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Control method and device for delaying frosting of air-conditioner and air-conditioner

A control method and control device technology, applied in the direction of heating and ventilation control systems, heating methods, space heating and ventilation, etc., can solve the problems of increasing the hidden danger of solder joint leakage, increasing costs, and being unable to continue heating, so as to improve the use of Experience and prevent the effect of increasing frost formation

Inactive Publication Date: 2019-01-01
NINGBO AUX ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the air volume of the outdoor fan is blocked due to frost, and the heating effect of the heat exchanger of the outdoor unit is gradually reduced due to the thickening of frost.
At present, the existing technology patent is to increase the welding connecting pipe to realize the connection of high and low pressure, and to supplement the low pressure through the solenoid valve switch, which not only increases the cost, but also increases the hidden danger of solder joint leakage, and at the same time, it will cause problems such as noise.

Method used

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  • Control method and device for delaying frosting of air-conditioner and air-conditioner
  • Control method and device for delaying frosting of air-conditioner and air-conditioner
  • Control method and device for delaying frosting of air-conditioner and air-conditioner

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Effect test

no. 1 example

[0047] The embodiment of the present invention provides an air conditioner 1, which is used to realize automatic defrosting while adjusting the indoor temperature, so as to prevent damage or failure of the air conditioner caused by frost. see figure 1 , is a functional block diagram of the air conditioner 1 provided by the embodiment of the present invention. The air conditioner 1 includes: a controller 2 , a memory 3 , a compressor 4 , an expansion valve 5 and an air conditioner frost delay control device 6 . Wherein, the controller 2 is electrically connected to the memory 3, the compressor 4, and the expansion valve 5, and at least one of the compressor frequency control methods may be stored in the memory 3 in the form of software or firmware.

[0048] Wherein, the memory 3 can be used to store software programs and units, such as program instructions / units corresponding to the air-conditioning delay frosting control device 6 and the method in the embodiment of the presen...

no. 2 example

[0052] This embodiment provides an air conditioner defrosting frosting control method, figure 2 A flow chart of the air conditioner delaying frosting control method provided in this embodiment is shown. The air conditioner defrosting frosting control method provided in this embodiment can defrost itself through the air conditioner 1 when frosting is detected, so as to prevent the frosting from getting thicker.

[0053] see figure 2 , the air conditioner defrosting frosting control method includes steps S10-S30.

[0054] Step S10: Obtain the low pressure and the inlet temperature of the outdoor evaporator every preset time interval.

[0055] When the air conditioner 1 is running stably, the low pressure value P detected by the low pressure sensor of the return air low pressure pipeline is obtained at a preset time interval s , get the outdoor evaporator inlet temperature value T detected by the temperature sensor at the inlet of the outdoor evaporator every preset time int...

no. 3 example

[0082] see Figure 5 , Figure 5 An air conditioner frosting delay control device 6 provided in a preferred embodiment of the present invention. It should be noted that the basic principles and technical effects of the air-conditioning delaying frosting control device 6 provided in this embodiment are basically the same as those of the first embodiment above. For a brief description, some parts not mentioned in this embodiment are Reference may be made to the corresponding content in the above-mentioned first embodiment.

[0083] see Figure 5 , the air-conditioning delay defrosting control device 6 includes an acquisition unit 7 , a determination unit 8 and an adjustment unit 9 .

[0084] Wherein, the acquiring unit 7 is used to acquire the low-pressure pressure and the inlet temperature of the outdoor evaporator every preset time interval.

[0085] When the air conditioner 1 is running stably, the low pressure value P detected by the low pressure sensor of the return air...

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Abstract

The embodiment of the invention provides a control method and device for delaying frosting of an air-conditioner and an air-conditioner. According to the method, low pressure and outdoor evaporator inlet temperature are obtained every preset time intervals; according to the obtained low pressure and the outdoor evaporator inlet temperature, whether the air-conditioner frosts or not is determined;and when the air-conditioner frosts, whether a compressor has enough reliability or not is determined according to the exhausting superheat degree. When the compressor has the enough reliability, thecompressor is controlled to reduce the working frequency, meanwhile, the opening degree of an expansion valve is increased to prevent frosting from aggravating, an outdoor fan does not need to reverseand defrost, while it is ensured that the exhausting superheat degree is enough, the reliability of a pressing machine is not influenced, frosting is prevented from aggravating more and more, and useexperience of users is improved.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to an air conditioner defrosting frosting control method, device and air conditioner. Background technique [0002] With the continuous progress of the economy, the application of air conditioners is becoming more and more extensive. Since it can bring comfortable experience to users by adjusting the indoor environment temperature, air conditioners have become one of the most common household appliances. [0003] When the ambient temperature is low during air conditioner heating and overheating, it may cause poor evaporation in the heat exchanger of the outdoor unit, which in turn leads to a decrease in the return air pressure of the system. When the suction pressure is lower than 0.7Mpa, or the inlet temperature of the outdoor heat exchanger is less than or equal to zero ℃, the surface of the outdoor evaporator will gradually frost. At the same time, the air volume of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/41F24F11/64F24F11/84F24F11/88
CPCF24F11/41F24F11/64F24F11/84F24F11/88
Inventor 侯丽峰秦宪赵攀汪云强闫博
Owner NINGBO AUX ELECTRIC
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