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:
Dec. 27, 1994
Filed:
Jan. 24, 1994
Junichiro Hara, Yokohama, JP;
Takayoshi Matsuoka, Yokosuka, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
An air conditioner for a vehicle having a compressor, an outer heat exchanger, a heat-radiating inner heat exchanger an expansion valve, a heat-absorbing inner heat exchanger which are connected thereamong. A connecting condition of these elements is changed into one of a cooling, a heating and a weak heating, by controlling a refrigerant passage switching device. During the cooling, refrigerant in the air conditioner is circulated in the order of at least the outer heat exchanger, the expansion valve, the heat-absorbing inner heat exchanger and the compressor. During the heating the refrigerant is circulated in the order of the heat-radiating inner heat exchanger, the expansion valve, the heat-absorbing inner heat exchanger and the compressor while bypassing the outer heat exchanger. During the weak heating, the refrigerant is circulated in the order of the heat-radiating inner heat exchanger, the expansion valve, at least the outer heat exchanger and the compressor. Therefore, it becomes possible to implement a heating operation in a wide-range from an intensely cold condition to a slightly cool condition while saving an energy consumption.