Heat pump air conditioning water supply machine

Abstract

The invention provides a heat pump type heat-supplying machine for an air conditioner implementing the improvement of the refrigerating circulative efficiency of the refrigerating heat-storing operation. The invention comprises the refrigerating circulation having a compressor, an outdoor heat exchanger, an indoor heat exchanger, a four-way valve, a throttle mechanism; a high temperature heat storing water tank for storing the hot water which is heated as the high temperature via the heat exchange by the outdoor heat exchanger; and a low temperature heat storing water tank for storing the hot water which is heated as the low temperature via the heat exchange by the outdoor heat exchanger; in the heat pump type heat-supplying machine for an air conditioner, the conditioner stores the high temperature hot water to the high temperature heat storing water tank in the night power operation under the situation of reducing charging at the deep nights; and the conditioner stores the low temperature hot water to the low temperature heat storing water tank in the night power operation under the situation of charging at the deep nights; the invention uses the high temperature hot water in the high temperature heat storing water tank and the low temperature hot water to the low temperature heat storing water tank in mixing way.

Description

technical field [0001] The present invention relates to a heat pump type air conditioner and water supply machine equipped with a heat pump unit that circulates a refrigerant while forcibly expanding, evaporating, compressing, and condensing it to perform heat exchange. waste heat. Background technique [0002] Conventionally, heat pump type air conditioners and water heaters have been used to recover waste heat during cooling operation. [0003] Figure 6 and Figure 7 As shown, the conventional heat pump type air conditioner and water supply machine 61 includes: a plurality of indoor units 62 of the air conditioner; a hot water storage tank 63 for hot water supply; and a heat pump unit 64 for air conditioning operation and hot water supply operation; and has Refrigeration cycle 65 and water cycle 66. [0004] The heat pump unit 64 is provided with an air heat exchanger 67 as a component of the refrigeration cycle 65 and a hot water storage heat exchanger (water heating he...

AI Technical Summary

Problems solved by technology

[0007] However, in such cooling and hot water storage operation, since the hot water is stored at a high temperature of 65°C, the condensation temperature is about 60°C, which is higher than the condensation temperature of 45°C during the cooling operation, and the efficiency of the refrigeration cycle operation becomes lower. Difference

When the waste heat is used for hot water heating, the energy efficiency is improved, but there is still the disadvantage that the refrigeration cycle efficiency of the cooling hot water storage operation is worse than that of the cooling operation

[0008] In addition, Patent Document 1 below proposes a heat pump type air conditioner and water heater in which a heat storage / cooling tank and a water supply tank are incorporated in a refrigeration cycle, and can maintain a predetermined air conditioning capacity and hot water supply capacity without changing. Reduce the occupied volume of the heat storage and cold storage tank and the hot water supply tank; the heat storage and cold storage tank is that the refrigerant in the refrigeration cycle and the water as the heat storage material perform heat exchange in the heat storage heat exchanger, and the water can be cold storage and heat storage; the hot water supply tank is that the refrigerant and water exchange heat in the heat supply heat exchanger, and can supply hot water; Disadvantages of cooling operation and hot water supply operation

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