JPH09267012A - Filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To miniaturize a device and to simplify a constitution by providing a vent hole formed inside a water spraying part and introducing air passed through the outside of a groove and a fan provided inside the vent hole and sucking the air. SOLUTION: This filter 20 is composed of a water spraying part 11 having plural circular grooves formed stepwise and an axial flow fan part 16 arranged inside the vent hole 26 of the water spraying part 11 and the filter is arranged in an intake duct 3. An exhaust duct 6 is inserted into the vent hole 26 of the water spraying part 11. A water receiving plate part 14 having a guide blade 52 is arranged at a lower part of the intake duct 3. The filter 20 and a pump 33 are rotated when a motor 13 is driven. The air at outside is sucked by the rotation of the filter 20. Water is supplied to the water spraying part 11 with the pump 33 and water is dispersed into the intake duct 3 with the water spraying part 11. Air is purified by subjecting it to gas-water separation at the water receiving plate part 14 after forcedly bringing air and water into contact in this way. The constitution is simplified and also intake efficiency is improved since the axial flow fan part 16 is provided inside the water spraying part 11 in this filter 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter device applicable to an air cleaning device or the like. More specifically, the present invention relates to a filter device that is compact in size, has a simplified structure, and has improved suction efficiency by integrally forming a fan that sucks air inside a water sprinkler that sprays water.

[0002]

2. Description of the Related Art Conventionally, there has been proposed an air cleaning apparatus for adsorbing dust and the like in the air to water for cleaning. In this air purifying device, the air is sucked in by a fan, and water is sprayed into the air to bring the air into contact with the water, so that dust and the like in the air are adsorbed to the water for cleaning.

Since such an air cleaning device does not require consumables such as a filter, the cost is low, and a wide range of air can be cleaned by forcibly sucking air with a fan.

[0004]

However, in the above-mentioned conventional air purifying apparatus, since the fan for sucking air and the sprinkling section for sprinkling water on the air are separately provided, the apparatus is large in size. However, there is a problem in that the structure becomes complicated as it becomes older.

The present invention solves the above problems and proposes a filter device that can be applied to an air cleaning device or the like to reduce the size of the entire device and simplify the structure. is there.

[0006]

In order to solve the above-mentioned problems, in the present invention, the dust contained in the air is removed by passing the sucked air through a sprinkled water film. A filter device, which has an annular groove having an opening at an upper portion, and a water sprinkling section that rotates to diverge water accumulated in the groove in an annular direction and to disperse the water into the air passing outside the groove, It is characterized in that it is composed of a ventilation hole formed inside the water sprinkling portion for guiding the air passing through the outside of the groove, and a fan provided inside the ventilation hole for sucking air. .

By driving the driving means, the filter device is rotated and water is supplied to the grooves of the sprinkling section. Air is sucked in by the suction force of the fan provided in the sprinkler,
It passes outside the sprinkler. The water accumulated in the groove 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 all around the groove, the water is sprayed substantially uniformly over the entire circumference of the water spraying section, and the air and water are forced to contact each other. To be

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of an air cleaning device to which a filter device according to the present invention is applied will be described in detail with reference to the drawings.

FIG. 1 shows the structure of an air cleaning apparatus 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 cleaning device 1 cleans the air sucked from the intake port 7 by mixing it with water and discharges it from the exhaust port 8. The air cleaning device 1 has a sprinkler section 11 for sprinkling water and an axial fan section 16. The filter device 20 is integrally provided. Its functions are roughly classified into air intake / exhaust, air-water contact, and air-water separation. First, 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. The space between the partition plate portion 12 and the water receiving plate portion 14 becomes the intake duct 3.

The exhaust duct 6 is formed in a substantially L-shape, and is connected to the vertical portion 6a vertically arranged at the center of the inside of the intake duct 3 and the upper end of the vertical portion 6a by being bent horizontally to the exhaust port 8. It is composed of a horizontal portion 6b. The vertical portion 6a is supported by a horizontal plate portion 10 that is attached across the inside of the cylinder of the intake duct 3.

A plurality of ventilation holes 10a, 10a are formed in the lateral plate portion 10 along the outer circumference of the exhaust duct 6 in the circumferential direction. These vent holes 10a, 10a are for passing the air flowing through the intake duct 3. The lower end of the exhaust duct 6 is opened to form an opening 15. In this way, an air flow path is formed from the intake port 7 through the intake duct 3 and the exhaust duct 6 to the exhaust port 8.

The partition 12 and the horizontal portion 6b of the exhaust duct 6
A motor 13 as a driving means is provided between
It is attached and fixed with 3a facing downward. Rotating shaft 13a
Is disposed 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. The sprinkler 11 and the pump 33, which will be described later, are connected to the rotary shaft 13a. The axial fan unit 1 is provided inside the sprinkler unit 11.
6 are provided. In this way, the driving unit of the water sprinkling unit 11, the axial flow fan unit 16 and the pump 33 is shared by the motor 13, so that the number of parts can be reduced and the cost can be reduced.

Next, the filter device 20 for bringing water into contact with air will be described. The filter device 20 is arranged in the middle of the intake duct 3 and is composed of a water sprinkling portion 11 for sprinkling water in the air flow path and an axial fan portion 16 for generating an air suction force.

As shown in FIGS. 2, 3 and 4, the water 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 this example, four steps, are provided on the outer peripheral side surface thereof. The annular groove 21 having a U-shaped cross section is formed so that its position is different from each other in the height direction (air passage direction) of the sprinkling portion 11. 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 periphery of the lower end of the lowermost annular groove 21, and 90 is provided on the outer edge of the upper surface of the shelf 22.
Four columns 23 are erected at every angle. An annular frame 24 is connected to the top of the pillar 23. Shelves 22, columns 2
3 and the outer surface of the annular frame 24 have a mesh portion 25.
Is attached so as to cover the entire circumference of the annular groove 21. For example, a cloth filter,
A material such as wire mesh or sponge is selected.

An axial fan section 16 is provided inside the ventilation hole 26 of the water sprinkling section 11. This axial fan unit 16
Is composed of a connecting portion 18 arranged at the center of the vent hole 26 and seven blades 17 radially formed from the connecting portion 18. By connecting the tips of the blades 17 to the inner wall surface of the vent hole 26, the axial flow fan portion 16 and the water sprinkling portion 11 are connected.
And are configured as one. The axial fan unit 16 generates a suction force that causes air to flow upward from below by the rotation of the sprinkler unit 11.

As shown in FIG. 5, the connecting portion 18 is connected to the motor 13
The sprinkler 11 is fixed to the rotary shaft 13a of the
Is placed within. Further, the exhaust duct 6 is arranged inside the ventilation hole 26 of the water sprinkling portion 11, and the lower end opening portion 15 thereof is located close to the upper side of the axial flow fan portion 16.

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 exhibited even when the motor 13 is driven at a relatively low speed.

Further, a top plate 31 is formed so as to project horizontally along the outer peripheral surface of the exhaust duct 6 with the same width. 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 peripheral surface of the exhaust duct 6. This prevents water droplets from being sucked into the exhaust duct 6 along the lower surface of the top plate 31 and from being mixed with water in the discharged air. Further, the top plate 31 is provided with a discharge hole 31a for supplying water just above the annular groove 21 of the water sprinkling portion 11.

The water supply means for supplying water to the filter device 20 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 the annular groove 21 of the sprinkler 11.
Water is supplied to the tank 4, one end of which is connected to the discharge hole 31a (FIG. 5) of the top plate 31 and is located directly above the annular groove 21, and the other end of which is connected to the tank 4 via the pump 33. To be done.

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.

A 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. .

Next, the water receiving plate portion 14 for separating the water sprayed from the water spray portion 11 and the air sucked from the outside (air-water separation) will be described. As shown in FIG.
As shown in FIG. 5, a circular water reservoir 51 is recessed in the center thereof. A plurality of arcuately curved guide vanes 52 are arranged so as to surround the water reservoir 51 so as to form a spiral shape at equal intervals. The inner end of the guide blade 52 is the water reservoir 51.
Of the sprinkler 11 and its upper end is arranged close to the lower surface of the sprinkler 11 as shown in FIG. 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. 6, 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.

A control unit 19 is arranged between the partition plate unit 12 and the upper plate surface of the cabinet 5.
The operation of each part of the air cleaning device 1 described above is controlled by.

The operation of the air cleaning device 1 constructed as above will be described below. When the power is turned on and the start of the air cleaning process is instructed, the water sprinkling unit 11 and the pump 33 are rotationally driven by the motor 13. At this time,
Since the axial fan unit 16 provided in the sprinkler unit 11 also rotates at the same time, the outside air is sucked in 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 unit 36 in the tank 4 by the pump 33 that is driven to rotate, and the tube 4
As shown in FIG. 5, 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 is stored in the annular groove 21 and is scattered to the outside (annular direction) of the annular groove 21 by the centrifugal force generated by the rotation of the sprinkler 11. 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. Also, the annular groove 21
Since the water is formed stepwise, the water is sprayed substantially evenly in the height direction of the water spraying section 11.

The scattered water passes through the mesh portion 25.
At this time, water droplets are subdivided into mist-like water, which is ejected into the intake duct 3 to form a water film. The air sucked through the intake duct 3 passes through this water film, so that 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 the water passes through the mesh portion 25, the water is scattered substantially uniformly. In addition, the upper opening of the mesh portion 25 has a top plate 31 and ribs 57.
Since it is blocked by, the air does not flow into the inside of the mesh portion 25, and the air passes through the outside of the mesh portion 25. 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. 6, air and water are guided to the central water reservoir 51 along the guide blades 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. Air forms a vortex in the water reservoir 51, and the flow collects water toward the inner wall surface and discharges it from the drain hole 53.

This water flows through the drain groove 54 shown in FIG. 1 and is collected in the collecting portion 34 of the tank 4 through the drain 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.

The air purifying device 1 purifies the air by adsorbing dust in the air to water.
Costs can be reduced because consumables such as filters are not required.

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

Furthermore, in the filter device 20 according to the present invention, 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, it is possible to increase the size of the sprinkler unit 11 and improve the air cleaning efficiency.

The axial fan unit 1 is provided inside the sprinkler unit 11.
Since 6 is provided and a fan is not required as a separate component, the device can be downsized and the configuration can be simplified. Since there is no need to separately provide a fan, there are less restrictions on the air flow path design, and it becomes possible to arrange the flow path with more emphasis on air circulation.

FIG. 7 shows the structure of an air cleaning device 51 according to a second embodiment of the present invention. This air purifier 6
In addition to the configuration of the air cleaning device 1 (FIG. 1) described above, a fan 1 is provided at a connecting portion between the vertical portion 6a and the horizontal portion 6b of the exhaust duct 6. This fan 62 is the motor 1
It is attached to the rotating shaft 13a of No. 3 and is located right above the axial fan unit 16.

The operation of the air cleaning device 51 is the same as that of the air cleaning device 1 (FIG. 1) described above, but the axial fan unit 1 is used.
In addition to 6, the fan 62 is separately provided, so that the suction force of air can be further improved. Furthermore, the flow of air generated by the rotation of the fan 62 gives a rotational force to the axial fan unit 16, and the driving force for maintaining the rotation of the filter device 20 is reduced. Therefore, it is possible to use an inexpensive motor 13 having a small driving force, and it is possible to reduce the cost.

The filter device 20 can be applied to other devices that mix air and water, such as a humidifier.

[0043]

As described above, the present invention is a filter device which removes dust contained in air by letting inhaled air pass through a sprinkled water film. Having an annular groove having an opening, a water sprinkling part that is spun into the air passing through the outside of the groove by rotating and diverging water accumulated in the groove in an annular direction, and is formed inside the sprinkling part, Vents for guiding the air that has passed outside the groove,
It is characterized by comprising a fan for sucking air provided inside the vent hole.

Therefore, according to the present invention, by sprinkling water by the centrifugal force in a state where the water has spread to the annular groove of the sprinkling portion, the water can be sprinkled substantially uniformly over the entire circumference of the sprinkling portion, and When applied to a cleaning device, the air can be cleaned more effectively. Further, since the fan is attached to the inside of the water sprinkling portion, there are effects such that the device can be downsized, the configuration can be simplified, and the intake efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a first example to which a filter device 20 according to the present invention is applied.
FIG. 3 is a cross-sectional view showing the configuration of the air cleaning device 1 according to the embodiment of the present invention.

FIG. 2 is a perspective view showing a configuration of a filter device 20 according to the present invention.

3 is a cross-sectional view of the filter device 20. FIG.

FIG. 4 is a top view of the filter device 20.

FIG. 5 is a cross-sectional view showing the operation of the filter device 20.

FIG. 6 is a sectional view taken along line AA of FIG. 1;

FIG. 7 is a second view to which the filter device 20 according to the present invention is applied.
It is sectional drawing which shows the structure of the air purifying apparatus 61 which is an embodiment of this.

[Explanation of symbols]

 1,61 Air purifying device 3 Intake duct 4 Tank 6 Exhaust duct 7 Inlet port 8 Exhaust port 11 Sprinkling part 13 Motor 13a Rotating shaft 14 Guide vane 16 Axial flow fan part 20 Filter device 21 Annular groove 25 Mesh part 31 Top plate 32 Water supply Pipe 33 Pump 51 Water reservoir 62 Fan

Claims (3)

[Claims] 1. A filter device for removing dust contained in air by passing inspired air through a sprinkled water film, the filter device having an annular groove having an opening at an upper portion thereof. , A water sprinkling part which is rotated and diverges water accumulated in the groove in an annular direction to be dispersed in the air passing through the outside of the groove, and formed inside the water sprinkling part and passed through the outside of the groove. A filter device comprising: a ventilation hole for guiding air; and a fan provided in the ventilation hole for sucking air. 2. The plurality of annular grooves are provided stepwise,
The filter device according to claim 1, wherein the filter devices are arranged so that their positions are different with respect to the air passage direction. 3. The filter device according to claim 1 or 2, further comprising a mesh portion arranged around the plurality of annular grooves.