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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

Inactive Publication Date: 2017-03-22
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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Problems solved by technology

[0004] Aiming at the defects of the prior art, the present invention provides a frequency conversion air-cooled heat pump unit and its control method and control device, which can solve the problem that the prior art cannot accurately adjust the speed of frequency up and down, which easily leads to serious water temperature overshoot and The problem of poor user effect due to downtime or slow adjustment

Method used

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

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Embodiment Construction

[0052] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0053] figure 1 It is a schematic flow chart of a control method of a variable frequency air-cooled heat pump unit in an embodiment of the present invention, such as figure 1 As shown, the method includes the following steps:

[0054] S101: Determine the rate of change of the outlet water temperature according to the change value of the outlet water temperature of the variable frequency air-cooled heat pump unit in the preset collection per...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B49/02
CPCF25B49/022F25B2400/077F25B2600/021F25B2700/21
Inventor 李钱生
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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