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Control method and control device of multi-connected indoor unit and air conditioning unit

A control method and the technology of connecting internal units, which are applied in air-conditioning systems, noise suppression, heating and ventilation control systems, etc., can solve problems such as large throttling noise and system instability, so as to eliminate throttling noise and improve operation stability performance, system stability

Active Publication Date: 2022-03-04
NINGBO AUX ELECTRIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a control method, a control device and an air-conditioning unit of a multi-connected indoor unit, so as to alleviate the technology in the prior art that the multi-connected indoor unit is prone to large throttling noise and the system is unstable question

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  • Control method and control device of multi-connected indoor unit and air conditioning unit
  • Control method and control device of multi-connected indoor unit and air conditioning unit
  • Control method and control device of multi-connected indoor unit and air conditioning unit

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Embodiment Construction

[0049] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0050] The present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0051] see figure 1 and figure 2 , this embodiment provides a control method for a multi-connected internal unit, the multi-connected internal unit includes an expansion valve, and the target superheat degree is adjusted by adjusting the opening degree of the expansion valve; the control method includes:

[0052] S102, obtaining the opening adjustm...

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Abstract

The invention relates to the technical field of multi-connected indoor unit control, in particular to a multi-connected indoor unit control method and device and an air conditioning unit. The multi-connected indoor unit comprises an expansion valve, and the target superheat degree is adjusted by adjusting the opening degree of the expansion valve. The control method of the multi-connected indoor unit comprises the steps that the opening degree adjusting trend of an expansion valve is obtained; whether the opening degree adjusting trend is periodical fluctuation or not is judged; if yes, adjusting of the opening degree of the expansion valve is stopped, and the air speed of the indoor unit is controlled and adjusted; and if not, continuing to obtain the opening degree adjusting trend. According to the control method and device of the multi-connected indoor unit and the air conditioning unit, the problem that the expansion valve fluctuates up and down frequently is relieved, throttling noise can be reduced or even eliminated, the system is more stable, and the user experience degree is improved conveniently.

Description

technical field [0001] The invention relates to the technical field of multi-connected internal unit control, in particular to a control method, a control device and an air-conditioning unit for a multi-connected internal unit. Background technique [0002] The stability of the multi-connected internal unit is determined by whether the target superheat degree is reached, and the superheat degree needs to be adjusted by changing the opening degree of the expansion valve. [0003] However, the adjustment range of the expansion valve is fixed each time, and sometimes the target superheat degree is between two adjacent opening degrees. If the opening degree is increased, the actual superheat degree will be smaller than the target superheat degree. The heat will be greater than the target superheat. At this time, in order to achieve the target superheat, the expansion valve will frequently fluctuate up and down, which not only is prone to large throttling noise, but also causes s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F1/0003F24F11/30F24F11/61F24F11/64F24F11/77F24F11/84F24F11/88F24F13/24
CPCF24F1/0003F24F11/30F24F11/61F24F11/64F24F11/77F24F11/84F24F11/88F24F13/24Y02B30/70
Inventor 杨东林
Owner NINGBO AUX ELECTRIC
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