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US 6,350,967 B1Granted
Energy saving water heater control
AssigneeAmerican Water Heater Company
InventorAllen W. Scott
Life of this patent
Estimating the term…
Abstract
A water heater of the invention includes a water container; an element located to heat water in the water container; a sensor located to sense temperature; and a controller, the controller monitors the sensed temperature and compares the sensed temperature against a control temperature, with the controller further adjusting the control temperature a defined amount when the sensed temperature varies a desired amount from the control temperature.
Claims24
An electric water heater comprising:
- a water container;
- at least one element located to heat water in said water container;
- at least one sensor located to sense temperature of water in said water container;
- and a controller, said controller monitoring said sensed temperature of said at least one sensor and operating said at least one element to turn on to heat water in said water container to a pre-set temperature, wherein said controller further adjusts a control temperature of the water in said water container a defined amount from said pre-set temperature when said at least one element is turned on to heat water in said water container.
1 more element
An electric water heater comprising:
- a water container;
- a first element located to heat water in said water container;
- a second element to heat water in said water container;
- a second sensor located to sense temperature of water in said water container;
- and
- a controller, said controller monitoring said sensed temperatures of said first and second sensors and comparing said sensed temperature against a control temperature, with said controller operating said first and second elements to heat water in said water container to a pre-set temperature based on said comparison, wherein said controller further adjusts said control temperature a defined amount from said pre-set temperature when said sensed temperature of either said first sensor or said second sensor varies a desired amount from said control temperature.
3 more elements
An electric water heater comprising:
- a water container;
- a first element located to heat water in said water container;
- a first sensor located to sense temperature of water in said water container;
- a second element to heat water in said water container;
- a second sensor located to sense temperature of water in said water container;
- and
- a controller, said controller monitoring said sensed temperatures of said first and second sensors and comparing said sensed temperatures against a control temperature, wherein when said sensed temperature of said first sensor is a desired amount less than said control temperature, said controller operates said first element to heat water in said container and lowers said control temperature a defined amount, and when said sensed temperature of said second sensor is a desired amount less than said control temperature, said controller operates said second element to heat water in said container and raises said control temperature a defined amount.
4 more elements
An electric water heater comprising:
- a water container;
- a first element located to heat water in said water container;
- a first sensor located to sense temperature of water in said water container;
- a second element to heat water in said water container;
- a second sensor located to sense temperature of water in said water container;
- and
- a controller, said controller monitoring said sensed temperature of said first and second sensors and operating said first and second elements to heat water in said water container;
- wherein said controller further adjusts a control temperature of the water in said water container a defined amount when said water in said water container is heated, and wherein said controller lowers said control temperature a defined amount when said sensed temperature of said first sensor is a desired amount less than said control temperature, and said controller raises said control temperature a defined amount when said sensed temperature of said second sensor is a desired amount less than said control temperature.
5 more elements
An electric water heater comprising:
- a water container;
- a first element located to heat water in said water container;
- a first sensor located to sense temperature of water in said water container;
- a second element to heat water in said water container;
- a second sensor located to sense temperature of water in said water container;
- and
- a controller, said controller monitoring said sensed temperatures of said first and second sensors and comparing said sensed temperatures against a control temperature, with said controller operating said first and second elements to heat water in said water container based on said comparison;
- wherein said controller further adjusts said control temperature a defined amount when said sensed temperature of either said first sensor or said second sensor varies a desired amount from said control temperature;
- and said controller adjusts said control temperature by lowering said control temperature a defined amount when said sensed temperature of said first sensor is a desired amount less than said control temperature, and said controller raises said control temperature a defined amount when said sensed temperature of said second sensor is a desired amount less than said control temperature.
6 more elements
Dependencies are inferred from the claim text.