JP2574603Y2 - Air cleaner - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifier having a humidifying function.

[0002]

2. Description of the Related Art A conventional small household air cleaner generally uses a dust collecting filter such as an electric dust collecting filter or a mechanical filter. In addition, an ultrasonic method is mainly used as a humidifier. In order to keep indoor air clean and at an appropriate humidity, it is necessary to install both an air cleaner using the above-mentioned dust collection filter and an ultrasonic humidifier. It is also conceivable to combine the two.

A cyclone method has been conventionally known as one type of dust collecting apparatus. An indoor atmosphere management apparatus using a gas-liquid spray contact device having a liquid spray nozzle provided inside a cyclone structure has been proposed. (See Japanese Patent Publication No. 57-55117). This indoor atmosphere management device is mainly used for managing the atmosphere in a large room such as a refrigerated warehouse, and generally, a large number of liquid spray nozzles are provided at the center of a cylindrical main body (cyclone structure main body).
A recirculation type gas-liquid spray contact device is provided by providing a circulating air inlet pipe closed on the side wall of the main body and an air discharge pipe penetrating vertically in the center of the main body. The air in the room is circulated, and the temperature of the gas is directly controlled by the liquid spray in the reflux-type gas-liquid spray contact device. This device has an indoor temperature control function, but also has a function as an air purifier capable of adjusting humidity.

[0004]

The combination of the air purifier using the dust collecting filter and the ultrasonic humidifier, even if they are used separately or when they are combined, are simply used. In addition to having only the combined performance, the particle size of the droplets that can be generated by the ultrasonic method is said to be about 3 μm, and it is not possible to obtain sufficiently fine droplets. Cannot be high enough.

On the other hand, in a system using a gas-liquid spray contact device having a liquid spray nozzle provided inside a cyclone main body, the particle diameter of the liquid spray nozzle is, for example, 0.1 μm.
Since it is possible to generate droplets of sufficiently small size, the performance of increasing the humidity is high, but when the size is reduced for home use or the like, the air cleaning ability (dust collection performance) is lower than that of the filter system. . Also, JP-A-53-7878, "Dust removal method and
Fine device ", in front of the inlet pipe easy single filter surface and the blowing
Equipped with a fan, gas for dust removal is placed above the cyclone chamber.
And spray the liquid toward the introduced gas.
There is disclosed a dust removal device for removing fine particles contained in
You. This dust remover is a gas containing fine particles such as paint mist.
Spray liquid such as water toward
Attach it to the peripheral wall of the cyclone chamber and remove the attached fine particles.
The water flows along the inner wall of the Ecron room due to the downward discharge of water.
To remove fine particles contained in the gas.
However, liquid such as water sprayed from the spray pipe
The gas introduced into the upper part of the
A small part of the entire inner circumference of the chamber, ie the center of the cyclone chamber
The angle of view is at most 60 degrees
Therefore, liquid such as water is directed toward the entire inner circumference of the cyclone chamber.
The spraying efficiency is about 1/6 compared to when spraying the body.
There is only. For this reason, it is located in the center of the cyclone chamber
Water from the outlet pipe to the entire circumference of the room, for example, over the entire length of the pipe.
Sprayed water and gas when compared to the method of spraying
Only one place where the chance of contact with fine particles contained inside is very narrow
It is clear that the particle collection efficiency is
Nevertheless, it had a problem of being bad.
Also, water for atomization for collecting fine particles contained in the gas,
The water that causes the fine particles attached to the inner wall of the cyclone to flow down,
Feed into the cyclone chamber via separate pipes
Required, which complicates the piping structure and maintenance
It had problems such as difficulty. Even better
In addition, the dust collection filter at the front of the inlet pipe leading to the cyclone chamber
Because it is composed of a single filter, the cyclone chamber
Dust and fine particles that could not be collected by the filter
Cyclone that contains a large amount of
There was a problem of putting a burden on the room. Ma
In addition, the air exhausted from the cyclone chamber through the outlet pipe
Contains mist of water and water droplets.
Directly through the outlet pipe without separating water and water
Because it is configured to be discharged outside the cyclone room,
Water collected from the bottom of the
The amount is gradually reduced and must be replenished frequently
It had problems such as becoming difficult. In addition, Japanese Unexamined Patent Publication
No. 1-61609 “Super clean air method”
Equipment that collects dust with multiple filters
An arrangement is disclosed. However greens grounds, this thing is, just
Simply add glass wool to the open end of the tubular
From tenres wool, mesh material, filter material, etc.
Filter media, followed by activated carbon or other chemical
Or a filter with a sterilizer inserted using electrical means
Only shows the general structure of
Collection and reuse of liquid by dust collection and subsequent gas-liquid separation
Because it does not have a full-fledged air purifying means,
It was impossible at all to perform humidification. Even better
Japanese Patent Application Laid-Open No. Sho 64-67226 “Deodorizing device”
Cyclone structure downstream of the gas-liquid spray contact part
An apparatus provided with a gas-liquid separation unit is disclosed. I
However, this material is used to clean the air
The gas is exhausted from the top of the gas-liquid spray contact area, and the gas-liquid
In this configuration, the liquid is supplied to the vicinity of the top of the separation part.
The gas-liquid separator, which receives the supply of gas containing the body,
The direction in which the liquid separated from the gas
Higher occupancy density of separated liquid per unit space
The swirling force is at maximum and the liquid
Once released liquid in the top layer with the highest release ability
The gas also contains water again as it descends through the cyclone chamber.
It is clear that the gas-liquid separation effect is impaired by that much
And at the same time, again from the top of the cyclone
Poor discharge efficiency from outlet pipe, heavy and moist air separates gas and liquid
The department had issues such as stagnation. Ma
In addition, the gas-liquid spray contact part and the gas-liquid separation part share water collected at the bottom.
The water collected by the gas-liquid separator is not
Cooling water is effectively used
It had problems such as not being able to bottom out.

The present invention has been made in view of the above circumstances, and has as its object to provide a small-sized air purifier having sufficiently high air purifying ability and humidifying performance and which can be sufficiently applied to home use and the like. .

[0007]

Means for Solving the Problems To achieve the above object,
Therefore, the present invention provides a dust collection filter to remove dust contained in air.
Filter, an intake fan connected to the dust filter, and the intake fan.
Intake air tangentially from near the top by the air fan
And, either near the bottom of the air swirling downward along the cylindrical inner wall
Gas-liquid contact cyclone exhausted from
Pumping pipe, which is located almost at the center of the pump and forms a pumping path
And the liquid collected at the bottom of the gas-liquid contacting ecron is
A pump for pumping the liquid to the liquid pump, and
The pressurized liquid is transferred to the internal space of the gas-liquid contact cyclone.
A spray nozzle that sprays in a mist state,
Of saturated air and droplets entrained in the saturated air near the bottom
Is supplied tangentially from and swivels up along the inner cylindrical wall
Separates the droplets from the saturated air, accumulates at the bottom and saturates
A gas-liquid separation cyclone for exhausting air from near the top,
Swirling flow type located almost in the center of the gas-liquid contact cyclone
And a columnar material for formation.
You .

[0008]

In the above construction, the indoor air is sucked into the dust collecting filter by the suction force of the intake fan, and a certain amount of dust is removed. Then, the air is sucked into the gas-liquid contact cyclone.
In contact with the droplets ejected from the spray nozzle while rotating, dust in the air not removed by the dust collecting filter adheres to the droplets, agglomerates, and is separated and removed by centrifugal force.
Further, in the gas-liquid contact cyclone, the humidity of the air is increased (humidified) by contact with the droplet. Then gas-liquid separation
Excess water (droplets) that enter the cyclone and exceed the saturation amount at that temperature is separated and removed by centrifugal force. Accordingly, only substantially saturated air (air saturated with moisture) is discharged from the air discharge port.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. 1 and 2, reference numeral 1 denotes a gas-liquid spray contact portion. The gas-liquid spray contact section 1 has a liquid pumping pipe 3 which penetrates the bottom and rises vertically upward at the center of a cylindrical gas-liquid contact cyclone 2 having a cyclone structure.
A large number of spray nozzles 4 are radially attached to the pumping pipe 3. An intake fan 6 is provided in the middle of an intake pipe 5 tangentially connected to an upper side wall of the gas-liquid contact cyclone 2, and a dust collection filter 7 is provided on an inlet side of the intake fan 6.

A gas-liquid separation unit 9 is connected to the gas-liquid spray contact unit 1 through a communication port 8. This gas-liquid separation unit 9
In order to guide air spirally into the center of the cylindrical gas-liquid separation cyclone 10, a column 11 is vertically fixed as a column and an exhaust port 12 is provided on the upper end surface. Gas-liquid contact cycle
The liquid 2 and the gas-liquid separation cyclone 10 communicate with each other through a lower passage 14, and a pump 15 provided at the lower end of the liquid pumping pipe 3.
Is closed at the bottom of the gas-liquid separation cyclone 10. In addition, for the gas-liquid separation cyclone 10 ,
A water tank 17 is connected as a supplementary liquid supply tank .

An example of the dust filter 7 is shown in FIG.
The dust collecting filter 7 is a simple mesh-shaped pre-filter 20 for removing large dust. Although not shown, a charging unit 21 for discharging and charging dust in air passing through the discharge wire and the counter electrode plate, It incorporates an electrostatic filter 22 that is charged to the opposite polarity and adsorbs dust with electric force, an activated carbon filter 23 for deodorization, and the like. However, the structure of the dust collecting filter 7 is not limited to the electric dust collecting type filter shown in the illustrated example, but may be a thin filtering material such as filter cloth or filter paper or a dust collecting filter using only a filter filling material forming a filtration layer. In short, any type of dust collection method using a filter may be used.

In the above-described air purifier, room air passes through the dust collecting filter 7 to remove some dust. In this example, large dust is removed by the pre-filter 20, charged by the charging unit 21, and charged by the electrostatic filter 22.
And is deodorized by the activated carbon filter 23. The air that has passed through the dust collecting filter 7 is supplied to the gas-liquid spray contact portion 1 by the fan 6 through the air inlet pipe 5.
Sucked from the gas-liquid contact cyclone 2 in a tangential direction, is <br/> injected from the spray nozzle 4 is pumped by pump 15 at the same time descends while swirling inside the body 2 helically as indicated by arrow nebulized fine In contact with liquid droplets. As a result, dust not removed by the dust filter 7 adheres to the droplets, condenses, is removed by centrifugal force, and settles at the bottom of the gas-liquid contact cyclone 2. The air from which dust has been removed by contact with the droplets also flows from the tangential direction into the gas-liquid separation unit 9 through the communication port 8, and when the air spirally rises, the amount of saturation is reduced by the centrifugal force. Excess water that has passed is removed and settles at the bottom of the gas-liquid separation cyclone 10, and only substantially saturated air is discharged from the exhaust port 12. Then, the liquid dipping at the bottom of the gas-liquid spray contact section 1 and the bottom of the gas-liquid separation section 9 is pump 1
5 is pumped into lifting liquid pipe 3 by, Ru is circulated reused by being ejected from the spray nozzle 4. When the amount of liquid accumulated at the gas-liquid spray contact portion 1 and the bottom of the gas-liquid separation portion 9 decreases, the liquid is supplied from the water tank 17.

In the above-mentioned air purifier, after the dust is collected by the dust collecting filter 7, the dust is further collected by the gas-liquid spray contact portion 1 having the cyclone structure. Air purifying ability is obtained.

The spray nozzle 4 also takes into account the effect that the jetted droplet collides with the inner wall of the main body 2 to make it finer.
Since a droplet containing 70 to 80% of particles having a particle diameter of about 0.1 μm can be generated, humidification performance can be greatly improved as compared with an ultrasonic method in which the particle diameter is about 3 μm, for example.

The air entering the gas-liquid spray contact section 1 has a dust removal filter 7 from which some dust has been removed in advance .
Gas-liquid spray contact part 1 compared to the case without dust collection filter
The amount of dust entering is reduced. Therefore, of the droplets generated in the gas-liquid spray contact portion 1, the ratio of separation and removal in the gas-liquid spray contact portion 1 due to the adhesion of dust is small,
The ratio of being sent to the gas-liquid separation unit 9 as it is as clean droplets and discharged to the outside is increased. Therefore, the humidification performance is improved as compared with a conventional atmosphere management device having no dust collection filter.

Further, since the amount of dust entering the gas-liquid spray contact section 1 and the gas-liquid separation section 9 is reduced, the amount of circulating water used for liquid spray is reduced, and a high dust removal capability is maintained for a long time. can do.

Further, since the amount of dust entering the gas-liquid spray contact portion 1 and the gas-liquid separation portion 9 is reduced, the possibility that droplets having fine dust adhered to the outside are also reduced. The performance as an air purifier is improved.

In order to reduce the contamination of the circulating water,
A filter may be provided in the middle of circulation. In addition, a cooling device for cooling the circulating water may be provided, and the liquid may be sprayed with cold water to control the temperature.

[0019]

[Effects of the Invention] As described above, according to the present invention,
The air sucked into the dust filter by the suction force of the intake fan
After removing a certain amount of dust,
Ron sucked in and was sprayed from the spray nozzle while turning
Removed by dust filter by contact with droplets
The dust in the air that did not adhere to the droplets and aggregated, and centrifuged
Separation and removal by force and gas-liquid contact cyclone
Air is humidified during the gas-liquid contact process in
When supplied to the gas-liquid separation cyclone following the contact cyclone
In addition, excess water (liquid
Droplets) are separated and removed by centrifugal force, and almost saturated air (moisture is removed).
(Saturated air) only,
The air collected by the dust filter is further contacted with gas-liquid spray
Purification using only dust collection filter
Can obtain a sufficiently high air purification capacity compared to the law,
Droplets ejected from the spray nozzle are in gas-liquid contact cyclone
Considering the effect of miniaturization by colliding with the inner wall of the
Generates droplets containing 70 to 80% of particles with a diameter of about 0.1 μm
The particle diameter of which is, for example, about 3 μm.
Humidification performance is larger than that of ultrasonic method
Can be improved and enter the gas-liquid contact cyclone
The air is preliminarily dust-removed with a dust filter.
Gas-liquid contact compared to the case without a dust filter
Since the amount of dust entering the cyclone is decreasing,
Dust is attached to droplets generated in the gas-liquid contact cyclone.
Gas-liquid separation cycle with clean droplets
Of the dust discharged to the outside
Is very low, and the conventional
Improved humidification performance compared to atmosphere management devices
Gas-liquid contact cyclone and
Reduces the amount of dust entering the gas-liquid separation cyclone
Therefore, dirt of the circulating water used in the liquid spray is reduced, the length
Maintaining a high dust removal capacity over time.
At the same time, droplets with fine dust adhered to the outside
There is less danger of being discharged, and in this sense the air is clean.
It has excellent effects such as improved performance as a machine.

The gas-liquid contact cyclone and the gas-liquid
The separation cyclones are connected at their bottoms to each other,
Both are made to be supplemented and supplied from the common storage tank
From the gas used for dust collection by the gas-liquid contact cyclone
The liquid required for dust collection is stored in the common storage tank with the separation cyclone.
It can be efficiently collected as a body and reused cyclically.
If there is a shortage of liquid required for dust collection
In any case, immediately supply water from the liquid storage tank to the common storage tank.
And can be used for dust collection.
You.

The dust collecting filter is a pre-filter and a static filter.
At least two types of electric filter and activated carbon filter
, Which consists of multiple filters containing
Filter with dust collection effect according to dust contained in air
By using in combination, the gas-liquid contact cyclone
To reduce the dust collection burden on the gas-liquid separation cyclone.
Such as the ability to increase the cleanliness of the air
Play a fruit.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the air purifier of the present invention.

FIG. 2 is a plan view of the air purifier shown in FIG.

3 is a cross-sectional view of the dust filter shown in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Gas-liquid spray contact part 2 Gas-liquid contact cyclone 4 Spray nozzle 6 Intake fan 7 Dust collection filter 8 Communication port 9 Gas-liquid separation part 10 Gas-liquid separation cyclone 12 Exhaust port 15 Pump

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI B01D 46/12 B01D 46/12 47/00 47/00 B F24F 6/14 F24F 6/14 7/00 7/00 A (56 References JP-A-53-778 (JP, A) JP-A-61-61609 (JP, A) JP-A-64-67226 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB Name) B01D 50/00 B01D 47 / 00,47 / 06

Claims (3)

(57) [Scope of request for utility model registration] 1. A dust collecting filter for removing dust contained in air.
Filter, an intake fan connected to the dust filter, and the intake fan.
Intake air tangentially from near the top by the air fan
Air swirling down along the inner cylindrical wall
Gas-liquid contact cyclone exhausted from
Pumping pipe, which is located almost at the center of the pump and forms a pumping path
And the liquid collected at the bottom of the gas-liquid contacting ecron is
A pump for pumping the liquid to the liquid pump, and
The pressurized liquid is transferred to the internal space of the gas-liquid contact cyclone.
A spray nozzle that sprays in a mist state,
Of saturated air and droplets entrained in the saturated air near the bottom
Is supplied tangentially from and swivels up along the inner cylindrical wall
Separates the droplets from the saturated air, accumulates at the bottom and saturates
A gas-liquid separation cyclone for exhausting air from near the top,
Swirling flow type located almost in the center of the gas-liquid contact cyclone
An air purifier comprising a forming column . 2. The gas-liquid contact cyclone and the gas-liquid separation.
The cyclones are connected at their bottoms to each other,
The air purifier according to claim 1, wherein the liquid is supplemented and supplied from a common storage tank . 3. The dust collecting filter is at least two kinds of a pre-filter, an electrostatic filter, and an activated carbon filter.
The air purifier according to claim 1 , comprising a plurality of filters including: