EP0221210A1 - Appareil de chauffage - Google Patents

Appareil de chauffage Download PDF

Info

Publication number
EP0221210A1
EP0221210A1 EP85307281A EP85307281A EP0221210A1 EP 0221210 A1 EP0221210 A1 EP 0221210A1 EP 85307281 A EP85307281 A EP 85307281A EP 85307281 A EP85307281 A EP 85307281A EP 0221210 A1 EP0221210 A1 EP 0221210A1
Authority
EP
European Patent Office
Prior art keywords
fluid
heating
zone
heating device
tube
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP85307281A
Other languages
German (de)
English (en)
Inventor
Ernest Geoffrey Adams
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0221210A1 publication Critical patent/EP0221210A1/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/18—Water-storage heaters
    • F24H1/20—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes
    • 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
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/18—Water-storage heaters
    • F24H1/20—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes
    • F24H1/201—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes using electric energy supply
    • F24H1/202—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes using electric energy supply with resistances
    • 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
    • F24H15/219—Temperature of the water after 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
    • F24H15/281—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
    • F24H15/305—Control of valves
    • F24H15/31—Control of valves of valves having only one inlet port and one outlet port, e.g. flow rate regulating valves
    • 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
    • F24H15/40—Control of fluid heaters characterised by the type of controllers
    • F24H15/407—Control of fluid heaters characterised by the type of controllers using electrical switching, e.g. TRIAC
    • 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
    • F24H9/0005—Details for water heaters
    • F24H9/001—Guiding means
    • F24H9/0015—Guiding means in water channels
    • F24H9/0021—Sleeves surrounding heating elements or heating pipes, e.g. pipes filled with heat transfer fluid, for guiding heated liquid
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/78—Heating arrangements specially adapted for immersion heating
    • H05B3/82—Fixedly-mounted immersion heaters

Definitions

  • GB 2,079,908A describes a steam and water boiler.
  • the specification describes a complex control system for use with a standard immersion heater and water tank. The system enables heated water to be continuously drawn off from the tank at any desired temperature by mixing the heated water with a cold water supply. Another outlet is provided for drawing off steam.
  • GB 1,001,415 there is no way of controlling the quantity of heated water provided in a non-continuous manner.
  • a method and apparatus for heating liquid in a storage tank is described in the specification for GB 2,037,958A.
  • a heating device is provided in the tank for heating the liquid, and a funnel arrangement is provided for improving heat transfer. Again, control of the quantity of heated water in a non-continuous manner is not disclosed or suggested.
  • Another electric water heating system is described in the specification for GB 1,278,105.
  • This specification discloses a water storage tank having a horizontally disposed heating device arranged adjacent the base thereof.
  • the system includes a pump for pumping water through the heating device and a throttle valve for regulating the flow of water.
  • the flow of water through the heating device is continuous while the heating device is in operation.
  • All the heating devices in the known prior art operate on the principle of supplying a fluid continuously to a heating element which heats the fluid.
  • the discharge of fluid from the heating device is either performed continuously or in response to the opening of a manually operated valve.
  • I provide a heating device comprising a fluid heating zone defined by a hollow member and a heating element arranged to heat fluid in said zone characterised by release means actuatable periodically to release a volume of fluid from said zone, wherein the release means is actuated in response to the fluid in said zone reaching a predetermined temperature.
  • the fluid heating zone can be arranged such that fluid circulates within the zone to improve heat transfer from the heating element, and preferably the arrangement is such that the circulation is achieved by convection.
  • the heating element may comprise a heating coil, and advantageously a fluid passageway extends within the heating coil, to facilitate circulation of the fluid. It is particularly advantageous that the heating coil is thermally insulated from the fluid passageway.
  • the heating element may be an electric heating element.
  • the heating element may form a part of a heat exchanger and may be arranged in conjunction with a heat pump.
  • the hollow member comprises a tube, one end of which is sealed, and the other end of which is open and the heating coil is arranged so that the fluid passageway extends axially of the tube.
  • a further tube is desirably provided to define the fluid passageway.
  • the heating element extends to a position adjacent to the open end of the hollow member.
  • the heat transfer can be further improved by the provision of a baffle adjacent the open end of the hollow member.
  • the baffle may be substantially disc-shaped, and may be arranged at one end of the fluid passageway to provide a baffle for fluid flowing through the passageway.
  • the release means desirably comprises a valve, and may be disposed at the sealed end of the hollow member.
  • Advantageously sensing means is provided for sensing the temperature of fluid in the fluid heating zone.
  • the sensing means is adapted to generate a first signal when the fluid in the fluid heating zone is at the predetermined temperature, and is adapted to generate a second signal when the fluid in said zone is below the predetermined temperature.
  • the valve can be arranged to be responsive to the signals generated by the sensing means, so that the valve is opened in response to the first signal and is closed in response to the second signal.
  • the heating device according to the invention is especially useful as an immersion heater and enables fluid in a tank to be heated in an entirely new manner. Furthermore, discharge of fluid from the hollow member can be performed entirely by convection, so that it is not necessary to provide a pump.
  • the invention in another aspect provides a fluid heating system comprising a tank having a fluid storage zone, and a heating device as described above disposed in the storage zone.
  • the heating device enables a volume of water to be periodically discharged to the fluid storage zone from the fluid heating zone.
  • the discharge outlet of the heating device is preferably arranged adjacent the top of the fluid storage zone so that fluid in the storage zone can be heated in discrete layers. Fluid can be drawn into the hollow member of the heating device through the open end which is preferably disposed adjacent the bottom of the fluid storage zone.
  • a heating device in the form of an immersion heater generally designated 1 comprises a hollow tubular member 2 which defines a fluid heating zone 2 d and has a heating element in the form of a heating coil 3 disposed therein.
  • the tube 2 is provided with an open end 2 a and a sealed end 2 b .
  • the sealed end 2 b of the tube 2 is provided with a vent 2 c which serves the purpose of allowing dissolved gases to leave the tube 2 as they are expelled from the fluid during the heating process.
  • the walls of the tube 2 are provided with insulation to minimise heat transfer between the fluid outside the tube 2 and fluid inside the tube 2. This serves to minimise convection currents in the fluid outside the tubular member.
  • An open-ended tube 4 is arranged within the tube 2 so that an annular volume 5 is defined between the outer surface of the tube 4 and the inner surface of the tube 2.
  • the heating coil 3 is arranged within the annular volume 5 and is coiled about the outer surface of the tube 4.
  • the tube 4 provides a fluid passageway 4 a within the coil 3.
  • One end of the tube 4 is arranged adjacent the open end 2 a of the tube 2, while the other end of the tube 4 is arranged adjacent the sealed end 2 b of the tube 2.
  • the tube 4 is held in position by means of support members 6.
  • the sealed end 2 b of the tube 2 comprises a discharge end of the heating device 1.
  • Release means in the form of a valve 10 is provided which can open in order to allow fluid to be discharged from the heating zone 2 d .
  • Sensing means in the form of a thermostat 9 is arranged on the outside of the tube 2, adjacent the sealed end 2 b ; the thermostat 9 is provided with a sensor 9 a for sensing the temperature of the fluid within the annular volume 5. If the temperature of the fluid within the volume 5 reaches a predetermined value, then the thermostat 9 generates a first signal which causes the valve 10 to be opened, thereby permitting fluid inside the tube 2 to leave through the valve 10. The fluid leaves the tube 2 by virtue of its lower density which causes it to rise above the colder fluid outside the member.
  • the thermostat 9 When the temperature of the fluid in the volume 5 is below the predetermined value, the thermostat 9 generates a second signal which causes the valve 10 to be closed thereby preventing the fluid from leaving the zone 2 d .
  • the sealed end 2 b of the hollow member 2 is provided with a connector 11 for connecting the heating device 1 to a support structure such as a tank for fluid.
  • the heating device 1 is shown disposed in a tank 12 having an inlet opening 13 through which fluid can enter the tank, and an outlet opening 14 through which fluid can leave the tank.
  • the tank 12 is provided with a fluid storage zone 12 a in which the fluid, which is typically water, can be stored.
  • the temperature sensors 15 to 19 are connected to a logic circuit 20, which logic circuit is also connected to an operating panel 21.
  • the operating panel 21 allows various functions to be selected by the user: for example the panel could permit the operator to select various quantities of water to be heated and/or to select how long fluid in the tank 12 is to be heated.
  • the thermostat 9 When the temperature of the water within the tube 2 reaches a predetermined value the thermostat 9 generates a first signal which causes the valve 10 to open, whereupon the water within the tube 2 is discharged through the valve 10 by convection.
  • the heating device 1 increases the depth of hot water measured from the top of the tank 12, every time water is discharged from the tube 2 through the valve 10. The amount by which the depth of hot water is increased each time is dependant upon the volume of water which can be held within the tube 2.
  • the temperature sensors 15 to 19 can detect when the level of hot water has reached a particular point, and in combination with the control system shown in Figure 3 make possible the heating of a predetermined quantity of water in the tank 12.
  • the use of the heating device 1 together with the control circuit makes it possible to heat a volume of water to a desired depth and then to maintain the temperature of the water so that water above the desired depth is heated, and water below the desired depth is cold.
  • the tank is preferably a tank used to supply hot water in a domestic water system.
  • the heating device 1 need not be disposed within the tank 12. If desired the heating device 1 can be attached to the outside of the tank 12, and piping can be arranged so that there is fluid communication between the device and the fluid in the tank.
EP85307281A 1984-04-06 1985-10-11 Appareil de chauffage Withdrawn EP0221210A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08408933A GB2156955B (en) 1984-04-06 1984-04-06 Immersion heater

Publications (1)

Publication Number Publication Date
EP0221210A1 true EP0221210A1 (fr) 1987-05-13

Family

ID=10559289

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85307281A Withdrawn EP0221210A1 (fr) 1984-04-06 1985-10-11 Appareil de chauffage

Country Status (2)

Country Link
EP (1) EP0221210A1 (fr)
GB (1) GB2156955B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018223035A1 (fr) 2017-06-02 2018-12-06 National Machine Company Réservoir d'eau chaude et ensemble de chauffage par circulation

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2156955B (en) * 1984-04-06 1988-05-05 Geoffrey Ernest Adams Immersion heater
GB2323658A (en) * 1997-03-26 1998-09-30 Kevin Coppard Liquid heater with mixing device
IL198642A0 (en) * 2009-05-07 2010-02-17 Moshe Avraham An instantaneous water heating unit for insertion into a hot water storage tank
US10921025B2 (en) 2015-07-22 2021-02-16 National Machine Group Hot water tank

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH289319A (de) * 1953-02-20 1953-03-15 Uhlmann Geb Heisswasserspeicher.
FR2050698A5 (fr) * 1969-06-20 1971-04-02 Torginol Ind Inc
DE3021444A1 (de) * 1980-06-06 1981-12-24 Jürgen 4500 Osnabrück Vonhoff Brauchwasserbereitung mittels waermetauscher
GB2156955A (en) * 1984-04-06 1985-10-16 Geoffrey Ernest Adams Immersion heater

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH396247A (de) * 1960-08-26 1965-07-31 Eckerfeld Alfred Elektrisch beheizter Warmwasserbereiter mit Wärmefühler
GB1278105A (en) * 1969-07-21 1972-06-14 Patterson Kelley Co An electric water heating system
GB2037958A (en) * 1978-11-20 1980-07-16 Hawes R A Heating liquid in a storage tank
GB2079908B (en) * 1980-06-23 1984-05-16 Metal Spinners Ireland Ltd Steam and water boiler

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH289319A (de) * 1953-02-20 1953-03-15 Uhlmann Geb Heisswasserspeicher.
FR2050698A5 (fr) * 1969-06-20 1971-04-02 Torginol Ind Inc
DE3021444A1 (de) * 1980-06-06 1981-12-24 Jürgen 4500 Osnabrück Vonhoff Brauchwasserbereitung mittels waermetauscher
GB2156955A (en) * 1984-04-06 1985-10-16 Geoffrey Ernest Adams Immersion heater

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018223035A1 (fr) 2017-06-02 2018-12-06 National Machine Company Réservoir d'eau chaude et ensemble de chauffage par circulation
EP3632181A4 (fr) * 2017-06-02 2020-06-17 National Machine Company Réservoir d'eau chaude et ensemble de chauffage par circulation
US11892198B2 (en) 2017-06-02 2024-02-06 National Machine Company Hot water tank and flow through heating assembly

Also Published As

Publication number Publication date
GB2156955B (en) 1988-05-05
GB2156955A (en) 1985-10-16
GB8408933D0 (en) 1984-05-16

Similar Documents

Publication Publication Date Title
US5293446A (en) Two stage thermostatically controlled electric water heating tank
US4330309A (en) Heat pump water heater
US4458138A (en) Fast recovery electric fluid
US6345769B2 (en) Water heating apparatus with sensible and latent heat recovery
US4350144A (en) Hot water heating system
US6148146A (en) Water heater
US3282468A (en) Hot water supply apparatus
US4818845A (en) Storage type electric water heater having a closed circulation loop provided with a bubble pump
US4593169A (en) Water heater
US4959526A (en) Storage type electric water heater having a closed circulation loop with a bubble pump
EP0221210A1 (fr) Appareil de chauffage
GB2228069A (en) Control of the heat in a thermal store provided by a tank of water
US20040149742A1 (en) System to heat liquids
EP0309199B1 (fr) Distributeur d'eau chaude à ébullition
US4197446A (en) Energy-saving device for domestic water heaters
US4483310A (en) Heat exchanger
GB2237865A (en) Maintaining drinking water at a sufficiently high temperature to avoid contamination
JP3949050B2 (ja) 給湯式暖房装置
US20050188457A1 (en) Electrically heated bathtub
JPS6233259A (ja) 太陽熱温水器における温水の半強制循環装置
JP2954284B2 (ja) 給湯器におけるガス使用量またはガス・水使用量表示方法およびその装置
CN2297670Y (zh) 一种改进的全自动电热开水器
JP2532319B2 (ja) 大能力給湯装置
JPH0733087Y2 (ja) 風呂装置における凍結防止装置
JP2682553B2 (ja) 温水式暖房装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR IT LI NL SE

17P Request for examination filed

Effective date: 19871109

17Q First examination report despatched

Effective date: 19880726

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19900807