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:
Jun. 21, 2005
Filed:
Jun. 22, 2004
Yoshiki Katoh, Chita-gun, JP;
Masaaki Kawakubo, Obu, JP;
Ken Muto, Toyota, JP;
Etsuo Hasegawa, Nagoya, JP;
Yoshiki Katoh, Chita-gun, JP;
Masaaki Kawakubo, Obu, JP;
Ken Muto, Toyota, JP;
Etsuo Hasegawa, Nagoya, JP;
DENSO Corporation, Kariya, JP;
Abstract
A heat exchanger is used in a vapor-compression type refrigerator where a pressure of a refrigerant at a high-pressure portion reaches and exceeds a critical pressure. A low-pressure refrigerant flows through the heat exchanger. The heat exchanger comprises a flat tube; refrigerant channels included in the tube; and inner pillars disposed between the refrigerant channels. A tensile strength of material of the tube is defined as S [N/mm]; of one of the refrigerant channels, a dimension approximately parallel with a major-axis direction of the tube, as Wp [mm]; and, of one of the pillars, a thickness approximately parallel with the major-axis direction of the tube, as Ti [mm]. Here, [447×Wp/{10^(1.54×logS)}−533/{10^(1.98×logS)}]≦Ti≦[447×Wp/{10^(1.54×logS)}−533/{10^(1.98×logS)}]×2.3.