Variable-frequency air-cooled heat pump unit and control method and device thereof

An air-cooled heat pump and control method technology, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve problems such as water temperature overshoot, slow user effect, and inability to accurately adjust the speed of frequency up and down frequency, etc., to achieve Prevent shutdown or frequency adjustment too slowly, prevent poor effect
CN106524613AInactive Publication Date: 2017-03-22GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GD MIDEA HEATING & VENTILATING EQUIP CO LTD
Publication Date
2017-03-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a variable-frequency air-cooled heat pump unit and a control method and device thereof. The control method comprises the following steps: determining the change rate of outlet water temperature according to the change value of the outlet water temperature of the variable-frequency air-cooled heat pump unit in a preset acquiring period; acquiring the change rate of running frequency of a compressor according to the change rate of the outlet water temperature; and controlling the running frequency of the compressor according to the change rate of the running frequency of the compressor. By measurement of the change rate of the total outlet water temperature, overall water capacity and load of a user can be judged preliminarily, frequency increasing or reducing rate of the compressor is regulated and controlled, and therefore, the circumstances that over-regulation of the water temperature is severe so that the unit stops or the frequency is regulated over slowly, and the effect is poor can be prevented effectively.
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Description

Technical field

[0001] The invention relates to the field of air conditioner control technology, in particular to a frequency conversion air-cooled heat pump unit and its control method and control device. Background technique

[0002] In the variable-frequency air-cooled heat pump unit, the capacity load of the water side system often affects the stability of the unit's operation, and there are often big differences in the use of different users.

[0003] The compressor frequency of the current variable frequency air-cooled heat pump water system is generally judged by the difference between the inlet / outlet water temperature and the outlet water set temperature. However, the current technology cannot accurately adjust the speed of frequency up and down according to the water capacity and internal machine load, which can easily lead to serious water temperature over-adjustment, shutdown or slow adjustment, and the user's use effect is poor. Summary of the invention

[0004] In vie...

Claims

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