Control method of compressor unit

A technology of compressor unit and control method, which is applied to refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve problems such as affecting the reliability of unit operation, compressor start and stop, and inability to balance compressor operation time.

Active Publication Date: 2015-11-04
GREE ELECTRIC APPLIANCES INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Both of these control methods may occur. The whole machine is not in the state of high-efficiency and energy-saving operation, and the running time of the compressors cannot be balanced. There may be one of the compressors that starts and stops frequently, which affects the operating reliability of the unit, especially when the user load fluctuates. Time

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  • Control method of compressor unit

Examples

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no. 1 example

[0018] This embodiment provides a technical solution of the control method of the compressor unit. In this technical solution, the control method of the compressor group includes: detecting the running time of each compressor in the compressor group; and performing start-stop control on the compressor according to the running time of the compressor.

[0019] see figure 1 , the control method of the compressor unit includes:

[0020] S11. Detect the cumulative running time of each compressor in the compressor group.

[0021] In this embodiment, a central processor is provided for the compressor group, and the accumulated running time of each compressor in the compressor group is detected by this central processor. The accumulative running time is the accumulative running time of each compressor in the compressor group when it is turned on, and the accumulative running time is generally not cleared. Only when the entirety of the compressor set stops running, the accumulated r...

no. 2 example

[0038] Based on the above-mentioned embodiments of the present invention, this embodiment further provides a technical solution of a control method for a compressor unit. In this technical solution, performing start-stop control on the compressor according to the accumulative running time of the compressor includes: when the start-up condition is met, the compressor with the shortest accumulative run-time is preferentially started; or when the stop condition is met, priority is given to Turn off compressors that have accumulated a long running time. Further, performing the start-stop control on the compressor according to the accumulated running time of the compressors further includes: when the start-up condition is met, if the accumulated running time of at least two compressors is the same, preferentially start the compressor whose name is ranked first or when the stop condition is met, if at least two compressors have the same cumulative running time, the compressor whose ...

no. 3 example

[0046] This embodiment provides a technical solution of the control method of the compressor unit. see image 3 , the control method of the compressor unit includes:

[0047] S31, judging whether the condition for turning on the compressor is satisfied, if yes, execute S32, if not, execute S34.

[0048] S32. Calculate the accumulative running time of the compressor.

[0049] S33, the compressor with the shortest accumulated running time is turned on.

[0050] At this time, if the accumulative running time of the two compressors is the same, the compressor with the lowest name in the system, that is, the compressor whose name is ranked first will be turned on first.

[0051] S34, judging whether the condition for shutting down the compressor is satisfied, if yes, execute S25, and if not, execute S27.

[0052] S35, calculating the accumulative running time of the compressor.

[0053] S36, the compressor with a long accumulative running time is turned on.

[0054] At this tim...

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Abstract

The embodiment of the invention discloses a control method of a compressor unit. The method comprises the following steps: detecting the cumulative running time of each compressor in the compressor unit; executing start and stop control on the compressor according to the cumulative running time of the compressor. The control method of the compressor unit, disclosed by the embodiment of the invention, is used for realizing balance of the running time of all the compressors in the compressor unit.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of heat pump devices, and in particular to a control method of a compressor unit. Background technique [0002] In large-scale air-cooled chillers, due to the large cooling capacity of a single unit, a single compressor cannot meet the cooling capacity requirements, and multiple compressor designs are often used. For multi-compressor units, there are two main load regulation methods. The first load adjustment method is: start the compressors one by one, and after the previous system compressor starts to full load, the next system compressor will start again; the second load adjustment method is: the compressors start at the same time, and the compressors between the compressors Run without correlation. [0003] These two control methods are both possible. The whole machine is not in the state of high-efficiency and energy-saving operation, and the running time of the compressors canno...

Claims

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Application Information

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IPC IPC(8): F25B49/02
CPCF25B49/022
Inventor 程琦陈培生
Owner GREE ELECTRIC APPLIANCES INC
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