Compressor staring and stopping control method for water-cooling compressor set with compressors
A multi-compressor and control method technology, which is applied in pump control, machine/engine, mechanical equipment, etc., can solve the problems of reduced service life of compressors, frequent fluctuations in water temperature, and reduced comfort in use, so as to improve comfort and suppress The effect of frequent start and stop, precise increase and decrease of stop
Active Publication Date: 2014-12-03
QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD +1
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Problems solved by technology
After that, the frequent cycle of the operation process will cause the compressor to start and stop frequently, and the service life of the compressor will be reduced.
And due to the frequent start and stop of the unit, the water temperature fluctuates frequently, and the comfort of the user decreases accordingly.
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[0034] The specific embodiments of the present invention will be described below with reference to the accompanying drawings.
[0035] reference figure 1 , The present invention provides a compressor start-stop control method for a water-cooled multi-compressor unit. In this method, first set the preset water temperature value in the program controller. According to an embodiment of the present invention, a water temperature sensor is installed in the unit to measure the real-time water temperature value when the unit is running, and send the measured water temperature value to the program controller. The program controller is also preset with an increasing opening temperature difference zone for increasing the compressor, and a decreasing stop temperature difference zone for reducing and stopping the compressor. According to an embodiment of the present invention, in step 1 of the control method of the present invention, the program controller calculates the temperature differe...
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The invention discloses a compressor staring and stopping control method for a water-cooling compressor set with a plurality of compressors. The method comprises the following steps: 1, judging whether the temperature difference between a real-time water temperature and a pre-set water temperature is in a pre-set additionally starting temperature difference range or a pre-set additionally stopping temperature difference range or not, and when the temperature difference is in the pre-set additionally starting temperature difference range or the pre-set additionally stopping temperature difference range, carrying out the step 2; 2, judging whether the additionally starting interval time or the additionally stopping interval time between compressors reaches the pre-set interval time or not, and when the additionally starting interval time or the additionally stopping interval time between compressors reaches the pre-set interval time, carrying out the step 3; 3, judging whether the additionally starting requirements or the additionally stopping requirements are met or not, when the additionally starting requirements or the additionally stopping requirements are met, additionally starting a compressor or additionally stopping a compressor, while when the additionally starting requirements or the additionally stopping requirements are not met, carrying out the step 4; and 4, judging whether the additionally starting auxiliary requirements or the additionally stopping auxiliary requirements are met or not, when additionally starting auxiliary requirements or the additionally stopping auxiliary requirements are met, additionally starting a compressor or additionally stopping a compressor, while when the additionally starting requirements or the additionally stopping requirements are not met, carrying out the step 1. The invention further discloses another compressor staring and stopping control method for the water-cooling compressor set with the compressors; and the method comprises a plurality of processes which are carried out according to the steps (1, 2, 3 and 4).
Description
Technical field [0001] The invention relates to the field of air conditioner manufacturing, in particular to a compressor start-stop control method of a water-cooled multi-compressor unit. Background technique [0002] Now more and more users are beginning to use air conditioners as equipment for cooling in summer and heating in winter. Especially in some shopping malls and hotels, there are more and more water-cooled units using multiple compressors. In the cooling operation of the system, the start and stop of the compressor is one of the most common phenomena. When the unit is in operation, as long as the water temperature reaches the set water temperature of the unit, the compressor will stop. When the water temperature drops below the set value, the compressor will start again and restart cooling. [0003] For the start and stop control of the compressor of the chiller, a method commonly used at present is the differential method. For example, during cooling operation, when ...
Claims
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IPC IPC(8): F04B49/06
Inventor 国德防徐广明肖成进
Owner QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD