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Air conditioner and defrosting control method of air conditioner

A control method and technology for air conditioners, which are applied in air conditioning systems, heating and ventilation control systems, heating methods, etc., can solve problems such as frost-free defrosting, and achieve the effect of timely and effective defrosting and avoiding frost-free defrosting.

Inactive Publication Date: 2016-03-02
TCL AIR CONDITIONER ZHONGSHAN CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to solve the technical problem of frost-free defrosting of existing air conditioners during heating

Method used

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  • Air conditioner and defrosting control method of air conditioner
  • Air conditioner and defrosting control method of air conditioner
  • Air conditioner and defrosting control method of air conditioner

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Embodiment Construction

[0030] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0031] The invention provides an air conditioner, referring to figure 1 , in one embodiment, the air conditioner includes an outdoor unit 1, an indoor unit (not shown in the figure), a four-way valve 2 and a compressor 3 connected by connecting pipes, and also includes a first temperature sensor 4, a second temperature sensor 5. The controller (not shown in the figure), the first temperature sensor 4 is arranged on the air inlet side of the outdoor unit 1, specifically on the air inlet side and on the heat exchanger, for detecting the air inlet temperature of the outdoor unit; The second temperature sensor 5 is arranged on the air outlet side of the outdoor unit 1, specifically on the air outlet side and on the heat exchanger, for detecting the air outlet temperature of the outdoor unit. The input end of the controll...

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Abstract

The invention discloses an air conditioner. The air conditioner comprises an outdoor unit, an indoor unit, a four-way valve and a compressor which are connected through connecting pipes, and further comprises a first temperature sensor, a second temperature sensor and a controller. The first temperature sensor is arranged on the air inlet side of a heat exchanger of the outdoor unit. The second temperature sensor is arranged on the air outlet side of the heat exchanger of the outdoor unit. The input end of the controller is electrically connected with the first temperature sensor and the second temperature sensor. The output end of the controller is electrically connected with the four-way valve. When the time spent by the air conditioner on heating circulation is longer than a preset first time threshold value and the time duration during which the temperature difference between the air inlet temperature and the air outlet temperature is smaller than or equal to a preset temperature threshold value is larger than a second preset time threshold value, the controller controls valve openings of the four-way valve to be switched, and the air conditioner is switched into defrosting circulation from heating circulation. The invention further discloses a defrosting control method of the air conditioner. By means of the air conditioner and the defrosting control method of the air conditioner, defrosting can be effectively conducted in time, and the situation that defrosting is conducted when no frost exists is avoided.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to an air conditioner and a defrosting control method for the air conditioner. Background technique [0002] When the air conditioner is heating, the outdoor unit often frosts. The traditional defrosting method is to judge whether to enter the defrosting mode by checking the coil temperature of the heat exchanger of the outdoor unit. This defrosting method has certain defects: because the process technology of the air conditioner is not perfect enough, and the temperature of the coil is affected by many other factors, such as the temperature of the coil is affected by the pressure, the control mode of the electronic expansion valve and the manufacturing process Therefore, even with repeated tests under the experimental conditions, the air conditioner may still have frost-free defrosting at low temperatures, and because the air conditioner enters the frost-free defrosting mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F1/00F24F11/02
Inventor 李昭红黄志方
Owner TCL AIR CONDITIONER ZHONGSHAN CO LTD
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