| 摘要 |
According to the present invention, a heating and cooling device for a high efficiency air source heat pump for saving energy increases heating capacity and efficiency even at 15 below zero and can stably perform a heating operation at low temperatures. Therefore, a heat pump can be used in more areas. Also, the temperature of hot water is increased from the traditional 60 to 65 to produce hot water. Therefore, heat storage and heating efficiency is increased. Also, when a load is maximized during summer and winter, a power load can be reduced by controlling the operation. In addition, the heating and cooling device for a high efficiency air source heat pump for saving energy according to the present invention comprises a refrigerant liquid injection device; an overload control device; a refrigerant inlet; a refrigerant outlet; and a sub inlet. A compressor, which is connected to an intermediate heat exchanger of the overload control device, is installed in a cooling system. Therefore, when a refrigerant circuit is overloaded due to overheating of the refrigerant or the compressor or due to a problem of abnormal high pressure of the refrigerant, vaporization of the refrigerant accommodated in an accumulator is induced by the refrigerant liquid injection device; or overload pressure of the refrigerant is controlled by the overload control device; or part of the refrigerant passing through the overload control device is additionally injected into the compressor. Accordingly, the safety and performance of the cooling system can be improved. |
