TW201638532A - Low-ozone electrostatic precipitator air cleaner - Google Patents

Abstract

A low-ozone electrostatic precipitator air cleaner includes a charging chamber, a collecting chamber, a flowing device, at least one carbon fiber bundle, a grid, at least one high voltage electrode and at least one collecting electrode in the collecting chamber. The charging chamber has a first inlet and a first outlet, and the collecting chamber has a second inlet and a second outlet, wherein the second inlet is in communication with the first outlet. The flowing device is adapted to direct an air flow through the charging chamber and the collecting chamber in sequence. The carbon fiber bundle is disposed in the charging chamber and is adapted to charge particles in the air flow. The grid is disposed between the charging chamber and the collecting chamber. The high voltage electrode and the collecting electrode are both disposed in the collecting chamber, in which the collecting electrode is parallel to the high voltage electrode, and a channel for the air flow is defined therebetween.

Description

Low ozone electrostatic dust removal air purifier

[1] The present invention relates to an air cleaning device, and more particularly to an electrostatic dust collecting device capable of reducing the amount of ozone generated.

[2] In recent years, the air pollution of PM 2.5 and nano particles has gradually attracted the attention of the world. Long-term exposure to high concentrations of PM 2.5 and nano particles will have a negative impact on health. Therefore, effective means are needed to remove air. PM 2.5 and nano particles. [3] Electrostatic precipitators are a kind of air cleaning equipment commonly used to remove particles. Typical electrostatic precipitators can use the principle of corona discharge to charge particles. These charged particles can be deflected in the electric field to be collected electrodes. The board is collected. However, one of the disadvantages of the conventional electrostatic precipitator is that ozone is easily generated, and if the ozone generated by the corona discharge is directly discharged to the outside, it may also cause harm to the human body.

[4] In view of the above, it is a primary object of the present invention to provide an electrostatic precipitator air purifier which can reduce the amount of ozone generated. [5] In order to achieve the foregoing objective, the present invention provides a low-oxygen electrostatic dust removal air purifier comprising a charging chamber, a dust collecting chamber, a fluid device, at least one carbon fiber bundle, a grid, at least one high voltage electrode plate and At least one collecting electrode plate. The charging chamber has a first air inlet and a first air outlet, the dust chamber has a second air inlet and a second air outlet, and the second air inlet is connected to the first air outlet. The fluid device is configured to guide a gas flow sequentially through the charging chamber and the dust collecting chamber, wherein the carbon fiber bundle is disposed in the charging cavity for charging particles in the airflow, and the grid is disposed in the charging Between the chamber and the dust collecting chamber, the high-pressure electrode plate and the collecting electrode plate are both disposed in the dust collecting chamber, and the collecting electrode plate is parallel to the high-voltage electrode plate and a flow path for airflow is formed therebetween . [6] With the above design, the carbon fiber bundle can charge the particles in the gas flow at a lower working voltage, thereby reducing the amount of ozone generated, and the charged particles can be collected by the grid and the collecting electrode plate, and the particle collecting efficiency is collected. High, it can effectively remove particles from the air.

[8] Please refer to FIGS. 1 to 3, the low ozone electrostatic dust removal air purifier (hereinafter referred to as air purifier) disclosed in the first embodiment of the present invention includes a charging chamber 10, a dust collecting chamber 20, and a fluid device 30. A four carbon fiber bundle 40, a grid 50, five high voltage electrode plates 60, six collecting electrode plates 70, and a casing 80. [9] The charging chamber 10 and the dust collecting chamber 20 are surrounded by the housing 80. The charging chamber 10 has a first air inlet 11 and a first air outlet 12, and the dust collecting chamber 20 has a second air inlet. The port 21 and a second air outlet 22 communicate with the first air outlet 12. The housing 80 may be made of an insulating material. [10] The fluid device 30 is configured to guide a gas flow sequentially through the charging chamber 10 and the dust collecting chamber 20, so that the airflow enters the charging chamber 10 via the first air inlet 11 and exits the dust collecting chamber 20 from the second air outlet 22. It can be realized by creating a difference in air pressure between the first air inlet 11 and the second air outlet 22, for example, a fan 31 can be disposed downstream of the dust collecting chamber 20; in other possible embodiments, A fan can be placed upstream of the charging chamber instead. [11] The carbon fiber bundle 40 is disposed in the charging chamber 10, and the carbon fiber bundle 40 is a collection of a plurality of carbon fibers. The carbon fibers are substantially parallel and of equal length. The carbon fibers may be bound and fixed by an insulating material such as a heat shrinkable sleeve. The direction of extension is substantially parallel to the direction of the gas flow, the tips of the carbon fibers are directed toward the grid 50, and the carbon fiber bundles 40 are spaced apart from each other. In the present embodiment, the four carbon fiber bundles 40 are arranged in a square shape. The carbon fiber bundle 40 is electrically connected to the high voltage power source, and the voltage applied to the carbon fiber bundle 40 can ionize the air, and the conductive grid 50 can be grounded, so that an electric field can be formed between the carbon fiber bundle 40 and the grid 50, thereby allowing passage. The particles of the charging chamber 10 are charged and a portion of the charged particles are collected by the grid 50. In order to facilitate the removal of the particles collected by the grid 50, the grid 50 can be movably disposed between the charging chamber 10 and the dust collecting chamber 20 via the grid opening 81 on the housing 80. When the grid 50 is to be cleaned, The grid 50 is withdrawn from the grid opening 81, and the portion of the grid 50 exposed to the housing 80 is provided with a handle 51 for the user to grasp. The grid 50 can be made of stainless steel or other electrically conductive material. [12] The high-voltage electrode plate 60 and the collecting electrode plate 70 are arranged in the dust collecting chamber 20 in a staggered interval, and the electrodes on the two sides are all collecting electrode plates 70, thereby improving the space use efficiency. The collecting electrode plate 70 is parallel to the high voltage electrode plate 60 with a flow path for airflow therebetween. The high voltage electrode plate 60 can be electrically connected to the high voltage power source, the polarity of which can be the same polarity as the voltage applied to the carbon fiber bundle 40, and the collecting electrode plate 70 can be grounded to form an electric field between the high voltage electrode plate 60 and the collecting electrode plate 70, and is charged. The particles are collected by the collecting electrode plate 70 after being subjected to an electric field. Preferably, the collecting electrode plates 70 are movably inserted into the dust collecting chamber 20 via the electrode openings 82 on the housing 80. When the collecting electrode plates 70 are to be cleaned, the collecting electrode plates 70 can be withdrawn from the electrode openings 82. For cleaning, the portion of the collecting electrode plate 70 exposed to the housing 80 may be provided with a handle 90 for the user to grasp. Preferably, a single handle 90 is used to simultaneously connect to the plurality of collecting electrode plates 70. The handle 51 and the handle 90 can be made of an insulating material. [13] In order to allow the airflow entering the discharge chamber 10 to be evenly distributed, the air cleaner may further include a porous plate 100 disposed at the first air inlet 11 of the charging chamber 10, and the airflow through the porous plate 100 may flow through the porous A plurality of holes in the plate 100 are more evenly distributed throughout the charging chamber 10. [14] The air cleaner of the present invention can be used for, but not limited to, cleaning indoor air. In use, the air is sequentially introduced into the charging chamber 10 and the dust collecting chamber 20, and the carbon fiber bundle 40 in the charging chamber 10 can ionize the air, and Since each carbon fiber bundle 40 contains a large number of carbon fibers and a small diameter, the air can be ionized and the particles in the air can be charged at a lower operating voltage, and a uniform electric field is formed between the carbon fiber bundle 40 and the grid 50. So that some of the charged particles can be collected by the grid 50, and the remaining charged particles enter the dust collecting chamber 20, and since the high voltage electrode plate 60 and the collecting electrode plate 70 also have an electric field, the charged particles can finally be collected by the electrode plate 70. collect. [15] It should be noted that the number of the carbon fiber bundle 40, the high voltage electrode plate 60, and the collecting electrode plate 70 is not limited to those shown in the foregoing embodiments, for example, the second embodiment of the present invention illustrated in FIG. The carbon fiber bundle 40, the high voltage electrode plate 60 and the collecting electrode plate 70 are all only one. The carbon fiber bundle 40 is disposed at the geometric center of the discharge chamber 10, and the high voltage electrode plate and the collecting electrode plate 70 are respectively located at both sides of the dust collecting chamber 20. This design also enables the particles to be charged and collected by the grid 50 and the collector electrode plate 70. [16] The present invention further tests the ozone generation amount for the second embodiment. During the test, the carbon fiber bundle 40 and the high voltage electrode plate 60 are electrically connected to a high voltage power supply of +7 kV, and the grid 50 and the collecting electrode plate 70 are grounded. The distance between the tip of the carbon fiber bundle 40 and the grid 50 is 4 cm, the length of the dust collecting chamber 20 is 18 cm, the width is 5 cm, the distance between the high voltage electrode plate 60 and the collecting electrode plate 70 is 2 cm, and the gas flow rate is 15 L. /min. [17] The test results show that the treated gas contains only 21.3±4.2 ppb of ozone. If the background ozone concentration is 12.1±0.9 ppb, the net ozone production of the air cleaner is only 9.2 ppb. Reduce the production of ozone. [18] In addition, referring to Figures 5 and 6, the second embodiment of the present invention additionally performs the collection efficiency test of sodium chloride particles (Fig. 5) and indoor air particles (Fig. 6), and the gas flow rate is 15 L/min, the test results show that the air purifier in the particle size range of 20-1000 nm, the collection efficiency of sodium chloride particles is between 99.4% and 100%, the collection efficiency of indoor air particles is between Between 94.2% and 100%, it is shown that the air cleaner of the present invention has good collection efficiency for different particles. [19] Based on the above description, the present invention is characterized in that the particles can be charged with a small voltage at the time of use, thereby reducing the generation of ozone and collecting the particles in two stages using a grid and a collecting electrode plate. It can achieve good particle collection efficiency, which combines low ozone and high collection efficiency. [20] The present invention is exemplified by the above-mentioned embodiments, but it is not limited thereto, and other structural replacements or retouchings that do not depart from the spirit of the present invention are still within the scope of the present invention.

【twenty one】
10‧‧‧Charging chamber
11‧‧‧First air inlet
12‧‧‧First air outlet
20‧‧‧ dust chamber
21‧‧‧Second air inlet
22‧‧‧Second air outlet
30‧‧‧Fluid equipment
31‧‧‧Fan
40‧‧‧carbon fiber bundle
50‧‧‧ grid
51‧‧‧Hands
60‧‧‧High voltage electrode plate
70‧‧‧Collecting electrode plates
80‧‧‧shell
81‧‧‧ grid opening
82‧‧‧electrode opening
90‧‧‧Hands
100‧‧‧Perforated plate

1 is a perspective view of a first embodiment of the present invention; FIG. 2 is a perspective view of a first embodiment of the present invention, in which a grid and a collecting electrode plate are extracted; and FIG. 3 is a first embodiment of the present invention. Figure 4 is a cross-sectional view of a second embodiment of the present invention; Figure 5 is a collection efficiency test chart for collecting sodium chloride particles by using the second embodiment of the present invention; Figure 6 is a second embodiment of the present invention. Collect the collection efficiency test chart of the particles contained in the air.

10‧‧‧Charging chamber

11‧‧‧First air inlet

12‧‧‧First air outlet

20‧‧‧ dust chamber

21‧‧‧Second air inlet

22‧‧‧Second air outlet

30‧‧‧Fluid equipment

31‧‧‧Fan

40‧‧‧carbon fiber bundle

50‧‧‧ grid

60‧‧‧High voltage electrode plate

70‧‧‧Collecting electrode plates

80‧‧‧shell

100‧‧‧Perforated plate

Claims (10)

A low-oxygen electrostatic dust removal air purifying machine comprises: a charging chamber having a first air inlet and a first air outlet; a dust collecting chamber having a second air inlet and a second air outlet, the first a second air inlet is connected to the first air outlet; a fluid device for guiding a gas flow sequentially through the charging chamber and the dust collecting chamber; at least one carbon fiber bundle disposed in the charging chamber, the carbon fiber bundle The utility model is characterized in that: a grid is arranged to be arranged between the charging chamber and the dust collecting chamber; at least one high voltage electrode plate is arranged in the dust collecting chamber; and at least one collecting electrode plate is arranged at the a dust collecting chamber, the collecting electrode plate being parallel to the high voltage electrode plate and forming a flow path for airflow therebetween. The low-oxygen electrostatic dust removal air cleaner according to claim 1, wherein the low-oxygen electrostatic dust removal air cleaner comprises a plurality of the high-voltage electrode plates and a plurality of the collector electrode plates, the high-voltage electrode plates and the collector electrode plates. Arranged in staggered intervals. The low-oxygen electrostatic precipitator air purifier according to claim 1, further comprising a casing surrounding the charging chamber and the dust collecting chamber. The low-oxygen electrostatic precipitator air purifier according to claim 3, wherein the housing has a grid opening, and the grid is movably disposed between the charging chamber and the dust collecting chamber via the grid opening. A low-oxygen electrostatic precipitator air purifier according to claim 4, wherein a portion of the grid exposed to the casing is provided with a handle. The low-oxygen electrostatic precipitator air purifier according to claim 3, wherein the housing has at least one electrode opening corresponding to the collecting electrode plate, and the collecting electrode plate is movably inserted into the dust collecting chamber via the electrode opening . The low-oxygen electrostatic precipitator air purifier according to claim 6, wherein the low-oxygen electrostatic precipitator air purifier comprises a plurality of the collecting electrode plates and a handle, the handles being exposed to the casing and connecting the collecting electrode plates. The low-oxygen electrostatic precipitator air purifier according to claim 1, wherein the grid is made of a conductive material and grounded. A low-oxygen electrostatic precipitator air cleaner according to claim 1, wherein the collecting electrode plate is grounded. The low-oxygen electrostatic dust removal air cleaner according to claim 1, further comprising a porous plate disposed at the first air inlet of the charging chamber.