Patent · US Active

Expansion valve

US11473691B2 · kind B2 · utility

1Cited by

3References

14Claims

0Family size

Assignee

ECO Holding 1 GmbH · DE

Inventors

Sven Dehrmann · Buchau, DE
Adrian Eslava Orradre · Stuttgart, DE
Daniel Reimann · Braunschweig, DE
Toni Schneider · Eßlingen, DE

Key dates

Filing date	Nov 29, 2020
Grant date	Oct 18, 2022
Priority date	—
Expiry date	Nov 29, 2040

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02B30/70
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

An expansion valve operable by a stepper motor, the expansion valve including a housing; a hollow shaft arranged in the housing; a valve base that supports the hollow shaft and closes the housing; a rotor that is drivable by a stator of the stepper motor; a center spool arranged within the hollow shaft and drivable by the rotor so that a rotation of the center spool is transferrable by a threaded connection into an axial movement of the center spool that opens or closes the expansion valve; and a spiral body that includes a thread turn and that is arranged about an enveloping surface of the hollow shaft and that is drivable by the rotor, wherein a stop body is arranged at the hollow shaft and movable in the thread turn of the spiral body.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.