Coolant regulator having a shaft seal

US11808355B2 · kind B2 · utility

Assignee

• Schaeffler Technologies AG & Co. KG · DE

Inventors

• Huilan Zhou · 浮桥镇, CN
• Thomas Traudt · Pegnitz, DE

Key dates

• Filing date: Sep 3, 2020
• Grant date: Nov 7, 2023
• Expiry date: Sep 11, 2040

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16K27/00
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A coolant regulator is provided including a housing having a coolant chamber and a rotary vane arranged therein, a drive shaft leading out of the coolant chamber that rotates the rotary vane, and a shaft seal which seals the coolant chamber from the surroundings. The shaft seal seals against a housing inner lateral surface of a housing recess and sealingly encloses the drive shaft. An end portion of the shaft seal facing the rotary vane is a circular ring that, under elastic deformation of the bead thereof, seals against the housing inner lateral surface on the outer circumference and encompasses a spreading ring on the inner circumference that limits an axial shift of the shaft seal toward the rotary vane to a dimension d<s. s is the axial distance between the bead center of the undisplaced shaft seal and the opening of the housing recess facing the rotary vane.