WO1998033596A1

WO1998033596A1 - Air cleaner

Info

Publication number: WO1998033596A1
Application number: PCT/JP1998/000245
Authority: WO
Inventors: Kiyoshi Toida; Makoto Nozawa; Daisuke Takahashi
Original assignee: Midori Anzen Co., Ltd.
Priority date: 1997-01-31
Filing date: 1998-01-22
Publication date: 1998-08-06
Also published as: KR20000064812A; EP0896835A4; KR100338246B1; CN1216007A; EP0896835A1; DE69829805T2; DE69829805D1; EP0896835B1

Abstract

An ionizer (12) for electrification of particles in the air, a collector (13) for trapping charged particles, an ozone decomposition filter (14) for decomposition of ozone generated on the ionizer (12), and a fan (15) for feeding the air from an air inflow port (11d) to an air outflow port (11e) are provided successively in this order from upward in a casing (11) having the air inflow port (11d) and the air outflow port (11e). The ionizer (12) and the collector (13) are disposed to surround the fan (15) inside the air inflow port (11d).

Description

Satsuki Tsutoda:

Technical field

TECHNICAL FIELD The present invention relates to an air cleaning device that electrically collects particles such as dust, bacteria, and odor components floating in the air. BRIEF DESCRIPTION OF THE FIGURES

F 1 g.1 is a sectional view of a conventional example.

FIG. 2 is a sectional view of another conventional example.

Flg-3 is a cross-sectional view of the embodiment of the younger brother I.

Fig. 4 is a perspective view of Kaen Nok.

FIG. 5 is a perspective view of a discharge electrode member.

FIG. 6 is a perspective view of the counter electrode member.

FIG. 7 is a perspective view of a high-voltage electrode member.

FIG. 8 is a cross-sectional view of the second embodiment.

FIG. 9 is a perspective view of the ionizer and the collector.

FIG. 10 is a perspective view of a discharge electrode member.

FIG. 11 is a perspective view of a counter electrode member.

FIG. 12 is a perspective view of the high-voltage electrode member.

FIG. 13 is a perspective view for explaining the application.

FIG. 14 is a side view for explaining the application.

FIG. 15 is a side view for explaining the application.

FIG. 16 is a perspective view for explaining the application.

FIG. 17 is a perspective view for explaining the application.

FIG. 18 is a perspective view illustrating an application. Background art

A conventional air purifying device of this type has an air inlet 1a formed on one side surface of a vertically long casing 1 as shown in FIG. 1, and an air outlet 1b provided at an upper portion of the casing 1. ing. Inside the casing 1, a fan 2 for circulating the air from the air inlet 1a to the air outlet 1b is provided at an upper portion, and a charging collector for charging the particles in the air and collecting the charged particles. 3 is provided below. Further, a duct 4 for guiding air to the fan 2 is provided at the back of the charge collection unit 3. Also, as shown in FIG. 2, there is known an air purifying device in which an air inlet 5a is formed at the bottom of a vertically long casing 5 and an air outlet 5b is formed at an upper part of a casing 5. . Also in this air purifying device, a fan 6 is provided at an upper part of a casing 5 and a charge collection part 7 is provided at a lower part.

However, the conventional example shown in FIG. 1 has a problem that it is difficult to reduce the size because the duct 4 is provided behind the charge collection unit 3. Further, since the direction of air flow is rapidly changed by the duct 4, there is a problem that pressure loss is large. Further, in the conventional example shown in FIG. 2, there is a problem that the flow rate of the air is restricted because the frontage of the air inflow 5a is narrow. In both of the conventional examples, the casings 1 and 5 are vertically long, and the fans 2 and 6 and the charge collection units 3 and 7 are respectively provided on the upper and lower sides. There is a problem that is.

An object of the present invention is to solve the above-mentioned problems and to provide an air purifying apparatus which is compact and allows air to flow smoothly. Disclosure of the invention

An air purifying apparatus according to the present invention includes: a casing having an air inlet and an outlet; a fan provided inside the casing to allow air to flow from the inlet to the outlet; and surrounding the fan between the inlet and the fan. And a charge collection unit that collects the charged particles while charging the particles in the air, so that downsizing can be realized and the flow of air is improved. BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail with reference to the embodiments shown in FIGS. 3 to 18.

FIG. 3 is a cross-sectional view of the air purifying apparatus 10 of the first embodiment. The casing 11 has a circular cross section and a substantially semi-cylindrical shape as a whole. An ionizer 12 as a collector, a collector 13 as a collector, an ozone decomposition filter 14 divided into several parts, and a fan 15 including a drive motor (not shown) are arranged. Voltage applying means (not shown) is connected to the ionizer 12 and the collector 13, and control means (not shown) is connected to the ionizer 12, the collector 13, the fan 15, and the voltage applying means. The ionizer 12 is constituted by a combination of a discharge electrode member 21 and a counter electrode member 22, and the collector 13 is formed by a combination of a counter electrode member 22 and a high-voltage electrode member 23. It is arranged to surround 15. Although the ozone decomposition filter 14 is also arranged so as to surround the outer periphery of the fan 15, it can be formed as a curved integral body.

As shown in the perspective view of FIG. 4, the casing 11 includes a flat bottom plate 1 la, an arc-shaped top plate 1 1 b, and end plates 1 1 c at both ends. The height at the top of 1b is smaller than the width of the bottom plate 11a in the short side direction. An air inlet 11d is formed in most of the top plate 11b, and an air outlet 11e is formed in the rest of the top plate 11b. An electrical operation unit 11 f is provided on the outer peripheral surface of the casing 11 so that the ionizer 12, the collector 13, the fan 15, the voltage applying unit, and the control unit can be operated. Further, around the fan 15 inside the casing 11, a stabilizer 11g, a guide 11h and a diffuser 11i are formed.

The fan 15 is of a cross-flow type that allows air to flow in from the air inlet 11 d and air to flow through the ionizer 12, collector 13 and ozone decomposition filter 14 to the air outlet 11e. . During this time, the ionizer 12 charged the particles in the air by generating corona discharge, the collector 13 collected the charged particles by Coulomb force, and the ozone decomposition filter 14 was generated by the ionizer 12 Decomposes ozone without leakage. If a pre-filter (not shown) is provided upstream of the ionizer 12, relatively large particles can be collected in advance. Can be.

As shown in the perspective view of FIG. 5, the discharge electrode member 21 constituting a part of the ionizer 12 is integrally breathed from a conductive metal plate. A frame plate 2 1a arranged along the top plate 1 1b inside the air inlet 1 1d, and a plurality of discharge electrode plates 2 1 provided in parallel with the frame plate 21a downward. b, a large number of needle protrusions 21 protruding downward from the lower edges of these discharge electrode plates 21b, and the frame plate 21a so as to be located between the discharge electrode plates 21b. There are provided a plurality of air passages 21 d formed at the bottom.

F i. As shown in the perspective view of 6, ionizer 1 2 and the collector 1 3 counter electrode member 2 2 that make up the volume resistivity has hygroscopicity 1 0 ⁷ Omega cm less conductive resins materials It is molded from. The counter electrode member 22 includes a frame plate 22 a disposed inside the frame plate 21 a of the discharge electrode member 21 along the frame plate 21 a, and a frame plate 22 a A plurality of first opposing electrode plates 2 2b which are raised from the outer surface and arranged in parallel to the side of the discharge electrode plate 2 1b of the discharge electrode member 21; Formed on the frame plate 2 2a between a plurality of arc-shaped second counter electrode plates 2 2c, which are lowered so as to be orthogonal to the counter electrode plate 2 2b, and the first counter electrode plate 2 2b Air inlet 22d is provided.

Then, F ig. As shown in the perspective view of 7, the collector 1 high pressure electrode member 2 3 constituting a part of the 3 hygroscopic, volume resistivity ^{^{1 0 8 ~ 1 0 1 3}} Q cm Preferably, it is formed from a semi-insulating resin material of 101 ^Q to 101 ³ Ωcm. The high piezoelectric electrode member 23 includes a frame plate 23 a disposed inside the frame plate 22 a of the counter electrode member 22 along the ozonolysis filter 14, and a frame plate 23 a A plurality of arc-shaped high-voltage electrode plates 23 b that are raised from the outer surface and arranged in parallel to the side of the second counter electrode plate 22 c of the counter electrode member 22, and these high-voltage electrode plates 23 b An air port 23c formed in the frame plate 23a is provided between the two.

When the discharge electrode member 21, the counter electrode member 22 and the high-voltage electrode member 23 are combined, the discharge electrode plate 21 b of the discharge electrode member 21 and the first opposing electrode member 22 are opposed to each other. The electrode plates 2 2 b are alternately arranged in parallel, and the second opposed electrode plate 2 2 c of the opposed electrode member 22 and the high voltage electrode plates 2 3 b of the high voltage electrode member 23 are alternately arranged in parallel. You. So Then, the voltage applying means is connected to the discharge electrode member 21, the counter electrode member 22, and the high-voltage electrode member 23, so that the needle-like protrusion 21 c of the discharge electrode member 21 and the counter electrode member 22 are connected. An ionizer 12 for generating a corona discharge between the first counter electrode plate 2 2b and the second counter electrode plate 2 2c of the counter electrode member 22 and the high voltage electrode plate 2 of the high voltage electrode member 2 3 A collector 13 that generates an electrostatic field is formed between the collector 13 and the gate 3b.

At this time, a negative voltage is desirably applied to the discharge electrode member 21 and the high-voltage electrode member 23 to prevent the needle-like protrusion 21 c from being consumed, and the counter electrode member 22 is grounded. ing. The voltage applying means applies a high DC voltage of 3 to 6 kV, preferably 4.5 kV (280 αA) to the ionizer 12 and 2 to 4 kV to the collector 13. A high voltage of DC, preferably 2.2 kV, is applied. When the air purifying apparatus 10 is started, the control unit starts the fan 15 by operating the operation unit 11 f, and applies a negative voltage to the discharge electrode member 21 and the high-voltage electrode member 23 via the voltage applying means. Is applied. As a result, the air outside the casing 11 becomes the air inlet 11 d of the casing 11, the air inlet 21 d of the discharge electrode member 21, the air inlet 22 d of the counter electrode member 22, The air flows to the outside of the casing 11 through the air inlet 23 c of the high-voltage electrode member 23 and the air outlet 11 e of the casing 11.

During this time, a corona discharge occurs between the needle-like projection 21c of the discharge electrode member 21 and the first opposing electrode plate 22b of the opposing electrode member 22 in the ionizer 12 to cause dust in the air. Particles such as bacteria and odor components are charged and ozone is generated. In the collector 13, an electrostatic field is generated between the high voltage electrode plate 23 b of the high voltage electrode member 23 and the second counter electrode plate 22 c of the counter electrode member 22, and the second counter electrode The plate 22c collects the charged particles by Coulomb force. As a result, the air flowing in from the air inlet 11 d becomes purified air and flows out from the air outlet □ 1 le.

FIG. 8 is a cross-sectional view of the air purifying apparatus 40 of the second embodiment, in which a pre-filter 42, an ionizer 43, a collector 44, an ozone decomposing filter 45, Juan 46 is located. The cross-sectional shapes of the pre-filter 42, the ionizer 43, the collector 44, and the ozone decomposition filter 45 are substantially arc-shaped so as to surround the fan 46. First implementation for casing 41 Bottom plate 41 a, top plate 41 b, not shown, end plate not shown, air inlet 41 d, air outlet b 41 e, operation unit not shown, stabilizer 41 g, rear guide 41 h and A diffuser 1 1 i is provided.

9, the ionizer 43 includes a combination of a discharge electrode member 51 and a counter electrode member 52, and the collector 44 includes a counter electrode member 52 and a high-voltage electrode member 53. Are formed.

The discharge electrode member 51 is formed of the same conductive metal plate as that of the first embodiment. As shown in FIG. 1 〇, the discharge electrode member 51 has a plurality of arc-shaped members surrounding the fan 46. A discharge electrode plate 51a, a connecting plate 51b connecting the ends of these discharge electrode plates 51a, and a number of needle-like protrusions projecting upward from the upper edge of the discharge electrode plate 51a. A projection 51 c and an air hole 51 d formed so as to be located between the discharge electrode plates 51 a are provided.

The counter electrode member 52 is formed of the same conductive resin material as that of the first embodiment, and as shown in FIG. 11, the counter electrode member 52 includes the discharge electrode plate 51 of the discharge electrode member 51. a plurality of arc-shaped first counter electrode plates 52a arranged in the air passage hole 51d of a in parallel with the discharge electrode plate 51a; and a plurality of arc-shaped first counter electrode plates 52a. A connecting plate 52b for connecting the ends and an arc of the same number or more than the first counter electrode plate 52a protruding downward from the lower edge of the first counter electrode plate 52a. The second counter electrode plate 52 c and the air passage □ 52 d formed between the first counter electrode plate 52 a are provided.

The high-voltage electrode member 53 is also formed of the same semi-insulating resin material as in the first embodiment, and as shown in FIG. A plurality of substantially arc-shaped high-voltage electrode plates 53a arranged parallel to the sides of the opposite electrode plate 52c, and a connecting plate 53b connecting the ends of these high-voltage electrode plates 53a. An air passage □ 53 c formed between the high-voltage electrode plates 53 a is provided.

The air purifying device 40 of the second embodiment operates in the same manner as the first embodiment, and these embodiments can obtain the following effects. The description is the same as that of the second embodiment. (a) The ozone decomposition filter 14 is arranged along the outer periphery of the fan 15, the upper surface of the ionizer 12 is formed along the casing 11, and the lower surface of the collector 13 is connected to the ozone decomposition filter. Since it is formed so as to conform to 14, the dead space inside the casing 11 can be reduced, and the size can be reduced.

(b) The bottom plate 11a of the casing 11 is made flat and the height of the top of the top plate 11b is smaller than the width of the bottom plate 11a in the short side direction. This saves space and makes it more compact and harder to fall.

(c) The top plate 11b is formed in an arc shape, and the air inlet 11d and the outlet 11e are provided on the top plate 11b, so that the air flows from the inlet 11d to the outlet 11b. e can be circulated smoothly and the airflow loss can be reduced.

(d) Since the relatively heavy fan 15 and its driving motor are installed below the collector 13, when the bottom plate 11a is installed downward, the fan 15 can be prevented from falling down.

(e) As for the discharge electrode member 21, the needle-like protrusion 21 c can be integrally pressed from a conductive metal plate, and the counter electrode member 22 and the high-voltage electrode member 23 can be formed from a synthetic resin material, thereby reducing manufacturing costs. I do.

(f) Since the high-voltage electrode member 23 is molded from a semi-insulating resin material having hygroscopicity, even if conductive dust is mixed in the air, the movement of the electric charge of the high-voltage electrode member 23 is limited by resistance. And sparks can be prevented.

(g) By setting the applied voltage of the high-voltage electrode member 23 to 2 to 4 kV, it is possible to prevent a decrease in the resistance and to apply a high voltage, thereby preventing the generation of sparks and improving the collection effect. .

(h) Since the conventional vertically long air purifying device is easy to fall over, it is necessary to avoid installing it on the upper surface of a rocker or the like because it is dangerous. As shown in 13, stable installation is possible in the empty space of the upper surface 61a of the rocking force 61, and the space can be effectively used.

(i) As shown in Fig. 14, if it is installed at a position slightly lower than the height of the line of sight L of the occupant H, clean air can be It is possible to supply the seat H well.

(j) Even if it is arranged on the upper surface of the rocker 62 as shown in Fig. 15, it is possible to secure stability and to diffuse clean air over a wide area without obstructing the flow of indoor air. Can be.

(k) As shown in F i. 16, if flange 63 or leg 64 is provided on one end plate 11 c of casing 11, bottom plate 11 a will be vertical to floor surface 65 As well as the two can be arranged together.

(1) As shown in FIG. 17, if hooks 66 and 67 are provided on the bottom plate 11 a or the end plate 11 c of the casing 11, it can be used by hanging it on the partition 68.

(m) As shown in F i. 18, the bottom plate 11 a of the casing 11 can be fixed to the side wall 69 of the house for use. Industrial applicability

As described above, in the air cleaning device according to the present invention, the charge collection unit is arranged so as to surround the fan, so that the air purifying device can be made compact and the air can be smoothly circulated from the inlet to the outlet. Can be.

Claims

Speculation of Word

1. A casing having an air inlet and an air outlet, a fan installed inside the casing and allowing air to flow from the inlet to the outlet, and the fan between the inlet and the fan. An air purifying device, comprising: a charging unit that charges the particles in the air and collects the charged particles.

2. The air purifying apparatus according to claim 1, wherein a cross section of the charge collection unit is substantially arc-shaped.

3. The charge collecting unit discharge electrode member, formed by the union Align the electrode member and the high voltage electrode member, said electrode member has a volume resistivity formed from 10 ⁷ Qcm or less of the conductive resin material, the high pressure electrode member air cleaning apparatus according to claim 1, volume resistivity was formed of a semi-insulating resin material 1 0 ^1Q ~10 ¹³ Ω _cm.

4. The bottom plate of the casing is made flat, the cross section of the top plate of the casing is made substantially arc-shaped, and the casing is made substantially semi-cylindrical, and the outflow port and the inflow port are provided on the top plate. An air purifying apparatus according to item 1.

5. The air purifying apparatus according to claim 3, wherein an outer surface of the charge collection unit is formed along a substantially arc-shaped top plate of the casing.

6. The air purifying apparatus according to claim 3, further comprising means for supporting the bottom plate of the casing vertically on the floor surface of the installation portion.

7. The air purifying apparatus according to claim 3, further comprising means for suspending the bottom plate of the casing so as to contact the wall surface of the installation portion.

8. The air purifying apparatus according to claim 1, wherein the fan is a cross flow fan.

Claims of amendment

[April 15, 1996 (15.0 4.96) Accepted by the International Bureau: Claims at the time of filing were corrected; Claims 7 at the time of filing were withdrawn; Was done. (1 page)]

1. A casing having an air inlet and an air outlet, a fan provided inside the casing to allow air to flow from the inlet to the outlet, and disposed between the inlet and the fan. A charging section for charging particles in the air, and a collecting section disposed downstream of the charging section for collecting charged particles, wherein the charging section and the collecting section are arranged so as to surround the fan. In addition, the high-pressure electrode plate and the counter electrode plate of the collection unit are arranged in a direction orthogonal to the axis of the fan.

2. The air cleaning device according to claim 1, wherein the discharge electrode plate and the counter electrode plate of the charging unit are arranged in a direction orthogonal to an axis of the fan.

3. The empty space according to claim 1, wherein a cross section of the charging unit and the collection unit is substantially arc-shaped.

4. The air purifying apparatus according to claim 1, wherein the inlet and the outlet are provided on a top plate of the casing.

5. The bottom plate of the casing is flattened, the cross section of the top plate of the casing is substantially arcuate, and the casing is substantially semi-cylindrical. The outer surfaces of the charging unit and the collection unit are substantially circular in the casing. 2. The air purifying device according to claim 1, wherein the air purifying device has a shape along the arc-shaped top plate.

6. The charging unit and the collection unit are formed by a combination of a discharge electrode member, a counter electrode member including the counter electrode plate, and a high voltage electrode member including the high voltage electrode plate, and the counter electrode member is volume-specific. resistance is formed from 1 0 ⁷ Omega cm or less of the conductive resin material, the high voltage electrode member according to claim 1, volume resistivity was formed 1 0 ^{1 Q} ~ 1 0 ¹ a ³ Omega cm semi-insulating resin material or al An air purifying apparatus according to item 1.

7. The air purifying apparatus according to claim 1, wherein the fan is a cross flow fan.

8. (Deleted)

10 Amended paper (Article 19 of the Convention) (: 1 1 ¹ Statements pursuant to Article 19 (1) Claims 1-7 have been replaced by amended Claims 117. Claim 8 has been deleted.