A three-cycle hot water air conditioner

Abstract

The invention provides a three-cycle hot water air conditioner comprising a three-cycle refrigerant loop system and a hot water storage tank. The three-cycle hot water air conditioner is characterized in that a refrigerant loop especially comprises a three-way valve and two check valves; the loop connection way is that a compressor discharges air into the three-way valve; a first outlet of the three-way valve is connected with a hot water condensation heat exchanger and the other outlet is connected with a high pressure inlet of a four-way valve; the second connector, the third connector and the fourth connector of the four-way valve are connected with an outdoor wind heat exchanger, an indoor wind heat exchanger and an air-liquid separator respectively; another connector of the outdoor wind heat exchanger is connected with both an outlet of the first check valve and an inlet of the second check valve; an outlet of the second check valve and an outlet of the hot water condensation heat exchanger are connected in parallel into a liquid storage tank and connected in order to a filter and a flow controller, and are connected to a lower connector of the indoor wind heat exchanger and a parallel connector of the first check valve; the refrigerant loop system performs three kinds of cycles of refrigerating air and heating water, refrigerating air and heating water; a hot water cycle loop is provided with an auxiliary heater. The three-cycle hot water air conditioner is simple and reliable in structure, low in cost and good in energy-saving effect and has a promising market prospect.

Description

technical field [0001] The invention relates to the technical fields of refrigeration air conditioners, heat pump water heaters and energy saving. Background technique [0002] Existing heating and cooling air conditioners are only useful in summer and winter, and are generally idle in spring and autumn, resulting in seasonal waste of equipment and funds. The heat pump water heater, which utilizes the condensed heat of the compressed refrigeration cycle of the air conditioner to make hot water, can replace the household electric water heater, which can save 70% of electricity. The energy saving effect is obvious, and the market potential is huge. However, currently commercially available air source heat pump water heaters only have a single function of making hot water, and cannot realize the comprehensive utilization of cold and heat. However, there are many existing patented technologies involving multi-functional heat pumps. The structure of the refrigerant circulation l...

AI Technical Summary

Problems solved by technology

However, currently commercially available air source heat pump water heaters only have a single function of heating water, and cannot realize the comprehensive utilization of cold and heat.

However, there are many existing patented technologies involving multi-functional heat pumps. The structure of the refrigerant circulation loop is complex, the valves inevitably leak, the failure rate is high, and the reliability is poor; And has been authorized a number of related patent technologies, such as: a double-effect four-season energy-saving heating and cooling air-conditioning and hot water three-purpose machine (patent number: 00264455. .X), air source heat pump water heater with diversion sleeve heat exchanger water storage tank (patent number: 200510053315.3), heat pump water heater unit with water circulation heat exchange circuit (patent number: 200610085913.3), etc., still dislike refrigerant There are many valves in the circuit configuration, and there is still uneven storage of refrigerant in different heat exchangers, resulting in the phenomenon of more or less refrigerant in different cycles, which affects the efficiency of the unit; summarizing many years of research, the heat pump in winter The heating coefficient of performance (COP) is very low. Relying on the heat pump to circulate hot water and warm air in winter is very difficult and makes the equipment too complicated. After weighing the pros and cons, the present invention decides to cancel the heating cycle when the temperature drops to 0°C in winter

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