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:
Jun. 11, 2019
Filed:
Mar. 02, 2016
Denso Corporation, Kariya, Aichi-pref., JP;
Yoshiyuki Yokoyama, Kariya, JP;
Haruyuki Nishijima, Kariya, JP;
Etsuhisa Yamada, Kariya, JP;
Ryota Nakashima, Kariya, JP;
Yoshiaki Takano, Kariya, JP;
Kazunori Mizutori, Kariya, JP;
Yorito Kohara, Kariya, JP;
Hiroshi Shintani, Kariya, JP;
DENSO CORPORATION, Kariya, Aichi-pref., JP;
Abstract
An ejector has a nozzle, a body, a passage defining member and a drive portion. The body has a refrigerant suction port and a pressure increasing portion. A nozzle passage is defined between an inner surface of the nozzle and an outer surface of the passage defining member and has a minimum sectional area portion, a tapered portion, and an expansion portion. The minimum sectional area portion has a smallest passage sectional area. The tapered portion is located upstream of the minimum sectional area portion in a refrigerant flow direction and has a passage sectional area decreasing toward the minimum sectional area portion gradually. The expansion portion is located downstream of the minimum sectional area portion in the refrigerant flow direction and has a passage sectional area increasing gradually. The passage defining member has a groove that is recessed to increase the passage sectional area of the nozzle passage.