IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0486355
(2002-08-29)
|
우선권정보 |
JP-2001-262282(2001-08-30) |
국제출원번호 |
PCT/JP02/008733
(2002-08-29)
|
§371/§102 date |
20041004
(20041004)
|
국제공개번호 |
WO03/019087
(2003-03-06)
|
발명자
/ 주소 |
- Mita,Hideo
- Gotou,Tetuya
- Igarasi,Motohiro
- Furusawa,Takayuki
|
출원인 / 주소 |
- Aisin Seiki Kabushiki Kaisha
- Central Japan Railway Company
|
대리인 / 주소 |
Oblon, Spivak, McClelland, Maier &
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인용정보 |
피인용 횟수 :
1 인용 특허 :
4 |
초록
▼
A pulse tube refrigerating machine, comprising a pulse tube (11) connected to a regenerator (9) and having a hot end part (11a) being heated, in which a cooling device ( 30), for cooling the hot side tube wall (11cd) of the pulse tube by cooling medium lower in temperature than the hot side tube wal
A pulse tube refrigerating machine, comprising a pulse tube (11) connected to a regenerator (9) and having a hot end part (11a) being heated, in which a cooling device ( 30), for cooling the hot side tube wall (11cd) of the pulse tube by cooling medium lower in temperature than the hot side tube wall of the pulse tube, cools the hot side tube wall (11cd) of the pulse tube by coolant flowing from the pressure source (1) of the pulse tube refrigerating machine into the regenerator (9).
대표청구항
▼
What is claimed is: 1. A pulse tube refrigerator comprising a pulse tube having a wall, wherein said pulse tube further includes a hot end that generates heat; a cold reservoir, wherein said pulse tube is connected to said cold reservoir; a vacuum tank, wherein said pulse tube is at least partially
What is claimed is: 1. A pulse tube refrigerator comprising a pulse tube having a wall, wherein said pulse tube further includes a hot end that generates heat; a cold reservoir, wherein said pulse tube is connected to said cold reservoir; a vacuum tank, wherein said pulse tube is at least partially disposed inside of said vacuum tank; and a cooling device which cools a high-temperature-side portion of said wall of said pulse tube by use of a refrigerant which is lower in temperature than said high-temperature-side portion of said wall of said pulse tubes, wherein said cooling device extends along at least part of said high-temperature-side portion of said wall which is disposed inside of said vacuum tank, such that said cooling device cools said high-temperature-side portion of said wall inside of said vacuum tank. 2. A pulse tube refrigerator according to claim 1, wherein: said refrigerant which is used by said cooling device is a refrigerant which passes through said pulse tube. 3. A pulse tube refrigerator according to claim 2, wherein: said refrigerant flows out of a pressure source and flows into said cold reservoir. 4. A pulse tube refrigerator according to claim 2, wherein: said refrigerant flows between a discharge port of a pressure source and a high-pressure inlet port of a changeover valve communicating with said discharge port of said pressure source. 5. A pulse tube refrigerator according to claim 2, wherein: said refrigerant flows out of said cold reservoir and flows into a pressure source. 6. A pulse tube refrigerator according to claim 2, wherein: said refrigerant flows between a low-pressure outlet port of a changeover valve and a suction port of a pressure source. 7. A pulse tube refrigerator according to claim 2, wherein: said cooling device cools a heat radiating unit disposed at said hot end of said pulse tube, by use of said refrigerant, and wherein said refrigerant flows between a discharge side of a pressure source and a high-pressure inlet port of a changeover valve communicating with said discharge side of said pressure source. 8. A pulse tube refrigerator according to claim 2, wherein: said cooling device cools a heat radiating unit disposed at said hot end of said pulse tube, by use of said refrigerant, and wherein said refrigerant flows between a suction port of a pressure source and a low-pressure outlet port of a changeover valve communicating with said suction port of said pressure source. 9. A pulse tube refrigerator according to claim 2, wherein: a radiator is provided between a suction port of a pressure source and a low-pressure outlet port of a changeover valve communicating with said suction port of said pressure source; said cooling device cools said high-temperature-side portion of said wall of said pulse tube by use of said refrigerant which flows out of said low-pressure outlet port of said changeover valve; and said refrigerant used to cool said high-temperature-side portion of said wall of said pulse tube is cooled by use of said radiator. 10. A pulse tube refrigerator according to claim 2, wherein: a radiator is provided between a suction port of a pressure source and a low-pressure outlet port of a changeover valve communicating with said suction port of said pressure source; said cooling device cools a heat radiating unit disposed at said hot end of said pulse tube by use of said refrigerant which flows out of said low-pressure outlet port of said changeover valve; and said refrigerant used to cool said heat radiating unit is cooled by use of the radiator. 11. A pulse tube refrigerator according to claim 1, wherein: a first pressure source is provided for providing a flow between said pulse tube and said cold reservoir; said refrigerant of said cooling device flows along a flow path to and from the cooling device; a second pressure source is provided along said flow path; and said flow path is isolated from said cold reservoir such that said refrigerant flowing through said flow path does not enter said cold reservoir, and wherein said refrigerant flows continuously through said flow path. 12. A pulse tube refrigerator according to claim 1, wherein: said pulse tube further includes a low-temperature-side portion of said wall which is disposed within said vacuum tank; and said cooling device extends along said high-temperature-side portion of said wall from a point on said wall of said pulse tube at which a temperature of said wall is higher than a temperature of an ambient atmospheric temperature to a point at said hot end of said pulse tube, so that heat conduction along said wall of said pulse tube from said high-temperature-side portion toward said low-temperature-side portion is reduced. 13. A pulse tube refrigerator according to claim 1, further comprising: a pressure source; a changeover valve disposed between the pressure source and the cold reservoir; a main circuit extending from a discharge port of the pressure source to a high-pressure inlet port of the changeover valve; and a branch circuit which branches off from the main circuit; wherein said cooling device is provided at the branch circuit. 14. A pulse tube refrigerator according to claim 13, wherein: both one end and the other end of the branch circuit are connected with the main circuit. 15. A pulse tube refrigerator according to claim 14, wherein: a flow-rate adjustment valve is provided between the pressure source and the high-pressure inlet port of the changeover valve; and one end of the branch circuit is connected with the main circuit between the pressure source and the flow-rate adjustment valve and the other end of the branch circuit is connected with the main circuit between the flow-rate adjustment valve and high-pressure inlet port of the changeover valve. 16. A pulse tube refrigerator according to claim 13, wherein: one end of the branch circuit is connected with the main circuit, and the other end of the branch circuit is connected with a suction port of the pressure source. 17. A pulse tube refrigerator comprising: a pulse tube having a wall, wherein said pulse tube further includes a hot end that generates heat; a cold reservoir, wherein said pulse tube is connected to said cold reservoir; a vacuum tank; and a cooling device which cools a high-temperature-side portion of said wall of said pulse tube by use of a cooling medium which is lower in temperature than said high-temperature-side portion of said wall of said pulse tube, wherein: said cooling device includes at least part of said high-temperature-side portion of said wall of said pulse tube which is disposed outside of said vacuum tank and in the atmosphere, and wherein said at least part of said high-temperature-side portion is formed of a material having good heat conduction; wherein said pulse tube further includes a low-temperature-side portion of said wall which is disposed within said vacuum tank, and which is formed of a material having poor heat conduction; and wherein said high-temperature-side portion and said low-temperature-side portion are joined together.
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