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:
Mar. 06, 2018
Filed:
Feb. 27, 2013
Applicant:
Wahei Shingu, Chiyoda, JP;
Inventor:
Wahei Shingu, Chiyoda, JP;
Assignee:
MITSUBISHI ELECTRIC CORPORATION, Chiyoda-Ku, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F25B 49/02 (2006.01); F25B 13/00 (2006.01); F16K 11/065 (2006.01); B60H 1/00 (2006.01);
U.S. Cl.
CPC ...
F25B 49/022 (2013.01); B60H 1/00485 (2013.01); B60H 1/00907 (2013.01); F16K 11/0655 (2013.01); F25B 13/00 (2013.01); B60H 2001/00935 (2013.01); F25B 2313/0292 (2013.01); F25B 2500/27 (2013.01);
Abstract
In a vehicular air conditioner in which a cooling operation and a heating operation are switched by switching a four-way valve, a pressure accumulator is provided in which a coolant, which is related to an aspiration pressure of a compressor, is accumulated when the compressor is operated, and a differential pressure, which is required for switching the four-way valve, between piston rooms is maintained, and the differential pressure, which is required for switching the four-way valve, is generated between the piston rooms of the four-way valve even after the compressor is stopped.