JP2002286268A - Range hood - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a range hood of good appearance by preventing the inside of the hood and filters from being seen when the range is not used. SOLUTION: The hood 1 consists of a smoke suction part 1a having an opening 5 at the lower surface thereof, and a body 1b. The smoke suction part 1a is fixed with a filter 2 and a blower 3. A cover 4 is rotatably attached to the body 1b so that it can be moved up and down for closing the opening 5 being horizontally positioned and for opening the opening 5 being vertically positioned. The cover 4 is rotated up and down by an electric motor 33, by which the opening 5 is closed by the cover 4 when the range is not used. Thus the inside of the smoke suction part 1a (inside of the hood) and the filter 2 are prevented from being seen to provide a good appearance to the range hood.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided with a range hood for sucking gas such as steam or combustion gas generated during cooking together with air and discharging the gas to the outside, and is provided with a device for mainly cleaning the inside of the hood and the inside of the hood such as a filter. About range hood.

[0002]

2. Description of the Related Art As an example of a range hood, an air blower and a filter are attached to a hood for collecting gas generated during cooking, and the air generated during cooking is sucked together with air by driving the blower. There is known a device that captures oil or the like in a gas that has been captured by a filter to produce air with a low oil content or the like, and discharges the air to the outside through a discharge duct or the like. Also, a centrifugal force type range hood having no filter is known.

[0003]

Generally, the range hood is installed above the range. Also,
The hood of the range hood is opened substantially entirely on the lower surface in order to efficiently collect gas generated during cooking, and when looking up at the range hood, the inside of the hood and the inside of the hood such as a filter can be seen from the opening. Oil and the like in the gas generated at the time of cooking sucked adhere to the inside of the hood.

[0004] As described above, the conventional range hood has a poor appearance because the inside of the hood to which oil or the like has adhered can be seen by a person who cooks in the range. In particular, in the case of a room where there is no partition between the room to cook and the room to eat, the inside of the above-mentioned unsightly looking food can be seen even when eating.
Not preferred.

Accordingly, an object of the present invention is to solve the above-mentioned problem and to provide a range hood in which the inside of the hood is not visible when the range hood is not used.

[0006]

According to a first aspect of the present invention, there is provided a hood 1 having an opening 5 on a lower surface, a blower 3 for taking in gas generated during cooking together with air from the opening 5 and discharging the gas to the outside. A cover 4 for opening and closing the opening 5 of the hood 1 is provided. The cover 4 moves between a closed position for closing the opening 5 of the hood 1 and an open position for opening the opening 5. It is a range hood characterized by.

[0007] The second invention is a range hood in which the cover body 4 is in a vertical posture continuous with the rear edge of the opening 5 of the hood 1 when the cover body 4 is in the open position in the first invention. .

According to a third aspect of the present invention, in the first or second aspect, the cover body 4 is moved to a closed position and an open position by a drive unit 32, and the drive unit 32 and the blower 3 are synchronously driven and controlled. This is a range hood in which the cover 4 moves to the open position when the range hood is used, and moves to the closed position when the range hood is not used.

According to a fourth aspect of the present invention, in the third aspect, the driving device 32 comprises an electric motor 33 for moving the cover body 4 to a closed position and an open position, and a maximum force for moving the cover body 4 by the electric motor 33. Torque limiting mechanism 37 for limiting the value
It is a range hood equipped with.

A fifth aspect of the present invention is the range hood according to any one of the first to fourth aspects, further comprising a cleaning device for spraying a cleaning liquid into the hood such as the inner surface of the hood 1 for cleaning.

According to a sixth aspect of the present invention, in the fifth aspect, the cleaning device comprises a cleaning liquid spraying section 6 for spraying the cleaning liquid into the hood.
And a cleaning liquid supply unit 7 for pressure-feeding the cleaning liquid to the cleaning liquid injection unit 6. The cleaning liquid supply unit 7 includes a cleaning liquid tank 54.
A water supply means 56 for supplying tap water to the cleaning liquid tank 54; a heater 58 for heating the cleaning liquid in the cleaning liquid tank 54 to make it hot water; The cleaning hood blown into the hood is a range hood that is collected in the cleaning liquid tank 54 along the cover 4 at the closed position.

A seventh aspect of the present invention is the range hood according to the sixth aspect of the present invention, further comprising a drainage means 57 for draining the cleaning liquid in the cleaning liquid tank 54 to a sewer pipe or a sink.

[0013]

According to the first aspect, the opening 5 of the hood 1 is opened by moving the cover 4 to the open position.
By driving the blower 3, gas generated during cooking can be discharged to the outside. Since the opening 5 of the hood 1 is closed by moving the cover body 4 to the closed position, the inside of the hood such as the inner surface of the hood 1 cannot be seen. Therefore, since the inside of the hood 1 in an unsightly state where oil or the like adheres cannot be seen, the appearance is good. Moreover, the hood 1 and the cover body 4 are integrated and have a clean appearance, and there is a sense of cleanliness.

According to the second aspect, when the cover body 4 is in the open position, the cover body 4 has a function as a guide for the combustion gas and the updraft, so that the gas generated during cooking can be efficiently collected. Thus, a smooth rise of the combustion gas can be assisted.

According to the third aspect of the present invention, when the range hood is used, the cover body 4 is in the open position, and when not in use, the cover body 4 is in the closed position. Moving operation is unnecessary.

According to the fourth invention, when the cover body 4 is moved to the closed position and the open position, a human hand touches the cover body 4 intentionally or accidentally or when the cooker is placed in the range. If the moving force of the cover body 4 exceeds the maximum value due to the interference of the cover body 4 and the movement of the cover body 4 being hindered, the rotation of the electric motor 33 prevents the cover body 4 from moving. Therefore, while ensuring human safety,
The drive device 32 and the cover body 4 can be prevented from being damaged.

According to the fifth aspect of the present invention, the cleaning liquid can be sprayed into the hood with the cover body 4 in the closed position to clean the adhered oil and the like. In addition, the sprayed cleaning liquid is prevented from being scattered around from the opening 5 by the cover body 4.

According to the sixth aspect, tap water can be used as a cleaning liquid. Since the cleaning liquid is sprayed as warm water, it is possible to clean oil and the like adhering to the inside of the hood without mixing a detergent into the cleaning liquid. The cleaning liquid in the cleaning liquid tank 54 can be circulated and used.

According to the seventh aspect, the dirty cleaning liquid in the cleaning liquid tank 54 can be drained and fresh tap water can be supplied, so that the dirty cleaning liquid can be replaced.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a hood 1 for collecting gas generated during cooking, a filter 2 removably mounted in the hood 1 for capturing oil in the gas, A blower 3 sucks gas generated during cooking from the opening on the lower surface of the hood 1 together with air into the hood 1 and discharges the gas through the filter 2 to the outside, and a cover 4 for opening and closing the opening on the lower surface of the hood 1. The food is forming. In this embodiment, the cover 4 rotates up and down with respect to the hood 1 to open and close the opening, and the hood 1 and the cover 4 have an appearance like a bivalve. The hood 1 is mounted on a wall A of the kitchen above a range (not shown).

The hood 1 is formed of a smoke absorbing section 1a and a main body section 1b. The main body 1b is mounted on the wall A, and the smoke absorbing section 1a is mounted on the opposite side of the main body 1b from the wall A. The smoke absorbing portion 1a has a shape in which substantially the entire lower surface is opened and a filter 2 is mounted inside, and the opening 5 of the smoke absorbing portion 1a forms the opening of the hood 1 described above. Oil and the like in the gas generated during cooking adhere to the inner surface of the smoke absorption section 1a and the filter 2, and these are inside the hood of the hood 1.

The blower 3 has a shape in which a fan 3b and an electric motor 3c are provided on a casing 3a. By rotating the fan 3b with the electric motor 3c, gas generated during cooking is sucked into the smoke absorbing section 1a together with air, and a filter is provided. 2
Through the duct (not shown). The casing 3a is attached to the smoke absorbing section 1a.

As shown in FIG. 1, the cover body 4 is in an open position for opening the opening 5 of the smoke absorbing section 1a, for example, the opening 5
2 and a closed position for closing the opening 5 of the smoke absorbing section 1a, for example, a substantially horizontal lateral position, as shown in FIG. It is. The cover body 4 may be slid in a horizontal position (closed position) and a vertical position (open position) instead of vertically rotating. The cover body 4 is rotated up and down by an electric motor as described later, but may be rotated manually. Further, the cover body 4 may be divided into a plurality of cover bodies instead of being integrated, and the opening 5 of the smoke absorbing section 1a may be closed when each cover body is in the closed position. For example, each is vertically rotatably attached to the lower part of the periphery of the opening 5 of the smoke absorbing section 1a.

When the range hood is not used (when not in use)
In FIG. 2, the cover 4 is set to the horizontal position (closed position) as shown in FIG. 2, and the opening 5 (opening of the hood) of the smoke absorbing section 1a is closed. In this state, the hood 1 and the cover body 4 have the appearance of a closed bivalve. As a result, the inner surface of the smoke absorbing section 1 and the filter 2 (inside the hood) to which the oil content in the gas generated during cooking adheres cannot be seen. Moreover, the smoke absorbing section 1a
And the cover body 4 are integrated, and the appearance is neat and clean.

When the range hood is used (when used), the cover 4 is set to the vertical position (open position) as shown in FIG. 1 to open the opening 5 of the smoke absorbing section 1a, and the cover 4 is attached to the wall. Approach A. Thereby, the gas generated during cooking by driving the blower 3 can be collected and discharged to the outside. In addition, since the cover body 4 has a function as a guide for the combustion gas and the rising air flow, the gas generated during cooking can be efficiently collected, and the smooth rise of the combustion gas is assisted.

The smoke absorbing section 1a is provided with a cleaning liquid spraying section 6, whereby the cleaning liquid is sprayed onto the filter 2 and the inner surface (inside the hood) of the smoke absorbing section 1a to wash the attached oil and the like. The cleaning liquid supply section 7 is provided in the main body 1b, whereby the cleaning liquid is pumped to the cleaning liquid injection section 6 and the cleaning liquid sprayed on the inner surfaces of the filter 2 and the smoke absorption section 1a is collected and circulated several times. After washing, drain outside. The cleaning liquid injection unit 6 and the cleaning liquid supply unit 7 form a cleaning device inside the hood.

When a large amount of oil or the like adheres to the inner surface (inside of the hood) of the filter 2 and the smoke absorbing section 1a due to the long-term use of the range hood, etc.
The inside of the above-mentioned hood is cleaned at a predetermined time during the day or optionally as follows. As shown in FIG. 2, the cover body 4 is set to the horizontal position, and the opening 5 of the smoke absorbing section 1 a is closed. The cleaning liquid is fed under pressure by the cleaning liquid supply unit 7 and is sprayed from the cleaning liquid injection unit 6 into the hood for cleaning. As described above, even when the cleaning liquid is sprayed into the hood for cleaning, the cleaning liquid is scattered from the opening 5 around the smoke absorbing section 1a because the opening 5 of the smoke absorbing section 1a is closed by the cover body 4. Nothing. In this embodiment, as will be described later, the escutcheon 13 is provided, and the labyrinth-like minute gap a is provided between the opening 5 of the smoke absorbing section 1a and the cover body 4, so that air can be sucked from the minute gap a. ,
At the time of cleaning, the cleaning liquid does not leak from the minute gap a.

Next, the specific shape of each part will be described. Smoke absorption section 1
a is a top plate 10 and a peripheral plate 11 as shown in FIGS.
, The lower edge 1 of the peripheral plate 11
1a is bent inward. The lower end surface (the lower surface of the smoke absorbing portion 1a) of the peripheral surface plate 11 is inclined obliquely higher at the front portion than at the rear portion with respect to the horizontal. A suction opening 12 is formed in the upper surface plate 10, and a filter 2 is detachably attached to a lower surface of a peripheral edge of the suction opening 12. Therefore, the filter 2 can be attached and removed from the opening 5 by opening the opening 5 with the cover body 4 in the vertical position.

An escutcheon 13 is attached to the front surface of the peripheral plate 11 and to the lower part of the left and right side surfaces. The escutcheon 13 is, as shown in FIG.
4 and a pair of mounting projections 15 integrally provided near the upper part of the vertical portion 14 to form a recess 16, and the pair of mounting projections 15 are mounted on the peripheral surface plate 11 with screws 17. The wiring space 18 continuous in the longitudinal direction is formed. In this wiring space 18, wires and the like for connecting an operation panel 70 described later and each device can be collectively wired. Therefore, the appearance is good without the wires and the like being exposed to the outside. Further, as described above, when the inner surface of the smoke absorbing section 1a and the filter 2 are cleaned with the cleaning liquid, the cleaning liquid is not sprayed on the electric wires or the like.

Although the escutcheon 13 attached to the front and the escutcheon 13 attached to the side face are cut off at 45 degrees and butt-connected, they may be connected using a corner joint.

The vertical portion 14 and the lower edge 11a of the peripheral plate 11
And a downward concave portion 19 is formed between them. The downward concave portion 19 is continuous with the front surface and the left and right side surfaces, and when the cover body 4 is in the horizontal position, a rising piece 27 described later enters the concave portion 19.

As shown in FIGS. 1, 3 and 5, the main body 1b comprises a box body 24 having a front surface opened by an upper plate 20, left and right side plates 21, a lower plate 22, and a rear plate 23. Body 24
Has a lid 25 detachably attached to the front portion of the cover. The main body 1b is attached to the rear surface of the smoke absorbing section 1a,
And the upper surface plate 10 of the smoke absorbing section 1a are at the same height. The smoke absorbing section 1a and the main body section 1b may be integrated.

The cover body 4 has a rectangular plate-like substrate 26,
It has a generally dish-like shape with a rising piece 27 provided integrally at each edge thereof. For example, it is formed by bending a single plate. A mounting projection 28 is provided on the rear rising piece 27. A rear portion of the cover 4 on the substrate 26 is recessed so that the left and right central portions thereof are lower, and a return pipe 29 is attached to the left and right central portions of the recess.

As shown in FIG. 5, a drive shaft 30 is rotatably mounted on a bearing member 31 across the left and right side plates 21 of the main body 1b. Attachment protrusion 2 of cover 4
8 passes through a notch (not shown) formed in the lid 25,
The mounting projection 28 is fixedly attached to the drive shaft 30.

Thus, by rotating the drive shaft 30 forward and backward, the cover body 4 is turned up and down to be in a horizontal position and a vertical position. When the cover body 4 is turned to the horizontal position as shown in FIG.
Get inside. As a result, each rising piece 27 is covered with the escutche 13, and the lower part (the lower edge of the hood) of the peripheral plate 11 of the smoke absorbing section 1 a and the rising piece 27 of the cover body 4 (the upper edge of the cover body 4) are escutched 13. As a result, the smoke absorbing portion 1a and the cover body 4 have a clean and attractive appearance like the above-mentioned bivalve shell.

As shown in FIG. 2 and FIG. 4, the rising piece 27 (upper edge) of the cover 4 is attached to the peripheral surface plate 11 of the smoke absorbing section 1a.
And the rising piece 27 overlaps the outside of the lower edge 11a.
And a labyrinth-like minute gap a is formed between the inner side surface of the peripheral plate 11 and the outer side surface of the lower edge 11a of the peripheral surface plate 11. This minute gap a
Is not limited to a labyrinth. The small gap a serves as an air passage during the drying operation as described later. As described above, when cleaning the inner surface of the smoke absorbing portion 1a and the filter 2 with the cleaning liquid, the cleaning liquid does not leak to the outside from the minute gap a.

The drive shaft 30 is rotated forward and reverse by a drive device 32. The drive device 32 rotates the drive shaft 30 forward and reverse by an electric motor, and limits a maximum rotational force (torque) transmitted to the drive shaft 30, that is, a force for rotating the cover body 4 up and down. More specifically, as shown in FIGS. 5 and 6, the driving device 32 includes an electric motor 33 and a worm 3 that is rotationally driven via a speed reducer 34 provided on the output side thereof.
5 and the worm wheel 3 meshed with the worm 35
6 and a rotational force limiting mechanism 37 provided between the worm wheel 36 and the drive shaft 30. The worm wheel 36 is rotatably supported by the drive shaft 30 as shown in FIG. 7, and is held by a collar (stopper) 38 so as not to move in one axial direction. A ball plunger 40 is provided on a joint collar 39 attached to the drive shaft 30 so as not to rotate.
0 is fitted and urged by a spring 40a into a hole 41 formed in the boss portion 36a of the worm wheel 36 to form a rotational force limiting mechanism 37.

As described above, when the rotational force (torque) transmitted from the worm wheel 36 to the drive shaft 30 is larger than the set value, the ball plunger 40 is
And the worm wheel 36 idles with respect to the drive shaft 30, and no rotational force is transmitted to the drive shaft 30. That is, the torque limiting mechanism 37 limits the maximum value of the torque transmitted from the motor 33 to the drive shaft 30. When the worm wheel 36 rotates by 180 degrees, the next hole 41 faces the ball plunger 40, and the ball plunger 40 fits into the hole 41, so that the cover 4 does not rotate downward by its own weight.

Therefore, during the opening and closing operation by driving the electric motor 33 to rotate the cover body 4 up and down, a human hand touches the cover body 4 intentionally or accidentally or interferes with cooking utensils placed in the range. In this case, when the opening / closing is to be inhibited, the rotational force is not transmitted from the worm wheel 36 to the drive shaft 30, and the cover 4 is stopped as it is. Therefore, it is possible to secure human safety and prevent the drive device 32 and the cover body 4 from being damaged.

As will be described later, the drive device 32 (electric motor 33) is driven and controlled in synchronization with the electric motor 3c of the blower 3. When the range hood is used, the cover 4 is in a vertical position (open position), and is not used. Sometimes it is in a horizontal position (closed position).

As shown in FIG. 3, the cleaning liquid spraying section 6 connects four pipes 50 in a rectangular shape with an L-shaped pipe joint 51, and connects each pipe 50 with an inward nozzle 52 and an outward nozzle 52. 53 are provided. The cleaning liquid spray unit 6 is attached to the back surface of the upper plate 10 of the smoke suction unit 1a so that the four pipes 50 surround the filter 2. The inward nozzle 52 faces the filter 2,
A cleaning solution is sprayed on the filter 2. The outward nozzle 53 faces the inner surface of the smoke absorbing section 1a, and sprays the cleaning liquid on the inner surface.

The jetting angle and number of the cleaning liquids of the nozzles 52 and 53 are set so that the cleaning can be performed most efficiently. For example, the inward nozzle 52 is substantially horizontal, and the outward nozzle 5
3 is upward, horizontal, and downward.

The cleaning liquid spraying section 6 is not limited to the above-described one, and a plurality of nozzles may be independently mounted to face the inner surface of the smoke absorbing section 1a and the filter 2, respectively. Also,
A plurality of nozzles may be provided on a rotatable nozzle body, and the nozzle body may be rotated by a cleaning liquid ejected from some nozzles.

As shown in FIG. 5, the cleaning liquid supply unit 7
A cleaning liquid tank 54, a pressure pump 55 for pumping the cleaning liquid in the cleaning liquid tank 54 to the pipe 50, a water supply means 56 for supplying the cleaning liquid to the cleaning liquid tank 54, and a drainage means for draining the cleaning liquid in the cleaning liquid tank 54 to the outside. 5
7. A heater 58 for heating the cleaning liquid in the cleaning liquid tank 54 is provided. The pump 55 is driven by an electric motor 55a.

The water supply means 56 includes a water supply pipe 59 connected to a water supply pipe (not shown) and a water supply pipe 59.
, For example, a water supply electromagnetic on-off valve 60. The water supply pipe 59 may be provided with a filter and a water supply tap. This filter collects corrosion-causing substances such as disinfectants and disinfectants in tap water that may cause early corrosion of the inside of the hood. The water supply main tap is closed when the range hood is not used for a long period of time to prevent tap water from leaking from the water supply electromagnetic on-off valve 60 and the like, and is normally opened.

The drainage means 57 includes a drainage pipe 61 connected to a sewer pipe or a sink (not shown), and an on-off valve provided on the drainage pipe 61, for example, an electromagnetic on-off valve 62 for drainage. The electromagnetic on-off valve 62 for drainage is normally closed, and is opened at the end of one washing operation or at the end of a plurality of washing operations (that is, when the washing liquid in the washing liquid tank 54 becomes dirty), or optionally for a predetermined time. Then, the dirty cleaning liquid in the cleaning liquid tank 54 is drained to a sewer pipe. The drain pipe 61
A drainage plug may be provided at the bottom.

The heater 58 generates heat when energized, and heats the cleaning liquid in the cleaning liquid tank 54 to generate hot water.
For example, warm water of 50 to 70 degrees is used. Specifically, the temperature of the cleaning liquid in the cleaning liquid tank 54 is detected by a temperature sensor, and the detected temperature is applied to the heater 58 to control the temperature of the cleaning liquid from 50 degrees to 50 degrees.
Use 70 degree warm water. By connecting the water supply pipe 59 to a hot water outlet of a water heater installed in a kitchen or the like, hot water can be supplied to the cleaning liquid tank 54. However, if the cleaning liquid in the cleaning liquid tank 54 is used repeatedly, Is lowered, and in that case, the heater 58 is used to heat.

As shown in FIGS. 2 and 3, the cover 4
When the cover body 4 is set in the horizontal position, the return pipe 29 protrudes into the cleaning liquid tank 54 through the notch 25a of the lid 25, and collects the cleaning liquid flowing down to the cover body 4 into the cleaning liquid tank 54.

As shown in FIGS. 1 and 3, an operation panel 70 is mounted on the front surface of the smoke absorbing portion 1a (the front surface of the hood 1), for example, on the escutcheon 13 mounted on the front surface of the peripheral plate 11. As shown in FIG. 8, the operation panel 70 is provided with an operation unit 71 for a range hood. The range hood operation unit 71 includes a switch 72, a weak operation switch 73, a medium operation switch 74, a strong operation switch 75, a timer switch 76, a lighting switch 77, and the like. The configuration of this switch is an example, and there may be a difference in configuration depending on the function. The operation panel 70 includes a cleaning selector 78, a cleaning start button 79, a first timer 8
0, a second timer 81 and a third timer 82 are provided. These operation signals and the like are input to the controller 83. The temperature detected by the temperature sensor 84 for detecting the temperature of the cleaning liquid in the cleaning liquid tank 54 is input to the controller 83.

The controller 83 drives the electric motor 3c of the blower 3, the electric motor 33 of the driving device 32, and the electric motor 55a of the pressure pump 55 based on the input signals and the like, and the electromagnetic opening / closing valve 60 for water supply, Solenoid on-off valve 62
The solenoids 60a and 62a and the heater 58 are energized.
The arrangement and arrangement of the operation panel 70 and the range hood operation unit 71 may be changed depending on the allowable space.

The cleaning selector 78 is located at the automatic cleaning position 78.
The position is manually switched to the cleaning position 78b and the cleaning stop position 78c as needed. The first timer 80 sets a cleaning start time once a day. This cleaning start time is one day (24 hours)
The time when the frequency of using the inner range hood is the least, for example, 23:30. The second timer 81 sets a cleaning time per one time. The washing time per time is set according to the content of cooking in the range, for example, whether the amount of oil used is large or small. The third timer 82
Sets the drying operation time described later.

Although the controller 83 is built in the operation panel 70, it may be provided in the main body 1b. The electric wire 85 for transmitting the signal of the controller 83 to the electric motor or the like is connected to the wiring space 1 of the escutcheon 13 described above.
8 and connected to the respective devices in the main body 1b through the holes (not shown) of the side plate 21 from the wiring space 18 of the escutcheon 13 on the left and right sides shown in FIG.
It is connected to the electric motor 3c of the blower 3. This electric wire 85
Is not limited to this.

Next, the operation of the range hood will be described.
By operating any of the weak operation switch 73, the medium operation switch 74, and the strong operation switch 75, the controller 83 is operated.
The range hood operation signal is input to Controller 8
Reference numeral 3 outputs a signal for driving the electric motor 33 of the driving device 32, drives the electric motor 33, and turns the cover body 4 downward so as to be in the vertical position to open the opening 5 of the smoke absorbing section 1a. After a predetermined time has passed since a detection signal indicating that the cover body 4 is in the vertical position by a limit switch or a drive signal for the electric motor 33 has been output, the electric motor 3
Stop 3. At the same time, or in response to a detection signal indicating that the cover body 4 is in the vertical position by a limit switch or the like, the controller 83 causes the electric motor 3c of the blower 3 to operate.
By driving the electric motor 3c to operate the blower 3, the gas generated during cooking is collected and discharged to the outside as described above.

When a range hood stop signal by operating the off switch 72 or a time-up signal when the timer switch 76 is operated is input to the controller 83, the controller 83 outputs a signal for stopping the electric motor 3c of the blower 3. Output and blower 3 is stopped. At the same time, the controller 83 outputs a signal for driving the electric motor 33 of the driving device 32, and the electric motor 33 is driven to rotate in the opposite direction to rotate the cover body 4 upward to take a sideways posture. The opening 5 of the part 1a is closed. The electric motor 33 is stopped by the above-mentioned detection signal of the limit switch, and the cover body 4 is held in the horizontal posture.

As described above, when the operation of the range hood is started, the cover body 4 automatically rotates to the vertical position, and when the operation of the range hood is completed, the cover body 4 automatically assumes the horizontal position. The operation of turning the cover body 4 up and down is unnecessary, and the cover body 4 does not malfunction.

Next, the cleaning operation will be described. Cleaning selector 7
When 8 is the automatic cleaning position 78a. When the cleaning start time set by the first timer 80 comes, it is confirmed that the cover body 4 is in the horizontal posture, and the cleaning operation is started. When the cover body 4 is not in the horizontal posture, the electric motor 33 of the driving device 32 is driven to bring the cover body 4 into the horizontal posture as described above. At this time, it is assumed that a predetermined amount of the cleaning liquid is stored in the cleaning liquid tank 54 and is heated by the heater 58 as hot water of a predetermined temperature.

The controller 83 outputs a signal for driving the electric motor 55a of the pump 55,
Drive. The cleaning liquid in the cleaning liquid tank 54 is pressure-fed by the pressure pump 55, and the cleaning liquid is sprayed from the nozzles 52 and 53 onto the inner surface of the filter 2 and the smoke absorbing portion 1a, thereby cleaning the attached oil and the like. At this time, since the cleaning liquid is warm water at a predetermined temperature, it is possible to sufficiently clean the oil and the like adhering to the filter 2 and the inner surface of the smoke absorbing section 1a without mixing a detergent into the cleaning liquid.

The washed washing liquid flows down to the cover 4, flows along the cover 4, flows down from the return pipe 29 into the washing liquid tank 54, and is collected. in this way,
Since the washed cleaning liquid is collected in the cleaning liquid tank 54, the cleaning liquid can be circulated and reused for cleaning.

After cleaning for a preset time, the electric motor 55a of the pressure feed pump 55 is stopped, and the pressure of the cleaning liquid is stopped to finish the cleaning. After the completion of the washing, air is naturally dried for a certain period of time using the residual heat of the hot water. After this, the electric motor 3c of the blower 3 is driven at a low speed (corresponding to the weak operation of the range hood) and the time set by the third timer 82 is set.
For example, a drying operation is performed for 10 minutes. As a result, air is sucked into the smoke-absorbing section 1a from the aforementioned minute gap a, the cleaning liquid attached to the inner surface of the smoke-absorbing section 1a and the filter 2 is discharged to the outside, and the inner surface of the smoke-absorbing section 1a and the filter 2 are dried. Becomes

As described above, the minute gap a is formed between the cover body 4 and the smoke absorbing portion 1a in a state where the opening 5 of the smoke absorbing portion 1a is closed with the cover body 4 in the horizontal position.
The drying operation can be performed without rotating the cover body 4 up and down.

If the cleaning liquid is prevented from leaking by pressing the cover body 4 against the lower edge portion 11a of the peripheral surface plate 11 of the smoke absorbing section 1a via a sealing material, the cover body 4 is not used during the above-mentioned drying operation. The cover body 4 and the peripheral plate 1
A gap may be formed between the first lower edge portion 11a and the lower edge portion 11a to allow air to flow.

Thus, a series of automatic cleaning operations is completed. This automatic cleaning operation may be performed plural times in one day.

When the cleaning selector 78 is set to the cleaning position 78b as needed. By operating the cleaning start button 79, the cleaning is performed for the time set by the second timer 81 in the same manner as described above, and then the range hood is dried for the time set by the third timer 82. As described above, by setting the cleaning selector 78 to the cleaning position 78b as needed, the smoke absorbing section 1 can be set at an arbitrary timing.
The inner surface of a and the filter 2 can be washed.

By performing the cleaning operation of the inside of the hood as described above, the cleaning liquid in the cleaning liquid tank 54 may become dirty or the amount thereof may be insufficient. In this case, the cleaning liquid in the cleaning liquid tank 54 is exchanged as follows. When the controller 83 detects the end of one cleaning operation or the end of a plurality of cleaning operations, or when a cleaning liquid exchange signal is input to the controller 83 by a switch or the like. Controller 8
3 energizes the solenoid 62a of the drainage electromagnetic on-off valve 62 to bring it to the open position. Thus, the dirty cleaning liquid in the cleaning liquid tank 54 is drained to the sewer pipe or the sink by the drain pipe 61. Completion of this drainage, for example, solenoid 62a
When a predetermined time has passed since the power was supplied to the
When the washing liquid no signal of the water level sensor provided at the lower portion of the sensor 4 is input, the controller 83 stops the power supply to the solenoid 62a and closes the drain electromagnetic on-off valve 62. Thereafter, the solenoid 60a of the water supply solenoid valve 60 is energized to the open position. As a result, tap water is supplied into the cleaning liquid tank 54 from the water pipe as the cleaning liquid. When a predetermined amount of cleaning liquid has accumulated in the cleaning liquid tank 54, for example, when a predetermined time has elapsed after the solenoid 60a has been energized, or when a cleaning liquid detection signal of a water level sensor provided above the cleaning liquid tank 54 is input, the controller 83 Turns off the power supply to the solenoid 60a and closes the water supply electromagnetic on-off valve 60.

When the cleaning liquid is exchanged as described above, the heater 58 is energized to heat the cleaning liquid in the cleaning liquid tank 54, and when it is detected that the predetermined temperature has been reached by the temperature sensor 84, the heater 58 Turn off the power. When the temperature of the cleaning liquid in the cleaning liquid tank 54 decreases with the passage of time, the heater 58 is energized and heated. This operation is repeated to maintain the temperature of the cleaning liquid in the cleaning liquid tank 54 at a predetermined temperature.

Although the range hood having the filter 2 has been described in the above embodiment, the present invention can be applied to a centrifugal force type range hood having no filter. For example, by attaching the cover 4 and the cleaning device, the same operation and effect as described above can be obtained.

[0067]

According to the first aspect of the present invention, since the opening 5 of the hood 1 is opened by moving the cover body 4 to the open position, the gas generated during cooking by driving the blower 3 is removed. Can be discharged outside. Since the opening 5 of the hood 1 is closed by moving the cover body 4 to the closed position, the inside of the hood such as the inner surface of the hood 1 cannot be seen. Therefore, since the inside of the hood 1 in an unsightly state where oil or the like adheres cannot be seen, the appearance is good. Moreover, the hood 1 and the cover body 4 are integrated and have a clean appearance, and there is a sense of cleanliness.

According to the second aspect of the present invention, the cover 4
When the cover is in the open position, the cover body 4 functions as a guide for the combustion gas and the updraft, so that the gas generated during cooking can be efficiently collected, and the smooth rise of the combustion gas can be assisted. .

According to the third aspect of the present invention, the cover 4 is in the open position when the range hood is used, and is in the closed position when the range hood is not in use. The operation of moving 4 is unnecessary.

According to the fourth aspect of the present invention, the cover 4
Is moved to the closed position and the open position, the human body touches the cover body 4 intentionally or accidentally, or the cover body 4 interferes with cooking utensils placed in the range, and the cover body 4 moves. When the force for moving the cover body 4 exceeds the maximum value due to the hindrance, the cover body 4 does not move due to the rotational force of the electric motor 33. Therefore, it is possible to secure human safety and prevent the drive device 32 and the cover body 4 from being damaged.

According to the fifth aspect of the present invention, the cover 4
The cleaning liquid is sprayed into the interior of the hood with the closed position, so that the attached oil and the like can be cleaned. In addition, the sprayed cleaning liquid is prevented from being scattered around from the opening 5 by the cover body 4.

According to the invention of claim 6, tap water can be used as a cleaning liquid. Since the cleaning liquid is sprayed as warm water, it is possible to clean oil and the like adhering to the inside of the hood without mixing a detergent into the cleaning liquid. The cleaning liquid in the cleaning liquid tank 54 can be circulated and used.

According to the seventh aspect of the present invention, since the dirty cleaning liquid in the cleaning liquid tank 54 can be drained and fresh tap water can be supplied, the dirty cleaning liquid can be replaced.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a range hood with a cover body in an open position.

FIG. 2 is a longitudinal sectional view of the range hood in a state where a cover body is in a closed position.

FIG. 3 is a plan view of a hood.

FIG. 4 is an enlarged view of a portion A in FIG. 1;

FIG. 5 is a front view of a main body with a lid removed.

FIG. 6 is a sectional view taken along line BB of FIG. 5;

FIG. 7 is a sectional view of a driving device.

FIG. 8 is a control circuit diagram.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Hood, 1a ... Smoking part, 1b ... Body part, 2 ... Filter, 3 ... Blower, 3c ... Electric heater, 4 ... Cover body,
5 ... opening, 6 ... cleaning liquid spraying part, 7 ... cleaning liquid supply part, 1
3 ... escutcheon, 16 ... space for piping, 19 ... recess, 27 ... rising piece, 30 ... drive shaft, 32 ... drive device,
33 ... electric motor, 37 ... rotational force control mechanism, 50 ... pipe, 52 ... inner nozzle, 53 ... outer nozzle, 54 ...
Cleaning liquid tank, 55: pressure feed pump, 55a: electric motor, 56: water supply means, 57: drainage means, 58: heater,
70: operation panel, 83: controller.

Continuation of the front page F term (reference) 3B201 AA46 AA47 AB53 BB21 BB43 BB82 BB90 BB92 CC11 CD11 CD22 CD41 3L058 BK02 BK06 BK09 BK10

Claims (7)

[Claims] 1. A hood 1 having an opening 5 on a lower surface, a blower 3 for taking in gas generated during cooking together with air from the opening 5 and discharging the gas to the outside, and a cover for opening and closing the opening 5 of the hood 1. A range hood comprising a body 4, wherein the cover body 4 moves between a closed position for closing the opening 5 of the hood 1 and an open position for opening the opening 5. 2. The range hood according to claim 1, wherein when the cover body 4 is in the open position, the cover body 4 is in a vertical orientation that is continuous with the rear edge of the opening 5 of the hood 1. 3. The cover body 4 is moved to a closed position and an open position by a drive device 32, and the drive device 32 and the blower 3 are synchronously driven so that the cover body 4 is in the open position when the range hood is used. 3. The range hood according to claim 1, wherein the cover body moves to the closed position when the range hood is not used. The driving device includes an electric motor that moves the cover body to a closed position and an open position, and a rotational force limiting mechanism that limits a maximum value of the electric motor moving the cover body. The range hood according to claim 3, comprising: 5. A cleaning device for cleaning by spraying a cleaning liquid into a hood such as an inner surface of the hood 1.
The range hood according to any one of the preceding claims. 6. The cleaning device includes a cleaning liquid spraying unit 6 for spraying a cleaning liquid into the hood, and a cleaning liquid supply unit 7 for pumping the cleaning liquid to the cleaning liquid injection unit 6. The cleaning liquid supply unit 7 includes a cleaning liquid tank 54, Water supply means 56 for supplying tap water to the cleaning liquid tank 54, a heater 58 for heating the cleaning liquid in the cleaning liquid tank 54 to make it hot water, and a pressure pump for pumping the cleaning liquid in the cleaning liquid tank 54 to the cleaning liquid injection unit 6. The range hood according to claim 5, further comprising: a cleaning liquid having a cleaning liquid sprayed into the hood and collected in the cleaning liquid tank along the cover body at the closed position. 7. A draining means 57 for draining the cleaning liquid in the cleaning liquid tank 54 to a sewer pipe or a sink.
The described range hood.