Heat pump air conditioner system and control method thereof

An air-conditioning system, heat pump air-conditioning technology, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., to achieve the effect of improving heating operation efficiency, prolonging defrosting time, and reducing fluctuations in room temperature

Pending Publication Date: 2020-04-28
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the present invention provides a heat pump air-conditioning system and its control method to solve at least one of the following problems: reduce t

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  • Heat pump air conditioner system and control method thereof
  • Heat pump air conditioner system and control method thereof
  • Heat pump air conditioner system and control method thereof

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Embodiment Construction

[0037] 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.

[0038] 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 heat pump air conditioner system and a control method thereof. When the air conditioner system runs in a heating mode, to prevent an outdoor heat exchanger from being frosted,the heat pump system achieves defrosting running through reversing of a four-way valve. During defrosting running, to guarantee indoor comfort, indoor heat supply is guaranteed in the manner of additionally mounting electric heaters. In the heating defrosting process of the air conditioner system, room temperature fluctuation caused by defrosting in the heating process is reduced by controlling switches of a first evaporator, a second evaporator, the first electric heater, the second electric heater, a first evaporation fan and a second evaporation fan, meanwhile, the defrosting time can be prolonged, defrosting of an outdoor unit is achieved more thoroughly, the situation that after the system enters the heating mode again, the heat exchange effect is influenced due to the fact that theoutdoor unit is frosted is avoided, and the heating running efficiency is improved. Thus, the room temperature reduction amplitude in the heating defrosting process is reduced, defrosting of the outdoor unit is achieved thoroughly and reliably, and the heating running efficiency is improved.

Description

technical field [0001] The present invention relates to a heat pump air conditioning system and its control method, in particular to a vehicle heat pump air conditioning system and its control method. Background technique [0002] When the traditional heat pump air conditioner is in the heating state, because the outdoor unit is in a low-temperature environment, it is easy to frost, which seriously deteriorates the performance of the outdoor unit heat exchanger, resulting in poor indoor heating effect and low energy efficiency. Therefore, in the heating state, the system needs to periodically defrost the outdoor unit according to certain judgment conditions. will get longer. Because the defrosting process of the heat pump air conditioner uses the cooling mode to send high-temperature and high-pressure gas to the outdoor unit, so the temperature of the indoor unit pipe is relatively low at this time. temperature drop. Especially for rail air conditioners, the required heat...

Claims

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Application Information

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IPC IPC(8): F25B47/02
CPCF25B47/02B60H1/321
Inventor 陈鹏熙
Owner GREE ELECTRIC APPLIANCES INC
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