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Refrigeration control method of multi-connected indoor unit air conditioner, air conditioner and application

A technology of refrigeration control and inline unit, applied in the fields of refrigeration control devices, readable storage media, and air conditioners, can solve the problems of increased pressure loss of internal and external air pipes, insufficient refrigeration capacity, and rising evaporative pressure, so as to reduce the main piping pressure. loss, avoid insufficient refrigeration capacity, avoid the effect of increasing pressure loss

Active Publication Date: 2021-06-18
NINGBO AUX ELECTRIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In a multi-room air conditioner, if the branch pipe length difference between the indoor units is too large, the air pipe branch pipe of the indoor unit with a longer branch pipe will The pressure loss increases, which increases the pressure loss of the internal and external air pipes, resulting in an increase in the evaporation pressure; resulting in an increase in the evaporation temperature and insufficient refrigeration capacity

Method used

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  • Refrigeration control method of multi-connected indoor unit air conditioner, air conditioner and application
  • Refrigeration control method of multi-connected indoor unit air conditioner, air conditioner and application
  • Refrigeration control method of multi-connected indoor unit air conditioner, air conditioner and application

Examples

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no. 1 example

[0043] see figure 1 , an embodiment of the present invention provides a refrigeration control method for a multi-connected indoor air conditioner, comprising the following steps:

[0044] S110: Obtain the temperature value T reached by the heat exchanger of each internal unit within a preset time hex .

[0045] It should be noted that the temperature value T hex Indicates the temperature of the heat exchanger detected by the internal unit after the start-up cooling operation and after the preset time; the temperature value T of the heat exchanger can be obtained by setting a temperature sensor at the heat exchanger of the internal unit hex .

[0046] S120: According to the T of each internal unit hex with preset temperature value T s According to the size relationship of each internal unit, it is judged whether each internal unit is a long-divided piping internal unit or a short-divided piping internal unit.

[0047] It should be noted that if there is a large difference...

no. 2 example

[0082] see Figure 4 The embodiment of the present invention also provides a refrigeration control device 300 for a multi-connected indoor air conditioner, for example, including: a receiving module 310, configured to obtain the temperature value reached by the heat exchanger of each indoor unit within a preset time T hex ; Judgment module 320, for according to the T of each said internal machine hex with preset temperature value T s The relationship between the size of each internal unit is judged as a long-divided piping internal machine or a short-divided piping internal machine; the control module 330 is used for when multiple internal units include long-divided piping internal machines and short-divided piping internal machines , to control the compressor to operate under the target suction pressure value.

[0083] In a specific embodiment, the receiving module 310 , the judging module 320 and the control module 330 of the cooling control device 300 cooperate to implemen...

no. 3 example

[0085] see Figure 5 , the embodiment of the present invention also provides an air conditioner 400, including: an outdoor unit 410 and a plurality of inner units connected to the outer unit 410; the plurality of inner units include, for example, a first inner unit 421, a second inner unit 422, a second The third internal machine 423, the fourth internal machine 424, etc., the external machine 410 is provided with a readable storage medium storing a computer program and a packaging IC electrically connected to the readable storage medium, and the computer program is stored in the packaging IC When reading and running, the air conditioner implements the refrigeration control method described in the first embodiment above.

[0086] In a specific embodiment, the main pipe is connected to the external unit 410, and branch pipes are respectively connected between the main pipe and each internal unit; see Figure 5 , the length of the divergent piping connecting the first internal ...

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Abstract

The invention provides a refrigeration control method of a multi-connected indoor unit air conditioner, the air conditioner and application. The refrigeration control method of the multi-connected indoor unit air conditioner comprises the following steps: obtaining a temperature value Thex reached by a heat exchanger of each indoor unit within a preset time; according to a size relation between the Thex of each indoor unit and a preset temperature value Ts, judging whether each indoor unit is a long branch piping internal unit or a short branch piping internal unit; and when the multiple inner units comprise the long branch piping inner unit and the short branch piping inner unit, controlling a compressor to operate under a target air suction pressure value.

Description

technical field [0001] The present invention relates to the technical field of air conditioners, in particular, to a refrigeration control method for a multi-connected indoor air conditioner, a refrigeration control device for a multi-connected indoor air conditioner, an air conditioner, and a readable storage medium. Background technique [0002] In a multi-room air conditioner, if the difference in branch pipe length between the indoor units is too large, the pressure loss of the branch pipe of the air pipe of the indoor unit with a long branch pipe will increase, which will increase the pressure loss of the inner and outer air pipes, resulting in a decrease in the evaporation pressure. Rise; cause the evaporation temperature to rise and cause insufficient refrigeration capacity. Contents of the invention [0003] An object of the present invention is to prevent insufficient cooling capacity of an indoor unit having a long branch pipe length. [0004] In order to achiev...

Claims

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Application Information

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IPC IPC(8): F24F11/32F24F11/61F24F11/64F24F11/65F24F11/77F24F11/84F24F11/86F24F11/88F24F140/12F24F140/20
CPCF24F11/32F24F11/61F24F11/64F24F11/65F24F11/77F24F11/84F24F11/86F24F11/88F24F2140/12F24F2140/20Y02B30/70
Inventor 夏维倩
Owner NINGBO AUX ELECTRIC
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