| 摘要 |
An apparatus for heating and controlling the flow rate of a fluid which includes a fluid inlet, a chamber communicating therewith, an outlet operatively associated with the chamber and an electric resistance heating element within the chamber provided with appropriate controls so as to selectively and in a controlled manner heat the fluid passing therethrough. A control knob is associated with the device. Respective movements of the control knob control respectively the flow rate and the heating current to the heating element so that a single knob provides either heated or unheated fluid at an outlet. The electrical input to the heating element is controlled by a thermostat, which includes a bimetallic strip. A linkage may be moved by the control knob to, in effect, prevent the bimetallic strip from assuming its circuit-closing orientation even when the temperature of the fluid is low.
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