HEAT MEDIUM CONTROL DEVICE, COOLING AND HEATING SYSTEM, TEMPERATURE ADJUSTING DEVICE AND INCREASING METHOD OF COOLING AND HEATING SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a heat medium control device capable of freely selecting heat exchangers installed on cold side and heat side.SOLUTION: In a heat medium control device 10, a compressor 101, a four-way valve 102, a first expansion valve 104 and a second expansion valve 105 are stored in a housing 11. On the housing 11, four pipe connection ports are provided. A first pipe connection port C1 connects an external pipe to the first heat exchanger 20 with an internal pipe connected to the four-way valve 102. A second pipe connection port C2 connects an external pipe from the first heat exchanger 20 with an internal pipe to the first expansion valve 104. A third pipe connection port C3 connects an external pipe to a second heat exchanger 30 with the internal pipe from the second expansion valve 105. A fourth pipe connection port C4 and an external pipe from the second heat exchanger 30 are connected to the internal pipe to the four-way valve 102. The first pipe connection port C1 and the fourth pipe connection port C4 have inner diameter of the same size as each other, and the second pipe connection port C2 and the third pipe connection port C3 have inner diameter of the same size as each other.