JPH10132348A - Filter cleaning apparatus for range hood - Google Patents

Abstract

PROBLEM TO BE SOLVED: To uniformly clean the entire surface by flowing down a cleaning liquid uniformly and stably over the entire surface of a filter. SOLUTION: A cleaning liquid conduit 24 is mounted along an upper edge of a filter 11, and a plurality cleaning liquid supply holes 32 are formed having a cylindrical drain part 33 in a bottom of the cleaning liquid conduit 24. Hereby, the cleaning liquid from each cleaning liquid supply hole 32 correctly falls down as a stripe of flow so that the cleaning liquid flows down uniformly and safely along the whole surface of the filter 11 to clean the entire surface uniformly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for cleaning a filter in a range hood which collects smoke, steam, odor and the like generated during cooking and discharges it to the outside.

[0002]

2. Description of the Related Art As a range hood, for example, Japanese Patent Publication No.
As shown in JP-A-54618, a plurality of baffles are attached to an intake air passage that communicates between a blower and an intake port, and the oil smoke flowing through the intake air passage is forcibly bent by the baffle plate, thereby causing The fat particles adhere to the baffle plate or the inner wall of the air passage to separate and remove the fat. It is known that a cleaning nozzle sprays a cleaning liquid onto the baffle plate or the inner wall of the air passage to wash off the attached oil and fat.

[0003] With this range hood, since the grease attached to the baffle plate and the inner wall of the air passage can be washed off with a cleaning liquid and cleaned, there is no need to manually clean the baffle plate or the inner wall of the air passage.

[0004]

As a range hood, a filter is mounted inside a hood body, a suction part and a discharge part are formed inside the hood body with a filter as a boundary, and a blower is mounted at the discharge part. It has been known.

With this range hood, air can be sucked in from a suction portion by driving a blower, the sucked air can be sucked into a discharge portion through a filter, and discharged to the outside through an exhaust duct or the like. In addition, oil and water vapor in the sucked air can be collected by the filter, and the amount of oil and water vapor in the air flowing through the discharge duct is significantly reduced, so that oil and water vapor condenses in the discharge duct and flows out from the discharge duct. Nothing.

In the above-mentioned range hood, the inside of the hood body is divided into a suction portion and a discharge portion by a filter, so that the filter has a large area. For this reason, when the cleaning liquid is sprayed on the filter by the cleaning nozzle as in a conventional range hood, the cleaning liquid is not uniformly sprayed on the entire surface of the filter. Can't clean.

Accordingly, an object of the present invention is to provide a range hood filter cleaning device which can solve the above-mentioned problems.

[0008]

According to a first aspect of the present invention, the inside of the hood body 1 is divided into a suction portion 12 and a discharge portion 13 by a filter 11, and the air in the discharge portion 13 is sucked and discharged by a blower 16. In a range hood in which the air in the suction section 12 is sucked into the discharge section 13 through the filter 11, a cleaning liquid gutter 24 is attached along the longitudinal direction of the upper edge of the filter 11, and the bottom of the cleaning liquid gutter 24 The cleaning liquid supply hole 32 provided with a cylindrical draining portion 33 in the filter 11
Is a filter cleaning device for a range hood in which a plurality of cleaning liquids are formed at intervals along the longitudinal direction of the cleaning liquid supply to the cleaning liquid gutter 24.

The second invention is a filter cleaning device for a range hood in which a fluid flow resistor 34 is provided at the bottom of the cleaning liquid gutter 24 according to the first invention.

According to a third aspect of the present invention, a washing liquid receiving tray 20 is provided at the lower edge of the filter 11 according to the first or second aspect of the present invention, and a washing liquid tank 22 is provided below the washing liquid receiving tray 20 so as to extend along the filter 11. This is a range hood filter cleaning device in which the flowing cleaning liquid is collected in the cleaning liquid tank 22 and the cleaning liquid in the cleaning liquid tank 22 is supplied to the cleaning liquid gutter 24 by a cleaning liquid supply pump 27.

[0011]

According to the first aspect of the present invention, the cleaning liquid in the cleaning liquid gutter is drained by the cylindrical draining section 33 to stabilize the flow, and the flow is guided so that the cleaning liquid supply holes 3 are formed.
From 2, they are correctly dropped and supplied as a single stream toward the upper edge of the filter 11.

As a result, the cleaning liquid is uniformly dropped and supplied to the upper edge of the filter 11 and flows down uniformly and stably over the entire surface of the filter 11, so that the entire surface of the filter 11 can be uniformly cleaned.

According to the second aspect of the present invention, the cleaning liquid supplied into the cleaning liquid gutter 24 flows into the cleaning liquid supply hole 32 through the fluid flow resistor 34, so that, for example, the length of the cleaning liquid gutter 24 is extended by one cleaning liquid supply pipe. The turbulent pressure of the cleaning liquid intensively supplied at one location in the direction becomes uniform by the fluid flow resistor 34, and a stable cleaning liquid pressure is applied to each cleaning liquid supply hole 32 to uniformly supply the cleaning liquid.

Accordingly, even when the cleaning liquid is supplied to the cleaning liquid gutter 24 by, for example, one cleaning liquid supply pipe, the cleaning liquid is uniformly dropped and supplied to the upper edge of the filter 11 and flows down uniformly and stably over the entire surface of the filter 11. Therefore, the entire surface of the filter 11 can be uniformly cleaned.

According to the third aspect of the present invention, the cleaning liquid flowing down along the filter 11 is supplied again to the cleaning liquid gutter 24, so that the cleaning liquid can be circulated and reused.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a hood 1 has a rear hood 2 and a front hood 3. The rear hood body 2 includes a pair of side plates 5 and a top plate 6 that face the rear plate 4.
It has a box-like shape with the lower part and the front part opened. The front hood body 3 includes a front plate 7 and a pair of opposed side plates 8.
And a top plate 9 to form a box having a lower portion and a rear portion opened.

The rear hood 2 and the front hood 3 are connected to form a hood 1. The hood body 1 has a box shape with an open lower part.

A partition plate 10 is mounted between lower portions of the pair of side plates 5 of the rear hood body 2. This partition plate 10
A filter 11 is attached vertically between the top plate 6 and the top plate 6. The inside of the hood body 1 is divided into a suction part 12 and a discharge part 13 which are opened at a lower part with a filter 11 as a boundary.

A blower 16 provided with a fan 15 rotated by an electric motor 14 is provided in the discharge section 13. The suction section of the blower 16 opens to the discharge section 13, and an exhaust duct is connected to the discharge side. I have.

Thus, when the fan 15 is rotated by the electric motor 14, air is sucked from the suction portion 12. The sucked air flows into the discharge unit 13 through the filter 11. The air flowing into the discharge unit 13 is discharged from the discharge side of the blower 16 to a discharge duct.

A washing liquid receiving tray 20 is mounted on the upper surface of the partition plate 10. The lower portion of the filter 11 is attached to the washing liquid receiving tray 20 with a bracket 21. The partition plate 10
The washing liquid tank 22 is attached to the lower surface of the. As a result, the washing liquid that has flowed down along the filter 11 is washed by the washing liquid tray 2.
0, and flows into the cleaning liquid tank 22 from the discharge port 23.

A cleaning liquid gutter 24 is attached to the top plate 6 of the rear hood 2. The cleaning liquid gutter 24 has a bracket 2
The upper part of the filter 11 is mounted via 5. The cleaning liquid in the cleaning liquid tank 22 is discharged to a cleaning liquid supply pipe 28 by a cleaning liquid supply pump 27 driven by an electric motor 26, and is supplied to the cleaning liquid gutter 24 by the cleaning liquid supply pipe 28.

As shown in FIGS. 2 and 3, the filter 11 is mounted between a pair of side plates 5 facing each other. The cleaning liquid gutter 24 has a substantially planar rectangular shape whose upper part is opened by the bottom plate 30 and the peripheral wall plate 31. The cleaning liquid gutter 24 is attached to the upper part of the filter 11 over the entire length in the longitudinal direction, and the cleaning liquid supply pipe 28 is attached to the longitudinal center of the rear part 31 a of the peripheral wall plate 31. The cleaning liquid gutter 24 may be a closed box having an upper plate.

The bottom plate 30 is bent in a substantially stepped shape so that the front portion 30a is lower than the rear portion 30b. The cleaning liquid gutter 24 has a deeper front portion and a shallower rear portion.

A plurality of cleaning liquid supply holes 32 are formed in the front of the bottom plate 30 at intervals in the longitudinal direction. A tubular drainer 33 is integrally provided downward and continuously with the opening edge of the cleaning liquid supply hole 32. For example, the cleaning liquid gutter 24 is made of metal, and the front side 30 a of the bottom plate 30 is burred to form a cleaning liquid supply hole 3 having a drainage portion 33.
There are two.

The cleaning liquid gutter 24 may be an injection-molded article made of resin.

As described above, the cleaning liquid supplied to the cleaning liquid gutter 24 accumulates in the portion near the front as shown in FIG. 3 and is supplied from each cleaning liquid supply hole 32 to the upper edge of the filter 11. At this time, a cylindrical draining part 33 provided integrally and downward integrally with the opening edge of the cleaning liquid supply hole 32 is provided.
As a result, the cleaning liquid is drained from the lower surface of the bottom plate 30 and guided so as to flow directly downward, so that the cleaning liquid a flows from the cleaning liquid supply holes 32 toward the upper edge of the filter 11 as shown in FIG. It is correctly supplied as a single stream.

Therefore, the cleaning liquid is uniformly dropped and supplied to the upper edge portion of the filter 11, and the cleaning liquid flows down the entire surface of the filter 11 uniformly and stably, so that the entire surface of the filter 11 can be uniformly cleaned.

FIG. 4 shows a second embodiment of the present invention.
At the front portion of the cleaning liquid gutter 24, there is provided a fluid flow resistor 34 such as a sponge or a stack of a plurality of wire meshes, which serves as a resistance to fluid flow.

In this way, the cleaning liquid supply pipe 28
The cleaning liquid discharged into the cleaning liquid tank 24 from the cleaning liquid flows through the fluid flow resistor 34 and falls from the cleaning liquid supply hole 32, so that the turbulent pressure of the discharged cleaning liquid is directly applied to the cleaning liquid supply hole 3.
Regardless of 2, the cleaning liquid supply holes 32 are supplied with a stable cleaning liquid pressure and are uniformly dropped and supplied.

Further, since only the fluid flow resistor 34 is provided, it is possible to reduce the size of the cleaning liquid gutter, and there is little possibility of being restricted by the height and depth of the range hood, and it is simpler and less expensive. Can be manufactured.

More specifically, the cleaning liquid is sent from the cleaning liquid tank 22 below the range hood to the cleaning liquid gutter 24 through the cleaning liquid supply pipe 28 by the cleaning liquid supply pump 27. At this time, the cleaning liquid is discharged from the cleaning liquid supply pipe 28 to the cleaning liquid gutter 24. Is discharged directly toward the cleaning liquid supply hole 32,
The outflow from the cleaning liquid supply hole 32 near the discharge location becomes severe, and the outflow becomes weaker as the distance from the discharge location increases. In this state, it cannot be uniformly dropped and supplied to the upper part of the filter 11. In order to avoid this state and make it possible to uniformly drop and supply the cleaning liquid from any of the cleaning liquid supply holes, the cleaning liquid supplied from the cleaning liquid supply hole should not be forced to directly reach the cleaning liquid supply hole. It is conceivable to take a distance and arrange a pressure distribution plate or the like there, or increase the depth of the cleaning liquid gutter to reduce the diameter of the cleaning liquid supply hole, or adjust the flow rate from each cleaning liquid supply hole, etc. However, the measures described above are very difficult due to restrictions on the height dimension and depth of the range hood.

[0033]

According to the first aspect of the present invention, the cleaning liquid in the cleaning liquid gutter 24 is drained by the cylindrical draining portion 33 to stabilize the flow, and the flow is guided to allow the cleaning liquid to be supplied from the cleaning liquid supply holes 32 to the filter 11. Drops are supplied correctly as a single stream toward the upper edge.

As a result, the cleaning liquid is uniformly dropped and supplied to the upper edge of the filter 11 and flows down uniformly and stably over the entire surface of the filter 11, so that the entire surface of the filter 11 can be uniformly cleaned.

According to the second aspect of the present invention, the cleaning liquid supplied into the cleaning liquid gutter 24 flows into the cleaning liquid supply hole 32 through the fluid flow resistor 34. The turbulent pressure of the cleaning liquid intensively supplied at one location in the direction becomes uniform by the fluid flow resistor 34, and a stable cleaning liquid pressure is applied to each cleaning liquid supply hole 32 to uniformly supply the cleaning liquid.

Thus, for example, even when the cleaning liquid is supplied to the cleaning liquid gutter 24 by one cleaning liquid supply pipe, the cleaning liquid is uniformly dropped and supplied to the upper edge portion of the filter 11 and uniformly and stably flows down the entire surface of the filter 11. Therefore, the entire surface of the filter 11 can be uniformly cleaned.

According to the third aspect of the present invention, since the cleaning liquid flowing down along the filter 11 is supplied again to the cleaning liquid gutter 24, the cleaning liquid can be circulated and reused.

[Brief description of the drawings]

FIG. 1 is a sectional view of a range hood showing an embodiment of the present invention.

FIG. 2 is a plan view of a cleaning liquid gutter.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a cross-sectional view showing another embodiment of the cleaning liquid gutter.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Hood body, 11 ... Filter, 12 ... Suction part, 13
... discharge unit, 16 ... blower, 20 ... washing liquid receiving tray, 22 ... washing liquid tank, 24 ... washing liquid gutter, 26 ... washing liquid supply pump, 3
Reference numeral 2 denotes a cleaning liquid supply hole, 33 denotes a cylindrical drainage part, and 34 denotes a fluid flow resistor.

Claims (3)

[Claims] 1. The interior of the hood body 1 is divided into a suction part 12 and a discharge part 13 by a filter 11, and air in the discharge part 13 is sucked and discharged by a blower 16 so that the air in the suction part 12 A washing hood 24 is attached along the longitudinal direction of the upper edge of the filter 11 in a range hood that is drawn into the discharge portion 13 through the suction portion 13, and a cylindrical drainage portion 33 is provided at the bottom of the washing liquid gutter 24. A range hood filter cleaning device in which a plurality of cleaning liquid supply holes 32 are formed at intervals along the longitudinal direction of the filter 11 so as to supply the cleaning liquid to the cleaning liquid gutter 24. 2. The filter cleaning device for a range hood according to claim 1, wherein a fluid flow resistor is provided at the bottom of the cleaning liquid gutter. 3. A cleaning liquid receiving tray 20 is provided at a lower edge of the filter 11, and a cleaning liquid tank 2 is provided below the cleaning liquid receiving tray 20.
2. A cleaning liquid flowing along the filter 11 is provided in the cleaning liquid tank 22, and the cleaning liquid in the cleaning liquid tank 22 is supplied to the cleaning liquid gutter 24 by a cleaning liquid supply pump 27.
Or the filter cleaning device for a range hood according to 2.