A water heater and a method of operating same
A heater and water heating technology, applied in water heaters, heating methods, fluid heaters, etc., can solve customer dissatisfaction and other problems
Active Publication Date: 2014-11-05
ZIP IND (AUST) PTY LTD
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Problems solved by technology
Alternatively, if the 1.5°C offset is in the direction of an increase in temperature, the water heater will maintain a temperature of only 97.5°C, which will lead to customer dissatisfaction
Method used
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Embodiment Construction
[0040] figure 1 An embodiment of an instant boiling water heater 10 is shown. The water heater 10 includes a water tank 12 filled with water W up to a predetermined water level L. As shown in FIG. The water tank 12 includes an inlet 12a for tap or relatively cool water, and an outlet 12b for boiling or hot water, the latter connected to a faucet or other user activated flow control valve (not shown). The electric heating element 14 is arranged inside the water tank 12 and close to the bottom of the water tank 12 . A temperature sensor is likewise arranged in the water tank 12 , the temperature sensor being in the form of a thermistor 16 .
[0041] The heating element 14 and thermistor 16 are connected to a controller 18, such as a programmable logic controller (PLC) or the like. The controller 18 receives power from an electrical outlet 20 . A water inlet control valve 22 is also connected to the controller 18 . The water inlet 22 a of the control valve 22 receives tap wa...
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A method of determining an operating water temperature for a boiling water heater (10), the method including the following steps (a) adding water to a tank (12) to a predetermined level; (b) energising a heating means (14) within the tank (12) to heat the water in the tank (12) to an initial predetermined temperature; (c) de-energising the heating means (14) when the initial predetermined temperature is reached and measuring an initial overshoot temperature differential above the initial predetermined temperature; (d) calculating a further predetermined temperature being the sum of the initial predetermined temperature and a predetermined amount of the initial overshoot temperature differential; (e) waiting until the temperature of the water in the tank (12) has reduced by a predetermined drop from the initial predetermined temperature; (f) energising the heating means (14) within the tank (12) to heat the water in the tank (12) to the further predetermined temperature as calculated in (d) above; (g) de-energising the heating means (14) when the further predetermined temperature is reached and measuring a further overshoot temperature differential above the further predetermined temperature; (h) re-calculating the further predetermined temperature being the sum of the current further predetermined temperature and a predetermined amount of the current further overshoot temperature differential; (i) waiting until the temperature of the water in the tank (12) has reduced by a predetermined drop from the further predetermined temperature of step (h); (j) continuing steps (f) to (i) until the further overshoot temperature substantially equals the predetermined temperature, thereby becoming a boiling calibration temperature; and (k) substracting an offset temperature from the boiling calibration temperature of step (h) to thereby determine the operating water temperature.
Description
technical field [0001] The present invention relates to a water heater and method of operation thereof. More specifically, the present invention relates to a method of determining an operating water temperature of a boiling water heater and a boiling water heater suitable for determining the operating water temperature. [0002] The present invention is mainly developed for boiling water heaters, and the present invention will be described below in conjunction with this application. However, it is understood that the present invention is not limited to a specific field of application, and is also suitable for application in, for example, combined water heaters and water cooling units. Background technique [0003] Depending on (different) atmospheric conditions, water boils at different temperatures. The higher the altitude, the lower the air pressure and the resulting lower boiling temperature of the water. For best performance and highest customer satisfaction, at a giv...
Claims
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IPC IPC(8): F24H1/20F24D17/00
CPCF24H1/20F24D17/00F24H1/202F24H9/2021H05B1/0244G05D23/1917A47J31/54A47J31/58A47J27/21A47J27/21008A47J27/21058A47J27/21116A47J27/21158F24H15/37F24H15/414F24H15/31F24H15/223
Inventor B·切特科夫鲍里斯·福克斯凯文·莫尔特
Owner ZIP IND (AUST) PTY LTD