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公开(公告)号：US11512860B2
公开(公告)日：2022-11-29
申请号：US16546235
申请日：2019-08-20
发明人： Shaojiang Cheng , Jun Wang , Benhai Yuan , Bin Shi
摘要： Embodiments of the present disclosure provide a protection circuit and an air conditioner, which are applied to the field of air conditioner technologies and used to protect an indoor unit. The protection circuit provided by the embodiments of the present disclosure includes: a positive temperature coefficient thermistor; a signal input terminal; and a communication module; wherein a first end of the positive temperature coefficient thermistor is connected to the signal input terminal, and a second end of the positive temperature coefficient thermistor is connected to the communication module.
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公开(公告)号：US11320185B2
公开(公告)日：2022-05-03
申请号：US16631332
申请日：2018-06-21
发明人： Baitian Zhuo , Bin Shi , Shaojiang Cheng , Ruigang Zhang , Wanying Zhang
IPC分类号： F25B47/02 , F24F11/43 , F24F11/42 , F24F1/14 , F24F1/0007
摘要： A defrosting control method for a multi-split system is provided. A multi-split system comprises an outdoor unit and multiple indoor units. An expansion valve is provided on a connecting pipeline between each of the indoor units and the outdoor unit. When the expansion valve of each activated indoor unit is closed and the degree of opening of the expansion valve of each off-state indoor unit is less than or equal to a maximum set degree of opening, the system satisfies a defrosting requirement, and as a result the method controls the expansion valve of each activated indoor unit to remain closed, thereby resolving the issue of a dramatic temperature drop in a room having an activated indoor unit during defrosting and improving user satisfaction. The degree of opening of the expansion valve of a off-state indoor unit is Off_PLS, and is controlled such that Off_PLS=ALL_HP*Avg_PLS/Off_HP. The invention satisfies a defrosting requirement and reduces the degree of opening of the expansion valves as much as possible, thereby preventing damage to a compressor without affecting defrosting.
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公开(公告)号：US20210262690A1
公开(公告)日：2021-08-26
申请号：US16761476
申请日：2019-05-28
发明人： Jingsheng Liu , Qiang Song , Tao Ren , Qingliang Meng , Yinyin Li , Jiangbin Liu , Defang Guo , Xueyan Tan
摘要： The present application discloses a multi-split air conditioner and a control method thereof. The multi-split air conditioner includes a plurality of outdoor heat exchangers connected in parallel to a refrigerant main circulation passage, wherein a parallel branch in which each of the plurality of outdoor heat exchangers is located is provided with a branch control valve capable of controlling a flow rate of refrigerant flowing through the parallel branch. The control method includes: determining a current superheat degree of the multi-split air conditioner; when the current superheat degree of the multi-split air conditioner deviates from a set target superheat degree, controlling and regulating the flow rate of the refrigerant flowing through the branch control valve; and controlling and regulating the flow rate of the refrigerant flowing through the air supplement control valve according to the flow rate of the refrigerant flowing through each of branch control valves.
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54.发明申请公开(公告)号：US20210262688A1
公开(公告)日：2021-08-26
申请号：US17256308
申请日：2019-07-16
发明人： Tao REN , Qiang SONG , Yinyin LI , Jingsheng LIU , Bing WANG
IPC分类号： F24F11/63 , G05B19/042
摘要： A multi-split air-conditioning system, and a method for calculating a heat exchange capacity thereof. The method includes: acquiring a total heat exchange capacity of a multi-split air-conditioning system; acquiring a pressure difference between two pressure measurement points on each air pipe; acquiring the distance between the two pressure measurement points on each air pipe; acquiring the pipe diameter of each air pipe; acquiring the friction factor of each air pipe; acquiring the density of a heat exchange medium in each air pipe; and according to the total heat exchange capacity of the multi-split air-conditioning system, the pressure difference and distance between the two pressure measurement points on each air pipe, the pipe diameter and friction factor of each air pipe, and the density of the heat exchange medium in each air pipe, calculating a heat exchange capacity of each indoor unit.
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公开(公告)号：US20210180845A1
公开(公告)日：2021-06-17
申请号：US17256766
申请日：2019-12-26
发明人： Qingliang MENG , Qiang SONG , Jiangbin LIU , Jingsheng LIU
IPC分类号： F25B49/02 , F25B13/00 , F25B41/34 , F25B41/345
摘要： An air conditioning system, which includes an indoor heat exchanger, an outdoor heat exchanger, a compressor, a throttling device, a four-way valve and an ejection device; the indoor heat exchanger, the outdoor heat exchanger, the compressor and the throttling device form a closed-loop refrigerant circulation circuit, the four-way valve is configured to switch the air conditioning system between a cooling mode and a heating mode, and the ejection device is configured to be capable of being connected to a discharge side of the compressor when the air conditioning system executes the heating mode, so as to improve a heating effect of the air conditioning system. This system has a lower cost and a simple structure for easier maintenance, and the energy efficiency ratio is improved, so that the heating effect of the air conditioning system can be improved when the air conditioning system executes the heating mode.
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公开(公告)号：US20210126895A1
公开(公告)日：2021-04-29
申请号：US17042435
申请日：2019-01-21
发明人： Baitian ZHUO , Bin SHI , Shaojiang CHENG , Ruigang ZHANG , Jun WANG , Wenjun SHAO
摘要： An address competition method of a multi-connected type control system. The method aims at solving the problem of how to set an indoor machine communication address in the multi-connected type air conditioner system efficiently. For the purpose, a primary control device (such as an air conditioner outdoor machine) performs broadcasting on each address in a preset address section in sequence. A slave control device (such as the air conditioner indoor machine) responds to the primary control device on the basis of preset responding time and the number of currently broadcasting times of the primary control device. The primary control device to which a communication address is distributed temporarily is responded so as to finish address competition rapidly. Meanwhile, the primary control device can perform continuous broadcasting on one address for repeatedly, so that the competition success rate of the address is increased.
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57.发明公开公开(公告)号：US20240337407A1
公开(公告)日：2024-10-10
申请号：US18700026
申请日：2022-11-17
申请人： QINGDAO HAIER AIR-CONDITIONING ELECTRONIC CO., LTD , QINGDAO HAIER AIR CONDITIONER GENERAL CORP., LTD. , HAIER SMART HOME CO.,LTD
发明人： Donglai LIU , Yizhong YUAN , Dahai LU , Shoubo MAO
摘要： A multi-split air conditioner comprising an outdoor unit and a group of indoor units, the group of indoor units comprising a plurality of indoor units connected in parallel, at least one indoor unit comprising: a main flow path, comprising an electronic expansion valve and an indoor heat exchanger successively connected via a main pipeline, at least part of the main pipeline located at a refrigerant inlet end of the electronic expansion valve being used as a supercooling parallel section; a supercooling branch, comprising a supercooler, the supercooling branch being connected in parallel to the supercooling parallel section; and a communication switching assembly, configured to be controlled to communicate the supercooling parallel section and/or the supercooling branch with the electronic expansion valve.
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58.发明授权公开(公告)号：US12104817B2
公开(公告)日：2024-10-01
申请号：US17637260
申请日：2020-08-17
发明人： Baitian Zhuo , Bin Shi , Shaojiang Cheng , Ruigang Zhang , Jun Wang
IPC分类号： F24F11/65 , F24F11/84 , F24F110/10
CPC分类号： F24F11/65 , F24F11/84 , F24F2110/10
摘要： A control method for a multi-split air conditioning system capable of simultaneous cooling and heating to solve the problem that uneven cooling and heating occurs when running an existing multi-split air conditioning system. The method includes calculating the cooling or heating temperature effect deviation of each indoor unit on the basis of the indoor ambient temperature and set temperature of the environment where each indoor unit is located; calculating the total cooling effect deviation and total heating effect deviation of an multi-split air conditioning system on the basis of the horsepower of all the indoor units and the corresponding cooling temperature deviation or heating temperature deviation; and selectively adjusting the degrees of opening of valve boxes on the basis of the total cooling effect deviation and the total heating effect deviation. The method ensures balanced distribution of refrigerant, balanced running effects the units, and avoids uneven heating and cooling.
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59.发明授权公开(公告)号：US11892213B2
公开(公告)日：2024-02-06
申请号：US16970441
申请日：2019-12-24
发明人： Tao Ren , Qiang Song , Yinyin Li , Jingsheng Liu , Bing Wang
IPC分类号： F25B49/02
CPC分类号： F25B49/02 , F25B2313/0314 , F25B2500/19 , F25B2700/13
摘要： A multi-connection air conditioning system and a method for calculating a heat exchange amount thereof includes a plurality of indoor units, and the method includes: obtaining a total heat exchange amount of the multi-connection air conditioning system; obtaining inlet air temperature of each indoor unit; obtaining a two-phase saturation temperature of each indoor unit; obtaining an air supply volume of each indoor unit; obtaining a heat exchange area of each indoor unit; and calculating a heat exchange amount of each indoor unit according to the total heat exchange amount of the multi-connection air conditioning system, the inlet air temperature of each indoor unit, the two-phase saturation temperature of each indoor unit, the air supply volume of each indoor unit, and the heat exchange area of each indoor unit. Thus the user can monitor the heat exchange amount of each indoor unit so that they can be managed with separate targets.
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公开(公告)号：US11536495B2
公开(公告)日：2022-12-27
申请号：US16966876
申请日：2019-01-28
发明人： Defang Guo , Baitian Zhuo , Bin Shi , Shaojiang Cheng , Ruigang Zhang , Jun Wang
IPC分类号： F25B31/00 , F25B49/02 , F24F1/0003
摘要： An oil return control method for a multi-split air conditioner and a system accomplishing the same includes: calculating an average exhaust pressure within an oil return period Pd_AVG; determining whether the average exhaust pressure Pd_AVG≥the set threshold Pdthreshold; if Pd_AVG≥Pdthreshold, maintaining the multi-split air conditioner working in heating mode to ensure an acceptable oil return performance without affecting the air conditioning effect of indoor unit in heating mode; if Pd_AVG
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