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Defrosting system and defrosting control method of air conditioner, and air conditioner

A control method and technology for an air conditioner, which are applied in the directions of control input involving air characteristics, space heating and ventilation control input, space heating and ventilation, etc., can solve the problems of high condensation pressure and temperature of the evaporator, and improve user experience. Effect

Pending Publication Date: 2019-03-08
AUX AIR CONDITIONING LTD BY SHARE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present invention aims to propose a defrosting system of an air conditioner to solve the problem of excessively high condensation pressure and temperature on the evaporator side when the existing air conditioner defrosts

Method used

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  • Defrosting system and defrosting control method of air conditioner, and air conditioner
  • Defrosting system and defrosting control method of air conditioner, and air conditioner
  • Defrosting system and defrosting control method of air conditioner, and air conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] combine figure 1 with figure 2 As shown, the defrosting system of the air conditioner in this embodiment includes a condensation branch 1 and a defrosting branch 2; the condensation branch 1 is provided with a first condenser 11 and a first solenoid valve 12 connected in series; the defrosting branch Road 2 is provided with a second condenser 21 and a second solenoid valve 22 connected in series; the first solenoid valve 12 is connected to the throttle mechanism 3, the evaporator 4 and the evaporator end 51 of the four-way valve 5 in sequence; the first condenser 11 Connected to the condenser end 52 of the four-way valve 5; the second solenoid valve 22 is connected to the condenser end 52 of the four-way valve 5; the second condenser 21 is connected to the throttle mechanism 3, the evaporator 4 and the four-way valve 5 in sequence Evaporator end 51. Wherein, the throttling mechanism 3 is one of a capillary tube and an electronic expansion valve, and in order to compr...

Embodiment 2

[0052] combine image 3 As shown, a defrosting control method of an air conditioner, wherein the air conditioner includes a condensation branch 1, a defrosting branch 2, wherein the defrosting control method includes:

[0053] S1, monitoring the coil temperature of the evaporator 4 when the air conditioner is in normal operation;

[0054] S2. Obtain the first coil temperature preset threshold of the evaporator 4 and the second coil temperature preset threshold of the evaporator 4;

[0055] S3. Control the conduction states of the condensation branch 1 and the defrosting branch 2 according to the coil temperature, the first coil temperature preset threshold, and the second coil temperature preset threshold.

[0056] The defrosting control method of the air conditioner of the present embodiment uses the coil temperature of the evaporator 4 as the monitoring parameter, because it can intuitively reflect the frosting state of the evaporator 4, so that the defrosting control metho...

Embodiment 3

[0062] An air conditioner, comprising the above-mentioned defrosting system of the air conditioner.

[0063] The air conditioner of this embodiment adopts the above-mentioned defrosting system of the air conditioner, which separates air conditioning refrigeration and defrosting by setting the condensation branch 1 and the defrosting branch 2, and controls the flow rate of the refrigerant in the defrosting branch 2. Defrost, to prevent the defrosting of the condenser in the original condensing system of the air conditioner, because the condenser in the original condensing system is too large, and its heat exchange capacity is large, causing the evaporation pressure on the condenser side to be too high, which in turn leads to evaporator 4 The condensing pressure and temperature on the side of the evaporator are too high, resulting in high pressure protection, and avoid the high temperature on the 4 side of the evaporator, which will cause the temperature inside the evaporator to ...

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Abstract

The invention provides a defrosting system and defrosting control method of an air conditioner, and the air conditioner. The defrosting system of the air conditioner comprises a condensing branch anda defrosting branch; the condensing branch is provided with a first condenser and a first solenoid valve which are connected in series; the defrosting branch is provided with a second condenser and asecond solenoid valve which are connected in series; the first solenoid valve is sequentially connected with a throttling mechanism, an evaporator and an evaporator end of a four-way valve, and the first condenser is connected with a condenser end of the four-way valve; and the second solenoid valve is connected with the condenser end of the four-way valve, and the second condenser is sequentiallyconnected with the throttling mechanism, the evaporator and the evaporator end of the four-way valve. According to the defrosting system of the air conditioner, by arranging the condensing branch andthe defrosting branch, refrigerating and defrosting of the air conditioner are separated to prevent the situations that when a condenser in an original condensing system of the air conditioner is adopted to conduct defrosting, the condenser in the original condensing system is too large, consequently the evaporating pressure of the condenser side is too high, then the condensing pressure and temperature of the evaporator side are too high, and high voltage protection is caused.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to an air conditioner defrosting system, a defrosting control method and the air conditioner. Background technique [0002] At present, during the use of the air conditioner, the evaporator is prone to frost due to the low temperature, and the heat pump needs to be used to defrost regularly. The condensing pressure and temperature on the evaporator side are too high, resulting in high pressure protection, and the temperature inside the evaporator rises too fast, which affects the use effect. Contents of the invention [0003] In view of this, the present invention aims to provide a defrosting system of an air conditioner to solve the problem of excessively high condensation pressure and temperature on the evaporator side during defrosting of an existing air conditioner. [0004] In order to achieve the above object, technical solution of the present invention is achieved...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B13/00F25B47/02F24F11/00F24F110/10
CPCF24F11/00F25B13/00F25B47/02F24F2110/10
Inventor 胡林锋吴小毛秦宪
Owner AUX AIR CONDITIONING LTD BY SHARE LTD
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