JPH09220429A - Air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the cleaning efficiency of air. SOLUTION: A water spraying section 11 having plural annular grooves 21 formed stepwise is arranged in an air suction dust 3. When a motor 13 is driven, a fan 16, a sprinkling section 11 and a pump 33 rotate. The external air is sucked by the fan 16 and the pump 33 supplies the water to the annular grooves 21 of the sprinkling section 11. While always the specified volume of the water is maintained in the annular grooves 21, the water is splashed to the outer side by the centrifugal force accompanying with the rotation of the sprinkling section 11, by which the water is sprayed approximately uniformly over the entire circumference of the sprinkling section and to the pass direction of the air. The sprayed water is fogged by passing a meshed section 11. The foggy water and the air are forcibly brought into contact with each other and the dust, etc., including in the air are adsorbed on the water and are removed.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an air cleaning device. For details, use the filter by spraying the water supplied to the multiple annular grooves provided in the water sprinkling unit into a mist by the centrifugal force that accompanies the rotation of the water sprinkling unit and adsorbing dust and the like in the air to this water. The present invention relates to an air purifying device that can purify air without performing.

[0002]

2. Description of the Related Art A conventional air purifier uses activated carbon or a chemical fiber such as polypropylene as a filter, and the suctioned air is forced to pass through the filter to remove dust or odor contained in the air. There is known a filter-type cleaning device that removes. There is also known an ion-type cleaning device in which dust and odor components in the air are charged to, for example, the + side, and this is attracted to the-side electrode and collected with a paper towel or the like.

[0003]

In the filter-type cleaning device of the above-mentioned conventional examples, the filter becomes dirty and clogs relatively quickly, and the cleaning function deteriorates. Therefore, it is necessary to frequently replace the filter. It is not only troublesome, but also expensive. In addition, since the filter is packed with activated carbon, chemical fibers, etc. without gaps, the pressure loss is large, and in addition to requiring a power source with high ability to suck air,
The device becomes larger.

In the ion type cleaning device, when the velocity of the air flow is high, dust and the like charged on the + side are not attracted to the − side and are discharged to the outside together with the air.
The air cannot be forcibly sucked and flowed. Therefore, there is a problem that only the air in the vicinity of the cleaning device can be cleaned, and the cleaning of a large room cannot be dealt with.

Therefore, the present invention has been made to solve the above-mentioned problems and the like, and proposes an air purifying apparatus which is inexpensive and can efficiently purify a wide range of air.

[0006]

In order to solve the above-mentioned problems, the invention described in claim 1 is an air cleaning apparatus for cleaning and discharging air sucked from the outside, and a fan for sucking the outside air, A grooved portion formed in an annular shape, and provided with a water sprinkling unit that rotates and scatters the air cleaning water stored in the groove into the air flow path, and a water supply unit for supplying water to the groove. It is characterized by that.

The fan and the sprinkler part rotate by the driving of the driving means. External air is sucked in through the intake duct by the suction force of the fan, and water is supplied to the groove of the rotating sprinkler. The water flows through the groove and is scattered to the outside by the centrifugal force caused by the rotation of the sprinkler. At this time, since water is sprayed in a state where a substantially constant amount of water has spread over the entire circumference of the groove, water is sprayed substantially uniformly over the entire circumference of the water spray section.

The air taken in is forcibly brought into contact with the sprayed water, and the dust contained in the air is adsorbed on the water.
After that, the water is separated from the air in a state of containing dust in the air, and the air is cleaned. The cleaned air is exhausted to the outside through the exhaust duct.

The invention described in claim 2 is characterized in that, in the invention according to claim 1, a plurality of grooves are provided, and each groove is arranged so as to have a different position in the air passage direction. is there.

When the water sprinkling unit rotates, the centrifugal force causes water to be scattered outward from the plurality of grooves. At this time, since the plurality of grooves are arranged so that the positions thereof are different with respect to the air passage direction, the water is substantially evenly distributed in the height direction of the water sprinkling portion.

[0011]

Next, an embodiment of an air purifying apparatus according to the present invention will be described in detail with reference to the drawings.

FIG. 1 shows the configuration of an air cleaning device 1 according to an embodiment of the present invention. The cabinet 5 of the air cleaning device 1 is a hollow cylindrical body provided with an opening 5a for attaching and detaching the tank 4 at the lower portion of the side surface. An intake port 7 is provided on an upper side surface (upper right side in the figure) of the cabinet 5, and an exhaust port 8 is provided on a side different from the intake port 7 (upper left side in the figure). The air purifying device 1 purifies the air sucked from the intake port 7 by mixing it with water and discharges it from the exhaust port 8. Its function is largely for intake and discharge of air, air-water mixing and air-water separation. First of all,
The air flow path inside the air cleaning device 1 will be described.
The flow path of the air taken in through the intake port 7 is mainly formed by the intake duct 3 and the exhaust duct 6. Inside the cabinet 5, there are provided a partition plate portion 12 located above the intake port 7 to partition the inside of the cylinder, and a water receiving plate portion 14 located above the opening 5a to partition the inside of the cylinder. Partition part 1
The intake duct 3 is between the water receiving plate portion 14 and the water receiving plate portion 14. A control unit 19, which is a substrate on which electronic components for controlling various operations of the air purifying device 1 are mounted, is arranged between the partition plate unit 12 and the upper plate surface of the cabinet 5.

The exhaust duct 6 is vertically arranged in the center of the inside of the intake duct 3 and is supported by a lateral plate portion 10 which is attached across the inside of the cylinder of the intake duct 3. Horizontal plate part 10
A plurality of ventilation holes 10a, 10a are formed along the outer circumference of the exhaust duct 6 in the circumferential direction. Vent 1
0a and 10a are for allowing the air flowing in the intake duct 3 to pass through.

The lower end of the exhaust duct 6 is open and the opening 6
a, and is located above the upper surface of the water receiving plate portion 14 by a predetermined distance. As a result, the air flowing through the intake duct 3 flows into the exhaust duct 6 through the lower end opening 6a.

A fan casing portion 15 having a built-in fan 16 for generating a suction force for sucking the outside air is integrally formed in the upper portion of the exhaust duct 6, and the side surface of one side of the fan casing portion 15 and the exhaust air are exhausted. The mouth 8 is connected by a connecting pipe 9.

In this way, a flow path of air from the intake port 7 to the exhaust port 8 via the intake duct 3, the exhaust duct 6 and the fan 16 is formed.

A motor 13 as a driving means is provided between the partition plate portion 12 and the fan casing portion 15 as a rotating shaft 13 thereof.
It is attached and fixed with a facing downward. The rotating shaft 13a is arranged in the center of the inside of the exhaust duct 6, and its length is set so that its tip penetrates the water receiving plate portion 14. A fan 16, a sprinkler unit 11 and a pump 33, which will be described later, are connected to the rotating shaft 13a. In this way, the fan 16, the sprinkler 11 and the driving means for the pump 33, which will be described later, are shared by the motor 13, so that the number of parts can be reduced and the cost can be reduced.

The above-mentioned air-water mixing for bringing water into contact with the air passing through the air flow path is performed by the water sprinkling section 11 and the water supply means (the pump 33, the water supply pipe 32 and the tank 4).

Sprinkler 1 for spraying water on the air flow path
1 is arranged in the middle of the intake duct 3. As shown in FIGS. 2 and 3, the sprinkling portion 11 is a cylindrical body having a ventilation hole 26 penetrating in the vertical direction at the center thereof, and a plurality of, in the present example, four-tiered U-shaped cross-section ring-shaped on the outer peripheral side surface. Groove 21 is sprinkler 1
The positions are different from each other in the height direction of 1 (direction of passage of air). In the annular groove 21 of the present example, the uppermost stage has the smallest diameter, and the lower stage has the larger diameter. The cross section of the annular groove 21 of the water sprinkling portion 11 may be formed in a U shape or a V shape.

A shelf 22 having a constant width is formed along the outer circumference of the lower end of the lowermost annular groove 21, and the outer edge of the upper surface of the shelf 22 has a width of 90.
Four columns 23 are erected at every angle. Support part 23
An annular frame 24 is connected to the top of the. Mesh (mesh) portions 2 are provided on the outer surfaces of the shelves 22, the columns 23 and the annular frame 24.
5 is attached so as to cover the entire circumference of the annular groove 21. A material such as a cloth filter, a wire mesh, or a sponge is selected for the mesh portion 25.

Four connecting bones 27 are formed obliquely upward from the inner lower end of the vent hole 26 of the water sprinkling portion 11 toward the center.
These are integrated at the center of the vent hole 26, and a cylindrical connecting portion 28 for attaching to the rotary shaft 13a of the motor 13 (FIG. 1) is formed here. The gap between the connecting bones 27 serves as a hole for passing purified air.

As shown in FIG. 4, the connecting portion 28 is connected and fixed to the rotating shaft 13a of the motor 13 so that the water sprinkling portion 11 is arranged in the intake duct 3. Here, the exhaust duct 6 is arranged inside the ventilation hole 26 of the sprinkling portion 11, and the lower end opening 6
a is located near the lower part of the sprinkling section 11.

The exhaust duct 6 is arranged inside the water sprinkling portion 11 so that the outer diameter of the water sprinkling portion 11 can be set large. By enlarging the water sprinkling unit 11, water can be sprayed over a wide range, and the air cleaning efficiency can be improved. For example, high cleaning efficiency can be achieved even when the motor 13 is driven at a relatively low speed.

A top plate 31 having the same width and horizontally protruding is formed along the outer peripheral surface of the exhaust duct 6. The top plate 31 is arranged close to the annular frame 24 of the sprinkler 11, and
The outer diameter is set to be substantially the same as the diameter of the annular frame 24. This prevents air from entering the inside of the mesh portion 25 from above. Ribs 57 are formed on the lower surface of the top plate 31 along the outer circumference of the exhaust duct 6. This is because water drops are sucked into the exhaust duct 6 along the lower surface of the top plate 31,
Prevents moisture from mixing with the discharged air. Further, the top plate 31 is provided with a discharge hole 31 a located right above the annular groove 21 of the water sprinkling portion 11.

The water supply means for supplying water to the sprinkling section 11 is composed of the pump 33, the water supply pipe 32 and the tank 4 shown in FIG. The pump 33 is attached to the lower surface of the water receiving plate portion 14 and is connected to the rotating shaft 13 a of the motor 13. The water supply pipe 32 is for supplying water to the annular groove 21 of the water sprinkling portion 11, and one end thereof is the discharge hole 3 of the top plate 31.
1a (FIG. 4), which is located directly above the annular groove 21,
The other end is connected to the tank 4 via the pump 33.

The tank 4 is a hollow body having an L-shaped cross section and is detachably attached to the apparatus main body through the opening 5a. The tank 4 is composed of a recovery unit 34 for recovering the water used for cleaning, a filter 35 for cleaning dirty water in the recovery unit 34, and a supply unit 36 for storing the cleaned water. Has been done.

The water supply pipe 32 is provided on the upper side surface of the supply unit 36.
A cylindrical connecting portion 38 for connecting with the drain pipe 37 and a cylindrical connecting portion 39 for connecting with the drain pipe 37 are provided. When the tank 4 is detached from the main body, the connecting portions 38 and 39 are constructed so as to be detached from the water supply pipe 32 and the drain pipe 37. A tube 40 for guiding water from the supply unit 36 to the water supply pipe 32 is connected to the connecting unit 38, and a tube 41 for guiding water from the drainage pipe 37 to the collecting unit 34 is provided at the connecting unit 39. .

The water receiving plate portion 14 separates the water sprayed from the water spray portion 11 from the air sucked from the outside (air-water separation). As shown in FIG. 5, the water receiving plate portion 14 is provided with a circular water reservoir 51 at the center thereof. This water reservoir 5
1. Guide vanes 5 curved in a plurality of arcs so as to surround 1
2 are arranged at equal intervals to form a spiral shape. The inner end of the guide vane 52 is made to coincide with the edge of the water reservoir 51, and the upper end of the guide vane 52 has a water sprinkling portion 11 as shown in FIG.
Is located close to the lower surface of. The guide vanes 52 form a flow of air flowing into the exhaust duct 6 and constitute water-air separation means for adhering water to the surface to separate air-water.

As shown in FIG. 5, the inner wall surface of the water reservoir 51 is provided with four drain holes 53 at every 90 degrees. The rotation shaft 13a of the motor 13 (FIG. 1) is provided at the center of the water reservoir 51.
A through hole 55 through which is inserted is formed.

On the lower surface of the water receiving plate portion 14, as shown in FIG. 1, an annular drain groove 5 for collecting water flowing out from the drain hole 53.
4 is attached. The drain groove 54 is formed such that the bottom surface of the groove is inclined, and the above-described drain pipe 37 is connected to the position where the bottom surface is the lowest.

The operation of the air purifying device 1 having the above-described structure will be described below. When the power is turned on and the start of the air cleaning process is instructed, the motor 16, the fan 16, the sprinkler unit 11, and the pump 33 are rotationally driven. A suction force is generated by the rotating fan 16, and the outside air is sucked through the intake port 7. The sucked air is sent downward through the intake duct 3.

On the other hand, water is supplied from the supply part 36 in the tank 4 by the pump 33 that is driven to rotate, and the tube 4
As shown in FIG. 4, water is discharged from the discharge hole 31a of the top plate 31 through the connection member 0, the connecting portion 38, and the water supply pipe 32. This water falls into the four annular grooves 21 of the sprinkling section 11 located right below.

This water flows through the annular groove 21, and the sprinkling section 1
It is scattered to the outside of the annular groove 21 by the centrifugal force accompanying the rotation of 1. In this way, the water is sprayed in a state where the water has spread to the annular groove 21, so that the water is sprayed substantially uniformly over the entire circumference of the water spray section 11 regardless of the position of the discharge hole 31a. Further, since the annular groove 21 is formed stepwise, the water is sprayed substantially evenly in the height direction of the water spray section 11.

The scattered water passes through the mesh portion 25.
At this time, water droplets are subdivided into mist-like water and are ejected into the intake duct 3. The air passing through the intake duct 3 is forcibly brought into contact with this water, and dust and the like contained in the air are adsorbed on the water droplets. By spraying the water in the form of mist, the contact area between the air and the water can be increased, dust and the like can be easily adsorbed on the water droplets, and the air cleaning efficiency can be improved.

Since the radius of the upper annular groove 21 is smaller, the momentum of the jetted water varies, but when passing through the mesh portion 25, it is scattered substantially uniformly.

Further, since the upper opening of the mesh portion 25 is closed by the top plate 31 and the ribs 57, air does not flow into the inside of the mesh portion 25, and the air is always in the mesh portion 2.
It will pass outside 5. Therefore, the air is always in contact with the mist-like water, and the cleaning efficiency of the air can be further improved.

The air containing water droplets reaches the lower water receiving plate portion 14 as it is. In the water receiving plate portion 14, air tries to flow into the exhaust duct 6 (FIG. 1) and turns its flow upward. In the water receiving plate portion 14, as shown in FIG. 5, air and water are guided to the central water reservoir 51 along the guide vanes 52. Generally, turbulence or the like is likely to occur at a location where the air flow sharply bends, but the guide vanes 52 prevent the turbulence or the like from forming the air flow.

Further, the air containing water droplets is guided while being in contact with the guide blades 52, so that the water droplets containing dust and the like adhere to the guide blades 52 to separate air and water. At this time, dust and the like contained in the air are removed together with the separated water, and the air is cleaned. The water droplets attached to the guide vanes 52 are pushed by the flow of air and collected in the water reservoir 51. In the water reservoir 51, water forms a vortex along the air flow, is collected near the inner wall surface, and is discharged from the drain hole 53.

This water flows through the drainage groove 54 shown in FIG. 1 and is collected in the collecting part 34 of the tank 4 through the drainage pipe 37. The water in the recovery unit 34 is cleaned when passing through the filter 35, and then stored in the supply unit 36 and reused. On the other hand, the purified air rises in the exhaust duct 6 and is discharged to the outside from the exhaust port 8 by the fan 16.

As described above, the air purifying apparatus 1 forcibly brings air into contact with water and adsorbs dust in the air, so that the air can be efficiently cleaned with a simple structure.

Further, in the air purifying apparatus 1, since the exhaust duct 6 is arranged inside the water sprinkling portion 11, the outer diameter of the water sprinkling portion 11 can be set large. Therefore sprinkler 1
1 can be enlarged to improve the air cleaning efficiency.

Further, in the air purifying apparatus 1, the fan 16 also has a function of generating a forced air circulation route to the inside and outside of the air purifying apparatus 1, so that the air cleaning in the room is promoted and a wide range of air is cleaned. be able to. If the water stored in tank 4 becomes dirty, tank 4
It is only necessary to remove and replace the water, and maintenance is extremely easy and inexpensive.

[0043]

As described above, the invention described in claim 1 is an air cleaning device for cleaning and discharging air sucked from the outside, and a fan for sucking the outside air,
It has a groove formed in an annular shape, and is provided with a water sprinkling unit that rotates and scatters the air-purifying water stored in the groove into the air flow path, and water supply means for supplying water to the groove. It is characterized by that.

Therefore, according to the present invention, since dust and the like contained in the air are adsorbed and removed by water, consumables such as a filter are not required unlike the filter type air cleaning device, so that the cost can be reduced. Moreover, it becomes possible to purify the air over a wider range than the ion type air purifying device. Further, by sprinkling water by the centrifugal force in a state where water has spread to the annular groove of the sprinkling section, water can be sprayed substantially uniformly over the entire circumference of the sprinkling section, and the air can be cleaned more effectively. It can be carried out.

The invention described in claim 2 is characterized in that, in the invention according to claim 1, a plurality of grooves are provided, and each groove is arranged so as to have a different position in the air passage direction. is there. Therefore, water can be sprayed substantially uniformly in the air passage direction, and the air can be cleaned more effectively.

Further, when the mesh portion is provided around the annular groove, the sprayed water becomes more mist, and a large contact area with the air is ensured so that dust or the like is easily adsorbed to the water, It becomes possible to improve the cleaning efficiency.

Further, when the top plate closes the opening communicating with the inside of the mesh portion, it is possible to prevent air from entering the inside of the mesh portion and further improve the air cleaning efficiency. There is an effect that it becomes possible.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a configuration of an air cleaning device 1 according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the shape of the water sprinkling section 11.

FIG. 3 is a cross-sectional view of the water sprinkling section 11.

FIG. 4 is a cross-sectional view showing the operation of the water sprinkling section 11.

FIG. 5 is a sectional view taken along line AA of FIG. 1;

[Explanation of symbols]

 1 Air Purification Device 3 Intake Duct 4 Tank 6 Exhaust Duct 7 Intake Port 8 Exhaust Port 11 Sprinkler 13 Motor 13a Rotating Shaft 14 Guide Blade 16 Fan 21 Annular Groove 25 Mesh Part 31 Top Plate 32 Water Supply Pipe 33 Pump 51 Water Pool

Claims (4)

[Claims] 1. An air purifying device for purifying and exhausting air sucked from the outside, which has a fan for sucking external air and a groove formed in an annular shape and which is rotated and stored in the groove. An air purifying device comprising: a water sprinkling unit that scatters cleaning water into an air flow path; and a water supply unit that supplies water to the groove. 2. The air cleaning apparatus according to claim 1, wherein a plurality of the grooves are provided, and the grooves are arranged so as to have different positions with respect to the air passage direction. 3. The air cleaning apparatus according to claim 1, wherein a mesh portion is arranged around the plurality of annular grooves. 4. The air cleaning apparatus according to claim 3, further comprising a top plate which is disposed above the water sprinkling portion and closes an inner opening of the mesh portion.