JP6522904B2 - Range food - Google Patents

Description

  The present invention relates to a range hood, and more specifically, for example, it is installed above a heating cooker such as a gas stove, an electric stove, and an induction induction cooking heater (IH heater), and exhausts smoke or steam generated during cooking. A range hood for sucking, collecting and discharging to the outside.

  In a range hood, in order to collect and recover the oil contained in the exhaust, for example, a grease filter is provided on the upper side of the fan rotor to adsorb and collect the oil in the exhaust drawn into the fan rotor (patent document (1) or the one in which oil attached to a fan casing is introduced downward and led to a predetermined oil pocket (see Patent Document 2).

Japanese Patent Application Laid-Open No. 60-14029 JP, 2000-329387, A

  However, in Patent Document 1 in which the oil component in the exhaust is collected using a grease filter, the oil component existing as oil particles and oil droplets in the exhaust can be collected to some extent, but as a vapor in the exhaust The oil present was apt to pass through the grease filter. In addition, it was necessary to clean or replace the grease filter in a timely manner, which required a lot of maintenance.

  On the other hand, in Patent Document 2 which guides collected oil to a predetermined oil pocket, the oil pocket can be removed and the collected oil can be discarded, and the oil pocket itself can be cleaned relatively easily, and maintenance is Although it is easier than the former, the oil collection efficiency is low because it is a collection form that only oil components contained in the exhaust gas are expected to adhere to various places such as fan casings. The

  The present invention has been made in view of such points, and it is an object of the present invention to provide a range hood capable of efficiently collecting oil contained in exhaust gas and easily discarding it.

  In order to solve the above-mentioned subject, the present invention is constituted as follows.

(1) The range hood according to the present invention is a range hood in which an exhaust fan is disposed in a fan casing, and a suction port for exhaust is formed on a bottom surface of the fan casing, wherein the exhaust hood is formed integrally with the exhaust fan. capable with mounted, the oil collecting member that have a large number of vent holes exhaust passes, with detachably provided below the oil collecting member, flowing down from the oil collecting member collecting And an oil tray having an oil reservoir for storing oil , wherein the oil collecting member has a projection cut and raised between the adjacent vent holes along the rotation direction of the exhaust fan .

  According to the present invention, the oil droplets and oil particles in the exhaust gas collide with the oil collecting member rotating at high speed integrally with the exhaust fan, and are adhered and collected, and the turbulence generated when the exhaust gas passes through the vent The flow causes a pressure fluctuation, and the pressure fluctuation causes oil vapor contained in the exhaust gas to be easily condensed, and is efficiently deposited and collected in a vent or the like.

The oil adhering to and collected on the oil collecting member is collected downward to the oil tray, and the oil collected can be easily discarded by removing the oil tray as appropriate.
In addition, since the oil collection member has a projection cut and raised between the adjacent air holes along the rotation direction of the exhaust fan, turbulence generation in the vicinity of the oil collection member is promoted, and pressure fluctuation is generated. It is possible to promote condensation of oil vapor accompanying with the above, and to perform adhesion collection of oil more efficiently.

( 2 ) In a preferred embodiment of the present invention, the bottom surface of the fan casing is inclined downward toward the exhaust suction port side.

  According to this embodiment, the oil in the exhaust gas delivered by the exhaust fan without being collected by the oil collection member adheres to the inner surface of the fan casing and flows down by its own weight. The oil flowing down can be smoothly guided along the sloped bottom surface of the fan casing and collected in the oil tray.

  As mentioned above, according to the range hood which concerns on this invention, the oil component in exhaust_gas | exhaustion can be collected efficiently using the fan for exhaustion rotated at high speed, and it can discard easily.

It is the perspective view which looked at the range hood from the downward direction. It is the disassembled perspective view which looked at the range hood from the downward direction. It is a vertical front view of an important section. It is AA sectional drawing in FIG. FIG. 2 is a perspective view of an exhaust fan as viewed from below. It is a front view of an operation part. It is a control block diagram. It is a vertical front view of the principal part in a reference example . It is the perspective view which looked at the fan for exhaust_gas | exhaustions of a reference example from the downward direction. It is a longitudinal cross-sectional front view of the principal part in the exhaust fan of embodiment of this invention . It is a longitudinal cross-sectional view of the exhaust fan in a reference example . It is a vertical front view of the exhaust fan in a reference example .

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Prior to the description of the embodiment of the present invention, a reference example having a configuration common to the embodiment of the present invention will be described.

FIG. 1 is a perspective view of the range hood 1 of the reference example as viewed from below, FIG. 2 is an exploded perspective view thereof, and FIG. 3 is a front view of the main part taken longitudinally.

The range hood 1 of this reference example is disposed above the stove installed in a kitchen or the like (not shown), and is connected to the lower end of the box-shaped main housing 3 and the main housing 3 in which the exhaust fan 2 is installed. A hood case 4 provided, an interior panel 5 mounted on the inside of the hood case 4, a flow control plate 6, and the like are provided.

  A fan casing 7 is fixedly disposed inside the body housing 3, and a motor 8 for driving the fan is fixedly disposed longitudinally in a state in which the fan casing 7 partially enters the ceiling portion of the fan casing 7. An exhaust fan 2 composed of a sirocco fan is detachably connected to the extended rotary shaft 9.

  A suction port 10 facing the lower end suction portion of the exhaust fan 2 is formed on the bottom surface of the fan casing 7, and the fan casing 7 is communicatively connected to an exhaust duct 11 extending outward of the main body housing 3. ing.

  The hood case 4 is formed in a shallow box shape having a rectangular shape in plan view and the entire lower surface is opened. As shown in FIG. 2, the left and right locking claws 12 provided on the lower end side of the back side wall portion In addition, the rear end corner of the interior panel 5 is screwed and fixed to the hood case 4 after the rear end of the interior panel 5 is locked.

  The rear side wall portion of the food case 4 is equipped with a lighting lamp 13 and various electric devices, which are covered by the interior panel 5. Further, the interior panel 5 is provided with a lamp cover 14 made of a glass plate or a light transmitting resin plate so as to be openable and closable, and the front surface of the illumination lamp 13 is covered with the lamp cover 14 in a panel mounted state. The front surface of the food case 4 is equipped with an operation unit 15 for performing various operations and settings, and a space formed between the food case 4 and the interior panel 5 is a wiring space.

  An oil tray 16 having an annular oil reservoir 16a, which is an oil reservoir for receiving and recovering the oil flowing down from the suction port 10, is mounted on the ceiling portion of the interior panel 5. At four corners of the oil tray 16, as shown in FIG. 2, locking holes 17 and locking recesses 18 are provided, and these are slid from the lateral direction to locking brackets 50 provided on the fan casing 7. By locking, the oil tray 16 can be detachably connected to the fan casing 7.

  The straightening vane 6 is formed in a substantially rectangular flat plate shape which is slightly smaller than the downward opening of the hood case 4. The straightening plate 6 locks the connection fitting 19 with holes provided on the left and right sides of its back end to the left and right hooks 20 provided on the back side of the interior panel 5, and rectifies around the locking point By lifting and swinging the plate 6, the lock pins 22 provided on the left and right sides of the interior panel 5 are biased into engagement with the connecting fittings 21 with holes that are provided on the right and left sides of the current plate 6 so as to The board 6 is configured to be fixed to the interior panel 5 at a predetermined loading position.

  When the flow straightening plate 6 is set at the loading position, an annular flow passage 23 is formed between the outer peripheral end of the flow straightening plate 6 and the peripheral wall portion of the interior panel 5. Further, a passage 24 in the hood is formed between the lower surface of the interior panel 5 and the upper surface of the straightening vane 6, and the passage 23 and the suction port 10 communicate with each other through the passage 24 in the hood. Here, by forming the annular flow passage 23 in a narrow width, the exhaust gas that strikes the straightening vane 6 flows into the narrow flow passage 23 at a high speed, and as a result, to the side of the casing. The overflow of the exhaust is suppressed, and the capture rate of the exhaust passing through the inlet 10 is improved.

  Further, a recessed portion 6a corresponding to the lamp cover 14 is formed at the central portion of the far end side of the rectifying plate 6, and the light from the illumination lamp 13 is widely irradiated forward and downward without being blocked by the rectifying plate 6. It is supposed to be.

  As shown in FIG. 6, the operation unit 15 provided on the front of the hood case 4 includes a lighting switch S1, a driving switch S2 for switching the wind power, a timer switch S3, a cutting switch S4 serving as a child lock switch, There are provided switches such as a maintenance sign switch S5 and the like, and monitor lamps L1 to L8 consisting of LEDs corresponding to the respective switches.

  As shown in FIG. 7, the command signal from the operation unit 15 is input to the control unit 40, and the on / off of the exhaust fan 2 and the wind power switching, the on / off of the illumination lamp 13, etc. are controlled according to the signal. At the same time, the monitor lamps L1 to L8 are turned on in response to the operating state.

  That is, each time the illumination switch S1 is pressed, the illumination lamp 13 is switched on and off, and when it is illuminated, the monitor lamp L1 is illuminated. When the operation switch S2 is pressed, the exhaust fan 2 is activated, and whenever it is pressed, the wind power is sequentially switched in a circulating manner, and the corresponding wind power monitor lamps L2 to L4 are turned on. When the timer switch S3 is pressed, the automatic operation time is set, and after the set time has elapsed, the fan operation is automatically stopped. Further, each time the timer switch S3 is pressed, the automatic operation time is cyclically switched to "5 minutes", "15 minutes", "30 minutes", and the corresponding monitor lamps L5 to L7 are turned on. When the release switch S4 is pressed, the operating exhaust fan 2 is stopped, when it is pressed for 3 seconds or more, the child lock is engaged, and when pressed for 3 seconds or more again, the lock is released. The maintenance sign switch S5 is for selecting the maintenance time, and can be switched between "30 days", "60 days" and "90 days" at each press operation. Accumulation of days is started along with the setting operation, and when the expiration date is reached, the monitor lamp L8 is turned on (or blinks) to urge the user to take care such as cleaning. When the maintenance sign switch S5 is pressed for 3 seconds or more, the buzzer 41 (see FIG. 7) sounds to reset the integration days and the monitor lamp L8 is turned off.

  4 is a cross-sectional view taken along line A-A in FIG. 3, and FIG. 5 is a perspective view of the exhaust fan as viewed from below.

  With reference to FIGS. 3 to 5, in the exhaust fan 2 composed of a sirocco fan, a large number of fan blades 27 have a constant pitch in the circumferential direction across the upper support plate 25 and the lower support plate 26 formed in a flat ring shape. The upper and lower intermediate portions of the fan blade 27 are supported by the intermediate support plate 28 in a penetrating manner.

  At the center of the lower surface of the intermediate support plate 28, a fan boss 29 is connected and fixed, and at the center of the fan boss 29, a connecting boss portion 29 a which can be inserted and removed from the downward rotating shaft 9 of the motor 8. It projects through the top and protrudes upward. The fan boss 29 can be connected to and released from the rotating shaft 9 inserted into the connection boss portion 29a by a known one-touch attachment / detachment means.

  That is, at the upper and lower intermediate positions of the rotation shaft 9, the drive pin 30 for torque transmission is fixedly penetrated laterally and near the lower portion of the rotation shaft 9, the connection groove 31 is formed. When the exhaust fan 2 is lifted and the connection boss portion 29a of the fan boss 29 is inserted from below into the rotary shaft 9, the V-shaped engagement groove 32 formed in a cross shape at the upper end of the connection boss portion 29a is rotated. The rotating shaft 9 follows and rotates so that the drive pin 31 of the shaft 9 is engaged. When the connecting portion 29a is inserted into the rotary shaft 9 to a predetermined depth and the drive pin 30 is properly engaged with the engagement groove 32, the not-shown lock claw built in the fan boss 29 is automatically rotated. The rotary shaft 9 and the exhaust fan 2 are integrally rotatably connected by being urgedly engaged with the connection groove 31 of the shaft 9.

  In addition, when the release knob 33 provided on the outer peripheral portion of the fan boss 29 is pushed toward the center of the boss, the built-in lock claw is forcibly retracted in the engagement releasing direction against the engagement biasing force. In this state, the exhaust fan 2 can be pulled down from the rotary shaft 9 by pulling it downward, and the exhaust fan 2 can be attached and detached at the time of cleaning by one-touch operation.

In the present embodiment , the exhaust fan 2 having the above-described configuration is provided with a function of collecting the oil component in the exhaust gas, and the oil collecting means will be described below.

That is, an oil collecting member 35 is attached and fixed to the lower half of the exhaust fan 2 for adhering oil droplets in the exhaust gas or condensing oil vapor in the exhaust gas. The oil collecting member 35 is made of, for example, a thin plate made of metal such as iron or stainless steel having excellent corrosion resistance, and has a cylindrical peripheral portion 35a as a cylindrical portion and a circular upper bottom portion 35b. It has a bottomed cylindrical shape. The oil collecting member 35 is
A large number of vent holes 36a and 36b having a small cross-sectional area are densely arranged and formed on each of the peripheral portion 35a and the upper bottom portion 35b along the inner periphery of the fan blade 27 group. The shape of the vent is not particularly limited, and may be, for example, a circle, an oval, a rectangle, a cross, or a slit as described later. The oil collecting member 35 may be made of a punching metal formed by punching and forming the vent holes uniformly, or a net made of a wire rod.

  The upper bottom portion 35b is disposed slightly apart from the intermediate support plate 28 so that the air holes 36b of the upper bottom portion 35b are not blocked by the radial arms 28a provided to the intermediate support plate 28. .

The range hood 1 according to the present reference example is configured as described above, and the negative pressure generated with the rotation of the exhaust fan 2 causes the exhaust gas to flow from the flow path 23 formed on the outer periphery of the current plate 6. The exhaust air sucked into the suction port 10 and sent out by the exhaust fan 2 is guided by the fan casing 7 and guided to the exhaust duct 11.

  When the exhaust gas passes through the vent holes 36a and 36b of the oil collecting member 35, fine oil droplets contained in the exhaust adhere to the surface of the oil collecting member 35 and the vent holes 36a and 36b, and also in the exhaust gas. The oil vapor contained in the water condenses on the surface of the collection member 35 and the vent holes 36a and 36b due to the change in atmospheric pressure caused by the turbulent flow generated when the exhaust gas passes through the vent holes 36a and 36b. Then, although the oil adhering to the surface of the oil collection member 35 and the air holes 36a and 36b in this manner is dispersed as a plurality of fine oil droplets, the plurality of dispersed fine oil droplets are dispersed with each other. When a part of them comes in contact, they are united by the surface tension of the oil and deformed into large particles having an increased volume per drop, and flow down by their own weight while the fan is stopped and are collected in the oil pool 16a of the oil tray 16.

  Further, the oil adhering to the inner surface of the fan casing 7 flows down by its own weight, is guided to the suction port 10 through the casing bottom surface 7a, and is collected in the oil reservoir 16a of the oil tray 16. Here, the bottom surface 7a of the fan casing 7 is inclined downward toward the suction port 10, and the oil can easily flow down to the oil tray 16 without staying on the bottom surface 7a.

  As described above, the oil tray 16 is connected by slidingly engaging the locking holes 17 and the locking recesses 18 at the four corners with the locking metal 50 provided on the fan casing 7 from the lateral direction. Therefore, the oil tray 16 can be removed by a lateral slide operation. Therefore, when the maintenance sign comes out, etc., after the flow straightening plate 6 is pivoted downward, the oil tray 16 can be removed and the accumulated oil can be discarded.

  In addition, oil guard coating is given to the surface of each member which exhaust air contacts, such as current plate 6, interior panel 5, and fan casing 7, oil repellency is given, and the flow of attached oil is performed smoothly. It is possible to easily wipe off the adhered oil. In addition, the oil tray 16 is coated with a hydrophilic coating, and by soaking the oil tray 16 in water, the adhering oil floats up and is easily removed.

This reference example can also be implemented in the following form.

  (1) As shown in FIG. 8 and FIG. 9, when the peripheral portion 35a of the oil collecting member 35 is formed in a downwardly expanding tapered cone shape, the oil adhering to the vent hole 36a is downwardly moved by the centrifugal force accompanying the fan rotation. It becomes easy to flow down and oil can be efficiently recovered to the oil tray 16.

  In addition, when the vent hole 36a is formed in a vertically elongated slit shape extending, for example, oil attached to the vent hole 36a is more likely to flow down than in the case of forming a circular vent hole.

  That is, since the oil collection member has a large number of air vents, the oil attached and collected in the upper air vents sequentially flows down to the air vents below it. Tends to stagnate at the lower end of the By forming the vent holes 36a in the form of vertically elongated slits, the number of vent holes in the vertical direction can be reduced as compared with the circular vent holes, and oil stagnation at the lower end of the vent holes can be suppressed. Oil can be efficiently recovered to the oil tray 16.

Further, in the embodiment of the present invention, as shown in FIG. 10, the small projection 37 is cut and formed on the upper bottom portion 35b of the oil collection member 35 in the middle portion of the vent hole 36b adjacent in the rotational direction. The occurrence of turbulent flow of exhaust in the vicinity of the upper bottom portion is promoted, and oil vapor can be effectively condensed for adhesion and recovery due to pressure fluctuation accompanying the turbulent flow. The small projections 37 may be provided on the circumferential portion 35a, or may be provided on both the upper bottom portion 35b and the circumferential portion 35a.

  (2) If the bottomed cylindrical oil collection member 35 is configured to be removable from the exhaust fan 2, the oil collection member 35 is also disassembled and easily cleaned when the exhaust fan 2 is removed and cleaned. can do.

(3) In the reference example , the oil collecting member 35 is additionally attached to the exhaust fan of the old structure to constitute the exhaust fan 2 having an oil content collecting function, as shown in FIG. The intermediate support plate 28 itself is also used as an oil collecting member provided with a group of air holes 36b for collecting oil, and a cylindrical shape provided with a group of air holes 36a along the inside of the lower half of the fan blade. It can also be carried out in a form in which the oil collecting member 35 is deployed. According to this, the weight reduction of the exhaust fan 2 can be achieved as compared with the case where the bottomed cylindrical oil collecting member 35 is used.

  (4) In the exhaust fan 2 having a relatively small width in the rotational axis direction, as shown in FIG. 12, a cylindrical shape provided with a group of vent holes 36 only along the inner periphery of the fan blade 27 It can also be carried out in a form in which the oil collecting member 35 of

  (5) The oil collecting member 35 may be disposed along the outer periphery of the exhaust fan 2.

Reference Signs List 1 range hood 2 exhaust fan 7 fan casing 7a bottom surface 10 suction port 16 oil tray 16a oil reservoir 35 oil collecting member 36 air hole 36a air hole 36b air hole 37 small protrusion

Claims (2)

A range hood having an exhaust fan disposed in the fan casing, and a suction port for exhaust being formed on a bottom surface of the fan casing,
Together they are integrally rotatably attached to the exhaust fan, and the oil collection member that have a large number of vent holes exhaust passes,
And an oil tray having an oil reservoir portion which is detachably provided below the oil collecting member and which collects the collected oil flowing down from the oil collecting member .
The oil collection member has a projection cut and raised between the adjacent vent holes along the rotational direction of the exhaust fan.
Range hood characterized by. The bottom surface of the fan casing is inclined downward toward the exhaust suction port side.
The range hood according to claim 1.

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