Heat recovery air-conditioning system and refrigerant flow control method
A refrigerant flow and air conditioning system technology, applied in the field of air conditioning, can solve problems affecting reliability, lack of refrigerant flow control methods, unstable system operation, etc., and achieve the effect of improving reliability and stability
Active Publication Date: 2021-05-28
GUANDONG GIWEE TECH CO LTD
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Problems solved by technology
[0003] However, there is no good way to control the refrigerant flow in the existing heat recovery air-conditioning system, that is to say, there is a lack of accurate and effective control method for the refrigerant flow of the heat recovery air-conditioning system, resulting in the failure of the system effect, or Unstable system operation, affecting reliability
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[0023] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples. It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs.
[0024] In the present invention, unless stated otherwise, the used orientation words such as "upper, lower, top, bottom" are usually for the directions shown in the drawings, or for the parts themselves in the vertical, In terms of vertical or gravitational direction; similarly, for the convenience of understanding and description, "inner and outer" refer to the inner and outer relative to the outline of each component itself, but the above orientation words are not u...
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A heat recovery air-conditioning system comprises a heat exchanger, a condenser, an indoor unit and a refrigerant flow path formed by connecting the heat exchanger, the condenser and the indoor unit, wherein a first electronic expansion valve, a second electronic expansion valve and a one-way valve only allowing a refrigerant to flow to the condenser and the indoor unit from one end of the heat exchanger are arranged in the refrigerant flow path. The system further comprises an acquisition unit and a control unit, wherein the acquisition unit is used for acquiring air conditioner operation parameters; and the control unit is used for controlling the opening degrees of the first electronic expansion valve and the second electronic expansion valve. According to the system, the indoor unit capacity requirement, the environment temperature and the compressor exhaust temperature can be acquired through the acquisition unit, the load of the indoor unit is further judged, then the refrigerant flow requirement is primarily judged according to different environment temperatures, the initial opening degrees of the first electronic expansion valve and the second electronic expansion valve are determined, and then the opening degree of the first electronic expansion valve is adjusted according to the different environment temperatures and the change of the exhaust temperature, so that the heat recovery function is achieved, and the reliability and stability of the heat recovery air-conditioning system are improved.
Description
technical field [0001] The invention belongs to the technical field of air conditioning, and in particular relates to a heat recovery air conditioning system and a refrigerant flow control method. Background technique [0002] At present, China's refrigeration and air-conditioning market has a bright future in the world market, and has become the focus of the global refrigeration and air-conditioning industry. After only more than ten years of development, China's industry has become the world's second largest consumer market and largest producer of refrigeration and air-conditioning equipment, and has made great progress in terms of products, varieties, quality and technical level. In the process of upgrading, energy saving and environmental protection will always be the theme of innovation. [0003] However, there is no good way to control the refrigerant flow in the existing heat recovery air-conditioning system, that is to say, there is a lack of accurate and effective ...
Claims
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IPC IPC(8): F24F12/00F24F11/64F24F11/84F24F110/10F24F140/20
CPCF24F12/00F24F11/64F24F11/84F24F2110/10F24F2140/20Y02B30/56
Inventor 李荣江杨焕弟
Owner GUANDONG GIWEE TECH CO LTD