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Control method and device of air conditioning system

A technology of air conditioning system and control method, which is applied in the direction of air conditioning system, control input related to air characteristics, space heating and ventilation control input, etc., and can solve the problems of low heat transfer and high outlet air temperature

Inactive Publication Date: 2019-01-25
GREE ELECTRIC APPLIANCES INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome at least to a certain extent the problems of low heat transfer and high air outlet temperature when reducing the condensing pressure by reducing the frequency of the compressor, this application provides a control method and device for an air conditioning system

Method used

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  • Control method and device of air conditioning system
  • Control method and device of air conditioning system
  • Control method and device of air conditioning system

Examples

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example 1

[0081] Example 1: In a three-external machine parallel system, the preset value Tp=43℃ corresponding to the system, and the water inlet temperature Ti=45℃ during the start-up process, the proportional coefficient α needs to be revised (that is, the proportional coefficient is reduced α value), the corresponding N value is easier to increase, that is, it is easier to trigger the parallel operation of multiple machines.

example 2

[0082] Example 2: In a three-external machine parallel system, the inlet water temperature Ti increases from 40°C to 45°C during operation, and the system corresponds to the preset value Tp'=43°C, and the proportional coefficient α needs to be revised (That is to reduce the value of the proportional coefficient α), the corresponding N value is easier to increase, that is, it is easier to trigger the parallel operation of multiple machines.

[0083] In some embodiments, the obtaining the preset value includes:

[0084] Determine the current working stage of the air conditioning system;

[0085] Obtain a preset value according to the current working stage.

[0086] In some embodiments, the obtaining the preset value according to the current working stage includes:

[0087] If the current working stage is the start-up preparation stage, the first preset value is acquired;

[0088] If the current working stage is the running stage, the second preset value is acquired;

[0089] Wherein, the f...

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Abstract

The invention relates to a control method and device of an air conditioning system. The method includes: acquiring the water temperature parameter of the air conditioning system; acquiring a preset value; comparing the water temperature parameter with the preset value, and controlling the operation of the outdoor unit of the air conditioning system according to the comparison result. The method has the advantages that water temperature parameter monitoring is added into the modularized air conditioning system, the normal operation mode is switched into a high-water-temperature operation mode when the water temperature parameter is higher than the preset value, and the system can easily trigger more outdoor units to participate in the operation to increase the area of outdoor heat exchangers; by the method, condensation pressure increasing during heat exchanging can be inhibited effectively, excessively high pressure is avoided, and refrigerant circulating quantity can be effectively improved due to the fact that more outdoor units participate in the system circulation to fast lower the temperature of the air discharged by indoor units.

Description

Technical field [0001] This application relates to the technical field of control of air conditioning systems, and in particular to a control method and device of an air conditioning system. Background technique [0002] When the water source multi-line system performs cooling under the condition of high inlet water temperature, the higher the inlet water temperature, the higher the corresponding system condensation pressure. When the condensing pressure rises to a certain level, it will adversely affect the system. The condensing pressure refers to the refrigerant pressure in the condenser pipeline, which is obtained by subtracting the compressor discharge pressure from the compressor discharge to the condenser pressure loss and the condenser resistance loss; the general system only detects the discharge pressure, but Due to the small pressure loss mentioned above, the condensing pressure can be approximately equal to the compressor discharge pressure. [0003] In related techno...

Claims

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Application Information

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IPC IPC(8): F24F11/63F24F11/64F24F11/65F24F3/06F24F110/10F24F140/20
CPCF24F3/06F24F11/63F24F11/64F24F11/65F24F2110/10F24F2140/20
Inventor 谭诚聪倪毅傅英胜刘群波薛寒东余凯
Owner GREE ELECTRIC APPLIANCES INC
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