Title:
REFRIGERATION AIR CONDITIONING APPARATUS
Document Type and Number:
Japanese Patent JP2009139012
Kind Code:
A
Abstract:
To provide a refrigeration air conditioning apparatus, using a refrigerant such as CO2 whose refrigerant state in the stopping state of the apparatus enters the supercritical state, restraining a pressure rise in the stopping state of the apparatus regardless of the length of a pipeline, and attaining high reliability and low cost.
A pipe inside diameter ratio of a liquid pipe to a gas pipe is set so that the average density of a refrigerant existing in the liquid pipe 7 and the gas pipe 10 connecting an outdoor unit 1 and indoor units 2a, 2b does not exceed an upper limit density allowed when the refrigeration air conditioning apparatus stops.
Inventors:
UNEZAKI FUMITAKE
Application Number:
JP2007315585A
Publication Date:
June 25, 2009
Filing Date:
December 06, 2007
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
F25B45/00; F25B1/00; F25B41/00
Domestic Patent References:
| JP2005249384A | 2005-09-15 | |||
| JP2002022297A | 2002-01-23 | |||
| JP2005221229A | 2005-08-18 | |||
| JPS6466559A | 1989-03-13 | |||
| JP2005226950A | 2005-08-25 |
Attorney, Agent or Firm:
Hisao Kobayashi
Kiyoshi Yasushima
Souji Sasaki
Noboru Omura
Takanashi Norio
Kiyoshi Yasushima
Souji Sasaki
Noboru Omura
Takanashi Norio