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:
Jul. 26, 1994
Filed:
Apr. 20, 1993
Takayoshi Matsuoka, Yokosuka, JP;
Nissan Motor Co, Ltd., Yokohama, JP;
Abstract
A heat pump type air conditioner for an automotive vehicle has a compressor to which an outer heat exchanger and a heat-radiating inner heat exchanger are connected through a three-way valve. The heat-radiating inner heat exchanger is connected to a heat-absorbing inner heat exchanger through an expansion valve. The heat-absorbing inner heat exchanger is connected to the compressor. During a cooling operation the three-way valve is set to lead the refrigerant from the compressor to the outer heat exchanger. During a heating operation the three-way valve is set to lead the refrigerant from the compressor to the heat-radiating inner heat exchanger while bypassing the outer heat exchanger. The three-way valve is switched by a switching means when a target conditioned-air temperature, which is determined according to thermal information of the automotive vehicle, generally corresponds to a temperature at which clouding of windows is not caused by the relationship between a compartment temperature and an ambient temperature. Accordingly, the cooling and heating operations are stably implemented without being effected by various conditions, and the clouding of the windows is securely prevented while electric power consumption is deceased.