Air source heat pump and its control method and device

Abstract

The invention relates to an air source heat pump and a control method and device thereof. The air source heat pump is provided with at least one heat exchange end, and the heat exchange end is used for heating a preset space. The method comprises obtaining a current water supply temperature and a current ambient temperature of the preset space when a working state of the heat exchange end changes;determining, according to the current water supply temperature and the current ambient temperature, a frequency adjustment amount of the air source heat pump required for reaching a target ambient temperature or a target water supply temperature; and controlling the air source heat pump to adjust the frequency according to the frequency adjustment amount. According to the air source heat pump andthe control method and device thereof, the temperature of the heating environment does not fluctuate too much when the working state of the heat exchange end changes, thereby effectively improving the comfort of the heating environment.

Description

technical field [0001] The present application relates to the technical field of heat exchange, in particular to an air source heat pump and its control method and device. Background technique [0002] In recent years, the air source heat pump (ASHP) green building technology used for heating in cold and hot summer and cold winter regions in my country has been highly praised. The transition from centralized heating with coal and charcoal-burning boilers to household heating with air-source heat pumps that consume electricity will greatly reduce the emission of harmful gases and the generation of smog, which has great positive significance for improving regional air quality. [0003] Air source heat pumps can be equipped with different and multiple terminals. Because they need to run for a long time during the heating season in cold regions, their operation control strategies such as start-up interval, defrosting and defrosting, and water temperature setting will greatly affe...

AI Technical Summary

Problems solved by technology

In daily heating operation, all heat exchangers are usually turned on and controlled according to the indoor temperature or outlet water temperature. Usually only local heating is required at night (such as the master bedroom and guest bedroom). Conventional heating systems cannot achieve intelligent switching, resulting in low energy efficiency at night.

[0004] Air source heat pumps are generally adjusted according to the water supply temperature or indoor temperature. When the terminal is temporarily activated or deactivated, it is easy to cause changes in the water supply temperature and indoor temperature, which in turn affects user comfort. The conventional control mode has a hysteresis for restoring the water temperature or room temperature.

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