Four-way valve control method and device for multi-split air conditioner and multi-split air conditioner

A control method and four-way valve technology, which are applied in heating and ventilation control systems, space heating and ventilation, applications, etc., can solve the failure of four-way valve commutation, the low target operation frequency of compressors, and reduce one-to-many air conditioners. Stability and reliability issues, to achieve the effect of improving stability and reliability

Pending Publication Date: 2022-05-06
HISENSE (SHANDONG) AIR CONDITIONING CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, when the number of indoor units turned on by the user is small, for example, when the user only turns on one indoor unit for heating, the target operating frequency of the compressor may be relatively low due to the small load. Cause four-way valve reversing failure, thereby reducing the stability and reliability of the one-drag multi-air conditioner

Method used

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  • Four-way valve control method and device for multi-split air conditioner and multi-split air conditioner
  • Four-way valve control method and device for multi-split air conditioner and multi-split air conditioner
  • Four-way valve control method and device for multi-split air conditioner and multi-split air conditioner

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Embodiment Construction

[0041] Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary, and embodiments of the present invention are described in detail below.

[0042] Refer below Figure 1-Figure 3 A four-way valve control method and device for a one-driver-multiple air conditioner and a one-driver-multiple air conditioner according to an embodiment of the present invention are described.

[0043] figure 1 It is a flowchart of a four-way valve control method for a one-driver-multiple air conditioner according to an embodiment of the present invention. Such as figure 1 As shown, a four-way valve control method for one-to-multi-air conditioner, the method includes the following steps:

[0044] Step S1: Make sure that the four-way valve of the one-to-multiple air conditioner is powered on.

[0045] Step S2: Determine whether the four-way valve fails to change direction.

[0046] Step S3: If yes, obtain the targ...

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Abstract

The invention discloses a four-way valve control method and device for a multi-split air conditioner and the multi-split air conditioner. The method comprises the steps that it is determined that a four-way valve of the multi-split air conditioner is powered on; whether reversing of the four-way valve fails or not is determined; if yes, the target operation frequency after the compressor is started is obtained; according to the method, after the four-way valve of the multi-split air conditioner is powered on, the operation frequency of the compressor is adjusted according to the target operation frequency of the compressor, so that the reversing pressure difference of the four-way valve is increased, and the reversing action of the four-way valve is completed. Therefore, the reversing pressure difference of the four-way valve is increased, the four-way valve completes the reversing action, the problem of reversing failure of the four-way valve of the multi-split air conditioner is effectively solved, and the running stability and reliability of the multi-split air conditioner are improved.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a four-way valve control method and device for a one-drag multi-air conditioner and a one-drag multi-air conditioner. Background technique [0002] The commercial one-drag multi-air conditioner can be operated through one frequency conversion outdoor unit and multiple indoor units. The system control is more complicated, which involves the reversing control of the four-way valve. The reversing pressure difference of the four-way valve is directly related to the operating frequency of the compressor and the refrigerant flow rate, while the operating frequency of the compressor is mainly determined by the system load, and the system load is related to the number of indoor units turned on. The more indoor units are turned on, the greater the system load, which makes the compressor frequency increase faster, the system pressure difference build-up time is shorter, and the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/54F24F11/86F24F11/84F24F11/61F24F11/64F24F140/12
CPCF24F11/54F24F11/86F24F11/84F24F11/61F24F11/64F24F2140/12
Inventor 张金瑞陈琪高思云
Owner HISENSE (SHANDONG) AIR CONDITIONING CO LTD
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