JPH11578A - Air purifier for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air purifier for vehicle enabling to prevent a leakage electric current from a collection anode of a dust collection part. SOLUTION: Resin-made spacers 3 having larger volume resistivity than a belt like anode resin coated (collector anode) 1, are inserted between the resin-coated belt like anode 1 and a belt like cathode (collector dust collection pole) 2, and a space between the collector anode 1 and the collector dust collection pole 2 is kept constant.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifying apparatus for automobiles incorporated in an air conditioning duct of an air conditioner for automobiles, and more particularly to a structure of a dust collecting portion of the air purifying apparatus for automobiles.

[0002]

2. Description of the Related Art FIG. 4 is a view showing the structure of a conventional automobile air conditioner disclosed in Japanese Patent Application Laid-Open No. 6-143998. The relatively large dust that has been introduced into the air filter 13 and previously mixed into the air by the pre-filter 14 is removed and sent to the air cleaning device 15, where the finer dust is removed. In summer, the air purified by the air purifying device 15 is cooled by a cooling heat exchanger 16 as an evaporator and sent to the passenger compartment from an air outlet 17. Further, in winter, after being dehumidified by the cooling heat exchanger 16, it is heated by the heating heat exchanger 18 and
Sent to the passenger compartment. Note that, in FIG.
Is a mix door for adjusting the temperature of the conditioned air, and adjusts the mixing ratio of the cool air from the cooling heat exchanger 16 and the warm air from the heating heat exchanger 18. The air cleaning device 15
A charging unit 20 for charging dust particles in the air, a dust collecting unit 21 disposed downstream of the charging unit 20 for collecting the charged dust particles, and a high voltage applied to the charging unit 20 and the dust collecting unit 21 And a high-voltage power supply unit 22 for supplying the power. The charging unit 20 arranges the discharge electrodes 20a and the counter electrodes 20b alternately, generates a corona discharge by applying a high voltage to the discharge electrodes 20a, and removes dust particles contained in an airflow passing between the two electrodes. The collector 21 is charged, and the collector anode 1 and the collector dust collector (cathode) 2 are alternately arranged. A high voltage is applied to the collector anode 1 to generate a high electric field in a space between the two electrodes. The charged dust particles are collected by the collector dust collecting electrode 1.

[0003]

FIG. 5 (a) shows an example (front view) of a dust collecting portion 21 in which a collector anode 1 is spirally arranged in a collector frame 5 and the collector anode 1 is provided. , A collector dust collecting electrode 2 made of aluminum tape is spirally arranged. As shown in FIG. 3B, for example, the collector dust collecting electrode 2 is formed by bending an aluminum tape into a wave shape so as to keep the distance between the collector anode 1 and the collector anode 1 constant. However, the point x where the collector anode 1 and the collector dust collection electrode 2 are in contact,
In a region where the distance between the two electrodes is short in the vicinity of the contact portion x, a leakage current occurs from the collector anode 1 to the collector dust collection electrode 2, so that the collector voltage decreases and the dust collection rate of the air cleaning device decreases. There was a problem that would. In addition, there is a problem that the effective field pole region for collecting dust particles is reduced, and the dust collection rate is reduced. Therefore,
As shown in FIG. 3 (c), the collector dust collecting electrode 2 is bent by narrowing a wavy descending bent portion.
Attempts have been made to reduce the contact area with the electrode and the region where the distance between the two electrodes is short, but it has not been possible to effectively prevent current leakage from the collector anode 1. Also, if there is a place where the two electrodes are in contact with each other or a place where the distance between the two electrodes is short as shown in FIG. 3B or FIG. In addition, there is a problem that the leakage current from the collector anode 1 further increases, and the dust collection rate of the air cleaning device is significantly reduced.

SUMMARY OF THE INVENTION The present invention has been made in view of the conventional problems, and an object of the present invention is to provide an automobile air cleaning apparatus having a high dust collection efficiency and capable of preventing a leakage current from a collector anode of a dust collection section. With the goal.

[0005]

According to a first aspect of the present invention, there is provided an air purifying apparatus for automobiles, wherein a resin-coated band-shaped anode (collector anode) and a band-shaped cathode (collector dust collection electrode) of a dust collecting portion are provided. A spacer made of a resin is mounted between the collector and the collector to keep the distance between the collector anode and the collector dust collecting electrode constant and to keep the insulation between the collector anode and the collector dust collecting electrode.

According to a second aspect of the present invention, there is provided an air cleaning apparatus for an automobile, wherein the volume resistivity of the resin spacer is set to a value larger than the volume resistivity of the resin coated on the anode of the dust collecting portion, and The insulating property between the dust collecting electrode is further improved.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1A is a diagram showing an electrode configuration of a dust collecting portion of an automotive air cleaning apparatus according to an embodiment of the present invention, wherein 1 is a collector anode formed by laminating an aluminum foil tape with a modified polyolefin resin; Is a collector dust collecting electrode made of aluminum tape, and 3 is a resin spacer made of ABS pressed into the collector dust collecting electrode 2, as shown in FIG. It is press-fitted into spacer insertion openings 2p arranged alternately in the tape width direction. The volume resistivity of the collector anode is 10 ¹² to 10 ¹⁵ Ω · cm, and the volume resistivity of the resin spacer 4 is approximately 10 ¹⁶ Ω · cm. As shown in FIG. 2 (a), the spacer 4 is a cylindrical resin having a length substantially equal to the distance between the collector anodes 1 and a rounded step at both ends, and an upper portion 3a from near the center of the cylinder. Is larger than the diameter of the spacer insertion port 2p and the diameter of the lower portion 3b is made to have a plus tolerance with respect to the diameter of the spacer insertion port 5 and is press-fitted in advance into an aluminum tape as the collector dust collecting electrode 2. .

Therefore, the aluminum tape serving as the collector dust collecting electrode 2 can be held substantially at the center of the two collector anodes 1 and 1 by the resin spacer 3. A uniform electric field can be created between the two. Further, since the volume resistivity of the resin material of the spacer 4 is larger than the volume resistivity of the collector anode, it is possible to prevent a current leaking from the collector anode 1 to the aluminum tape via the spacer 3. Accordingly, the collector voltage does not decrease due to the leakage current, and the electric field between the collector anode 1 and the collector dust collecting electrode 2 becomes uniform, so that the dust collection rate of the air cleaning device can be improved.

As described above, according to the present embodiment, the collector anode 1 is disposed between the collector anode 1 and the collector dust collection electrode 2.
A resin spacer 3 made of ABS or the like having a volume resistivity higher than that of the collector is provided to prevent leakage current due to contact between the collector anode 1 and the collector dust collection electrode 2 and to prevent the collector anode 1 and the collector Since the distance between the dust electrodes 2 is kept constant and the electric field between the collector anode 1 and the collector dust collection electrode 2 is made uniform, it is possible to prevent the collector voltage from lowering and to improve the dust collection rate of the air cleaning device.

In the present embodiment, ABS is used as the material of the spacer, but a resin material such as PP or PET having a larger volume resistivity than the collector anode may be used. In the above example, the spacer 3
Was made equal to the distance between the collector electrodes 1 and 1, but as shown in FIGS.
The distance between the collector anode 1 and the collector dust collection electrode 2 is kept constant even if the length of b is set to about 1/2 of the length between the collector electrodes and the press-fitting direction to the aluminum tape is alternately reversed. Can be kept. Alternatively, as shown in FIG. 3A, a spacer plate 4 in which a plurality of protrusions 4b having guide grooves 4a of aluminum tape are arranged at positions where the aluminum tape is arranged.
As shown in FIG. 3B, the collector anode 1 and the collector dust collection electrode 2 are disposed in advance on the bottom of the collector frame 5, and then the collector anode 1 and the collector dust collection electrode 2 are disposed on the collector frame 3. The distance between the poles 2 may be secured by the resin protrusion 4b. Here, it is needless to say that the width of the projection 4b is substantially equal to the distance between the collector electrodes 1 and 1. The volume resistivity of the material forming the spacer plate 4 is formed of a resin material having a larger volume resistivity than the volume resistivity of the collector anode 1. Therefore, the protrusions 4b keep the distance between the collector anode 1 and the collector dust collection electrode 2 constant and prevent a leakage current from the collector anode 1 to the collector dust collection electrode 2 similarly to the spacer 3 described above. Has functions.

[0011]

As described above, the automotive air purifying apparatus according to the first aspect of the present invention comprises a resin-coated band-shaped anode (collector anode) and a band-shaped cathode (collector dust collection electrode) in a dust collecting portion. The spacer between the collector anode and the collector dust collector is kept constant, and the insulation between the collector anode and the collector collector is maintained. It is possible to prevent the decrease and improve the dust collection rate of the air cleaning device.

According to a second aspect of the present invention, there is provided an air purifying apparatus for an automobile, wherein the volume resistivity of the resin spacer is set to a value larger than the volume resistivity of the resin coated on the anode of the dust collecting portion. Since the insulating property between the collector and the dust collecting electrode is further enhanced, the collector voltage can be more reliably prevented from lowering, and the dust collecting rate of the air cleaning device can be significantly improved.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a structure of a dust collecting unit of an air purifying apparatus for a vehicle according to an embodiment of the present invention.

FIG. 2 is a diagram showing another structure of a dust collecting unit of the air cleaning device for a vehicle according to the embodiment of the present invention.

FIG. 3 is a diagram showing a configuration of a conventional automobile air conditioner.

FIG. 4 is a diagram showing a configuration of a dust collecting unit of a conventional automotive air cleaning device.

[Explanation of symbols]

 1 Collector anode 2 Collector dust collector 3 Spacer

[Procedure amendment]

[Submission date] December 9, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0003

[Correction method] Change

[Correction contents]

[0003]

FIG. 5 (a) shows an example (front view) of a dust collecting portion 21 in which a collector anode 1 is spirally arranged in a collector frame 5 and the collector anode 1 is provided. , A collector dust collecting electrode 2 made of aluminum tape is spirally arranged. For example, as shown in FIG. 5B , the collector dust collecting electrode 2 is formed by bending an aluminum tape into a wave shape so as to keep the distance between the collector anode 1 and the collector anode 1 constant. However, the point x where the collector anode 1 and the collector dust collection electrode 2 are in contact,
In a region where the distance between the two electrodes is short in the vicinity of the contact portion x, a leakage current occurs from the collector anode 1 to the collector dust collection electrode 2, so that the collector voltage decreases and the dust collection rate of the air cleaning device decreases. There was a problem that would. In addition, there is a problem that the effective field pole region for collecting dust particles is reduced, and the dust collection rate is reduced. Therefore,
As shown in FIG. 5 (c), the collector dust collecting electrode 2 is bent by narrowing the wave-like descending bent portion.
Attempts have been made to reduce the contact area with the electrode and the region where the distance between the two electrodes is short, but it has not been possible to effectively prevent current leakage from the collector anode 1. Also figure
5 (b) or FIG. 5 (c), if there is a place where the two electrodes are in contact with each other or a place where the distance between the two electrodes is short, if conductive dust adheres to the vicinity of the contact between the two electrodes, the collector anode However, there is a problem in that the leakage current from No. 1 further increases, and the dust collection rate of the air cleaning device is significantly reduced.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a structure of a dust collecting unit of an air purifying apparatus for a vehicle according to an embodiment of the present invention.

FIG. 2 is a diagram showing another structure of a dust collecting unit of the air cleaning device for a vehicle according to the embodiment of the present invention.

FIG. 3 is a vehicle air purifying apparatus according to an embodiment of the present invention.
It is a figure which shows other structures of the dust collection part of an installation.

FIG. 4 is a diagram showing a configuration of a conventional automobile air conditioner.
is there.

FIG. 5 shows a configuration of a dust collecting portion of a conventional automobile air cleaning device.
FIG.

[Description of Signs] 1 Collector anode 2 Collector dust collection electrode 3 Spacer

Claims (2)

[Claims] 1. A charging unit incorporated in an air conditioning duct of an automotive air conditioner upstream of an evaporator for charging dust particles contained in an air flow to be blown, and disposed in a flow path behind the charging unit. An automotive air cleaning device comprising a resin-coated band-shaped anode and a band-shaped cathode, and a dust collection unit for collecting the charged dust particles,
An air purifying apparatus for automobiles, wherein a resin spacer for keeping a constant interval between the anode and the cathode of the dust collecting portion is mounted. 2. The air purifying apparatus according to claim 1, wherein a volume resistivity of the resin spacer is larger than a volume resistivity of the resin coated on the anode of the dust collecting portion.