Heat pump air conditioner heat exchanger with variable flow path and control method thereof

Abstract

The invention provides a heat pump air-conditioning heat exchanger with a variable flow path, which includes a gas collection port (1), a liquid collection port (2) and a gas collection port (1) and the liquid collection port (2). There are three heat exchange flow paths between them, the three heat exchange flow paths are arranged in parallel with each other, and the heat exchanger also includes a control function for controlling at least one flow path of the three heat exchange flow paths to be turned on or off. A control valve system capable of switching between different flow paths. The heat pump air conditioner heat exchanger with a variable flow path of the present invention can effectively realize the switching of the flow path of the heat exchanger under different operating conditions of the unit, thereby increasing the heat transfer coefficient and further improving the heat transfer effect. The invention also relates to a control method of the air conditioner heat exchanger.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, and in particular relates to a heat pump air conditioner heat exchanger with a variable flow path and a control method thereof. Background technique [0002] For existing heat pump air-conditioning heat exchangers, the flow path of the heat exchanger is the same under various operating states of cooling, heating, and different operating frequencies, and a large number of studies have shown that cooling, heating, and different frequencies The optimal flow paths for indoor and outdoor heat exchangers are different. When the heat exchanger is used as a condenser, its pressure loss is small. At this time, we need to use fewer shunts to increase the refrigerant flow rate and increase the heat transfer coefficient; when the heat exchanger is used as an evaporator, when the unit is running at medium and high frequencies Compared with the influence of flow rate on heat transfer coefficient, the...

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Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the air conditioner heat exchanger in the prior art cannot change the flow path of the heat exchanger and increase the heat transfer coefficient according to the actual operating conditions, thereby providing a variable Flow path heat pump air conditioner heat exchanger and control method thereof

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