Heat pump module unit and anti-freezing control method thereof

Abstract

The invention discloses a heat pump module unit and an anti-freezing control method thereof. The anti-freezing control method comprises the following steps of receiving a signal for entering an anti-freezing mode; and controlling a circulating water pump to operate, obtaining the circulating water temperature after first set time, and adopting different levels of anti-freezing operation modes according to different circulating water temperatures. According to the method, before the actual anti-freezing operation mode is selected, circulating water is controlled to circulate for a period of time so that water in the heat pump module unit can flow, the detected circulating water temperature is real, the situation of "false alarm" caused by local low temperature and the positions of sensors arranged on a circulating water return pipe or a circulating water outlet pipe is avoided, and the burden brought to the heat pump module unit and the energy consumption burden brought to a user due to frequent starting of an anti-freezing mode are avoided.

Description

technical field [0001] The invention belongs to the technical field of heat pumps, and in particular relates to a heat pump module unit and an antifreeze control method thereof. Background technique [0002] Air source heat pump units are known by more and more people for their high heating and cooling performance coefficients. As air source heat pump technology becomes more and more mature, the application range of air source heat pumps has expanded from the Yangtze River Basin to the Yellow River Basin. Due to the low temperature in winter in this part of the region, when the heat pump is shut down in winter or does not work at night, there is a possibility that the water side heat exchanger may be damaged by freezing. [0003] At present, the more common solutions include: 1. The water pump runs for a long time in winter without stopping. 2. The unit and the water pump are linked to control. When the unit detects the need for antifreeze control, the water pump is first c...

AI Technical Summary

Problems solved by technology

However, with the popularization of air source heat pump units, the competition among heat pump equipment manufacturers has become more and more fierce, and each manufacturer has become more and more strict on the cost control of their own equipment, resulting in the general cancellation of unnecessary configurations such as electric heating. Lost

Therefore, this kind of anti-freezing control measures cannot be realized.

[0008] In addition, in the second and third antifreeze control methods, as long as the temperature of the circulating water is low, it will enter the antifreeze mode, and sometimes false alarms will occur.

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