The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 28, 2018
Filed:
Aug. 31, 2015
Sumitomo Heavy Industries, Ltd., Tokyo, JP;
Akihiro Tsuchiya, Nishitokyo, JP;
Mingyao Xu, Nishitokyo, JP;
SUMITOMO HEAVY INDUSTRIES, LTD., Tokyo, JP;
Abstract
In a pulse tube refrigerator, a gas flow passage is connected to a high-temperature end of a low-temperature side pulse tube and a compressor, such that a working gas flows in the gas flow passage. The gas flow passage includes: a first flow passage connected to the high-temperature end of the low-temperature side pulse tube; a second flow passage connected to the compressor and having an outlet facing an outlet of the first flow passage; and a housing that gastightly accommodates the outlet of the first flow passage and the outlet of the second flow passage. The housing has a gastight space communicating with the outlet of the first flow passage and the outlet of the second flow passage, the gastight space located on a side of the low-temperature side pulse tube with respect to the outlet of the first flow passage.