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A kind of method and air conditioner for suppressing frost formation of condenser of outdoor unit of air conditioner

An air conditioner outdoor unit and external condenser technology, applied in mechanical equipment, high-efficiency regulation technology, heating and ventilation control systems, etc. The effect of attaching flowers, increasing frost suppression judgment time, and improving work efficiency

Active Publication Date: 2021-07-16
四川长虹空调有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this control method can suppress condensation and frosting in a timely manner, experiments have proved that in the early stage of frosting, the frost layer is mainly formed by tree-shaped frost flowers. Only by increasing the fan speed, only one-way wind often cannot completely Inhibiting the adhesion of frost flakes will blow down the frost flakes that grow in the height direction or blow them away from the tuyere, making the frost layer thicker in one direction, but the effect of delaying frost formation is not ideal, and it is even more difficult to remove

Method used

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  • A kind of method and air conditioner for suppressing frost formation of condenser of outdoor unit of air conditioner
  • A kind of method and air conditioner for suppressing frost formation of condenser of outdoor unit of air conditioner
  • A kind of method and air conditioner for suppressing frost formation of condenser of outdoor unit of air conditioner

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] like figure 1 As shown, a method for inhibiting the frosting of the condenser of the outdoor unit of the air conditioner comprises the following steps:

[0051] S1: When the air conditioner is in the heating mode, detect the temperature T of the outdoor condenser coil in real time;

[0052] S2: Judging whether the detected temperature T is less than or equal to the first temperature threshold T 1 , if yes, execute S3, otherwise return to step S1;

[0053] S3: Timing is performed according to the preset frost suppression judgment time, if the temperature T is always less than or equal to the first temperature threshold T during the timing process 1 , the air conditioner enters the anti-frost control after the timing ends, and executes step S4; otherwise, returns to execute step S1;

[0054] S4: anti-frost control: control the outdoor fan to perform forward operation and reverse operation in turn according to the preset forward operation time and reverse operation time...

Embodiment 2

[0059] like figure 2 As shown, on the basis of method embodiment 1, the following steps are also included:

[0060] S5: When the number of cycles n of forward and reverse operation of the outdoor fan reaches the preset cycle number threshold n 1 , judge T: if T is less than or equal to the first temperature threshold T 1 , the air conditioner stops frost suppression control and enters defrost control, and this method ends; if T is greater than the first temperature threshold T 1 And less than the second temperature threshold T 2 , return to step S4; if T is greater than or equal to the second temperature threshold T 2 , the air conditioner stops frost suppression control, the outdoor fan resumes normal operation, and this method ends.

[0061] The first temperature threshold T 1 less than the second temperature threshold T 2 . The T 1 It can be set as 0℃~-5℃, the T 2 It can be set at 0°C to 2°C. This embodiment and the defrosting control described below are prior ar...

Embodiment 3

[0065] like image 3 As shown, on the basis of method embodiment 1, the following steps are also included:

[0066] S5: When the number of cycles n of forward and reverse operation of the outdoor fan reaches the preset cycle number threshold n 1 , judge T: if T is less than or equal to the first temperature threshold T 1 , then execute step S6; if T is greater than the first temperature threshold T 1 And less than the second temperature threshold T 2 , return to step S4; if T is greater than or equal to the second temperature threshold T 2 , then execute step S7;

[0067] S6: Timing is performed according to the preset frost suppression judgment time, if the temperature T is always less than or equal to the first temperature threshold T during the timing process 1 , the air conditioner stops the anti-frost control and enters the defrosting control, and the method ends; otherwise, return to step S4;

[0068] S7: Timing is performed according to the preset frost suppressio...

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Abstract

The invention discloses a method for suppressing frosting of the condenser of an outdoor unit of an air conditioner and the air conditioner, comprising the following steps: S1: when the air conditioner is in the heating mode, detect the coil temperature T of the outdoor condenser in real time; S2: judge whether the detected T is less than equal to the first temperature threshold T 1 , once it is yes, execute S3, otherwise execute S1; S3: Time according to the frost suppression judgment time, if T is always less than or equal to T during the timing process 1 , the air conditioner enters anti-frost control after the timing ends, execute S4, otherwise execute S1; S4: anti-frost control: control the outdoor fan to perform forward and reverse operation in turn according to the preset forward operation time and reverse operation time. Loop at least once. The invention can effectively inhibit the attachment of frost, significantly delay the time of frosting, greatly reduce the frequency of defrosting, reduce the time of indoor temperature fluctuations caused by shutdown defrosting, and improve the comfort of the air conditioner.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, and in particular relates to a method for suppressing frosting of a condenser of an outdoor unit of an air conditioner and an air conditioner. Background technique [0002] With the improvement of people's living standards, the air conditioner has become an essential electrical appliance in every family. The cooling or heating process of the air conditioner is actually the process of heat exchange. When the heat pump is running for heating, the outdoor condenser Absorb the heat from the outdoor side, and the air conditioning system transfers the heat to the indoor side for heat release. When the outdoor temperature is low, frost will form on the outdoor condenser, which will affect the heat absorption effect of the outdoor side, thereby affecting the heating effect. The processing method to frosting in traditional technology is: when frosting reaches a certain degree. The air condition...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/65F24F11/64F24F11/41F24F11/77F24F11/89F24F11/61F24F110/12
CPCF24F11/41F24F11/61F24F11/64F24F11/65F24F11/77F24F11/89F24F2110/12Y02B30/70
Inventor 李越峰张娣
Owner 四川长虹空调有限公司