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Expansion valve control method and device, multi-connected air conditioner and computer storage medium

A control method and multi-connected air conditioner technology, applied in the fields of multi-connected air conditioners, expansion valve control methods, devices, and computer storage media, can solve the problem of large fluctuations in exhaust temperature, suction and exhaust pressure, affecting unit stability and user comfort experience, Problems such as exhaust temperature limit and frequency reduction, to reduce system parameter fluctuations, improve system operation stability and user comfort experience

Pending Publication Date: 2022-01-18
NINGBO AUX ELECTRIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing control technology, the valve steps of the internal unit are adjusted at the same time, and they are opened or closed uniformly, which will cause large fluctuations in the exhaust temperature of the system and the suction and exhaust pressure on the high and low pressure sides, and are prone to discharge temperature and / or Limit frequency reduction when the exhaust pressure is too high, or even a protective shutdown, which affects the stability of the unit and the user's comfort experience

Method used

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  • Expansion valve control method and device, multi-connected air conditioner and computer storage medium
  • Expansion valve control method and device, multi-connected air conditioner and computer storage medium

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Embodiment 1

[0046] Such as figure 2 As shown, the present invention proposes an expansion valve control method, which is applied to a multi-connected air conditioner, and the method includes the following steps:

[0047] S1: Receive throttle feedback signals from multiple indoor units at regular intervals;

[0048] S2: According to the throttling feedback signals of multiple indoor machines, classify all target indoor machines into the first target indoor machine whose valve needs to be opened larger and the second target indoor machine whose valve needs to be closed small;

[0049] S3: The first target internal unit adjusts its internal unit expansion valve according to the first priority, and the second target internal unit adjusts its internal unit expansion valve according to the second priority;

[0050] S4: After both the first target indoor unit and the second target indoor unit are adjusted for peak shifting, return to step S1.

[0051] Specifically, the purpose of throttling t...

Embodiment 2

[0080] The present invention also provides an expansion valve control device for performing the method described in Embodiment 1, the device comprising:

[0081] Signal receiving module: used to regularly receive throttle feedback signals from multiple indoor units;

[0082] Classification module: used to classify all target internal machines into the first target internal machine whose valve needs to be opened larger and the second target internal machine whose valve needs to be closed small according to the throttle feedback signal;

[0083] Peak staggering adjustment control module: used to control the peak shifting adjustment of the first target internal machine to its internal machine expansion valve according to the first priority order, and control the second target internal machine to perform the second priority on its internal machine expansion valve. Priority staggered peak adjustment;

[0084] Loop control module: used to control the signal receiving module to rece...

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Abstract

The invention provides an expansion valve control method and device, a multi-connected air conditioner and a computer storage medium. The method is applied to the multi-connected air conditioner and comprises the following steps that S1, throttling feedback signals of multiple indoor units are received regularly; S2, all target indoor units are classified into first target indoor units with valves needing to be turned on and second target indoor units with valves needing to be turned off according to the throttling feedback signals of the multiple indoor units; S3, the first target indoor units carry out peak shifting adjustment on indoor unit expansion valves according to the first priority sequence, and the second target indoor units carry out peak shifting adjustment on the indoor unit expansion valves according to the second priority sequence; and S4, after peak shifting adjustment of the first target indoor units and the second target indoor units is completed, the step S1 is returned to. According to the expansion valve control method and the device, the multi-connected air conditioner and the computer storage medium provided by the invention, system parameter fluctuation of the multi-connected air conditioner is reduced under an indoor unit throttling scene, and the system operation stability and the user comfort experience are improved.

Description

technical field [0001] The present invention relates to the technical field of air conditioning, in particular to an expansion valve control method and device, a multi-connected air conditioner, and a computer storage medium. Background technique [0002] Multi-connected air conditioners generally consist of multiple outdoor units paired with multiple indoor units, and the cooling mode uses the indoor unit to throttle. In the existing control technology, the valve steps of the internal unit are adjusted at the same time, and they are opened or closed uniformly, which will cause large fluctuations in the exhaust temperature of the system and the suction and exhaust pressure on the high and low pressure sides, and are prone to discharge temperature and / or Limit frequency reduction when the exhaust pressure is too high, or even a protective shutdown, will affect the stability of the unit and the user's comfort experience. [0003] specific as figure 1 As shown in , it is a sc...

Claims

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Application Information

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IPC IPC(8): F24F11/30F24F11/61F24F11/64F24F11/65F24F11/84F24F11/88F24F110/10F24F110/12
CPCF24F11/30F24F11/61F24F11/64F24F11/65F24F11/84F24F11/88F24F2110/10F24F2110/12Y02B30/70
Inventor 陈冬吴武斌黄春任小辉
Owner NINGBO AUX ELECTRIC
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