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Multi-connected air conditioner refrigerant leakage detection method and air conditioner

A multi-connected air conditioner and detection method technology, which is applied to control input related to air characteristics, heating methods, space heating and ventilation, etc., can solve the problems of multi-connected air conditioners such as refrigerant leakage, single detection method, and easy misjudgment. Achieve the effects of ensuring safety and reliability, preventing environmental pollution, and improving maintenance and treatment efficiency

Active Publication Date: 2021-12-17
NINGBO AUX ELECTRIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention aims to propose a method for detecting refrigerant leakage of multi-connected air conditioners and an air conditioner, so as to solve the problem in the prior art that the detection method is single and misjudgment is easy to occur

Method used

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  • Multi-connected air conditioner refrigerant leakage detection method and air conditioner
  • Multi-connected air conditioner refrigerant leakage detection method and air conditioner
  • Multi-connected air conditioner refrigerant leakage detection method and air conditioner

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Embodiment 1

[0074] Such as Figure 1~3 As shown, the present invention discloses a method for detecting refrigerant leakage of a multi-connected air conditioner, which includes the following detection steps:

[0075] S1: After the commissioning and operation of the multi-connected air conditioning system is completed, the system enters the stage of obtaining initial parameters in the "refrigerant leakage detection mode". The initial parameters include the inner ring temperature Tai 0 , outer ring temperature Tao 0 , exhaust high pressure Pd 0 , exhaust temperature Td 0 , Condenser outlet tube temperature Tdef 0 , each internal machine valve step PMV 0 -N, N is the serial number of the internal machine, calculate the average valve step

[0076] S2: When the cumulative running time t of the unit satisfies t 1 , the first stage of judgment is carried out;

[0077] Among them, the judgment conditions of the first stage include: obtaining the parameters of the first stage, by calculat...

Embodiment 2

[0161] The present invention also discloses an air conditioner, which includes an outdoor unit and a plurality of indoor units, and the method for detecting refrigerant leakage of a multi-connected air conditioner as described in Embodiment 1 is applied to the plurality of indoor units.

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Abstract

The invention provides a multi-connected air conditioner refrigerant leakage detection method and an air conditioner. The method comprises the following steps: S1, after debugging operation of a multi-connected air conditioner system is completed, the system enters an initial parameter acquisition stage of a refrigerant leakage detection mode; S2, when the accumulated operation time t of a unit meets t1, first-stage judgment is carried out; S3, the system continues to accumulate the operation time, and when t meets t2, second-stage judgment is carried out; S4, the system continues to accumulate the operation time, and when t meets t3, third-stage judgment is carried out; if it is judged that a refrigerant does not leak in the three stages, t is reset, and control in the third stage is repeated; if it is judged that the refrigerant leaks slightly in any stage, the system is prompted to leak fluorine; and if serious leakage is judged in any stage, the system forcibly enters a liquid collection mode to recover the refrigerant. According to the multi-connected air conditioner refrigerant leakage detection method and the air conditioner, the problems that a detection method is single, and misjudgment is likely to happen are solved.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a method for detecting refrigerant leakage of a multi-connected air conditioner and an air conditioner. Background technique [0002] In the installation scenario of a multi-connected air conditioner, a large number of indoor units and one or more outdoor units are usually equipped. Due to the large number of indoor units, the installation method is to use copper nuts at both ends of the joint pipe to connect with the pipe joint. , For split air conditioners, there is a risk of slight dew in a short period of time and leakage of the refrigerant in the air conditioner after a long period of time. After the refrigerant leaks, if the air conditioner is started for a long time without the user's knowledge, it will not only cause the performance of the air conditioner to decline, but even the compressor will be damaged if the leakage is serious. [0003] In the existing refr...

Claims

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Application Information

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IPC IPC(8): F24F11/36F24F11/61F24F11/64F24F11/65F24F11/70F24F11/88F24F110/10F24F140/20
CPCF24F11/36F24F11/61F24F11/64F24F11/65F24F11/70F24F11/88F24F2110/10F24F2140/20
Inventor 肖旭东黄春陈东
Owner NINGBO AUX ELECTRIC
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