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Defrosting device, air conditioner and defrosting method

A technology for air conditioners and outdoor unit heat exchangers, which is applied in air conditioning systems, space heating and ventilation, heating methods, etc., and can solve problems such as increased energy consumption, difficulty in cleaning frost layers, and thick frost layers

Pending Publication Date: 2021-11-26
NINGBO AUX ELECTRIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the air conditioner is running in heating mode, frost is easy to form on the windward side of the heat exchanger of the outdoor unit. At present, the reverse cycle is mainly used for defrosting, but the reverse cycle alone takes a long time and the defrosting is not complete. Since the fins of the heat exchanger of the outdoor unit are installed vertically, the water after the frost on the upper part of the heat exchanger melts will flow down the fins of the heat exchanger and collect at the bottom of the heat exchanger. The outlet in the air conditioner mode is often located at the bottom, which makes the frost layer at the bottom of the heat exchanger difficult to melt and there will be residual ice. The thicker and thicker the heating capacity is gradually attenuated, resulting in increased energy consumption, which seriously affects the performance and reliability of the air conditioner.

Method used

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  • Defrosting device, air conditioner and defrosting method
  • Defrosting device, air conditioner and defrosting method
  • Defrosting device, air conditioner and defrosting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] A defrosting device 100, the defrosting device is arranged adjacent to the outdoor unit heat exchanger 210, including a defrosting module 110 and a support protection module 130, the defrosting module 110 includes an ultra-black carbon airgel unit 111 and a light emitting unit 112, the light emitting unit The light energy emitted by 112 is directly irradiated on the ultra-black carbon airgel unit 111; the support protection module 130 is arranged on the outside of the defrosting module 110, and is connected with the shell 220 of the outdoor unit 200 for supporting and protecting the defrosting module 110. protection.

[0061] The ultra-black carbon airgel unit 111 includes an ultra-black carbon airgel network 1111 and an ultra-black carbon airgel skeleton 1112 , and the ultra-black carbon airgel mesh 1111 is arranged on the ultra-black carbon airgel skeleton 1112 .

[0062] The light emitting unit 112 is disposed on the supporting protection module 130 .

[0063] The l...

Embodiment 2

[0077] The defrosting device in Example 1 can be used to defrost the heat exchanger of the outdoor unit alone, but in order to shorten the defrosting time and improve the defrosting effect, it is used together with the reverse cycle defrosting, and the defrosting effect is better. The embodiment specifically describes the defrosting method used in combination with the two defrosting methods.

[0078] see Figure 7 The schematic flow chart of the shown defrosting method, a defrosting method, includes the following steps:

[0079] Step Z100, after the air conditioner enters the reverse cycle defrosting mode, obtain the continuous running time Δt of the reverse cycle defrosting mode;

[0080] The reverse cycle defrosting mode means that when the air conditioner meets the defrosting conditions, the compressor stops running, the four-way valve changes direction, the compressor restarts, and the air conditioner enters the reverse cycle defrosting mode.

[0081] Step Z200, when the...

Embodiment 3

[0093] The defrosting method in this embodiment is different from the defrosting method in Embodiment 2 in that: the energizing current of the light emitting unit 112 can be adjusted according to the actual defrosting conditions.

[0094] see Figure 8 The schematic flow chart of the shown defrosting method, a defrosting method, includes the following steps:

[0095] Step S100, after the air conditioner enters the reverse cycle defrosting mode, obtain the continuous operation time Δt of the reverse cycle defrosting mode;

[0096] The reverse cycle defrosting mode means that when the air conditioner meets the defrosting conditions, the compressor stops running, the four-way valve changes direction, the compressor restarts, and the air conditioner enters the reverse cycle defrosting mode.

[0097] Step S200, when the continuous running time Δt is greater than or equal to the first preset time Δt 1 , that is, Δt≥Δt 1 , the defrosting device 100 starts to run, makes the ultra-b...

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Abstract

The invention provides a defrosting device, an air conditioner and a defrosting method. The defrosting device is arranged adjacent to an outdoor unit heat exchanger and comprises a defrosting module and a supporting and protecting module, wherein the defrosting module comprises ultra-black carbon aerogel units and light-emitting units; light emitted by the light-emitting units can directly irradiate the ultra-black carbon aerogel units; and the supporting and protecting module is arranged on one side of the defrosting module. The light energy of the light-emitting units is converted into heat energy through the photothermal conversion effect of the ultra-black carbon aerogel, so that the outdoor unit heat exchanger is defrosted, the evaporation speed of water generated by reverse circulation defrosting is increased, the water is prevented from flowing to the bottom of the heat exchanger along fins of the heat exchanger to be frosted and frozen, the overall defrosting time is shortened, and the defrosting effect of an outdoor unit is improved.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a defrosting device, an air conditioner and a defrosting method. Background technique [0002] When the air conditioner is running in heating mode, frost is easy to form on the windward side of the heat exchanger of the outdoor unit. At present, the reverse cycle is mainly used for defrosting, but the reverse cycle alone takes a long time and the defrosting is not complete. Since the fins of the heat exchanger of the outdoor unit are installed vertically, the water after the frost on the upper part of the heat exchanger melts will flow down the fins of the heat exchanger and collect at the bottom of the heat exchanger. The outlet in the air conditioner mode is often located at the bottom, which makes the frost layer at the bottom of the heat exchanger difficult to melt and there will be residual ice. The thicker and thicker the heating capacity is gradually attenuated, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F1/06F24F11/42F24F11/61F24F11/64F24F11/65F24F11/88F24F13/22F24S70/10F24F140/20
CPCF24F1/06F24F11/42F24F11/61F24F11/64F24F11/65F24F11/88F24F13/22F24S70/10F24F2140/20Y02E10/40
Inventor 陈伟胡志文孙义文韩劼成应必业
Owner NINGBO AUX ELECTRIC
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