Plasma reactor

• US 10,450,916 B2
• Filed: 02/27/2017
• Issued: 10/22/2019
• Est. Priority Date: 03/01/2016
• Status: Active Grant

• Current Assignee: Niterra Co., Ltd.
• Original Assignee: NGK Spark PLUG Company Limited (Niterra Co., Ltd.)
• Inventors: Itoh, Shinsuke, Nadanami, Norihiko, Ebara, Yu
• Primary Examiner(s): Duong, Tom P
• Application Number:
  US16/079,146
• Publication Number:
  US 20190055869A1
• Time in Patent Office: 967 Days
• Field of Search: 422174, 422170, 42218604
• CPC Class Codes: B01D 2259/818 Employing electrical discharges or the generation of a plasma
• CPC Class Codes: B01D 53/32 by electrical effects other than those provided for in group B01D61/00
• CPC Class Codes: B01D 53/92 of engine exhaust gases exhaust or silencing apparatus for internal combustion engines, machines or engines in general, having means for purifying, rendering innocuous or otherwise treating exhaust gases F01N3/00
• CPC Class Codes: B01J 19/08 Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor application of shock waves B01J3/08
• CPC Class Codes: F01N 3/028 using microwaves
• CPC Class Codes: F01N 3/0892 Electric or magnetic treatment, e.g. dissociation of noxious components electric filters F01N3/01; regeneration of exhaust filters F01N3/023; heating catalytic converters F01N3/2006
• CPC Class Codes: H05H 1/2406 using dielectric barrier discharges, i.e. with a dielectric interposed between the electrodes
• CPC Class Codes: H05H 1/2418 the electrodes being embedded in the dielectric
• CPC Class Codes: H05H 1/2437 Multilayer systems
• CPC Class Codes: H05H 2245/17 Exhaust gases

Abstract

Provided is a plasma reactor capable of reliably generating plasma even in the event of inflow of water. The plasma reactor of the present invention includes a plasma panel stack 20, electrically conductive members 51 and 54, a case, and a mat 71. The plasma panel stack 20 has a structure in which electrode panels 30 are stacked, and generates plasma upon application of voltage between the adjacent electrode panels 30. The electrically conductive members 51 and 54 are electrically connected to discharge electrodes of the electrode panels 30. The case houses the plasma panel stack 20. The mat 71 intervenes between the case and the plasma panel stack 20 and fixes the plasma panel stack 20 to the case. The mat 71 is disposed apart from the electrically conductive members 51 and 54 so that gaps S1 and S2 are formed between the mat 71 and the electrically conductive members 51 and 54, respectively.

Claims

1. A plasma reactor comprising:

a plasma panel stack having a structure in which a plurality of electrode panels each having a discharge electrode are stacked, and generating plasma upon application of voltage between the adjacent electrode panels;

an electrically conductive member electrically connected to the discharge electrodes of the plurality of electrode panels, the electrically conductive member including

a main body part extending in a stacking direction of the plasma panel stack, and

plate parts respectively connected to both ends of the main body part and respectively disposed at upper and lower surfaces of the plasma panel stack;

a case housing the plasma panel stack; and

a mat intervening between the case and the plasma panel stack and fixing the plasma panel stack to the case;

the plasma reactor being characterized in that the mat is disposed apart from the electrically conductive member so that a gap having a size of 2 mm to 30 mm is present between the mat and the electrically conductive member.

2. A plasma reactor according to claim 1, wherein the mat has a cutout extending therethrough in a thickness direction thereof so as to avoid interference with the electrically conductive member, thereby providing the gap between the mat and the electrically conductive member.

3. A plasma reactor according to claim 1, wherein a plurality of the mats are disposed apart from one another, and the electrically conductive member is located between the adjacent mats.

4. A plasma reactor comprising:

a plasma panel stack having a structure in which a plurality of electrode panels each having a discharge electrode are stacked, and generating plasma upon application of voltage between the adjacent electrode panels with gas passing between the adjacent electrode panels;

an electrically conductive member electrically connected to the discharge electrodes of the plurality of electrode panels;

a case housing the plasma panel stack; and

a plurality of mats intervening between the case and the plasma panel stack and fixing the plasma panel stack to the case;

the plasma reactor being characterized in that each of the plurality of the mats are disposed apart from one another along a passing direction of the gas;

wherein each of the plurality of mats has a rectangular frame shape as viewed from a side.

5. A plasma reactor according to claim 4, wherein the mats have the same dimensions.