Method for judging leakage of refrigerant in inverter air conditioner and inverter air conditioner

The technology of an inverter air conditioner and a determination method, which is applied to the testing of machines/structural components, instruments, heating methods, etc., can solve the problems of refrigerant leakage and misjudgment in the inverter air conditioner, and achieve the effect of reducing misjudgment.

Active Publication Date: 2013-11-13
WUHAN REFRIGERATION EQUIP OF MIDEA GROUP
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Problems solved by technology

[0006] The purpose of the embodiment of the present invention is to provide a method for judging refrigerant leakage in an inverter air conditioner, aiming to solve the problem of misjudgment easily caused by the prior art

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  • Method for judging leakage of refrigerant in inverter air conditioner and inverter air conditioner
  • Method for judging leakage of refrigerant in inverter air conditioner and inverter air conditioner

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Embodiment Construction

[0040] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0041] The specific embodiment of the present invention provides a method for judging refrigerant leakage in an inverter air conditioner, the method is completed by the inverter air conditioner, the method is as follows figure 1 shown, including the following steps:

[0042] 101. Obtain the temperature T of the coil of the indoor unit before the operation of the compressor of the inverter air conditioner;

[0043] 102. Operate at the highest windshield and the operating frequency of the compressor is greater than the first set frequency f 1 After running for the first set time t 1 , to obtain th...

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Abstract

The invention is suitable for the technical field of household appliances, and provides a method for judging leakage of a refrigerant in an inverter air conditioner. The method comprises the following steps: obtaining temperature T of a coil pipe of an indoor unit before the compressor of the inverter air conditioner is operated; obtaining temperature T1 of the coil pipe of the indoor unit and indoor temperature TC1; judging whether the absolute value of the difference of T and T1 is smaller than a first temperature threshold value d1 and moreover the absolute value of the difference of TC1 and T1 is smaller than d2, if so, adjusting the inverter air conditioner from the topmost wind gear to the lowest wind gear; operating the inverter air conditioner at the lowest wind gear for a second set time t2; obtaining the temperature T2 of the coil pipe of the indoor unit and the indoor temperature TC2; and when the absolute value of the difference of T and T2 is smaller than d1 and moreover the absolute value of the difference of TC2 and T2 is smaller than d2, determining the leakage of the refrigerant in the inverter air conditioner, and stopping the operation of the compressor. The technical scheme provided by the invention has the advantage of low misjudgment rate.

Description

technical field [0001] The invention belongs to the field of home appliances, and in particular relates to a method for judging refrigerant leakage in an inverter air conditioner and the inverter air conditioner. Background technique [0002] Existing room air-conditioning units generally adopt the following two methods for a large amount of refrigerant leakage: 1. Add a low-pressure switch to the return air pipe of the inverter compressor. When the pressure is lower than the set value, report the low-voltage protection and stop the operation of the compressor. 2. There is no special protective measure, relying on the top protector of the compressor for protection. [0003] The above-mentioned control method 1, since the outdoor working condition ranges from -15°C to 50°C, the suction pressure of the unit during defrosting is not considered, and the suction pressure of the compressor R410A ranges from 1.6bar to 10.8bar. Action, the setting value of the action is generally a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00G01M3/00
Inventor 朱磊
Owner WUHAN REFRIGERATION EQUIP OF MIDEA GROUP
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