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Method, device, heat pump and air conditioner for defrosting

A defrosting and heat exchanger technology, which is applied to refrigeration and liquefaction, lighting and heating equipment, refrigeration safety arrangements, etc. The exit condition is fixed and not intelligent, and the effect of solving the unclean defrosting

Active Publication Date: 2019-04-30
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing control method is not intelligent enough. When the defrosting is not clean, the defrosting time cannot be extended according to the actual situation, and the set defrosting exit temperature cannot be increased according to the actual situation to prolong the defrosting time. Causes frost to accumulate on the condenser

Method used

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  • Method, device, heat pump and air conditioner for defrosting
  • Method, device, heat pump and air conditioner for defrosting

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Embodiment Construction

[0014] The specific implementation manners of the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation manners described here are only used to illustrate and explain the embodiments of the present invention, and are not intended to limit the embodiments of the present invention.

[0015] An embodiment of the present invention provides a method for defrosting, which may include: judging whether the previous defrosting is clean; if the previous defrosting is not clean, increasing the temperature threshold for exiting defrosting and / or increasing the exit Defrost time threshold; when the refrigerant outlet temperature of the system’s external unit heat exchanger is not less than the increased temperature threshold for exiting defrost or when the defrosting time used is not less than the increased time threshold for exiting defrost case, control the system to e...

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Abstract

The embodiment of the invention provides a method and device for defrosting and an air conditioner, and belongs to the field of air conditioners. The method comprises the steps of judging whether defrosting carried out before is complete; increasing the temperature threshold of defrosting exit and / or increasing the time threshold of defrosting exit under the conditions that the defrosting carried out before is incomplete; and controlling the system to exit defrosting under the conditions that the coolant outlet temperature of the outdoor unit heat exchanger of the system is not lower than the increased temperature threshold of defrosting exit or the used time for defrosting is not shorter than the increased time threshold of defrosting exit. Under the conditions that the defrosting carried out before is incomplete, the temperature threshold or time threshold for defrosting exit is set dynamically, so that defrosting is more intelligent.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to a defrosting method, device, heat pump and air conditioner. Background technique [0002] The air conditioning system and heat pump system will form frost if they run for a long time in a low temperature environment. If the defrosting time and the defrosting exit temperature of the defrosting exit conditions are not set properly, each defrosting will be unclean, and the frost on the condenser will accumulate thicker and thicker. , thus greatly reducing the machine capacity and affecting the normal use of the machine. [0003] In the prior art, when the system reaches the defrosting condition and enters the defrosting, the system defrosting exit conditions are set according to the previous test results, and the defrosting time is reached or the temperature during the defrosting process is higher than the set defrosting exit temperature , exit defrosting. However, the existing con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B47/02F25B49/00
CPCF25B47/02F25B49/00F25B2347/023F25B2600/01F25B2700/2103
Inventor 刘帅帅
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD