| 摘要 |
PURPOSE:To improve an efficiency of heat exchanging operation, increase a volume of ventilated air and apply multi-functions to the air ventilation device by a method wherein a heat pump circuit capable of reversing a circulating direction of coolant is used. CONSTITUTION:In case of performing an air conditioning and air ventilation for heating a room, a heat exchanger 19 is applied as an evaporator and a heat exchanger 20 is applied as a condenser so as to perform an air ventilation. In this case, a sensible heat in the indoor air flow 24 is transmitted from the heat exchanger 19 to the coolant, carried to the heat exchanger 20 and then transmitted to the outdoor air feeding flow 25. In case of performing an air conditioning and air ventilation during a cooling of the room, the heat exchanger 19 is applied as a condensor and the heat exchanger 20 is applied as an evaporator. If a compressor 28 is terminated for its operation and only the fans 21 and 22 are operated to perform the air ventilation, it is possible to realize a normal simultaneous air feeding, discharging and ventilation and this operation is useful for the ventilation or a cooling of outdoor air. As described above, since the heat is carried by the heat pump into the air flow of low temperature from the air flow of hot temperature contacting with the heat exchanger of heat absorbing side in a heat pump circuit, a high efficient heat exchanging operation can be performed. Further, a gas-liquid heat exchanger is applied, so that the device is made small in size and a high volume of air ventilation can be attained. |
