JPH11179128A - Air cleaning apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air cleaning apparatus capable of solving the clogging of a purifying part with oils and powder dust and scarcely requiring maintenance of the purifying part at every prescribed time. SOLUTION: This apparatus comprises a cleaning part constituted by installing a water supply nozzle 3 in the front side of a ventilation route A in the upper part of a filter 2 installed in the ventilation route A of a hood main body 5 and a water-proof pan 4 for receiving water in the lower part and carries out air cleaning by sucking and ventilating object air subjected to purification by a suction fan 6 through the ventilatioln route A. Water is supplied during the cleaning or after cleaning operation. In this case, a hydrophilizing means for hydrophilizing the surface of the filter 2 to water supply is installed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifying apparatus which is installed mainly on cooking equipment in a kitchen and which purifies and exhausts air to be purified such as oily smoke generated during cooking.

[0002]

2. Description of the Related Art In recent years, even at home, a ventilator for sucking, purifying and exhausting air to be purified such as oil smoke generated during cooking in a kitchen or the like has become widespread. This type of ventilation system
An air purifier that purifies and exhausts indoor air from a kitchen or the like, and is generally called a range hood, and is installed above a range table, which is cooking equipment provided in the kitchen.

In the above-mentioned air purifying apparatus, for example,
Short slit-shaped long holes 21a and 22a made of a metal plate material such as stainless steel as shown in FIG.
The two perforated plates 21 and 22 formed by arranging a large number of (not shown) in the horizontal direction are relatively opposed to the long holes 21a and 22a and the non-hole portions 21b and 22b (not shown) other than the long holes. Filters are formed side by side. Then, air to be purified such as oil smoke generated during cooking is suctioned through the ventilation path by an intake fan provided in the hood main body, and is ventilated through the perforated plates 21 and 22 to purify the air and pass through the air duct. Exhaust to the outside.

That is, in the perforated plates 21 and 22, an oil component having a large mass in the air to be purified is accelerated by the long holes 21a of the first perforated plate and collides with the second non-porous portion 22b. The air is captured and purified. The oil component adhering to the surfaces of the perforated plates 21 and 22 needs to be washed off at regular intervals using a detergent or the like. Many filters such as the perforated plates 21 and 22 are shown in FIG. As described above, the oil purifier 1 is inclined and installed in the air purification device 1, and the lower edge thereof is provided with an oil receiver C for collecting and collecting the captured oil component. Can be easily and collectively discarded.

[0005]

However, in the above-mentioned conventional technique, the perforated plates 21 and 22 are provided at regular intervals.
It is necessary to perform a care operation for the filter, such as cleaning the surface or cleaning the oil receiver C by discarding the oil collected in the oil receiver C. Accordingly, there has been an increasing demand for an air purification device that does not require this maintenance work, and the present applicant has also stipulated that two perforated plates be provided with a ventilation path such that the long holes and the non-holes face each other. A purification section is formed substantially horizontally side by side in the inside, and the cleaning water is supplied from the water supply means to the surface of the perforated plate, and the air to be purified is passed through a ventilation path from the bottom to the top of the perforated plate. Has proposed an air purifying apparatus for purifying air and exhausting air by sucking and aeration and bubbling cleaning water.

[0006] This air purification device purifies air by capturing dust, oil components and the like from the air to be purified with high efficiency by bubbling of the cleaning water, and discharges the air together with the cleaning water.
Therefore, the above-mentioned maintenance work at regular intervals is not required, and domestic labor can be reduced. However, this air purification device has a problem to be solved in that oil containing dust such as dust accumulates between the perforated plates of the purification unit for a long period of time and the long holes are clogged.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to eliminate clogging of a purification unit with oil, dust, or the like, so that it is almost unnecessary to maintain the purification unit at regular intervals. An object of the present invention is to provide an air purification device.

[0008]

In order to achieve the above object, an air purifying apparatus according to the present invention is characterized in that a water supply means is provided in front of a ventilation path above a filter provided in a ventilation path in a hood body, and water is provided below. An air purification device that arranges a purifying section by arranging a waterproof pan for receiving and purifies air by suctioning and purifying air to be purified through a ventilation path with an intake fan, and supplying water to a filter during or after the purification operation. , A hydrophilizing means for hydrophilizing the water supply on the filter surface is provided.

Therefore, in this case, a large wet surface can be secured on the filter surface with a small amount of water.

[0010] In the air purifying apparatus according to the second aspect, a hydrophilic paint is applied to the surface of the filter according to the first aspect to serve as a hydrophilizing means.

Therefore, in this case, hydrophilicity can be obtained by applying a paint to the filter surface.

The air purifying apparatus according to a third aspect of the present invention is provided with a surfactant mixing section for mixing a surfactant into water supplied to the filter according to the first embodiment, and the surfactant mixing section is used as a hydrophilic means. I have.

Therefore, in this case, the surfactant can be mixed in the water supplied from the surfactant mixing portion to the filter, and the filter can be made hydrophilic.

In the air purifying apparatus according to a fourth aspect of the present invention, the filter according to the first aspect is formed of an aluminum material, and the surface of the filter is treated with an oxide film, thereby forming a hydrophilic means.

Therefore, in this case, hydrophilicity can be obtained by forming the filter from an aluminum material and treating the surface with an oxide film.

Further, an air purifying apparatus according to a fifth aspect is provided with a heating section for heating water supplied to the filter according to any one of the first to fourth aspects.

Therefore, in this case, the water supply to the filter is heated.

[0018]

1 to 6 show a first embodiment corresponding to claims 1 and 2 of the present invention, and FIG. 7 shows a second embodiment corresponding to claim 3 of the present invention. FIG. 8 shows an embodiment, and FIG. 8 shows a third embodiment corresponding to claims 4 and 5 of the present invention.

[First Embodiment] FIG. 1 is a schematic configuration diagram showing an air purifying apparatus according to a first embodiment. FIG.
FIG. 2 is an exploded perspective view of a filter which is a main part of the air purification device. FIG. 3 is an explanatory diagram of a filter that is a main part of the air purification device. FIG. 4 is an explanatory diagram of hydrophilicity of a filter of the air purification device. FIG. 5 is a partial configuration diagram illustrating a purification unit of the air purification device. FIG. 6 is an explanatory diagram of a water supply nozzle of the air purification device.

The air purifying apparatus 1 of this embodiment has a water supply means on the front side of a ventilation path above a filter 2 provided in a ventilation path A in a hood body 5 and a waterproof pan 4 for receiving water below.
And a purifying section is formed, and the air to be purified is supplied to the intake fan 6.
In the air purifying apparatus 1 for supplying air to the filter 2 during or after the purification operation by suctioning and ventilating the air through the ventilation path A, and providing the filter 2 with hydrophilicity, the surface of the filter 2 is provided with a hydrophilicizing means.

Further, the air purifying apparatus 1 of the embodiment is
A hydrophilic paint is applied to the surface of the filter 2 to serve as a hydrophilizing unit.

More specifically, the air purification device 1 is installed in a kitchen such as a house, for example, and as shown in FIG.
Oil smoke 11 and the like generated during cooking are sucked into the inside of the hood main body 5 from the opening 5a on the lower surface side of the hood main body 5 which is the entrance of the ventilation path A, and the air is purified by the filter 2 of the purifying section. The air is exhausted to the outside 14 through the air duct 9, and controls the water supply to the filter 2, the water supply nozzle 3 and the waterproof pan 4, the hood body 5, the intake fan 6, and the water supply nozzle 3 which constitute the purification unit. And an electromagnetic valve 7. In this case, the operation of the intake fan 6 and the solenoid valve 7 is controlled by a control unit (not shown) formed, for example, including a microcomputer.

In this case, the filter 2 is formed of, for example, a metal plate material such as a stainless steel material, and has a hydrophilic coating applied to its surface as a means for making the surface of the filter 2 hydrophilic. Then, as shown in FIG. 2, the perforated plate 21 on the front side of the ventilation path A and the perforated plate 2
And 2. That is, the filter 2 has a double structure in which two perforated plates 21 and 22 in which a large number of long holes 21a and 22a are arranged in the horizontal direction are stacked in parallel in front and rear, and as shown in FIG. One perforated plate 21
The long hole 21a and the non-hole portion 22b of the other perforated plate 22 face each other. In this case, the long hole 21a of the perforated plate 21 is a single long hole communicating from the upper part to the lower part, and its vertical edge is open. Further, as shown in FIG. 2, the non-hole portion 21b is connected at each edge in the vertical direction by a connection piece 21c, and the connection piece 21c is folded in a substantially L shape toward the rear side of the ventilation path A. There is a song. In the present invention, the filter 2
May have any configuration, such as a punched metal or net-like material, in addition to the double structure of the perforated plate.

The above-mentioned hydrophilicity means that when water B from the water supply nozzle 3 adheres to the filter 2, the contact angle θ between the water B and the filter 2 is made 60 degrees or less to have hydrophilicity. . In this case, as the hydrophilic paint, a paint whose manufacturer name is Kansai Paint and whose product name is Cosmer KP9811 is applied, and the contact angle is 20 to 25.
There are degrees.

In this case, as shown in FIG. 5, the filter 2 is disposed such that the front side of the ventilation path A is inclined downward, and at the portion where the filter 2 is disposed,
The lower part of the ventilation path A is a waterproof pan 4, and the waterproof pan 4 is disposed substantially at the center of the waterproof pan 4 in the front-rear direction (the direction of air flow through the ventilation path A) at the front side and the rear side of the ventilation path A. A dividing wall 52 to be divided is formed, and a lower portion of the dividing wall 52 is constituted by the filter 2.

At the front end of the waterproof pan 4, a front wall 41 is provided diagonally toward the front, and the front end of the front wall 41 faces the inclined piece 51 of the hood body 5 via a gap. Therefore, the air that has entered through the opening 5 a on the lower surface side of the hood main body 5 flows through the ventilation path A between the inclined piece 51 and the front wall 41, is changed in direction by the inclined piece 51, and flows toward the filter 2. It has become. At the rear end of the waterproof pan 4, a partition plate 53 for closing the lower part of the ventilation path A is provided between the filter 2 of the ventilation path A and the intake fan 6.

The water supply nozzle 3 is a water supply means for supplying water to the filter 2 and is provided in front of the ventilation path A above the filter 2. In this case, as shown in FIG.
Two spray nozzles that spray in a fan shape with a spray angle of 0 degrees are used, and spray water is supplied in a direction substantially parallel to the front side of the ventilation path A of the filter 2. The water supply nozzles 3 and 3 spray water in a fan shape, and the water supply nozzles 3 wet a wide range of filter surfaces so that the fan shapes intersect. Therefore, when the direction of the spray from the water supply nozzle 3 is sprayed downward from above and sprayed along the front surface of the filter 2 substantially in parallel with the front surface of the filter 2, the spraying force from the water supply nozzle 3 is The dust attached to the front surface of the filter 2 can easily flow down due to a synergistic effect with the force of the gravity drop. The angle between the water supply nozzle 3 and the front side surface of the filter 2 may be an acute angle with respect to the front side surface of the ventilation path A, instead of being substantially parallel.

A cover 54 is disposed on the side of the water supply nozzles 3, 3.
The front cover 54a is provided so as to face the water, so that the water sprayed from the water supply nozzle 3 is not scattered to the front side. As shown in FIG. 1, at the rear of the waterproof pan 4, that is, at the position behind and behind the filter 2 of the waterproof pan 4,
A drain port 42 and a water level sensor 8 are provided. The drainage pipe 42 is connected to the drainage port 42 via a trap portion such as a U-shaped trap. The drainage pipe 12 is connected to a drainage pipe of a kitchen or the like (not shown).

As the intake fan 6, a fan such as a sirocco fan is used, and a suction port 6a is provided at a front end. In this case, the positional relationship between the upper end of the suction port 6a and the upper end of the partition plate 53 is as shown in FIG.
The height of the upper end of the partition plate 53 is adjusted to the suction port 6 of the intake fan 6.
It is higher than the upper end of a.

A water supply pipe 13 for supplying water to the water supply nozzle 3 is provided with a solenoid valve 7. The solenoid valve 7 is controlled to open and close together with the intake fan 6 by a control signal from a control unit (not shown). For example, during or after the purification operation by the intake fan 6, continuously or intermittently. Water is supplied from the water supply nozzle 3.

As a specific example of the opening / closing control of the electromagnetic valve 7 by the control unit, control is performed so that the electromagnetic valve 7 is closed when the intake fan 6 is not used. By operating the operation switch of, the intake fan 6 is started to perform the purification operation. When the purifying operation is completed, the operation switch is operated to stop the operation of the intake fan 6. During operation of the intake fan 6 and for a predetermined time after the operation is stopped, the solenoid valve 7 is opened to supply water to the water supply nozzle 3, and water is sprayed downward from the water supply nozzle 3 in a fan-like manner. Is washed, and oil and dust adhering to the filter 2 are washed away from the surface of the filter 2 during and after the purification operation, and are drained from a drain port 42 provided in the waterproof pan 4 described later.

The air purifying apparatus 1 described above performs the hood operation during the ventilation operation for purifying the air, that is, when exhausting the oily smoke 11 and the like generated during cooking in the range 10 to the outside 14 through the air duct 9. By operating the intake fan 6 provided in the main body 5, the air to be purified including the oil smoke 11 and the like enters through the opening 5 a on the lower surface side of the hood main body 5, and the inclined piece 5
The air flows between the front wall 41 and the front wall 41, is turned by the inclined piece 51, is sent to the filter 2, and the oil and dust in the oily smoke 11 are separated and removed by the filter 2. That is, since the perforated plates 21 and 22 of the filter 2 are juxtaposed so that the long holes 21a and 22a and the non-hole portions 21b and 22b face each other, one oil component in the air to be purified is removed. Eye perforated plate 21
Is accelerated by the long hole 21a, collides with the non-hole portion 22b of the second perforated plate 22, is captured, separated and removed, and air purification is performed.

In this case, the operation switch is operated to start the ventilation operation, the solenoid valve 7 is opened, and the water supply nozzles 3, 3 are opened.
To the perforated plate 2 of the filter 2 from above.
It is sprayed along the front surface substantially parallel to the front surface. As a result, oil, dust, and the like are reduced to the non-porous portions 21b of
Captured at 22b and flushed into the water. That is, the non-porous portion 21b of the perforated plate 21 at the front side of the ventilation path A
Then, a flow of water is generated in the non-hole portion 22b of the rear perforated plate 22, and the long holes 21a, 22a communicating from the upper portion to the lower portion of the perforated plate are formed.
Along the non-hole portions 21b and 22b. And
The operation switch is operated to terminate the ventilation operation. After that, the filter 2 is sprayed and supplied with water for a predetermined time,
The remaining oil and dust caught by the non-porous portions 21b and 22b of 22 are washed away by water.

Here, as shown in FIG. 4, the surface of the perforated plates 21 and 22 of the filter 2 is subjected to a hydrophilic treatment, so that a small amount of water can be used to secure a wide wet surface on the surface of the filter 2, and The cleaning property by water supply can be improved. That is, by applying a hydrophilic coating material to the surfaces of the porous plates 21 and 22, the surface of the filter 2 can be easily made hydrophilic, and the amount of adhered dust remaining without flowing can be greatly reduced.

In this case, the width of the non-hole portion 21b between the long holes 21a of the perforated plate 21 on the ventilation path front side is 3 mm.
The non-hole portion 22b between the long holes 22a of the rear porous plate 22
Is 2.5 mm, and the slot 21a of the upstream porous plate 21 is
The width of the non-porous portion 22b between the long holes 22a on the downstream side of the perforated plate 22 is narrower than the width of the non-porous portion 21b between the holes, thereby improving the cleaning performance of the non-porous portion 22b on the downstream side. That is, the non-porous portions 22b of the perforated plate 22 on the downstream side are washed with water sprayed through the long holes 21a on the upstream side, but the non-porous portions 22b between the long holes 22a of the downstream perforated plate 22 are washed.
By reducing the width, the cleaning efficiency is increased, the contact area with dust such as oil and dust is reduced, and the same clean cleaning as the non-porous portion 21b of the porous plate 21 on the upstream side can be performed.

Therefore, the air purifying apparatus 1 described above
According to this, a large amount of wet surface can be secured on the surface of the filter 2 with a small amount of water, so that clogging of the purification unit with oil or dust can be eliminated, and maintenance of the purification unit at regular intervals is almost unnecessary. The cleanability by the water supply nozzles 3 as water supply means can be greatly improved. In addition, since hydrophilicity can be obtained by applying a paint to the surface of the filter 2, the hydrophilicity can be easily obtained, and thus, small-volume productivity is excellent.

[Second Embodiment] FIG. 7 is a schematic configuration diagram showing an air purifying apparatus according to a second embodiment.

This air purifying apparatus differs from the first embodiment only in the structure of the filter and the addition of a surfactant mixing section, and the other components are the same as those in the first embodiment. In the air purifying apparatus according to the present embodiment, the surfactant mixing section 3 for mixing the surfactant into the water supplied to the filter 2 is used.
1 is provided, and the surfactant-mixed portion 31 is used as a hydrophilizing means.

The filter 2 is different from the filter 2 only in that the porous plate 21 on the front side of the ventilation path A and the porous plate 22 on the rear side of the porous plate 21 shown in FIG. 2 are formed of a metal plate material such as stainless steel. No treatment such as painting is performed, and in this case, as shown in FIG. 7, a surfactant for mixing a surfactant such as a neutral detergent into water supplied from the water supply nozzle 3 to the filter 2. A mixing section 31 is provided. The surfactant mixing section 31 permeates and mixes the surfactant into the water inside the water supply pipe 13 little by little through, for example, a permeable membrane.

That is, the surfactant can be mixed into the water supplied from the surfactant mixing section 31 to the filter 2 to make the filter 2 hydrophilic, and as shown in FIG.
By spraying and supplying a small amount of water to the filter 2, a wide wet surface can be secured on the surface of the filter 2, and the cleaning property by spraying and supplying water can be improved. And it is possible to greatly reduce the adhesion dust remaining without being washed away. Incidentally, the contact angle between the surface of the filter 2 and water due to the mixing of the surfactant is substantially 0 degree,
The wettability of the surface of the filter 2 can be further improved.

Therefore, the air purification device 1 described above
According to the above, since the surfactant can be mixed into the water supplied from the surfactant mixing section 31 to the filter 2 to make the filter 2 hydrophilic, the cost of the filter 2 does not increase, and the hydrophilicity can be improved with a simple configuration. Can be obtained, which is excellent in cost.

[Third Embodiment] FIG. 8 is a schematic configuration diagram showing an air purifying apparatus according to a third embodiment.

This air purifying apparatus differs from the first embodiment only in the configuration of the filter and the water supply means, and the other components are the same as those in the first embodiment. In the air purification device, the filter 2 is formed of an aluminum material, and the surface of the filter 2 is subjected to an oxide coating treatment, so that the filter 2 is used as a hydrophilizing unit. Further, the air purification device of the embodiment is
A heating unit 32 for heating water supplied to the filter 2 is provided. In addition, the present invention is not limited to the above-described configuration, and may be one without the heating unit 32 or one having only the heating unit 32.

The filter 2 has a porous plate 21 on the front side of the ventilation path A and a porous plate 22 on the rear side of the porous plate 21 shown in FIG. As a means for hydrophilizing the surface, the surface of the aluminum material is treated with an oxide film. When the surface of the aluminum material is subjected to the oxide film treatment, the contact angle between the surface of the filter 2 and water is approximately 52.
The contact angle can be made smaller than that of approximately 63 degrees when the aluminum material base is kept as it is, and the wettability of the surface of the filter 2 can be improved.

In this apparatus, as shown in FIG. 8, a heater corresponding to the heating section 32 for heating the water supply is provided between the solenoid valve 7 and the spray nozzle serving as the water supply nozzle 3. The heater is, for example, a cord heater wound around the outside of a water supply pipe 13 (not shown) which is arranged in a spiral shape.
Is heated to a water temperature of about 30 degrees or more.

Here, the perforated plates 21 and 22 of the filter 2 are formed of an aluminum material, and the surfaces of the filters are treated with an oxide film to form a hydrophilizing means. A wide area can be secured, and the cleaning property by spray water supply can be improved. That is, the surface of the constituent material of the filter 2 itself can be made hydrophilic, and the amount of adhered dust that remains without flowing can be greatly reduced. In addition, the water supplied to the filter 2 is heated by the heating unit 32, so that the oil component adhering to the filter 2 can be easily released. Can be reduced.

Therefore, the air purification device 1 described above
According to the method, since the filter 2 is formed of an aluminum material and the surface thereof can be made hydrophilic by treating the surface with an oxide film, the surface of the constituent material itself of the filter 2 can be made hydrophilic, and Excellent productivity. Also,
Since the water supply to the filter 2 is heated, it is possible to greatly reduce the oil component remaining without being flown, thereby improving the cleanability.

[0048]

As described above, in the air purifying apparatus according to the first aspect of the present invention, a large wet surface can be secured on the filter surface with a small amount of water. The clogging can be eliminated, and the cleaning unit is hardly required to be cleaned at regular intervals, and the cleanability by the water supply means can be greatly improved.

Further, the air purifying apparatus according to the second aspect has the effect of the first aspect, and can obtain hydrophilicity by applying a paint to the surface of the filter. Therefore, it is excellent in small-quantity productivity.

Further, in the air purifying apparatus according to the third aspect, in addition to the effect of the first aspect, a surfactant is mixed in water supplied from the surfactant mixing section to the filter to make the filter hydrophilic. Since it is possible, it is possible to obtain hydrophilicity with a simple configuration without increasing the cost of the filter.
Excellent in cost.

In the air purifying apparatus according to the fourth aspect, in addition to the effect of the first aspect, the filter can be made of an aluminum material and the surface can be treated with an oxide film to obtain hydrophilicity. In addition, the surface of the constituent material of the filter itself can be made hydrophilic, and therefore, mass productivity is excellent.

In the air purifying apparatus according to the fifth aspect, in addition to the effect of any one of the first to fourth aspects, since the water supply to the filter is heated, the oil component is also washed away. Can be greatly reduced, and thus the cleaning property can be further improved.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram illustrating an air purification device according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of a filter which is a main part of the air purification device.

FIG. 3 is an explanatory diagram of a filter which is a main part of the air purification device.

FIG. 4 is an explanatory diagram of hydrophilicity of a filter of the air purification device.

FIG. 5 is a partial configuration diagram illustrating a purification unit of the air purification device.

FIG. 6 is an explanatory diagram of a water supply nozzle of the air purification device.

FIG. 7 is a schematic configuration diagram illustrating an air purification device according to a second embodiment.

FIG. 8 is a schematic configuration diagram illustrating an air purification device according to a third embodiment.

FIG. 9 is a perspective view showing a filter which is a main part of an air purification device which is a conventional example of the present invention.

FIG. 10 is an explanatory view showing a filter of an air purifying apparatus as a conventional example of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air purification apparatus 2 Filter 3 Water supply nozzle (water supply means) 4 Waterproof pan 5 Hood main body 6 Intake fan 31 Surfactant mixing part (hydrophilization means) 32 Heating part A Ventilation path

Claims (5)

[Claims] 1. A purifying section is formed by disposing a water supply means in front of a ventilation path above a filter provided in a ventilation path in a hood body and a waterproof pan below the filter to form a purifying section. An air purification device for supplying air to a filter during or after a purification operation by suctioning and aeration through a ventilation path to supply water to a filter, wherein air is provided with hydrophilic means for hydrophilizing supply water on a filter surface. Purification device. 2. The air purifying apparatus according to claim 1, wherein a hydrophilic paint is applied to the surface of the filter to make the filter hydrophilic. 3. The air purifying apparatus according to claim 1, wherein a surfactant mixing section for mixing a surfactant into water supplied to the filter is provided, and the surfactant mixing section is used as a hydrophilic means. 4. The air purifying apparatus according to claim 1, wherein the filter is formed of an aluminum material and the surface thereof is subjected to an oxide film treatment to provide a hydrophilizing means. 5. The air purification device according to claim 1, further comprising a heating unit for heating water supplied to the filter.