JPS62299267A - Air purifier - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention [Field of Industrial Application] The present invention provides an electrostatic precipitator air purifier that efficiently collects dust, cigarette smoke, etc. floating indoors. Regarding.

[Conventional technology]

In order to obtain higher collection performance in an electrostatic precipitator air purifier, the narrower the electrode spacing in the collection section, the more effective it is. This is because when smoke particles charged by corona discharge pass through an electric field, the distance they travel toward the dust collection pole due to Coulomb force is short. Practically speaking, in consideration of the processing accuracy of the electrodes, the amount of dust retained on the electrode plates, etc., the electrode spacing in the dust collecting section is set to about 5 to 10 mm.

Electric air cleaners have been put into practical use since a few dozen years ago, and their structure is described in, for example, Dust Collection Engineering (published by Nikkan Kogyo Shimbun Co., Ltd., Kou Iitani, S55.10.7). In the conventional method, as shown in Fig. 3, the particle charging part and the dust collecting part are integrated, and the dust collection is mostly on the inflow side of the airflow (2), as shown in 10 in Fig. 3, and on the outflow side. It's becoming less and less. After a certain period of operation, the collected dust layer narrows the electrode spacing, and spark discharge begins to occur on the gas inflow side of the dust collection section. 8 In this state, it is necessary to take out the electrode from the device and clean it by washing with water.

[Problem that the invention seeks to solve]

The electrode unit in the dust collection section usually consists of about 30 electrode plates, and the electrode spacing in the dust collection section is as narrow as 5~lo+a as mentioned above, and it is difficult to avoid sticky substances such as cigarette smoke. There is a problem in that cleaning is time consuming due to the dust attached, and furthermore, the air purifier cannot perform its function during cleaning.

In order to extend the cleaning period using the conventional method, it is conceivable to widen the electrode spacing in the dust collection section, but this has the disadvantage that the dust collection performance decreases.

An object of the present invention is to provide an air cleaner configured to reduce the frequency of electrode cleaning to approximately 172 times compared to the conventional method.

[Means for solving the problem] In other words, the present invention focuses on the fact that the amount of dust collected on the dust collection electrode plate increases on the air inflow side and gradually decreases as it approaches the air outflow side. It is characterized by having a structure in which the particle charging part and the dust collecting part are separated, and only the dust collecting part has a structure in which the air inflow side and the air outflow side can be switched.

[Effect]

By replacing the inflow and outflow sides of the electrodes in the dust collection section, there is almost no dust adhering to the air inflow side of the dust collection electrode, and it can continue to perform its dust collection function. Ultimately, the system can be operated until the dust is evenly deposited on both the mantle and outlet sides of the dust collecting electrode, and the operating period is approximately twice that of the conventional system.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an air cleaner according to the present invention will be described below with reference to FIG. 1 is air inflow hole, 2 is air outflow hole, 3
indicates a filter that removes rough particles of several tens of μm or more, 4
This is a part that applies electric charge to dust particles, and is composed of a high-voltage electrode 51 and a dust collection electrode 52, and a plurality of both electrodes are arranged. A voltage is independently applied between the discharge electrode 41 and the high voltage pole 51 from the high voltage generator 8 . Particle charging section 4 and dust collection section 5
are separated, and the arrangement of the air inflow side and the air outflow side of the dust collecting section 5 can be rotated 180 degrees by taking out the electrodes. 6 is an activated carbon layer that removes bad odors, 7 is a suction fan, 9
and 9' indicate the direction of airflow.

Regarding the action and effects of the air purifier of the present invention.

Dust in the air flowing in through six air inflow holes 1, which will be described in detail below, is guided to a single particle charging section 4 after coarse dust is removed by a filter 3. Dust particles in the airflow are charged by the corona discharge that occurs between the discharge electrode 41 and the ground electrode 42,
Next, it is introduced into the dust collecting section 5. The high voltage pole 51 and the dust collection electrode 52 are composed of parallel flat plates, and an equal electric field is formed between the two poles, so charged particles passing through the dust collection part are collected by the dust collection electrode 52 by Coulomb force. . Regarding the collection of dust particles in the dust collection section 5, since the dust concentration is high on the inflow side, the amount of dust particles adhering to the inflow side is large.

The collection situation is shown in Figure 3. In other words, since almost no dust adheres to the air outflow side of the dust collecting electrode 52, if the dust collecting section 5 is rotated 180 degrees with respect to the airflow direction after a certain period of operation, dust will be deposited over the entire surface of the dust collecting electrode 52. It can effectively collect dust. Therefore, the operating period of the air cleaner can be approximately doubled compared to the conventional one.

As another example, as shown in Figure 2, if the particle charging section and the dust collection section are not separated, the particle charging section is also provided on the air outflow side, and the entire electrode is rotated 180 degrees. It also shows the same effect as the present invention.

〔Effect of the invention〕

According to the present invention, it is possible to reduce the frequency of electrode cleaning to half of the conventional rate, and to provide an air cleaner with excellent maintainability.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of an embodiment of an air purifier according to the present invention,
FIG. 2 is an electrode configuration diagram of another embodiment of the present invention, and FIG. 3 is a diagram showing the state of dust adhesion to the dust collection electrode. 4...Particle charging section.

Claims (1)

[Claims] 1. An air cleaner comprising a particle charging section including a discharge electrode and a ground electrode, and a dust collection section including a high voltage electrode and a dust collection electrode, wherein the particle charging section and the dust collection section 1. An air purifier characterized in that each dust collecting part is arranged independently, and the electrodes of the dust collecting parts are configured such that an air inflow side and an air outflow side can be switched.