JP2011112251A - Indoor circulation type range hood - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an indoor circulation type range hood considering installation of a smoke removal filter to maintain the smoke removing performance of the smoke removal filter over a long time. <P>SOLUTION: The indoor circulation type range hood is provided with the smoke removal filter 18, a deodorization filter 19 and a dehumidification filter 20 downstream of a grease filter 11 in a circulation air duct 3 leading from a hood part 1 sucking and capturing contaminated air G to a blowout port 4 to an indoor side. The smoke removal filter 18 is arranged on an approximately half side on the cross section of the circulation air duct 3 intersecting with the flow direction of the contaminated air G, and the upstream side can be opened/closed by a filter opening/closing mechanism 21 and is opened when the contaminated air G including smoke of grilled food passes therethrough. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an indoor circulation range hood that sucks and captures contaminated air from an electric stove that does not generate combustion gas or an electromagnetic induction heating cooker, and returns the air to the room after cleaning.

In recent years, instead of gas stoves that generate combustion gases containing harmful substances such as carbon dioxide and carbon monoxide during cooking, an electric stove that can be cooked without generating combustion gases, or an electromagnetic induction heating cooker ( IH cooking heaters) have become widespread, and many households adopt an all-electric kitchen.
In cooking using an induction heating cooker that does not generate combustion gas, the polluted air may be purified because the generated polluted air does not contain harmful substances such as carbon dioxide and carbon monoxide. If possible, it can be circulated (refluxed) in the room. By adopting an indoor circulation system that cleans contaminated air and returns it to the room, problems such as changes in indoor air pressure, pollution of the indoor environment, and loss of air conditioning energy can be solved. .

  Therefore, during cooking, contaminated air from a cooking pan or electromagnetic induction heating cooker is sucked and captured, and pollutants contained in the contaminated air, such as oil and fat (oil smoke), odor (cooking odor), moisture An indoor circulation type range hood has been proposed that has an air purification function for returning (steam, humidity), etc. from clean air by separating and removing it from the contaminated air (see, for example, Patent Document 1). .

Japanese Patent Laid-Open No. 2002-340377 (see paragraph numbers 0020 and 0021 and FIG. 2)

  By the way, fats and oils, odor components, and moisture contained in the contaminated air are efficiently separated and removed from the contaminated air by the grease filter, deodorizing filter, and dehumidifying filter, but grilled fish, yakitori, In order to separate and remove smoke generated during cooking of grilled meat and other grilled products from contaminated air, it is essential to use a high-density smoke removal filter that is finer than the smoke particle size.

However, high-density smoke removal filters such as HEPA filter (High Efficiency Particulate Air Filter) and ULPA filter (Ultra Low Penetration Air Filter) have high initial pressure loss due to high filter medium density, and clogging in a short period of time. It is an air filter that easily occurs.
Therefore, smoke is continuously removed like grease filters, deodorizing filters, and dehumidifying filters in an environment where polluted air that contains contaminants such as fats and oils, odor components, and moisture is generated in addition to smoke. If a filter is used, clogging will be further accelerated, and maintenance of smoke removal performance (smoke collection efficiency) will be shortened, so cleaning must be repeated frequently. That is, there is a problem in handling that the troublesome smoke removal filter must be cleaned on a daily basis.

  Accordingly, the present invention has been made to solve the above-described problems, and it is an object of the present invention to provide an indoor circulation type range hood having a smoke removal filter installation structure capable of maintaining smoke removal performance over a long period of time.

As a result of intensive studies over many years and repeated various experiments, the present inventor has found that the above problems can be solved, and has reached the present invention.
That is, the present invention is an indoor circulation type range hood that sucks and captures contaminated air generated during cooking, returns the air to the room after cleaning the contaminated air,
A smoke removing filter and a deodorizing filter are respectively provided on the downstream side of the grease filter in the circulation air passage from the suction port for sucking and capturing the contaminated air to the air outlet to the room, and the smoke removal filter is provided in the circulation air passage. Smoke is contained in a part of the cross section that intersects with the flow direction of the contaminated air, or on a substantially half side, and can be opened and closed by a filter opening / closing mechanism arranged on the upstream side thereof. It is configured to be opened when contaminated air passes through.
Here, as the suction port, a suction space secured between the capture space provided in the hood portion, the downward opening edge of the capture space and each peripheral edge of the rectifying plate, or a heating cooker The suction port provided in the kitchen counter etc. around can be mentioned. And it is preferable to adopt a configuration in which the opening and closing operation of the smoke removal filter by the filter opening and closing mechanism is performed at least by automatic detection by the smoke sensor or in conjunction with the operation of the cooking menu of the heating cooker. Become.
Moreover, it becomes suitable to provide a dehumidification filter in the said circulation air path.

According to such a configuration, smoke generated during cooking, for example, smoke generated during cooking of grilled fish, yakitori, yakiniku and other grilled foods, is sucked in from the suction port and captured and purified. When the air is later returned from the outlet to the room, the smoke removal filter is closed by a filter opening / closing mechanism. When the contaminated air containing the smoke of the grilled material is sucked and captured from the suction port and cleaned and then returned to the room from the blowout port, the smoke removal filter is opened.
Thereby, only the contaminated air containing the smoke of the grilled material passes through the smoke removal filter.

In the present invention, it is an indoor circulation type range hood that sucks and captures the contaminated air generated during cooking, cleans the contaminated air, and returns it to the room,
A smoke removing filter and a deodorizing filter are respectively provided on the downstream side of the grease filter in the circulation air path from the suction port through which the contaminated air is sucked and captured to the blowout port to the room. The circulation air passage is detachably arranged so as to be partitioned in a direction intersecting the flow direction of the contaminated air, and is inserted into the circulation air passage when contaminated air containing smoke passes. It is comprised so that it may be carried out.
Here, as the suction port, a suction space secured between the capture space provided in the hood portion, the downward opening edge of the capture space and each peripheral edge of the rectifying plate, or a heating cooker The suction port provided in the kitchen counter etc. around can be mentioned. And the structure which the insertion / extraction operation | movement to the said circulation air path of the said smoke removal filter by the said filter removal / insertion mechanism is performed at least by the automatic detection by a smoke sensor or in conjunction with operation of the cooking menu of a heating cooker It is preferable to do this.
Moreover, it becomes suitable to provide a dehumidification filter in the said circulation air path.

According to such a configuration, the smoke generated during cooking, for example, the smoke generated during cooking of grilled fish, yakitori, grilled meat and other grilled foods is sucked and captured from the suction port and purified. When the air is later returned from the outlet to the room, the smoke removal fill is drawn out of the circulation air path by a filter take-in / out mechanism. And when the polluted air containing the smoke of the pottery is sucked and captured from the suction port and cleaned and then returned to the room from the outlet, the smoke removal filter is inserted into the circulation air passage .
Thereby, only the contaminated air containing the smoke of the grilled material passes through the smoke removal filter.

According to the present invention, the polluted air containing smoke generated during cooking of the baked goods passes through the grease filter and passes through the downstream smoke removal filter, deodorization filter, and dehumidification filter to be purified. Later, circulation is performed to return the room from the outlet of the circulation air passage. In other words, the contaminated air during cooking that does not generate smoke of grilled food passes through the grease filter, passes through the deodorizing filter and the dehumidifying filter without passing through the smoke removing filter, and then purified. Circulation returning to the room from the outlet of the circulation air passage is performed.
Thereby, it can suppress that a smoke removal filter clogs in a short period, and can maintain the smoke removal performance (smoke collection efficiency) of a smoke removal filter over a long term. That is, it is possible to provide an indoor circulation type range hood having a smoke removal filter installation structure that eliminates daily cleaning such as frequent cleaning of the smoke removal filter and improves maintenance management.

Further, according to the present invention, in addition to the above-described action, the smoke removal filter can be opened and closed in order to allow only the contaminated air containing the smoke of the ceramics to pass through the smoke removal filter, and can be inserted into and removed from the circulation air passage. Uses a configuration in which the operation is performed by automatic detection by a smoke sensor or in conjunction with an ON / OFF operation of a grill switch such as grilling fish in the cooking menu, such as operation of a cooking menu of a heating cooker This eliminates the need for separate manual operation for opening / closing the smoke removal filter and inserting / removing it into / from the circulation air path at the start or end of cooking of the grilled food.
Thereby, the indoor circulation type range hood provided with the installation structure of the smoke removal filter excellent in usability can be provided.

It is a vertical side view which shows the indoor circulation type range hood which concerns on 1st Embodiment. It is a cross-sectional top view which expands and shows the principal part of the same range hood. It is a perspective view which shows an example of the smoke removal filter applied to the same range hood, and a filter opening-and-closing mechanism. It is a cross-sectional top view which expands and shows the principal part of the indoor circulation type range hood which concerns on 2nd Embodiment. It is a perspective view which shows an example of the smoke removal filter applied to the same range hood, and a filter taking-in / out mechanism.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.

FIG. 1 is a longitudinal side view showing an indoor circulation type range hood according to the first embodiment, and FIG. 2 is a cross-sectional plan view showing a part thereof enlarged.
In addition, in this embodiment, among the wall-mounted or ceiling-mounted types that are installed almost directly above a heating cooker such as an electric stove (not shown) or an electromagnetic induction heating cooker (IH cooking heater), A wall-mounted indoor circulation type range hood (hereinafter simply referred to as “range hood”) A will be described as an example, but is not limited thereto.
This range hood A sucks and captures the polluted air G that rises from a cooking device or cooking pan during cooking, and pollutants contained in the polluted air G, such as oil and fat (oil smoke), odor components, etc. Then, after separating and removing moisture (water vapor, hot smoke) and smoke from the baked goods from the contaminated air G, it is configured to be returned to the room as purified clean air.

≪Configuration of range hood≫
As shown in FIG. 1, the range hood A has a flat (thin) hood portion 1, a blower unit 2 mounted on the hood portion 1, and a fan casing 2 b, which will be described later, on one end of the fan casing 2 b. The circulation air path 3 is attached so that the other side is connected to the kitchen K side in the vicinity of the kitchen ceiling K1.
The range hood A is formed at a height from the top plate 1a of the hood 1 to the kitchen ceiling K1 so as to hide the blower unit 2 and the circulation air passage 3, and the other end side of the circulation air passage 3 is A curtain plate 5 having an outlet 4 to be connected is detachably provided.

≪Food part composition≫
As shown in FIG. 1, the hood portion 1 is formed in a flat box shape that opens downward. And the food | hood part 1 is provided with the connection port 6 in 1a. This communication port 6 is for communicating the inside of the exhaust box 2a described later of the blower unit 2 and the hood portion 1, and is provided at a substantially central portion located on the rear half side of the top plate 1a.

Further, the hood portion 1 includes an oil panel 7 on the inner side of the opening so as to partition the connecting port 6 side and the downward opening side on the lower side of the communication port 6. Thereby, the capture space M which has a desired depth inside the opening and sucks and captures the contaminated air G is provided. That is, the capture space M serving as a suction port for the circulation air passage 3 is provided inside the opening of the hood portion 1 by the oil panel 7.
Further, the hood portion 1 includes a rectifying plate 10 so as to secure a suction gap 9 to the capture space M between the downward opening edge portion 8 of the capture space M. As a result, the contaminated air G that rises (rises) from the cooking device, cooking pan, or the like is sucked into the capture space M vigorously from the suction gap 9 along the rectifying plate 10.

  Moreover, the hood part 1 is equipped with the grease filter 11 so that removal is possible in the bulging bottom part of the capture space M located in the downstream of the connection port 6. FIG. As a result, when the contaminated air G sucked and captured in the capture space M from the suction gap 9 passes through the grease filter 11, the oil and fat contained in the contaminated air G is separated and captured. Yes.

Moreover, the food | hood part 1 is provided with the operation switch part 12 in the front part 1b located in the cooker side (left side of a paper surface) as shown in FIG.
This operation switch part 12 is an operation (ON / OFF) of the exhaust device 2b to be described later of the blower unit 2 and illumination (LED on the kitchen wall surface K2) provided on the rear side of the downward opening edge 8 of the capture space M (LED side). , Fluorescent lamps, incandescent bulbs, etc.) 13 are configured to include touch or push type switches for performing on / off operation of 13.
The operation switch unit 12 is provided with switches (not shown) for manually performing an opening / closing operation by the filter opening / closing mechanism 21 and an insertion / removal operation by the filter insertion / removal mechanism 29 of the smoke removal filter 18 described later. It is like that.

≪Blower unit configuration≫
As shown in FIG. 1, the blower unit 2 is located vertically on the exhaust box 2 a and on the rear half side excluding the front half side communicating with the communication port 6 of the hood part 1 in the exhaust box 2 a. And an exhaust device 2b.

≪Exhaust box configuration≫
The exhaust box 2a is an upstream extended air passage of the circulation air passage 3, and as shown in FIG. 1, the top half of the top plate 1a is connected to the communication port 6 of the hood portion 1 so as to communicate with the front half. It is formed in a substantially square shape in a longitudinal sectional view attached by screwing or the like.

≪Exhaust system configuration≫
As shown in FIG. 1, the exhaust device 2 b is configured such that an exhaust fan (centrifugal fan, a centrifugal fan, and a fan casing 14 provided with a connection cylinder to which a circulation air passage is connected is supported on a fan motor 16. A multi-blade fan) 15 is accommodated on the same axis.

≪Circulation airway configuration≫
The circulation air passage 3 is sucked and captured in the capture space M of the hood portion 1 by the suction force of the exhaust device 2 b, passes through the grease filter 11 from the capture space M, and flows in through the exhaust box 2 a and the fan casing 14. From the outlet 4 as clean air, which is cleaned by separating and removing contaminants such as smoke, odor (cooking odor) and moisture (steam, moisture) contained in the contaminated air G from the contaminated air G It is an air passage for returning to the room (kitchen).
As shown in FIG. 1, the circulating air passage 3 has one end side (upstream side) connected to the fan casing 14 of the exhaust device 2 b via a connecting cylinder 17 and the other end side (downstream side) to the curtain plate 5. It is formed in a predetermined length with a cross-sectional shape connected to the outlet 4 provided. A smoke removing filter 18, a deodorizing filter 19, and a dehumidifying filter 20 are respectively provided on the downstream side of the grease filter 11 in the circulation air passage 3, specifically on the downstream side of the fan casing 14 in which the exhaust fan 15 is accommodated. They are arranged sequentially.

≪Configuration of smoke removal filter, deodorization filter, dehumidification filter≫
The smoke removal filter 18 is, for example, an air filter having a high filter medium density, such as a HEPA filter (High Efficiency Particulate Air Filter) or a ULPA filter (Ultra Low Penetration Air Filter).
The deodorizing filter 19 is, for example, an adsorption filter made of a porous material such as activated carbon that separates and removes odor components from the contaminated air G by an adsorption action.
The dehumidifying filter 20 separates and removes moisture from the contaminated air G by, for example, moisture absorption by silica gel or heat absorption by a Peltier module.

  Although not shown in the drawings, these filters 18, 19, and 20 are supported by rails provided on the inner surface of the circulation air passage 3, so that they can be inserted into and removed from the circulation air passage 3. ing. That is, when cleaning is performed regularly, the curtain plate 5 is removed, and the opening / closing door provided on the air passage wall in the circulation air passage 3 where the filters 18, 19, 20 are arranged is opened and circulated. The air passage 3 can be taken out.

In the present embodiment, as shown in FIGS. 1 and 2, a filter opening / closing mechanism 21 is disposed on the upstream side of the smoke removal filter 18.
More specifically, the smoke removal filter 18 is substantially half of the cross section of the circulation air passage 3 that intersects the flow direction of the contaminated air G and has a substantially square shape, as indicated by a two-dot chain line in FIG. The upstream side of the filter is opened and closed by a filter opening / closing mechanism 21.
As a result, the filter media density is high, so the initial pressure loss is large, and the smoke removal filter (smoke collection efficiency) is maintained over a long period of time by suppressing the clogging of the smoke removal filter that is likely to clog in a short period of time. Yes.

<Configuration of filter opening / closing mechanism>
FIG. 3 is a perspective view showing an example of a filter opening / closing mechanism. Here, description will be made with reference to FIGS. 1 and 2 as appropriate.
The filter opening / closing mechanism 21 opens the upstream side of the smoke removal filter 18 and does not contain the smoke when the contaminated air G containing the smoke of the grilled material is sucked and captured in the capture space M of the hood 1. When the contaminated air G is sucked and captured in the capture space M, the upstream side of the smoke removal filter 18 is closed.
2 and 3, the filter opening / closing mechanism 21 includes a shutter 21a, a support frame 21b that slidably supports the shutter 21a in the circulation air passage 3, and an actuator 21c that slides the shutter 21a. It is prepared for.

  The shutter 21 a is formed to be approximately the same as the shape (size) of the smoke removal filter 18 in plan view. Then, both short side edges parallel to the sliding direction are provided with connecting portions 22 projecting outward, and are connected to a cylinder (rod) 23 of the actuator 21c by a connecting pin 24 or the like.

As shown in FIGS. 2 and 3, the support frame 21 b is formed in a substantially square shape in a plan view that is substantially the same shape as the cross-sectional shape of the circulation air passage 3 by using a mold having a substantially U-shape in a cross-sectional view. Has been. Specifically, it forms a cross-sectional shape perpendicular to the flow direction of the contaminated air G in the circulation air passage 3 where the smoke removal filter 18 is disposed, and is screwed or other fastening means inside the air passage. It is formed to be installed inside.
In addition, a long hole 25 is formed on the substantially half side of the opposite side frame portions of the support frame 21b so that the connecting portion 22 of the shutter 21a protrudes outward.
Thereby, as shown in FIG. 1, the support frame 21b is attached to the upstream side of the smoke removal filter 18 in the circulation air passage 3 in a state where the shutter 21a is slidably supported (direction in which the smoke removal filter 18 is opened and closed). It is installed inside.

As shown in FIG. 2, the actuator 21 c is disposed outside the opposing air passage wall of the circulation air passage 3, and has a long hole 25 of the support frame 21 b and a long hole 26 opened in the air passage wall. The tip of the cylinder 23 is connected by a connecting pin 24 to the connecting portions 22 on both sides of the shutter 21a protruding outward from the connecting pin 22. That is, the shutter 21a is slid in a direction to open and close the smoke removal filter 18 by the actuators 21c on both sides.
The actuator 21c is a manual operation by a shutter opening / closing switch (not shown) provided in the operation switch unit 12 of the hood unit 1 or a cooking menu operation of a heating cooker. It is driven by ON / OFF operation of the grill switch or by automatic smoke detection by a smoke sensor.

For example, as shown in FIG. 1, the smoke sensor S1 disposed on the downward opening edge 8 on the rear side (kitchen wall K2 side) of the hood 1 will be specifically described as an example. Of the smoke sensors consisting of optical, ionization, etc., the optical smoke sensor receives scattered light intensity from smoke particles that have entered the optical path of the light, so that grilled fish, grilled chicken, grilled meat from the grill of a heating cooker, etc. It is configured to detect the presence of grilled smoke.
Thus, when the smoke sensor S1 detects smoke in the polluted air G rising from the grill of the heating cooker and the detection signal is output, the actuator 21c opens the cylinder 23 in the direction to open the shutter 21a. Drive. When the output of the detection signal from the smoke sensor S1 is interrupted, the cylinder 23 is driven in a direction to close the shutter 21a.

  In the present embodiment, after the filter opening / closing mechanism 21 configured in this way is attached to the downstream side of the smoke removal filter 18, the filter opening / closing mechanism 21 is disposed outside the air passage wall on the extension line of the actuator 21c in the sliding opening / closing direction of the shutter 21a. A hermetic cover 27 is attached to prevent leakage of contaminated air G from the long holes 25 and 26 communicating with the circulation air passage 3.

Further, in the present embodiment, as shown in FIG. 1, the circulation air passage 3 located on the downstream side of the exhaust fan 15 of the exhaust device 2b is provided with a rotary air passage cutoff damper 28 as a fire prevention measure. . The air path closing damper 28 closes the circulation air path 3 by a motor (not shown) that is driven when a detection signal is output from a temperature sensor S2 or the like disposed inside the front side of the hood portion 1.
That is, in the vicinity of the hood unit 1, the polluted air G that is hotter than the heat generated during normal cooking soars from a heating cooker or the like, and when the temperature sensor S 2 detects the high heat, the detection signal is sent to the motor control unit. (Not shown) and the like, and as indicated by a two-dot chain line in FIG. 1, the air passage blocking damper 28 closes the circulation air passage 3.

[Description of operation]
Next, the range hood A to which the filter opening / closing mechanism 21 of the smoke removing filter 18 configured as described above is applied will be briefly described. Here, description will be made with reference to FIG. 1 as appropriate.
When the contaminated air G soaring from a cooking device or the like is sucked and captured in the capture space M from the suction gap 9 of the hood portion 1 during cooking without generating smoke of the grilled food, the shutter 21a constituting the filter opening / closing mechanism 21 is used. The upstream side of the smoke removal filter 18 is closed.
Thus, the contaminated air G from which the oil and fat has been separated and removed from the capture space M through the grease filter 11 does not pass through the smoke removal filter 18, and the downstream deodorizing filter 19 and the downstream dehumidifying filter 20. The air is returned to the room (kitchen) from the outlet 4 as clean air from which odors and moisture are separated and removed.

When the polluted air G that soaks up and includes smoke generated during cooking of the grilled food is sucked and captured in the capture space M from the suction gap 9 of the hood 1, the smoke sensor S 1 smokes the presence of smoke. Detection is performed from the particle or smoke concentration, and the detection signal is output from the smoke sensor S1. Then, as shown in FIG. 1, the cylinder 23 of the actuator 21c constituting the filter opening / closing mechanism 21 is driven, and the shutter 21a is slid in the opening direction to open the upstream side of the smoke removal filter 18.
As a result, the contaminated air G from which the oil and fat has been separated and removed from the capture space M through the grease filter 11 passes through the smoke removal filter 18, and after the smoke is separated and removed, the deodorizing filter 19 on the downstream side, Further, the air passes through the dehumidifying filter 20 on the downstream side and is returned to the room (kitchen) from the outlet 4 as clean air from which odors, moisture and the like are separated and removed.
When cooking of the grilled food is finished and the output of the detection signal from the smoke sensor S1 is interrupted, the cylinder 23 is driven, and the shutter 21a is slid in the closing direction to close the upstream side of the smoke removal filter 18.

FIG. 4 is an enlarged cross-sectional plan view showing a main part of the indoor circulation type range hood according to the second embodiment.
In this embodiment, after the contaminated air G that does not contain grilled smoke such as grilled fish, grilled chicken, and grilled meat is sucked and captured in the capture space M of the hood portion 1 serving as a suction port and then cleaned, it is discharged from the blowout port 4. In the case of returning to the room, the smoke removal fill 18-1 employs a configuration in which the smoke removal filter 18-1 is drawn out of the circulation air passage 3 by the filter take-in / out mechanism 29. Since the other constituent elements are basically the same as those of the above-described embodiment, the same reference numerals are given to the same constituent elements, and redundant description is omitted.

  That is, in this embodiment, as shown in FIG. 4, the smoke removal filter 18-1 that is substantially the same shape and the same size as the cross-sectional shape of the circulation air passage 3 in which the smoke removal filter 18-1 is arranged. The filter removal mechanism 29 allows the upstream and downstream sides of the circulation air passage 3 to be separated from each other so that clogging of the smoke removal filter 18-1 is suppressed.

≪Configuration of filter insertion and removal mechanism≫
FIG. 5 is a perspective view showing an example of a filter insertion / removal mechanism. Here, description will be made with reference to FIG. 4 as appropriate.
When the contaminated air G containing the smoke of the grilled material is sucked and captured in the capture space M of the hood portion 1, the filter take-out mechanism 29 moves the smoke removal filter 18-1 into the circulation air passage 3 upstream and downstream. When the contaminated air G not containing the smoke is sucked and captured in the capture space M, the smoke removal filter 18-1 is pulled out of the circulation air path 3.
As shown in FIGS. 4 and 5, the filter insertion / removal mechanism 21 includes a support frame 29 a that slidably supports the smoke removal filter 18-1 in and out of the circulation air passage 3, and a smoke removal filter 18-1. And an actuator 29b for sliding operation.

  As shown in FIGS. 4 and 5, the support frame 29 a is formed in a horizontally-long rectangular shape in a plan view using a mold material having a substantially U-shape in a cross-sectional view. Specifically, in the cross section of the circulation air passage 3 that has a substantially regular quadrilateral shape in plan view, among the air passage walls on the three sides excluding one side, it is provided along both the air passage walls on the opposite sides, and Along the two long mold members extending in parallel toward the outside of the circulation air passage 3 at a length corresponding to the wall width (air passage width) of the air passage wall and the remaining air passage wall on one side. It is formed in a horizontally-long rectangular shape from a short-shaped material that is installed inside.

Moreover, the upper part and the lower part at the open end side of both long mold members that the support frame 29a opens are connected by a connecting frame member 30, respectively. The parallelism of the externally extended parts of both long mold materials is maintained. In the external extension portion, a long hole 32 is formed on both sides of the smoke removal filter 18-1 for projecting the connecting portion 31 provided in an outward projecting shape.
Thereby, as shown in FIG. 4, the support frame 29 a is in a state in which the smoke removal filter 18-1 is slidably supported, and the actuator 29 b is disposed outside the air passage wall facing the circulation air passage 3. Then, the tip of the cylinder 33 is connected by the connecting pin 34 to the connecting portions 31 on both sides of the smoke removing filter 18-1 projecting outward from the long hole 32 of the support frame 29a. That is, the smoke removal filter 18-1 is configured to be taken in and out of the circulation air passage 3 by the actuator 29b.

[Description of operation]
Next, the range hood to which the filter insertion / removal mechanism 29 of the smoke removal filter 18-1 configured as described above is applied will be briefly described. Here, description will be made with reference to FIG. 4 as appropriate.
When the contaminated air G soaring from a cooking device or the like is sucked and captured in the capture space M from the suction gap 9 of the hood portion 1 during cooking in which no smoke of grilled food is generated, the actuator 29b constituting the filter insertion / extraction mechanism 29 is used. The smoke removal filter 18-1 is drawn out of the circulation air path 3 as shown by a two-dot chain line in FIG.
As a result, the contaminated air G from which the fats and oils have been separated and removed from the capture space M through the grease filter 11 does not pass through the smoke removal filter 18-1, and is further dehumidified on the downstream side and further on the downstream side. It passes through the filter 20 and is returned to the room (kitchen) from the outlet 4 as clean air from which odors, moisture and the like are separated and removed.

When the polluted air G that rises and contains smoke generated during cooking of the grilled food is sucked and captured from the suction gap 9 into the capture space M, the smoke sensor S1 as described in detail in the above embodiment. When the presence of smoke is detected from smoke particles, smoke density, etc., and the detection signal is output from the smoke sensor S1, the cylinder 33 of the actuator 29b constituting the filter take-in / out mechanism 29 is driven as shown in FIG. Then, the smoke removal filter 18-1 is inserted into the circulation air passage 3 to be included.
As a result, the polluted air G from which the fats and oils have been separated and removed from the capture space M through the grease filter 11 passes through the smoke removal filter 18-1, and after the smoke is separated and removed, the deodorizing filter on the downstream side 19. Further, the air passes through the dehumidifying filter 20 on the downstream side, and is returned to the room (kitchen) from the outlet 4 as clean air from which odors and moisture are separated and removed.
When the cooking of the grilled food is finished and the output of the detection signal from the smoke sensor S1 is interrupted, the cylinder 33 is driven to draw the smoke removal filter 18-1 out of the circulation air path 3.

The specific configuration of the embodiment of the present invention is not limited to each of the above-described embodiments, and there is a design change or the like without departing from the gist of the present invention described in claims 1 to 5. However, it is included in the present invention.
For example, the smoke removal filters 18, 18-1, the deodorization filter 19, and the dehumidification filter 20 from the upstream side to the downstream side of the circulation air passage 3 are arranged with the smoke removal filter 18 on the downstream side of the deodorization filter 19 and the dehumidification filter 20. The smoke removal filters 18 and 18-1 can be arranged between the deodorizing filter 19 and the dehumidifying filter 20.
In addition to the smoke removal filters 18 and 18-1, the deodorizing filter 19 and the dehumidifying filter 20, the dust removing filter for separating and removing dust, dust and the like contained in the contaminated air is provided in the circulation air passage 3. For example, an appropriate purification filter required for cleaning contaminated air can be optionally provided.

Further, a combination of gear mechanisms using a motor as a slide drive of the shutter 21a for opening and closing the upstream side of the smoke removal filter 18 and a drive for taking in and out the smoke removal filter 18-1 with respect to the circulation air passage 3 , Racks and pinions, or wires and pulleys.
The shutter is not limited to the slide opening / closing method, and can be a rotation opening / closing method. That is, the upstream side of the smoke removal filter 18 can be opened and closed using a rotary damper system or the like.

Moreover, the exhaust apparatus 2b can be arrange | positioned in the downstream of the circulation air path 3, etc. which are located in the blower outlet 4 side. In this case, a connection form in which the upstream side of the circulation air passage 3 is directly connected to the communication port 6 of the hood portion 1 can be employed.
In addition, as a range hood, the kitchen counter around the cooking device is provided with a suction port, and an exhaust device 2b is provided under the counter, etc., as a circulation air path leading to a blowout port opened in the kitchen wall or kitchen ceiling Thus, an indoor circulation range hood having a configuration in which a smoke removal filter, a deodorization filter, and a dehumidification filter are provided in the circulation air passage can be provided.

  Further, as the attachment of the smoke removal filter to the circulation air path, it is possible to adopt a form in which the smoke removal filter is crossed obliquely other than the form orthogonal to the flow direction of the contaminated air as in the above-described embodiment. In this case, the filter opening / closing mechanism is arranged on the upstream side in accordance with the oblique form of the smoke removal filter.

A Range hood 1 Hood part 2 Blower unit 3 Circulating air path 4 Air outlet 11 Grease filter 18, 18-1 Smoke removal filter 19 Deodorizing filter 20 Dehumidification filter 21 Filter opening / closing mechanism 21a Shutter 21b Support frame 21c Actuator 29 Filter insertion / extraction mechanism 29a Support Frame 29b Actuator M Capture space (suction port)
G Contaminated air

Claims (5)

An indoor circulation type range hood that sucks and captures contaminated air generated during cooking, cleans the contaminated air, and returns it to the room.
On the downstream side of the grease filter in the circulation air path from the suction port for sucking and capturing the contaminated air to the blowout port to the room, each is provided with a smoke removal filter and a deodorization filter,
The smoke removal filter is disposed at a part or substantially half of a cross section intersecting the flow direction of the contaminated air in the circulation air passage, and is provided by a filter opening / closing mechanism disposed on the upstream side thereof. An indoor circulation type range hood characterized in that it is openable and closable and is opened when contaminated air containing smoke passes through.   2. The room according to claim 1, wherein the opening / closing operation of the smoke removal filter by the filter opening / closing mechanism is performed at least by automatic detection by a smoke sensor or in conjunction with an operation of a cooking menu of a heating cooker. Circulating range hood. An indoor circulation type range hood that sucks and captures contaminated air generated during cooking, cleans the contaminated air, and returns it to the room.
On the downstream side of the grease filter in the circulation air path from the suction port where the contaminated air is sucked and captured to the blowout port to the room, a smoke removing filter and a deodorizing filter are provided, respectively.
The smoke removal filter is arranged so as to be able to be inserted and removed so as to partition the circulation air passage in a direction intersecting the flow direction of the contaminated air by a filter taking-in / out mechanism, and the polluted air containing smoke passes therethrough. An indoor circulation type range hood is characterized in that it is inserted into the circulation air passage when it is inserted.   The insertion / removal operation of the smoke removal filter to / from the circulation air path by the insertion / removal mechanism is performed at least by automatic detection by a smoke sensor or in conjunction with a cooking menu operation of a heating cooker. The indoor circulation type range hood of Claim 3.   The indoor circulation type range hood according to claim 1 or 3, wherein a dehumidification filter is provided in the circulation air passage.

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