JP2005049048A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate bacteria from a photocatalyst filter 7c and an electric dust collection device 1 at the same time by an ultraviolet lamp 6a. <P>SOLUTION: This air conditioner is so structured that a suction port and a blowout port are formed on a casing surface; a heat exchanger and a blast fan are installed in the casing; an air blast passage is formed between the suction port and the blowout port; heat of indoor air sucked from the suction port is exchanged; and thereafter the indoor air is delivered into a room from the blowout port. A deodorization filter by photocatalyst, and the electric dust collection device equipped with a discharge electrode, and a discharge counter electrode are installed in the air blast passage; the ultraviolet lamp is positioned between the deodorization filter and the electric dust collection device; and a photocatalyst layer is formed on the surface of the discharge counter electrode. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an air conditioner, and more particularly to deodorizing indoor air and collecting dust.

A conventional air conditioner sucks indoor air containing odor into the interior, and the sucked air is again discharged into the room through a heat exchanger, a deodorant irradiated with ultraviolet rays by an ultraviolet lamp, and a blower. Further, the deodorizing agent is composed of activated carbon having a titanium oxide photocatalyst layer formed on the surface, and the deodorizing effect can be maintained for a long period of time by decomposing the odor component adsorbed on the deodorizing agent with ultraviolet rays and the photocatalyst layer.
Some air conditioners were equipped with an electrostatic precipitator to remove fine dust and cigarette smoke in the air.
Japanese Patent No. 3122424

However, in this conventional air conditioner, the former obtains odor deodorization by adsorption and decomposition of odor components by the adsorbent and the photocatalyst, but the fine dust contained in the indoor air and the inorganic substance that is not decomposed by the photocatalyst There is a problem that the deodorizing performance deteriorates unless fine dust and inorganic substances are regularly removed, because fine dust and inorganic substances accumulate on the surface of the deodorizer while the deodorizing operation is continued. It was.
In the latter case, an electric dust collector attached to an air conditioner is the cause of the generation of a strange odor in the discharge counter electrode itself when there are many components such as cigarette smoke attached to the discharge counter electrode that remove cigarette smoke in the air. It was to become.

  This invention pays attention to this point, and in order to solve the above-mentioned drawbacks, a suction port and a blower outlet are provided on the surface of the casing, a heat exchanger and a blower fan are provided in the casing, and a blower passage is provided between the suction inlet and the blower outlet. In an air conditioner that exchanges heat between indoor air sucked from the suction port and then blows air into the room from the air outlet, an electric current collector provided with a deodorizing filter, a discharge electrode, and a discharge counter electrode by a photocatalyst in the air blowing path. A dust device is provided, an ultraviolet lamp is positioned between the deodorizing filter and the electrostatic precipitator, and a photocatalytic layer is formed on the surface of the discharge counter electrode.

  The deodorizing filter and the electrostatic precipitator are housed in a resin frame, the deodorizing filter has a non-woven fabric formed with a photocatalyst layer such as titanium oxide, and the acicular precipitator of the electrostatic precipitator has a discharge counter electrode. The photocatalyst layer is formed on the surface of the discharge counter electrode in a one-to-one correspondence with the hole, and a handle is provided at one end of the discharge counter electrode, and the handle is slid into and removed from the groove of the frame. A filter unit that can be freely mounted is provided.

According to the present invention, not only the odor component is decomposed by the photocatalyst and the ultraviolet lamp, but dust that cannot be captured by the deodorizing filter such as fine dust and cigarette smoke contained in the indoor air is sucked and accumulated in the discharge counter electrode. Bacteria mixed in can be killed with an ultraviolet lamp, and a single ultraviolet lamp can simultaneously irradiate the deodorizing filter and the electrostatic precipitator with ultraviolet rays, thereby providing an air conditioner with a higher air cleaning effect. At the same time, a photocatalyst layer is also formed on the discharge counter electrode surface of the electric dust collector, so that the odorous components such as cigarette smoke contained in the dust adhering to the discharge counter electrode are decomposed by the photocatalyst, so that air with a higher air purification effect It provides a harmony machine.
In addition, since the deodorizing filter, ultraviolet lamp, and electrostatic precipitator are installed in the space between the suction port and the heat exchanger, cleaning and other maintenance can be easily performed, and the heat exchanger can be located on the windward side of the heat exchanger. It is possible to reduce adhesion of odor components and dust to the exchanger.
In addition, the deodorizing filter, which is relatively heat-sensitive, is located on the leeward side of the ultraviolet lamp, and the electrostatic precipitator, which is relatively heat-resistant, is located on the leeward side of the ultraviolet lamp, making it safer against the heat generated by the ultraviolet lamp. An air conditioner can be provided.
Further, the discharge counter electrode can be easily attached and detached by a handle provided on the discharge counter electrode, and can be easily cleaned.

  All kinds of dust drifting indoors are captured by a deodorizing filter using a photocatalyst and a discharge counter electrode formed on the surface of the photocatalyst layer of the electrostatic precipitator, and an ultraviolet lamp and a photocatalyst provided between the deodorizing filter and the electrostatic precipitator. As a result, the deodorized filter and the discharge electrode are less frequently cleaned by sterilizing the collected garbage and decomposing odor components. It can be easily removed with the handle of the discharge counter electrode and can be easily cleaned.

In the following, an embodiment of the present invention will be described with reference to FIGS. 1 and 2. Reference numeral 1 denotes an electrostatic precipitator incorporated in a part of the ventilation path of the air conditioner 2, which is made of insulating plastic or the like. In the dust collecting frame 3, a discharge electrode 4 connected to the negative side of a DC power source of about 4000 volts and a discharge counter electrode 5 connected to the positive side of the DC power source are provided.
The frame 3 is divided into two on the left and right sides, and a discharge electrode 4 and a discharge counter electrode 5 are attached to each of them.

The discharge electrode 4 includes a discharge electrode substrate 4b parallel to the center of an aluminum frame 4a having a thickness of about 1 mm, and is provided with a pointed discharge needle 4c from the discharge electrode substrate 4b toward the leeward side. The claw 3a provided on the frame 3 is attached.
The discharge counter electrode 5 is provided with a plurality of holes 5a having a diameter of about 17 mm in the central portion of an aluminum flat plate having a thickness of about 1 mm, and the end 5b of the plate is covered with an insulating member such as a plastic that is relatively resistant to heat. In addition, a part of this insulating member is protruded to form a handle 5c, which can be easily attached and detached by sliding from below to the groove 3b provided on the inner side of the left and right and the center of the frame 3. The discharge needles 4c are provided in a 1: 1 ratio toward the center of the hole 5a.

The tip of the discharge needle 4c of the discharge electrode 4 is set so as to be positioned 1 mm to 5 mm above the center of the hole portion 5a of the discharge counter electrode 5 (2 mm upwind in this embodiment) when attached. As a result, the plate portion 5d of the discharge counter electrode 5 can also serve as a dust collecting portion, and only the discharge counter electrode 5 can be made detachable.
The surface of the plate portion 5d of the discharge counter electrode 5 is coated with a photocatalytic action so that a photocatalytic layer is formed on the surface of the plate portion 5d, and odor components such as cigarette smoke adhering to the plate portion 5d. Can be decomposed and removed by irradiation with the ultraviolet lamp 6a.
Further, a negative terminal 3c for connecting the discharge electrode 4 and the negative power source and a positive terminal 3d for connecting the discharge counter electrode 5 and the positive power source are provided on the side surface or the center of the dust collecting frame 3.

  A lamp unit 6 is provided on the front surface of the dust collecting frame 3, and a resin lamp frame 6b for attaching a cylindrical ultraviolet lamp 6a in a horizontally long manner is provided at the center of the lamp unit 6. The fixing means is fixed to the mounting hole 3e of the dust collecting frame 3, and the ultraviolet lamp 6a generates heat when turned on.

A deodorizing filter 7 is provided on the windward side of the front surface of the ultraviolet lamp unit 6, and is fixed to the mounting hole 6d of the lamp unit 6 by fixing means such as four claws 7b provided before and after the filter frame 7a. The photocatalyst filter 7c is formed by mixing a non-woven fabric or the like with an adsorbent such as activated carbon to form a photocatalyst layer such as titanium oxide. The photocatalyst filter 7c adsorbs odor components to deodorize the odor, and The odor component adsorbed by the adsorbent is decomposed by irradiating with UV light.
Further, since the adsorbent, non-woven fabric, etc. of the photocatalyst filter 7c are relatively weak against heat, they can be used more safely by providing them on the windward side than the ultraviolet lamp 6a that generates heat.
A handle 7d for attaching / detaching the deodorizing filter 7 is provided at the lower front portion of the filter frame 7a.

3f is an attachment leg protruding to the leeward side of the frame 3, and is inserted between the fin 8a or the heat exchange pipe 8b on the front surface of the fin tube type heat exchanger 8, and is attached to the heat exchanger. 8 is constituted by a front heat exchanger 8a inclined to the front side and a rear heat exchanger 8b inclined to the back side.
Since the electric dust collector 1, the lamp unit 6, and the deodorizing filter 7 are formed as a unit, the filter unit 9 is formed, so that assembly work and repair can be easily performed.

The air conditioner 2 constitutes the outer surface of the housing by a casing 10 on the back and a front panel 11 on the front, and an air inlet 12 is provided on the front and top of the front panel 11, along the back of the inlet 12. A mesh-like prefilter 13 for removing relatively large dust in the air is provided.
The heat exchanger 8 is provided on the lee of the prefilter 13, and a photocatalytic filter 7 c, an ultraviolet lamp 6 a, and the electrostatic precipitator 1 are provided above the prefilter 13 and the heat exchanger 8.

Reference numeral 14 denotes a drain tray that receives the condensed water generated in the heat exchanger 8 during the cooling operation, and receives the condensed water from the front drain tray 14a that receives the condensed water from the front heat exchanger 8c and the rear heat exchanger 8d. A rear drain pan 14b is provided.
The wall surface on the back side of the front drain plate 14 a and the front side wall surface of the rear drain plate 14 b also serve as a current plate for the blower fan 15.
The blower fan 15 is a cross-flow fan provided between the heat exchanger 8 and the casing 10, and sucks room air from the suction port 12 and blows it out from the blower outlet 16 provided at the lower portion of the front panel 11. 16 includes an up / down wind direction plate 17 and a left / right wind direction plate 18 for changing the direction of the blown air according to the preference of the user.

  As for the operation, if the air conditioner 2 is operated, the blower fan 15 and the compressor (not shown) start to operate, and the indoor air sucked from the suction port 12 is relatively large in the prefilter 13. After the dust is removed, a part of the air goes directly to the heat exchanger 8, and a part of the air passes through the photocatalyst filter 7c and the electrostatic precipitator 1 and is then heat-exchanged in the heat exchanger 8 and blown fan 15 The air is blown out into the room from the air outlet 16 via.

  At this time, if the ultraviolet lamp 6a and the operation device (not shown) of the electrostatic precipitator 1 are operated, the ultraviolet lamp 6a starts to light, and a direct current of about 4000 volts is applied between the discharge electrode 4 and the discharge counter electrode 5. A voltage is applied, so that a negative charge is generated when cigarette smoke in the air and small invisible dust pass between the discharge needle 4c of the discharge electrode 4 and the edge of the hole 5a of the discharge counter electrode 5. And is attracted to and adsorbed to the plate portion 5d on the back surface of the discharge counter electrode 5 charged to the positive side after passing through the hole portion 5a, dust in the air is removed, and odor components in the air are removed to the photocatalytic filter 7c. The photocatalyst layer of the photocatalyst filter 7c reacts by the irradiation of ultraviolet rays, and at the same time, the odor component can be decomposed, and the cleaning and replacement time of the photocatalyst filter 7c can be lengthened. It sterilizes bacteria mixed in dust accumulated in the electrode 5 and decomposes odor components generated from components such as cigarette smoke by the photocatalyst layer formed on the surface of the discharge counter electrode 5 to further clean indoor air. .

  As for cleaning, after removing the dirty deodorizing filter 7, the dirty discharge counter electrode 5 is pulled out along the groove 3b of the frame 3 and can be easily taken out. The 4 discharge needles 4c and the discharge electrode substrate 4b do not get in the way and are extremely simple and safe. For normal dirt, only the discharge counter electrode 5 needs to be cleaned. However, when the dirt is so severe that the discharge needle 4c needs to be cleaned, the nail 3a of the frame 3 is removed after the discharge counter electrode 5 is removed. And the discharge electrode 4 can be removed. Further, the discharge electrode 4 and the discharge counter electrode 5 can be attached simply by reversing the removal.

  In this way, not only the odor components are decomposed by the photocatalyst and the ultraviolet lamp 6a, but also the fine dust and cigarette smoke contained in the indoor air are sucked into the dust collecting electrode, and the bacteria mixed in the accumulated dust are removed by the ultraviolet lamp. In addition to being killed by the photocatalyst 6a, the photocatalyst layer removes odor components such as cigarette smoke, and the photocatalyst filter 7c and the electrostatic precipitator 1 can be simultaneously irradiated with UV light by one UV lamp 6a. A high-quality air conditioner can be provided.

Further, since the photocatalytic filter 7c, the ultraviolet lamp 6a, and the electrostatic precipitator 1 are provided in the space between the suction port 11 and the heat exchanger 8, cleaning and other maintenance can be easily performed, and the heat exchanger 8 can be installed on the windward side. By being located, adhesion of odor components and dust to the heat exchanger 8 can be reduced.
Further, by arranging the electrostatic dust collector 1 having a relatively complicated structure on the heat exchanger 8 side, the photocatalytic filter 7c, the ultraviolet lamp 6a, and the electrostatic dust collector 1 can be compactly attached to the air conditioner as a unit. Is.
In addition, the relatively heat-sensitive photocatalytic filter 7c is positioned on the leeward side of the ultraviolet lamp 6a, and the relatively heat-resistant electrostatic precipitator 1 is positioned on the leeward side of the ultraviolet lamp 7c. On the other hand, a safer air conditioner can be provided.

Sectional drawing of one Example of this invention. The perspective view of the decomposition | disassembly state of the principal part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric dust collector 5 Discharge counter electrode 6a Ultraviolet lamp 7 Deodorizing filter 7c Photocatalyst filter 12 Inlet 16 Outlet

Claims (2)

  A suction port and air outlet are provided on the surface of the housing, a heat exchanger and a blower fan are provided in the housing, an air passage is formed between the air inlet and the air outlet, and the indoor air sucked from the air inlet is heat exchanged. Then, in the air conditioner that blows air into the room from the air outlet, an electric dust collector including a deodorizing filter by a photocatalyst, a discharge electrode, and a discharge counter electrode is provided in the air passage, and between the deodorization filter and the electric dust collector. An air conditioner characterized in that an ultraviolet lamp is positioned on the surface and a photocatalyst layer is formed on the surface of the discharge counter electrode.   The deodorizing filter and the electrostatic precipitator are housed in a resin frame, the deodorizing filter is formed with a photocatalyst layer such as titanium oxide on a non-woven fabric, and the needle-like discharge electrode of the electrostatic precipitator is a hole provided in a discharge counter electrode. The photocatalyst layer is formed on the surface of the discharge counter electrode, and a handle is provided at one end of the discharge counter electrode. The handle is slidably attached to and removed from the groove of the frame. The air conditioner according to claim 1, further comprising a filter unit attached to the air conditioner.

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