longitudinal direction of the rear cover 6. The second flange portion 6g is bent forward from the lower portion of the rear cover 6 along the lower edge portion. Further, the second flange portion 6g has a guide portion 6ga that guides the water that has flowed down to the other end side inward. The guide portion 6ga is formed, for example, by folding back and stacking a sharp tip portion extending to the other side of the first flange portion 6f inward along the leading edge portion.

The water droplets that have condensed on the front surface of the other side of the recess 6d flow downward along the recess 6d due to its own weight. Since the rising portion of the lower portion of the recess 6d is gently inclined downward, the water droplets smoothly flow from the recess 6d to the flat portion 6k and reach the second flange portion 6g.

Next, reference is made to FIGS. 16 and 17. FIG. 16 is a partial perspective view showing a recess on the other side in the longitudinal direction of the lower frame 49. FIG. 17 is a view of the lower frame 49 viewed inward from the cross section on the other side in the longitudinal direction.

The lower frame 49 has a second recess 49e for storing water directly under the second flange portion 6g of the rear cover 6. The second recess 49e is formed by an outer wall 49b of the lower frame 49, a side wall 49g rising from the lower part of the lower frame 49, and a bottom wall 49h connecting the outer wall 49b and the side wall 49g in the horizontal direction. The outer side wall 49b, the side wall 49c, and the bottom wall 49h are integrally formed as a part of the lower frame 49.

Since the second recess 49e of the lower frame 49 is arranged directly below the second flange portion 6g, the water that has fallen from the second flange portion 6g can be received by the second recess 49e. The water accumulated in the second recess 49e is removed by evaporating by natural drying.

The second recess 49e is not arranged directly below the outer tip of the guide portion 6ga of the second flange portion 6g. However, since the water flowing through the guide portion 6ga is guided inward and reaches directly above the second recess 49e, it can be accommodated in the second recess 49e. Therefore, since the second flange portion 6g has the guide portion 6ga, the degree of freedom in arranging the second recess 49e can be improved.

The lower end of the second flange portion 6g may be inserted into the second recess 49e. The height of the lower end of the second flange portion 6g may be lower than the height of the upper end of the second recess 49e. With this configuration, the water falling from the second flange portion 6g can be reliably stored in the second recess 49e.

The bottom wall 49d of the second recess 49e is located higher than a part of the outer wall 49b and the lower end of the side wall 49g, which are the side walls of the second recess 49e. As a result, the bottom wall 49d of the second recess 49e becomes a side wall of the second recess 49e, and is located higher than a part of the outer wall 49b and the lower end of the side wall 49g, so that the bottom wall 49d of the second recess 49e becomes. It functions as a rib and can maintain the strength of the lower frame 49 in which the second recess 49e is formed.

The heating cooker 1 includes a heating chamber 5 and an exhaust passage 31 arranged behind the rear wall 5d through which steam flows through a ventilation hole 33 opened in the rear wall 5d of the heating chamber 5. Further, the heating cooker 1 has a ventilation hole 6a through which steam flows from the exhaust passage 31 to the outside, a rear cover 6 arranged so as to cover the rear of the exhaust passage 31, and a lower frame arranged below the heating chamber. 49 and. The rear cover 6 has a second flange portion 6 g that is bent forward at the lower portion. The lower frame 49 has a second recess 49e formed at the rear portion. The second recess 49e is located below the lower end of at least a part of the second flange portion 6g. The following effects can be obtained from such a configuration.

The steam in the heating chamber 5 escapes from the exhaust passage 31 to the ventilation hole 6a of the rear cover 6, but some of the steam comes into contact with the rear cover 6 and then is cooled to become water droplets. The water droplets fall down along the rear cover 6. The second flange portion 6g formed in the lower part of the rear cover 6 is bent forward. Further, since there is a second recess 49e on the downward extension of the lower end portion of the second flange portion 6g, water droplets falling along the rear cover 6 fall from the lower end of the second flange portion 6g to the second recess 49e. do. As a result, the water droplets condensed on the rear cover 6 can be collected in the second recess 49e formed in the lower frame 49.

Further, the second flange portion 6g has a guide portion 6ga that guides water to the second recess 49e. Since the second flange portion 6g has a guide portion 6ga that guides water to the second recess 49e, water flowing in a portion where the second recess 49e is not located below the lower end of the second flange portion 6g also reaches the second recess 49e. I can guide you. Therefore, a wide range of water droplets on the rear cover 6 can be guided to the second recess 49e.

Further, the second flange portion 6g is formed directly below the region 6h of the rear cover 6 facing the exhaust passage 31 in the front view of the rear cover 6. The region 6h of the rear cover 6 facing the exhaust passage 31 through which steam flows is a region where the steam coming out of the exhaust passage 31 is cooled and water droplets are likely to be formed. Since the second flange portion 6g is arranged directly below this region 6h in the front view of the rear cover 6, water droplets can be efficiently collected in the second recess 49e.

The second recess 49e has a bottom wall 49d forming a concave shape, a part of the outer wall 49b, and a side wall 49g, and the bottom wall 49d of the second recess 49e serves as a side wall of the second recess 49e. And higher than the lower end of the side wall 49g. As a result, the bottom wall 49d of the second recess 49e is located higher than a part of the outer wall 49b forming the side wall of the second recess 49e and the lower end of the side wall 49g, so that the bottom wall 49d of the second recess 49e is formed. It functions as a rib and can maintain the strength of the lower frame 49 in which the second recess 49e is formed.

The present disclosure is not limited to that of the above embodiment, and can be modified as follows.

In the above embodiment, the guide portions 6fa and 6ga are formed by folding back the sharp portions, but the present invention is not limited to this. For example, a groove may be provided instead of the folded structure, and the flowing water may be guided to the recess along the groove.

In addition, by appropriately combining any of the above-mentioned various embodiments and modifications, the effects of each can be achieved.

Although the present disclosure has been fully described in connection with preferred embodiments with reference to the accompanying drawings, various modifications and modifications are obvious to those skilled in the art. It should be understood that such modifications and amendments are included therein, as long as they do not deviate from the scope of the present disclosure by the appended claims. In addition, changes in the combination and order of elements in each embodiment can be realized without departing from the scope and ideas of the present disclosure.

The heating cooker according to the present disclosure is useful as, for example, a high-frequency heating cooker, a high-frequency heating cooker with a steam generator, or a high-frequency heating cooker with a heater.

1 Heating cooker 3 Housing 3a Front frame 3b Opening 5 Heating chamber 5a Upper wall 5b 5c Side wall 5d Rear wall 5e Bottom wall 6 Rear cover 6a Vent hole 6b Ventilation hole 6c Ventilation hole 6d Recess 6e Upper wall 6f 1st flange 6fa Guide part 6g 2nd flange part 6ga Guide part 6h area 6k Flat part 7 Door 7a Handle 9 Display part 11 Operation part 12a, 12c Metal plate 13 1st tray 14 Water supply tank 15 2nd tray 15a Water storage part 16 Steam generator 17 Fan 19 Intake hole 20 Exhaust hole 21 Fan case 21a Recess 21b Flat part 23 Seeds heater 24 Leg 25 Flange part 27 Water receiving part 29 Exhaust duct 30 Machine room 31 Exhaust passage 33 Vent hole 35 Exhaust pipe 35a Upper opening 35b Lower opening 37 Bottom plate 49 Lower frame 49a First recess 49b Outer side wall 49c Side wall 49d Bottom wall 49e Second recess 49g Side wall 49h Bottom wall

Claims (4)

With a heating room
An exhaust passage located behind the rear wall, through which steam flows through a hole drilled in the rear wall of the heating chamber, and
A rear cover that has a vent for steam to flow from the exhaust passage to the outside and is arranged so as to cover the rear of the exhaust passage.
A lower frame arranged below the heating chamber and
With
The rear cover has a flange portion that is bent forward at the bottom.
The lower frame has a recess formed in the rear portion.
The recess is located below the lower end of at least a part of the flange.
A heating cooker configured to collect a part of the water condensed on the inner surface of the rear cover into the recess via the upper surface of the flange portion. The flange portion has a guide portion for guiding water to the recess.
The heating cooker according to claim 1. The flange portion is formed directly below the region of the rear cover facing the exhaust passage in the front view of the rear cover.
The cooker according to claim 1 or 2. The recess has a bottom wall and a side wall that form a recess.
The side wall of the recess comprises a part of the outer wall of the lower frame.
The side wall of the recess extends below the bottom wall of the recess.
The cooking cooker according to any one of claims 1 to 3.

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