Electrical heating apparatus
AssigneeAtmor Industries (1973) Ltd.
InventorYoram Hadar
Life of this patent
Estimating the term…
Abstract
Electrical heating apparatus includes an electrical heater in which the inlet conduit for inletting cold water to the electrical heater and/or the outlet conduit for outletting hot water thereto from the electrical heater is integrally formed with a pressure-responsive device which senses the flow rate to or through the electrical heater to control the energization of the electrical heater. The apparatus also includes a regulating valve constituted of a membrane and a stem having a head of convex configuration facing the membrane but normally spaced therefrom to define a flow-control passageway which creates differential pressures acting on the membrane tending to deform the membrane such as to maintain a relatively constant flow rate through the flow control passageway despite variations in water inlet pressure.
Claims29
Electrical heating apparatus for automatically heating water passing therethrough from a cold water supply pipe to a hot water delivery pipe, comprising:
- a water heater housing including an electrical heater therein, an inlet coupling, and an outlet coupling;
- an electrical control device controlling said electrical heater;
- an inlet conduit connectable between the water supply pipe and the inlet coupling of the electrical heater housing for inletting cold water;
- an outlet conduit connectable between the outlet coupling of the water heater housing and the water delivery pipe for outletting hot water thereto;
- and a pressure-responsive device cooperable with said electrical control device to control the electrical heater;
- characterized in that said pressure-responsive device is connected to one of said conduits in parallel to said electrical heater housing, and in that said pressure-responsive device includes an inlet integrally formed with said one conduit and the respective coupling of the water heater housing.
Electrical heating apparatus for automatically heating water passing therethrough from a cold water supply pipe to a hot water delivery pipe, comprising:
- a housing including an electrical heater therein;
- an electrical control device controlling said electrical heater;
- an inlet conduit connectable between the water supply pipe and the electrical heater for inletting cold water to the electrical heater;
- a heater coupling communicating with said inlet conduit for inletting water therefrom into said electrical heater;
- an outlet conduit connectable between the electrical heater and the water delivery pipe for outletting hot water thereto from the electrical heater;
- and a pressure-responsive device cooperable with said electrical control device to control the electrical heater and having an inlet communicating with said inlet conduit and heater coupling;
- characterized in that said pressure-responsive device senses the flow rate to or through the electrical heater to control the energization of said electrical heater in response to the sensed flow rate.
A regulating valve, comprising:
- a housing;
- a membrane within said housing;
- and a stem within said housing having a head of convex configuration facing said membrane but normally spaced therefrom to define a flow-control passageway;
- the convex configuration of said stem head producing, with said membrane, different cross-sectional areas and thereby different flow rates in said control passageway, creating differential pressures acting on said membrane tending to deform the membrane such as to maintain a relatively constant flow rate through the flow control passageway despite variations in water inlet pressure.
Dependencies are inferred from the claim text.