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US 4,326,552 AGranted
Heater for heating flows of fluid and dishwashing machine provided therewith
OwnerIngo Bleckmanninventor
Life of this patent
Estimating the term…
Abstract
A heater for heating at least two separate fluid flows comprises a heater arrangement mounted on an inner pipe through which one of the fluids flows and which is surrounded by an outer pipe through which the other fluid flows over the heater arrangement. The fluid flowing through the inner pipe may be dish-washing liquid for a dishwashing machine, while the fluid flowing through the outer pipe and over the heater may be dish-drying air.
Claims14
A dishwashing machine comprising:
- a vessel adapted to receive items to be washed and dried;
- a first flow conduit for carrying a flow of dish-washing liquid to said vessel;
- a second flow conduit for carrying a flow of drying air for drying items in said vessel;
- and
- a heating means operatively associated with said first and second flow conduits, for heating the washing liquid flowing through the first flow conduit during a washing operation and for heating the flow of drying air through the second conduit during a drying operation.
2 more elements
A dishwashing machine comprising:
- a housing for receiving items to be washed and dried;
- distributor means disposed within said housing for distributing washing liquid and drying air in the housing;
- a first flow conduit for carrying washing liquid to the distributor means;
- a second flow conduit for carrying drying air to the distributor means, said second flow conduit being disposed around and surrounding the first flow conduit;
- the walls defining said first and second conduits being spaced from each other;
- and
- a heating means disposed in the space between the first and second flow conduits and operable to heat washing liquid flowing through the first conduit by heat transfer through the wall of the first conduit and operable to heat air flowing through the second flow conduit by heat transfer to the air flowing over the heating means.
4 more elements
Dependencies are inferred from the claim text.