JP2005180833A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To compactly store an electrostatic dust precipitator 4, an ultraviolet lamp 11, and a deodorizing filter 21. <P>SOLUTION: The air conditioner is provided with an inlet and an outlet and has a heat exchanger 42 and a fan 54 inside a casing. After indoor air sucked through the inlet has been subjected to heat exchange, it is guided indoors through the outlet. The electrostatic dust precipitator 4 is provided between the inlet and the heat exchanger 42. The electrostatic dust precipitator 4 has a discharge electrode 5 and a discharge counter electrode 6 in opposite relation inside a frame. A power circuit 23 that supplies power to each of the electrodes is mounted on the frame. A lid 37 that covers the power circuit 23 is formed integrally with the frame 3 and is bent at a thin-walled part 36 provided between the lid 37 and the frame 3, to cover the power circuit 23. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an air conditioner, and more particularly, to an air purifier provided in a ventilation path for collecting indoor air.

Some conventional air conditioners include an electrostatic air purifier for removing cigarette smoke and fine dust drifting indoors, and the power supply circuit for supplying high-voltage power to the air purifier is the frame body. It was connected and connected to the connection part provided in the. (For example, see Patent Document 1)
Also, the indoor air containing odor is sucked into the interior from the suction port, and the sucked air passes through the heat exchanger, then passes through the deodorizing filter irradiated with ultraviolet rays by the ultraviolet lamp, passes through the blower and blows out through the blower. Is again discharged into the room. The deodorizing filter 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 filter with ultraviolet rays and the photocatalyst layer.
Japanese Patent No. 3104094

However, when dust in the air adheres to an electric circuit or connection terminal in the vicinity of the air passage in the air conditioner, it may cause a failure or malfunction.
In addition, the space in the air conditioner is limited, and in order to mount the electrostatic dust collector, the ultraviolet lamp, and the deodorizing filter, it is necessary to store the air conditioner in a compact manner.
In addition, since both the electrostatic dust collector power supply and the ultraviolet lamp power supply are required, it is necessary to store each lead wire and connection terminal in a compact manner.

  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, a heat exchanger and a blower fan are provided in the housing, and after the indoor air sucked from the suction port is heat-exchanged, In an air conditioner equipped with an electrostatic dust collector between the suction port and the heat exchanger, the electrostatic dust collector has a discharge electrode and a discharge counter electrode in the frame. A power circuit for supplying power to each electrode is attached to the frame, and a lid that covers the power circuit is formed integrally with the frame, and is provided between the lid and the frame. The power supply circuit is covered by bending at a thin part.

  In addition, a suction port and a blowout port are provided, and a heat exchanger and a blower fan are provided in the housing. After exchanging heat from the indoor air sucked from the suction port, the blower blows into the room through the blowout port, and the suction port and the heat exchanger In an air conditioner equipped with an electrostatic dust collector, a photocatalyst filter, an ultraviolet lamp and an electric dust collector are provided on a frame provided in the air passage in the housing, and the electrostatic collector is provided. The dust device is provided with a discharge electrode and a discharge counter electrode facing each other in a frame body, and a power circuit for supplying both power to the electrode and power to the ultraviolet lamp is attached to the frame body.

  In addition, a lid that covers the power supply circuit is formed integrally with the frame body, and the folded power supply circuit is covered with a thin portion provided between the lid and the frame body.

According to the present invention, it is possible to provide an air conditioner having a higher air cleaning effect by simultaneously irradiating ultraviolet rays to the deodorizing filter and the electric dust collector with one ultraviolet lamp, and discharging the electric dust collector. Since the photocatalyst layer is also formed on the counter electrode surface, the odorous components such as cigarette smoke contained in the dust attached to the discharge counter electrode are decomposed by the photocatalyst to provide an air conditioner with a higher air cleaning effect. Since the deodorizing filter, UV lamp, and electrostatic precipitator are installed in the space between the suction port and the heat exchanger, cleaning and other maintenance can be performed easily, and the heat exchanger is 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 power circuit cover is molded integrally with the frame base, and it is not necessary to provide a power circuit cover as a separate part to prevent dust from being attached to the cover due to the influence of air blowing, which can reduce mold costs. .
In addition, the assembling work is facilitated, and even when the cover is removed for after-sales service or the like, it is possible to prevent the cover from being forgotten or lost.

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 of this, the frequency of cleaning of the deodorizing filter and the discharge counter electrode is reduced by sterilizing the collected dust and decomposing the odor component.
The electrostatic dust collector is provided with a discharge electrode and a discharge counter electrode facing each other in a frame, and a power supply circuit for supplying power to each electrode is attached to the frame, and a lid that covers the power supply circuit is attached to the frame. Since the power circuit is covered with a thin part provided between the lid and the frame so as to cover the power circuit, it is not necessary to provide a cover for the power circuit as a separate part. Cost can be reduced.
In addition, the assembling work is facilitated, and even when the cover is removed for after-sales service or the like, it is possible to prevent the cover from being forgotten or lost.

  An embodiment of the present invention will be described below with reference to FIGS. 1 to 4. Reference numeral 1 denotes an air purifying unit incorporated in a part of the ventilation path of the air conditioner 2, and a frame made of insulating plastic or the like. The discharge electrode 5 of the electrostatic precipitator 4 is provided in the body 3, the discharge electrode 5 is connected to the negative side of a DC power source of about 4500 volts, and the discharge counter electrode is connected to the ground facing the discharge electrode 5. 6 is provided.

The discharge electrode 5 includes a discharge electrode substrate 8 parallel to the center of an aluminum frame 7 having a thickness of about 1 mm, and is provided with a pointed discharge needle 9 from the discharge electrode substrate 8 toward the leeward side. The frame 7 is attached to the center of the frame base 10 with screws.
Further, both ends of the ultraviolet lamp 11 are fitted and fixed to the frame base 10 at the front and lower part of the discharge electrode substrate 8.

  The discharge counter electrode 6 is attached and detached by sliding up and down along the grooves provided on the inner left and right sides of the frame base 11. A large number of about 17 mm in diameter is formed at the center of an aluminum flat plate having a thickness of about 1 mm. In addition, the end portion 13 of the plate is covered with an insulating member such as plastic having a relatively high heat resistance, and a handle 14 is formed by projecting a part of the insulating member. The needles 9 are provided in a 1: 1 ratio toward the center of the hole 12.

Then, the tip of the discharge needle 9 of the discharge electrode 5 is set so as to be positioned 1 mm to 5 mm above the center of the hole 12 of the discharge counter electrode 6 (2 mm upwind in this embodiment) when attached. As a result, the plate portion 15 of the discharge counter electrode 6 can also serve as a dust collecting portion, and only the discharge counter electrode 6 can be made detachable.
The surface of the plate portion 15 of the discharge counter electrode 6 is coated with a photocatalytic action so that a photocatalyst layer is formed on the surface of the plate portion 15, and odor components such as cigarette smoke adhering to the plate portion 15. Can be decomposed and removed by irradiation with the ultraviolet lamp 11.

  A grid-shaped frame cover 16 is attached to the frame base 10 from the front surface, protects the electrostatic dust collector 4 and the ultraviolet lamp 11, and prevents the ultraviolet lamp 11 from being directly exposed to the user. A projection 17 provided at the upper end is inserted into the upper engagement hole 18 at the upper end of the frame base 10, and a claw 19 provided at the lower end is engaged with the lower engagement hole 20 at the lower end of the frame base 10. Attached.

A deodorizing filter 21 is attached to the center of the frame cover 16 by being fitted into the lattice-shaped front concave portion 22 from the front. A photocatalytic layer such as titanium oxide is formed on an adsorbent such as activated carbon mixed with a nonwoven fabric. Thus, the odor component is adsorbed to deodorize the odor component, and the odor component adsorbed on the adsorbent is decomposed by irradiating the photocatalyst layer with ultraviolet rays.
Further, since the adsorbent, nonwoven fabric, etc. of the deodorizing filter 21 are relatively weak against heat, they can be used more safely by being provided on the windward side of the ultraviolet lamp 11 that generates heat.

  23 is a power supply circuit comprising a dust collecting electrode circuit section 24 on the left side and a UV lamp circuit section 25 on the right side, and an earth terminal connected to the discharge counter electrode 6 is disposed above the left side surface of the dust collecting electrode circuit section 24. A power supply of about minus 4500 V is supplied below the left side surface of the projection 26, and a terminal-like projection 27 connected to the discharge electrode 5 is provided. A control unit (for the air conditioner 2) is provided below the circuit unit 25 for the ultraviolet lamp. A terminal portion 28 to which power and signals from an unillustrated terminal are sent, and a lamp terminal portion 29 for supplying power to the ultraviolet lamp 11 is provided at the center right end.

  From the lamp terminal portion 29, about 750 V alternating current is supplied to both ends of the ultraviolet lamp 11 through the lamp lead wires 30. The lead wire 30 is wired through a groove 31 below the frame base 10.

  A mounting portion 32 of the power supply circuit 23 is provided at the right end of the frame base 10, and a convex portion 34 provided above and below the power supply circuit 23 is slid from the right side to a slide groove 33 provided on the upper and lower inner surfaces of the mounting portion 32. When the protrusions 26 and 27 are inserted and set in the connection hole 35 provided on the left side of the attachment portion 32 by attachment, the terminal protrusion 26 is connected to the discharge counter electrode 6 and the terminal protrusion 27 is the discharge electrode 5. Are connected to each other.

A lid 37 formed integrally with the mounting portion 32 so as to be rotatable about the thin portion 36 is provided on the right side of the mounting portion 32. After the power supply circuit 23 is set, the lid 37 is rotated and the lid 37 is rotated. The nail | claw 38 provided in the upper and lower sides is latched and fixed to the latching | locking part 39 provided in the attachment part 32 upper and lower sides.
Reference numeral 40 denotes a heat exchange fitting, which attaches the right rear surface of the frame base 10 to the heat exchanger 42 together with the legs 41 protruding from the left rear surface of the frame base 10.

The leg portion 41 is a mounting foot that projects to the leeward side of the frame body 3 and is inserted between the fin 43 or the heat exchange pipe 44 on the front surface of the fin tube type heat exchanger 42 and is attached to the heat. The exchanger 42 includes a front heat exchanger 45 inclined to the front side and a rear heat exchanger 46 inclined to the back side.
Further, since the electrostatic dust collector 4, the ultraviolet lamp 11, the deodorizing filter 21, and the power circuit 23 are formed as a unit, assembly work and repair can be easily performed.

The air conditioner 2 forms a housing outer surface by a casing 47 on the back surface and a front panel 48 on the front surface, and an air suction port 49 is provided on the front surface and top surface of the front panel 48, along the back surface of the suction port 49. A mesh-like prefilter 50 for removing relatively large dust in the air is provided.
The heat exchanger 42 is provided in the lee of the pre-filter 50, and the air purifier including the deodorizing filter 21, the ultraviolet lamp 11, and the electrostatic dust collecting device 4 is provided between the pre-filter 50 and the heat exchanger 42. Unit 1 is earned.

Reference numeral 51 denotes a drain tray that receives the condensed water generated in the heat exchanger 42 during the cooling operation. The drain tray 51 receives the front drain tray 52 that receives the condensed water from the front heat exchanger 45 and the condensed water from the rear heat exchanger 46. A rear drain pan 53 is provided.
The wall surface on the back side of the front drain plate 52 and the front side wall surface of the rear drain plate 53 also serve as a current plate for the blower fan 54.
The blower fan 54 is a cross-flow fan provided between the heat exchanger 42 and the casing 47, and sucks room air from a suction port 49 and blows it out from a blower outlet 55 provided at the lower portion of the front panel 48. 55 includes an up / down wind direction plate 56 and a left / right wind direction plate 57 for changing the direction of the blown air according to the preference of the user.

  The operation will be described. When the air conditioner 2 is operated, the blower fan 54 and the compressor (not shown) start operation, and the indoor air sucked from the suction port 49 is relatively large in the prefilter 50. After the dust is removed, a part of the air goes directly to the heat exchanger 42, and a part of the air passes through the deodorizing filter 21 and the electrostatic dust collector 4 and then is heat-exchanged by the heat exchanger 42 and blown. The air is blown into the room from the air outlet 55 via the fan 54.

  At this time, if the operation device (not shown) of the ultraviolet lamp 11 and the electrostatic precipitator 4 is operated, the ultraviolet lamp 11 starts to be turned on, and about 4500 volts between the discharge electrode 5 and the discharge counter electrode 6. As a result, a negative charge is generated when cigarette smoke in the air or small invisible dust passes between the discharge needle 9 of the discharge electrode 5 and the hole 12 of the discharge counter electrode 6. And is attracted to and adsorbed to the plate portion 15 on the back surface of the discharge counter electrode 6 that is grounded when passing through the hole portion 12, dust in the air is removed, and odor components in the air are removed from the deodorizing filter in which the photocatalyst layer is formed. 21, the photocatalyst layer of the deodorizing filter 21 reacts by the irradiation of ultraviolet rays, and simultaneously decomposes the odor component, and the cleaning and replacement time of the deodorizing filter 21 can be extended. Device 4 It sterilizes bacteria mixed in dust accumulated in the discharge counter electrode 6 and decomposes odor components generated from components such as cigarette smoke by the photocatalyst layer formed on the surface of the discharge counter electrode 6 to further clean indoor air. is there.

The assembly of the air cleaning unit 1 will be described. The discharge electrode 5 is fixed to the frame base 10 with screws from the front, then both ends of the ultraviolet lamp 11 are fixed to the frame base 10, and the frame cover 16 is attached to the projection 17. The deodorizing filter 21 is fitted into the front surface of the frame cover 16.
Next, when the power supply circuit 23 is slid to the left with the recess 34 aligned with the slide groove 33 from the right side of the mounting portion 32, the terminal-like protrusions 26 and 27 are mounted in a state of being inserted into the connection holes 35.
Thereafter, the lamp lead wire 30 of the ultraviolet lamp 11 is set on the lamp terminal portion 29, and the discharge counter electrode 6 is inserted from below the frame base 10, whereby the assembly of the air cleaning unit 1 is completed.

In this way, not only the odor components are decomposed by the photocatalyst and the ultraviolet lamp, but also dust that cannot be captured by the deodorizing filter such as fine dust and cigarette smoke contained in the indoor air is sucked to the discharge counter electrode and mixed into the accumulated dust. In addition to being able to kill the germs to be killed with an ultraviolet lamp, the single ultraviolet lamp can simultaneously irradiate the deodorizing filter and the electrostatic precipitator with ultraviolet rays, and can provide an air conditioner with a higher air cleaning effect. Since the photocatalyst layer is also formed on the surface of the discharge counter electrode of the electric dust collector, the air conditioner has a higher air cleaning effect by decomposing odor components such as cigarette smoke contained in the dust attached to the discharge counter electrode with the photocatalyst. Is to provide.
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 UV lamp, and the electrostatic precipitator that is relatively heat-resistant is located on the leeward side of the UV lamp, making it safer against the heat generated by the UV lamp. An air conditioner can be provided.
Moreover, it is not necessary to provide a cover for the power circuit as a separate part, and the die cost can be reduced.
In addition, the assembling work is facilitated, and even when the cover is removed for after-sales service or the like, it is possible to prevent the cover from being forgotten or lost.

Sectional drawing of one Example of this invention. The expanded sectional view of the principal part. The perspective view of the decomposition | disassembly state of the principal part. The expansion perspective view of the frame base.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air purifying unit 3 Frame 4 Electrostatic dust collector 5 Discharge electrode 6 Discharge counter electrode 11 Ultraviolet lamp 21 Deodorizing filter 36 Thin part 37 Cover 42 Heat exchanger

Claims (3)

  A suction port and a blower outlet are provided, and a heat exchanger and a blower fan are provided in the housing. After heat exchange of indoor air sucked from the suction port, the air is blown into the room from the blower outlet, and the suction port and the heat exchanger In an air conditioner having an electrostatic dust collector in between, the electrostatic dust collector has a discharge electrode and a discharge counter electrode facing each other in a frame, and supplies power to each of the electrodes. A power supply circuit is attached to the frame body, and a lid that covers the power supply circuit is formed integrally with the frame body, and the power supply circuit is covered by bending at a thin portion provided between the lid and the frame body. A featured air conditioner.   A suction port and a blower outlet are provided, and a heat exchanger and a blower fan are provided in the housing. After heat exchange of indoor air sucked from the suction port, the air is blown into the room from the blower outlet, and the suction port and the heat exchanger In an air conditioner having an electrostatic dust collector in between, a photocatalyst filter, an ultraviolet lamp and an electric dust collector are provided on a frame provided in the air passage in the casing, and the electrostatic dust collector The apparatus is provided with a discharge electrode and a discharge counter electrode facing each other in a frame, and an air conditioner having a power supply circuit for supplying both power to the electrode and power to an ultraviolet lamp attached to the frame.   3. The air conditioner according to claim 2, wherein a lid that covers the power circuit is formed integrally with the frame, and the folded power circuit is covered with a thin portion provided between the lid and the frame. Machine.

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