Air conditioner and defrosting control method

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, heating and ventilation control systems, etc., and can solve problems such as heating stagnation and affecting user comfort.

Active Publication Date: 2019-04-23
NINGBO AUX ELECTRIC +1
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned defrosting method stagnates indoor hea

Method used

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  • Air conditioner and defrosting control method
  • Air conditioner and defrosting control method
  • Air conditioner and defrosting control method

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Embodiment Construction

[0023] The principle of air conditioning for heating is to use the refrigerant passing through the indoor heat exchanger to release heat to the room to produce a heating effect. The refrigerant flowing out of the indoor unit enters the heat exchanger of the outdoor unit in a low-temperature liquid state after passing through the throttling element. At this time, in order to prevent the liquid from hitting the compressor, the refrigerant entering it needs to be converted into a gaseous state through the outdoor heat exchanger. back into the compressor. However, the outdoor heat exchanger needs to absorb heat from the outside when converting the refrigerant from liquid to gas. During the long-term heating process, the outdoor heat exchanger absorbs heat from the external unit, and frost condensation will inevitably occur on the outside of the outdoor heat exchanger. Frost condensation on the outdoor heat exchanger will directly affect the heating effect of the air conditioner. ...

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Abstract

The invention provides an air conditioner and a defrosting control method. The air conditioner comprises an intermediate heat exchanger, an indoor heat exchanger, an outdoor heat exchanger, a first throttling unit and a throttling assembly, wherein the indoor heat exchanger communicates with the outdoor heat exchanger through the throttling assembly; the outdoor heat exchanger is connected to theintermediate heat exchanger through the first throttling unit; and the intermediate heat exchanger is connected to a compressor of the air conditioner. According to the air conditioner, the throttlingassembly can be controlled to stop throttling in case of defrosting, and the outdoor heat exchanger is flushed through a high-temperature liquid refrigerant flowing out from the indoor heat exchanger; the intermediate heat exchanger replaces the outdoor heat exchanger as an evaporator, so that the air conditioner is kept in a heating mode in the whole defrosting process, and the indoor heating effect is not influenced. Therefore, the comfort under the defrosting mode of the air conditioner is improved, and the use experience of a user is increased.

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. Background technique [0002] During the heating operation of the air conditioner, frosting on the coil of the outdoor unit of the air conditioner is unavoidable. At the same time, the frost on the outdoor unit of the air conditioner will directly affect the heating effect of the air conditioner. Therefore, the air conditioner usually needs to enter the defrosting mode frequently after it has been running for a period of time. [0003] At present, the commonly used defrosting method is to temporarily switch the heating-cooling mode, and use high-temperature gaseous refrigerant to flush the outdoor coil. After the frost layer melts, the unit restarts the heating mode and continues to run. However, in the above-mentioned defrosting method, indoor heating stagnates during the defrosting process, which seriously affects us...

Claims

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Application Information

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IPC IPC(8): F24F11/42F24F11/64F24F11/65F24F11/84F25B47/02F25B41/06F24F110/10F24F110/12F25B41/31
CPCF24F11/42F24F11/64F24F11/65F24F11/84F25B47/02F25B2347/02F24F2110/10F24F2110/12F25B41/40F25B41/30
Inventor 陈东黄春刘合心任小辉
Owner NINGBO AUX ELECTRIC
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