EP3315872B1 - Ballon d'eau chaude et flasque chauffant pour un ballon d'eau chaude - Google Patents

Ballon d'eau chaude et flasque chauffant pour un ballon d'eau chaude Download PDF

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Publication number
EP3315872B1
EP3315872B1 EP17198742.3A EP17198742A EP3315872B1 EP 3315872 B1 EP3315872 B1 EP 3315872B1 EP 17198742 A EP17198742 A EP 17198742A EP 3315872 B1 EP3315872 B1 EP 3315872B1
Authority
EP
European Patent Office
Prior art keywords
hot water
water cylinder
flange
storage tank
opening
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.)
Active
Application number
EP17198742.3A
Other languages
German (de)
English (en)
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EP3315872A2 (fr
EP3315872A3 (fr
Inventor
Andreas Meng
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.)
Stiebel Eltron GmbH and Co KG
Original Assignee
Stiebel Eltron GmbH and Co KG
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
Priority claimed from DE102016012922.0A external-priority patent/DE102016012922A1/de
Priority claimed from DE102016012921.2A external-priority patent/DE102016012921A1/de
Application filed by Stiebel Eltron GmbH and Co KG filed Critical Stiebel Eltron GmbH and Co KG
Priority to PL17198742T priority Critical patent/PL3315872T3/pl
Publication of EP3315872A2 publication Critical patent/EP3315872A2/fr
Publication of EP3315872A3 publication Critical patent/EP3315872A3/fr
Application granted granted Critical
Publication of EP3315872B1 publication Critical patent/EP3315872B1/fr
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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
    • F24H1/18—Water-storage heaters
    • F24H1/181—Construction of the tank
    • F24H1/182—Insulation
    • 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
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • F24H9/001—Guiding means
    • F24H9/0015—Guiding means in water channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/0034—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2270/00—Thermal insulation; Thermal decoupling

Definitions

  • the present invention relates to a hot water storage tank and a heating flange device for a hot water storage tank.
  • Hot water storage tanks usually have thermal insulation in order to isolate the storage tank from the outside and to reduce heat losses.
  • FIG. 1 shows, for example DE 44 18 108 A1 a hot water tank with a water tank in an insulating jacket made of foamed plastic that sits in an outer jacket.
  • the element has a heat-insulating layer made of a soft insulating material, which is provided on the outside with a cover layer made of a material of higher tensile strength.
  • a method for insulating a hot water tank and a hot water tank is off DE 10 2013 016 705 A1 known.
  • the hot water storage tank has an inner container and an outer container with a cavity into which a fine-pored granulate is filled. The cavity is evacuated. A suction nozzle is provided for evacuation. Furthermore, the hot water storage tank has an opening for receiving a heating flange. A connection for recording measured values is provided in the area of the individual opening of the outer container. Furthermore, a gap is provided between the outer container and the inner container between an outer ring and an inner ring, which gap reduces heat transfer to the outside.
  • An electric water heater is off DE 38 05 559 A1 known in which a plastic water tank with a neck-like flange rim is proposed.
  • the flange edge forms an opening through which an electric heating element, which is attached to a flange plate, is inserted and closes the opening.
  • the neck-like flange edge of the container is provided with a thread. Furthermore, the plastic water tank is surrounded by insulation.
  • Thermal insulation as a cladding for a hot water tank is off DE 10 2006 025 875 A1 known in which a polyurethane foam is applied to the outside of a body of the hot water tank. Furthermore, a wadding-like heat-insulating layer is attached to the underside of the container, at least it has wadding-like properties. Furthermore, the heat-insulating layer is provided on the outside with a cover layer and a base and a cover are provided.
  • EP 2 636 968 A1 discloses a storage container and a method for assembling a storage container, in which insulating elements are arranged next to one another in the longitudinal direction of the storage container. Furthermore, a lower inner cover and an upper inner cover are provided. A plurality of lines are connected for loading and unloading the storage container, particularly at the top and bottom. The water in the container is heated by pumping warm water into the container.
  • EP 2 196 742 A2 shows a water heater for an aircraft.
  • Various openings and connections, water outlet valves and a tank bottom with a water inlet are arranged on a tank.
  • the flange plate which represents the tank bottom, carries a radiator, a cold water inlet connection and a hot water tap connection as well as a safety temperature limiter and a temperature sensor.
  • a hot water heater with an electric heater in a water tank and a safety temperature limiter is off DE 29 16 660 known.
  • the safety temperature limiter switches off the heating element when the temperature in the water tank exceeds the maximum water temperature.
  • a metal sheet is arranged which shields at least part of the radiant heat directed from the radiator onto the wall of the water container.
  • a hot water tank with a sacrificial anode and an electric heating element is off U.S. 3,715,566 A known.
  • Various electrical heating elements are passed through a cylindrical wall of the storage tank.
  • a water inlet and a water outlet are passed separately through an upper head of the water reservoir.
  • An electrical protection device to prevent corrosion in the hot water tank for arrangement at an opening in an electrically grounded water tank is off U.S. 3,056,738 A known.
  • the electrical anode is intended to be placed in an opening in the wall of the tank.
  • the connection of an electrical resistance of the anode to the exterior of the housing is also provided.
  • the invention is based on the object of providing a hot water storage tank which has improved thermal insulation and in which the heat losses during operation are reduced.
  • hot water storage tanks also have several openings, for example in order to introduce a cold water inlet, a hot water outlet, a heating element, a temperature sensor, an external current anode and a safety temperature sensor into the interior of the storage tank.
  • the disadvantage of the known storage devices with many openings is that the openings each form a heat transport path from the interior of the container to the outside. Particularly in the case of vacuum-insulated hot water storage tanks, in which any openings are largely not possible, there is thus the need to minimize the disadvantageous heat transport routes from the storage tank to the outside.
  • the invention is thus based on the further object of improving hot water storage tanks to the effect that the insulation of the storage tank is optimized.
  • a hot water storage tank is provided with a storage tank which has an opening and an insulating unit which surrounds the storage tank and has a bottom.
  • the insulation unit has a cold sink on the bottom, which is arranged around the opening.
  • the cold sink enables a flow of heat out of the storage container to be inhibited, since the insulating distance is lengthened. This can reduce heat losses in the storage tank during operation.
  • the cold sink is designed as a circumferential shape, in particular as a circumferential ring around the opening, and is part of the bottom of the insulating unit.
  • the insulating unit furthermore has a casing part and a cover part, the cover part being welded to the casing part.
  • the weld connection is preferably made by means of a fillet weld and / or a butt weld.
  • the insulating unit has an inner container, an outer container and an intermediate cavity which comprises an evacuated insulating medium.
  • the insulating medium is advantageously compressed.
  • a hot water storage tank can also be referred to as a vacuum storage tank.
  • the insulating unit further has a side wall which is arranged between the inner container and the outer container, in particular between the inner container and the bottom, the side wall being arranged around the opening.
  • the side wall is designed in such a way that the opening is widened in an area around the base in order to enlarge a contact surface for a seal. Due to the widening opening, the sealing element can accordingly have sufficient contact surface between the side wall and the heating flange to be inserted into the opening in order to ensure a secure seal.
  • At least the base has or consists of stainless steel.
  • Stainless steel makes it possible to achieve advantageous heat conduction properties.
  • essential parts of the insulating unit have. especially those that come into contact with water, enamelled steel.
  • the hot water tank also has fastening means, in particular screws, which are arranged, in particular welded, radially inside the cold sink on the floor.
  • the fastening means preferably only protrude from the floor and not into it, so that the vacuum insulation of the insulation unit is not impaired.
  • the radiator flange can be fastened to the fastening means, for example by means of nuts.
  • the vacuum accumulator has what is known as a container separation.
  • the inner container has an inner ring and the outer container has an outer ring, a gap preferably being provided between the inner ring and the outer ring to extend a heat transfer path from the inner container to the outer container.
  • This container separation is preferably arranged in an opening area of the vacuum accumulator, that is to say where the accumulator has an opening for receiving a heating flange.
  • the cold sink is implemented by separating the container and serves to reduce the heat transfer to the outside.
  • the cold sink is advantageously to be understood as a container partition. This effect is achieved in that the heat that occurs inside the container is first dissipated via the inner ring and then via the outer ring. This increases the distance over which the heat is dissipated. Thus, less heat arrives at the outer container than if there were a direct connection between the inner container and the outer container. It has been shown that this material separation of the outer container and the inner container leads to lower heat losses. Without this separation, the outflowing thermal energy would heat the lower area of the outer container more strongly, which would have a negative effect on the measurement of the heat losses.
  • the inner ring and / or the outer ring are preferably made of stainless steel.
  • the outer ring is made of steel and the inner ring is made of stainless steel.
  • the inner ring preferably holds the inner container in its position and defines a desired distance between the inner container and the outer container.
  • the hot water storage tank also has a threaded ring which is attached to the bottom of the insulating unit and which surrounds the opening.
  • the threaded ring is preferably welded to the bottom of the insulating unit.
  • the threaded ring can be provided in the area of the cold sink or at a distance therefrom.
  • the threaded ring can be designed, for example, as a plurality of welded-on screws.
  • the hot water storage tank also has a heating flange which can be introduced into the storage tank via the opening and fastened to the insulating unit by means of the threaded ring.
  • a heating flange which can be introduced into the storage tank via the opening and fastened to the insulating unit by means of the threaded ring.
  • the outer container preferably has a wall thickness of up to 3 mm. It preferably has a wall thickness of approx. 0.5 to approx. 2 mm.
  • the inner container has an opening for receiving a heating flange.
  • insulation made from expanded polypropylene (EPP), from expanded polystyrene (EPS), from rigid polyurethane foam or from flexible polyurethane foam is used in the area of the heating flange.
  • EPP expanded polypropylene
  • EPS expanded polystyrene
  • rigid polyurethane foam or from flexible polyurethane foam
  • the invention relates to the idea of providing insulation in which as little air as possible is enclosed within the insulating layer, which air could release heat to the outside by means of convection. As a result of the evacuation process, air is sucked out of the insulating layer so that the air is largely withdrawn from the insulating layer. This significantly reduces heat losses.
  • the hot water storage tank preferably has a capacity of up to approx. 2000 liters, preferably up to 300 liters, preferably between approx. 5 and approx. 150 liters.
  • the hot water storage tank particularly preferably has a capacity of 36 liters.
  • the heating flange device advantageously has a flange element for mounting on the hot water tank, in particular a bottom of the hot water tank, a heating element, a cold water inlet, a hot water return and a temperature sensor.
  • An impressed current anode is also advantageously provided.
  • the heating flange of the water heater thus enables through a clever arrangement of connections of the heating element, the cold water inlet, the hot water return and the temperature sensor as a common flange that all the components can be introduced into the hot water tank through a single opening.
  • the invention thus eliminates the need to provide separate passages into the storage tank of the hot water storage tank for the cold water inlet, the hot water return and / or the temperature sensor. Thermal insulation of the hot water storage tank is thus optimized.
  • the invention enables the temperature sensor to be arranged within the storage container and to determine a temperature of the water precisely.
  • the heating flange device preferably has three heating elements, each with an output of approximately 2 kilowatts.
  • the opening of the storage container is preferably located on the underside. The heating flange device can thus be inserted into the hot water tank from the underside and attached to it.
  • the hot water storage tank is preferably a stratified storage tank.
  • Warm water is advantageously tapped from the top of the storage tank, while cold water flows into the storage tank from below. Accordingly, the cold water inlet only slightly extends into the interior of the storage tank, while the hot water return flow runs through the storage tank from bottom to top in order to be able to absorb water near the upper end of the storage tank.
  • the cold water advantageously flows in.
  • a mixing zone and a HC layer are formed.
  • the storage tank is then completely heated again.
  • Storage systems other than stratified storage systems are also included. Different temperature zones are deliberately set in a stratified tank. This is advantageously implemented in this way in the case of free-standing storage tanks.
  • the temperature sensor is an integral sensor.
  • the integral sensor preferably traverses the storage volume vertically from bottom to top and is set up to measure the water temperature in the entire storage volume.
  • the flange element comprises or consists of stainless steel.
  • the flange element is shaped in such a way that the flange element corresponds to the shape of the cold sink in the bottom of the hot water tank. If, for example, the cold sink is designed as an inwardly curved region of the floor, the flange element has a corresponding curvature in the direction of the curvature of the cold sink. In this way, particularly efficient thermal insulation is achieved through the use of the extension of the heat conduction path through the cold sink, also on the flange element side.
  • the cold water inlet has a mixing limiter.
  • the purpose of the mixing limiter is to divert water flowing in via the cold water inlet in such a way that the layer structure of the stratified storage tank remains intact as possible. For example, if fresh water flows vertically into the container from below, the mixing limiter is set up so that the direction of flow of the water is deflected to the left or right.
  • the mixing limiter is preferably designed as an impact protection or a deflector plate. In all cases, the mixing limiter ensures that the vertical flow of the inflowing cold water is braked or blocked and thus the mixing is reduced.
  • a deflector plate can advantageously be provided, which also serves to limit a vertical flow of the inflowing cold water.
  • the inflowing water should ricochet off an advantageous baffle.
  • the deflector plate is arranged above the cold water inlet instead of the impact protection. Incoming water collides against the baffle and flows into the storage tank between the baffle and the flange element.
  • the baffle is advantageously attached to the flange element, the hot water return, the radiator and / or the cold water inlet pipe.
  • the baffle can advantageously consist of metal or a non-metal, in particular plastic.
  • Metallic baffles are preferably welded or soldered on.
  • Deflection plates made of plastic are advantageously clicked, plugged in or plugged onto the flange element, the hot water return, the radiator and / or the cold water inlet pipe.
  • a metal baffle plate can also advantageously be clicked on, plugged in, or pinned on.
  • the mixing limiter is particularly preferably formed by a curvature of the cold water inlet in the direction of the flange element, such that inflowing water collides against the flange element itself and / or a side wall of the hot water tank below an outlet opening of the cold water inlet. This enables mixing to be prevented in a particularly simple manner without the need to provide additional elements such as deflection plates, for example.
  • the flange element for mounting on the hot water storage tank has insulating spacers, in particular made of plastic, in order to isolate the flange element from fastening means attached to the floor.
  • the spacers are preferably made of hard plastic or a similar material. The actual assembly of the flange element takes place, for example, by means of nuts which fasten the flange element to the fastening means, but without being in direct contact with the flange element, since the spacers are arranged between them.
  • the heating flange device also has a safety temperature limiter. This eliminates the need to provide a separate opening to keep the safety temperature limiter ready.
  • the safety temperature limiter and the temperature sensor are arranged in a common sensor tube.
  • the sensor tube is preferably arranged on the flange and protrudes into the container when the heating flange device is mounted in a hot water tank. All that needs to be done is to seal the sensor tube against the contents of the container or to solder it into the flange plate.
  • the sensor tube can be permanently mounted on the flange. The seal can thus also be provided in a fixed manner. Maintenance and assembly of the temperature sensor and / or the safety temperature limiter is thus easily possible, since the measuring instruments do not need to be sealed with respect to the flange.
  • the heating flange device also has a corrosion protection unit, in particular a magnesium anode or an external current anode.
  • a corrosion protection unit in particular a magnesium anode or an external current anode.
  • an external current anode it is preferably insulated from the heating flange. In this embodiment, no additional opening is necessary in the hot water tank for the corrosion protection unit.
  • the invention is also achieved by a hot water storage tank according to the invention which has a heating flange device according to the invention.
  • the flange element is isolated from the insulating unit by a sealing element arranged between a side wall surrounding the opening and the flange element and by spacer elements arranged between fastening means attached to the floor and the flange element.
  • the interaction of the sealing element and spacer elements enables, on the one hand, a secure sealing of the interior of the hot water tank, so that there is no leakage of water, on the other hand, the spacer elements also ensure a secure hold of the flange element without it being over the water a short circuit can occur because the flange element is electrically isolated from the bottom or the tank of the hot water tank.
  • FIG. 1 shows a hot water tank 1 according to a first example for understanding the invention.
  • the hot water storage tank 1 has an inner container 10 and an outer container 20.
  • a cavity H is provided between the inner container 10 and the outer container 20. If the hot water storage tank 1 is insulated, a flowable or pourable insulating medium 30 is filled in through a filling opening 23 of the outer container 20. Air is drawn off from the cavity H via a suction nozzle 22 and the cavity H is evacuated.
  • a fine filter 220 is arranged in front of the suction nozzle 22.
  • the outer container 20 has an outer ring 21 and the inner container 10 has an inner ring 11.
  • a gap S is provided between the inner ring 11 and the outer ring 21 which reduces heat transfer to the outside. Furthermore, an opening 12 for receiving a heating flange, not shown in detail, is provided on the inner container 10. Optionally, a connection 24 for recording measured values is provided in the area of the filling opening 23 of the outer container 20.
  • FIG. 3 is a detailed view of the hot water tank 1 from FIG Figure 1 shown.
  • the hot water tank 1 has an inner container 10 and an outer container 20.
  • a cavity H for receiving an insulating medium 30 for insulating the hot water tank 1 is provided between the inner container 10 and the outer container 20.
  • the inner container 10 has an opening 12 for receiving a heating flange, not shown in detail.
  • the inner container 10 has an inner ring 11 and the outer container 20 has an outer ring 21.
  • the inner ring 11 and the outer ring 12 are connected to one another in order to connect the inner container 10 and the outer container 20.
  • a gap S is provided between the inner ring 11 and the outer ring 21.
  • FIG 2b shows a further detailed view of the hot water tank 1 from Figure 1 .
  • the container separation between the inner ring 11 of the inner container 10 and the outer ring 21 of the outer container 20 in the area of the opening area 100 is shown.
  • the container separation serves to reduce the heat transfer to the outside. This effect is achieved in that the heat that occurs inside the container is first dissipated via the inner ring 11 and then via the outer ring 21. This extends the distance over which the heat is dissipated, in that the heat is first conducted in direction W1 via the inner ring 11, then in direction W2 to the outer ring 21 and then in direction W3 via the outer ring 21.
  • W1 via the inner ring 11
  • W2 to the outer ring 21 and then in direction W3 via the outer ring 21.
  • a cavity between the inner container 10 and the outer container 20 is provided for receiving an insulating medium 30.
  • FIG 3 shows a schematic sectional view of a hot water tank according to a second example for understanding the invention.
  • the hot water storage tank has a storage tank 200 and an insulation or an insulation unit 300.
  • This insulation or insulation unit 300 can be configured as a vacuum insulation unit.
  • the storage container 200 has an opening 213 at its lower end 212. In this opening 213 z. B. the heating flange 40 can be introduced.
  • the storage container 200 can be configured with an inner container and an outer container.
  • FIG. 13 shows an enlarged partial sectional view of the hot water tank from FIG Figure 3 .
  • the storage container 200 has an opening 213 into which a heating flange can be inserted.
  • a cylindrical ring 212 for example made of stainless steel, is also provided at the lower end.
  • the insulation or the insulation unit 300 of the hot water storage tank can also be made or configured from stainless steel at its base 301.
  • FIG. 5 shows a partial sectional view of a hot water tank according to a first embodiment.
  • the hot water storage tank has a storage tank 200 with a lower end, which can be designed as a cylindrical ring 212, for example made of stainless steel.
  • the ring 212 surrounds an opening 213 into which a heating flange can be inserted.
  • the hot water storage tank according to the first exemplary embodiment corresponds essentially to the hot water storage tank according to the first or second example for understanding the invention and additionally has a cold sink 302 on its bottom.
  • the cold sink 302 can be provided on the bottom 301 of the insulating unit 300 and can be designed, for example, as a circumferential ring 302.
  • the cold sink 302 has a first section 302a, a second section 302b, a third section 302c and a height 302h.
  • the first section 302a can be 5 mm to 500 mm
  • the second section 302b can be 5 mm to 500 mm
  • the third section 302c can be 5 mm to 500 mm.
  • the height 302h of the ring 302 can be, for example, 5 mm to 200 mm.
  • a cold sink can thus be achieved through the design of the bottom of the insulating unit 300.
  • the design of the cold sink inhibits the flow of heat to the outside, since the distance to be covered becomes longer. This leads to an improved storage effect.
  • Figure 6 shows a partial sectional view of a hot water tank according to a second embodiment.
  • the storage container 200 has at its lower end a cylindrical ring 212 which surrounds an opening 213 into which a heating flange can be inserted.
  • An insulator or an insulating unit 300 is provided around the container 200, which can be designed as vacuum insulation, for example.
  • a cold sink 303 which can be designed as a ring, is configured on a floor 301 of the insulation or of the insulator 300.
  • the ring can have a radius of between 5 mm and 100 mm in cross section.
  • Figures 7 to 9 show partial sectional views of a hot water tank according to a third to fifth exemplary embodiment.
  • Figures 7 to 9 essentially correspond to the above first or second exemplary embodiment and illustrate alternative configurations of a cold sink on the underside 301 of the insulating unit 300.
  • Figure 7 shows a cold sink 304 which surrounds the opening 213 in the form of a ring.
  • the cold sink 304 is approximately circular in cross section and shows a tapered connection area with the bottom 301 of the insulating unit 300 compared to the cold sink 303. This configuration enables a further lengthened distance to be covered so that the heat flow inhibition is further increased.
  • FIG. 10 shows a cold sink 305 in the form of corrugation bulges 305a extending inwardly into the insulating unit 300 and corrugation troughs 305b protruding outwardly beyond the base 301.
  • FIG. 10 shows a cold sink 306 that substantially resembles the waveform of FIG Figure 8 cold sink 305 shown corresponds.
  • the wave troughs 306b and wave protuberances 306a are further away from one another in the radial direction outward from the opening 213 in comparison to the cold sink 305.
  • the exact arrangements and spacings of the wave troughs 305b, 306b or the wave flares 305a, 306a can be adapted as required.
  • the cold sinks 305, 306 cannot extend beyond the floor 301 into the insulating unit 300 and can only be provided below the floor 301.
  • the cold sink can also be designed differently, for example have a different shape, as long as it is suitable for inhibiting the flow of heat from the interior of the container to the outside and improving the insulating properties of the insulating unit 300.
  • Mixed forms from the exemplary embodiments of the cold sinks are also conceivable according to the invention.
  • Figures 10 to 14 show schematic partial sectional views of an outer casing of a hot water storage tank according to a sixth to tenth exemplary embodiment. In particular, they show Figures 10 to 14 Different types of joining, such as how a casing part 320 of the insulating unit 300 is connected to a cover part 330 of the insulating unit.
  • the part of the hot water tank can correspond to the hot water tank of the first or second exemplary embodiment.
  • the casing part 320 protrudes upward beyond the cover part 330.
  • a fillet weld 340a in the form of a horizontal T-joint of the cover part 330 is provided for the connection.
  • the cover part 330 extends horizontally beyond the casing part 320 to the outside.
  • a fillet weld 340b is provided for connecting the cover part 330 to the cover part 320, with the cover part 320 being in a T-joint against the cover part 330.
  • cover part 330 and the jacket part 320 are butt-welded, for example a fillet weld 340c designed as a corner seam or corner joint connecting the two parts.
  • the cover part 330 shows an upwardly bent section 330d adjacent to the casing part 320.
  • the upwardly bent section 330d is welded to the jacket part 320 by means of a butt seam 340d.
  • the cover part 330 is bent downwards in the vicinity of the casing part 320 and forms an overlap region 330e.
  • the overlap region 330e is welded to the casing part 320 by means of a weld seam 340e.
  • Fig. 15 shows a schematic sectional view of a hot water tank 1 with a heating flange device 100 according to an embodiment of the invention.
  • the hot water storage tank 1 has a storage shell 2 which surrounds a storage tank 3.
  • the storage shell 2 in turn has an outer wall 20 and an inner wall 10, which are separated from one another by vacuum insulation 16. Via a filler neck 18, the space between the outer wall 20 and the inner wall 10 can be filled with insulating medium, for example, and evacuated.
  • the storage shell 2 has an opening 13 via which a heating flange device 100 can be introduced into the interior of the container.
  • the filler neck can be attached to the storage jacket, in particular in the area of a wall bracket.
  • Various layers of water are preferably formed in the storage container 3, in particular when hot water is withdrawn.
  • the storage container 3 is under pressure and is preferably completely or almost completely filled during operation.
  • a water level 26 is advantageously above a hot water outlet 134.
  • Figures 16a and 16b show enlarged detailed views of the in Fig. 15 shown schematic sectional view of the hot water tank 1.
  • Figure 16a the upper area of the hot water tank 1
  • Figure 16b the lower area of the hot water tank 1 with a large part of the heating flange device 100.
  • the heating flange device 100 comprises three heating elements 110, each with two connections 112.
  • the connections 112 are typical connections for heating elements in hot water storage tanks and protrude downward from the hot water storage tank 1 via a flange element 105.
  • These are preferably the heating elements 110 um heating elements with 2 kW heating output each, with other heating outputs and / or a different number of heating elements 110 also being conceivable.
  • a hot water return 130 protrudes from below through the flange element 105 upwards.
  • a hot water pipe 132 forms an upper part of the water return 130 and is led up through the interior of the storage tank and ends at a hot water outlet 134.
  • a temperature sensor 140 is also shown, which also projects almost or completely through the entire storage container volume, is preferably designed as an integral sensor and can detect a temperature of the water over the entire storage area.
  • Figure 16b a corrosion protection unit in the form of an impressed current anode 150.
  • the impressed current anode 150 is inserted into the interior of the storage container 3 via an opening in the flange element 105.
  • the external current anode 150 is insulated from the flange element 105 by means of an insulation 155.
  • a corrosion protection voltage can thus be applied between the flange element 105 and the impressed current anode 150, which can be connected via a connection 152.
  • the impressed current anode 150 can also be replaced by another corrosion protection unit, such as, for example, a magnesium anode.
  • FIG. 11 shows a further enlarged schematic sectional view of the area of the hot water storage tank 1 as shown in FIG Figure 16b is shown.
  • Fig. 17 the fastening of the heating flange device 100 to the hot water storage tank 1.
  • Fig. 17 shows in detail a threaded ring 40 which is arranged between a bottom 301 of the outer wall 20 of the storage shell 2 and a side wall 19 of the opening 13.
  • the threaded ring 40 is used to fasten the heating flange device 100 to the hot water storage tank 1.
  • the side wall 19 of the opening 13 protrudes downward beyond the bottom 301a of the storage shell.
  • the threaded ring 30 can thus be attached both to the base 301 a and to the side wall 19 of the opening 13 without blocking a region of the opening 13.
  • the threaded ring 40 preferably surrounds the opening 13 and is welded to the bottom 301a and / or the side wall 19 of the opening 13.
  • the heating flange device 100 or in particular the flange element 105 is fastened to the hot water storage tank 1 by providing fastening means 103, in particular screws, between the flange element 105 and the threaded ring 40.
  • a sealing element 109 for example made of plastic, is preferably provided between the flange element 105 and the threaded ring 40.
  • the sealing element 109 seals the interior of the container from the exterior.
  • the flange element 105 can have a ground connection 107, via which the hot water storage tank 1 can be connected to ground.
  • the hot water storage tank 1 has no vacuum insulation. Therefore, in some exemplary embodiments, it can be advantageous to provide a further insulating body, for example made of Styrofoam, plastic or other heat-insulating materials, over the flange element 105 or the entire heating flange device 100 and the threaded ring 40, which allows heat to be transported via the opening 13 from the inside of the container insulates outside.
  • a further insulating body for example made of Styrofoam, plastic or other heat-insulating materials
  • Fig. 18 shows a schematic sectional view of a hot water tank 1 with a heating flange device 100 according to an embodiment of the invention.
  • the hot water tank shown is also the cold water inlet 120, advantageously shown with a mixing limiter in the form of an impact protection 125.
  • the remaining elements are the same as those shown in the previous drawings, and a description thereof is not repeated.
  • an impact protection 125 is provided, which essentially leads to the cold water inlet being closed with a horizontal closure, as a result of which a flow of the inflowing water is braked vertically.
  • Fig. 19 shows schematically and by way of example an impact protection according to the invention according to an exemplary embodiment.
  • the impact protection 125 adjoins or is connected to the cold water inlet 120 and is closed at its upper end with a closure 126. Only a small hole 127 enables a small volume of water to flow upwards directly from the cold water inlet 120. The much larger part of the inflowing water is diverted to lateral openings 129 and thus leaves the cold water inlet 120 or the impact protection 125 horizontally. As a result, mixing of the water in the storage container 30 is kept as small as possible.
  • Other configurations of a mixing limiter are also conceivable.
  • a deflector plate can be provided instead of the impact protection 125, which also serves to limit a vertical flow of the incoming cold water.
  • Figures 20a and 20b each show horizontal sectional views of an exemplary embodiment of the heating flange device 100.
  • Figure 20a shows a sectional view of the heating flange device 100 from above, where going Figure 20b shows a sectional view of the heating flange device 100 from below.
  • the reference symbols of the individual elements correspond to those with reference to FIGS. 1 to 19 used reference symbols that are not repeated here. It should be noted that the arrangement shown is of course only one example of the possible arrangements of the elements in the heating flange device 100. Other arrangements of the connections are also conceivable as long as the geometry of the elements allows the heating flange device 100 to be attached through the opening 13 of the hot water tank 1.
  • a sensor tube is provided in which the temperature sensor 140 and a further, not shown, safety temperature limiter are arranged.
  • the sensor tube may be arranged in place of the temperature sensor 140 shown in the drawings.
  • a separate connection or a separate position can also be provided in the flange element for the safety temperature limiter.
  • Fig. 21 shows a further embodiment of the heating flange 100 schematically
  • Fig. 22 shows schematically a cross section of a further exemplary embodiment of a hot water storage tank 1.
  • the inner container 10 is divided into two parts and connected at a weld seam 351. Both parts of the inner container 10 are made of enamelled steel. Thanks to the enamel, the inner container is corrosion-resistant and heat conduction is reduced.
  • the outer container 20, made of steel in this example, is welded to the base 301 made of stainless steel at a transition area 352.
  • a side wall 19 made of steel is welded at two weld seams 353 and 354 between the inner container 10 and the base 301.
  • the side wall 19, which is designed as a web in this example, is designed as a galvanized and / or painted sheet steel.
  • the side wall 19 is designed as a web 190 followed by a widened section 192.
  • the opening 12 in particular widens, which is indicated by the reference numeral 194 in order to provide a sufficiently large contact surface for the seal between the container and the heating flange device 100 to be inserted into the opening 12.
  • the bottom 301 has a cold sink 307, which in this example has in particular an indentation 307a that extends into the cavity H with an adjoining region 307b that is again extended further outwards.
  • the heat transfer path is thus lengthened and the heat transfer through the cold sink 307 is reduced.
  • Figures 23a and 23b show two views of the bottom 301.
  • the lengthened heat transfer path achieved by the cold sink 307 becomes clear.
  • Figures 24a and 24b show schematically two views of the side wall 19 designed as a web 190 and widened element 192.
  • the widening area 194 of the opening 12 becomes clear here.
  • Fig. 25 shows schematically a view of the in Fig. 22 shown hot water tank 1, in which a Schuflanschvorraum 100 is inserted into the opening 12.
  • the design of the heating flange device 100 essentially corresponds to that of the preceding designs, the flange element 105 being designed as a flange plate made of stainless steel, which adapts to the shape of the cold sink 307 in a particularly suitable manner.
  • fastening elements 309 equipped as screws are arranged circumferentially and around the side wall 9.
  • the fastening means 309 are welded, in particular spot-welded, onto the base plate 301.
  • the flange plate 105 is connected to the base 301 by fastening means 103 designed as nuts.
  • a spacer 104 preferably made of hard plastic, is provided between the screw 309 and the nut 103. As a result, the flange element 105 is electrically isolated from the container.
  • the flange plate 105 is isolated from the container by the sealing element 109 between the side wall 19 and the flange plate 105.
  • the configuration of the sealing element 109 is shown in FIG Figures 26a and 26b shown in more detail in two views.
  • the sealing element 109 has two grooves 109a and 109b which, similar to the principle of a windshield wiper, produce a particularly secure seal when jammed.
  • the secure seal is also ensured by the wide support, which is ensured by the widened area 194.
  • heating elements 110 inlet and outlet pipes 120, 130 are integrated in the heating flange device 100, in particular soldered to the flange element 105 made of stainless steel.
  • the impressed current anode 150 which is shown in Fig. 25 is not visible, on the contrary, is screwed into the flange element in order to be exchangeable.
  • a grounding (not shown) is welded or soldered to the base 301.
  • Figures 27a and 27b show further schematic views of the hot water tank 1 in which in particular the insulation of the flange element 105 with respect to the container by the sealing element 109 and the spacer 104 is visible.
  • Figure 27b also shows in detail the connection of the impressed current anode 150.
  • a seal 154 for sealing against water and an insulation 156 for electrical insulation are provided between impressed current anode 150 and flange element 105.
  • the impressed current anode 150 is connected via a connection 152 and screwed with a nut 158.
  • the actual anode, which protrudes into the interior of the container, can thus be replaced with the heating flange device 100 removed.
  • Figure 27a also shows a configuration of the cold water inlet 120 that differs from the other exemplary embodiments.
  • the fresh water inlet 120 is bent in the direction of the flange element 105 in such a way that the cold water is guided in the direction of the flange element 105 or the side wall 19.
  • the flange element 105 and the side wall 19 accordingly act as a baffle plate in this exemplary embodiment.
  • a plane of the flange element 105 and the water outlet of the cold water inlet 120 accordingly enclose an angle which is smaller than 90 degrees.
  • the Fig. 28 shows this embodiment in further views. It serves to clarify at least one of the aspects discussed above.

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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)
  • Details Of Fluid Heaters (AREA)

Claims (14)

  1. Ballon d'eau chaude (1) comportant un récipient de stockage (3) présentant une ouverture (12), une unité isolante sous vide (2) entourant ledit récipient de stockage (3), le récipient de stockage (3) étant un récipient intérieur (10) et un espace vide (H) de l'unité isolante sous vide (2) étant formé entre ledit récipient intérieur (10) et un récipient extérieur (20), caractérisé en ce que ledit récipient extérieur (20) de l'unité isolante sous vide (2) présente un fond (301) ; un dissipateur de froid (302) étant disposé dans ledit fond (301), autour de ladite ouverture (12) ; des moyens de fixation (103) étant disposés radialement sur l'intérieur du dissipateur de froid (302), sur ledit fond (301), de manière à dépasser uniquement sur l'extérieur dudit fond (301), l'isolation sous vide de ladite unité isolante sous vide (2) n'étant pas compromise et un dispositif à résistance chauffante (100) qui comporte un élément de bride (105) étant monté sur le fond (301) du ballon d'eau chaude (1), et le dispositif à résistance chauffante (100) présentant un élément chauffant (110), une arrivée d'eau froide (120), un retour d'eau chaude (130) et un capteur de température (140).
  2. Ballon d'eau chaude (1) selon la revendication 1, caractérisé en ce que les raccords de l'élément chauffant (110), de l'arrivée d'eau froide (120), du retour d'eau chaude (130) et du capteur de température (140) sont disposés dans l'élément de bride (105) de manière à pouvoir être introduits dans ledit ballon d'eau chaude (1) par l'unique ouverture (12).
  3. Ballon d'eau chaude (1) selon la revendication 1 ou 2, dans lequel le dissipateur de froid (302, 303, 304, 305, 306, 307) est conçu sous une forme périphérique, notamment sous la forme d'une bague périphérique (302, 303) autour de l'ouverture (12), et constitue une partie du fond (301) de l'unité isolante sous vide (300).
  4. Ballon d'eau chaude (1) selon l'une des revendications précédentes, dans lequel l'espace vide (H) situé entre le récipient intérieur (10) et le récipient extérieur (20) présente une couche isolante en matériau isolant comprimé mis sous vide (30).
  5. Ballon d'eau chaude (1) selon l'une des revendications précédentes, dans lequel l'unité isolante sous vide (2) présente en outre une paroi latérale (19) disposée entre le récipient intérieur (10) et le récipient extérieur (20), notamment entre le récipient intérieur (10) et le fond (301), ladite paroi latérale (19) étant disposée autour de l'ouverture (12).
  6. Ballon d'eau chaude (1) selon la revendication 5, dans lequel la paroi latérale (19) est conçue de façon à élargir l'ouverture (12) dans une zone autour du fond (301) afin d'agrandir une surface d'appui pour un joint.
  7. Ballon d'eau chaude (1) selon l'une des revendications précédentes, dans lequel au moins le fond (301) comprend de l'acier inoxydable ou en est constitué, les pièces de l'unité isolante sous vide (2) qui entrent en contact avec l'eau comprenant de l'acier émaillé.
  8. Ballon d'eau chaude (1) selon l'une des revendications précédentes, caractérisé en ce qu'il présente une capacité inférieure ou égale à 36 litres.
  9. Ballon d'eau chaude (1) selon l'une des revendications précédentes, caractérisé en ce que le dispositif à résistance chauffante (100) présente un élément de bride (105) destiné à être monté sur le fond (301) du ballon d'eau chaude (1), un élément chauffant (110), une arrivée d'eau froide (120), un retour d'eau chaude (130) et un capteur de température (140).
  10. Ballon d'eau chaude (1) selon la revendication 9, dans lequel l'élément de bride (105) comprend de l'acier inoxydable ou en est constitué, ledit élément de bride (105) étant de préférence formé de manière à correspondre à la forme du dissipateur de froid (302) du fond (301) du ballon d'eau chaude (1).
  11. Ballon d'eau chaude (1) selon l'une des revendications 9 et 10, dans lequel l'arrivée d'eau froide (120) présente un limitateur de mélange, ledit limitateur de mélange étant de préférence réalisé par une courbure de l'arrivée d'eau froide (120) en direction de l'élément de bride (105) de sorte que l'eau entrante percute ledit élément de bride (105) et/ou une paroi latérale (19) du ballon d'eau chaude (1) en dessous d'une ouverture de sortie de ladite entrée d'eau froide (120).
  12. Ballon d'eau chaude (1) selon l'une des revendications 9 à 11, dans lequel l'élément de bride (105) présente, pour le montage sur ledit ballon d'eau chaude (1), des entretoises isolantes (104), notamment en matière plastique, afin d'isoler ledit élément de bride (105) des moyens de fixation (309) fixés sur le fond (301).
  13. Ballon d'eau chaude (1) selon l'une des revendications 9 à 12, dans lequel le dispositif à résistance chauffante (100) présente en outre un limitateur de température de sécurité et/ou une unité anticorrosion, ledit limitateur de température de sécurité et le capteur de température (140) étant de préférence disposés dans un tube de sonde commun et/ou ladite unité anticorrosion étant de préférence conçue sous la forme d'une anode en magnésium ou d'une anode à courant imposé (150).
  14. Ballon d'eau chaude (1) selon la revendication 13, dans lequel l'élément de bride (105) de l'unité isolante sous vide (2) est isolé par un élément d'étanchéité (109) disposé entre une paroi latérale (19) entourant l'ouverture (13) et ledit élément de bride (105) et par des entretoises (104) disposées entre les moyens de fixation (309) fixés sur le fond (301) et ledit élément de bride (105).
EP17198742.3A 2016-10-27 2017-10-27 Ballon d'eau chaude et flasque chauffant pour un ballon d'eau chaude Active EP3315872B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL17198742T PL3315872T3 (pl) 2016-10-27 2017-10-27 Zasobnik ciepłej wody i kołnierz grzewczy dla zasobnika ciepłej wody

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016012922.0A DE102016012922A1 (de) 2016-10-27 2016-10-27 Warmwasserspeicher und Verfahren zur Dämmung eines Warmwasserspeichers
DE102016012921.2A DE102016012921A1 (de) 2016-10-27 2016-10-27 Heizflanschvorrichtung für einen Warmwasserspeicher und Warmwasserspeicher

Publications (3)

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EP3315872A2 EP3315872A2 (fr) 2018-05-02
EP3315872A3 EP3315872A3 (fr) 2018-08-22
EP3315872B1 true EP3315872B1 (fr) 2021-03-10

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PL (1) PL3315872T3 (fr)

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Publication number Priority date Publication date Assignee Title
EP3705804B1 (fr) * 2019-03-07 2024-05-01 Stiebel Eltron GmbH & Co. KG Appareil domestique et raccord à bride pour un tel appareil domestique
DE102019001629A1 (de) * 2019-03-08 2020-09-10 Stiebel Eltron Gmbh & Co. Kg Warmwasser-Kleinspeicher
DE102021105731A1 (de) * 2021-03-10 2022-09-15 Viessmann Climate Solutions Se Wärmetechnisches Gerät
DE102022133345A1 (de) * 2022-12-14 2024-06-20 Stiebel Eltron Gmbh & Co. Kg Vakuumspeicher und Verfahren zur Herstellung eines Vakuumspeichers

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CH121759A (de) * 1926-07-06 1927-08-16 Kummler & Matter Ag Anordnung an elektrischen Heisswasserspeichern zur Verhinderung von Wärmeverlusten.
US3056738A (en) * 1959-02-02 1962-10-02 Harry C Fischer Impressed current cathodic protection system
US3715566A (en) * 1972-01-24 1973-02-06 Smith Corp A Corrosion guard system for electric water heater
DE2916660A1 (de) * 1979-04-25 1980-11-13 Stiebel Eltron Gmbh & Co Kg Elektrischer heisswasserbereiter
DE3805559A1 (de) * 1988-02-23 1989-08-31 Forbach Gmbh Elektrischer heisswasserbereiter
DE102006025875A1 (de) * 2006-06-02 2007-12-06 Greiner Purtec Gmbh Wärmedämmende Umkleidung für Körper, insbesondere für Warmwasserspeicher
JP5283495B2 (ja) * 2008-12-11 2013-09-04 株式会社ジャムコ 航空機搭載用給湯装置
EP2636968B1 (fr) * 2012-03-07 2015-04-29 Roth Werke GmbH Récipient de stockage et procédé de montage d'un récipient de stockage
DE102013016705A1 (de) * 2013-10-09 2015-04-09 Stiebel Eltron Gmbh & Co. Kg Verfahren zur Dämmung eines Warmwasserspeichers und Warmwasserspeicher

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EP3315872A2 (fr) 2018-05-02
PL3315872T3 (pl) 2021-09-20
EP3315872A3 (fr) 2018-08-22

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