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A sensor assembly for boiling water dispenser includes clamping
members for mounting a sensor such as a thermister in position to
sense the presence and absence of steam.
A spout assembly for a hot water dispenser having a valve body
including an outlet and a sealed valve assembly for controlling
liquid flow within the valve body. A liquid conduit is connected
to the outlet. A spout cover is removably disposed over the valve
body and the liquid conduit such that the spout cover may be removed
from the valve body without disturbing the seal of the valve assembly.
A boiling water dispenser includes a hot water reservoir, a user-actuated
faucet for drawing boiling water from a discharge zone at the top
of the reservoir, and a solenoid-actuated valve for admitting unheated
water to an inlet zone at the bottom of the reservoir. An electric
resistance heating element within the reservoir is supplied with
AC current through a series- connected bilateral switch device which
is periodically switched on and off in response to the sensing of
steam in a reservoir venting conduit to maintain the dispensing
temperature at the boiling point. An indicator lamp conditioned
by a sensor in the reservoir confirms to the user that the dispensing
temperature is at the boiling point.
A hot water dispenser includes a hot water reservoir, a user-actuated
faucet for drawing hot water from an outlet zone near the top of
the reservoir, and a solenoid-actuated valve for admitting unheated
water to an inlet zone at the bottom of the reservoir. An inline
flow regulator establishes an inlet flow rate less than the faucet
flow rate to maximize the volume of hot water available at the faucet.
An electric resistance heating element within the reservoir is supplied
with AC current through a series-connected bilateral switch device
which is periodically switched on and off in accordance with the
temperature of water sensed by a sensor at the faucet to maintain
a constant dispensing temperature. The switch device is thermally
coupled to the bottom of the reservoir such that the reservoir acts
as a heat sink to dissipate heat generated during switching. An
indicator lamp conditioned by the sensor confirms to the user that
the dispensing temperature is within a predetermined range.
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