| 摘要 |
PURPOSE:To make possible high efficiency heat-pump type heating by a structure wherein an endothermic coil with flowing coolant is attach to an exhaust pipe and changeover valves are provided so that the coolant can run in the endothermic coil while heating the room. CONSTITUTION:In the heating operation, each of two way electromagnetic valves 4 is changed over to circulate the coolant along the full line arrow through compressor 3 pipe (b) stop electromagnetic valve 10 evaporator 9 receiver 5 capillary tube 6 endothermic coil 7 heat sensible pipe 20 compressor 3. Thus, the heating cycle makes a heat pump type and the potential heat of the high temperature exhaust gas in the auxiliary exhaust pipe 8 is absorbed by the coolant that has expanded adiabastically in the capillary tube 6 of the endothermic coil 7. To cool the room the two way electromagnetic valve is changed over so that the coolant flows along the dotted line arrow. Thus, the potential heat of the exhaust gas is recovered to obtain a heat pump type miniaturized heater of high efficiency. |
