Adaptive self-regulating energy-saving heat pump water heater and operation method thereof

Abstract

The invention discloses an adaptive self-regulating energy-saving heat pump water heater, which comprises a compressor 1 (1), a four-way valve 1 (3), a liquid accumulator 1 (7), an expansion valve 1 (9) and a vapor-liquid separator 1 (15) connected in turn in a first compressor system, a compressor 2 (2), a four-way valve 2 (4), a liquid accumulator 2 (8), an expansion valve 2 (10) and a vapor-liquid separator 2 (6) in a second compressor system, and a condenser assembly (11), an evaporator assembly (12) and a control valve (13) shared by the two systems. The heat pump water heater is characterized in that: the two liquid accumulators are connected together through a copper pipe, and inlets and outlets of the condenser assembly and the evaporator assembly are provided with six electromagnetic valves for controlling the flow direction of a refrigerant. The operation method for the adaptive self-regulating energy-saving heat pump water heater has a strong heat mode, an energy-saving mode and an adaptive mode. According to the environmental temperature and the demand of hot water, one of a plurality of operation modes is selected so as to improve the energy efficiency of the unit and save the energy.

Description

technical field [0001] The invention belongs to the technical field of heat pump hot water, in particular to an adaptive, self-regulating and energy-saving heat pump water heater. Background technique [0002] Heat pump hot water unit is an emerging hot water production equipment in recent years. It is powered by electricity, easy to install, short construction period, small footprint, no need for fuel storage, no transportation costs for slag discharge and three wastes treatment expenses, no need For the centralized hot water supply system in urban dense areas, the compression heat pump hot water unit shows obvious advantages. [0003] On the other hand, the heat pump can provide heat throughout the year and cool in summer by absorbing natural energy from the environment, waste heat, and waste heat. It is an efficient, energy-saving and pollution-free technology that utilizes renewable energy. The heating power of the heat pump water heating unit is more than 300%. With th...

AI Technical Summary

Problems solved by technology

[0005] In the current market of heat pump water heaters, due to the characteristics of high heating capacity, less hot water required for heating, and small heating temperature difference in summer, the working hours of heat pump water heaters are very short, and they only work for four or five hours a day. The hot water needed throughout the day can be heated, and the utilization rate of the unit is low. At the same time, a large amount of hot water is heated but not used, and a large amount of heat is dissipated, resulting in loss

In contrast to summer, in winter, the heating capacity is small, the amount of hot water required for heating is large, and the heating temperature difference is large. The working hours of heat pump water heaters are very long, and heating for 24 hours cannot meet the demand for hot water.

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