JPH07269902A - Air filter of air conditioner - Google Patents

Abstract

PURPOSE:To advance space-saving, high efficiency, lowering of cost, ease of replacement, and saving of resources while it is seen to that the product can easily be set in existing equipment. CONSTITUTION:A filter body 7 is enclosed at the sides with a frame 8 to form an integral air filter A, which can be interposed between flanges 3, 4 respectively of ducts 1, 2. The filter body 7 is formed by sandwiching an activated-carbon filter layer 11 between two cottonlike filter layers 9, 10 and by covering the two outer sides respectively with nets 12, 13 and as an integral body by being sewn together with a thread. The texture of the cottonlike filter layers 9, 10 is given a density gradient having greater density downstream. A germicidal lamp 40 is provided on the upstream side of the filter body 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air filter which can be installed in a joint of a duct of an air conditioner.

[0002]

2. Description of the Related Art Conventionally, in an air conditioner used at home or office, in order to clean the air,
A box that contains a filter is connected to a duct from an air conditioner so that air is filtered, or a net is installed at the intake or outlet of the air conditioner to filter air. There is something I did.

There is also a filter in which activated carbon fibers are used for deodorization, or static electricity is used to adsorb and remove fine particles in the air.

[0004]

However, in the case where the filter is housed in the box, there is a limit to the installation because the box takes up space, and it is assumed that the box is integrated with the air conditioner body. However, since the space of the filter portion is added, the volume of the air conditioner itself becomes large, so that the installation is limited. Also, since the filter part is built in the box, it is troublesome to replace and maintain the filter.

[0005] Further, in the case where a net is stretched over the suction port or the air outlet, there is a problem that the installation space is small, but the filtering performance is insufficient, and fine particles and odors in the air cannot be removed.

The activated carbon fiber filter is expensive because it requires a large-scale manufacturing facility and sophisticated manufacturing technology.
A device that adsorbs and removes fine particles by static electricity has a drawback that it requires an installation space, requires a separate high-voltage power supply, has a complicated structure, and is expensive.

[0007]

According to the present invention, an outer periphery of a filter body is surrounded by a frame which conforms to a mating surface shape of a duct for circulating air to form an integral air filter. The present invention provides an air filter for an air conditioner, characterized in that it can be interposed between joints of ducts.

In the filter body, an activated carbon filter layer is sandwiched between two cotton-like filter layers to form a filter body, and both sides of the filter body are covered with a mesh to form a mesh with each filter layer. The body and the body are integrally sewn together with a thread-like body, the filtration structure of the cotton-like filtration layer has a dense density gradient on the downstream side, and two mesh-like bodies are provided on one side of the filter body. Placed a pre-filter that is integrally configured with a frame body, the above filter body
Another feature is that the sterilizing lamp 40 is provided on the upstream side of (7).

Further, the present invention is also characterized in that the above-mentioned air filter is attached to a suction port of a ceiling-embedded cooling and heating air conditioner in place of a duct joint.

[0010]

Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows a duct of an air conditioner equipped with an air filter A according to the present invention,
Reference numerals 1 and 2 denote upstream and downstream ducts that are connected to the air conditioner, respectively, and the connecting portion J of each duct 1 and 2 has a substantially flange-like joint 3 on the outer surface of the end of each duct 1 and 2. , 4 are formed, and the air filter A is clamped and fixed between the joints 3 and 4 by the tightening bolts 5 extending over the joints 3 and 4.

The air filter A, as shown in FIG.
It is composed of a filter body 7 and a frame body 8 surrounding the outer periphery thereof.

The filter body 7 comprises an upstream cotton-like filtration layer 9
And the downstream cotton-like filtration layer 10, an activated carbon filtration layer 11 formed of innumerable activated carbon particles is sandwiched, and the mesh body 1 is provided on both sides of the activated carbon filtration layer 11.
2, 13 are laminated, and the laminated body is sewn together with the thread-like body 14 to form an integral substantially flat plate-shaped filter body 7
Are configured.

The cotton-like filtration layers 9 and 10 are made of plant fibers such as cotton, hemp and palm, animal fibers such as cotton and animal hair, synthetic fibers such as polyester and nylon, asbestos and glass wool. A fibrous substance such as a mineral fiber or a metal fiber such as metal wool is laminated in a mat shape to form a sheet, which is cut into a shape that can be fitted into a frame body 8 described later.

In particular, each of the cotton-like filtration layers 9 and 10 gradually increases in the degree of denseness toward the downstream side and forms a dense density gradient on the downstream side.

As the mesh bodies 12 and 13, coarsely woven cloth, plastic mesh, metal mesh, punching metal or expanded metal can be used.

The filament 14 may be made of animal or vegetable fiber, synthetic resin thread, thin metal filament, glass thread, or the like.

The cotton-like filtration layers 9 and 10 and the reticulate body 12 and 1
3. By using a mineral or metallic non-combustible material for the filaments 14, it is possible to prevent a fire hazard.

The outer periphery of the filter body 7 is surrounded by a frame body 8 shown in FIGS. 2 and 4, and the frame body 8 has a member 15 having a substantially U-shaped cross section with an opening inside.
The filter body 7 and the frame body 8 are integrally formed by forming the filter body 7 and the frame body 8 so as to have a shape corresponding to 3 and 4, and sandwiching the outer peripheral portion of the filter body 7 inside the opening.

Further, as shown in FIG. 4, the member 15a on one side of the frame body 8 can be detached or the frame body 8 can be disassembled and assembled, so that only the filter body 7 can be replaced. .

The frame 8 is formed by bending a sheet metal,
It can be easily manufactured by processing from an aluminum or plastic extruded material having a U-shaped cross section.

In FIG. 2, reference numeral 16 is a pre-filter, which is arranged upstream of the air filter A and has two coarse nets 17 and 18 stretched over the same frame 8a. The nets 17 and 18 are fixed to the frame 8a with packing materials 17a and 18a.

As the net, a wire net, a plastic net-like molding or the like can be used, and it is desirable that the net has a rigidity that does not bend due to the air flow in the duct.

Further, in FIG. 1, reference numeral 40 denotes a sterilizing lamp, and ultraviolet rays emitted from the sterilizing lamp 40 sterilize the air flowing in the duct. 41 is a germicidal lamp to prevent damage
It is a fine wire mesh surrounding the outer circumference of 40, and 42 is a transformer box.

FIG. 5 shows an air conditioner 20 to which the air filter A of the present invention is applied. An air conditioner main body 21 is installed at the bottom of a building 23, and a cooling tower 22 is installed on the roof. Main body 21 and suction port 25 and outlet port 26 provided in each room of building 23
And the forward and return ducts 27 and 28, respectively.

In such an air conditioning equipment 20, the air filter A of the present invention is interposed between the joints 3 and 4 of the connecting portions J of the forward and backward ducts 27 and 28 to purify the circulating air. be able to.

That is, as shown in FIGS. 1 and 2, the filter body 7 and the pre-filter 16 are arranged such that the pre-filter 16 is located on the upstream side and the filter body 7 is located on the downstream side. Interposed between 4 and both joints 3,4
By tightening and fixing with the tightening bolts 5 spanning over, air leakage from the joints 3 and 4 is prevented.

The embodiment of the present invention is configured as described above, and when the air conditioning equipment 20 is started, the air conditioner body 21 is conditioned to the proper temperature and humidity by the heat exchange with the cooling tower 22. Air is blown into each room from the air outlet 26 through the outward duct 27.

Further, the air in each room is circulated from the suction port 25 to the air conditioner main body 21 via the return duct 28, is air-conditioned again, and is supplied to each room 24.

The air circulating in the ducts 1 and 2 is filtered by the air filter A interposed in the joints 3 and 4.

That is, from the air flowing into the pre-filter 16 and the filter body 7 from the upstream side, first, large particles such as dust are removed by the pre-filter 16, and then small particles such as dust are removed by the filter body 7. As a result, clean air will flow to the duct on the downstream side.

In particular, the activated carbon filter layer 11 is provided on the filter body 7.
Since it contains, it is possible to effectively adsorb and remove odors in the air, cigarette smoke, harmful gases, fine particles and the like.

The outer surface of each of the cotton-like filtration layers 9 and 10 is a net-like body.
Covered with 12,13 protects the outer surface and prevents fibers from separating and dissipating into the air.

In particular, since the filtration tissues of the cotton-like filtration layers 9 and 10 have a dense density gradient on the downstream side, dust fine particles are not limited to the surface of the cotton-like filtration layers 9 and 10, Since it will be trapped inside the tissue as well, clogging is less likely to occur, and the amount of trapped particulates will increase, so that the replacement period of the air filter A can be extended.

With respect to the above-mentioned density gradient, since the filter body 7 is integrally sewn with the filaments 14, the central portion of the filter body 7 is prevented from bulging, and the filter body 7 is prevented from swelling.
This prevents the density gradient from being disturbed due to the deformation of the shape.

Since the air filter A is interposed between the joints 3 and 4 of the ducts 1 and 2 and is tightened and fixed by the tightening bolt 5, the space for installing the filter is not required. , It can be easily installed in the duct of the existing air conditioning equipment.

Further, the air filter A functions as a packing to prevent air leakage, and at the same time, it is possible to absorb the vibrations of the ducts 1 and 2 and maintain quietness.
Since 9, 10 themselves absorb the sound, it is possible to mute the operation sound of the air conditioner body 21 and the sound of passing air.

Further, since at least a part of the frame body 8 can be disassembled, only the filter body 7 is replaced and the frame body 8 is replaced.
Since it can be reused, it saves resources, and since the filter body 7 is integrally sewn with the thread 14,
The replacement work is easy. Such an air filter A
Can be installed on either side of the round trip as long as there are joints 3 and 4, and can also be installed at the outlet 26 and the intake of fresh air.

Further, the downstream cotton-like filtration layer 10 of the filter body 7 may be impregnated with a liquid fragrance or embedded with a solid fragrance to perfume the air blown into the room from the outlet 26. it can.

6 and 7 show an embodiment in which the air filter A of the present invention is applied to a ceiling-embedded cooling and heating air conditioner 30, 31 is a case, 32 is an electric fan, 33 is a suction port, 34 is an air outlet, and 35 is a heat exchange part, and a negative pressure is generated by the electric fan 32, and the air filter A is introduced from the suction port 33.
While inhaling the air in the room while cleaning the air with
By blowing the air into the room from the air outlet 34 with an appropriate temperature at 35, it is possible to perform air conditioning and cleaning of the room, and like the above-mentioned one provided at the connecting portion of the duct, odor, cigarette smoke, It is possible to effectively adsorb and remove harmful gases, fine particles, etc., and it is difficult to cause clogging, and the replacement period of the air filter A can be extended. Furthermore, the air filter A is a ceiling-embedded type. Air conditioner for cooling and heating 30
Since the air filter A is attached to the suction port 33 on the lower surface, the air filter A can be easily replaced and maintained.

In the figure, 36 is a building frame, 37 is a hanging bolt for mounting, 38 is a ceiling plate, and 39 is a decorative panel on the lower surface of the cooling / heating air conditioner 30.

[0042]

According to the present invention, the outer periphery of a filter body having a substantially flat plate shape is surrounded by a frame body that conforms to the mating surface shape of the joint of the duct that allows air to flow, and the filter body is ducted through the frame body. Since it can be inserted between the joints, it does not require a space for installing a filter,
Also, the installation and replacement work of the air filter becomes easy.

In particular, since no space is required, it can be easily additionally installed in the existing air conditioning equipment.

Further, the filter body is formed by sandwiching an activated carbon filter layer between two cotton-like filter layers to form a filter body, and both sides of the filter body are covered with a mesh body, and the filter body is formed by a filament. Since the main body and the mesh body are integrally sewn together, it is possible to prevent performance deterioration due to the collapse of the shape of the filter body. Furthermore, when replacing the air filter, only the filter body is replaced and the frame body is reused. be able to.

Further, by disposing a pre-filter in which two reticulate bodies are integrally formed by a frame body on one side of the filter body, large particles in the air are trapped before reaching the filter body, Along with extending the life of the main body, it is possible to protect the filter main body, and by disposing a sterilizing lamp on the upstream side of the filter main body, it is possible to sterilize the air flowing in the duct and improve the hygiene condition. In addition, the activated carbon filtration layer of the filter body adsorbs and removes the ozone odor generated by ultraviolet rays from the germicidal lamp,
It is possible to prevent discomfort caused by ozone odor.

[Brief description of drawings]

FIG. 1 is a perspective view of a duct equipped with an air filter according to the present invention.

FIG. 2 is a cross-sectional explanatory view of an air filter and a duct.

FIG. 3 is a perspective view of a filter body.

FIG. 4 is an exploded perspective view of an air filter and a duct.

FIG. 5 is an explanatory view of air conditioning equipment.

FIG. 6 is an explanatory cross-sectional view of a cooling / heating air conditioner to which the air filter of the present invention is applied.

FIG. 7 is a perspective view of the same.

[Explanation of symbols]

 A Air filter 1 Duct 2 Duct 3 Joint 4 Joint 7 Filter body 8 Frame 9 Cotton-like filter layer 10 Cotton-like filter layer 11 Activated carbon filter layer 12 Net-like body 13 Net-like body 14 Filament 16 Pre-filter 17 Net 18 Net 40 Sterilizing lamp

Claims (6)

[Claims] 1. The filter body (7) is surrounded by a frame body (8) which conforms to the shape of the mating surfaces of the joints (3) and (4) of the ducts (1) and (2) through which air flows. Configure the air filter (A) for the duct and connect the air filter (A) to the duct (1) (2) joint.
(3) An air filter for an air conditioner, characterized in that it can be interposed between (4). 2. The filter body (7) is formed by sandwiching an activated carbon filtration layer (11) between two cotton-like filtration layers (9) (10) to form a filter body (7). Both sides of the body (7) are covered with mesh bodies (12) (13), and each filtration layer (9) (10) (11)
2. The air filter for an air conditioner according to claim 1, wherein the mesh body and the mesh bodies (12) and (13) are sewn together with the thread body (14) to be integrally formed. 3. The filter tissue of the cotton-like filter layer (9) (10),
The air filter for an air conditioner according to claim 1, wherein the downstream side has a dense density gradient. 4. A pre-filter (16) in which two nets (17) (18) are integrally formed by a frame (8a) is arranged on one side of the filter body (7). An air filter for an air conditioner according to claim 1. 5. The air filter for an air conditioner according to claim 1, wherein a germicidal lamp (40) is arranged on the upstream side of the filter body (7). 6. The air filter (A) according to claim 1,
An air filter for an air conditioner, characterized in that it is attached to a suction port (33) of a ceiling-embedded cooling and heating air conditioner (30) instead of between the joints (3) and (4) of the ducts (1) and (2).