Double-temperature air conditioning system and control method thereof

An air-conditioning system and a part of the technology are applied in the dual-temperature air-conditioning system and its control field, which can solve the problems of low energy efficiency of the system, and achieve the effect of improving the energy efficiency of the system and improving the heat exchange effect.
CN111998565APending Publication Date: 2020-11-27GREE ELECTRIC APPLIANCES INC OF ZHUHAI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
GREE ELECTRIC APPLIANCES INC OF ZHUHAI
Publication Date
2020-11-27

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Abstract

The invention provides a double-temperature air conditioning system and a control method thereof. The double-temperature air conditioning system comprises a compressor, an outdoor heat exchanger, an indoor heat exchanger, and an intermediate heat exchanger. The compressor comprises two air inlets and at least one air outlet. The outdoor heat exchanger is connected with the air outlets of the compressor. The indoor heat exchanger comprises a first heat exchanger and a second heat exchanger. The first heat exchanger is connected with the outdoor heat exchanger through a first branch circuit. A first throttling device is arranged on the first branch circuit. The first heat exchanger is connected with the first air inlet of the compressor. The second heat exchanger is connected with the secondport of the outdoor heat exchanger. A second throttling device is arranged on a second branch circuit. The second heat exchanger is connected with the second air inlet of the compressor. The first branch circuit and the second branch circuit are connected with the intermediate heat exchanger at the same time. The double-temperature air conditioning system and the control method thereof can improve the energy efficiency of the air conditioning system.
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Description

technical field

[0001] The invention relates to the technical field of air conditioning, in particular to a dual-temperature air conditioning system and a control method thereof. Background technique

[0002] The dual-temperature air-conditioning system sets two adjacent indoor heat exchangers indoors, and through the stepwise cooling and dehumidification or temperature-raising treatment of the indoor return air, the indoor heat exchangers of the air-conditioning system realize the heat exchange under cooling or heating conditions. The thermal gradient difference improves the heat exchange efficiency of the heat exchanger, thereby improving the overall energy efficiency of the air conditioning system.

[0003] However, the two subcooling degrees of the front and rear row heat exchangers of this system under the heating condition are lower than those of the conventional single-stage system under the heating condition, which leads to evaporation under the heating condition. T...

Claims

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