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21. 发明公开

EP4446629A1 FLOW PATH SWITCHING VALVE AND AIR CONDITIONER SYSTEM 审中-实审
公开(公告)号：EP4446629A1
公开(公告)日：2024-10-16
申请号：EP22903608.2
申请日：2022-12-09
申请人： Zhejiang Dunan Artificial Environment Co., Ltd.
发明人： XUAN, Yongbin , JIN, Huahai , ZHANG, Lian , SHOU, Zhouyang , TU, Liefeng
IPC分类号： F16K11/074 , F16K31/04 , F16K31/53
CPC分类号： F16K31/04 , F16K11/074 , F16K31/53
摘要： A flow path switching valve (100) and an air conditioner system (200) are provided. The flow path switching valve (100) includes a valve body (10) internally provided with a valve cavity (14). The valve body (10) is provided with a communication port (140) in communication with the valve cavity (14). The communication port (140) includes a first connecting port (11) and at least one switching path (13). The flow path switching valve (100) further includes a switching pipe (20). The switching pipe (20) includes a first end (21) and a second end (22). The first end (21) of the switching pipe (20) is rotatably connected to the valve body (10) and connected to the first connection port (11). The second end (22) of the switch pipe (20) is located in the valve cavity (14). The switching pipe (20) is capable of rotating to enable the second end (22) of the switching pipe (20) to be in communication with any one of the at least one switchable flow path (13).

22. 发明公开

EP4435305A1 PIPELINE CONNECTING STRUCTURE AND STOP VALVE 审中-实审
公开(公告)号：EP4435305A1
公开(公告)日：2024-09-25
申请号：EP22894981.4
申请日：2022-11-19
申请人： Zhejiang Dunan Artificial Environment Co., Ltd.
发明人： ZHOU, Feng , LOU, Feng , CHEN, Diyong , FENG, Guanghua , WANG, Bin
IPC分类号： F16L1/00 , F16L13/02
CPC分类号： F16L1/00 , F16L13/02
摘要： A pipeline connecting structure (100) and a stop valve (1000) are provided. The pipeline connecting structure (100) includes a connecting pipe body (10). A solder blocking portion (111) is provided on the connecting pipe body (10), and can block a solder from flowing on an inner wall (101) of the connecting pipe body (10), so as to limit the solder to flow out of an end of the connecting pipe body (10) along a flow direction of the solder.

23. 发明公开

EP4421361A1 VALVE HEAD STRUCTURE AND FLOW REGULATING VALVE HAVING SAME 审中-实审
公开(公告)号：EP4421361A1
公开(公告)日：2024-08-28
申请号：EP22882725.9
申请日：2022-10-12
申请人： Zhejiang Dunan Artificial Environment Co., Ltd.
发明人： HE, Yuchen , LIU, Leqiang , ZHU, Fangying
IPC分类号： F16K1/36 , F16K27/02
CPC分类号： F16K27/02 , F16K1/36
摘要： A valve head structure and a flow regulating valve with the valve head structure. The valve head structure is disposed in a valve body of the flow regulating valve for closing or avoiding a valve port of the valve body. The valve head structure includes: a valve head, which is movably disposed in the valve body; and an accommodating groove, which is formed in the valve head and is used for accommodating fluid in the valve body, wherein a distance between the valve head and the valve port is adjustable, and when the valve head moves to a position where the distance with the valve port is the maximum, at least part of the accommodating groove is located in an accommodating cavity of the valve body. The valve head structure of the present invention solves the problem that the settings of the valve head structure in a prior art have large flow resistance, thus affecting the flow of the fluid in the flow regulating valve.

24. 发明公开

EP4421360A1 VALVE NEEDLE COMPONENT, AND FLOW REGULATING VALVE HAVING SAME 审中-实审
公开(公告)号：EP4421360A1
公开(公告)日：2024-08-28
申请号：EP22882726.7
申请日：2022-10-12
申请人： Zhejiang Dunan Artificial Environment Co., Ltd.
发明人： HE, Yuchen , LIU, Leqiang , CHEN, Yonghao , XU, Guanjun
IPC分类号： F16K1/04 , F16K1/32 , F16K1/36
CPC分类号： Y02B30/70 , F16K1/32 , F16K1/04 , F16K1/36
摘要： Provided in the present invention are a valve needle component and a flow regulating valve. The valve needle component includes: a screw, wherein the screw comprises a first rod section, a second rod section and a third rod section which are connected in sequence, the outer diameter of the first rod section is greater than the outer diameter of the second rod section, and the outer diameter of the second rod section is greater than the outer diameter of the third rod section; a bearing sleeved on the second rod section; and a bushing sleeved on the third rod section, wherein the bushing is welded to the third rod section, and two end surfaces of an inner ring of the bearing respectively abut against an end surface of the first rod section and an end surface of the bushing. By means of the technical solution provided in the present invention, the problems of an inner retainer of a bearing being deformed due to relatively large stress on an inner ring of the bearing when the bearing is mounted on a valve needle component, and the bearing being stuck when the bearing rotates in the prior art are avoided, and the friction force when the bearing rotates is reduced, such that the product performance is improved.

25. 发明公开

EP4400341A1 COMBINED FOUR-WAY VALVE, AIR CONDITIONING SYSTEM, AND VEHICLE 审中-实审
公开(公告)号：EP4400341A1
公开(公告)日：2024-07-17
申请号：EP22863636.1
申请日：2022-09-02
申请人： Zhejiang Dunan Artificial Environment Co., Ltd.
发明人： JIN, Ju , WANG, Fugang , ZHANG, Wenrong , SONG, Zhiguo
IPC分类号： B60H1/00 , F25B41/20
CPC分类号： F25B41/20 , B60H1/00
摘要： Disclosed are a combined four-way valve, an air conditioning system, and a vehicle. The combined four-way valve includes a valve seat (10), a first control valve (30), a second control valve (40), a third control valve (50) and a fourth control valve (60), where the valve seat is internally provided with an input port (11), an output port (12), a first opening (13), a second opening (14), and a plurality of valve cavities which are arranged at intervals and are arranged corresponding to the control valves on a one-to-one correspondence manner; the plurality of valve cavities include a first valve cavity (21), a second valve cavity (22), a third valve cavity (23) and a fourth valve cavity (24); the valve cavities are in communication with one another by channels; the valve cavities are provided with inlets and outlets, and are in communication with flow channels in the valve seat; each control valve controls the inlet and the outlet of the corresponding valve cavity to be in communication with or be disconnected from each other; and flow paths can be switched by means of opening and closing actions of the different control valves. The four-way valve replaces a manner of using a sliding block in existing four-way valves, such that the problem that the sliding block is easy to move in a vibrating environment is avoided. The combined four-way valve has high stability, and can adapt to unstable working environments such as vehicles, therefore ensuring reliable operation.

26. 发明公开

EP4397892A1 ELECTRONIC EXPANSION VALVE 审中-实审
公开(公告)号：EP4397892A1
公开(公告)日：2024-07-10
申请号：EP22875204.4
申请日：2022-09-30
申请人： Zhejiang Dunan Artificial Environment Co., Ltd.
发明人： HE, Yuchen , XU, Guanjun , CHEN, Yonghao , ZHAO, Jun , HUANG, Hongfeng , LIU, Tonghui , HE, Qiubo
IPC分类号： F16K1/36 , F16K1/32
CPC分类号： F16K1/32 , F16K1/36
摘要： The present invention provides an electronic expansion valve, which includes: a valve body having an accommodating cavity and a valve port, and the valve port communicates with the accommodating cavity; a guide sleeve, which is disposed in the accommodating cavity; a valve head, which is movably disposed in the guide sleeve and configured for blocking or opening the valve port, and a balance channel is disposed in the valve head so as to enable two ends of the valve head to be communicated; the valve head has a first end and a second end which are oppositely disposed, the first end is configured for blocking the valve port, a refrigerant medium and the first end have a first stress area S1, the refrigerant medium and the second end have a second stress area S2, and -1.3 mm2≤S1-S2≤1.3 mm2. Through the technical solution provided by the present invention, the problem that the reliability of action of an electronic expansion valve in the relevant art is poor may be solved.

27. 发明公开

EP4394226A1 ELECTRONIC EXPANSION VALVE 审中-实审
公开(公告)号：EP4394226A1
公开(公告)日：2024-07-03
申请号：EP22875205.1
申请日：2022-09-30
申请人： Zhejiang Dunan Artificial Environment Co., Ltd.
发明人： HE, Yuchen , XU, Guanjun , CHEN, Yonghao , HUANG, Hongfeng
IPC分类号： F16K31/04 , F16K1/36
CPC分类号： F16K31/04 , F16K1/36
摘要： An electronic expansion valve, including a valve body, the valve body having an accommodating cavity and a valve port, and the accommodating cavity being in communication with the valve port; a rotor, the rotor being arranged in the accommodating cavity; a stator assembly, the stator assembly being arranged outside the valve body in a sleeving manner, and the stator assembly being arranged corresponding to the rotor; a screw rod assembly, the screw rod assembly being arranged in the accommodating cavity, the screw rod assembly including a screw rod and a nut sleeve, the nut sleeve being fixed to the valve body, the screw rod being arranged in the nut sleeve in a penetrating manner and being in threaded connection with the nut sleeve, the rotor being fixedly connected to an end of the screw rod away from the valve port; and a valve sleeve, the screw rod being in driving connection with the valve sleeve, and the valve sleeve being used to block or open the valve port, where when the valve port is in a fully open state, the number of pulses is A, and when a central line of the stator assembly that is perpendicular to an axis coincides with a central line of the rotor that is perpendicular to the axis, the corresponding number of pulses is B, where 0.3 * A ≤ B ≤ 0.7 * A. By adopting the present solution, the problem that a driving force of the electronic expansion valve is relatively weak is solved.

28. 发明公开

EP4382786A1 VALVE NEEDLE AND ELECTRONIC EXPANSION VALVE HAVING SAME 审中-实审
公开(公告)号：EP4382786A1
公开(公告)日：2024-06-12
申请号：EP22863544.7
申请日：2022-08-31
申请人： Zhejiang Dunan Artificial Environment Co., Ltd.
发明人： HE, Yuchen , CHEN, Yonghao , XU, Guanjun
IPC分类号： F16K31/02 , F16K1/38 , F16K27/02
CPC分类号： Y02B30/70 , F16K31/02 , F16K1/32 , F16K27/02 , F16K1/38
摘要： Disclosed are a valve needle and an electronic expansion valve having the valve needle. The valve needle (10) is provided with a connecting end (11) and a blocking end (12) that are arranged opposite to each other; the blocking end includes a blocking segment (121), a first opening segment (122), and a second opening segment (123) that are sequentially connected in an axial direction; the blocking segment cooperates with a valve port (21) to block the valve port; a cross sectional area of the blocking segment close to the connecting end is greater than a cross sectional area of the blocking segment distant from the connecting end; a cross sectional area of the second opening segment close to the connecting end is greater than a cross sectional area of the second opening segment distant from the connecting end; the cross sectional area of the blocking segment distant from the connecting end is greater than the cross sectional area of the second opening segment close to the connecting end; and a cross sectional area of the first opening segment remains unchanged. The electronic expansion valve may solve the problem in the related art that a flow rate of a refrigerant cannot be accurately controlled when the electronic expansion valve remains a small opening.

29. 发明公开

EP4372232A1 ELECTRONIC WATER PUMP 审中-实审
公开(公告)号：EP4372232A1
公开(公告)日：2024-05-22
申请号：EP22841378.7
申请日：2022-07-12
申请人： Zhejiang Dunan Artificial Environment Co., Ltd.
发明人： ZHOU, Xiaowei , WANG, Junjie
IPC分类号： F04D29/24 , F04D13/06
CPC分类号： F04D29/24 , F04D29/62 , F04D13/06 , F04D29/00
摘要： An electronic water pump, including: a pump head (10), a pump housing (20), an isolation sleeve (30), an impeller assembly (40), a first gasket (50), and a rotation stopping structure, wherein a mounting portion (11) is disposed on the pump head (10); the pump head (10) is used for sealing the pump housing(20); the isolation sleeve (30) is disposed between the pump head (10) and the pump housing (20); the impeller assembly (40) is disposed between the pump head (10) and the isolation sleeve (30); and the first gasket (50) is disposed at an end of the mounting portion (11) that is close to the impeller assembly (40), and the first gasket (50) is used for isolating the mounting portion (11) from the impeller assembly (40). The apparatus may avoid relatively large noise.

30. 发明公开

EP4361474A1 DRIVER AND CONTROL VALVE 审中-实审
公开(公告)号：EP4361474A1
公开(公告)日：2024-05-01
申请号：EP22827685.3
申请日：2022-06-24
申请人： Zhejiang Dunan Artificial Environment Co., Ltd.
发明人： FENG, Zhongbo , WANG, Junjie , WANG, Fugang , SHA, Haijian
IPC分类号： F16K11/085 , F16K11/22 , F16K27/06 , F16K31/04 , F16K31/53 , F16K41/02
CPC分类号： F16K41/02 , F16K31/04 , F16K11/22 , F16K11/085 , F16K31/53 , F16K27/06
摘要： A driver (60) and a control valve (1000) are provided. The control valve (1000) includes a valve body (1), a first valve core (2) and a second valve core (3). The valve body (1) provided with a valve cavity (11). A side wall of the valve body (1) is provided with a plurality of communicating holes (121), and the communicating hole (121) penetrates through the side wall of the valve body (1) and is in communicate with the valve cavity (11). The first valve core (2) is rotatably disposed at one end of the valve cavity (11), the first valve core (2 is provided with a plurality of first passages (21) and a plurality of second passages (22) on a circumferential side of the first valve core (2). The second valve core (3) is rotatably disposed at the other end of the valve cavity (11), and the second valve core (3) is coaxially disposed with the first valve core (2), and the second valve core (3) is coaxially disposed with the first valve core (2).

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