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US 8,573,250 B1Granted
Steam trap with integrated temperature sensors
AssigneeSpirax-Sarco Limited
InventorsBernard J. Radle, Robert Leslie Penfield
Life of this patent
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Abstract
A steam trap comprises a housing defining a flow passage extending between an inlet and an outlet. A cap fitted to the housing has a stop face. In addition, the housing and the cap define a trap chamber. A movable valve element is located in the trap chamber. The steam trap further comprises a first temperature sensor having an inlet sensing portion in the flow path between the inlet and valve element. A second temperature sensor has an outlet sensing portion in the flow path between the valve element and the outlet.
Claims16
A steam trap comprising:
- a housing defining a flow path extending between an inlet and an outlet, said inlet having a first internally threaded portion and a first smooth bore portion;
- a cap fitted to said housing and having a stop face, said housing and said cap defining a trap chamber;
- a movable valve element located in said trap chamber;
- and
- a first temperature sensor having an attachment portion and an inlet sensing portion, said attachment portion being attached to said housing and said inlet sensing portion extending from said attachment portion past a centerline axis of said inlet so that an end of said inlet sensing portion is past said centerline axis of said inlet and in said flow path between said inlet and said movable valve element;
- and
- a second temperature sensor having an attachment portion and an outlet sensing portion in said flow path between said movable valve element and said outlet.
4 more elements
A steam trap comprising:
- a housing defining a flow path extending between an inlet and an outlet, said inlet having a first internally threaded portion and a first smooth bore portion;
- a movable valve element operative to selectively allow flow between said inlet and said outlet;
- a first sensing port located at said inlet of said housing and extending transverse to a flow direction at said inlet, said first sensing port having a first internally threaded portion;
- a second sensing port located at said outlet of said housing and extending transverse to a flow direction at said outlet, said second sensing port having a second internally threaded portion;
- a first temperature sensor having an engagement portion located in said first sensing port and having an inlet sensing portion extending from said attachment portion past a centerline axis of said inlet so that an end of said inlet sensing portion is past said centerline axis of said inlet and in said flow path;
- and
- a second temperature sensor having an engagement portion located in said second sensing port and having an outlet sensing portion in said flow path.
4 more elements
A steam trap comprising:
- a housing comprising a body portion and a separate connector portion together defining a flow path extending between an inlet and an outlet each located at said connector portion, said inlet having a first internally threaded portion and a first smooth bore portion;
- a movable valve element operative to selectively allow flow between said inlet and said outlet;
- a first temperature sensor having an attachment portion and an inlet sensing portion, said attachment portion being attached to said housing and said inlet sensing portion extending from said attachment portion past a centerline axis of said inlet so that an end of said inlet sensing portion is past said centerline axis of said inlet and in said flow path between said inlet and said movable valve element;
- and
- a second temperature sensor having an attachment portion and an outlet sensing portion in said flow path between said movable valve element and said outlet.
2 more elements
Dependencies are inferred from the claim text.