Air conditioning host starting load control system and method

Abstract

An air conditioning unit start-up load control system includes an air conditioning unit and a load control server. The initial frequency determination module of the load control server uses the operating temperature at a first moment as the first temperature and determines the compressor frequency based on a comparison between a first temperature difference (between the first temperature and the target temperature) and a first preset temperature difference. The control switching module of the load control server uses the operating temperature at a second moment as the second temperature and determines whether to switch the compressor to a standard control program based on a comparison between the second temperature difference (between the second temperature and the target temperature) and a second preset temperature difference. When the control switching module determines that the compressor should not switch to the standard control program, the load rate control module of the load control server determines the compressor's load rate based on the first temperature difference between the second temperature difference and the first reference temperature difference.

Claims

1. An air conditioning unit start-up load control system, comprising: an air conditioning unit, including: a compressor; and a temperature sensor for sensing an operating temperature of the air conditioning unit; and a load control server connected to the air conditioning unit, the load control server comprising: an initial frequency determination module for using the operating temperature at a first time as a first temperature, and determining a frequency of the compressor based on a comparison of a first temperature difference between the first temperature and a target temperature and a first preset temperature difference; a control switching module for using the operating temperature at a second time as a second temperature, and determining whether to switch the compressor to a standard control program based on a comparison of a second temperature difference between the second temperature and the target temperature and a second preset temperature difference; and a load rate control module for determining a load rate of the compressor based on a first temperature difference difference between the second temperature difference and a first reference temperature difference when the control switching module determines not to switch the compressor to the standard control program.

2. The air conditioning unit starts the load control system as described in claim 1, wherein the load rate control module determines the load rate by comparing the first temperature difference with a first set value and a second set value.

3. The air conditioning unit starts the load control system as described in request item 2, wherein when the load rate control module determines that the first temperature difference is not less than the first set value, the load rate is increased; when it determines that the first temperature difference is not greater than the second set value, the load rate is decreased; when it determines that the first temperature difference is between the first set value and the second set value, the load rate is maintained.

4. The air conditioning unit starts the load control system as described in request item 1, wherein the first reference temperature difference is the first temperature difference.

5. The air conditioning unit start-up load control system as described in claim 4, wherein after the load rate control module determines the load rate, the second temperature difference is used as a second reference temperature difference; the control switching module is further configured to use the operating temperature at a third time as a third temperature, and determine whether to switch the compressor to the standard control program based on a comparison between the third temperature and the target temperature, a third temperature difference, and the second preset temperature difference; the load rate control module is further configured to determine the load rate based on a second temperature difference value between the third temperature difference and the second reference temperature difference when the control switching module determines not to switch the compressor to the standard control program.

6. The air conditioning unit starts the load control system as described in Request 1, wherein the operating temperature is a return water temperature or a return air temperature.

7. A method for load control of an air conditioning unit, comprising: taking an operating temperature of the air conditioning unit sensed by a temperature sensor of the air conditioning unit at a first time as a first temperature, and determining a frequency of a compressor of the air conditioning unit based on a comparison between the first temperature and a first temperature difference of a target temperature and a first preset temperature difference; taking the operating temperature at a second time as a second temperature, and determining whether to switch the compressor to a standard control program based on a comparison between the second temperature and a second temperature difference of the target temperature and a second preset temperature difference; and when determining that the compressor should not be switched to the standard control program, determining a loading rate of the compressor based on a first temperature difference value between the second temperature difference and a first reference temperature difference.

8. The air conditioning unit start-up load control method as described in claim 7, wherein when it is determined that the first temperature difference is not less than a first set value, the loading rate is increased; when it is determined that the first temperature difference is not greater than a second set value, the loading rate is decreased; when it is determined that the first temperature difference is between the first set value and the second set value, the loading rate is maintained.

9. The air conditioning unit start-up load control method as described in claim 7, wherein the first reference temperature difference is the first temperature difference, the air conditioning unit start-up load control method further includes: after determining the load rate, using the second temperature difference as a second reference temperature difference; using the operating temperature at a third time as a third temperature, and determining whether to switch the compressor to the standard control program based on a comparison between the third temperature and the target temperature and the second preset temperature difference; and when it is determined that the compressor should not be switched to the standard control program, determining the load rate based on a second temperature difference value between the third temperature difference and the second reference temperature difference.

10. The air conditioning unit start-up load control method as described in claim 7, wherein the operating temperature is a return water temperature or a return air temperature.

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