Control method and device for air conditioning system

A technology of an air conditioning system and a control method, applied in the field of air conditioning, can solve problems such as damage to the compressor and the entire system, capacity attenuation, etc., and achieve the effects of avoiding oil blockage of an expansion valve, ensuring service life, and improving user comfort.

Active Publication Date: 2014-10-22
MIDEA GRP CO LTD
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Problems solved by technology

[0005] In view of this, the object of the present invention is firstly to provide a control method for an air-conditioning system to solve the problem of capacity attenuation after low-temperature defrosting of the existing air-conditioning system using R290 refrigerant, oil plugging of the expansion valve, and damage to the compressor and the entire system. technical problem

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

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0025] figure 1 It is an implementation flow chart of the air conditioning system control method provided by the embodiment of the present invention; for the convenience of description, only the parts related to this embodiment are shown, as shown in the figure:

[0026] After the air-conditioning system is turned on and running, first enter step S10: control the air-conditioning system to run for a first predetermined time T0.

[0027] This step S10 is a preferred step of this control method, and it is not a necessary step. After the air-conditioning system is turned on, it runs for the first pr...

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Abstract

The invention belongs to the technical field of air conditioning, and particularly relates to a control method and device for an air conditioning system. According to the control method and device for the air conditioning system, all temperature parameters of the system after defrosting are acquired, the opening degree of operation of an electronic expansion valve is adjusted timely according to indoor temperature differences delta TIN and outdoor temperature differences delta TOU, the phenomenon of oil blockage of an expansion valve after low temperature defrosting of new refrigerant air conditioning systems such as R290 is effectively avoided, the using comfort of the new refrigerant air conditioning systems is improved, the service life of a compressor and the system is prolonged, and a reference basis is provided for better matching new refrigerants for studying novel compressor engine oil in the future.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, and in particular relates to a control method and a control device for an air conditioning system. Background technique [0002] At present, in the field of air-conditioning and refrigeration technology, most of the R410a refrigerants are used to replace the traditional R22 refrigerants. However, due to the high GWP value (Global Warming Potential) of R410a refrigerants, the global warming effect is becoming increasingly serious and the world Under the background that countries pay more and more attention to global climate change, it will also be gradually eliminated. Therefore, at present, it is more focused on the research of low-GWP refrigerants represented by R32 and R290. At the same time, the corresponding compressor research and development is also in progress. Among them, compressor lubricating oil, as an indispensable part of the air-conditioning system, has also received more ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00F25B49/02
Inventor 刘旭黎辉玲
Owner MIDEA GRP CO LTD
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