JPH10132350A - Filter cleaning apparatus for range hood - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically clean a filter after a fan is interrupted using an inexpensive cleaning liquid supply pump. SOLUTION: A cleaning liquid conduit 24 is provided over an upper edge left and right whole length of a filter 11, and a plurality of cleaning liquid supply holes 32 are formed in a bottom of the cleaning liquid conduit 24. The cleaning liquid is supplied to the cleaning liquid conduit 24 with a cleaning liquid supply pump 27 and is flowed along the filter 11 to clean adhering oil for cleaning of the filter 11, and an electric motor 26 is started to be driven after an ON signal for a push button of the fan 16 is inputted. Hereby, the filter 11 is automatically cleaned after the interruption of the air fan 16.

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 Unexamined Patent Publication No.
As disclosed in Japanese Patent Application Publication No. 0-42532, a plurality of baffle plates are attached to an intake air passage that connects 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 grease particles adhere to the baffle plate or the inner wall of the air passage to separate and remove grease. It is known that a pump is driven after the blower is stopped, and a cleaning liquid is sprayed from the cleaning liquid nozzle onto the baffle plate or the inner wall of the air passage to wash off attached oil and fat.

[0003] With this range hood, since the grease attached to the baffle plate or the inner wall of the air passage can be washed off with a cleaning liquid after the blower is stopped, 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, in order to spray the cleaning liquid over the entire surface of the filter using the cleaning nozzle as in a conventional range hood, a high-pressure cleaning liquid is pumped to the cleaning nozzle and sprayed over a wide range, or a plurality of cleaning nozzles are opposed to the filter. The installation requires an expensive pump that discharges a large amount of high-pressure cleaning liquid.

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, there is provided a range hood in which the inside of a hood body 1 is divided into a suction portion 12 and a discharge portion 13 by a filter 11 and air in the discharge portion 13 is discharged by a blower 16. A cleaning liquid gutter 11 is provided over the entire length of the upper edge of the filter 11 and a plurality of cleaning liquid supply holes 32 are formed at the bottom of the cleaning liquid gutter 11 at intervals in the left and right direction of the filter 11. A washing liquid receiving tray 20 is attached over the entire length of the right and left portions, and a washing liquid tank 22 is provided below an outlet 23 of the washing liquid receiving tray 20. The washing liquid in the washing liquid tank 22 is supplied by a washing liquid supply pump 27 driven by an electric motor 26. The range hood is configured to be supplied to a cleaning liquid gutter 24 and to drive the electric motor 26 for a predetermined time after the blower 16 is stopped. It is a Iruta cleaning device.

A second invention is a range hood in which the electric motor 26 is driven for a predetermined time set by a timer after the blower 16 of the first invention is stopped, and the timer can be set arbitrarily by a user. Filter cleaning device.

[0010]

According to the first invention, the cleaning liquid in the cleaning liquid gutter 24 falls from the cleaning liquid supply hole 32 to the upper edge of the filter 11, and the cleaning liquid flows down the filter 11 and adheres to the filter 11. The filter 11 is cleaned by washing the oils and fats.

As a result, since the cleaning liquid supply pump 27 only supplies the cleaning liquid into the cleaning liquid gutter 24, it is possible to use a pump having a low discharge pressure and a small discharge amount. It is.

Further, since the washing liquid after washing the filter 11 is received by the washing liquid receiving tray 20 and collected in the washing liquid tank 22,
The washing solution can be used repeatedly.

After the blower 16 stops, the electric motor 2
Since the drive of 6 starts the cleaning of the filter 11, the filter 11 can be automatically cleaned every time the blower 16 stops without the user of the range hood performing the filter cleaning operation.

According to the second aspect of the present invention, the user can arbitrarily set the time during which the electric motor 26 is driven, so that the filter 11 can be cleaned for a time corresponding to the type of cooking, and the filter 11 can be efficiently cleaned.

[0015]

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 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 having 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.

As described above, 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 washing liquid gutter 24 is attached to the rear top plate 6. The upper part of the filter 11 is attached to the cleaning liquid gutter 24 via a bracket 25. The washing liquid tank 2
The cleaning liquid in 2 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.

The filter 11 is mounted between a pair of side plates 5 facing each other as shown in FIG. 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 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. The front portion 30a of the bottom plate 30
A plurality of cleaning liquid supply holes 32 are formed at intervals in the left-right direction.

An operation panel 40 is attached to the front plate 7 of the front hood 3. The operation panel 40 includes an operation button 41 and a stop button 42 as shown in FIG. When the operation button 41 is turned on, an operation signal is input to the controller 43, and the controller 43 starts driving the electric motor 14 of the blower 16.

The operation panel 40 may be provided with normal buttons for controlling the operation of the range hood, for example, a high-speed operation button, a medium-speed operation button, and a low-speed operation button.

When the stop button 42 is turned on, a stop signal is input to the controller 43, and the controller 43
The electric motor 14 is stopped. The controller 44 starts driving the electric motor 26 of the cleaning liquid supply pump 27 after a lapse of the time set by the first timer 44 after the input of the stop signal, and when the predetermined time set by the second timer 45 e.g. 26 is stopped.

As described above, the cleaning liquid does not flow along the filter 11 when the fan 15 is rotating by inertia immediately after the operation of the blower 16 is stopped, so that the cleaning liquid is not sucked into the blower 16.

Since the time until the fan 15 rotating by inertia substantially stops is about 10 to 15 seconds, the time set by the first timer 44 is, for example, about 10 to 1
5 seconds.

Next, the operation will be described. When the stop button 42 is turned on while the blower 16 is being driven, the electric motor 14 of the blower 16 stops and the blower 16 stops. At this time,
The fan 15 rotates by inertia for about 10 to 15 seconds.

After the blower 16 stops, the first timer 4
When the time set in step 4 elapses, the fan 15 rotating by inertia stops, and the electric motor 26 starts driving. Thus, the cleaning liquid in the cleaning liquid tank 22 is supplied to the cleaning liquid gutter 24 through the cleaning liquid supply pipe 28 by the cleaning liquid supply pump 27.

The cleaning liquid in the cleaning liquid gutter 24 falls from each cleaning liquid supply hole 32 to the upper edge of the filter 11 and flows down along the filter 11 to clean the oil and fat attached to the filter 11.

The washing liquid flowing along the filter 11 falls into the washing liquid receiving tray 20 and is collected from the outlet 23 into the washing liquid tank 22.

When a predetermined time set by the second timer 45 has elapsed, the electric motor 26 stops, and the cleaning liquid supply pump 27 stops. As a result, the cleaning liquid is not supplied into the cleaning liquid tank 24, so that the cleaning of the filter 11 ends when the entire amount of the cleaning liquid in the cleaning liquid tank 24 drops.

The second timer 45 may be provided on the operation panel 40 as shown in FIG. 4 so that the user can set it arbitrarily.

In this way, the user can set the driving time of the electric motor 26 (the cleaning time of the filter 11) according to the type of cooking (the state of generation of oily smoke). For example, when the generation of oil smoke is small in general cooking, the setting time of the second timer 45 is set to be short, for example, 2 to 3 minutes.
Second timer 4 for cooking with a lot of oil smoke such as grilled fish
The setting time of 5 is long, for example, 5 minutes.

[0036]

According to the present invention, the cleaning liquid in the cleaning liquid gutter 24 falls from the cleaning liquid supply hole 32 to the upper edge of the filter 11 and the cleaning liquid flows down the filter 11 to thereby adhere to the filter 11. Wash the filter and clean the filter 11.

Thus, since the cleaning liquid supply pump 27 only supplies the cleaning liquid into the cleaning liquid gutter 24, it is possible to use a pump having a low discharge pressure and a small discharge amount. It is.

Further, since the washing liquid after washing the filter 11 is received by the washing liquid receiving tray 20 and collected in the washing liquid tank 22,
The washing solution can be used repeatedly.

After the blower 16 stops, the electric motor 2
Since the drive of 6 starts cleaning of the filter 11, the user of the range hood can automatically clean the filter 11 every time the blower 16 is stopped without performing the filter cleaning operation.

According to the second aspect of the present invention, the user can arbitrarily set the time during which the electric motor 26 is driven, so that the filter 11 can be cleaned for a time corresponding to the type of cooking, and the filter 11 can be efficiently cleaned.

[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 mounting portion.

FIG. 3 is a control circuit diagram.

FIG. 4 is a control circuit diagram showing a second embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Hood body, 11 ... Filter, 12 ... Suction part, 13
... discharge unit, 16 ... blower, 20 ... cleaning liquid receiving tray, 22 ... cleaning liquid tank, 23 ... discharge port, 24 ... cleaning liquid gutter, 26 ... electric motor, 27 ... cleaning liquid supply pump, 32 ... cleaning liquid supply hole.

Claims (2)

[Claims] 1. A range hood in which the inside of a hood body 1 is partitioned into a suction portion 12 and a discharge portion 13 by a filter 11, and air in the discharge portion 13 is discharged by a blower 16. And a cleaning liquid supply hole 3 is provided at the bottom of the cleaning liquid gutter 11.
A plurality of filters 2 are formed at intervals in the left-right direction of the filter 11, a cleaning liquid receiving tray 20 is attached over the entire left and right entire lower edge of the filter 11, and a cleaning liquid tank 22 is provided below an outlet 23 of the cleaning liquid receiving tray 20. The cleaning liquid in the cleaning liquid tank 22 is configured to be supplied to the cleaning liquid gutter 24 by a cleaning liquid supply pump 27 driven by an electric motor 26, and the electric motor 26 is driven for a predetermined time after the blower 16 is stopped. A filter cleaning device for a range hood. 2. The range hood filter cleaning device according to claim 1, wherein the electric motor 26 is driven for a predetermined time set by a timer after the blower 16 is stopped, and the timer can be arbitrarily set by a user. apparatus.