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:
Feb. 19, 2013
Filed:
Apr. 22, 2009
Kazuma Miyazaki, Nagoya, JP;
Yoshikatsu Sawada, Kariya, JP;
Yasutane Hijikata, Nagoya, JP;
Takeshi Wakisaka, Ichinomiya, JP;
Hiroyuki Nakaima, Kariya, JP;
Kazuma Miyazaki, Nagoya, JP;
Yoshikatsu Sawada, Kariya, JP;
Yasutane Hijikata, Nagoya, JP;
Takeshi Wakisaka, Ichinomiya, JP;
Hiroyuki Nakaima, Kariya, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Denso Corporation, Kariya, JP;
Abstract
A refrigeration cycle apparatus includes a compressor, a condenser, a pressure-reducing mechanism, an evaporator, an orifice provided in a refrigerant flow path from the compressor to the pressure-reducing mechanism, a differential pressure sensor that detects the differential pressure before and after the orifice, a refrigerant flowrate calculating portion that calculates a refrigerant flowrate based on the differential pressure, and a torque estimating portion that estimates the torque required to drive the compressor based on the refrigerant flowrate calculated by the refrigerant flowrate calculating portion, the intake pressure of the compressor, and the discharge pressure of the compressor.