To provide a two-stage type refrigerant circuit capable of reducing its size and cost by reducing a size of a circuit used in air-cooling by water-cooling a low stage-side discharged refrigerant by drain water recovered from a machine body, and then air-cooling the same by a condenser.
As a compressor 11 constituting a refrigeration device 10, a two-stage compressor including a low stage-side compressing portion 11a and a high stage-side compressing portion 11b is used, and in a two-stage compression type refrigerant circuit, an outlet side of the low stage-side compressing portion 11a of the compressor 11 is connected to a condenser 2, one side of outlet sides of the condenser 2 is connected to a cooler 12, an outlet side of the cooler 12 is connected to an inflow side of the low stage-side compressing portion 11a of the compressor 11, the other side of the outlet side of the condenser 2 is connected to a suction side of the high stage-side compressing portion 11b of the compressor 11, and a discharge side of the high stage-side compressing portion 11b of the compressor 11 is connected to an inflow-side of the condenser 2. A discharged refrigerant of the low stage-side compressing portion 11a is water-cooled by drain water recovered from the machine body, and the air-cooled by the condenser.
MITSUBISHI ELECTRIC APPLIED REFRIGERATION SYSTEMS CO LTD
| JP2004286322A | 2004-10-14 | |||
| JP2003035460A | 2003-02-07 | |||
| JP2010071572A | 2010-04-02 | |||
| JPH08121889A | 1996-05-17 | |||
| JP2004085105A | 2004-03-18 | |||
| JP2000249413A | 2000-09-14 | |||
| JP2005226927A | 2005-08-25 |
Tadahiko Inaba
Kanako Murakami
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