Heat pump system for guaranteeing countercurrent heat exchange of water side heat exchanger

Abstract

The invention discloses a heat pump system for guaranteeing countercurrent heat exchange of a water-side heat exchanger, which relates to the technical field of heat pumps. The system comprises a water-side heat exchanger, a compressor, an air-side heat exchanger and an electronic expansion valve. The water-side heat exchanger comprises a shell and a refrigerant coil; the shell is internally fixedwith the refrigerant coil, and the top of the shell is respectively provided with a first refrigerant inlet pipe and a second refrigerant inlet pipe communicated with the refrigerant coil, and the bottom of the shell is respectively provided with a first refrigerant outlet pipe and a second refrigerant outlet pipe communicated with the refrigerant coil. Through different acting sequences and modes of a first solenoid valve, a second solenoid valve, a third solenoid valve, a fourth solenoid valve and a four-way valve, the refrigerant constantly performs countercurrent heat exchange with waterin the water-side heat exchanger under two modes of heating and refrigeration, the heat exchange efficiency of the water-side heat exchanger is improved, and the needs of the cold quantity and the heat quantity in the life of people can be met.

Description

technical field [0001] The invention belongs to the technical field of heat pumps, in particular to a heat pump system for ensuring countercurrent heat exchange of a water-side heat exchanger. Background technique [0002] With the increasing shortage of limited energy sources such as petroleum, people are gradually developing new energy sources; and heat pump technology is a high-efficiency energy-saving device that makes full use of low-grade heat energy, so heat pump systems are increasingly used to produce domestic hot water Heating with floor heating, the heat pump system can be used to separately produce domestic hot water, which can be used as a heating system alone, or the water side heat exchanger can be used to produce domestic hot water while heating for floor heating. Because of its good energy-saving effect, it is widely used in daily life. widely used by people. [0003] At present, the existing heat pump system or water-side heat exchanger can only ensure the...

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Problems solved by technology

[0003] At present, the existing heat pump system or water-side heat exchanger can only ensure the reverse heat exchange between refrigerant and water in one mode of heating or cooling, but cannot guarantee the countercurrent heat exchange between refrigerant and water in multiple modes. Therefore, it is necessary to study a heat pump system that ensures the countercurrent heat exchange of the water side heat exchanger to meet people's daily needs for heating or cooling.

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