WO2000058668A1 - Chauffe-eau - Google Patents

Chauffe-eau Download PDF

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Publication number
WO2000058668A1
WO2000058668A1 PCT/IL2000/000159 IL0000159W WO0058668A1 WO 2000058668 A1 WO2000058668 A1 WO 2000058668A1 IL 0000159 W IL0000159 W IL 0000159W WO 0058668 A1 WO0058668 A1 WO 0058668A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
temperature
tank
hot water
usable
Prior art date
Application number
PCT/IL2000/000159
Other languages
English (en)
Inventor
Menachem Cohen
Ofer Gabay
Original Assignee
Menachem Cohen
Ofer Gabay
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 Menachem Cohen, Ofer Gabay filed Critical Menachem Cohen
Priority to AU31890/00A priority Critical patent/AU3189000A/en
Publication of WO2000058668A1 publication Critical patent/WO2000058668A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
    • G01K7/08—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples the object to be measured forming one of the thermoelectric materials, e.g. pointed type
    • 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
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1051—Arrangement or mounting of control or safety devices for water heating systems for domestic hot 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
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/144—Measuring or calculating energy consumption
    • 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
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/174—Supplying heated water with desired temperature or desired range of temperature
    • 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
    • F24H15/215—Temperature of the water before heating
    • 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
    • F24H15/223—Temperature of the water in the water storage tank
    • F24H15/225—Temperature of the water in the water storage tank at different heights of the tank
    • 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
    • F24H15/269—Time, e.g. hour or date
    • 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
    • F24H15/281—Input from user
    • 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
    • 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
    • F24H15/40—Control of fluid heaters characterised by the type of controllers
    • F24H15/414—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based
    • F24H15/421—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based using pre-stored data
    • 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
    • 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
    • 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

  • This invention relates to hot water installations and, in particular, to thermostatic control of the water temperature in such devices.
  • Domestic hot water installations typically include a hot water tank which may be situated within a house or apartment or, alternatively, on the roof thereof.
  • the hot water temperature is normally factory set, provision possibly being made for adjustment thereof during installation.
  • such adjustment requires specialized knowledge and/or tooling and is beyond the ability of the average house-holder.
  • a solar panel is provided on the roof of the building and hot water is contained in a storage tank also normally situated on the roof of the building adjacent to the solar panel. Water is fed to the domestic hot water supply system via a thermally insulated pipe running from the storage tank on the roof of the building and gaining entrance to the domestic hot water supply.
  • some electrical backup is also normally provided in the form of an electrical immersion heater disposed within the hot water tank.
  • the immersion heater brings the hot water up to temperature relatively quickly, and is often used fairly indiscriminately by a householder who wishes to take a bath or a shower quickly and speculates that the hot water temperature is inadequate.
  • the decision to boost the hot water temperature by using the electrical immersion heater amounts to guesswork on the part of the householder and, as often as not, will result in unnecessary wastage of energy.
  • an electrical immersion heater in order to boost the water temperature only to the extent that is absolutely required.
  • a person who wishes to boost the water temperature prior to taking a shower clearly has no need to heat the water tank "temperature profile" to the highest temperature enabled by the boiler thermostat. It is sufficient to heat the water tank "temperature profile” such that, when the hot water in the tank is mixed with cold water derived from the cold water supply, the resulting hot water temperature is around 40 to 45°C (the temperature usually most comfortable for a shower) for the desired shower duration.
  • domestic water tanks allow for the hot water to be syphoned off at the top of the tank and to be replaced by cold water which is fed in at the bottom of the tank. Notwithstanding the constant hot water drainage and cold water replacement which thus ensues, there exists a marked temperature gradient throughout the tank such that the temperature of water toward the upper part of the tank is greater than that of the water near the base of the tank. Thus, merely placing a temperature probe toward the upper surface of the tank would tend to provide an artificially high reading; whilst placing a temperature probe toward the base of the tank would provide an artificially low reading.
  • U.S. Patent No. 5,556,564 discloses a control unit for controlling the temperature of a domestic water supply, comprising at least two temperature sensors for inserting into a water tank so as to produce respective sensor signals representative of actual water temperature in a region of the temperature sensor and an electrical immersion heater for inserting into the water tank and energized by a source of electrical power.
  • a setting device is adjusted by a user for setting a desired water temperature and producing a corresponding set signal
  • a controllable switch is connected between the source of electrical power and the electrical immersion heater, and is responsive to the sensor signals and to the set signal for closing if the actual water temperature is lower than the desired water temperature and for opening if the actual water temperature is greater than the desired water temperature.
  • the Wittner device is typical of prior art devices which place several temperature sensors at predetermined heights within the hot water tank so that their respective readings give the householder an indication of the local temperature of the water in the vicinity of the sensor. Such affixing of temperature sensors at
  • the temperature sensors must be protected against corrosion owing to their direct contact with water.
  • some prior art devices employ several heating elements for heating different spatially distributed volumes of water on the basis that if only a small quantity of water is required, then only the
  • a hot water tank having multiple temperature sensors affixed thereto in a manner which addresses the drawbacks associated with hitherto approaches.
  • a hot water tank containing an electrically conductive wall, a heating element and at least three temperature sensors disposed at respective heights of the tank for measuring local water temperature at respective points thereof, wherein each of the temperature sensors is an electrical conductor fo ⁇ ned of a material different to that of the electrically conductive wall of the tank and which is bonded to the wall so as to fo ⁇ n a the ⁇ nocouple at a respective point of contact.
  • Water temperature is controlled by a control unit coupled to the thermocouples and responsive to respective signals produced thereby for estimating a quantity of hot water in the tank and providing an indication thereof to a user of the hot water tank.
  • the control unit is also adapted to control a rate at which water in the tank is heated so that a required quantity of shower water, for example, at the desired water temperature (around 43 °C) is available at a specified time.
  • the configuration according to the invention results in a very simple and low cost system requiring no changes in the structure of the water tank.
  • the only change required is to solder five thermocouple wires to the external wall of the water tank and on the cold water input pipe or on the user's cold water cock.
  • the thermocouples have no direct contact with the water, thus not being susceptible to corrosion or amortization and remaining reliable for the whole life of the water tank.
  • the control unit allows energy saving since water is heated only according to the user's needs. If operating properly there is no wastage caused by extra hot water that becomes cold after no usage.
  • the expected life of the water tank is enhanced by the non-invasive manner in which the temperature sensors are affixed to the tank.
  • the tank's longevity is further increased by reducing the quantity of water that is heated unnecessarily thus reducing the accumulation of harmful lime sediment in the tank.
  • the control unit provides greater user convenience since the user has the certainty of a required quantity of shower water at any time (the quantity of shower water can be given either in liters or in terms of time for which shower water is required.) He can plan his day accordingly and can order a specific quantity of shower water at scheduled times. It also gives him an indication at any time during the day of the amount of shower water there is in either the hot water tank, or in a selected portion thereof. This can save him extra costs for unnecessarily heating wasted hot water.
  • the system obviates the need for the existing boiler thermostat since the the ⁇ nocouples measure the hot water temperature whilst the control unit controls the heating element.
  • the invention is applicable to all kinds and sizes of water tanks and boilers and not only for domestic boilers regardless of the kind of heating energy.
  • the water tank according to the invention can form part of an integrated system for connection as a host to a central computer control for operating the control unit remotely.
  • Figs, la and lb are schematic representations of a hot water tank according to different embodiments of the invention.
  • Fig. 2 is a block diagram showing functionally a control unit for controlling the water temperature in the hot water tank shown in Fig. 1 ;
  • Figs. 3 to 5 are flow diagrams showing the principal operating steps carried out by the control unit shown functionally in Fig. 2.
  • Fig. la shows a first embodiment of a hot water tank 10 having a cold water inlet 11, a hot water outlet 12 and a heating element 13.
  • the tank 10 has an outer wall 14 fo ⁇ ned of iron to which there are soldered four constantin wires 15, 16, 17and 18 (constituting electrical conductors) at equally spaced intervals so as to provide a temperature profile through the tank.
  • a fifth constantin wire 19 is soldered to a base 20 of the tank near the level of the cold water inlet 11 so as to measure the temperature of the cold water entering the tank.
  • a fifth wire 21 formed of iron acts as a common wire which is soldered to the base 20 of the tank and all six wires are fed to an electronic control unit 22 that is responsive to the respective temperature differences across each of the thermocouple's ends for estimating a quantity of hot water in the tank and providing an indication thereof to a user thereof.
  • Each of the constantin wires in conjunction with the common wire form respective thermocouples across which there is generated a voltage which is a function of the temperature difference across opposite ends of the wires.
  • one junction of each thermocouple is formed between the constantin wires and the iron wall and base of the tank, whilst a remote junction of each thermocouple is formed between the constantin wires and the common wire remote from the tank.
  • thermocouples in order that the absolute temperature of the junction of each thermocouple at the hot water tank be determined, the temperature of the remote junction must first be measured and added to the temperature difference across opposite ends of the respective thermocouple.
  • a thermistor 23 is provided near the common junction of the thermocouples which are themselves anchored in a terminal strip 31 outside the control unit 22 and connected thereto by respective wires 32 (constituting "auxiliary conductors") all formed of the same material, although not necessarily of identical material to the thermocouple wires.
  • the location of the te ⁇ ninal strip 31 is not important: it can be provided anywhere between the water tank 10 and the control unit 22 and may, if desired, form an integral internal component of the water tank 10.
  • an integral thermostat 23' which is typically provided as a standard feature for controlling the heating element 13, although normally it is rendered redundant by the control unit 22.
  • Fig. lb shows a second embodiment similar in most respects to the first embodiment wherein like components are designated by identical reference numerals.
  • the principal distinction between the two embodiments resides in the manner in which the thennocouples are bonded to the wall of the hot water tank 10.
  • an electrically conductive sleeve 33 having a base portion 34 is inserted lengthwise into the tank 10 and forms an inner wall of the tank, to whose inside surface the the ⁇ nocouple wires are soldered.
  • the inside surface of the sleeve 33 makes no contact with the water in the tank and the thermocouple junctions are thus protected against corrosion or amortization.
  • the base portion 34 may also serve as the support for the heating element 13 and the thermostat 23' so that the heating element 13, the thermostat 23' as well as the sleeve 33 may be inserted into the tank 10 together.
  • the term "wall" when used in association with the tank 10 envisages any barrier which spans the height of the tank and serves to contain water therein.
  • this includes either the outer wall 14 of the tank as shown in Fig. la or an inner wall thereof as embodied by the sleeve 33 shown in Fig. lb.
  • Fig. 2 shows functionally the principal components in the control unit 22.
  • a thermistor 23 (constituting a temperature sensor) is provided outside the control unit 22 close to the terminal strip 31 of the thermocouple junction for measuring an ambient temperature in a vicinity thereof and producing a signal representative thereof.
  • the thermocouple signals are directed from the terminal strip 31 to the control unit 22 and are fed to an amplifier 24 for amplifying the thermocouple voltages so as to produce respective amplified thermocouple signals.
  • a look-up table 25 (constituting a converter) is coupled to the thermistor and is responsive to the signal produced thereby for converting the signal to an equivalent thermocouple signal corresponding to the ambient temperature.
  • An adder 26 is coupled to the look-up table 25 and is adapted to be connected to each of the thermocouple wires 15, 16, 17, 18 and 19, via the te ⁇ ninal strip 31, for adding to respective amplified thennocouple signals produced thereby the equivalent thermocouple signal so as to produce a respective absolute thermocouple signal.
  • a processor 28 coupled to the adder is responsive to each of the absolute thennocouple signals for producing a respective absolute temperature reading, which is displayed on a display 30 coupled to the processor 28.
  • the look-up table 25, the adder 26 and the processor 28 can be constituted by a suitably programmed microprocessor.
  • the processor 28 can, if desired, be replaced by a second look-up table.
  • the look-up table 25 can be integrated within the processor 28 which may be programmed to calculate the equivalent thermocouple signal according to a pre-determined function.
  • a keyboard 29 is coupled to the processor 28 and constitutes a temperature set device for manually setting a desired water temperature. As will be explained below, the keyboard 29 also serves as a quantity set device for manually setting data representative of a required quantity of water, and as a time set device for manually setting data representative of a specified time when the required quantity of hot water must be available.
  • a display 30 is coupled to the processor 28 for displaying data entered by the user as well as water temperatures and quantities calculated by the control unit 22.
  • the heating element 13 is energized via a heating control unit 35, which is responsive ly coupled to the processor 28 so as to be controlled thereby.
  • control unit 22 determines the quantity Q of water available at a desired shower temperature.
  • the voltage generated by the thermistor 23 is measured.
  • This voltage value is translated through the look-up table 25 to another value called the equivalent value.
  • the equivalent value is exactly the same value of an amplified voltage in the control unit 22 that should have been sourced by a virtual thermocouple whose one edge temperature is the same temperature as the thermistor environment and the other edge temperature is 0°C.
  • This equivalent value is added arithmetically to the amplified voltage value of each one of the five thermocouples 15, 16, 17, 18 and 19.
  • the resulting values are relative to the absolute temperatures (i.e. temperatures above or below 0°C) at the thermocouple's edges at the wall 14 of the water tank 10 or at the inner wall of the sleeve 33.
  • These values are translated to the absolute temperatures by the processor 28 which is programmed to calculate the equivalent temperature from the equivalent thermocouple signal according to a predetermined function.
  • the translated temperature profile is then displayed by the display 30.
  • thermocouple i is the temperature of thermocouple i .
  • C is the cold water temperature as measured by thermocouple 19.
  • S is a parameter indicative of the required shower temperature as by the user 40°C for hot shower, or 45 °C for very hot shower.
  • x is the mix ratio.
  • thermocouple i the estimated quantity Q, of shower water relevant to thermocouple i which represents ⁇ ln 1 of the boiler volume is given by:
  • thermocouples do not span the complete volume of the tank and/or are not equally spaced
  • the estimated quantity Q, of shower water relevant to thermocouple i which represents Mm, ⁇ of the boiler volume is given by:
  • m t is the fractional volume of the water tank served by the I thennocouple.
  • Q can be converted to a number of available showers for a specific user requiring a known average water consumption per shower, by dividing Q by the user's average water consumption per shower entered via the keyboard 28.
  • the time duration for which shower water at the required temperature is available may be calculated by dividing Q by a known average water flow rate in the shower. This can be measured either by means of a flow meter or experimentally. For example, the user can measure the time it takes to fill a bucket of known volume with shower water. The result can then be entered via the keyboard 29.
  • the user can enter a required number of showers and the control unit 22 may be adapted to multiply it by his given average water consumption per shower to derive the required shower water quantity N, or he can enter the required shower duration and the control unit 22 may be adapted to multiply it by the given average water flow rate in the shower to derive required shower water quantity N.
  • the control unit 22 will now be described for automatically controlling the heating element so that the desired quantity Q of water at the desired shower temperature will be available at a specified time t.
  • the present water quantity Q for hot shower or very hot shower is first estimated according to the algorithm described above with reference to Fig. 4. If Q is greater than the user demand N then there is no need to heat the water tank, so the heating element 13 is disabled. If Q is less than N, then the heating element 13 must be energized for sufficient time that N should be ready at time t.
  • the heating duration ⁇ t is relative to the difference between N and Q and it is read from a look-up table or is computed according to a pre-programmed function. The heating is started at a time (t - ⁇ t). Whenever Q is greater than N the heating element is disabled.
  • thermocouples formed of materials other than iron and constantin.
  • four profile thermocouples are employed, it will be appreciated that this number may be varied if desired. The minimum number required is two plus one for measuring the cold water temperature, wherein one of the thermocouples is a reference thermocouple located at a height near a level of the cold water inlet or in the inlet cock of the hot water tank or at the user's cold water cock so as to provide a first signal indicative of the temperature of cold water.
  • the invention encompasses controlling the heating element so as to provide either a specified volume of "shower water” or sufficient "shower water” for a specified time duration or for a specified number of showers at a specified time.
  • the specified time can be entered directly via the keyboard 29 or via any other suitable interface.
  • an incremental time interval can be entered starting from the current time can be entered, allowing the control unit 22 to compute the time at which hot water must be ready.
  • the desired hot water temperature may be entered in several ways. It can be entered via the keyboard; or a code can be entered indicative of the desired water temperature. For example, two settings may be provided: 40°C for a moderately hot shower and 45 °C for a very hot shower, and the desired setting can be entered via the keyboard 29 or via any other suitable interface.
  • the principles of the invention are equally applicable to the controlled heating of a desired volume of tank water for any purpose, be it for a shower, bath, washing dishes or for any other purpose.
  • usable water implies water at a desired temperature which is produced by mixing hot water already available in the tank with cold water obtained from the cold water supply so as to achieve a comfortable operating temperature for a required purpose.
  • thermocouples are displaced equal intervals in the tank, this is not essential.
  • the principles of the invention as described are equally applicable when spacing the thermocouples apart at different mutual distances and changing the formulae accordingly as explained above.
  • control unit can be provided as a separate add-on unit for connecting to temperature sensors associated with a hot water tank.
  • alphabetic characters used to designate claim steps are provided for convenience only and do not imply any particular order of perfonning the steps.

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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)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Temperature (AREA)

Abstract

Chauffe-eau et procédé permettant d'estimer une quantité disponible d'eau utilisable ayant une température désirée, ledit chauffe-eau étant alimenté en eau froide chauffée par un ensemble de chauffe pouvant être commandé. Ledit chauffe-eau comporte une paroi électriquement conductrice, un élément de chauffe et au moins trois capteurs de température placés à des hauteurs respectives de la cuve et destinés à mesurer la température locale de l'eau à des niveaux respectifs de ladite eau. Chacun des capteurs de température, qui se présente sous forme de conducteur électrique constitué d'une matière différente de celle de la paroi électriquement conductrice de la cuve, est fixé à la paroi de manière à former un thermocouple au niveau d'un point de contact respectif.
PCT/IL2000/000159 1999-03-30 2000-03-15 Chauffe-eau WO2000058668A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU31890/00A AU3189000A (en) 1999-03-30 2000-03-15 Hot water tank

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL129269 1999-03-30
IL12926999A IL129269A0 (en) 1999-03-30 1999-03-30 Hot water tank and controller therefor

Publications (1)

Publication Number Publication Date
WO2000058668A1 true WO2000058668A1 (fr) 2000-10-05

Family

ID=11072668

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL2000/000159 WO2000058668A1 (fr) 1999-03-30 2000-03-15 Chauffe-eau

Country Status (3)

Country Link
AU (1) AU3189000A (fr)
IL (1) IL129269A0 (fr)
WO (1) WO2000058668A1 (fr)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002053987A2 (fr) * 2001-01-02 2002-07-11 Aos Holding Company Reglage de temperature a etendue proportionnelle d'un ou de plusieurs elements chauffants
US7346274B2 (en) 1999-07-27 2008-03-18 Bradenbaugh Kenneth A Water heater and method of controlling the same
CN1696585B (zh) * 2004-03-19 2010-05-05 Bsh博施及西门子家用器具有限公司 一种热水制备器的液体储热器
ITAN20080052A1 (it) * 2008-11-28 2010-05-29 Merloni Termosanitari Spa Metodo per la minimizzazione dei consumi energetici di uno scaldaacqua ad accumulo tramite logica di apprendimento adattativa
EP2233858A3 (fr) * 2009-03-13 2011-07-27 BSH Bosch und Siemens Hausgeräte GmbH Accumulateur d'eau chaude doté d'un système de capteur
EP2395297A1 (fr) * 2010-06-10 2011-12-14 Atlantic Industrie Procédé et dispositif de détermination d'une capacité d'eau mitigée
WO2009144710A3 (fr) * 2008-05-26 2012-07-26 Ran Amiran Contrôle du fonctionnement d'un réservoir d'eau chauffé électriquement
WO2012069815A3 (fr) * 2010-11-22 2013-06-06 Passivsystems Limited Appareil et méthodes de surveillance d'un ballon d'eau chaude d'un système de chauffage de ballon d'eau chaude pour améliorer son rendement énergétique
EP2574893A3 (fr) * 2011-09-28 2014-07-09 Robert Bosch Gmbh Procédé et dispositif de mesure de la température dans un accumulateur thermique
GB2512024A (en) * 2013-01-08 2014-09-24 Baxi Heating Uk Ltd Improvements in water heaters
GB2518365A (en) * 2013-09-18 2015-03-25 Exergy Devices Ltd Apparatus and method for volumetric estimation of heated water
CN104729097A (zh) * 2013-12-24 2015-06-24 珠海格力电器股份有限公司 一种热水系统及其显示控制方法、装置
EP3081866A1 (fr) * 2007-07-11 2016-10-19 EC Power A/S Appareil de captation de température pour ballon d'eau chaude
RU2628929C2 (ru) * 2011-02-10 2017-08-22 Интергэс Хитинг Эссетс Б.В. Водонагреватель
US9903611B2 (en) 2013-01-24 2018-02-27 Ohad Rubinstein Solar switching system
CN112377966A (zh) * 2020-10-20 2021-02-19 佛山市南海聚腾环保设备有限公司 一种空气能采暖设备节能方法及系统
FR3102836A1 (fr) * 2019-10-30 2021-05-07 Atlantic Industrie Dispositif de chauffage d’eau
CN115615010A (zh) * 2022-12-05 2023-01-17 浙江浩普智能科技有限公司 一种熔盐储热系统电加热熔盐温度控制方法及系统

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GB2132791A (en) * 1982-12-23 1984-07-11 Colin Baker Apparatus for and a method of controlling a hot water system
EP0536109A1 (fr) * 1991-10-01 1993-04-07 Austria Email Wärmetechnik GmbH Système pour saisir des valeurs mesurées dans un appareil à accumulation de chaleur utilisant un circuit de réglage du chauffage
US5556564A (en) 1994-05-02 1996-09-17 Target Custom Made Software & Computer Ltd. Control unit for controlling the temperature of a domestic water supply
EP0756160A1 (fr) * 1995-07-25 1997-01-29 Heraeus Sensor GmbH Dispositif de mesure de température
DE19602973A1 (de) * 1996-01-27 1997-07-31 Rolf Schneider Wärmeenergievorratsmeßgerät für Wärmespeichertanks

Cited By (26)

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US8111980B2 (en) 1999-07-27 2012-02-07 Aos Holding Company Water heater and method of controlling the same
US6633726B2 (en) 1999-07-27 2003-10-14 Kenneth A. Bradenbaugh Method of controlling the temperature of water in a water heater
US6795644B2 (en) 1999-07-27 2004-09-21 Kenneth A. Bradenbaugh Water heater
US7346274B2 (en) 1999-07-27 2008-03-18 Bradenbaugh Kenneth A Water heater and method of controlling the same
WO2002053987A3 (fr) * 2001-01-02 2003-03-27 Aos Holding Co Reglage de temperature a etendue proportionnelle d'un ou de plusieurs elements chauffants
WO2002053987A2 (fr) * 2001-01-02 2002-07-11 Aos Holding Company Reglage de temperature a etendue proportionnelle d'un ou de plusieurs elements chauffants
CN1696585B (zh) * 2004-03-19 2010-05-05 Bsh博施及西门子家用器具有限公司 一种热水制备器的液体储热器
EP3081866A1 (fr) * 2007-07-11 2016-10-19 EC Power A/S Appareil de captation de température pour ballon d'eau chaude
WO2009144710A3 (fr) * 2008-05-26 2012-07-26 Ran Amiran Contrôle du fonctionnement d'un réservoir d'eau chauffé électriquement
ITAN20080052A1 (it) * 2008-11-28 2010-05-29 Merloni Termosanitari Spa Metodo per la minimizzazione dei consumi energetici di uno scaldaacqua ad accumulo tramite logica di apprendimento adattativa
WO2010061264A1 (fr) * 2008-11-28 2010-06-03 Ariston Thermo S.P.A. Procédé pour rendre minimale la consommation d'énergie d'un chauffe-eau à accumulation par une logique d'apprentissage adaptative
EP2233858A3 (fr) * 2009-03-13 2011-07-27 BSH Bosch und Siemens Hausgeräte GmbH Accumulateur d'eau chaude doté d'un système de capteur
EP2395297A1 (fr) * 2010-06-10 2011-12-14 Atlantic Industrie Procédé et dispositif de détermination d'une capacité d'eau mitigée
FR2961295A1 (fr) * 2010-06-10 2011-12-16 Atlantic Industrie Sas Procede et dispositif de determination d'une capacite d'eau mitigee
WO2012069815A3 (fr) * 2010-11-22 2013-06-06 Passivsystems Limited Appareil et méthodes de surveillance d'un ballon d'eau chaude d'un système de chauffage de ballon d'eau chaude pour améliorer son rendement énergétique
RU2628929C2 (ru) * 2011-02-10 2017-08-22 Интергэс Хитинг Эссетс Б.В. Водонагреватель
EP2574893A3 (fr) * 2011-09-28 2014-07-09 Robert Bosch Gmbh Procédé et dispositif de mesure de la température dans un accumulateur thermique
GB2512024A (en) * 2013-01-08 2014-09-24 Baxi Heating Uk Ltd Improvements in water heaters
US9903611B2 (en) 2013-01-24 2018-02-27 Ohad Rubinstein Solar switching system
GB2518365B (en) * 2013-09-18 2015-08-05 Exergy Devices Ltd Apparatus and method for volumetric estimation of heated water
GB2518365A (en) * 2013-09-18 2015-03-25 Exergy Devices Ltd Apparatus and method for volumetric estimation of heated water
CN104729097A (zh) * 2013-12-24 2015-06-24 珠海格力电器股份有限公司 一种热水系统及其显示控制方法、装置
CN104729097B (zh) * 2013-12-24 2018-04-20 珠海格力电器股份有限公司 一种热水系统及其显示控制方法、装置
FR3102836A1 (fr) * 2019-10-30 2021-05-07 Atlantic Industrie Dispositif de chauffage d’eau
CN112377966A (zh) * 2020-10-20 2021-02-19 佛山市南海聚腾环保设备有限公司 一种空气能采暖设备节能方法及系统
CN115615010A (zh) * 2022-12-05 2023-01-17 浙江浩普智能科技有限公司 一种熔盐储热系统电加热熔盐温度控制方法及系统

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