JPH10216559A - Air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To impart sterilizing and deodorizing functions to an air cleaner at a low cost. SOLUTION: An ionizer 2, a collector 3, an ozone eliminating filter 4, and a fan 5 are provided in order from an upper part inside a casing 1. A voltage impressing means in which high tension is impressed to the ionizer 2 and the collector 3 is provided. A control means by which those ionizer 2, collector 3, fan 5, voltage impressing means, etc., are controlled, is provided. The control means is made to have a function wherein the ionizer 2, the collector 3, and the fan 5 are simultaneously started, and even after stopping functioning of the fan 5, functionings of the ionizer 2 and the collector 3 are continued for a specific time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifier which electrically collects particles such as dust, bacteria and odor components floating in the air and sterilizes and deodorizes with ozone.

[0002]

2. Description of the Related Art A conventional air cleaning apparatus of this type includes a blowing means for flowing air from an inlet to an outlet along a flow path, a charging section for charging particles in air by corona discharge, and a charging section for charging particles in the air by corona discharge. It basically includes a collection unit for collecting the collected particles by Coulomb force, and may also include a voltage control unit, an ozone generation unit, an ozone removal unit, and the like.

[0003] In general, it is said that ozone has a good sterilizing and deodorizing power, but if its concentration exceeds 0.1 PPM, it has a bad effect on the human body. For this reason, the air purifier may have a sterilizing and deodorizing function and also have a function of preventing ozone diffusion. For example, the following configuration is known as an air purifying device having such a sterilizing / deodorizing function and a diffusion preventing function.

(A) The air purifying and disinfecting apparatus disclosed in Japanese Patent Application Laid-Open No. 63-252555 shuts off the flow path after stopping the operation of the blowing means, and increases the voltage applied to the charging section by the voltage switching means. The amount of ozone is increased, and a blower dedicated to sterilization is operated to fill the occlusion with ozone. After a predetermined time, the remaining ozone is removed by the ozone remover.

(B) The air purifying apparatus disclosed in Japanese Utility Model Laid-Open Publication No. 2-8551 increases the voltage applied to the charging section by a polarity reversing means when sterilizing and deodorizing the outside of the apparatus, thereby increasing the amount of ozone. Release outside. Then, after the operation of the charging unit is stopped, the ozone removing unit is operated.

(C) The air purifying apparatus disclosed in Japanese Patent Application Laid-Open No. 4-78456 increases the voltage applied to the charging section by the polarity reversing means when sterilizing and deodorizing the outside of the apparatus, thereby increasing the amount of ozone. Ozone that is not removed by the ozone removing means is discharged outside the machine.

(D) The air purifying apparatus disclosed in Japanese Patent Application Laid-Open No. 7-275736 detects the ozone concentration outside the device by the ozone detecting means, and the voltage applied to the charging section is controlled by the voltage controlling means in accordance with the detected concentration. Control and automatically increase or decrease the amount of ozone. And when suddenly sterilizing and deodorizing the outside of the machine,
The voltage is controlled so as to maximize the amount of ozone, and is automatically returned to normal after a predetermined time.

(E) The air purifying apparatus disclosed in Japanese Patent Application Laid-Open No. 8-131880 first activates the ultraviolet sterilizing means at the time of starting, and activates the blowing means and the charging unit after a predetermined time. At the time of the stop, first, the operation of the blowing means and the charging section is stopped, and the ultraviolet sterilizing means is operated intermittently or continuously with a low capacity.

(F) In the air purifying apparatus with a sterilizing function disclosed in Japanese Patent Application Laid-Open No. Hei 8-243432, the collecting section is sterilized and deodorized by ozone generated in the charging section during normal operation. And
When sterilizing the pre-filter near the air inlet,
The air inlet is closed by the flow path closing means and the blowing means is reversed.

[0010]

As described above, the conventional example in which the above-mentioned countermeasures against ozone are taken is a flow path shielding means, a voltage switching means, an ozone-only blowing means, a polarity inversion means, an ozone detection means, a voltage control means, an ultraviolet ray. At least one of a sterilization unit, a channel closing unit, and the like is required. For this reason, the conventional example has a problem that the structure becomes complicated and the cost increases.

An object of the present invention is to solve the above-mentioned problems and to provide an air purifier capable of sterilizing and deodorizing with a simple structure.

[0012]

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. In an air purifying apparatus comprising: a blowing means for flowing to the outlet, and a charging collecting unit for charging particles in the air, which is provided downstream of the inlet, and for collecting charged particles, the operation of the blowing means And a control unit for continuing the operation of the charge collection unit after stopping the operation.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the illustrated embodiment. FIG. 1 is a cross-sectional view of an embodiment, in which an ionizer 2 as a charging unit, a collector 3 as a collecting unit, The ozone removal filter 4 and the fan 5 divided into a plurality are arranged. As shown in FIG. 2, voltage applying means 6 and 7 are connected to the ionizer 2 and the collector 3, and the ionizer 2, the collector 3, the fan 5, and the voltage applying means 6 and 7 have control means 8 connected thereto.
Is connected. The ionizer 2 is constituted by a combination of a discharge electrode member 11 and a counter electrode member 12, and the collector 3 is formed by a counter electrode member 12 and a high voltage electrode member 13.
Are formed.

As shown in the perspective view of FIG.
Is provided with a semi-circular top plate 1a, an air inlet 1b is formed in most of the top plate 1a, and an air outlet 1c is formed in the rest of the top plate 1a. The casing 1 is provided with an operation unit 1d so that the control unit 8 can be operated.

The fan 5 allows air to flow in from the air inlet 1b and to flow through the ionizer 2, the collector 3, and the ozone removal filter 4 to the air outlet 1c. During this time, the ionizer 2 charges the particles in the air by generating corona discharge, and the collector 3
Collects charged particles by Coulomb force, and the ozone removal filter 4 removes unreacted ozone generated in the ionizer 2. At this time, if a pre-filter (not shown) is provided upstream of the ionizer 2, relatively large particles in the air can be preliminarily collected.

As shown in the partial perspective view of FIG. 4, the discharge electrode member 11 is provided with a frame plate 11a disposed inside the air inlet 1b of the casing 1 and a downward parallel to the frame plate 11a. A plurality of discharge electrode plates 11b, a plurality of needle-like protrusions 11c projecting downward from the lower edges of the discharge electrode plates 11b, and a frame plate 11a are formed so as to be located between the discharge electrode plates 11b. And a plurality of air passages 11d.

As shown in the partial perspective view of FIG. 5, the opposite electrode member 12 has a frame plate 12a disposed inside the frame plate 11a of the discharge electrode member 11, and a discharge electrode which is raised from the outer surface of the frame plate 12a. A plurality of first opposed electrode plates 12b arranged in parallel between the discharge electrode plates 11b of the electrode member 11, and a frame plate 1
An air flow formed in the frame plate 12a between the plurality of second opposing electrode plates 12c, which are lowered from the lower surface of 2a so as to be orthogonal to the first opposing electrode plates 12b, and the first opposing electrode plates 12b. The mouth 12d is formed.

Then, as shown in the partial perspective view of FIG.
The high-voltage electrode member 13 includes a frame plate 13a disposed inside the frame plate 12a of the discharge electrode member 12, and a second opposing electrode plate 12c of the discharge electrode member 12 which is raised from the outer surface of the frame plate 13a.
A plurality of high-voltage electrode plates 13b are disposed in parallel between them, and an air passage 13c formed in the frame plate 13a is formed between the high-voltage electrode plates 13b.

When the discharge electrode member 11, the counter electrode member 12 and the high voltage electrode member 13 are combined, the discharge electrode plate 11b of the discharge electrode member 11 and the first counter electrode plate 12b of the counter electrode member 12 are alternately parallel. And the second counter electrode plate 12c of the counter electrode member 12 and the high voltage electrode plate 13b of the high voltage electrode member 13 are alternately disposed. The voltage applying means is connected to the discharge electrode member 11, the counter electrode member 12, and the high voltage electrode member 13, so that the discharge electrode plate 11
b and the first opposing electrode plate 12b
An ionizer 2 that generates a corona discharge between
Is formed between the opposed electrode plate 12c and the high-voltage electrode plate 13b.

At this time, it is preferable that the voltage applying means 6 and 7 generate a DC high voltage of, for example, 3.3 kV (280 μA), and the discharge electrode member 11 and the high voltage electrode member 13 A negative voltage is desirably applied to prevent wear, and a positive voltage is applied to the counter electrode member 12. When the discharge area of the ionizer 2 is equal to or larger than the collection area of the collector 3, the ozone generated by the ionizer 2 can act on the entire surface of the collector 3, and sterilization and deodorization can be performed well. it can.

Here, as shown in the timing chart of FIG. 7, the control means 8 drives the ionizer 2, the collector 3 and the fan 5 simultaneously, but even after the operation of the fan 5 is stopped, the control means 8 The collector 3 is continuously operated for a time T using a timer. This time T is provided to sterilize and deodorize the inside of the apparatus using the ozone generated by the ionizer 2, and since the ozone generated by the ionizer 2 is secondary and very small, 3
It is preferable to set it to 0 minutes or more. At the same time, since the amount of ozone can be expected to increase as the amount of the reaction symmetric substance decreases, it is preferable to set the time T within 60 minutes.

When starting this air purifying device,
The control means 8 drives the fan 5 and, via the voltage applying means 6 and 7, the discharge electrode member 11 and the high voltage electrode member 13
, And a positive voltage is applied to the counter electrode member 12. Thereby, the air outside the casing 1 circulates outside the casing 1 through the air inlet 1b, the air inlet 11d, the air inlet 12d, the air outlet 13c, and the air outlet 1c.

During this time, corona discharge is generated between the discharge electrode plate 11b and the first opposed electrode plate 12b in the ionizer 2, and particles such as dust, bacteria, and odor components in the air are charged and ozone is generated. . Then, in the collector 3, an electrostatic field is generated between the high voltage electrode plate 13b and the second opposing electrode plate 12c, and the second opposing electrode plate 12c collects charged particles by Coulomb force. As a result, the air that has flowed in from the air inlet 1b becomes purified air and becomes the air outlet 1b.
Flow out of c.

Next, even if the operation unit 1d is operated to stop the operation of the air purifying device, the control means 8 stops only the operation of the fan 5, and the operation of the ionizer 2 and the collector 3 is not changed, and the time T is not changed. Just to continue. As a result, the ozone generated as a by-product in the ionizer 2 starts to increase,
The inside of the apparatus is filled while the ozone removal filter 4 prevents leakage. During this time, the collector 3 is provided downstream of the ionizer 2 and the ratio of the density of ozone to air is about 1.66 in a standard state. It reacts with the bacteria, kills them and removes odorous components in the device.

As described above, conventionally, only the ozone generated as a by-product is removed by the ozone removal filter during the operation of the fan, but in the embodiment, the ionizer 2 and the collector are removed while the operation of the fan 5 is stopped. By continuing the operation of 3, the ozone generated by the ionizer 2 by the ionizer 2 can be made to react favorably with the particles collected by the collector 3 while the particles in the air are collected by the collector 3. It is possible to improve the sterilizing and deodorizing effect and prevent the growth of bacteria in the device and the generation of odor at the time of starting or stopping.

Further, the flow path shielding means, the voltage switching means, the ozone-only blowing means, the polarity reversing means, the ozone detecting means, the voltage controlling means, the ultraviolet sterilizing means,
Since no channel closing means or the like is required, the structure can be simplified and the manufacturing cost can be reduced.

The above embodiment can be used in any posture as long as it is not turned upside down. Further, although the discharge electrode 11b having the needle-like protrusions 11c is used as the discharge electrode of the ionizer 2, a linear discharge electrode can be used. Further, although a negative voltage is applied to the discharge electrode member 11 and the high voltage electrode member 13 and a positive voltage is applied to the counter electrode member 12, a reverse voltage may be applied.

[0028]

As described above, in the air purifying apparatus according to the present invention, the operation of the charging means is continued after the operation of the air blowing means is stopped. Therefore, it is possible to sterilize and deodorize while preventing the leakage of ozone. Therefore, the structure can be simplified and the manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment.

FIG. 2 is a block circuit configuration diagram.

FIG. 3 is a perspective view of a casing.

FIG. 4 is a partial perspective view of a discharge electrode member.

FIG. 5 is a partial perspective view of a counter electrode member.

FIG. 6 is a partial perspective view of a high-voltage electrode member.

FIG. 7 is a time chart.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Casing 2 Ionizer 3 Collector 4 Ozone removal filter 5 Fan 6, 7 Voltage application means 8 Control means

Claims (6)

[Claims] 1. A casing having an air inlet and an air outlet, a blower provided inside the casing and allowing air to flow from the inlet to the outlet, and a blower installed downstream of the inlet and having air therein. An air purifying apparatus comprising: a charge collection unit that charges the particles and collects the charged particles; and a control unit that continues the operation of the charge collection unit after stopping the operation of the blowing unit. Characterized air purifier. 2. The air purifying apparatus according to claim 1, wherein the control means stops the operation of the charge collection unit within a predetermined time. 3. The air purifying apparatus according to claim 1, further comprising an ozone removing unit for removing ozone downstream of the charge collection unit. 4. The air purifying apparatus according to claim 3, wherein said blowing means is provided downstream of said ozone removing means. 5. The air purifying apparatus according to claim 1, further comprising a pre-filter upstream of the charge collection unit for preliminarily collecting particles in the air. 6. The charging unit according to claim 1, wherein the charging unit comprises a charging unit for charging the particles in the air, and a collecting unit provided downstream of the charging unit for collecting the charged particles. Any one
An air purifying device according to one of the claims.