Compressor load control method and device applicable to water side parallel-connected air cooled heat pump units

Abstract

The embodiment of the invention relates to a compressor load control method and a compressor load control device applicable to water side parallel-connected air cooled heat pump units. The method comprises the following steps: calculating initial number of air cooled heat pump units, corresponding to a refrigerating mode, of a compressor by combining a first algorithm according to the difference between an outlet water temperature and a set temperature of a water side system; calculating a correction quantity of the initial number of the air cooled heat pump units, corresponding to the refrigerating mode, of the compressor by combining a second algorithm according to the outlet water temperature and a change rate thereof of the water side system and the set temperature; calculating to obtain final numbers of the air cooled heat pump units corresponding to the refrigerating mode and a heating mode of the compressor according to the initial number and the correction quantity. According to the compressor load control method and the compressor load control device applicable to the water side parallel-connected air cooled heat pump units, the load of the compressor can be kept in a reasonable state; the situations that the compressor is shut down caused by the fact that the outlet water temperature of the water side system is overshot seriously and the user experiment is low caused by low work efficiency of the compressor because the outlet water temperature is adjusted slowly are prevented.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of air conditioning control, and in particular to a compressor load control method and device suitable for water-side parallel air-cooled heat pump units. Background technique [0002] The air-cooled heat pump unit is widely used because of its combination of cold and heat sources and high utilization rate of primary energy. In practical applications, each independent air-cooled heat pump unit is combined to form a modular air-cooled heat pump unit, so that the user can change the number of air-cooled heat pump units according to the actual load and increase the unit during subsequent use, because each The unit has inlet and outlet pipes of the same diameter, which is easy to install. [0003] In the air-cooled heat pump units connected in parallel with the water side system, the capacity of the water side system often leads to the stability of the operation of each air-cooled heat...

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Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the present invention provides a compressor load control method and device suitable for water-side parallel air-cooled heat pump units to solve the problem of serious water temperature overshoot when determining the loading and unloading of air-cooled heat pump units in the prior art. And the problem of poor user experience caused by downtime or slow water temperature adjustment

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