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公开(公告)号：EP4446627A1
公开(公告)日：2024-10-16
申请号：EP22923046.1
申请日：2022-03-04
发明人： CHEN, Chao , ZENG, Qingjun , YANG, Mao
IPC分类号： F16K1/32 , F16K1/02 , F16K27/02 , F25B41/345
摘要： An electronic expansion valve and a refrigeration equipment, the electronic expansion valve includes a valve housing (100), a nut (200), a valve stem (300), a guide collar (400) and a valve needle (500). The valve housing (100) is provided with a valve chamber (103) and a valve port (104) communicating with the valve chamber (103). The nut (200) is provided in the valve chamber (103). The valve stem (300) is provided in an inner cavity of the nut (200) and threadedly connected to the nut (200). The guide collar (400) is provided in the valve chamber (103) and provided at a side of the nut (200) close to the valve port (104). The valve needle (500) is inserted into the valve port (104) after passing through the guide collar (400); driven by the valve stem (300), the valve needle (500) is configured to move axially relative to the valve port (104) under guidance of the guide collar (400), thereby opening or closing the valve port (104). Therefore, the coaxiality between the valve needle and the valve port is guaranteed.
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公开(公告)号：EP4242499A1
公开(公告)日：2023-09-13
申请号：EP21905196.8
申请日：2021-09-26
发明人： YANG, Mao , HUANG, Longhua , CHEN, Chao , JIANG, Bo
摘要： Disclosed are a valve needle assembly, an electronic expansion valve, and a refrigeration device. The valve needle assembly includes a valve needle sleeve (120), a valve rod (110), a valve needle (150), a buffer slider (140) and a buffer spring (130); the valve needle sleeve (120) has a first open end (121) and a second open end (123) opposite to each other; the valve rod (110) has a driving end, and the driving end of the valve rod (110) is movably matched with the valve needle sleeve (120) through the first open end (121) to drive the valve needle (150); the valve needle (150) is installed on the second open end (123) of the valve needle sleeve (120); the buffer slider (140) is provided in the valve needle sleeve (120), and the buffer slider (140) abuts against the valve needle (150); the buffer spring (130) is provided in the valve needle sleeve (120), and the driving end of the valve rod (110) is connected with the buffer slider (140) through the buffer spring (130).
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公开(公告)号：EP4459161A1
公开(公告)日：2024-11-06
申请号：EP22923043.8
申请日：2022-03-04
发明人： CHEN, Chao , ZENG, Qingjun , YANG, Mao
摘要： A valve needle assembly, an electronic expansion valve, and a refrigeration device. The valve needle assembly includes a valve needle (500), a bearing (600), and a valve rod (300). The valve needle (300) has a first end (501) and a second end (502) opposite to each other. The first end (501) is detachably mounted on a valve port (104) of the electronic expansion valve. The bearing (600) is fixedly mounted at the second end (502) by an outer ring. The valve rod (300) is inserted into an inner ring of the bearing (600). The technical solution aims to solve the technical problem in the related art that a valve needle is prone to abrasion due to the fact that the valve needle rotates relative to a valve port.
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公开(公告)号：EP4242498A1
公开(公告)日：2023-09-13
申请号：EP21905195.0
申请日：2021-09-26
发明人： HUANG, Longhua , CHEN, Chao , YANG, Mao , JIANG, Bo
摘要： Disclosed are an electronic expansion valve and a refrigeration device. The electronic expansion valve includes a valve seat (110), a nut (210) and a connection piece (220). The valve seat (110) is provided with a valve cavity (101), one end of the nut (210) is installed in the valve cavity (101), an outer wall of the nut is (210) protruded with an annular position part (211), and the position part (211) is positioned in contact with a wall of the valve cavity (110). One end of the connection piece (220) is fixedly connected to the nut (210), another end of the connection piece (220) is extended away from the nut (210), and is fixedly connected to an axial end surface of the valve seat (110).
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