Bimetallic steam trap
AssigneeGestra GmbH
InventorHolm Klann
Life of this patent
Estimating the term…
Abstract
The bimetallic plates of the steam trap disclosed each comprise three same-direction active arms next to one another extending transversely to a center line. On the center line two active arms extend in opposite directions to one another and transversely to the other active arms. On the side of the bimetallic plates which curve concavely when deflected there are provided projections as support portions or faces for the active arms. The projections of at least two active arms project beyond those of the other active arms. The projections of the active arms come into effect at different temperatures and with accumulative force. The bimetallic plates therefore have a closing force line closely adapted to the saturated steam curve.
Claims15
A bimetallic steam trap comprising
- (a) a valve seat;
- (b) a closure member cooperating with said valve seat and biased in an opening direction at a preliminary pressure;
- and
- (c) a control element arranged on the preliminary pressure side of said steam trap acting on said closure member to close said valve at elevated temperatures, said control element comprising at least two superimposed bimetallic plates which deflect when the temperature rises to apply a closing force on said closure member, said plates being slotted to form a plurality of active arms, each of said active arms having a support portion on the concavely curved side of the bimetallic plates when deflected for supporting the ends of the active arms, said support portions of at least two active arms being offset in height relative to the support portions of the other active arms such that the ends of the active arms are supported at different temperatures and the closing force applied by said bimetallic plates is adapted to a predetermined pressure-temperature curve.
A bimetallic steam trap comprising
- (a) a valve seat;
- (b) a closure member cooperating with said valve seat and biased in an opening direction at a preliminary pressure;
- and
- (c) a control element arranged on the preliminary pressure side of said steam trap acting on said closure member to close said valve at elevated temperatures, said control element at least two superimposed bimetallic plates which deflect when the temperature rises to apply a closing force on said closure member, said plates being slotted to form a plurality of active arms, each of said active arms having ends identical in height, and inserts on the concavely curved side of the bimetallic plates when deflected, the bimetallic plates and the inserts being arranged so as to be non-rotatable relative to each other, each insert comprising a support portion for supporting the ends of the active arms, said support portions of the inserts for at least two active arms being offset in height relative to the support portions of the inserts for the other active arms such that the ends of the active arms are supported at different temperatures and the closing force applied by said bimetallic plates is adapted to a predetermined pressure-temperature curve.
Dependencies are inferred from the claim text.