Electronic expansion valve and refrigeration device
AssigneeGuangdong Welling Motor Manufacturing Co., Ltd.
InventorsLonghua Huang, Chao Chen, Mao Yang, Bo Jiang
Life of this patent
Estimating the term…
Abstract
An electronic expansion valve and a refrigeration device are provided. The electronic expansion valve has a valve seat, a nut and a connection piece. The valve seat is provided with a valve cavity. One end of the nut is installed in the valve cavity. An outer wall of the nut is provided with an annular position part that extends from the outer wall. The position part is positioned to be in contact with a wall of the valve cavity. One end of the connection piece is fixedly connected to the nut. Another end of the connection piece is extended away from the nut and fixedly connected to an axial end surface of the valve seat.
Claims13
An electronic expansion valve comprising:
- a valve seat forming a valve cavity and comprising a wall;
- a nut at least partially disposed within the valve cavity, the nut comprising:
- an outer wall;
- and
- a position portion protruding from the outer wall and contacting the wall of the valve seat, the position portion comprising:
- a connection portion in interference fit with the wall of the valve seat;
- and
- a tapered guide portion connected to the connection portion with a decreasing diameter away from the connection portion;
- a balance channel that communicates two sides of the position portion in an axial direction;
- a connection piece forming a balance hole that is in communication with the balance channel and communicates two sides of the connection piece in the axial direction, the connection piece comprising:
- an inner end fixedly connected to the nut;
- and
- an outer end away from the nut that is fixedly connected to an axial end surface of the wall of the valve seat;
- and
- a housing comprising a housing axial end surface in contact with the axial end surface of the wall of the valve seat,
- wherein:
- a thickness of the wall of the valve seat is greater than a thickness of the housing at an intersection of the wall of the valve seat and the housing;
- an outer surface of the wall of the valve seat and an outer surface of the housing are flush;
- the outer end of the connection piece is fixedly connected to a portion of the axial end surface of the wall of the valve seat that is not connected to the housing;
- and
- an annular gap is formed between the outer end of the connection piece and an inner wall of the housing.
Dependencies are inferred from the claim text.