JPH07299385A - Air cleaner - Google Patents

Abstract

PURPOSE:To make easy maintenance services and the reaplacement of a dust collection part as well as protect an operator from an electric shock by allowing the charging part integrated with the dust collection part of an air purifier to be freely detachable from an air-conditioning duct and ensuring that a float electrode can be shortcircuited to its opposite electrode side when removing a high voltage power supply. CONSTITUTION:A discharge unit 11, a counter electrode unit 12, a float electrode unit 13 and a collector unit 14 are housed, in this order, in the housing part of a main device system case which is freely detachable from an air-conditioning duct 2. Hereupon, a change part consisting of the discharge unit 11 and the counter electrode unit 12 and a dust collection part consisting of the float electrode unit 13 and the collector unit 14, are housed in the housing part of the main device system case by connecting these units electrically to a high voltage power supply unit 9 arranged outside the main device system case. In addition, the float electrode 132 is shortcircuited to a counter electrode 122, when the high voltage power supply unit 9 is removed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air cleaner installed in an air conditioner of an automobile.

[0002]

2. Description of the Related Art A conventional air cleaning device is disclosed, for example, in Japanese Patent Laid-Open No.
As disclosed in Japanese Patent Laid-Open No. 270744-270, the charging unit and the dust collecting unit are configured to be independently mounted in the air conditioning duct.

The charging section is composed of a discharge electrode to which a high voltage is applied and a discharge counter electrode connected to the ground side. Corona discharge is generated between the discharge electrode and the discharge counter electrode, and a gap between the electrodes is generated. It charges the passing dust. Further, the dust collecting portion is composed of a high-voltage side electrode connected to a float electrode having a predetermined high voltage induced by a bias voltage induced by the discharge electrode, and a ground electrode connected to a ground side. The dust charged in the part is adsorbed and captured between the electrodes. As a result, in the dust collecting portion of this reference, the potential difference can be formed between the high voltage side electrode and the ground electrode by providing the float electrode without applying a voltage to the high voltage side electrode. .

[0004]

However, since the high-voltage side electrode connected to the conventional float electrode floats from the ground itself, even if the air cleaning device is stopped, the float electrode has a predetermined voltage. The electric charge will remain,
Further, due to this electric charge, electric charges having the opposite polarity to the electric charges are generated in the ground side electrode which is the counter electrode of the float electrode, so that the potential between the float electrode and the ground side electrode is maintained at a high voltage. This charge disappears due to spontaneous discharge, but it takes a long time for the voltage to decay to the extent that it does not affect the human body. For this reason, there is a risk of electric shock when the dust collecting portion is removed for maintenance, for example.

Further, in the conventional air purifying apparatus, the charging section and the dust collecting section are separately configured and attached to the air-conditioning duct, so that they need to be removed separately during maintenance. , It took a lot of work.

Therefore, according to the present invention, the charging unit and the dust collecting unit can be integrally attached to and detached from the air conditioner, and the residual charge of the dust collecting unit is discharged during maintenance or replacement of the dust collecting unit. An object of the present invention is to provide an air purifying device that can be used.

[0007]

Therefore, the present invention is
A main body case detachably mounted in the air conditioning duct and having a storage portion; and a high voltage power supply unit detachably attached to the outside of the storage portion of the main body case and having a high voltage power supply terminal, a ground terminal and a switch opening / closing means. A discharge unit arranged upstream of the storage unit and having a discharge electrode connected to the high-voltage power supply terminal; and a discharge unit fitted to the discharge unit and stored in the storage unit, extending between the discharge electrodes. A collector unit in which a counter electrode unit having a discharge counter electrode connected to the ground terminal, a first constituent electrode housed on the downstream side of the housing portion, and a second constituent electrode connected to the discharge counter electrode are alternately arranged. And a float electrode unit having a float electrode arranged between the discharge unit and the collector unit and connected to the first component electrode, and one end of which is the discharge electrode unit. It is connected to the counter electrode and the other end is connected to the float electrode, and when the high voltage power supply unit is mounted, the discharge counter electrode and the float electrode are shut off by the switch opening / closing means of the high voltage power supply unit. In addition, a short-circuit switch for electrically connecting the discharge counter electrode and the float electrode when the high-voltage power supply unit is removed is provided.

[0008]

Therefore, according to the present invention, the discharge unit, the counter electrode unit, the float electrode unit, and the collector unit are housed in this order in the housing portion of the main body case which is detachable from the air conditioning duct, and arranged outside the main body case. By being electrically connected to the high-voltage power supply unit, the charging unit configured by the discharge unit and the counter unit and the dust collecting unit configured by the float electrode unit and the collector unit are integrally stored in the storage unit of the main body case. Therefore, the air cleaning device itself can be freely attached to and detached from the air conditioning duct, and during maintenance, when the high voltage power supply unit is removed after detaching the air cleaning device from the air conditioning duct, the switch opening / closing means is used. The float electrode and discharge counter electrode are short-circuited because the short-circuit switch is closed. For residual charge is canceled in the charge and a second component electrodes remaining in the float electrodes Te, can prevent the risk of electric shock, it can accomplish the above problems.

[0009]

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

The air cleaning apparatus 1 shown in FIGS. 1 to 3 is, for example, detachably arranged in an air conditioning duct 2 of an air conditioning system for a vehicle, and is usually on the downstream side of the blower 3 and on the upstream side of the evaporator 4. It is arranged near the side. As a result, the outside air introduction port 6 selected by the intake door 5
Alternatively, dust or the like is removed from the air taken in by the operation of the blower 3 from the inside air inlet 7.

This air cleaning device 1 is provided with the air conditioning duct 2
Main body case 8 having a pre-filter 82 on the upstream side of the main body case 8, a high-voltage power supply unit 9 arranged on the upper side surface of the main body case 8, and a storage portion 8 formed in the main body case 8.
3 and each unit (discharge unit 11, counter electrode unit 12, float electrode unit 13, collector unit 14) that forms a charging unit and a dust collecting unit, and a short-circuit switch 15.

As shown in FIGS. 1 to 4, the main body case 8 is mounted on the air conditioning duct 2 when it is attached to the air conditioning duct 2.
A front partition panel 81 for partitioning the opening cross-section, a storage section 83 extending from the front partition panel 81 to the downstream side of the air conditioning duct by a predetermined length, and an upstream side of the air conditioning duct of the storage section. The front partition panel 18 includes a pre-filter 82 and a flange portion 84 for fixing the main body case 8 to the air conditioning duct 2.

The body case 8 is, as shown in FIG.
The high voltage power supply unit 9 is attached to the air conditioning duct 2 and is inserted into the air conditioning duct 2 through the screw hole 85 formed in the flange portion 84 to the female screw portion 2a formed in the air conditioning duct 2 and the screw 10
It is fixed by fixing means such as.

A short-circuit switch 15 and a high-voltage power supply terminal 16 are attached to the upper side surface of the housing portion 83 of the main body case 8. The short-circuit switch 15 includes a contact portion 151 composed of two conductive elastic members, a ground portion 152 that contacts a ground terminal of the high-voltage power supply unit 9, a discharge counter electrode side terminal 153 that contacts a discharge counter electrode terminal 121 described below, And the float electrode side terminal 1 that contacts the float electrode terminal 131.
54, and when the high-voltage power supply unit 9 is attached, the contact portion 151 is provided by the insulating terminal 91 as the switch opening / closing means, as shown in FIG.
Is open. Also, the high-voltage power supply terminal 1
Reference numeral 6 denotes a high-voltage power supply side terminal 161 which is inserted into and contacts the high-voltage terminal 92 of the high-voltage power supply unit 9, and a discharge electrode terminal 1 described below.
11 and the discharge electrode side terminal 162 that is in contact with the electrode 11.

The units housed on the most upstream side of the housing section 83 are the discharge unit 11 and the counter electrode unit 12 which constitute the charging section. As shown in FIG. 5, the discharge unit 11 has a frame body 112 formed of an insulating member such as a synthetic resin having a predetermined width.
A notch portion 113 from which the discharge electrode terminal 111 projects,
A recess 114 for mounting the discharge counter electrode terminal 121 and a recess 115 for mounting the float electrode terminal 131 are formed. Further, inside the upper end of the frame 112, a high voltage plate 111a connected to the discharge electrode terminal 111 and having spring holding portions 111b formed at predetermined intervals is attached. Further, the frame body 1
A support plate 11 for supporting a discharge wire 119b constituting a discharge electrode 119 described below is provided on the upper and lower portions of the plate 12.
6, 117 are provided, and a plurality of pins 118 for hooking the discharge wire 119b are provided at predetermined positions on the support plate.
Is attached.

As a result, the discharge wire 119b is
One end thereof is fixed to a predetermined position of the support plate 117, and the support plate 11 facing from the fixed position
6 is connected to the pin 118 attached to the support plate 116, and is further connected to the pin 118 of the support plate 117 facing from the pin 118 of the support plate 116, and the other end side is the spring holding portion 111b via the spring 119a.
It is hooked to and attached to. In this embodiment, a plurality of discharge wires 119b are arranged so as to be reciprocated between the support plates 116 and 117 a plurality of times to form a discharge electrode 119 in the frame 112.

As shown in FIG. 6, the counter electrode unit 12 is integrally formed of a conductor member and has a discharge counter electrode terminal 121 mounted on a recess 114 formed in the frame 112 of the discharge unit 11 at an upper end portion thereof. A discharge counter electrode 122 extending between the discharge electrodes 119 is formed by cutting and raising, and a side frame 123 for sandwiching the discharge unit 11 is formed on a side portion. Further, a lower electrode terminal 124 that contacts a lower electrode 142 of the collector unit 14 described below is formed at the lower end of the counter electrode unit 12. An insulating member 125 is fixed to the lower electrode terminal 124 at a portion where the lower end of the float electrode unit 13 abuts to insulate the float electrode unit 13 from the lower electrode terminal 124. As a result, by mounting the counter electrode unit 12 on the discharge unit 11, a charging part is formed as shown in FIG.

As shown in FIG. 8, the float electrode unit 13 housed on the downstream side of the charging section of the housing section 83 has a float electrode 132 formed of a wire mesh or the like in a frame body 134, A float electrode terminal 131, which is electrically connected to the float electrode 132 and is mounted in a recess 115 formed in the frame 112 of the discharge unit 11, is provided on an upper portion of the frame body 134. It has a first component electrode terminal 133 connected to the upper electrode 141 of the unit 14.

Further, as shown in FIG. 9, the collector unit 14 housed on the downstream side of the float electrode unit 13 has the float electrode 13 above the frame body 145.
2 has an upper electrode 141 which is electrically connected to the counter electrode 119 and a lower electrode 142 which is electrically connected to the counter electrode 119 below the frame body 145.
have. In addition, the dust collecting portion disposed in the frame body 145 has the first constituent electrode plate 14 electrically connected to the upper electrode 141.
3 and the second component electrode plate 14 electrically connected to the lower electrode 142
4 and 4 are arranged alternately.

When the air cleaning device 1 having the above-mentioned structure is mounted in the air conditioning duct 2 and connected to the power source (battery) 20, the structure shown in the electric circuit diagram of FIG. 1 is obtained. As a result, when the battery voltage is supplied to the high-voltage power supply unit 9 as the air conditioner operates, the high-voltage terminal 92 of the high-voltage power supply unit 9 is supplied.
Then, a high voltage of, for example, 4 to 5 KV is generated. This high voltage is applied to the high-voltage power supply terminal 16 (specifically, the high-voltage terminal 92
~ High voltage power source side terminal 161 ~ discharge electrode side terminal 162 ~ discharge electrode terminal 111) is applied to the discharge electrode 119. On the other hand, the ground terminal of the high-voltage power supply unit 9 is connected to the ground portion 152 of the short-circuit switch 15, the discharge counter electrode side terminal 15
3. By conducting the discharge counter electrode 122 via the discharge counter electrode terminal 121, the high voltage is applied between the discharge electrode 119 and the discharge counter electrode 122.

Further, since the discharge counter electrode 122 and the second constituent electrode plate 144 of the collector unit 14 which is in conduction with the discharge counter electrode 122 have the same potential (GND), the float electrode 132 and the float electrode 132. The first constituent electrode plate 143, which is in a conductive state with the discharge electrode 1
It has a predetermined potential because it floats between 19 and ground. Since this potential is usually a high voltage of about 2 KV, a strong electric field is generated between the first component electrode plate 143 and the second component electrode plate 144.

From the above, the air sucked by the operation of the blower 3 passes through the pre-filter 82 to remove the dust of a predetermined size or more, and the fine dust not removed by the pre-filter 82. (Pollen, microorganisms, etc.) is the discharge electrode 119 and the discharge counter electrode 122.
Is charged by passing between the
The electric field formed between the constituent electrode plate 143 and the second constituent electrode plate 144 causes the electrode plates 143 and 144 to be attracted to one of the electrode plates 143 and 144. As a result, pollen, dust, microorganisms, smoke such as cigarettes, smog and the like can be removed from the air passing through the evaporator 4, so that the odor of the evaporator 4 can be prevented and the blown air can be purified.

Further, when the maintenance or replacement of the dust collecting part (collector unit) of the air cleaning device 1 is performed, first, the air cleaning device 1 in which the charging part and the dust collecting part are integrated is removed from the air conditioning duct 2, Then, the high-voltage power supply unit 9 is removed from the main body case 8. At this time,
When the contact portion 151 of the short-circuit switch 15 that has been opened by the insulating terminal 91 formed in the high-voltage power supply unit 9 comes into contact, as shown in FIG.
32 and the first component electrode plate 143 side and the discharge counter electrode 122 and the second component electrode plate 144 side are short-circuited, the electric charge remaining on the float electrode 132 and the first component electrode plate 143 side and the discharge counter electrode due to this charge. Since the charges generated on the side of 122 and the second constituent electrode plate 144 are canceled out, it is possible to prevent electric shock due to the charges remaining on the side of the float electrode 132 and the first constituent electrode plate 143.

[0024]

As described above, according to the present invention, the charging part and the dust collecting part of the air cleaning device can be integrally attached to and detached from the air conditioning duct, and the float electrode and the counter electrode can be removed when the high voltage power supply is removed. Since the sides are short-circuited, maintenance and replacement of the dust collecting portion can be facilitated, and the electric shock of the worker can be prevented.

[Brief description of drawings]

FIG. 1 is an electric circuit diagram of an air cleaning device according to an embodiment of the present invention.

FIG. 2 is an explanatory view showing a mounting state of the air cleaning device according to the embodiment of the present invention on an air conditioning duct.

FIG. 3A is a stepped cutaway sectional view showing the configuration of the air cleaning device, and FIG. 3B is an explanatory diagram illustrating the configuration of the air cleaning device.

FIG. 4A is a front view showing a configuration of a main body case, and FIG. 4B is a side view.

5A is a front view showing a configuration of a discharge unit, and FIG. 5B is a sectional view taken along line I-I.

FIG. 6A is a front view showing a configuration of a counter electrode unit, and FIG. 6B is a sectional view taken along line II-II.

FIG. 7A is a front view showing a configuration of a charging unit,
(B) is a III-III sectional view taken on the line.

FIG. 8A is a front view showing a configuration of a float electrode unit, and FIG. 8B is a sectional view taken along line IV-IV.

9A is a front view showing the configuration of a collector unit, and FIG. 9B is a sectional view taken along line VV.

FIG. 10 is an electric circuit diagram illustrating a short circuit by a short-circuit switch when the high-voltage power supply unit is removed.

[Explanation of symbols]

 1 Air Cleaner 2 Air Conditioning Duct 8 Main Body Case 9 High Voltage Power Supply Unit 11 Discharge Unit 12 Counter Electrode Unit 13 Float Electrode Unit 14 Collector Unit 15 Short Circuit Switch 82 Prefilter 82 Storage 119 Discharge Electrode 122 Discharge Counter Electrode 132 Float Electrode 143 1st Component Electrode Plate 144 second component electrode plate

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shinji Okuhara 39 No. 39 Toyohara, Chiyo-ji, Konan-cho, Oza-gun, Saitama Prefecture Zexel Konan Factory Co., Ltd.

Claims (1)

[Claims] 1. A main body case detachably mounted in an air-conditioning duct and having a storage portion, and detachably attached to the outside of the storage portion of the main body case, and further comprises a high-voltage power supply terminal, a ground terminal and a switch opening / closing means. A high-voltage power supply unit that has, a discharge unit that is arranged on the upstream side of the storage unit and that has a discharge electrode that is connected to the high-voltage power supply terminal, and a discharge unit that is fitted into the storage unit and that is stored in the storage unit. A counter electrode unit having a discharge counter electrode extending to the ground terminal and connected to the ground terminal, a first constituent electrode housed on the downstream side of the housing portion, and a second constituent electrode connected to the discharge counter electrode, alternately. A collector unit arranged, and a float electrode unit having a float electrode arranged between the discharge unit and the collector unit and connected to the first constituent electrode. , One end of which is connected to the discharge counter electrode and the other end of which is connected to the float electrode, and the discharge counter electrode and the float electrode when the high voltage power supply unit is mounted by the switch opening / closing means of the high voltage power supply unit. An air purifying device comprising: a short-circuiting switch that connects the discharge counter electrode and the float electrode when the high-voltage power supply unit is removed.