Title:
REFRIGERATION DEVICE
Document Type and Number:
Japanese Patent JP2014129941
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To prevent the occurrence of liquid compression in a compressor having a variable operating frequency by accurately controlling the wetness of refrigerant attracted into the compressor.SOLUTION: A discharge temperature sensor 64 detects a discharge temperature of refrigerant discharged from a compressor 31. An outdoor heat exchanger temperature sensor 65 and an indoor heat exchanger temperature sensor 75 detect an evaporation temperature TE of the refrigerant and a condensation temperature TC of the refrigerant. A control device 50 acquires a target discharge temperature of the compressor 31 at which an attraction wetness of the compressor 31 is kept to a preset target wetness by performing a computation with at least one of the number of revolutions of the compressor 31 and a refrigerant circulation amount of a refrigeration circuit 20, the evaporation temperature TE, and the condensation temperature TC used as parameters, and controls an expansion mechanism 34 so that the discharge temperature is equal to a target discharge temperature TTd.
Inventors:
TANIMOTO KEISUKE
OKUDA NORIYUKI
SETOGUCHI TAKAYUKI
OKUDA NORIYUKI
SETOGUCHI TAKAYUKI
Application Number:
JP2012288059A
Publication Date:
July 10, 2014
Filing Date:
December 28, 2012
Export Citation:
Assignee:
DAIKIN IND LTD
International Classes:
F25B1/00
Domestic Patent References:
| JPS5912942B2 | 1984-03-27 | |||
| JP2002089976A | 2002-03-27 | |||
| JP2001194015A | 2001-07-17 | |||
| JP2012097910A | 2012-05-24 | |||
| JP2012137281A | 2012-07-19 | |||
| JP2008304134A | 2008-12-18 | |||
| JP2010261623A | 2010-11-18 | |||
| JP2011174672A | 2011-09-08 |
Attorney, Agent or Firm:
Shinki Global IP Patent Corporation