04653288 is referenced by 27 patents and cites 6 patents.

A refrigerant flow rate measuring apparatus has a means for detecting the opening degree A of an expansion valve of a refrigeration cycle, a pressure detecting means for detecting the refrigerant pressure Pi at upstream side of the expansion valve, a pressure detecting means for detecting the refrigerant pressure Po at downstream side of the expansion valve, a refrigerant density detecting means for detecting the density .gamma.i of the refrigerant at the inlet side of the expansion valve, a converting means for directly or indirectly converting the values detected by the detecting means into electric signals, and a calculating means for calculating the flow rate of the refrigerant in accordance with the following formula, from the electric signals. ##EQU1##

Title
Apparatus for measuring refrigerant flow rate in refrigeration cycle
Application Number
6/751135
Publication Number
4653288
Application Date
July 2, 1985
Publication Date
March 31, 1987
Inventor
Toshihiko Fukushima
Ibaraki
JP
Kenji Emi
Katsuta
JP
Seigo Miyamoto
Katsuta
JP
Seijiro Tani
Ibaraki
JP
Kosaku Sayo
Katsuta
JP
Agent
Antonelli Terry & Wands
Assignee
Hitachi
JP
IPC
G01F 1/36
F25B 41/00
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