| 摘要 |
PROBLEM TO BE SOLVED: To provide a member such as plate or the like constituting a heat exchanger between mediums with enhanced heat transfer properties irrespective of strength, by eliminating and reducing pressure difference between the mediums flowing in a primary side passage and a secondary side passage constituting the heat exchanger between the mediums. SOLUTION: A refrigeration cycle device comprises a primary side cycle A and a secondary side cycle B. The primary side cycle A comprises a compressor 10, a heat source side heat exchanger 20, a pressure reducing device 30 and the heat exchanger 40 between the mediums, and performs heat exchange with a heat source. The secondary side cycle B comprises a user side heat exchanger 60 and a fluid circulating device, and performs heat exchange with the primary side cycle through the heat exchanger between the mediums for executing heat transfer to the user side heat exchanger. The refrigeration cycle is further provided with a primary side pressure detecting means for detecting pressure in the primary side cycle of the heat exchanger between the mediums, and a pressure controlling means for controlling the pressure in the secondary side cycle within a specified pressure difference from the pressure detected by the primary side pressure detecting means.
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