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WO2010004380A2 - Dispositif de chauffage intégré pour chauffe-eau à accumulation - Google Patents

Dispositif de chauffage intégré pour chauffe-eau à accumulation Download PDF

Info

Publication number
WO2010004380A2
WO2010004380A2 PCT/IB2009/005701 IB2009005701W WO2010004380A2 WO 2010004380 A2 WO2010004380 A2 WO 2010004380A2 IB 2009005701 W IB2009005701 W IB 2009005701W WO 2010004380 A2 WO2010004380 A2 WO 2010004380A2
Authority
WO
WIPO (PCT)
Prior art keywords
water
heating device
tank
supplementary heating
chamber
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.)
Ceased
Application number
PCT/IB2009/005701
Other languages
English (en)
Other versions
WO2010004380A3 (fr
Inventor
Claudio Capitanelli
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.)
Thermowatt SpA
Original Assignee
Thermowatt SpA
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 Thermowatt SpA filed Critical Thermowatt SpA
Priority to RU2011105070/06A priority Critical patent/RU2519115C2/ru
Priority to CN2009801276247A priority patent/CN102216693A/zh
Publication of WO2010004380A2 publication Critical patent/WO2010004380A2/fr
Anticipated expiration legal-status Critical
Publication of WO2010004380A3 publication Critical patent/WO2010004380A3/fr
Ceased legal-status Critical Current

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
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
    • F24H1/121—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium using electric energy supply
    • F24H1/122—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium using electric energy supply combined with storage 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
    • 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
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/238—Flow rate
    • 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
    • F24H9/00—Details
    • F24H9/12—Arrangements for connecting heaters to circulation pipes
    • F24H9/13—Arrangements for connecting heaters to circulation pipes for water heaters
    • F24H9/133—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
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
    • F24H9/1818—Arrangement or mounting of electric heating means
    • 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

Definitions

  • the present patent relates to a supplementary heater element able to improve the performance of water heaters, particularly storage water heaters.
  • the invention is therefore part of the sector of sanitary water heating by means of electricity, a sector in which there are currently two types of apparatus: storage water heaters and instantaneous water heaters, each of which has its specific advantages and disadvantages.
  • Storage water heaters have the advantage of distributing large quantities of water at a preset temperature, thereby concurrently meeting the hot water requirement of many users while using a relatively small amount of power (for example, 1200 W for the most common models used in Italy).
  • the instantaneous water heaters have the advantage of instantaneously supplying water at the desired temperature and without limits to quantities, by heating the water only as it is required by the user.
  • the disadvantage is that it uses quite high power levels, even to meet the needs of The disadvantage is that it uses quite high power levels, even to meet the needs of one user at a time.
  • Another disadvantage is the greater difficulty in regulating the temperature when lower flows of water, in respect of the maximum ones, are required, which can be achieved only with a prompt adjustment of the heating power; in the case of electric instantaneous water heaters, whose power can be easily around 10 kW or even 20 kW for a domestic water heater, it is difficult to obtain the on-off of the electric resistance without causing radio interference or power surges. Experts in the sector have long been familiar with the types of water heaters and the related abovementioned characteristics, therefore, it is not necessary to spend extra time on a detailed description.
  • the constituent elements of an electric storage water heater comprise a tank and a flange on which the heating elements are mounted (generally sheathed heating elements), the temperature control means of the accumulated water (generally a thermostat with one or more temperature sensors), inlet and outlet pipes (respectively for cold water from the mains and hot water to the user), and necessary safety and corrosion protection means (such as magnesium anode or electrode for cathode protection).
  • Cold water flows into the tank through an inlet pipe at the bottom of the water heater, while the heated accumulated water is drawn out of the top of the tank through the outlet pipe.
  • 1345037 also includes an accessory kit, mounted on the outside of the storage tank, which acts as a post-heater, being also designed to increase the temperature of the water delivered to the user at the moment of the drawing.
  • the difficulty of this solution lies in the addition cost necessary to buy and install the accessory kit.
  • the object of this invention is to eliminate at least part of the difficulties above, to develop a device that makes it possible to combine the advantages of storage water heaters with instantaneous water heaters, while limiting the respective disadvantages.
  • the purpose of the present invention is to identify a device that makes it possible to reduce the temperature of the water contained in the storage water heater with the resulting decrease in the heat lost, therefore ensuring the user the same performance of a traditional storage water heater, delivering the water at the desired temperature only when actually needed.
  • figure 1 is a cross section view of the tank of a storage water heater, including the supplementary heating device according to the invention
  • figure 2 is a perspective view of the flange of the storage water heater, which mounted inside the supplementary heating device according to the invention
  • figure 3 is a cross section view of the supplementary heating device according to the invention.
  • the number 1 indicates the tank of an electrical storage water heater, equipped with flange 2 designed to close the lower opening of the said tank l.
  • Flange 2 supports a sheath 3.
  • a of a thermostat 3 designed to regulate the heating of the water accumulated in tank 1.
  • the thermostat 3 can be a rod-type, as shown in the appended drawings.
  • regulation of the temperature of the accumulated water in tank 1 can be achieved with an electrical and mechanical heat regulator or an electronic regulator of any known type.
  • the number 4 indicates an electric resistance for heating the water accumulated in tank 1.
  • the water is introduced cold into the bottom of tank 1 by means of a first cold water inlet pipe 5, having an outlet end in correspondence to the bottom of tank 1 and water is drawn out near the top of tank 1 by means of a second pipe 6, having an inlet end at the upper part of tank 1.
  • the second pipe 6 runs essentially in parallel with the walls of tank 1 and ends with a lower end 6.d which powers the supplementary heating device 8 located inside the water heater.
  • the second pipe therefore performs the function of a flow pipe for this supplementary heating device 8, which has a chamber 8. a, preferably of an elongated shape.
  • the second pipe 6 has a lower end section 6.c that crosses most of the chamber 8.a and terminates with an outlet end 6.d pointed toward the lower extremity of the chamber 8. a.
  • the chamber 8.a is created inside a vessel 8.b which represents, practically, the envelope of the supplementary heating device 8. From the chamber 8. a, the water withdrawn exits through a third pipe 7 which has an initial upper section 7.b which crosses most of the chamber 8.a and has an inlet end 7.a pointed toward the top part of the chamber 8. a.
  • the third pipe 7 performs the function of a flow pipe for the chamber 8.a.
  • an electric resistance 9 preferably in either a serpentine or coil shape, which heats the water that crosses the chamber 8. a.
  • the electric resistance 9 is activated, at the moment of the drawing, by a flow sensor device 10.
  • the outlet end 6.d of the second pipe 6 and the inlet end 7.a of the third pipe 7 are arranged so as to maximize the amount of time the water remains in the chamber 8. a and the resulting heating of this water by the electric resistance 9.
  • the water drawn as required by the user must cross the chamber 8. a which, in turn, is connected to the tank 1 only through the pipe 6 and with the exterior only through the third pipe 7.
  • the storage water heater according to the invention is completely identical to other storage water heaters designed and known; in particular, the hydraulic connections at the water inlet and outlet can be identical and in the same usual positions.
  • the chamber 8. a of the supplementary heating device 8, object of the present invention is the cavity of an envelope made up of a vessel 8.b, supported by the flange 2 which acts as the bottom surface.
  • the vessel 8.b is welded to the second pipe 6 or connected by another means of attachment.
  • the third pipe 7 includes a section 7.c external to the water heater and a section 7.b inside of the chamber 8. a, which terminates with the upper hole 7.a, located in the top of the chamber 8. a. Therefore, according to the embodiment illustrated, the water delivered to the user first runs from the bottom to the top of the said chamber 8.a, lapping the electric resistance 9 which, in the case in point, is in a serpentine shape that surrounds this lower section 6.c of the second pipe 6 and the said internal section 7.b of the third pipe 7. Thanks to the supplementary heating device 8, it is possible to maintain the accumulated water in tank 1 at a temperature lower than the temperature desired by the user, as the supplementary heating device 8 carries out the process of heating the water to the usage temperature only when the water is required.
  • serpentine-shaped electric resistance 9 of the supplementary heating device 8 is controlled by a flow sensor device, such as a flow switch or pressure switch, as the water is drawn out.
  • a flow sensor device such as a flow switch or pressure switch
  • Number 10 identifies this flow sensor device which, besides to activate the serpentine-shaped electric resistance 9 of the supplementary heating device 8, can also simultaneously deactivate the resistance 4 of the storage, acting on a switch not shown in the figures, to avoid excessive energy consumption.
  • An advantage of the supplementary heating device 8 is that it makes possible to build a storage water heater, in which the usual electric resistance 4 preheats the water accumulated in the tank 1 to a maintenance temperature lower than the temperature required by the user, while the usage temperature is reached only at the time of delivery, where the additional heat is provided by the supplementary heating device 8.
  • energy consumptions are limited and heat losses inside the tank are reduced thanks to the lower temperature of the water accumulated in the tank, on par with the temperature of the water distributed.
  • the user wanted the water to be delivered at 40 °C and it was heated in the storage only to 35 °C the heat loss to a room temperature of 20 °C would be reduced by 25%.
  • the power necessary to raise the water temperature at washbasin from 35 0 C to 40 °C is approximately 2 kW.
  • an electric storage water heater has been always described in the description, but nothing prevents that the same teachings can be applied to a gas- fired storage water heater in which the means of heating the accumulated water are represented by a gas burner instead of by one or more electric resistances.
  • the vessel 8.b can be constructed in any material suitable to act as an envelope of the supplementary heating device 8, such as metal, plastic, foam or insulating material.
  • a safety thermoprotector to keep under control the temperature of the serpentine-shaped electric resistance 9 of the supplementary heating device 8, in order to avoid reaching excessive temperatures that could cause the water to boil, with the resulting noise.
  • it might also include devices, not shown in the figures, associated with this flow sensor device 10 that, while withdrawing water, also adjust the power of resistance 9, using known means, to control the temperature and bring the water delivered to a preset usage temperature. Since the electric power of resistance 9 is approximately 20% of that of an instantaneous water heater of equal performance, it can be adjusted without difficulty.

Landscapes

  • 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)
  • Fluid Mechanics (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)

Abstract

La présente invention se rapporte à un dispositif de chauffage supplémentaire pour un chauffe-eau à accumulation (8) qui est conçu pour être positionné à l’intérieur d’un chauffe-eau et est conçu pour chauffer l’eau extraite du réservoir (1) uniquement lorsque cela est nécessaire.
PCT/IB2009/005701 2008-07-11 2009-05-19 Dispositif de chauffage intégré pour chauffe-eau à accumulation Ceased WO2010004380A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
RU2011105070/06A RU2519115C2 (ru) 2008-07-11 2009-05-19 Встроенное нагревательное устройство водонагревателя с тепловым аккумулятором
CN2009801276247A CN102216693A (zh) 2008-07-11 2009-05-19 用于储水式热水器的一体加热装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITAN2008U000017 2008-07-11
IT000017U ITAN20080017U1 (it) 2008-07-11 2008-07-11 Dispositivo di riscaldamento integrato per scaldacqua ad accumulo

Publications (2)

Publication Number Publication Date
WO2010004380A2 true WO2010004380A2 (fr) 2010-01-14
WO2010004380A3 WO2010004380A3 (fr) 2014-07-03

Family

ID=41507490

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2009/005701 Ceased WO2010004380A2 (fr) 2008-07-11 2009-05-19 Dispositif de chauffage intégré pour chauffe-eau à accumulation

Country Status (4)

Country Link
CN (1) CN102216693A (fr)
IT (1) ITAN20080017U1 (fr)
RU (1) RU2519115C2 (fr)
WO (1) WO2010004380A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3156739A1 (fr) * 2015-10-14 2017-04-19 Helmut Schmiedbauer-Wenig Réservoir d'eau
CN113188255A (zh) * 2021-05-25 2021-07-30 珠海格力电器股份有限公司 储水加热容器保护装置、方法及储水加热设备

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2664324C1 (ru) * 2017-05-02 2018-08-16 Аубекир Махмутович Байрамуков Накопительно-проточный водонагреватель
US10508830B2 (en) * 2017-06-08 2019-12-17 Rheem Manufacturing Company High efficiency gas-fired water heater
RU2697215C1 (ru) * 2018-08-17 2019-08-13 Алим Аубекирович Байрамуков Термосифонный электроводонагреватель с накопительной емкостью
DE102018127305A1 (de) * 2018-10-31 2020-04-30 Magontec Gmbh Elektroheizerelement mit einem elektrisch betriebenen Heizelement und einer Anode für den kathodischen Korrosionsschutz

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IL70402A0 (en) * 1983-12-07 1984-03-30 Dawidowitch Shmuel Electrical element unit for water heaters
SU1744377A1 (ru) * 1990-07-09 1992-06-30 Е. В. Бурков и В. В. Шереметьев Электроводонагреватель
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CN2821474Y (zh) * 2005-06-23 2006-09-27 美的集团有限公司 一种贮水式电热水器
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FR2897421B1 (fr) * 2006-02-14 2008-12-26 Cotherm Sa Dispositif chauffant regule pour chauffe-eau
CN200972260Y (zh) * 2006-11-24 2007-11-07 特莫瓦特(无锡)电器工业有限公司 电热水器的加热管
CN201050864Y (zh) * 2007-04-10 2008-04-23 陈振圳 一种二次加热的电热水器

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3156739A1 (fr) * 2015-10-14 2017-04-19 Helmut Schmiedbauer-Wenig Réservoir d'eau
CN113188255A (zh) * 2021-05-25 2021-07-30 珠海格力电器股份有限公司 储水加热容器保护装置、方法及储水加热设备

Also Published As

Publication number Publication date
ITAN20080017U1 (it) 2010-01-12
WO2010004380A3 (fr) 2014-07-03
RU2011105070A (ru) 2012-08-20
RU2519115C2 (ru) 2014-06-10
CN102216693A (zh) 2011-10-12

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