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Patent Searching and Data


Title:
AIR CONDITIONER
Document Type and Number:
Japanese Patent JP2010255966
Kind Code:
A
Abstract:

To provide an air conditioner of high energy efficiency by reducing in-pipe refrigerant pressure loss of an indoor heat exchanger and a pressure loss in piping connecting an indoor cycle and an outdoor cycle, and improving indoor heat exchanging performance in a cooling operation, in an air conditioner using a HFO-1234yf refrigerant and having a dehumidifying valve on the way of the piping of the indoor heat exchanger.

In this air conditioner performing cooling, heating and dehumidifying operations by circulating a HFO-1234yf single refrigerant, or a mixed refrigerant prepared by mixing HFO-1234yf and another refrigerant as a working fluid, a gas-liquid separator is disposed at a downstream side of a first indoor heat exchanger and an upstream side of the dehumidifying valve, and a gas refrigerant after gas-liquid separation by the gas-liquid separator is allowed to flow to a suction side of a compressor through a flow rate adjustment valve in a cooling operation. Thus pressure loss of the refrigerant flowing into the indoor heat exchanger and the connection piping is reduced, and cooling performance is improved.


Inventors:
TAKAKU SHOJI
ENDO KAZUHIRO
Application Number:
JP2009108651A
Publication Date:
November 11, 2010
Filing Date:
April 28, 2009
Export Citation:
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Assignee:
HITACHI APPLIANCES INC
International Classes:
F25B43/00; F25B1/00; F25B29/00; F25B39/02
Attorney, Agent or Firm:
Manabu Inoue
Yuji Toda