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A control method for an air conditioner and an electronic expansion valve

An electronic expansion valve and air conditioner technology, which is applied in heating and ventilation control systems, heating and ventilation safety systems, mechanical equipment, etc. Different parameters, etc., to achieve the effect of improving accuracy, accurate target suction superheat correction, and improving practicability and accuracy

Active Publication Date: 2021-08-03
HISENSE (SHANDONG) AIR CONDITIONING CO LTD
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  • Abstract
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  • Claims
  • Application Information

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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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  • A control method for an air conditioner and an electronic expansion valve
  • A control method for an air conditioner and an electronic expansion valve
  • A control method for an air conditioner and an electronic expansion valve

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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, comprising: an outdoor unit; a compressor; an electronic expansion valve; an indoor unit connected to the electronic expansion valve; and a control unit configured to include: calculating the reference exhaust superheat of the compressor and the actual exhaust superheat; under pre-set selection conditions, the expansion valve control is performed according to the reference exhaust superheat and the actual exhaust superheat; wherein, the expansion valve control includes: reference exhaust superheat control, when the actual exhaust When the gas superheat meets the first selection condition, the opening value of the electronic expansion valve is corrected; the target suction superheat is controlled, and when the actual exhaust superheat meets the second selection condition, the target suction overheat of the electronic expansion valve is controlled. The temperature is corrected. An air conditioner disclosed by the invention can control the electronic expansion valves of each indoor unit to avoid the difference in operating state among the indoor units. The invention also provides a control method of the electronic expansion valve.

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 Patents(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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