Title:
二元冷凍装置
Document Type and Number:
Japanese Patent JP5575191
Kind Code:
B2
Abstract:
A two-stage refrigeration apparatus includes a high-stage refrigeration cycle 20 including a high-stage-side refrigerant circuit including a high-stage-side compressor 21, high-stage-side condenser 22, high-stage-side expansion valve 23, and high-stage-side evaporator 24 connected by pipes, a low-stage refrigeration cycle 10 including a low-stage-side refrigerant circuit including a low-stage-side compressor 11, low-stage-side condenser 12, low-stage-side receiver 13, low-stage-side expansion valve 14, and low-stage-side evaporator 15 connected by pipes, a cascade condenser 30 including the high-stage-side evaporator 24 and low-stage-side condenser 12, a receiver heat exchanging portion 25 configured to cool the low-stage-side receiver 13, and a high-stage refrigeration cycle controller 32 configured to perform controlling so as to activate the high-stage-side compressor 21 when estimating a low-stage-side refrigerant will reach a supercritical state when the low-stage-side compressor 11 is inactive on the basis of the pressure of the low-stage-side refrigerant.
Inventors:
Keisuke Takayama
Tomotaka Ishikawa
Sugimoto 猛
Tetsuya Yamashita
Ikeda 隆
Tomotaka Ishikawa
Sugimoto 猛
Tetsuya Yamashita
Ikeda 隆
Application Number:
JP2012173770A
Publication Date:
August 20, 2014
Filing Date:
August 06, 2012
Export Citation:
Assignee:
Mitsubishi Electric Corp.
International Classes:
F25B7/00; F25B1/00
Attorney, Agent or Firm:
Hisao Kobayashi
Kiyoshi Ajima
Norio Takanashi
Santo Rare [origin]
Takashi Ogawa
Murata 健誠
Hajime Otani
Kiyoshi Ajima
Norio Takanashi
Santo Rare [origin]
Takashi Ogawa
Murata 健誠
Hajime Otani
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