Air source heat pump defrosting method and system

An air source heat pump and outdoor air technology, applied in heat recovery systems, heating and ventilation control systems, heating and ventilation safety systems, etc., can solve problems such as waste of resources, and achieve the effect of avoiding waste and energy waste

Pending Publication Date: 2022-07-12
PINGGAO GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an air source heat pump defrosting method and system to solve the problem of waste of resources during the defrosting process

Method used

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  • Air source heat pump defrosting method and system
  • Air source heat pump defrosting method and system

Examples

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Embodiment Construction

[0034] The present invention will be described in further detail below with reference to the accompanying drawings.

[0035] System example:

[0036] The present invention provides an air source heat pump defrosting system, the system such as figure 1 As shown, including the heat exchanger coil 2 and the electrolytic cell 1, the electrolytic cell 1 and the heat exchanger coil 2 are both installed in the air conditioner outside the unit, and the electrolytic cell 1 is fixedly arranged below the heat exchanger coil 2 to ensure electrolysis. The electrolyte in the tank will not directly touch the heat exchanger coil, and a temperature and humidity sensor 10 is also installed on the heat exchanger coil 2 . The upper part of the fin heat exchanger coil 2 is provided with a sprayer 9, the sprayer 9 is connected to the electrolytic cell 1 through a first pipe 8, and the first pipe 8 is also provided with a solenoid valve 3 for opening and closing the pipeline, When the first pipeli...

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Abstract

The invention relates to an air source heat pump defrosting method and system, the melting point of ice can be reduced by using a salt solution, so that frost condensed on the surface of a heat exchanger can be quickly melted, a coil of the heat exchanger is defrosted by using the characteristics that the salt solution is not easy to freeze and does not cause pipeline blockage, and the salt solution is electrolyzed after primary defrosting, so that the heat exchange efficiency is improved. After electrolysis, the salt solution is continuously used for defrosting, so that the reutilization of the electrolyte is realized, the waste of the salt solution is avoided, meanwhile, the energy waste caused by defrosting by reverse refrigeration of the air conditioning unit is avoided, and the defrosting of the air source heat pump under the non-stop condition is realized. Besides, in the process of electrolyzing the salt solution, salt does not participate in the electrolytic reaction, so that the electrolyzed water is substantially electrolyzed, and discharged oxygen and hydrogen are environment-friendly gases and do not cause pollution to ambient air.

Description

technical field [0001] The invention relates to an air source heat pump defrosting method and system, belonging to the technical field of heat pump defrosting. Background technique [0002] During the operation of the air source heat pump in winter, when the air passes through the outdoor heat exchanger coil, water will condense on the coil, and the water will condense on the surface of the coil, which will then form ice or frost, which will form on the coil. Ice or frost on the tubes not only reduces the heat transfer area, but also reduces the amount of air that can pass. With the continuous increase of frost, it will affect the heat exchange between the air and the coil. [0003] The defrosting methods for the air source heat pump in the prior art are: shutdown defrosting, electric heating defrosting, hot gas bypass defrosting and reverse cycle defrosting. Reversing reverse cycle is a defrosting technology commonly used in heat pumps at present. During defrosting, the r...

Claims

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Application Information

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IPC IPC(8): F25B47/00F25B49/00F24F11/42F24F110/12F24F110/22F24F140/20
CPCF25B47/00F25B49/00F24F11/42F24F2110/12F24F2110/22F24F2140/20Y02B30/52
Inventor 田媛孙艳玲付豪高敏刘宁范晋卿朱晨光王丹洁王韶辉高群伟
Owner PINGGAO GRP
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