Detection and protection method of lack of fluorine of air-conditioners

A detection method and air-conditioning technology, which are applied in heating methods, space heating and ventilation, and program control in sequence/logic controllers, etc., can solve the problems of difficult operation and low judgment accuracy for manual fluorine deficiency detection, and achieve guaranteed Service life, the effect of solving operational difficulties and avoiding damage

Inactive Publication Date: 2009-09-09
宁波海诚电器有限公司
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Problems solved by technology

[0009] The technical problem to be solved by the present invention is to overcome the defects of the prior art above, and provide a detection and protection met

Method used

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  • Detection and protection method of lack of fluorine of air-conditioners
  • Detection and protection method of lack of fluorine of air-conditioners
  • Detection and protection method of lack of fluorine of air-conditioners

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[0019] The present invention will be further described below in conjunction with the drawings and specific embodiments.

[0020] The equipment used in the fluorine deficiency detection and protection method of the air conditioner of the present invention includes a first temperature sensor for detecting the temperature of the inner coil, a second temperature sensor for detecting the ambient temperature, a single-chip microcomputer, and an alarm device. The first temperature sensor and the second temperature sensor are both Connect with the I / O port of the single-chip microcomputer in the air conditioner, such as figure 2 The temperature sensor shown is composed of a thermistor and an ordinary resistor, and the temperature is measured by changing the voltage value input into the single-chip microcomputer through the change of the thermistor resistance. The alarm device is also connected to the I / O port of the single-chip microcomputer in the air conditioner, such as image 3 As sho...

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Abstract

The invention discloses a detection and protection method of lack of fluorine of air-conditioners, comprising the following steps: a compressor runs under the state of sufficient fluorine and the absolute value of the difference value between the temperature value of an internal coil tube of the compressor and the temperature value of the environment is set at least as delta T0; cooling or heating mode is selected; after the compressor is started up to run for some time, the temperature values of the internal coil tube and the environment are measured and the absolute value delta T1 of the difference value between the temperature values of the internal coil tube and the environment is compared with the delta T0; if delta T1 is more than or equal to delta T0, the air-conditioners are diagnosed to not lack fluorine; if delta T1 is less than delta T0, the air-conditioners are diagnosed to lack fluorine and alarm; after the compressor keeps running for some time, the temperature values of the internal coil tube and the environment are measured again and the absolute value delta T2 of the difference value between the temperature values of the internal coil tube and the environment is compared with the delta T0; if delta T2 is more than or equal to delta T0, the air-conditioners are diagnosed to not lack fluorine and the alarm is gotten rid of; if delta T2 is less than delta T0, the air-conditioners are diagnosed to lack fluorine and stop running. The method solves the problems of difficult operation of artificially detecting lack of fluorine and low diagnosis accuracy.

Description

technical field [0001] The invention relates to a method of comparing the absolute value of the difference between the temperature of the inner coil of the air conditioner and the indoor environment temperature with the reference temperature value to determine whether the air conditioner is short of fluorine and the self-protection method of the air conditioner after the lack of fluorine, specifically a method Detection and protection method of fluorine deficiency in air conditioner. Background technique [0002] At present, the refrigerant used in air conditioners is mainly Freon, which is a fluorochloro compound that is easy to evaporate and liquefy. It absorbs heat when it evaporates and releases heat when it liquefies. Air conditioners use this feature to transfer energy. , to achieve the purpose of cooling and heating, but lack of fluorine is also a common fault in the use of air conditioners. If the air conditioner continues to run for a long time after lack of fluorin...

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Application Information

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IPC IPC(8): F24F11/00G05B19/04
Inventor 叶耘赵新荣
Owner 宁波海诚电器有限公司
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