Resettable thermal pressure relief device
AssigneeGM Global Technology Operations LLC
InventorRainer Pechtold
Life of this patent
Estimating the term…
Abstract
A resettable thermal pressure relief device (TPRD) is disclosed. The TPRD includes a piston, a housing adapted to receive the piston and allow movement between an open and a closed position. The housing includes an actuator having a temperature sensitive material disposed therein. The temperature sensitive material volumetrically expands, increasing a length of the actuator and forcing a lever from a first position to a second position. The piston is held in the closed position by the lever in the first position. When the lever moves to the second position, the piston is allowed to move to the open position, allowing a fluid to flow through the TPRD from a high pressure vessel in communication therewith.
Claims14
A resettable thermal pressure relief device (TPRD), comprising:
- a housing having a first aperture and a second aperture allowing a fluid to flow through the housing;
- a piston slidably mounted in the housing and movable between an open position and a closed position, the piston sealing the second aperture when the piston is in the closed position;
- a lever disposed in the housing and having a first position which selectively militates against the piston moving into the open position;
- an actuator having a temperature sensitive material adapted to expand volumetrically with an increase in temperature, wherein the actuator facilitates a movement of the lever from a first position to a second position when a desired temperature is attained to allow the piston to move to the open position;
- a lever spring adapted to bias the lever and one of militate against a movement of the lever from the first position and move the lever to the second position;
- and
- a guide coupled to the lever spring, wherein the lever further has a cavity that receives the guide and the lever spring and facilitates a linear movement of the lever along the guide when the lever is moved from the first position to the second position.
A resettable thermal pressure relief device (TPRD), comprising:
- a housing having a first aperture and a second aperture allowing a fluid to flow through the housing, the first aperture providing an access to reset the device after the fluid flow;
- a piston slidably mounted in the housing and movable between an open position and a closed position, the piston sealing the second aperture when the piston is in the closed position;
- a lever disposed in the housing and having a first position which selectively militates against the piston moving into the open position;
- a lever spring adapted to bias the lever and selectively militate against a movement of the lever from the first position;
- an actuator having a temperature sensitive material adapted to expand volumetrically with an increase in temperature, wherein the actuator moves the lever from a first position to a second position when a desired temperature is attained to allow the piston to move to the open position;
- and
- a guide coupled to the lever spring, wherein the lever further has a cavity that receives the guide and the lever spring and facilitates a linear movement of the lever along the guide when the lever is moved from the first position to the second position.
Dependencies are inferred from the claim text.