| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve operation efficiency when operating a plurality of indoor loads in heat pump type air-conditioning equipment cooling and heating the indoor loads via a secondary coolant. <P>SOLUTION: The heat pump type air-conditioning equipment has a compressor 1, a four-way valve 2, an outdoor heat exchanger 6, a heat pump circuit 7 forming a closed circuit by connecting expansion valves 5a, 5b and coolant-to-coolant heat exchangers 4a, 4b by coolant piping, and sealing a primary coolant, and load circuits 11a, 11b circulating the secondary coolant to exchange heat with the primary coolant between the coolant-to-coolant heat exchanger 4 and the indoor load 9. It is characterized by that in the heat pump circuit 7, a plurality of the coolant-to-coolant heat exchangers 4a, 4b are arranged in parallel with each other, and a flow adjuster 3 is provided for controlling a flow rate of the primary coolant flowing through each coolant-to-coolant heat exchanger 4. <P>COPYRIGHT: (C)2007,JPO&INPIT |
