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Air conditioner and control method of electronic expansion valves

An electronic expansion valve and air conditioner technology, applied in heating and ventilation control systems, mechanical equipment, heating and ventilation safety systems, etc., can solve the difference in cooling and heating effects, the difference in cooling and heating effects of indoor units, and the adjustment of electronic expansion valves Problems such as different parameters, to achieve the effect of improving accuracy, improving practicability and accuracy, and improving stability

Active Publication Date: 2020-10-16
HISENSE (SHANDONG) AIR CONDITIONING CO LTD
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  • Abstract
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Problems solved by technology

However, when one outdoor unit drives multiple indoor units to operate in a one-to-many air conditioner, the degree of superheat and subcooling of each indoor unit will vary due to the different installation environments and operating conditions, making different indoor units The adjustment parameters of the opening degree of the electronic expansion valve are different, which eventually leads to different cooling and heating effects of different indoor units.
[0004] Therefore, there is a need for an air conditioner that can avoid the difference in cooling and heating effects between indoor units caused by the different adjustment parameters of the opening of the electronic expansion valve.

Method used

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  • Air conditioner and control method of electronic expansion valves
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  • Air conditioner and control method of electronic expansion valves

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Embodiment Construction

[0068] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0069] The terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features.

[0070] In the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection"...

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Abstract

The invention discloses an air conditioner. The air conditioner comprises an outdoor unit, a compressor, electronic expansion valves, indoor units connected with the electronic expansion valves and acontrol portion. The control portion is configured to comprise the steps that the standard exhaust superheat degree and the actual exhaust superheat degree of the compressor are calculated; expansionvalve control is executed according to the standard exhaust superheat degree and the actual exhaust superheat degree under the preset selection condition; and expansion valve control comprises standard exhaust superheat degree control and target gas absorption superheat degree control, wherein in standard exhaust superheat degree control, the opening degree value of each electronic expansion valveis corrected when the actual exhaust superheat degree exceeds the first selection condition, and in target gas absorption superheat degree control, the target gas absorption superheat degree of eachelectronic expansion valve is corrected when the actual exhaust superheat degree meets the second selection condition. According to the air conditioner, the electronic expansion valves in the indoor units can be controlled, and the running state difference between the indoor units is avoided. The invention provides a control method of the electronic expansion valves.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to an air conditioner and a control method for an electronic expansion valve. Background technique [0002] As people's demand for living environment comfort continues to rise, the number of indoor air conditioners installed is also increasing. One-to-many air conditioners have the advantages of high installation flexibility and effective saving of outdoor installation space due to the characteristics of multiple indoor units sharing one outdoor unit, and have higher adaptability in environments with high installation requirements . [0003] At present, the common control method for electronic expansion valves of one-to-many air conditioners is to control by superheating, subcooling and exhaust temperature compensation. However, when one outdoor unit drives multiple indoor units to operate in a one-to-many air conditioner, due to the different installation environments an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/64F24F11/84F24F11/61F24F11/65F24F11/54F24F140/20
CPCF24F11/54F24F11/61F24F11/64F24F11/65F24F11/84F24F2140/20
Inventor 王志刚赵站稳吴林涛赵希枫
Owner HISENSE (SHANDONG) AIR CONDITIONING CO LTD
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