Heat pump unit control method and device, storage medium and heat pump unit

Abstract

The invention provides a heat pump unit control method and device, a storage medium and a heat pump unit. The heat pump unit control method comprises the following steps of judgment step and executingthe step, wherein the judgment step is used for judging whether the four-way valve is electrified or not in the heating mode; the executing the step and is used for judging whether the four-way valvereversing is abnormal or not in the judgment step, and a first operation is executed; the first operation comprises the steps that the four-way valve is powered down, the frequency of the compressoris executed to be increased to a preset frequency, the operation of the indoor outer fan or the indoor water pump is stopped and the opening degree of the throttling device is adjusted to at least oneof a preset opening degree. According to the heat pump unit control method and device, the voltage difference of the four-way valve can be improved in a short time, the normal reversing function of the four-way valve can be realized fast and effectively.

Description

technical field [0001] The invention relates to the field of control, in particular to a heat pump unit control method, device, storage medium and heat pump unit. Background technique [0002] At present, air source heat pump units are widely promoted. The four-way valve is one of the important components of the heat pump air conditioner. The heat pump air conditioner realizes the conversion between the cooling mode and the heating mode through the four-way valve, so as to meet the user's indoor temperature requirements in different seasons. The four-way valve is a pressure-difference-driven valve, which relies on the pressure difference at both ends of the piston to push the piston to achieve reversing. At present, the reversing control of the four-way valve is generally "direct power-on reversing". Due to the reliability of the four-way valve and the instability of the refrigeration system Affected by other factors, the four-way valve sometimes has an abnormal reversing ph...

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Problems solved by technology

[0003] The main purpose of the present invention is to overcome the defects of the above-mentioned prior art, and provide a heat pump unit control method, device, storage medium and heat pump unit, so as to solve the problem of easy reversing of the four-way valve in the prior art by only increasing the frequency of the compressor. Problems that cause the unit to shut down

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