| 摘要 |
PURPOSE:To enable raising the temperature of the air ejected in indoor heating and also suppling hot water by providing between a lower-stage compressor and a higher- stage compressor a vortex tube whose higher-temperature outlet is connected to a second condenser and whose lower-temperature outlet is connected to the higher-stage compressor. CONSTITUTION:The refrigerant gas discharged at a medium pressure from a lower- stage compressor 9 flows into the inlet of a vortex tube 11, inside which a swirl develops and separates into higher-temperature gas and a lower-temperature gas; the higher-temperature gas, whose temperature is much higher than the temperature of the medium-pressure refrigerant gas entering the vortex tube 11, flows out through an outlet on the high temperature side and into an indoor heat exchanger 16 to be used for heating air and then condenses into liquid, whereas the lower-temperature gas, whose temperature is much lower than the temperature of the medium-pressure refrigerant gas entering the vortex tube 11, flows out through an outlet on the low temperature side, is sucked into a higher-stage compressor 10 to undergo compression from medium pressure to high pressure, and then flows into a hot water-supplying heat exchanger 12 to be used for heating water and then condenses into liquid. By providing a single vortex tube a simple structure is rendered capable of raising the temperature of indoor heating higher and supplying hot water. |
