JPH09192436A - Air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently clean air over a wide range. SOLUTION: A centrifugal blower 18 is arranged in underwater in a tank 4. When the centrifugal blower 18 and an exhaust fan 2 are subjected to rotary driving, fresh air is sucked in through an air inlet duct 3. This air is discharged from discharging ports 26 on the side face of the centrifugal blower 18 rotating in underwater in the tank 4, and is forcibly passed through water and cleaned. The cleaned air rises in an air outlet duct 10, and is discharged to the outside from an air outlet 44 through the exhaust fan 2. Since this air cleaner 1 does not require consumables such as a filter, cost is lowered and air is cleaned over a wider range than that of an ion type air cleaner.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an air cleaning device. Specifically, the outside air that was sucked in was blown into the water from a blower that was driven to rotate in water, and the dust in the air was adsorbed to the water so that the air could be cleaned without using a filter. The present invention relates to an air cleaning device.

[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. Further, since the filter is filled with activated carbon, chemical fibers, etc. without a gap, the pressure loss is large, and a power source having a large capacity for sucking air is required, and the device becomes large in size.

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, according to the present invention, in an air purifying device for purifying air exhausted from the outside and discharging it, a tank for storing water for air cleaning and an inside of the tank. And an intake duct for injecting air from the intake duct and ejecting the same from the intake duct, and an exhaust duct for discharging the air passing through the water to the outside. It is characterized by that.

When the intake air jetting portion is rotationally driven, the air taken in through the intake duct is jetted from the intake air jetting portion in the water in the tank and is forcedly passed through the water. As a result, the dust and odor components contained in the air are removed by being adsorbed on the water, and the purified air is then discharged to the outside through the exhaust duct.

[0008]

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 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 with an open bottom,
An intake port 7 is provided on the middle side surface (left side in the figure),
An exhaust port 44 is provided on the upper side surface (upper right side in the figure). The lower opening 5a is closed by a removable bottom cover 34 as described later. This air purifier 1
Is for cleaning the air taken in through the intake port 7 and discharging it through the exhaust port 44, and its functions are roughly divided into intake, cleaning processing, and exhaust.

The intake passage of the air cleaning device 1 is formed by the intake duct 3. The horizontal plate portion 6 is for supporting the intake duct 3, and is attached to the middle portion of the cabinet 5 so as to cross the inside of the cylinder. A through hole 9 is provided at the center of the horizontal plate portion 6 so as to match the outer diameter of the intake duct 3, and a plurality of ventilation holes 11, 11 are provided on the outer peripheral side of the through hole 9 in the circumferential direction.
Are formed. These ventilation holes 11 and 11 are for passing purified air from the tank 4 as described later.

The intake duct 3 arranged in the center of the cabinet 5 is a cylindrical body bent in an L-shape, and the horizontal portion 3a is placed on the horizontal plate portion 6 and the vertical portion 3b is formed in the opening 8 thereof. Is supported by being inserted into the through hole 9 of the horizontal plate portion 6 with the side facing downward. The opening of the horizontal part 3a of the intake duct 3 is opened to the outside as an intake port 7 provided on the side surface of the cabinet 5, and the lower end opening 8 of the vertical part 3b is inserted into the insertion tube port 32 of the tank 4. Has been.

The cleaning process of the air cleaning device 1 is performed by the motor 13,
It is performed by the blower unit 16 and the tank 4. A motor support plate 12 is attached so as to cross the inside of the vertical portion 3b of the intake duct 3, and a motor 13 is attached and fixed to the upper surface side of the motor support plate 12 with the rotating shaft 15 facing downward. The motor support plate 12 is provided with a plurality of vent holes 14 for passing the sucked air in the circumferential direction. The rotating shaft 15 of the motor 13 is selected to have a length reaching the inside of the tank 4, and the blower unit 1 is attached to the tip of the rotating shaft 15.
6 is attached.

The blower section 16 includes a centrifugal blower (intake air jetting section) 18 for generating a suction force, and a centrifugal blower 18
And a tubular portion 17 that forms a flow path of air to the.

As shown in FIGS. 1 and 2, the tubular portion 17 is a cylindrical body having a diameter smaller than the inner diameter of the intake duct 3, and the tubular portion 1
Holding parts 21 and 21 at upper and lower portions so as to traverse the inside of 7.
Are formed. A through hole 22 matching the shape of the rotary shaft 15 is provided in the center of the holding portion 21, and four vent holes 23 for passing outside air are provided on the outer peripheral side of the through hole 22. .

The rotary shaft 15 is inserted and fixed in the through hole 22 of the holding portion 21, and in this example, the cylindrical portion 17 is attached to the position where it enters the inside of the intake duct 3 from the lower end opening 8. Therefore, two air passages are formed below the vertical portion 3b of the intake duct 3. That is, a flow path leading from the tubular portion 17 to the centrifugal blower 18 and a flow path leading to the inside of the tank 4 from the lower end opening 8 of the vertical portion 3b of the intake duct 3 without passing through the tubular portion 17.

The centrifugal blower 18 has a cylindrical portion 1 as shown in FIG.
It is a substantially conical hollow body integrally formed at the lower end of 7, and the whole is submerged in the water in the tank 4. As shown in FIG. 3, a plurality of blades 25 arranged in the circumferential direction at regular intervals are formed therein. The blade 25 is formed in an arc shape so that the front surface side 25a with respect to the rotation direction (counterclockwise direction) is curved. Further, a plurality of air flow paths formed between the blades 25 are opened by a jet port 26 on the side surface of the centrifugal blower 18.

On the other hand, the tank 4 shown in FIG. 4 and FIG. 5 has a cylindrical water storage portion 31 and a cylindrical insertion portion having a smaller diameter than the water storage portion 31 integrally formed on the upper surface of the water storage portion 31. It is composed of a tube mouth 32. The tank 4 is attached and fixed to the inner surface side of the bottom cover 34 so as to be detachable from the lower opening 5a (FIG. 1) of the cabinet 5.

Eight ribs 33, which are wall portions along the vertical direction in this example, are formed on the inner wall surface of the water storage portion 31 so as to project every 45 degrees. As will be described later, the ribs 33 serve as a resistance against the flow of water when the water in the water storage section 31 is agitated by the rotation of the blower section 16 and thus raise the water surface and generate water droplets (water droplets). It is for promoting. Further, the upper outer edge of the water storage section 31 is a curved surface 39 over the entire circumference. The curved surface 39 is for generating a vortex of the sucked air to prolong the contact time with water.

A disc-shaped bottom cover 34 is attached and fixed to the bottom surface of the water storage section 31, and the outer diameter of the bottom cover 34 is such that it can be fitted into the lower opening 5a of the cabinet 5 (FIG. 1). Is set to almost match. Although not shown, the bottom surface of the bottom cover 34 is formed with a recess or the like for being gripped by a finger when the bottom cover 34 is attached and detached.

The inside diameter of the insertion tube port 32 of the tank 4 is set to be approximately twice the outside diameter of the lower end opening 8 of the intake duct 3 as shown in FIG. 1, and the gap between the insertion tube port 32 and the intake duct 3 is It serves as an exhaust path for the air purified in the tank 4.

On the other hand, as shown in FIG. 6, a funnel plate portion 35 is attached at a position near the lower portion inside the cabinet 5 so as to horizontally partition the inside of the cylinder. The funnel plate portion 35 is a funnel-shaped partition plate that is gently inclined from the outer peripheral portion toward the circular opening 35 a in the center, and is for collecting the water droplets scattered from the tank 4 and guiding them to the tank 4.

A cylindrical insertion port 36 is formed on the lower surface of the opening 35a of the funnel plate 35. The inner diameter of the inserted cylinder port 36 is set to be slightly larger than the outer diameter thereof so that the insertion cylinder port 32 of the tank 4 can be inserted. Further, in order to facilitate the insertion of the insertion tube opening 32, an inclined surface 36a is provided along the entire circumference at the inner peripheral edge of the lower opening of the insertion tube opening 36, as shown in FIG.

As shown in FIG. 1, the insertion tube port 32 of the tank 4
Is inserted into the opening of the inserted cylinder port 36, and the bottom cover 34 attached to the tank 4 is fitted into the lower opening 5 a of the cabinet 5, whereby the tank 4 is mounted inside the cabinet 5. At this time, the O-ring 37 mounted on the inner peripheral wall surface of the inserted cylinder opening 36 comes into close contact with the outer peripheral surface of the insertion cylinder opening 32 to prevent water leakage. It should be noted that the tank 4 is previously stored with an amount of water such that the centrifugal blower 18 is completely submerged. This is to allow the air ejected from the centrifugal blower 18 to pass through the water.

The exhaust path for the purified air is the exhaust duct 10
Formed by A partition plate part 45 is attached above the exhaust port 44 so as to horizontally partition the inside of the cylinder of the cabinet 5, and the exhaust duct 10 is provided between the partition plate part 45 and the funnel plate part 35. The motor 43 is attached and fixed to the lower surface of the partition plate portion 45, and the exhaust fan 2 is attached to the shaft of the motor 43. A horizontal plate portion 41 is provided below the exhaust fan 2.
The horizontal plate portion 41 is provided with a vent hole 42 for sending air into the exhaust fan 2. Cabinet 5 corresponding to the exhaust direction of exhaust fan 2
An exhaust port 44 is provided on the upper side surface of the.

Between the partition plate portion 45 and the upper surface of the cabinet 5, there is arranged a control portion 46 composed of electronic parts for performing various controls of the air cleaning device 1, a printed circuit board and the like.
On the upper surface of the cabinet 5, various switches 47, an indicator lamp 48 for indicating an operating state, and the like are provided.

Next, the operation of the air cleaning device 1 according to the present invention will be described. The air cleaning device 1 has two types of operation modes, a large air volume operation and a silent operation. First, the large air volume operation mode will be described below.

In FIG. 7, when the large air volume operation mode is selected by the switch 47, both the motors 13 and 43 are driven. As a result, both the centrifugal blower 18 and the exhaust fan 2 are rotationally driven, and an air flow is created from the intake duct 3 side to the exhaust duct 10 side. As a result, external air containing dust and the like is sucked from the intake port 7 and sent to the tank 4 and the centrifugal blower 18 through the intake duct 3.

As shown in FIGS. 7 and 8, in the tank 4, water in the tank 4 is agitated by the centrifugal blower 18 rotating counterclockwise (FIG. 3), and a vortex flow is generated around the centrifugal blower 18. The water surface of this vortex is inclined around the centrifugal blower 18, and many splashes (water droplets) are generated from the water surface. At this time, the rib 3 on the inner wall surface of the water storage section 31
3 becomes a resistance to the eddy current, raises the height of the water surface, and promotes the scattering of water drops.

A part of the air sent through the intake duct 3 passes through the inside of the tubular portion 17 and is sent to the centrifugal blower 18,
The remaining air flows from the lower opening 8 of the intake duct 3 to the tank 4
Is sent directly to the inside of.

The air sent into the centrifugal blower 18 passes between the blades 25 and is ejected from the ejection port 26 on the side surface.
It becomes a bubble and rises up in the vortex. At this time, dust and odor components contained in the air are adsorbed to the water, and the dirty air is cleaned.

On the other hand, the air sent directly into the tank 4 from the lower end opening 8 of the intake duct 3 is forcibly brought into contact with the water surface of the vortex and the splashed water droplets, so that dust and odor components contained in the air are It adheres to the scattered water droplets and cleans the dirty air here as well.

At this time, the height of the water surface is raised due to the resistance of the rib 33 to the vortex flow, and more water droplets are scattered from the water surface, so that the contact area between water and air is increased and the air cleaning effect is enhanced. To be

The purified air passes between the insertion cylinder port 32 and the intake duct 3, rises in the exhaust duct 10, and is discharged to the outside from the exhaust port 44 via the exhaust fan 2.

As described above, the air purifying device 1 removes dust contained in the air by ejecting the air toward the water from the centrifugal blower 18 which is rotationally driven in the water.
Air can be efficiently cleaned with a simple configuration.

Next, the operation in the silent operation mode will be described. The silent operation mode is for cleaning the air while reducing the volume and power consumption during operation as compared with the large air volume operation mode described above. In FIG. 9, when the silent operation is selected by the switch 47, only the motor 43 is driven and the motor 13 is not driven. As a result, only the exhaust fan 2 is rotationally driven to generate a suction force.

External air containing dust and the like is sucked from the intake port 7 by the suction force of the exhaust fan 2, and this air is sent into the tank 4 from the lower opening 8 of the intake duct 3. At this time, since the centrifugal blower 18 is stopped, the suction force is not generated and the air does not flow into the tubular portion 17.

The air sent into the tank 4 is forcibly brought into contact with the water surface, and dust and odorous components contained in the air are adsorbed and removed by the water. At this time, the water storage section 31
A flow of air is formed along the curved surface 39 at the upper part of the to generate a vortex, and the dirty air comes into contact with the water surface repeatedly, so that the cleaning effect can be enhanced. The purified air passes between the insertion cylinder port 32 and the intake duct 3, rises in the exhaust duct 10, and is discharged to the outside from the exhaust port 44 via the exhaust fan 2.

The blower section 16 is rotationally driven for a fixed time, for example, every 30 minutes for 5 seconds to stir the water in the tank 4. As a result, the dust or the like floating on the water surface can be diffused into the water, and the water surface with less dirt can be brought into contact with the air, the cleaning action can be maintained for a long time, and the deodorizing effect in the room is enhanced.

As described above, the air purifying apparatus 1 can be operated by selecting the large air volume operation mode and the silent operation mode. Since the large air volume operation mode allows the outside air to pass directly into the water, it has a higher air cleaning effect than the silent operation mode. Therefore, the large air volume operation mode is suitable when the air in the room is extremely dirty.

On the other hand, in the silent operation mode, since the centrifugal blower 18 in water is not driven to rotate, the cleaning effect is inferior to that in the large air volume operation mode, but noise during operation is small and power consumption is small. Therefore, the silent operation mode is suitable when the air in the room is not so dirty or when it is continuously used for a long time.

In this air purifying apparatus 1, the centrifugal blower 18 and the exhaust fan 2 also have a function of generating a forced air circulation route to the inside and outside of the air purifying apparatus 1, so that the air purification in the room is promoted. Moreover, since the external air is forcibly sucked by the centrifugal blower 18 or the exhaust fan 2 and is cleaned and discharged, a wide range of air can be cleaned. When the water stored in the tank 4 becomes dirty, it is sufficient to remove the tank 4 and replace the water as shown in FIG. 6, and maintenance is extremely simple and inexpensive.

[0042]

INDUSTRIAL APPLICABILITY As described above, the present invention is an air cleaning apparatus for cleaning and exhausting air sucked from the outside, a tank for storing water for air cleaning, and a tank for storing the water for cleaning the air and submerged in water. It is provided with an intake air ejecting portion which is driven to rotate in a submerged state, inhales air from an intake duct and ejects it in water, and an exhaust duct for ejecting air passing through the water to the outside.

Therefore, according to the present invention, unlike a filter type air cleaning device, consumables such as a filter are not required, so that the cost can be reduced and the air can be cleaned over a wider range than the ion type air cleaning device. It is possible to do so.

[Brief description of the drawings]

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

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

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a side sectional view showing a configuration of a tank 4.

FIG. 5 is a sectional view taken along line CC of FIG. 4;

FIG. 6 is a side sectional view for explaining attachment / detachment of the tank 4.

FIG. 7 is a side sectional view showing an operation when the large air volume operation mode is selected.

8 is a sectional view taken along the line DD of FIG. 7;

FIG. 9 is a side sectional view showing an operation when a silent operation mode is selected.

[Explanation of symbols]

 1 Air Cleaner 2 Exhaust Fan 3 Intake Duct 4 Tank 5 Cabinet 7 Inlet 10 Exhaust Duct 13 Motor 16 Blower Part 17 Cylinder 18 Centrifugal Blower 31 Water Storage 32 Insert Cylinder 33 Rib 34 Bottom Cover 36 Inserted Cylinder 39 Curved Surface 44 Exhaust port 46 Control unit

Claims (3)

[Claims] 1. An air purifying device for purifying air exhausted from the outside and exhausting the air, a tank for storing water for air cleaning, and a rotary drive in a state of being disposed in the tank and submerged in water. An air purifying apparatus comprising: an intake air ejecting unit that inhales air from an intake duct and ejects the air underwater; and an exhaust duct for ejecting the air passing through the water to the outside. 2. The air cleaning apparatus according to claim 1, wherein the intake air jetting portion is a centrifugal blower that jets air radially from the center of rotation. 3. The air cleaning apparatus according to claim 1, wherein a plurality of ribs for stirring water are formed on the inner wall surface of the tank so as to project therefrom.