Heat transfer device and furnace using same

Patent metadata

Field	Value
Publication number	US-11248858-B2
Application number	US-201816615403-A
Country	US
Kind code	B2
Filing date	May 9, 2018
Priority date	May 25, 2017
Publication date	Feb 15, 2022
Grant date	Feb 15, 2022

Abstract

Provided is a heat transfer device comprising: a housing; a regenerator; a first heat exchanger; and a second heat exchanger.

First claim

The invention claimed is:

1. A heat transfer device comprising:
a housing that is disposed straddling a high-temperature heat source and a low-temperature heat bath having lower temperature than the high-temperature heat source, that has a closed space within which a gas is sealed, and that has a conduit formed inside, both end portions of the conduit being closed off;
a regenerator that is disposed in the conduit, and at which are formed pores that communicate both end portions of the regenerator with each other, and which is insulated from the outside of the housing;
a first heat exchanger that is provided adjacent to an end portion of the regenerator on the high-temperature heat source side in the conduit, and that allows heat of the high-temperature heat source to move toward the regenerator; and
a second heat exchanger that is provided adjacent to an end portion of the regenerator on the low-temperature heat bath side in the conduit, and that allows heat of the regenerator to move toward the low-temperature heat bath,
wherein the center of the regenerator along an extending direction of the conduit is positioned on the conduit in a position that is from 12.5% to 25% of a conduit length from the end portion of the conduit on the high-temperature heat source side.

2. The heat transfer device according to claim 1 , wherein:
the conduit includes:
an inner tube, a part of which communicates the high-temperature heat source side with the low-temperature heat bath side in the housing and
an outer tube that is formed on the outer side of the inner tube, and that communicates with the inner tube on the low-temperature heat bath side, an end portion on the high-temperature heat source side of the outer tube being closed off; and

the first heat exchanger, the second heat exchanger, and the regenerator are disposed in the outer tube.

3. The heat transfer device according to claim 1 , wherein the heat transfer device has a regulating unit that is disposed in the end portion of the housing on the low-temperature heat bath side so as to be movable forward and backward inside the housing and that transforms the waveform of a standing wave generated in the conduit by a thermoacoustic self-excited wave, by moving forward inside the housing.

4. A furnace comprising:
a furnace wall comprising insulation;
a heater that is disposed inside of the furnace circumscribed by the furnace wall, and that heats the inside of the furnace; and
the heat transfer device according to claim 1 , at which the regenerator is disposed at the furnace wall, the first heat exchanger is disposed inside the furnace, and the second heat exchanger is disposed outside the furnace, at least when cooling the furnace.

5. The furnace according to claim 4 , further comprising a reflector that reflects radiation inside the furnace so as to be incident on the heat transfer device disposed inside the furnace.

6. The furnace according to claim 5 , further comprising a shaft body that supports the reflector within the furnace, and that extends from the inside of the furnace to the outside of the furnace.

7. The furnace according to claim 6 , wherein the reflector is configured to be rotatable integrally with the shaft body about the axial direction of the shaft body.

8. The furnace according to claim 6 , wherein a hole portion that extends in the axial direction of the shaft body is formed at the shaft body, the heat transfer device is disposed inside the hole portion, and, at least when cooling the furnace, the end portion of the heat transfer device, on the side at which the first heat exchanger is disposed, is exposed from the inside of the hole portion to a reflective surface side of the reflector.

9. The furnace according to claim 8 , wherein part of the end portion of the heat transfer device, on the side at which the first heat exchanger is disposed, is positioned in a focus of the reflective surface of the reflector at least when cooling the furnace.

10. The furnace according to claim 8 , wherein the reflector is configured to be movable forward and backward with respect to the furnace wall along the axial direction integrally with the shaft body.

11. The furnace according to claim 4 , wherein the heat transfer device is configured to be movable forward and backward with respect to the furnace wall along the axial direction of the heat transfer device.

12. The furnace according to claim 4 , wherein the plate thickness of the housing, from the position at which the radiation inside the furnace is incident to the position at which the first heat exchanger is disposed, is locally thicker than the plate thickness of the other portion of the housing.

13. The furnace according to claim 4 , wherein the portion of the housing on the outer peripheral side of the first heat exchanger is formed by a radiation-transmitting member.

Assignees

• National Univ Corporation Tokyo Univ Of Agriculture And Technology
• Shoden Kogyo Co Ltd

Inventors

• Ueda Yuki
• Yoshioka Kazuyuki

Classifications

• F28D15/0266

  with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers (F28D15/043 takes precedence) · CPC title

• F28D15/00

  Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls {; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies (F28D17/00, F28D19/00, F28D20/00 take precedence)} · CPC title

• F28D7/106

  consisting of two coaxial conduits or modules of two coaxial conduits · CPC title

• F28D15/06 Primary

  Control arrangements therefor · CPC title

• F28D15/0275

  Arrangements for coupling heat-pipes together or with other structures, e.g. with base blocks; Heat pipe cores · CPC title