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:
May. 18, 2010
Filed:
Jan. 31, 2007
Toshiyuki Ebara, Ota, JP;
Toshiyuki Ebara, Ota, JP;
Sanyo Electric Co., Ltd., Tokyo, JP;
Abstract
An object is to improve performance and efficiency of an air conditioning device constituted of a waste heat utilization circuit in which waste heat of a heat source is utilized in heating a room to be conditioned in a heat exchanger for heating; a refrigerant circuit in which carbon dioxide is used as a refrigerant and which has a supercritical pressure on a high pressure side; and a cascade heat exchanger which performs heat exchange between a fluid flowing from the heat source to the heat exchanger for heating in the waste heat utilization circuit and the refrigerant of the refrigerant circuit, the refrigerant discharged from a compressor is passed through the cascade heat exchanger, the refrigerant discharged from the cascade heat exchanger is divided by a flow divider, one divided refrigerant is passed from an auxiliary pressure reduction unit to an internal heat exchanger to perform heat exchange between the refrigerant and the refrigerant discharged from the cascade heat exchanger and then sucked into an intermediate pressure section of the compressor, and the other divided refrigerant is passed from a main pressure reduction unit to a heat absorber and then sucked into a low pressure section of the compressor.