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:
Oct. 14, 2008
Filed:
Nov. 06, 2006
Hiromi Ohta, Okazaki, JP;
Nobuharu Kakehashi, Toyoake, JP;
Hiromi Ohta, Okazaki, JP;
Nobuharu Kakehashi, Toyoake, JP;
Denso Corporation, Kariya, JP;
Abstract
A pressure control valve of a supercritical refrigeration cycle small in size and resistant to the effects of the outside air temperature, that is, a pressure control valve of a vapor compression type supercritical refrigeration cycle wherein a refrigerant is sealed in a sealed space at the top of the diaphragm, pressure of the refrigerant in the refrigeration cycle acts on the valve connected to the diaphragm, the valve opens and closes in accordance with the balance between the refrigerant pressure in the sealed space and the refrigerant in the refrigeration cycle, the sealed space is communicated with locations substantially having temperature sensing functions detecting the refrigerant temperature, and the volume of the locations substantially having the temperature sensing functions is at least 50% of the total volume of communicated with the sealed space.