JPH10272382A - Air purifying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make an air purifying device compact and make air flow smoothly therein. SOLUTION: An ionizer 12 for charging particles in air, a collector 13 for collecting charged particles, an ozone decomposing filter 14 for decomposing ozone generated in the ionizer 12 and a fan 15 for making air flow from an inflow opening 11a to an outflow opening 11e, are provided successively from the top downward in a casing 11 with an air inflow opening 11d and an air outflow opening 11e. The ionizer 12 and the collector 13 are disposed inside the inflow opening 11a in a manner of encircling the fan 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifier for electrically collecting particles such as dust, bacteria, and odor components floating in the air.

[0002]

2. Description of the Related Art A conventional air purifier of this type has an air inlet 1a formed on one side surface of a vertically long casing 1 and an air outlet 1b provided on an upper portion of the casing 1 as shown in FIG. ing. Inside the casing 1, a fan 2 for circulating the air from the air inlet 1a to the air outlet 1b is provided above, and a charging collector 3 for charging the particles in the air and collecting the charged particles is provided below. It is provided in. In addition, a duct 4 that guides air to the fan 2 is provided behind the charge collection unit 3.

As shown in FIG. 18, an air inlet 5a is formed on the bottom surface of a vertically long casing 5, and
There is also known an air purifying device in which an air outlet 5b is formed in the upper part of the air purifier. In this air purifying apparatus also, a fan 6 is provided on an upper part of a casing 5, and a charging collection part 7 is provided on a lower part.

[0004]

However, the conventional example shown in FIG. 17 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 flow direction of the air is rapidly changed by the duct 4, there is a problem that the pressure loss is large. Further, the conventional example shown in FIG. 18 has a problem that the flow rate of the air is restricted because the width of the air inlet 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 installed on the upper and lower sides. There is a problem that there is.

It is an object of the present invention to provide an air purifying apparatus which solves the above-mentioned problems, is compact, and allows air to flow smoothly.

[0006]

According to the present invention, there is provided an air purifying apparatus, comprising: a casing having an air inlet and an air outlet; and a casing provided inside the casing to supply air from the inlet. A fan to flow through the outlet,
A charging unit is provided between the inflow port and the fan so as to surround the fan, the charging unit collects charged particles while charging particles in the air.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the embodiments shown in FIGS. FIG. 1 is a cross-sectional view of an air cleaning device 10 according to a first embodiment. A cross-section of the casing 11 has a circular arc shape and a generally semi-cylindrical shape.
An ionizer 12 serving as a charging unit, a collector 13 serving as a collection unit, an ozone decomposition filter 14 divided into several parts, and a fan 15 including a drive motor (not shown)
Is 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. And
The ionizer 12 includes a discharge electrode member 21 and a counter electrode member 2.
The collector 13 is formed by combining the counter electrode member 22 and the high voltage electrode member 23, and is arranged so as to surround the fan 15. Although the ozone decomposition filter 14 is also arranged so as to surround the outer periphery of the fan 15, the ozone decomposition filter 14 may be formed as a curved integral body.

[0008] As shown in the perspective view of FIG.
1 includes a flat bottom plate 11a, an arc-shaped top plate 11b, and end plates 11c at both ends, 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. An air inlet 11d is formed in most or more of the top plate 11b, and an air outlet 11e is formed in the rest of the top plate 11b. An electric operation unit 11f is provided on the outer peripheral surface of the casing 11, and the ionizer 12, the collector 13, the fan 1
5. The voltage application means and the control means can be operated. Further, around the fan 15 inside the casing 11, a stabilizer 11g, a rear guide 11h, and a diffuser 11i are formed.

The fan 15 is of a cross flow type in which air flows in from an air inlet 11d and air flows through an ionizer 12, a collector 13 and an ozone decomposition filter 14 to an air outlet 11e. During this time, the ionizer 12 generates corona discharge to charge particles in the air, the collector 13 collects the charged particles by Coulomb force, and the ozone decomposition filter 14 leaks ozone generated by the ionizer 12 to the outside. Disassemble without letting. If a pre-filter (not shown) is provided upstream of the ionizer 12, relatively large particles can be collected in advance.

As shown in the perspective view of FIG. 3, a discharge electrode member 21 constituting a part of the ionizer 12 is integrally pressed from a conductive metal plate. On the inside, a frame plate 21a arranged along the top plate 11b, a plurality of discharge electrode plates 21b provided in parallel to the frame plate 21a downward, and a lower edge of these discharge electrode plates 21b A plurality of air passages 21d formed in the frame plate 21a so as to be located between the projecting many needle-like protrusions 21c and the discharge electrode plate 21b.
Are provided.

As shown in the perspective view of FIG. 4, the counter electrode member 22 constituting the ionizer 12 and the collector 13 is formed of a conductive resin material having a hygroscopic property and a volume resistivity of 10 ⁷ Ωcm or less. This counter electrode member 22 includes
Inside the frame plate 21a of the discharge electrode member 21, the frame plate 21a
And a frame plate 22a arranged along the
A plurality of first opposing electrode plates 22b which are raised from the outer surface of the discharge electrode member 21 and are arranged in parallel to the sides of the discharge electrode plate 21b of the discharge electrode member 21, and the first opposing electrode plates 22b
A plurality of arc-shaped second opposing electrode plates 22c which are lowered so as to be orthogonal to the first electrode plate, and an air passage 22d formed in the frame plate 22a between the first opposing electrode plates 22b are provided. .

As shown in the perspective view of FIG. 5, the high-voltage electrode member 23 constituting a part of the collector 13 has a hygroscopic property and a volume resistivity of 10 ⁸ to 10 ¹³ Ωcm, preferably 10 ¹⁰ to 10 ¹³ Ωcm. It is molded from a 10 ¹³ Ωcm semi-insulating resin material. The high-voltage electrode member 23 includes the counter electrode member 2
A frame plate 23a arranged along the ozone decomposition filter 14 inside the second frame plate 22a, and a second counter electrode plate 2 of the counter electrode member 22 which is raised from the outer surface of the frame plate 23a.
A plurality of arc-shaped high-voltage electrode plates 23b arranged in parallel to the side of 2c and an air passage 23c formed in the frame plate 23a between these high-voltage electrode plates 23b are provided.

When these discharge electrode member 21, counter electrode member 22 and high voltage electrode member 23 are combined, discharge electrode plate 21b of discharge electrode member 21 and first counter electrode plate 22b of counter electrode member 22 alternate. The second counter electrode plate 22 c of the counter electrode member 22 and the high voltage electrode member 23
And the high voltage electrode plates 23b are alternately arranged in parallel. The voltage application 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 projection 21c of the discharge electrode member 21 and the first counter electrode plate 22b of the counter electrode member 22 are connected. An ionizer 12 for generating a corona discharge therebetween, and a collector 13 for generating an electrostatic field between the second counter electrode plate 22c of the counter electrode member 22 and the high voltage electrode plate 23b of the high voltage electrode member 23 are formed.

At this time, a negative voltage is desirably applied to the discharge electrode member 21 and the high-voltage electrode member 23 in order to prevent the needle-like projection 21c from being consumed, and the counter electrode member 22 is grounded. . The voltage applying means applies 3-6 kV, preferably 4.5 kV (280 μV) to the ionizer 12.
A) DC high voltage is applied, and 2 to 4
A high DC voltage of kV, preferably 2.2 kV is applied.

When the air purifying apparatus 10 is started, the control means starts the fan 15 by operating the operation section 11f, and a negative voltage is applied to the discharge electrode member 21 and the high voltage electrode member 23 via the voltage applying means. Applied. Thereby, the air outside the casing 11 is
1 air inlet 11d, air outlet 2 of discharge electrode member 21
1d, the air flows through the air vent 22d of the counter electrode member 22, the air vent 23c of the high voltage electrode member 23, and the air outlet 11e of the casing 11 to the outside 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 counter electrode plate 22b of the counter electrode member 22 in the ionizer 12, and dust, bacteria, odor components, etc. in the air. Are charged and ozone is generated. Then, in the collector 13, an electrostatic field is generated between the high voltage electrode plate 23b of the high voltage electrode member 23 and the second counter electrode plate 22c of the counter electrode member 22, and the second counter electrode plate 22c causes the charged particles to coulomb. Collect by Thereby, the air flowing in from the air inlet 11d becomes purified air and flows out from the air outlet 11e.

FIG. 6 is a cross-sectional view of an air cleaning apparatus 40 according to a second embodiment. A pre-filter 42, an ionizer 43, a collector 44, an ozone decomposition filter 45, and a fan 46 are arranged inside a casing 41. I have. These pre-filter 42, ionizer 43, collector 44
And the cross-sectional shape of the ozone decomposition filter 45 is
6 is formed in a substantially circular arc shape. Casing 41
Bottom plate 41a, top plate 41b, end plate (not shown), air inlet 41d, air outlet 41e similar to those in the first embodiment,
Operation unit (not shown), stabilizer 41g, rear guide 4
1h and a diffuser 11i are provided.

As shown in the assembled perspective view of FIG. 7, the ionizer 43 is constituted by a combination of a discharge electrode member 51 and a counter electrode member 52, and the collector 44 is formed by a counter electrode member 52.
And the high-voltage electrode member 53.

The discharge electrode member 51 is formed of the same conductive metal plate as in the first embodiment. As shown in FIG. 8, the discharge electrode member 51 has a plurality of arc-shaped discharge electrodes surrounding the fan 46. Plate 51a, a connecting plate 51b connecting the ends of these discharge electrode plates 51a, a large number of needle-like projections 51c projecting upward from the upper edge of the discharge electrode plate 51a, and a discharge electrode plate 51a. The air hole 51 formed so as to be located
d is provided.

The counter electrode member 52 is formed from the same conductive resin material as that of the first embodiment. As shown in FIG. 9, the counter electrode member 52 is provided with a discharge electrode plate 51a of the discharge electrode member 51.
A plurality of arc-shaped first opposing electrode plates 52a arranged in the air passage holes 51d in parallel with the discharge electrode plate 51a, and a connecting plate 52 for connecting the ends of the first opposing electrode plates 52a.
b, an arc-shaped second counter electrode plate 52c of the same number or more than the first counter electrode plate 52a projecting downward from the lower edge of the first counter electrode plate 52a; An air port 52d formed between the opposing electrode plates 52a is provided.

The high-voltage electrode member 53 is also made of the same semi-insulating resin material as in the first embodiment. As shown in FIG.
A plurality of substantially arc-shaped high-voltage electrode plates 53a arranged in parallel to the side of the opposite electrode plate 52c;
a high-voltage electrode plate 53a
And an air passage 53c formed therebetween.

The air cleaning device 4 of the second embodiment
0 has the same function as in the first embodiment.

These embodiments can provide the following effects. Although the description has been given with respect to the first embodiment, the same applies to the second embodiment.

(A) The ozone decomposition filter 14 is connected to the fan 15
Since the upper surface of the ionizer 12 is formed along the casing 11 and the lower surface of the collector 13 is formed along the ozone decomposition filter 14, the dead space inside the casing 11 is 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 made smaller than the width of the bottom plate 11a in the short side direction. It can be omitted, and can be made compact and hard to fall down.

(C) Since the top plate 11b is formed in an arc shape and the air inlet 11d and the outlet 11e are provided in the top plate 11b, air can be smoothly circulated from the inlet 11d to the outlet 11e. Thus, airflow loss can be reduced.

(D) Since the relatively heavy fan 15 and its driving motor are installed below the collector 13, the bottom plate 1
In the case of installation with 1a facing down, it is possible to make it hard to fall down.

(E) The discharge electrode member 21 can integrally press the needle-like projection 21c from a conductive metal plate.
Since the high-voltage electrode member 23 can be formed from a synthetic resin material, the manufacturing cost is reduced.

(F) Since the high-voltage electrode member 23 is molded from a semi-insulating resin material having a hygroscopic property, 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 the resistance. And sparks can be prevented.

(G) The applied voltage of the high voltage electrode member 23 is 2 to 4
By setting the voltage to kV, it is possible to prevent a decrease in the resistance and to apply a high voltage, thereby preventing the occurrence of spark and improving the trapping effect.

(H) Since the conventional vertically long air purifying device easily falls over, it is necessary to avoid installing it on the upper surface of a rocker or the like because it involves danger.
No. 0 can be stably installed in an empty space on the upper surface 61a of the rocker 61 as shown in FIG. 11, and the space can be effectively used.

(I) The line of sight L of the occupant H as shown in FIG.
, It is possible to satisfactorily supply clean air to the occupant H without hindering the view of the occupant H and the flow of indoor air.

(J) As shown in FIG.
Even if it is arranged on the upper surface, the stability can be ensured, and the clean air can be diffused to a wide range without obstructing the flow of the indoor air.

(K) As shown in FIG.
If one end plate 11c is provided with a flange 63 or a leg 64,
The bottom plate 11a can be erected so as to be vertical to the floor surface 65, and the two can be arranged together.

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

(M) As shown in FIG. 16, the bottom plate 11a of the casing 11 can be fixed to the side wall 69 of the house for use.

[0037]

As described above, in the air purifying apparatus according to the present invention, since the charging collection portion is arranged so as to surround the fan, the device can be made compact and air can flow from the inlet to the outlet. Can be distributed smoothly.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a first embodiment.

FIG. 2 is a perspective view of a casing.

FIG. 3 is a perspective view of a discharge electrode member.

FIG. 4 is a perspective view of a counter electrode member.

FIG. 5 is a perspective view of a high-voltage electrode member.

FIG. 6 is a cross-sectional view of the second embodiment.

FIG. 7 is a perspective view of an ionizer and a collector.

FIG. 8 is a perspective view of a discharge electrode member.

FIG. 9 is a perspective view of a counter electrode member.

FIG. 10 is a perspective view of a high-voltage electrode member.

FIG. 11 is a perspective view illustrating an application.

FIG. 12 is a side view illustrating an application.

FIG. 13 is a side view illustrating an application.

FIG. 14 is a perspective view illustrating an application.

FIG. 15 is a perspective view illustrating an application.

FIG. 16 is a perspective view illustrating an application.

FIG. 17 is a sectional view of a conventional example.

FIG. 18 is a sectional view of another conventional example.

DESCRIPTION OF SYMBOLS 10, 40 Air cleaning device 11, 41 Casing 11a, 41a Bottom plate 11b, 41b Top plate 11d, 41d Air inlet 11e, 41e Air outlet 12, 43 Ionizer 13, 44 Collector 15, 46 Fan 21, 51 Discharge electrode member 22, 52 Counter electrode member 23, 53 High voltage electrode member 63 Flange 64 Leg 65 Floor 66, 67 Hook 68 Partition 69 Side wall

Claims (8)

[Claims] 1. A casing having an air inlet and an air outlet, a fan provided inside the casing and allowing air to flow from the inlet to the outlet, and surrounding the fan between the inlet and the fan. An air purifying device, which is arranged in such a manner as to charge the particles in the air and collect the charged particles. 2. The air purifying apparatus according to claim 1, wherein a cross section of the charging collection unit has a substantially arc shape. 3. The charge collection portion is formed by a combination of a discharge electrode member, a counter electrode member, and a high voltage electrode member, and the counter electrode member is formed of a conductive resin material having a volume resistivity of 10 ⁷ Ωcm or less. the high voltage electrode member is air cleaning apparatus according to claim 1, volume resistivity was formed of a semi-insulating resin material ¹⁰ 10 ~10 ¹³ Ωcm. 4. A bottom plate of the casing is flattened, a cross section of a top plate of the casing is formed in a substantially arc shape, and the casing is formed in a substantially semicylindrical shape. The air purification device according to claim 1. 5. The air cleaning device according to claim 3, wherein an outer surface of the charge collection unit is shaped along a substantially arc-shaped top plate of the casing. 6. The air cleaning apparatus according to claim 3, further comprising means for vertically supporting the bottom plate of the casing 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 abut the wall surface of the installation portion. 8. The cross flow fan according to claim 1, wherein the fan is a cross flow fan.
An air purifying apparatus according to item 1.