Dispensing – With heating or cooling means – Heating only
Patent
1995-10-25
1997-10-21
Derakshani, Philippe
Dispensing
With heating or cooling means
Heating only
222109, 222424, 222333, B67D 562
Patent
active
056787340
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to an instant hot water dispenser particularly, although not exclusively, an instant hot water dispenser for dispensing instant hot water for preparing hot drinks, for example tea or coffee.
Water generally suitable for preparing hot drinks is normally heated to boiling point by means of a kettle and often the person preparing a hot drink will have to wait until water in the kettle has boiled before the drink can be prepared. Therefore hot water is not instantly available with this type of system.
The present invention provides an instant hot water dispenser comprising a storage tank for containing a reservoir of hot water, heating means for maintaining the hot water at a predetermined temperature, a selectively operable discharge means associated with the tank having an outlet for connection with a remote discharge nozzle, the discharge means when operated being arranged to feed water from the reservoir through said outlet to the discharge nozzle, the dispenser being arranged to permit water to drain from the discharge nozzle into the reservoir when the discharge means is not operated, the discharge means being located relative to the tank such that water contained within the discharge means when not operated is maintained at said predetermined temperature, the tank being vented through an outlet port in an upper part thereof, and the outlet port communicating with a condenser.
Preferably the discharge means includes a submersible pump which communicates with said outlet.
Preferably said outlet is located above the level of the reservoir and is preferably connected to the submersible pump via a conduit which passes through the reservoir.
Preferably an inlet to the discharge means is located at a predetermined level above the bottom of the tank in order to define a lower level of the reservoir created by extraction of water by the discharge means.
Preferably the discharge means allow free-running of water through the discharge means thus enabling unused water to drain back into the tank from the discharge nozzle when the discharge means is not in operation.
United Kingdom Patent No. 1,191,848 discloses a water heater for a beverage dispensing machine. The water heater of this patent comprises a vessel containing water which is contained at a constant temperature. When hot water is required it is pumped through an outlet pipe which is arranged such that when the pump ceases to operate, the water in the outlet pipe will flow back to the vessel.
SUMMARY OF THE INVENTION
The condenser may sit on top of the tank or be incorporated within it. Conveniently, at least the top of the condenser is corrugated or otherwise formed to maximise the surface area thereof.
Preferably the heating means comprises an electric heating element located below the lower level of the reservoir.
Various aspects of the present invention will hereinafter be described with reference to the accompanying drawings, in which:
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic diagram of an instant hot water dispenser; and
FIG. 2 is a schematic diagram of an instant hot water dispenser according to a preferred embodiment of the present invention.
DESCRIPTION OF THE DISCLOSED EMBODIMENTS
Referring to the drawings, there is shown an instant hot water dispenser 10 for heating water to a temperature suitable for the preparation of hot drinks which in the embodiment shown is located below a work surface/sink level.
The instant hot water dispenser 10 comprises a storage tank 39 moulded from a synthetic plastics material and defining a chamber 34 for containing a reservoir of hot water 38, heating means 42 for maintaining the hot water at a predetermined temperature, water supply means 43 for maintaining a readily available source of water to the storage tank 39, and selectively operable water discharge means 44 for removing hot water from the storage tank 39. The instant hot water dispenser 10 further comprises condensing chamber 12 for condensing steam from the storage tank 39 to be fed b
REFERENCES:
patent: 2373124 (1945-04-01), Le Frank
patent: 4077545 (1978-03-01), Karls
patent: 4513887 (1985-04-01), Wicke et al.
patent: 4990746 (1991-02-01), Hammond
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