# US 2023/0056960 A1 · Plasma heating device

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- Number: US 2023/0056960 A1
- Document ID: US20230056960A1
- Status: Published application
- Kind: A1
- Application number: 17/718,654
- Filed: 2022-04-12
- Published: 2023-02-23
- Earliest claimed: 2021-08-19
- Assignees: Kabushiki Kaisha Senryou
- Applicants: Kabushiki Kaisha Senryou
- Inventors: Makoto YASUKAGAWA
- Web page: https://patentgrep.com/patent/US20230056960A1

## CPC

- H05H 1/24: Generating plasma {(nuclear fusion reactors G21B1/00; gas-filled discharge reactors H01J37/32)}
- Y02E 30/10: Nuclear fusion reactors
- H05H: PLASMA TECHNIQUE (apparatus or processes specially adapted for producing X-rays H05G2/00); PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A plasma heating device efficiently generates a high temperature. A tubular conductor has a cylindrical inner surface covered with a negatively charged insulating film. A tubular anode is supported inside the conductor with insulating material. An incident pipe, with an inner surface covered with insulating film, is negatively charged and extends tangentially on the conductor and has an incident port at one end and the other end communicating with the inside of the conductor. Hydrogen gas is supplied inside the conductor through a pipe and anode. A vacuum chamber connects to a pump, the inside thereof communicates with the incident pipe. An electron gun produces an electron beam from the incident port through inside the vacuum chamber into the conductor wherein the electron beam is reflected by the negatively charged conductor and the gas in the conductor plasmalizes. A cooler surrounds the conductor and has a water flow path therein.

## Claims

### Claim 1

A plasma heating device comprising:
a tubular conductor having a cylindrical inner surface, which can be negatively charged and whose inner surface is covered with an insulating film;
a tubular anode arranged on a central axis of the tubular conductor so as to be supported by an insulating material;
an incident pipe having a straight tubular shape, which can be negatively charged and whose inner surface is covered with an insulating film, the incident pipe extending in a tangential direction of the inner surface of the tubular conductor, having an incident port at one end thereof and the other end coupled to the tubular conductor so as to communicate with the inside of the tubular conductor;
a tank for supplying hydrogen gas, heavy hydrogen gas or helium gas;
a supply pipe connected to the anode and the tank to supply the hydrogen gas, the heavy hydrogen gas or the helium gas from the tank to the inside of the tubular conductor through the anode;
a vacuum chamber connected to a vacuum pump so that the inside thereof communicates with the one end of the incident pipe;
an electron gun that causes an electron beam to be incident from the incident port through the inside of the vacuum chamber to the inside of the tubular conductor so that the electron beam is reflected by the negatively charged tubular conductor and plasmalizes the gas supplied from the tank into the tubular conductor; and
a cooler that surrounds the tubular conductor and has a water flow path therein.

### Claim 2 (depends on 1)

The plasma heating device according to claim 1, wherein
the incident pipe is provided with an incident pipe anode around the incident port, and the supply pipe is positively charged.

### Claim 3 (depends on 1)

The plasma heating device according to claim 1, further comprising:
an X-ray spectrometer for observing X-rays emitted from the vacuum chamber; and
a gas flow rate controller for adjusting the flow rate of the gas supplied from the tank to the supply pipe.

### Claim 4 (depends on 2)

The plasma heating device according to claim 2, further comprising:
an X-ray spectrometer for observing X-rays emitted from the vacuum chamber; and
a gas flow rate controller for adjusting the flow rate of the gas supplied from the tank to the supply pipe.