# US 8,464,695 B2 · Ignition apparatus, internal-combustion engine, ignition plug, plasma equipment, exhaust gas degradation apparatus, ozone generating/sterilizing/disinfecting apparatus and odor eliminating apparatus

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- Number: US 8,464,695 B2
- Document ID: US8464695B2
- Status: Granted
- Kind: B2
- Application number: 13/553,982
- Filed: 2012-07-20
- Published: 2012-11-22
- Granted: 2013-06-18
- Earliest claimed: 2006-09-20
- Assignees: Imagineering, Inc.
- Applicants: Yuji Ikeda
- Inventors: Yuji Ikeda
- Web page: https://patentgrep.com/patent/US8464695B2

## CPC

- F02P 23/045: {using electromagnetic microwaves}
- A61L 2/202: Ozone
- B01D 53/32: by electrical effects other than those provided for in group B01D61/00
- C01B 13/10: Preparation of ozone
- F02B 23/08: with positive ignition
- F02M 25/03: into the cylinder {or the pre-combustion chamber}
- F02M 27/04: by electric means, {ionisation, polarisation} or magnetism
- F02P 9/007: {by supplementary electrical discharge in the pre-ionised electrode interspace of the sparking plug, e.g. plasma jet ignition}
- H05B 6/681: {Circuits comprising an inverter, a boost transformer and a magnetron}
- H05B 6/806: {for laboratory use}
- B01D 2259/818: Employing electrical discharges or the generation of a plasma
- F02B 47/02: the substances being water or steam
- F02B 47/08: the substances including exhaust gas
- F02P 3/0407: {Opening or closing the primary coil circuit with electronic switching means (F02P3/045 - F02P3/055 take precedence)}
- F02P 5/00: Advancing or retarding ignition; Control therefor
- F02P 15/02: Arrangements having two or more sparking plugs
- F02P 15/10: having continuous electric sparks
- H05B 2206/045: Microwave disinfection, sterilization, destruction of waste...
- Y02B 40/00: Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
- Y02T 10/12: Improving ICE efficiencies
- F02P: IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES ({anti-pollution means for internal-combustion engines F02B17/00}; specially adapted for rotary-piston or oscillating-piston engines F02B53/12; {ignition of gas turbine plants F02C7/26; ignition of jet propulsion plants F02K9/95; starting of combustion engines F02N9/00}; ignition of combustion apparatus in general, glowing plugs F23Q; measuring of physical variables in general G01; controlling in general G05; data processing in general G06; electrical components in general see Section H; {ignition coils H01F38/12}; sparking plugs H01T13/00)
- A61L: METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES (preservation of bodies or disinfecting characterised by the agents employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toiletry purposes A61K)
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)
- C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C}
- F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G)
- F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A plasma equipment comprising a microwave oscillator for generating a predetermined microwave band, a microwave resonant cavity for allowing the predetermined microwave band to resonate, and microwave radiation means for radiating the microwave into the microwave resonant cavity, wherein the microwave radiation means is a microwave radiation antenna having the shape and the size so as to form a strong electric field of the microwave in a plasma generation field formed by the microwave.

## Claims

### Claim 1

A plasma equipment comprising:
a microwave oscillator for generating a predetermined microwave band;
a microwave resonant cavity for allowing the predetermined microwave band to resonate;
microwave radiation means for radiating the microwave into the microwave resonant cavity, wherein the microwave radiation means is a microwave radiation antenna having the shape and the size so as to form a strong electric field of the microwave in a plasma generation field formed by the microwave;
plasma ignition means that makes partial discharge in gas in the microwave resonant cavity and then induces plasma in the gas; and
control means for controlling the microwave radiation means and the plasma ignition means and a measurement unit for measuring the generation amount or emission intensity of OH radicals and O.sub.3 generated by plasma generation, wherein the microwave radiation means and/or the plasma ignition means process a result of the measurement unit in real time so as to provide the resultant to the control means.

### Claim 2 (depends on 1)

The plasma equipment according to claim 1, further comprising microwave transmission means.

### Claim 3 (depends on 2)

The plasma equipment according to claim 2, wherein the microwave transmission means is a coaxial cable.

### Claim 4 (depends on 2)

The plasma equipment according to claim 2, wherein the microwave transmission means is a waveguide.

### Claim 5 (depends on 1)

The plasma equipment according to claim 1, wherein a magnetron for home electric appliances having an oscillation frequency of 2.45 GHz is used as the microwave oscillator.

### Claim 6 (depends on 1)

The plasma equipment according to claim 1, wherein the microwave radiation means includes an ignition/discharge unit serving as the microwave radiation means and the plasma ignition means, and the microwave radiation means and the ignition/discharge unit are provided in an integrally formed insulator.

### Claim 7 (depends on 6)

The plasma equipment according to claim 6, further comprising:
a coaxial cable for transmitting the microwave;
a directional coupler for branching, isolating, and coupling the microwave; and
a regulator for regulating impedance of entire transmission systems.

### Claim 8

A plasma equipment comprising:
a microwave oscillator for generating a predetermined microwave band;
a microwave resonant cavity for allowing the predetermined microwave band to resonate;
microwave radiation means for radiating the microwave into the microwave resonant cavity, wherein the microwave radiation means is a microwave radiation antenna having the shape and the size so as to form a strong electric field of the microwave in a plasma generation field formed by the microwave; and
plasma ignition means that makes partial discharge in gas in the microwave resonant cavity and then induces plasma in the gas; and
wherein the plasma ignition means uses barrier discharge which inserts an insulating material such as a dielectric body between electrodes, corona discharge which forms a non-uniform electric field, and pulse discharge which applies less than 1 .mu.s of short pulse voltage.