US 9,810,461 B2
Electronic expansion valve
Caiyi Zhan, Zhejiang Province (CN); Ze Yuan, Zhejiang Province (CN); and Xianrang Wei, Zhejiang Province (CN)
Assigned to Zhejiang Sanhua Intelligent Controls Co., Ltd., Shaoxing, Zhejiang (CN)
Appl. No. 14/408,284
Filed by Caiyi Zhan, Zhejiang Province (CN); Ze Yuan, Zhejiang Province (CN); and Xianrang Wei, Zhejiang Province (CN)
PCT Filed Aug. 10, 2012, PCT No. PCT/CN2012/079936
§ 371(c)(1), (2), (4) Date Dec. 15, 2014,
PCT Pub. No. WO2013/189120, PCT Pub. Date Dec. 27, 2013.
Claims priority of application No. 2012 1 0208265 (CN), filed on Jun. 20, 2012.
Prior Publication US 2015/0114495 A1, Apr. 30, 2015
Int. Cl. F15B 13/04 (2006.01); F25B 41/06 (2006.01); F16K 15/18 (2006.01)
CPC F25B 41/062 (2013.01) [F16K 15/18 (2013.01); F25B 2341/06 (2013.01); F25B 2341/065 (2013.01); F25B 2400/0411 (2013.01); Y02B 30/72 (2013.01); Y10T 137/87177 (2015.04)] 19 Claims
OG exemplary drawing
 
1. An electronic expansion valve, comprising a valve seat, the valve seat being provided with a valve cavity, a valve core seat being fixed in the valve cavity, and the valve core seat being provided with a valve core valve port and a bypass through hole; the electronic expansion valve further comprising a valve needle component which is movable in an axial direction to cooperate with the valve core valve port and a piston component which is movable in the axial direction to open and close the bypass through hole; and the electronic expansion valve further comprising a transverse connecting pipe functioning as an inlet connecting pipe and a vertical connecting pipe functioning as an outlet connecting pipe, the transverse connecting pipe and the vertical connecting pipe are installed on the valve seat; wherein,
the piston component and the valve needle component are located at a same side of the valve core seat, and in a case that refrigerant flows forwards, the piston component closes the bypass through hole, the refrigerant flows to a side of the vertical connecting pipe via the valve core valve port, and the valve needle component moves in the axial direction to regulate an opening of the valve core valve port; and in a case that the refrigerant flows reversely, the piston component moves upwards in the axial direction to open the bypass through hole, and the refrigerant flows to a side of the transverse connecting pipe via the bypass through hole.