JP2002022230A - Range hood - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a range hood wherein even oil that is oxidized and hence becomes adhesive can be cleaned. SOLUTION: There are provided in a hood 2 a steam injection section 30, a feedwater pump 40, a steam generator 41, and a steam reservoir 42, and further provided a water tank 43 outside the hood 2. Water in the water tank 43 is fed to the steam generator 41 with the aid of the feedwater pump 40, and generated steam is reserved in the steam reservoir 42. The steam in the steam reservoir 42 is fed to the steam injection section 30 and is injected into the hood 2, whereby oxidized adhesive oil is softened into a fluid state.

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 sucking smoke, steam, odor, etc. generated during cooking and discharging the same to the outside. About.

[0002]

2. Description of the Related Art A range hood is installed above a range and sucks smoke, steam, odor, etc. (hereinafter referred to as oily smoke) generated during cooking and discharges it to the outside.

[0003] As an example of this range hood, a fan and a filter are attached to a hood for catching oily smoke, and the blower is driven to suck in the oily smoke. Air and
A device that discharges the air to the outside through a discharge duct or the like is known.

In the above-mentioned range hood, oil or the like adheres to the inner surface of the hood or the interior of the hood such as a filter, so that a portion in which oil is not easily adhered is painted or an oil adheres to the portion. Difficult to make painted steel plate,
Alternatively, measures such as minimizing the contact area with oil have been taken.

[0005] In the case of a range hood in which such a measure is taken, adhesion of oil is reduced, and cleaning of the attached oil is easy. However, even in the range hood in which the above-described measures are taken, if the number of days of leaving the attached oil reaches a month unit, the viscosity of the oil increases due to oxidation of the oil, and cleaning becomes difficult.

[0006] A range hood that solves this problem is disclosed in Japanese Patent Application Laid-Open No. 11-63611. Specifically, a cleaning liquid injection unit, a cleaning liquid pump, and a cleaning liquid tank are attached to the hood, and the cleaning liquid in the cleaning liquid tank is pumped to the cleaning liquid injection unit by the cleaning liquid pump. This is a range hood that cleans oil adhering to the spray.

[0007]

Since such a range hood sprays a cleaning liquid into the interior of the hood to wash off the adhered oil, if the oil adhered inside the hood is oxidized and becomes sticky, cleaning is not possible. May be complete.

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

[0009]

According to a first aspect of the present invention, there is provided a hood 2 having an air intake 8, a blower 3 for taking in oil smoke from the air intake 8 together with air, and discharging the smoke to the outside through a filter 10. 2 is a range hood provided with a steam ejection section 30 provided in the inside 2 and means for feeding steam to the steam ejection section 30.

According to a second aspect of the present invention, in the first aspect, the steam pumping means includes a steam generator 41 and the steam generator 41.
And a water tank 43 for storing the steam generated in
A water supply pump 40 for pumping water in the steam generator 41 is provided. At least a steam reservoir 42 and the steam generator 41 are provided in the hood 2, and at least a water tank 43 is detachably provided outside the hood 2. There is a range hood.

According to a third aspect of the present invention, in the second aspect, a blind panel 47 is provided on a lower surface of the hood 2 and the water tank 43 is provided.
And a vertical hood that functions as a rising airflow guide during normal use and a horizontal hood that exposes the water tank 43.

According to a fourth aspect of the present invention, there is provided a range hood according to the first, second, or third aspect, wherein the range hood is operated for a predetermined time after cleaning by spraying steam into the hood 2.

[0013]

According to the first aspect of the present invention, by spraying steam onto the oil adhering to the inside of the hood 2, the oil is softened to have a fluidity and drops from the adhering portion. Therefore, even if the oil is oxidized and has tackiness, it can be reliably washed.

According to the second aspect of the present invention, the steam generated by the steam generator 41 is stored in the steam storage container 42, and the steam is pressure-fed from the steam storage container 42 to the steam jetting section 30. The steam can be continuously pumped over a long time by using the vessel 41. Further, the steam generator 41 and the steam reservoir 42
Since the hood 2 is provided in the hood 2, it can be mounted simultaneously with the mounting of the range hood, which is preferable in terms of mounting work, mounting space, and appearance. Also, since the water tank 43 is provided detachably outside the hood 2, the water tank 4
3 is easy to refill with water.

According to the third aspect, the water tank 43 is covered with the blind panel 47, so that the water tank 43 is not visible from the room and has a good appearance. Easy to inhale. In addition, since the water tank 43 is exposed by setting the blindfold panel 47 to the horizontal position, the water tank 43 can be easily attached and detached.

According to the fourth aspect, the inside of the hood 2 can be dried by operating the range hood after cleaning.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a range hood is formed by a hood 2 mounted above a range hood mounting portion 1 such as a wall of a house, and a blower 3 mounted on an upper portion of the hood 2. . This range hood is located above range 4. The hood 2 includes a lower plate 5, an upper plate 6, and a peripheral plate 7
The lower plate 5 has an air intake 8 formed therein. A suction port 9 is formed in the upper surface plate 6, and a filter 10 is attached to the suction port 9. The lower plate 5 is slanted so that the left and right ends (portions closer to the range hood mounting portion 1) are lower than the horizontal, and the lower left and right ends of the lower plate 5 are filled with oil or the like washed from inside the hood 2. An oil reservoir (oil pack) 11 for storing is formed. The oil reservoir 11 is detachable so that the oil that has been removed can be discharged. For example, as shown in FIG.
A discharge port 11a is formed in a low portion of the oil container, and the oil pack 11 is detachably attached to the discharge port.

The blower 3 is provided with a fan 13 in a casing 12, and the fan 13 is driven to rotate by an electric motor 14. An inlet 15 of the casing 12 communicates with the suction port 9 of the hood 2, and an outlet 16 communicates with the duct 17. The duct 17 penetrates a ceiling panel 18 and extends to the outside through the ceiling.

A cleaning cover 19 is provided in the hood 2 so as to be vertically movable by an elevating mechanism 20. The lifting mechanism 2
Numeral 0 includes a pinion 22 rotated by an electric motor 21, a rack 23 meshed with the pinion 22 and supported movably up and down, and a vertical rod 24 connected to the rack 23.
The vertical rod 24 is connected to the washing cover 19.
When the pinion 22 is rotated forward and backward by the electric motor 21, the cleaning cover 19 moves up and down, and the air intake 8 is opened or closed.

In the hood 2, a steam jetting section 30 is disposed so as to face the filter 10 and the inner surface of the hood 2, that is, inside the hood 2. The steam jetting section 30 has a nozzle main body 31, and the nozzle main body 31 is rotatably attached to a distal end portion of a pipe 32 substantially along a horizontal plane. The nozzle body 31 is provided with a filter nozzle 33 at the center in the longitudinal direction, a hood nozzle 34 near both ends in the longitudinal direction, and a rotation nozzle 35 at both ends in the longitudinal direction. The filter nozzle 33 has a shape facing the filter 10 directly upward and obliquely upward, the hood nozzle 34 has a shape facing substantially horizontally and facing the inner surface of the hood 2, and the rotation nozzle 35 has one side in the horizontal direction. The shape is suitable for

As shown in FIGS. 1 and 2, a water supply pump 40 and a steam generator 41 are provided at one end in the width direction at one left and right end inside the hood 2, and the widthwise middle portion at the left and right end inside the hood 2 is provided. A steam reservoir 42 is provided in the section.
The water supply pump 40 is mounted on the upper surface of the lower plate 5,
The discharge side communicates with the inlet of the steam generator 41, and the water in the water tank 43 is passed through the water filter 44 to the steam generator 41.
To pump. The steam generator 41 is provided with a heater in a container, and the heater is energized to generate heat, thereby heating water to generate steam. The steam generated by the steam generator 41 is sent to the steam reservoir 42 described above.

The steam reservoir 42 has a pressure valve 45. The pressure valve 45 controls the steam pressure in the steam reservoir 42 to a set pressure, for example, 0.392 MPa (4.0 kg / cm).
^When it reaches ² ), it is opened and below it it is closed.
The pipe 32 of the steam jetting section 30 is connected to the pressure valve 45, and when the pressure valve 45 is opened, steam is pumped to the nozzle body 31 through the pipe 32. The steam reservoir 4
The second bottom surface 42a is inclined toward the hood width direction, and a drain valve 46 is mounted at a low position.

The water filter 44 is attached to the lower surface of the lower plate 5 of the hood 2 and is exposed to the outside of the hood 2. A filter element 44b is provided in a case 44a, and the filter element 44b is removed by removing a lid 44c.
Can be taken out for cleaning or replacement. The case 44a has a water tank mounting portion, for example, a female screw portion 44d.
The water tank 43 is detachably attached by screwing the male screw portion 43a of the water tank 43. The water filter 44 (filter element 44b) collects a corrosion-causing substance, such as a disinfectant or disinfectant in tap water, which may cause corrosion of the inner surface of the hood 2 at an early stage.

One end of a blind panel 47 is attached to a lower end plate 5 of the hood 2 near one of the left and right ends by a hinge 48 so as to be vertically rotatable. The blindfold panel 47 is held by a spring or the like provided on the hinge 48 in a vertical position in which the other end thereof is in contact with the range hood mounting portion 1, and the water tank 43 and the water filter 44 are covered with the blindfold panel 47. I do not have it. The blindfold panel 47 has a function as an updraft guide when the range hood is normally used. Magnets 49 are provided at the other left and right ends of the lower surface plate 5 of the hood 2.
9 is held.

An operation panel 50 is mounted on the front of the hood 2. As shown in FIG. 3, the operation panel 50 is provided with an operation unit 51 for a range hood. The operation unit 51 for the range hood includes an off switch 52a, a weak operation switch 52b, a middle operation switch 52c, and a strong operation switch 5.
2d, a timer switch 52e, and a lighting switch 52f. The configuration of this switch is an example, and there may be a difference in configuration depending on the function. The operation panel 50 includes a cleaning selector 53, a cleaning start button 54, a first
A timer 55 and a second timer 56 are provided. These operation signals and the like are input to the controller 57. The controller 57 drives the electric motor 15 of the blower 3, the electric motor 21 of the elevating mechanism 20, and the electric motor 40a of the water supply pump 40 based on the input signal and the like, and energizes the heater 41a of the steam generator 41. The operation panel 5
The arrangement and arrangement of the 0 and the range hood operation unit 51 may be changed depending on the allowable space.

The cleaning selector 53 is in the cleaning lock position 5
3a and the cleaning position 53b are manually switched. The first
The timer 55 sets a cleaning time per one time. The washing time per time is set according to the contents of cooking in the range, for example, whether the amount of oil used is large or small. The second timer 56 sets a drying operation time described later.

Next, the cleaning operation will be described. Blindfold panel 4
The air inlet 8 is closed with the 7 in the horizontal position. Water tank 4
3 is removed, tap water is filled up to a specified line (not shown), and the water tank 43 is attached again. Remove the oil reservoir 11 and confirm that it is empty. Move the cleaning selector 53 to the cleaning lock position 53
Switch from a to the cleaning position 53b. The washing start button 54 is pressed.

As a result, a cleaning start signal is input to the controller 57, and the controller 47
The electric motor 21 is driven to move the cleaning cover 19 downward to close the air intake 8. After this, the steam generator 4
The electric motor 40a of the water supply pump 40 is driven at the same time as the current is supplied to the first heater 41a, and the tap water in the water tank 43 is pumped to the steam generator 41 through the water filter 44 by the water supply pump 40. The steam generated by the steam generator 41 is stored in a steam storage container 42. When the pressure of the steam in the steam reservoir 42 reaches the set pressure, the pressure valve 45 opens and the steam is supplied to the nozzle body 31 via the pipe 32. While the nozzle body 31 rotates, the inner surface of the hood 2 and the filter 1
0 (inside the hood 2).

The oil adhering to the interior of the hood 2 is softened by the steam to have a fluid state, and is dropped from the adhering portion, and the oil is condensed water (water generated by cooling the steam).
Along with the oil passage inside the hood 2 (this is not a specially provided, but mainly the lower plate 5), and flows into the oil sump 11 and accumulates.

After the cleaning for the cleaning time set by the first timer 55, the power supply to the heater 41a of the steam generator 41 is stopped, and at the same time, the electric motor 40a of the water supply pump 40 is stopped. When the steam pressure in the steam reservoir 42 falls below the set pressure, the pressure valve 45 closes, and the washing is completed. The steam in the steam reservoir 42 is cooled to form condensed water,
It flows downward along a and accumulates at the lowest part.

After the completion of the above-described cleaning, the controller 57 drives the electric motor 21 of the elevating mechanism 20 to operate the cleaning cover 1.
9 is moved slightly upward, the air inlet 8 is slightly opened, and the electric motor 15 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 second timer 56, for example, 10 minutes Run dry. As a result, the inner surface of the hood 2 and the filter 10 are in a dry state where water is not attached.

Thus, a series of cleaning operations is completed, and thereafter, the following post-processing is performed. Remove the water tank 43, drain the remaining water inside, and reinstall. The drain valve 46 is opened to drain the condensed water accumulated in the steam reservoir 42. The oil sump 11 is removed and the oil etc. accumulated inside is drained. The cleaning selector 53 is returned to the cleaning lock position 53a. The blindfold panel 47 is in the vertical position.

As described above, the steam generated by the steam generator 41 is stored in the steam storage container 42, and is sent from the steam storage container 42 to the nozzle body 31 (steam ejection section 30) by pressure.
By using the small-sized steam generator 41, the steam can be continuously and stably pumped to the nozzle body 31 for a long time. Further, by reducing the size of the steam generator 41, the steam generator 41 can be mounted inside the hood 2 together with the steam reservoir 42.

Although the water supply pump 40 may be mounted outside the hood 2, it is more advantageous to mount it inside the hood 2 from the viewpoint of mounting work, mounting space, and the like.

A means for pumping steam to the nozzle body 31 by the water supply pump 40 and the steam generator 41 is provided. The water supply pump 40 and the steam generator 41 are installed in a place different from the range hood, for example, under a sink. Alternatively, the steam may be pressure-fed to the steam ejection unit 30 inside the hood 2 using a pipe. Further, the steam jetting section 30 may be one in which a plurality of nozzles are attached so as to face each part of the inner surface of the filter 10 and the hood 2.

[0036]

According to the first aspect of the present invention, the hood 2
By spraying steam onto the oil adhering to the inside, the oil is softened to have a fluidity and drops from the adhering portion. Therefore, even if the oil is oxidized and has tackiness, it can be reliably washed.

According to the second aspect of the present invention, the steam generated by the steam generator 41 is stored in the steam storage container 42, and the steam is pressure-fed from the inside of the steam storage container 42 to the steam jetting section 30. By using the steam generator 41, steam can be continuously pumped over a long period of time. Further, since the steam generator 41 and the steam reservoir 42 are provided in the hood 2, they can be mounted at the same time as the range hood is mounted, which is preferable in terms of mounting work, mounting space, appearance, and the like. In addition, water tank 4
Since 3 is provided detachably outside the hood 2, it is easy to supply water to the water tank 43.

According to the third aspect of the present invention, the water tank 43 is covered with the blind panel 47, so that the water tank 43 is not visible from the room and has a good appearance. 8 makes it easier to inhale. In addition, since the water tank 43 is exposed by setting the blindfold panel 47 to the horizontal position, the water tank 43 can be easily attached and detached.

According to the fourth aspect of the present invention, the inside of the hood 2 can be dried by operating the range hood after cleaning.

[Brief description of the drawings]

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

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

FIG. 3 is an operation control circuit diagram.

[Explanation of symbols]

2 hood, 3 blower, 8 air inlet, 10 filter, 11 oil reservoir (oil pack), 14 fan, 15 electric motor, 30 steam outlet, 40 water pump, 41 Steam generator, 42 ... Steam reservoir, 43 ...
Water tank, 44: Water filter, 46: Drain cock, 47: Blindfold panel, 50: Operation panel, 51: Operating unit for range hood, 57: Controller.

Claims (4)

[Claims] 1. A hood 2 having an air intake 8, a blower 3 which takes in oil smoke from the air intake 8 together with air and discharges it outside through a filter 10, and a steam jetting section 30 provided in the hood 2. A range hood provided with means for pumping steam to the steam jetting section 30. 2. The steam pumping means comprises a steam generator 41.
A steam reservoir 42 for storing steam generated by the steam generator 41, and a water supply pump 40 for pumping water in the water tank 43 into the steam generator 41. At least the steam reservoir 42 and the steam generator 41 Is food 2
The range hood according to claim 1, wherein at least the water tank 43 is detachably provided outside the hood 2. 3. A blind panel 47 provided on a lower surface of the hood 2.
3. A vertically movable attitude covering the water tank 43 and having a function as an ascending airflow guide in a normal use, and a horizontal attitude exposing the water tank 43, and the water tank 43 is vertically rotatably mounted. Range hood. 4. The range hood according to claim 1, wherein the range hood is operated for a predetermined time after the steam is blown into the hood 2 for cleaning.