Ice-plug resistance device for water/ground source heat pump system

Abstract

The invention discloses an ice-plug resistant device used for a water / ground source heat pump system. An alternating current power supply is electrically connected with an alternating current actuator; a direct current power supply is electrically connected with a direct current actuator and a controller respectively; a temperature sensor is electrically connected with the input terminal of a controller; the control terminal of the controller is electrically connected with an alternating current pump actuator and a direct current pump actuator; the output of the alternating current pump actuator is connected with an alternating current water pump; the output of the direct current pump actuator is connected with a direct current water pump; the water inlet pipes of the direct current water pump and the alternating current water pump are communicated with a hot water source; the water outlet pipes of the direct current water pump and the alternating current water pump are communicated with the inlet terminal of an evaporator by a normal-close electromagnetic valve and a check valve; the check valve is arranged at one side of the evaporator; and the normal-close electromagnetic valve is electrically connected with the controller. The ice-plug resistant device can greatly improve the efficiency of the host machine of the water / ground source heat pump system and utilizes the energy of the surface water to the maximum extent.

Description

Technical field [0001] The invention belongs to the field of water / ground source heat pumps, and particularly relates to an anti-icing block device used for water ground source heat pump systems. Background technique [0002] The water / ground source heat pump is an air conditioning technology that uses the solar energy stored in the earth's water as a source of cold and heat for conversion. It has the characteristics of high efficiency, energy saving, and environmental protection. When the water / ground source heat pump host heats in winter, it relies on pumping heat source water (surface water or groundwater) into the evaporator of the water / ground source heat pump system host, as a heat absorption source, through the evaporation and absorption of the refrigerant in the evaporator The heat in surface water. At this time, the temperature of the heat source water (surface water or groundwater) will drop by about 5°C before being discharged back to the surface or underground. After ...

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Problems solved by technology

When an accident occurs, there will be no ice blockage under such a high freezing point temperature protection. However, due to the restriction of this freezing point protection temperature, the host of the water / ground source heat pump system in winter cannot use the energy of the surface water more effectively, so that the current surface water The efficiency of the water / ground source heat pump system is very low in winter, and it cannot even be used in the coldest time. It depends on heating equipment such as boilers for heating and domestic hot water. This is why the water / ground source heat pump system for surface water cannot One of the most important reasons for the wide application in our country

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