Cylindrical IFD filter

Patent metadata

Field	Value
Publication number	US-10843206-B2
Application number	US-201715571503-A
Country	US
Kind code	B2
Filing date	Apr 26, 2017
Priority date	Aug 11, 2016
Publication date	Nov 24, 2020
Grant date	Nov 24, 2020

Abstract

The present invention discloses a cylindrical IFD filter, comprising a dust collecting module and a field power module interval arranged inside the channel of the dust collecting module, a plurality of field power module units are symmetrically and vertically spaced arranged on the side wall of the field power module; a plurality of layers of the dust collecting module channels which are stacked vertically are pass-through arranged on the dust collecting module, and each barrier wall between the vertical adjacent dust collecting module channels is alternately disposed as a pair of positive plate and negative plate, each barrier wall between the vertical adjacent dust collecting module channels comprises polar plate electrode and a polar plate coating coated on the upper and bottom walls of the polar plate electrode; and each barrier wall between the lateral adjacent dust collecting module channels adopts same coating material as the polar plate coating. The present invention has the advantages of having larger particulate contaminant charge and higher filtering efficiency.

First claim

What is claimed is:

1. A cylindrical intense field dielectric (IFD) filter, comprising
(1) a dust collecting module with a first cathode and a first anode, which comprises a middle channel, a side wall with an inner surface, a length and a ring-shaped across-section; and
(2) a field power module with a second cathode and a second anode, which is of a cylindrical shape, has a side wall a length same as that of the dust collecting module, and is concentrically disposed inside the middle channel of the dust collection module so that the side wall is facing but not in contact with the inner surface of the dust collecting module; wherein
an electric field module comprises a plurality of sub-units each of which comprises a conductive ring, a plurality of discharge cavities formed in the side wall of the electric field module, and a plurality of discharge electrodes welded on the conductive ring and inserted into the discharge cavities, the conductive rings of the sub-units are connected via a metal rod to form the second cathode while a metal rod or wire is connected to the side wall of the field power module form the second anode; and
the side wall of the dust collecting module comprises a grid of channels in a plurality of rows and a plurality of columns, each of the channels has a front side being an air inlet and a back side being an air outlet, and the rows of channels are separated from each other by a plurality of ring-shaped plates which are alternatively positive plates and negative plates, with all the positive plates being interconnected by a wire to from the first anode and all the negative plates interconnected by a wire to from the first cathode.

2. The cylindrical IFD filter according to claim 1 , wherein the discharge electrodes are of a shape of pointed rod or spiked rod.

3. The cylindrical IFD filter according to claim 1 , wherein the discharge cavities are of a round, square or rounded square shape.

4. The cylindrical IFD filter according to claim 3 , wherein the conductive ring is sleeved on the field power module.

5. The cylindrical IFD filter according to claim 3 , wherein the conductive ring is arranged inside the field power module.

6. The cylindrical IFD filter according to claim 3 , wherein the ring-shaped positive plates and negative plates are polar plate electrodes made of a material selected from the group consisting of copper, steel, and aluminum.

7. The cylindrical IFD filter according to claim 6 , wherein the polar plate electrodes is coated with a material selected from the group consisting of PVC, PTFE, and ceramic.

Assignees

• Univ Tianjin

Inventors

• Liu Junjie
• Zhang Zhiwei
• Chen Wenhua

Classifications

• B03C2201/10

  Ionising electrode with two or more serrated ends or sides · CPC title

• B03C2201/04

  Ionising electrode being a wire · CPC title

• B03C2201/06

  Ionising electrode being a needle · CPC title

• B03C3/49

  tubular · CPC title

• B03C3/06 Primary

  characterised by presence of stationary tube electrodes · CPC title