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:
Jan. 10, 2017
Filed:
Feb. 17, 2012
Minoru Matsuo, Tokyo, JP;
Kenji Ueda, Tokyo, JP;
Toshihiko Niinomi, Tokyo, JP;
Hitoi Ono, Tokyo, JP;
Minoru Matsuo, Tokyo, JP;
Kenji Ueda, Tokyo, JP;
Toshihiko Niinomi, Tokyo, JP;
Hitoi Ono, Tokyo, JP;
MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo, JP;
Abstract
A flow rate of a heat transfer medium is computed without a flow meter. In a control apparatus (), a storing portion () stores an aerodynamic characteristic map indicating a line causing a rotating stall and lines showing a sonic velocity in a refrigerant sucked in by a compressor () on a map displaying a variable θ reflecting a suction volume of the compressor () and a variable Ω reflecting a head of the compressor (); a estimation portion of chilled water flow rate () computes the variable Ω, derives the variable θ according to the variable Ω from the map, computes a heat amount exchanged between the refrigerant and the chilled water in an evaporator () based on the suction volume of the compressor () according to the computed variable θ, and computes the flow rate of the chilled water based on the heat amount.