JPH10176855A - Range hood - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate mounting and cleaning of a filter by a method wherein a feed box connected to a feed duct communicated to the outside of a house is placed on the top plate of a hood body, and the discharge port of the feed box is connected to the inflow port of the gollow front plate of the hood body, and a suction filter is removable mounted on the inflow port. SOLUTION: A feed box 8 is placed in the upper surface of a top plate 1a of a good body 1 and a multublade fan 8b is contained in a casing 8a. A suction port 8c of the casing 8a is connected to an air feed duct 9 communicated with the outdoors, and a delivery port 8d is joined with an inflow port 14 of a hollow front plate 3 attached to the front opening part of the hood body 1. The hollow front plate 3 is formed such that a front plate 3a joined with the front opening part of the hood body 1 and frieze board part 3b vertically arranged between the top plate 1a and a ceiling are integrally formed. At an internal part, a partition plate 15 is mounted in a state to be positioned on the line of the lower hole edge of the inflow port 14, and a feed filter 16 is removably supported from an insertion port 17 opened to the partition plate 15 to a spot situated downstream from the inflow port 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a range hood for local exhaust installed above a cooking appliance such as a gas range (gas stove) or an electric range in a kitchen. The present invention relates to a simultaneous supply / discharge type range hood that sucks and exhausts steam and the like to the outside and supplies fresh outdoor air to a room through a range hood.

[0002]

2. Description of the Related Art A range hood for local exhaust installed above a cooking utensil in a kitchen is a so-called exhaust exhaust hood that sucks and exhausts combustion waste gas, oil smoke, odor, and the above generated by cooking to the outside. Range hoods are common. However, today's houses are becoming more airtight and there is almost no draft, so if the range hood is operated with the windows closed, exhaust will not be sufficient and the kitchen (indoors) will not work. ) Becomes negative pressure, which may hinder opening and closing of the door. Of course, as a means for solving the above-mentioned problem, ventilation may be performed by opening a window or the like, but in reality, it is actually forgotten. Therefore, various simultaneous supply / discharge type range hoods that can introduce (air supply) outdoor fresh air into a room without opening a window have been developed and put into practical use. For example, there are Japanese Utility Model Publication No. 2-42986 and Japanese Utility Model Publication No. 3-47159.

[0003] As a method of air supply in the simultaneous supply / exhaust type range hood, a natural air supply type in which an air supply port to the room provided in the range hood and the outside are connected by an air supply duct, There is a forced air supply type in which a blower is installed in the middle of the route. The air introduced by any of the above-described methods is supplied into the room through an air supply port (blow-out port) provided in the range hood, and the air supply port is closed before closing the front opening of the hood body. It is opened at the lower end of the plate or at the lower end of the peripheral wall of the hood body and the front plate.

[0004]

However, recently, the outside air contains dust, pollen which may cause allergic diseases depending on the season, and NOx and other harmful substances. Also, when outside air is supplied (introduced) into a room, fly and mosquitoes may enter the room depending on the season, and it is necessary to consider preventing these.

[0005] For this purpose, a combination of a rain cover, a slit-shaped bird proof and a net is used in the opening of the air supply duct on the outer wall side of the building, but they take in the outside air. At present, it is arranged on the outer wall side on the distal end side of the duct, so that it is difficult to perform maintenance such as cleaning as well as replacement of the filter. Moreover, dust and the like adhere to the filter due to long-term air supply,
When clogging occurs, there is a problem that the use of outside air cannot be achieved.

[0006] The present invention has been made in view of the above-mentioned problems of the prior art.
An object of the present invention is to provide a range hood in which a filter for removing dust, insects, and the like contained in outside air supplied to a room can be easily mounted, cleaned, cleaned, and replaced.

[0007]

In order to solve the above-mentioned problems, a technical measure taken by the present invention is to mount an air supply box connected to an air supply duct communicating with the outdoors on a top plate of a hood body. The outlet of the air supply box is connected to the inlet of a hollow front plate attached to the front opening of the hood body, and an air supply filter is detachably attached to the inlet, and air is further supplied to the hollow front plate. It features a mouth-open configuration. The hollow front plate connected and attached to the front opening of the hood body,
It is also possible to adopt a form in which a curtain plate portion is integrally provided at the upper end. The introduction of the outside air into the air supply box is performed by a forced air supply in which a fan is incorporated in the box to forcibly suck and introduce the outside air, or a natural air supply in which a fan is not provided and the outside air is introduced by a pressure difference between the room and the outside. Either may be used. Further, the connection between the discharge port of the air supply box and the inflow port of the hollow front plate is made via packing. In this case, the packing may be attached to the air supply box side or to the hollow front plate side.

The air supply filter has a well-known structure in which a net or a nonwoven fabric is molded with a synthetic resin frame such as a heat-resistant ABS resin. If a net made of charged fibers is used, it is effective for removing adhesion of fine pollen and the like. The above-described configuration for detachably supporting the air supply filter includes a filter receiving frame attached along the upper edge and the left and right side edges of the inflow port so as to surround the inflow port opened in the hollow front plate,
A filter insertion port opened below the filter receiving frame in a partition plate horizontally mounted on the hollow front plate, a packing attached to the insertion port, and a filter support piece provided on the rear side of the insertion port. And it is supported detachably with respect to the hollow front plate.

[0009] The air supply opening formed in the hollow front plate is not limited to the lower portion of the front plate, and may be provided in the upper front surface of the front plate.
In that case, the inside of the hollow front plate may be entirely a single space, but the space is vertically divided by a partition plate in order to effectively supply air from two upper and lower locations, and the space is introduced into the partition plate. An air distribution hole through which air passes may be opened. The position of the partition plate that partitions the inside of the hollow front plate up and down may be arranged below the lower hole edge of the inflow port so that the inflow port communicating with the discharge port of the air supply box is located in the upper space. Alternatively, the inlet may be located above the upper edge of the inlet such that the inlet is located in the lower space.

[0010] According to the above configuration, the air supply filter can be easily attached to and detached from the lower opening of the hood, and the filter can be easily cleaned, cleaned, and replaced.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings for the case of forced air supply. A range hood A is provided with an exhaust blower 2 inside a hood main body 1 having an open front and lower surface. This is a well-known type in which a front plate 3 is detachably attached to a front opening of the hood main body 1 in a housed state. That is, the lower plate 4 is provided inside the hood body 1.
A space 6 for accommodating the exhaust blower 2 is defined by the filter and the filter 5, and a discharge port of the exhaust blower 2 accommodated and installed in the space 6 is connected to the exhaust duct 7 via the top plate 1 a of the hood body 1. It is configured to be connected.

An air supply box 8 for forcibly supplying outside air is mounted and fixed on the upper surface of the top plate 1a of the hood body 1. The air supply box 8 includes a volute-shaped casing 8a and a multi-blade fan 8b housed in the casing 8a. The multi-blade fan 8b is configured to be driven by a motor 11. . The suction port 8c of the casing 8a of the air supply box 8 is connected to an air supply duct 9 communicating with the outside, and the discharge port 8d of the casing 8a of the air supply box 8 is connected to the front opening of the hood main body 1. It is configured to be joined to the inflow port 14 of the front plate 3, and a packing 22 is attached to the front surface of the peripheral edge of the discharge port 8d. still,
Although the air supply box 8 covers the casing 8a with a case, it is a matter of course that the casing may also serve as the case. A shutter 10 for opening and closing the duct (passage) is provided in the middle of the air supply duct 9 so that outside air does not flow into the room when the range hood is not used.

The hollow front plate 3 to which the discharge port 8d of the air supply box 8 is joined and connected is mounted on the front plate portion 3a joined to the front opening of the hood body 1 and on the upper surface of the top plate 1a of the hood body 1. The air supply box 8 to be placed, the air supply duct 9 connected to the box 8, and the exhaust duct 7 connected to the exhaust blower 2 are located between the top plate 1a and the ceiling so as not to be seen from the front. The lower plate air inlet 12 is formed at the lower end of the front plate 3a by integrating the vertically arranged curtain plate 3b and the lower plate.
Upper air inlets 13 are respectively opened at the upper front of the curtain plate 3b,
An inflow port 14 is formed on the rear surface of the curtain plate portion 3b so as to be joined to the discharge port 8d of the air supply box 8.

An inlet is provided inside the hollow front plate 3.
The partition plate 15 is attached so as to be substantially in line with the top plate 1a of the hood main body 1 so as to be located on the line of the lower hole edge of 14;
An insertion port 17 for an air supply filter 16 is opened in the partition plate 15, and the downstream side of the inflow port 14 from the insertion port 17 (in the hollow front plate).
The air supply filter 16 is configured to be detachably mounted and supported. The structure for supporting the air supply filter 16 includes:
A filter receiving frame 18 attached along the upper edge and the left and right edges of the inlet 14 so as to surround the inlet 14 formed in the hollow front plate 3.
The packing 20 attached to the rising piece 19, the front edge of the insertion port 17 is raised upward, and the rear edge of the insertion port 17 is bent vertically downward, and the tip thereof is directed forward. The filter support piece 21 is formed by bending the filter support piece 21 horizontally. The filter support piece 21 supports the lower part of the air supply filter 16.

The air supply filter 16 installed from the insertion port 17 to the inflow port 14 has a well-known structure in which a net or a nonwoven fabric 16a is molded with a synthetic resin frame 16b such as a heat-resistant ABS resin. By utilizing the elasticity of the synthetic resin frame 16b constituting the air supply filter 16, it can be inserted from the insertion port 17 and mounted in the filter receiving frame 18. In addition, a fiber charged with static electricity (charged fiber) (for example,
If you use a filter made of Sumitomo 3M Limited's charged air filter material, trademark "Filterlet"),
Micro dust, fine pollen and the like floating in the air can be adsorbed and removed, and the purification of the air supplied into the room can be further enhanced. Further, a deodorizing member, for example, a material in which activated carbon granules are attached to a net or a nonwoven fabric 16a constituting the air supply filter 16 may be used to remove the dust and the odor at the same time. Further, the attachment position of the net or nonwoven fabric 16a in the air supply filter 16 may be on the front side of the synthetic resin frame 16b, or on the rear side, or even at an intermediate position. Since the synthetic resin frame 16b projects beyond the surface of the net or nonwoven fabric 16a to which dust or dust adheres, the dust or dust attached to the net is received by the synthetic resin frame 16b, and the air supply filter 16 It is possible to reduce dust and dirt falling from the filter during attachment and detachment.

An air supply distribution hole 23 is formed in the partition plate 15. The size and number of the air supply distribution holes 23 are determined according to the amount of air blown out from the lower air supply port 12 and the upper air supply port 13 described above. Further, the air supply distribution hole 23 may be opened based on the above-described contents to fix the air supply distribution,
It is also possible to adjust the opening amount (or opening area) of the air supply distribution hole by an external operation, whereby the upper and lower air supply amounts can be freely adjusted.

With the above configuration, the outside air is introduced into the hollow front plate 3 through the air supply duct 9 by the driving of the fan 8 b provided in the air supply box 8, and is provided at the inlet 14 of the hollow front plate 3. Dust, pollen, insects and the like contained in the air introduced by the supplied air supply filter 16 are removed, and a part of the purified air is supplied to the upper air supply port 13 opened in front of the curtain plate 3b. From the room. Further, the purified air flows into the front plate portion 3a through the distribution air supply holes 23 of the partition plate 15, and
Air is supplied downward from a lower air supply opening 12 formed at the lower end of the front plate portion 3a. In addition, if the lower air supply port 12 is opened at the lower end of the three surfaces of the front surface and the left and right side surfaces of the hollow front plate 3, the lower air supply is formed in a substantially U-shape in a plane, and should be exhausted from the gas range. It surrounds the target gas, prevents diffusion of cooking waste gas, and enhances the collection effect.

The air supply filter 16 mounted on the downstream side of the inflow port 14 can be easily removed from the lower opening of the hood through the insertion opening 17 formed in the partition plate 15 of the hollow front plate 3. Cleaning, care and replacement can be easily performed. Therefore, the function of the filter can be maintained for a long time.

[0019]

According to the range hood of the present invention, the air supply filter can be mounted on the hollow front plate connected to the front opening of the hood, and the filter can be cleaned, cleaned and replaced. Can be easily performed. Claim 3
According to the configuration described in (1), the attachment / detachment operation of the air supply filter can be easily performed from the lower opening of the hood using the elasticity of the filter.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view showing an example of an embodiment of a range hood according to the present invention.

FIG. 2 is a cutaway front view of the same part.

FIG. 3 is an enlarged sectional view showing a connection portion between an air supply box and a hollow front plate and a mounting portion of an air supply filter.

FIG. 4 is an exploded perspective view of FIG.

[Explanation of symbols]

 A ... Range hood 1 ... Hood body 2 ... Exhaust blower 3 ... Hollow front plate 8 ... Air supply box 8d ... Discharge port 9 ... Air supply duct 12, 13 ... Air supply port 14 ... Inlet 16 ... Air supply filter 16a ... Net or non-woven fabric 16b ... synthetic resin frame 17 ... insertion opening 18 ... filter receiving frame 21 ... filter support piece

Claims (3)

[Claims] 1. A simultaneous supply / discharge type range hood having an air supply mechanism for sucking and exhausting smoke, odor, steam, and the like generated by cooking to the outside while supplying fresh outdoor air to a room. An air supply box connected to an air supply duct communicating outdoors is placed on the top plate of the hood body, and the outlet of the air supply box is connected to the inlet of the hollow front plate that is connected to the front opening of the hood body A range hood, wherein an air supply filter is detachably attached to the inflow port, and an air supply port is opened in the hollow front plate. 2. The air supply filter according to claim 1, further comprising: a filter receiving frame mounted along an upper edge and left and right side edges of the inlet so as to surround the inlet formed in the hollow front plate; and a partition horizontally mounted on the hollow front plate. The filter insertion port opened below the filter receiving frame on the plate, a packing attached to the insertion port, and a filter support piece provided on the rear side of the insertion port, and are detachably supported. The described range hood. 3. The range hood according to claim 1, wherein the air supply filter is formed by molding a net or a nonwoven fabric with a frame made of a synthetic resin.