Invention Grant
- Patent Title: Electric expansion valve
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Application No.: US17415510Application Date: 2019-12-16
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Publication No.: US12072039B2Publication Date: 2024-08-27
- Inventor: Sigurd Larsen , Kurt Harck , Søren Støttrup Kristensen , Birthe Nissen Reese , Charlotte Vibeke Pingel Vagnsholdt
- Applicant: Danfoss A/S
- Applicant Address: DK Nordborg
- Assignee: DANFOSS A/S
- Current Assignee: DANFOSS A/S
- Current Assignee Address: DK Nordborg
- Agency: McCormick, Paulding & Huber PLLC
- Priority: EP 214593 2018.12.20
- International Application: PCT/EP2019/085364 2019.12.16
- International Announcement: WO2020/127062A 2020.06.25
- Date entered country: 2021-06-17
- Main IPC: F16K31/50
- IPC: F16K31/50 ; F25B41/35

Abstract:
An electric expansion valve (1) including a valve housing (12), a valve seat (2), a valve element (3) cooperating with the valve seat (2), a drive driving the valve element (3) and including a rotary motor (4) having an axis (17) of rotation. The valve element (3) is connected to the motor (4) and has a possibility of radial displacement between the rotor (6) and the valve element (3) with respect to the axis (17) of rotation. Such an expansion valve should ensure a long lifetime with low production costs. To this end the valve element (3) is connected to the motor (4) by means of a fixing element (16) which guarantees a defined position of the valve element (3) in axial direction while allowing the radial displacement between the axis (17) of rotation and the valve element (3).
Information query