WO2011089577A1 - Système, procédé, circuit et ensemble de distribution d'eau chaude - Google Patents

Système, procédé, circuit et ensemble de distribution d'eau chaude Download PDF

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Publication number
WO2011089577A1
WO2011089577A1 PCT/IB2011/050302 IB2011050302W WO2011089577A1 WO 2011089577 A1 WO2011089577 A1 WO 2011089577A1 IB 2011050302 W IB2011050302 W IB 2011050302W WO 2011089577 A1 WO2011089577 A1 WO 2011089577A1
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WO
WIPO (PCT)
Prior art keywords
water
reservoir
temperature
heating elements
control logic
Prior art date
Application number
PCT/IB2011/050302
Other languages
English (en)
Inventor
Nathan Galperin
Original Assignee
Isoterma Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Isoterma Ltd. filed Critical Isoterma Ltd.
Publication of WO2011089577A1 publication Critical patent/WO2011089577A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
    • F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
    • F24H9/2021—Storage heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/212—Temperature of the water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/355—Control of heat-generating means in heaters
    • F24H15/37—Control of heat-generating means in heaters of electric heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/395—Information to users, e.g. alarms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/04—Sensors
    • F24D2220/042—Temperature sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/08—Storage tanks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2240/00—Characterizing positions, e.g. of sensors, inlets, outlets
    • F24D2240/10—Placed within or inside of
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2240/00—Characterizing positions, e.g. of sensors, inlets, outlets
    • F24D2240/26—Vertically distributed at fixed positions, e.g. multiple sensors distributed over the height of a tank, or a vertical inlet distribution pipe having a plurality of orifices

Definitions

  • the present invention generally relates to the field of water supply. More specifically, this invention relates to a system, method, circuit and assembly for providing heated water.
  • Water heating is a thermodynamic process using an energy source to heat water above its initial temperature.
  • Typical domestic uses of hot water are for cooking, cleaning, bathing, and space heating.
  • both hot water and water heated to steam have many uses.
  • water is traditionally heated in vessels known as water heaters, kettles, cauldrons, pots, or coppers. These metal vessels heat a batch of water, however, they are inefficient, cannot heat portions of the water and do not produce a continual supply of heated water at a preset temperature. The temperature will vary based on the consumption rate of hot water.
  • Appliances for providing a more constant supply of hot water are variously known as water heaters, boilers, heat exchangers, calorifiers, or geysers depending on whether they are heating potable or non-potable water, in domestic or industrial use, their energy source, and in which part of the world they are found.
  • potable water heated for uses other than space heating is sometimes known as domestic hot water (DHW).
  • DHW domestic hot water
  • the present invention is a system, method, circuit and assembly for providing heated water.
  • an apparatus for providing heated water comprising: a. a water reservoir;
  • each sensor is functionally associated with a different region of the water reservoir and is adapted to produce an indicator indicative of a water temperature in its respective region;
  • heated water monitoring logic adapted to calculate, estimate or otherwise determine based at least partially on the indicators produced by the sensors and/or on one or more parameters associated with a geometry of said reservoir or associated with a geometry of a region of the said reservoir:
  • control logic adapted to receive information relating to at least one water volume/temperature unit in the water reservoir and to cause the heating elements to heat water, with or without a duty cycle, if the volume/temperature unit is below a threshold;
  • digital memory functionally associated with the control logic and containing one or more profiles, wherein the thresholds used by the control logic may be based at least partially on said heating profiles;
  • an energy meter adapted to measure the amount of energy delivered to the heating elements
  • an Ohmmeter adapted to measure the electrical resistance of the heating elements
  • processing logic adapted to calculate, estimate or otherwise determine the amount of sediment build-up on the heating element, based at least partially on the measurements performed by the ohmmeter;
  • processing circuitry adapted to communicate with one or more remote devices and further adapted to allow a remote device to:
  • a system for providing heated water comprising one or more of the elements of the apparatus described above with the addition of one or more user interfaces adapted to communicate with at least one other component of the system.
  • an apparatus comprising: a. at least two water temperature sensors adapted to produce an indicator indicative of a water temperature;
  • a physical interface assembly adapted to connect the apparatus with a water reservoir such that each of the sensors will be functionally associated with a different region of the water reservoir;
  • heated water monitoring logic adapted to calculate, estimate or otherwise determine a temperature distribution in the water contained in said water reservoir based at least partially on said indicators;
  • control logic adapted to cause heating elements functionally associated with the water reservoir to heat water in said reservoir, with or without a duty cycle, based at least partially on the calculations, estimations and determinations performed by the water monitoring logic.
  • Fig. 1 - is a block diagram of an exemplary apparatus and system for providing heated water, in accordance with some embodiments of the present invention.
  • Fig. 2 - is a block diagram of an exemplary leak detector, in accordance with some embodiments of the present invention.
  • server may refer to a single server or to a functionally associated cluster of servers.
  • Embodiments of the present invention may include apparatuses for performing the operations herein.
  • This apparatus may be specially constructed for the desired purposes, or it may comprise a general purpose computer selectively activated or reconfigured by a computer program stored in the computer.
  • a computer program may be stored in a computer readable storage medium, such as, but is not limited to, any type of disk including floppy disks, optical disks, CD-ROMs, magnetic-optical disks, read-only memories (ROMs), random access memories (RAMs) electrically programmable readonly memories (EPROMs), electrically erasable and programmable read only memories (EEPROMs), magnetic or optical cards, or any other type of media suitable for storing electronic instructions, and capable of being coupled to a computer system bus.
  • the present invention is a method, circuit, apparatus, assembly and system for providing heated water.
  • one or more sets of sensors e.g. temperature sensors
  • each set of sensors may be functionally associated with one water reservoir and may include two or more sensors functionally associated with a different region (e.g. different depths) of the water reservoir, such as a hot water heater/boiler water storage chamber.
  • Each sensor may be adapted to generate an indicator indicating the temperature of the water in its respective region.
  • the sensors may be further adapted to communicate these indicators to a heated water monitoring logic.
  • the sensors may be fitted into the hot water reservoir upon manufacture of the reservoir, whereas according to further embodiments of the present invention, the sensors may be adapted to be installed in an existing reservoir, such that each sensor may be functionally associated with a different region of the reservoir.
  • Heated water monitoring logic such as a digital controller circuit or a program running on a multipurpose processing unit, may receive signals indicating water temperature from each of at least two of the sensors from each set of sensors and may be adapted to calculate, estimate or otherwise determine, based on: (1) the geometry, i.e. shape and dimensions, of the reservoir and/or the regions associated with each sensor; (2) the temperature readings from each of the two or more sensors; and/or (3) preprogrammed parameters and formulas:
  • a heated water monitoring logic which is monitoring an 200 liter cylindrical water boiler and has received, from the set of sensors associated with the water boiler, the readings 60°c, 55°c, 50°c and 45°c from 4 sensors equally spaced along the height of the water boiler's water storage chamber, may determine that there are 50 liters of 60°c water in the chamber, 50 liters of 55°c water, 50 liters of 50°c water and 50 liters of 55°c water; and/or
  • the heated water monitoring logic may determine that the hottest water volume/temperature unit is 50 liters of 60°c water.
  • the heated water monitoring logic may calculate the volume of water contained in each region associated with each sensor, based on the geometry of the region. For example, if the region is cylindrical in shape, the heated water monitoring logic may perform the calculation: ⁇ radius 2 height to determine the volume of the region.
  • the heated water monitoring logic may be pre-programmed with the volumes of each region. The heated water monitoring logic may then determine that a water volume/temperature unit equal to the volume of the water contained in each region at the temperature indicated by the respective sensor is present in the reservoir. By performing this determination for each region in the reservoir, the heated water monitoring logic may determine all of the water volume/temperature units currently present in the reservoir. By comparing the volume of all the water volume/temperature units present in the reservoir a distribution of temperature within the water in the reservoir may be determined.
  • monitoring of the water volume/temperature units may be performed substantially continuously, intermittently and/or upon the occurrence of a particular event, such as whenever a user performs certain operations on the system/apparatus.
  • a particular event such as whenever a user performs certain operations on the system/apparatus.
  • the monitoring of the water volume/temperature units in which the monitoring of the water volume/temperature units is performed intermittently, it may be performed more often while functionally associated heating elements are active and/or during times in which an active heating profile (described below) mandates a certain amount of heated water be maintained or generated in the reservoir.
  • control logic adapted to regulate the operation of one or more heating elements, integral with or otherwise functionally associated or adapted to be functionally associated with the reservoir, and/or power (e.g. electricity, gas, etc.) delivery to the one or more heating elements.
  • a heating element operating with a 20% duty cycle may be active for 2/10 of a second and then inactive for 8/10 of a second and then active for 2/10 of a second and then inactive for 8/10 of a second and so on.
  • the heating element may also be active for 4/10 of a second and then inactive for 16/10 of a second and then active for 4/10 of a second and then inactive for 16/10 of a second and so on and still be considered to be operating with a 20% duty cycle.
  • any period of time may be used as long as the ratio between active and inactive times is maintained.
  • the control logic may determine the duty cycle based on the relation between the current temperature of the water in the reservoir surrounding the heating element, as determined by the heating water monitoring logic, and the target temperature, wherein the target temperature is a defined temperature of water desired.
  • the control logic may determine the duty cycle based on the calculation:
  • the power rating may be pre-programmed into the control logic, determined by the measurements performed by an energy meter and/or based on previous duty cycle determinations and resulting heating performance.
  • control logic may also use a proportional-integral-derivative (PID) algorithm to determine and/or vary the duty cycle to optimize the water heating process.
  • PID proportional-integral-derivative
  • control logic may include or be functionally associated with digital memory, which digital memory may store one or more heating profiles.
  • Each of the one or more heating profiles may include one or more parameters indicating a water volume/temperature unit (e.g. two showers, four showers, 50 liters of 60°c water, etc.) to be generated at one or more particular times and/or to be maintained during one or more time periods of a day (e.g. between 7am and 10am, between 5pm and 8pm, etc.) and/or during the entire day.
  • a heating profile may also include one or more parameters that indicate a temperature range to be generated and/or maintained in the heated water at a particular time and/or times.
  • the heating profiles may be recurring, e.g. maintain sufficient hot water for 2 showers of 60°c water every day from 8 a.m. to 10 a.m., or instancial, e.g. generate sufficient hot water for 1 shower of 55°c water immediately or maintain 1 shower of 60°c water from 8 p.m. to 10 p.m. tomorrow.
  • the control logic may check if the heated water monitoring logic's current determinations indicate that the current water volume/temperate units present in the reservoir meet the required threshold. In the event that they do not, the control logic may cause the heating elements to generate and/or maintain heated water, in accordance with active heating profiles, by causing the heating elements, directly and/or by regulating the power delivery to the heating elements, to heat water in the reservoir until the heated water monitoring logic's determinations show that the required water volume/temperate unit(s) dictated by the respective heating profile for the current time have been generated, i.e.
  • Heating profiles may mandate generation of one or more water volume/temperature units at a specific time or maintenance of one or more water volume/temperature units throughout a specific time period.
  • the control logic may cause the heating elements to generate the required amount of heated water at the required time, however, once the required amount has been generated at the required time the control logic will not cause more water to be heated even if the amount of heated water present in the reservoir or its temperature goes down, e.g. if portions of the water are later used.
  • control logic may cause the heating elements to generate the required amount of heated water at the required time and continue to generate more heated water, throughout the specified time of maintenance, every time the amount of heated water present in the reservoir or its temperature goes down.
  • one or more user interfaces may be comprised of: (1) one or more graphic displays, (2) user controls (e.g. buttons and knobs), (3) processing circuitry and/or (4) one or more communication modules.
  • the user interfaces may be adapted to receive from the control logic and display to a user, data relating to the operation of the heating elements, data relating to the delivery of power to the heating elements, data relating to the water volume/temperature units currently available in the reservoir and/or any other data relating to the operation of the system.
  • the user interfaces may be further adapted to display to a user heating profiles and to allow a user to create, delete, edit and/or activate/deactivate heating profiles.
  • the user interfaces may be further adapted to allow a user to control any other operation of the control logic and/or to override/bypass its operation and directly control the heating elements and/or delivery of power to the heating elements.
  • the user interfaces, the control logic, the sensors and/or remote devices may be adapted to communicate with each other via wireless and/or linear communication and/or via a distributed data network, such as the internet.
  • Remote Devices any device adapted to communicate over: (1) a distributed data network, such as the internet (e.g. mobile phones, computers, etc); (2) a phone line ; or (3) any other means of remote communication known today or to be devised in the future.
  • the control logic may be adapted to communicate with one or more remote devices, and may be further adapted to:
  • c. allow a user of the remote device to perform any action that can be performed on a user interface described above.
  • an automated power supply system such as is operated by some utility companies, to regulate and/or limit power consumption by the heating elements and/or to disconnect power supply to the heating elements altogether.
  • an energy meter functionally associated or adapted to be functionally associated with the power supply for the heating elements which energy meter may be adapted to measure the amount of energy supplied to the heating elements and may be further adapted to send data relating to its measurements to the control logic and/or to user interfaces. This data may be displayed to a user, on a user interface display and/or a remote device display, and/or reported to a third party, such as a utility company.
  • an ohmmeter which ohmmeter may be adapted to measure the electrical resistance of one or more electric heating elements and to send the resistance parameters to the control logic.
  • the control logic may be adapted to momentarily deactivate the heating elements, while they are in operation, and check the electrical resistance of the heating elements at that moment, as measured by the ohmmeter.
  • a parameter indicating the temperature of the electric coil within the heating elements, while they are in operation, in relation to the temperature of the water surrounding the heating element at that time, as determined by the heated water monitoring logic may thus be determined.
  • sediment build-up reduces the rate of heat transfer from the heating elements to the surrounding water, the more sediment has built up on the heating elements the hotter the coil within the heating elements will get, in relation to the temperature of the water surrounding the heating element, during the operation of the heating element.
  • control logic may be adapted to determine the extent of sediment build-up on the heating elements, based on measurements performed by the ohmmeter during the momentary deactivation of the heating elements mentioned above.
  • the control logic may be adapted to perform this determination intermittently and further adapted to issue a warning when it determines that sediment build-up exceeds a pre-defined threshold.
  • the control logic may be adapted to determine the amount of heat energy present in the water contained in the reservoir at a given time, based on the determinations performed by the heated water monitoring logic. This determination may be performed by multiplying the volume of water in each water volume/temperature unit present in the reservoir, by its temperature.
  • the control logic may be further adapted to determine an increase in the amount of heat energy present in the water contained in the reservoir, over a period of time, by comparing the amount of heat energy present in the water before and after the relevant time period. By comparing this increase to the amount of energy delivered to the heating elements over the same period of time, based on the duty cycles used during those periods of time, an energy conversion efficiency parameter may be determined by the control logic, i.e.
  • the control logic may thus determine what percentage of the energy delivered to the heating elements is being converted into heat energy. As sediment buildup on the heating elements reduces the energy conversion efficiency of the heating elements, the control logic may be adapted to analyze the amount of sediment build-up on the heating elements, based on the energy conversion efficiencies it determines from time to time. i.e. if the control logic finds that the same duty cycle previously used in a situation, wherein the same beginning water temperature existed surrounding the heating elements, produces a slower rate of water heating in the reservoir, it may determine that sediment has built up on the heating elements. The degree of decrease in water heating rate may determine the extent of sediment build up.
  • the control logic may store parameters relating to rates of water heating in the reservoir when specific duty cycles are used.
  • the control logic may be further adapted to issue an alert to a user when sediment build up reaches or exceeds a pre-determined threshold.
  • an apparatus and/or system for regulating the heating of water and/or heating water in the water reservoir of an existing water heater may be provided.
  • the apparatus and/or system may be comprised of one or more of the components described in the other embodiments of the present invention described above, wherein said components are further adapted to be functionally associated with an existing water heater, separately or in unison.
  • the apparatus and/or system may be further comprised of a physical interface assembly adapted to connect the apparatus or system with an existing water heater such that each of the components will be functionally associated with the existing water heater in a way that will allow it to function as described in the other embodiments of the present invention described above. Therefore, the physical interface assembly may be adapted to:
  • one or more solar radiation meters may be provided, which solar radiation meters may be located in the vicinity of one or more solar panels functionally associated with the water reservoir.
  • Processing circuitry functionally associated with the solar radiation meters may compare the amount of solar energy present in the vicinity of the solar panels over a given period of time, as measured by the solar radiation meters, with the amount of heat energy being supplied to the water within the reservoir from the solar panels over the same period of time. The determination of what amount of heat energy is being supplied to the water within the reservoir from the solar panels may be based on determinations performed by the heated water monitoring logic.
  • Said processing circuitry may be further adapted to analyze the efficiency of the solar panels based on said comparisons.
  • Said processing circuitry may be further adapted to issue a warning to a user when said efficiency falls below a pre-defined threshold.
  • a leak detector (example of which is shown in Figure 2), which leak detector may be adapted to be situated in the vicinity of a water reservoir, and may be further adapted to issue a warning when a leak of water from the water reservoir is detected.
  • Said leak detector may be adapted to detect a rise in the amount of moisture present beneath the leak detector, based on a rise of the dielectric constant of capacitors located on the bottom of the leak detector and may be further adapted to detect a the amount of moisture present on the sides of the leak detector based on the dielectric constant of capacitors located on the sides of the leak detector.
  • the leak detector may be further adapted to determine that there is water present under the leak detector, indicating a possible leak in the water reservoir, when a certain rise in the moisture underneath the leak detector is detected, and may be further adapted to determine a level of water present on the sides of the leak detector, indicating the extent of a potential leak, based on the amount of moisture present on the sides of the leak detector.
  • the leak detector may be yet further adapted to issue a warning to a user when a leak is detected, which warning may include an indicator of the extent of the leak.
  • each of the words, "comprise” “include” and “have”, and forms thereof, are not necessarily limited to members in a list with which the words may be associated.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

La présente invention concerne un procédé, un circuit, un appareil, un ensemble et un système de distribution d'eau chaude. Certains modes de réalisation de l'invention peuvent utiliser un ou plusieurs jeux de capteurs (par exemple, des capteurs de température). Chacun desdits jeux de capteurs peut être fonctionnellement associé à un réservoir d'eau et il peut comprendre deux capteurs ou plus, fonctionnellement associés à une région différente (par exemple, des profondeurs différentes) du réservoir d'eau, par exemple d'une cuve de stockage d'un chauffe-eau/ boiler. Une logique de surveillance de l'eau chaude peut recevoir des signaux indiquant la température de l'eau émise par au moins deux des capteurs de chaque jeu de capteurs. Ladite logique peut être conçue pour calculer, estimer ou autrement déterminer une distribution des températures de l'eau contenue dans le réservoir.
PCT/IB2011/050302 2010-01-25 2011-01-24 Système, procédé, circuit et ensemble de distribution d'eau chaude WO2011089577A1 (fr)

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IL20350110 2010-01-25
IL203501 2010-01-25

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WO2011089577A1 true WO2011089577A1 (fr) 2011-07-28

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013069017A1 (fr) * 2011-11-08 2013-05-16 Merkel Sefi Système pour commander un volume et une température d'eau dans un chauffe-eau électrique et pour fournir des informations associées
CN103267353A (zh) * 2013-04-17 2013-08-28 浙江长兴奥利尔家用电器有限公司 开水器分水结构
FR3029274A1 (fr) * 2014-11-28 2016-06-03 Atlantic Industrie Sas Chauffe-eau a accumulation
RU176715U1 (ru) * 2017-04-04 2018-01-25 Волкаст Лимитед Накопительный, аккумуляционный водонагреватель
US20220180383A1 (en) * 2020-12-08 2022-06-09 Haier Us Appliance Solutions, Inc. Water heater with electronic mixing valve and automatic set point

Citations (4)

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Publication number Priority date Publication date Assignee Title
US20040073524A1 (en) * 2002-10-15 2004-04-15 Smith Wade W. Water metering system
US20070295286A1 (en) * 2006-06-27 2007-12-27 Emerson Electric Co. Water heater with dry tank or sediment detection feature
US20100004790A1 (en) * 2008-07-01 2010-01-07 Carina Technology, Inc. Water Heater Demand Side Management System
US20100141422A1 (en) * 2004-05-22 2010-06-10 Feinleib David A Method, apparatus, and system for projecting hot water availability for bathing

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040073524A1 (en) * 2002-10-15 2004-04-15 Smith Wade W. Water metering system
US20100141422A1 (en) * 2004-05-22 2010-06-10 Feinleib David A Method, apparatus, and system for projecting hot water availability for bathing
US20070295286A1 (en) * 2006-06-27 2007-12-27 Emerson Electric Co. Water heater with dry tank or sediment detection feature
US20100004790A1 (en) * 2008-07-01 2010-01-07 Carina Technology, Inc. Water Heater Demand Side Management System

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013069017A1 (fr) * 2011-11-08 2013-05-16 Merkel Sefi Système pour commander un volume et une température d'eau dans un chauffe-eau électrique et pour fournir des informations associées
CN103267353A (zh) * 2013-04-17 2013-08-28 浙江长兴奥利尔家用电器有限公司 开水器分水结构
FR3029274A1 (fr) * 2014-11-28 2016-06-03 Atlantic Industrie Sas Chauffe-eau a accumulation
RU176715U1 (ru) * 2017-04-04 2018-01-25 Волкаст Лимитед Накопительный, аккумуляционный водонагреватель
US20220180383A1 (en) * 2020-12-08 2022-06-09 Haier Us Appliance Solutions, Inc. Water heater with electronic mixing valve and automatic set point

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