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公开(公告)号：EP4328510A1
公开(公告)日：2024-02-28
申请号：EP22862604.0
申请日：2022-03-25
申请人： GD Midea Heating & Ventilating Equipment Co., Ltd. , HEFEI MIDEA HEATING & VENTILATING EQUIPMENT CO., LTD.
发明人： MA, Xihua , WANG, Mingren , WANG, Xinli , LIANG, Xin , HUANG, Jinyuan
IPC分类号： F24F11/42 , F24F11/41 , F24F11/65 , F24F11/79 , F24F110/10
摘要： The present disclosure relates to the technical field of multi-split control, and provides a defrost control method for a multi-split system, and the system. The method comprises: under the condition that the multi-split system satisfies a defrost condition, determining whether the heat absorption and defrosting capability of a started and operated refrigeration indoor unit is greater than or equal to a preset value; and under the condition that the heat absorption and defrosting capability of the started and operated refrigeration indoor unit is greater than or equal to a preset value, controlling an outdoor unit heat exchanger to be switched from an evaporator to a condenser, so that a refrigerant recovers the heat absorbed by the refrigeration indoor unit, provides the heat for the outdoor unit heat exchanger for defrosting, and provides the heat for a heating indoor unit heat exchanger for heating. Therefore, during the defrosting of an outdoor unit, the heating indoor unit heat exchanger serves as a condenser, so that a large temperature fluctuation of a heated room where the heating indoor unit is located can be avoided, and the multi-split system can perform defrosting on the outdoor unit heat exchanger on the basis that there is no large temperature fluctuation of the heated room where the heating indoor unit is located.
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公开(公告)号：EP4293294A1
公开(公告)日：2023-12-20
申请号：EP21931171.9
申请日：2021-09-18
申请人： GD Midea Heating & Ventilating Equipment Co., Ltd. , HEFEI MIDEA HEATING & VENTILATING EQUIPMENT CO., LTD.
发明人： WANG, Xinli , MA, Xihua , WANG, Mingren
摘要： Disclosed are a method and device for controlling an air conditioner. The air conditioner comprises an outdoor heat exchanger, an indoor heat exchanger, a heat storage heat exchanger, a compressor, a four-way valve assembly, and a throttling assembly, wherein the outdoor heat exchanger is connected to the indoor heat exchanger by means of a first pipeline and a bypass, the outdoor heat exchanger is connected to the compressor by means of a second pipeline, the indoor heat exchanger is connected to the compressor by means of a third pipeline, the heat storage heat exchanger is arranged on the bypass, the throttling assembly is arranged on the bypass, the four-way valve assembly comprises a first four-way valve and a second four-way valve, the first four-way valve is arranged on the second pipeline, and the second four-way valve is arranged on the third pipeline. The method comprises: identifying an operation mode of the air conditioner; if the operation mode is a heating mode, controlling the first four-way valve and the second four-way valve to be powered on; and if the operation mode is a defrosting mode, controlling the first four-way valve to be powered off and the second four-way valve to be powered on. Heat is absorbed from the heat storage heat exchanger for defrosting of the outdoor heat exchanger, thereby improving the comfort level of the air conditioner and user experience.
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公开(公告)号：EP4167694A1
公开(公告)日：2023-04-19
申请号：EP21860452.8
申请日：2021-08-25
发明人： ZHANG, Tiegang , WANG, Mingren , LI, Hongwei , WANG, Guochun , TAN, Zhijun , LUO, Weihong , MA, Xihua , LI, Zhaohui
摘要： The present application discloses an air conditioning apparatus and an electric control box. The electric control box comprises a box body, a mounting plate, a heat sink, an electronic component and a heat dissipation fan. The box body is provided with a mounting cavity. The mounting board is arranged in the mounting cavity to form a first chamber and a second chamber located on two sides of the mounting board. A first air vent and a second air vent are arranged on the mounting board and are spaced apart. The first air vent and the second air vent are connected to the first chamber and the second chamber. The heat sink is at least partially arranged in the first chamber. The electronic component is arranged in the second chamber and in thermally conductive connection with the heat sink. The heat dissipation fan is used for blowing air such that the air flows from the first chamber into the second chamber via the first air vent. In this way, air circulation is formed between the first chamber and the second chamber to cool the sealed electric control box. Moreover, the electric control box is sealed and is thus water proof, insect proof, dust proof and damp proof, thereby having higher electric control reliability.
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4.发明公开REFRIGERANT CONTROL METHOD FOR MULTI-SPLIT MACHINE CONNECTED IN SERIES 审中-公开瑞士GESCHALTETE MULTISPLIT-MASCHINE的KÄLTEMITTELREGELUNGSVERFAHRENFÜR
公开(公告)号：EP3150942A1
公开(公告)日：2017-04-05
申请号：EP15874888.9
申请日：2015-08-28
发明人： MA, Xihua , XU, Yongfeng , XIONG, Meibing , HU, Weilong
CPC分类号： F25B49/02 , F24F11/00 , F24F11/30 , F24F11/62 , F24F11/65 , F24F2110/10 , F24F2110/12 , F25B2313/0233 , F25B2313/0253 , F25B2313/0315
摘要： Disclosed is a refrigerant control method for a multi-split machine connected in series, comprising: S1: in a heating mode, comparing the superheat degree Tsh of each outdoor unit (12) with the average superheat degree Ta of multiple outdoor units (12); S2: if the superheat degree Tsh of the present outdoor unit (12) is too high relative to the average superheat degree Ta, increasing the refrigerant amount into the present outdoor unit (12); and S3: if the superheat degree Tsh of the present outdoor unit (12) is too low relative to the average superheat degree Ta, decreasing the refrigerant amount into the present outdoor unit (12). Therefore, the refrigerant amount into each outdoor unit (12) is determined by comparing the superheat degree Tsh of the present outdoor unit (12) with the average superheat degree Ta. The refrigerant amount into each outdoor unit (12) is adjusted from a systemic overall perspective, so that the compressor (122) can work in a good operation range, avoiding problems resulting from too high or insufficient superheat degree of the compressor (122), and the operation reliability of the multi-split machine is increased.
摘要翻译： 公开了一种串联连接的多分割机的制冷剂控制方法，包括：S1：在加热模式下，将各室外机组（12）的过热度Tsh与多台室外机组（12）的平均过热度Ta进行比较， ; S2：如果本室外机组12的过热度Tsh相对于平均过热度Ta太高，则将制冷剂量增加到本室外机组12。 和S3：如果本室外机组12的过热度Tsh相对于平均过热度Ta太低，则将制冷剂量降低到本室外机组12中。 因此，通过将本室外机（12）的过热度Tsh与平均过热度Ta进行比较来确定进入每个室外机组12的制冷剂量。 从全局整体的角度来调整各室外机组12中的制冷剂量，使得压缩机122能够在良好的运转范围内工作，避免由于压缩机122的过热度过高或不足导致的问题， 并且多分割机的操作可靠性增加。
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公开(公告)号：EP4130597A1
公开(公告)日：2023-02-08
申请号：EP20955051.6
申请日：2020-12-11
发明人： MA, Xihua , ZHUANG, Zibao , WANG, Mingren , TAN, Zhijun
摘要： Proposed by the present invention are an air conditioner, a control method and a computer-readable storage medium. The air conditioner comprises: a refrigerant switching device, an indoor heat exchanger, an outdoor heat exchanger, a compressor, a memory, and a processor. The refrigerant switching device comprises a liquid pipe, a gas pipe, and a valve assembly. The processor executes a computer program so as to execute the following: obtaining switching information of a working mode of the air conditioner; and controlling the valve assembly according to the switching information so that the gas pipe and the liquid pipe are closed according to the sequence of the gas pipe first and then the liquid pipe, and then opened according to the sequence of the gas pipe first and then the liquid pipe. Therefore, during the switching process of the working mode, the refrigerant inside an indoor unit heat exchanger is limited by means of first closing the gas pipe and the liquid pipe, which reduces the amount of refrigerant to be balanced after the gas pipe connected to a target working mode is connected, and reduces the refrigerant noise caused by the impact of high pressure and low pressure refrigerant during the connection process. At the same time, the refrigerant flow may be switched without limiting the refrigerant flow, which greatly shortens the duration of the switching process and ensures the operation stability of the compressor.
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公开(公告)号：EP4135496A1
公开(公告)日：2023-02-15
申请号：EP21860397.5
申请日：2021-08-24
发明人： WANG, Mingren , TAN, Zhijun , MA, Xihua
摘要： Provided are an air conditioning apparatus and an electric control box. The electric control box comprises a box body, a mounting board, an electronic component, and a heat sink, the box body being provided with a mounting cavity; the mounting plate is disposed in the mounting cavity such that the mounting cavity forms a first cavity and a second cavity located on the two sides of the mounting board; the electronic component is arranged in the second cavity; the heat sink comprises a heat exchange body and a header assembly; the header assembly is used for providing refrigerant flow to the heat exchange body; at least part of the heat exchange body is arranged in the first cavity, and is heat-conductively connected to the electronic component; the mounting board is used for blocking the condensed water on the heat sink from flowing into the second cavity. By means of arranging the mounting board in the electric control box to separate the mounting cavity, and arranging the heat exchange main body and the electronic components in the first cavity and the second cavity, respectively, which are independent of each other, it is possible to completely isolate the electronic component from the condensed water, and thus prevent the electronic component from short-circuiting or damage due to contact with the condensed water.
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公开(公告)号：EP4135495A1
公开(公告)日：2023-02-15
申请号：EP21860394.2
申请日：2021-08-24
发明人： WANG, Guochun , WANG, Mingren , ZHANG, Tiegang , LUO, Weihong , MA, Xihua , LI, Hongwei , LI, Zhaohui
摘要： Disclosed are an air conditioning device and an electric control box. The electric control box comprises a box body, a mounting plate, a radiator, an electronic component and a cooling fan; the box body is provided with a mounting chamber, the mounting plate is arranged in the mounting chamber such that the mounting chamber forms a first chamber and a second chamber which are located at two sides of the mounting plate, the mounting plate is provided with a first ventilation opening and a second ventilation opening which are spaced apart, the first ventilation opening and the second ventilation opening enables communication between the first chamber and the second chamber; the radiator is at least partially arranged in the first chamber; the electronic component is arranged in the second chamber and is in heat conducting connection with the radiator; and the cooling fan is used for supplying air, such that air in the first chamber flows into the second chamber through the first ventilation opening. By means of the described manner, a circulating air flow can be formed between the first chamber and the second chamber, so as to cool the sealed electric control box; in addition, by providing the sealed electric control box, the problems of water resistance, insect prevention, dust prevention, moisture prevention, etc. can be effectively solved, thereby improving the electric control reliability of the electric control box.
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