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Defrosting control method of heat pump system and heat pump system thereof

A technology of a heat pump system and control method, which is applied in the direction of refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve problems such as poor comfort, large indoor temperature fluctuations, and poor defrosting effects, so as to improve overall energy efficiency, The effect of simplifying the system structure

Inactive Publication Date: 2021-06-04
GREE ELECTRIC APPLIANCES INC
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  • Claims
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Problems solved by technology

The defrosting control method of the present invention can solve the problems of large indoor temperature fluctuations and poor comfort during the defrosting process; solve the problem of poor defrosting effect, which causes adverse effects on the performance of the air conditioner; the auxiliary heater brings heat to The outdoor unit optimizes the defrosting process and does not need to install a second throttling device, electromagnetic bypass device, etc. Simplify the system structure, maintain heating operation during the defrosting process, and further improve the overall energy efficiency of the heat pump system

Method used

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  • Defrosting control method of heat pump system and heat pump system thereof
  • Defrosting control method of heat pump system and heat pump system thereof

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Embodiment Construction

[0036] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals denote the same or similar parts in the drawings, and thus their repeated descriptions will be omitted.

[0037] Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or mo...

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Abstract

The invention provides a defrosting control method of a heat pump system. An auxiliary heater is additionally arranged in the heat pump system, and the auxiliary heater is arranged at one side of an indoor heat exchanger of the heat pump system; when the heat pump system enters a defrosting program, a four-way reversing valve of the heat pump system keeps the direction in a heating state, meanwhile, the threshold value of a throttling device is increased, and the defrosting program is carried out after the auxiliary heater is started; and heat is brought to one side of an outdoor unit heat exchanger of the heat pump system through the auxiliary heater to assist the outdoor unit heat exchanger in defrosting. By means of the defrosting control method, the problems that in the defrosting process, indoor temperature fluctuation is large, and comfort is poor can be solved; the bad influence on the performance of an air conditioner caused by the poor defrosting effect is solved; and the auxiliary heater brings heat to an outdoor unit to optimize the defrosting process, a second throttling device, an electromagnetic bypass device and other simplified system structures do not need to be arranged, heating operation is kept in the defrosting process, and the comprehensive energy efficiency of the heat pump system is further improved.

Description

technical field [0001] The invention belongs to the technical field of heat pump air conditioners, and in particular relates to a defrosting control method of a heat pump system and the heat pump system. Background technique [0002] When the heat pump air conditioner is in heating operation, when the temperature of the outdoor heat exchanger is lower than the dew point temperature of the humid air and the temperature of the outdoor heat exchanger is lower than 0°C, the water vapor in the air will condense into frost on the surface of the outdoor heat exchanger Floor. The frost layer will increase the thermal resistance of the outdoor heat exchanger, causing the heating capacity to attenuate. [0003] In the prior art, when defrosting is required on the outdoor side, the four-way valve is reversed to defrost, and the high-temperature refrigerant flows through the outdoor heat exchanger for defrosting. High frost frequency leads to high defrosting frequency, which leads to ...

Claims

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Application Information

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IPC IPC(8): F25B13/00F25B41/20F25B47/02F25B49/02
CPCF25B13/00F25B47/02F25B49/02F25B2347/02
Inventor 冯文科郑丹平林裕亮曾庆和
Owner GREE ELECTRIC APPLIANCES INC
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