| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce a load of an outdoor unit, and to improve the performance of the outdoor unit by recovering heat generated from a power module. Ž<P>SOLUTION: This water heat exchange device includes: a refrigerant circuit 10 which has a compressor 11 built in the outdoor unit driven by the power module 8, a plate-type heat exchanger 13 for performing heat exchange between water and a refrigerant, electronic control valves 14a, 14b for decompressing the refrigerant, an air-refrigerant heat exchanger 5 for performing heat exchange between air and the refrigerant, and a four-way valve 12 for switching a flow of the refrigerant discharged from the compressor to a heating side and a cooling side, and in which the refrigerant is made to circulate; and a heating/cooling water circuit 16 in which circulation water undergoing heat exchange by the plate-type heat exchanger and used for indoor heating and cooling is made to circulate. The water heat exchange device further includes a cooling water circuit 20 which is branched from the heating/cooling water circuit and in which circulation water for cooling the power module is made to flow. A exhaust heat recovery heat exchanger 19 for performing heat exchange between the circulation water and the power module and cooling the power module is provided in the cooling water circuit. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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