| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a temperature control device capable of preventing an overheat operation of a compressor, preventing deterioration in performance of the compressor and lengthening the life.SOLUTION: A temperature control device includes: a cooling circuit 52 in which a cooling medium compressed by a compressor 40 and sent out is distributed, and one of the distributed cooling medium is circulated in a condenser 44, a first expansion valve 46, a cooler 32 and the compressor 40 in this order; a heating circuit 50 in which the other one of the distributed cooling medium joins with the cooling circuit 52 at an upstream side of the cooler 32, after passing through a heater 34 and a second expansion valve 48 in this order; a first injection circuit 54 which connects between a middle part between an outlet of the condenser 44 of the cooling circuit 52 and the first expansion valve 46, and an injection port 40a of the compressor 40; and a second injection circuit 58 which connects between a middle part between an outlet of the heater 34 of the heating circuit 50 and the second expansion valve 48, and the first injection circuit 54, or connects between the middle part between the outlet of the heater 34 of the heating circuit 50 and the second expansion valve 48, and the middle part between the outlet of the condenser 44 of the cooling circuit 52 and the first expansion valve 46.</p> |
