EP2294340B1 - Chauffe-eau - Google Patents

Chauffe-eau Download PDF

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Publication number
EP2294340B1
EP2294340B1 EP09749803.4A EP09749803A EP2294340B1 EP 2294340 B1 EP2294340 B1 EP 2294340B1 EP 09749803 A EP09749803 A EP 09749803A EP 2294340 B1 EP2294340 B1 EP 2294340B1
Authority
EP
European Patent Office
Prior art keywords
water
heating element
inlet point
hot water
tank
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.)
Not-in-force
Application number
EP09749803.4A
Other languages
German (de)
English (en)
Other versions
EP2294340A2 (fr
Inventor
Bernd Schröder
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
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 BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP2294340A2 publication Critical patent/EP2294340A2/fr
Application granted granted Critical
Publication of EP2294340B1 publication Critical patent/EP2294340B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F24H1/20—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

Definitions

  • the present invention relates to a water heater according to the preamble of claim 1.
  • a water heater is eg from the DE 814 650 C known.
  • Water heaters for heating water with a water tank are well known in the art.
  • a water inlet is usually provided at the bottom of the tank through which cold water can flow into the tank.
  • a water drain is usually provided, through which the water can leave the tank and be supplied to the user. Since warm water accumulates on the upper side of the tank, such an arrangement ensures that the water at the outlet has the highest temperature. If cold water flows into the tank after heavy hot water has been drawn, a considerable amount of time passes until hot water is available again. If the cold water flows directly into the tank via the water inlet, this can cause turbulences that cause the upper layer of hot water to be swirled with cold water.
  • a singular attachment of a baffle plate to a heating element is for example in the DE814650C shown. Further prior art is known from DE496741C . US2004 / 234255A1 . US4551613 A and from the DE3437255 A1 known.
  • the hot water device which has at least one water tank, a water inlet, a water outlet, a heating element and a means for at least partially covering an inlet point of the water inlet, characterized in that the heating element is connected to the means for at least partially covering the inlet point of the water inlet is, wherein the water is at least partially reflected by the means for at least partially covering the inlet point of the water inlet to the bottom of the water tank.
  • the heating element comprises two tubes extending at least partially parallel to each other.
  • the means for at least partially covering the inlet point is attached to the two tubes of the heating element.
  • this means is provided for covering the inlet point after completion of the water tank is mounted. This usually takes place in that the means for covering the inlet point is mounted together with the heating element. This also makes it possible that a means for covering the inlet point is mounted, the radius of which is greater than the radius of the water inlet. Due to the larger radius, the inflowing water is better reflected, and thus the incoming cold water better separated from the warm water.
  • the means is fastened to the heating element at two locations, undesired twisting, bending or even breaking off of the means for at least partially covering the inlet point of the heating element can be counteracted in particular. Because the agent may be exposed to a considerable flow pressure due to the flow at the inlet point covered by it, which must withstand the means.
  • the tubes extend through a wall of the water tank into the water tank.
  • the reaching into the tank ends of the tubes are preferably connected to each other by a connecting pipe piece, which is particularly preferably U-shaped.
  • the tubes extend from a side wall of the water tank in use into the water tank.
  • the means for at least partially covering the inlet point in the portion in which the tubes are parallel to each other, attached is attached.
  • the heating element is located in the vicinity of the inlet and the incoming water can thus be heated early and thus accelerates the water heating.
  • the means for at least partially covering the inlet point extends substantially in a plane parallel to the plane defined by the parallel pipe sections.
  • the preferred means extends from the bottom of the water tank substantially in a plane above the plane of the heating element section where it is located is attached. This makes it possible that the water already has to pass through the heating element before it is deflected at the center.
  • the heating element has a bottom portion in which portions of the tubes are substantially parallel to the bottom of the water tank, preferably in the lower half of the water tank, more preferably in the lower third of the water tank, more preferably in the lower fifth of the water tank, most preferably in the lower tenth of the water tank, in each case based on the fillable height of the water tank.
  • a particularly favorable heating of the water in the tank through the heating element is possible, u.a. because, due to the temperature-dependent density of the water, cold water generally sinks down and warm water rises.
  • the tubes of the heating element are guided at one point through a wall of the water tank into the water tank, which is farther from the bottom of the water tank than the bottom portion of the heating element.
  • the heating element preferably comprises a section which is perpendicular to the plane of the floor or inclined at least in the direction of the floor in order to bring the bottom section of the heating element to the ground.
  • the means for at least partially covering the inlet point is preferably attached to the portions of the two tubes of the heating element, which run substantially parallel to the bottom of the water tank.
  • the water inlet through which cold water can flow into the tank is usually provided on the tank bottom.
  • the preferred means extends perpendicular to the longitudinal direction of the pipe sections preferably over the entire defined by the two tubes of the portion of the heating element, which is substantially parallel to the bottom of the water tank width, from the outside of the one to the outside of the other pipe section.
  • the means for at least partially covering the inlet point preferably extends only over a part of the section of the heating element which in Substantially parallel to the bottom of the water tank, preferably the part opposite the inlet.
  • the means extends substantially over the entire bottom section of the heating element.
  • the means for at least partially covering the inlet point of the water inlet comprises a metal.
  • This can be provided in a particularly favorable manner durable means for covering the water inlet.
  • the means for at least partially covering the inlet point of the water inlet can be embodied in various forms, e.g. round, elliptical, square, square, square, diamond-shaped or in another form.
  • a preferred means for at least partially covering the inlet point is formed as a plate, particularly preferably as a sheet. It preferably extends substantially parallel to the plane of the opening of the inlet point.
  • a respective guide surface is arranged on at least one, preferably at least two opposite sides, which is angled relative to the plane of the means, preferably perpendicular, and protrudes from this plane, preferably in the direction of the inlet point.
  • the guide surface or guide surfaces are preferably formed integrally with the means for at least partially covering the inlet point.
  • the means for at least partially covering the inlet point on at least two fastening elements which are provided with perforations through which the pipe sections are guided, to which the means is attached.
  • the fastening elements are preferably designed as tongues whose plane extends in each case perpendicular to the plane of the means for at least partially covering the inlet point.
  • the longitudinal axis of the tube section which passes through the respective fastening element preferably extends perpendicular to the plane of the fastening element.
  • the fastener may be attached directly to the means for at least partially covering the inlet or e.g. also be attached to a guide surface.
  • the fastening element is integrally formed with the means for at least partially covering the inlet point and / or the guide surface.
  • the fastening elements are fastened by pressing on their respective associated pipe sections.
  • the fastening element preferably has, adjacent to the through hole, a hollow cylinder which encloses the tube.
  • the hollow cylinder can be advantageously pressed by externally acting forces on the pipe section to secure the means for at least partially covering the inlet point on the pipe.
  • the hollow cylinder is preferably formed integrally with the fastening element. It is preferably made of metal.
  • the hollow cylinder is made of the same material as the tube. This can be counteracted advantageously a release of the attachment due to different thermal expansion coefficients of the materials.
  • the means for covering the inlet point of the water inlet is welded to the wall of the water tank. This ensures a particularly strong and permanent attachment.
  • the means for covering the inlet point of the water inlet is connected to one end of the heating element. This ensures a great creative freedom.
  • the water which is reflected by the means for covering the inlet point of the water inlet, is in direct thermal contact with the heating element. This causes a particularly effective energy yield and a very rapid heating of the water.
  • Fig. 1 shows a water heater 1, which comprises a water tank 2, a water inlet 3, a water outlet 4, a heating element 5 and a means 6 for at least partially covering the inlet point 7 of the water inlet.
  • the water inlet 3 is arranged at the lower end of the water tank 2.
  • the water drain 4 is attached to a very high position, just below the top wall of the water tank. This has the advantage that runs through the water outlet 4 water with the highest temperature, which accumulates in the tank 2 in the upper part of the water tank.
  • the heating element 5 is in this case connected to a means 6 for at least partially covering the inlet point 7 of the water inlet 3. Via a heating wire 9a, the means 6 for at least partially covering the inlet point 7 with the heating element 5 is connected.
  • the heating element 5 comprises a base plate 10, two heating wires 9a and 9b and a sensor 8.
  • the means 6 for covering the inlet point 7 of the water inlet 3 the inflowing water is at least partially reflected to the bottom of the water tank 2.
  • turbulence is avoided, which would lead to the hot water layers located in the water tank 2 above would be swirled with the inflowing cold water.
  • the inflowing water is covered by the means 6 for covering the inlet point 7 of the water inlet 3, wherein the means 6 is in contact with the heating element 5, it is possible that the water is reflected to the bottom of the tank 2, and is heated simultaneously by the heating element 5.
  • the heating element 5 has two heating wires 9a and 9b, via which the heat is transferred.
  • the heating element 5 has a sensor 8, which determines the temperature of the water within the water tank 2, and, if necessary, regulates the heating power.
  • the invention can be aptly described as follows: Water heaters usually have a pipe at their water inlet. This has the disadvantage that the inflowing water flows directly into the center of the tank, and is not directed to the bottom of the tank. To improve coverings are often welded into the tank, here reflect the incoming water to the bottom of the tank. The disadvantage here is that welding of such a cover is possible only via a liquid enamel. This is usually very expensive and time consuming. In addition, it is necessary to select a particularly high-quality steel in order to avoid the formation of fish scales (fish scaling). These fish scales can be caused by the fact that inferior quality steel forms bubbles that penetrate the enamel layer, thus destroying the enamel layer. This destroyed layer of enamel can sometimes take on the appearance of fish scales.
  • fish scaling fish scaling
  • the means for covering the water inlet connected to the heating element it is possible to install the means for covering after completion of the water tank by being introduced together with the heating element in the water tank.
  • the means 6 for covering the water supply point 7 is in contact with the heating element 5, it is possible that the inflowing water flows directly into the means 6 for covering the inlet 7, and is reflected to the bottom of the tank 2. In addition, it can still be heated during this process.
  • the advantages of this device are that a turbulence of the upper hot water layers can be avoided with inflowing cold water.
  • the means 6 for covering the water inlet 7 may be formed in any shapes and dimensions.
  • FIG. 2 shows an embodiment of a heating element 5 of a hot water device according to the invention.
  • a flange 11 on the water tank two parallel tubes 12, 13 of the heating element 5 are guided into the water tank.
  • the tubes are in a section 14, 15 near the flange substantially perpendicular in the direction (in Figures 2 and 3 bottom) of the tank bottom (the tank bottom is in the FIGS. 2 to 4 not shown) and run there in a bottom portion 16, 17 substantially parallel to the tank bottom in the lower tenth of the tank.
  • the ends of the pipes (in Fig. 2 left) are connected by a U-shaped pipe section 18 with each other.
  • the trained as a baffle means 6 for at least partially covering the in FIGS. 2 to 4 not shown inlet point is fixed at two opposite points on the one 16 or other pipe section 17 of the parallel pipe sections 16, 17 of the bottom portion of the heating element 5. It runs parallel to the plane defined by the two pipe sections 16, 17, which in turn runs parallel to the bottom of the water tank and parallel to the opening of the inlet point. It is arranged so that it completely covers the entry point.
  • the baffle plate extends in the direction transverse to the longitudinal extension of the pipe sections 16, 17 of the bottom portion over the entire defined by these pipe sections 16, 17 width from the outside of the one 16 to the outside of the other tube 17. In the direction of the longitudinal extent of the pipe sections extends substantially the same distance in the vicinity of the U-shaped connection 18 of the pipe ends.
  • Fig. 3 As in Fig. 3 is to be seen, at the parallel to the pipe sections 16, 17 extending outer edges of the baffle plate by 90 ° in the direction of the bottom angled guide surfaces 19, 20 are arranged ranging from the baffle plate to the pipe sections 16, 17. At each of the guide surfaces 19, 20 is a right angle to this and the baffle plate extending tongue 21, 22 arranged as a fastener.
  • the tongues 21, 22 extend perpendicular to the longitudinal extent of the pipe sections 16, 17 and are provided with perforations through which the respective pipe section 16, 17 is guided.
  • Fig. 4 best to recognize, adjacent to the through holes short hollow cylinder 23, 24, which enclose the respective pipe section 16, 17.
  • These hollow cylinders 23, 24 can be pressed against the respective pipe section 16, 17 from the outside in order to secure the baffle plate against displacement in the longitudinal direction of the pipe sections 16, 17.
  • Baffle plate, guide surfaces 19, 20 and fasteners with the short hollow cylinders 23, 24 are integrally made of the same material as the tubes 12, 13. Due to the one-piece production, the production can be substantially simplified. Characterized in that the same material is selected, as that of the tubes 12, 13, a release of the attachment by different expansion coefficients of tube 12, 13 and fastener can be counteracted.
  • the system of heating element 5 and means 6 for at least partially covering the inlet point is easy to design and assemble, has a beneficial effect undesirable mixing hot and cold water contrary, advantageously promotes the rapid heating of the water and is securely held by their construction above the inlet point.

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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 (11)

  1. Chauffe-eau (1), comprenant au moins un réservoir d'eau (2), une arrivée d'eau (3), une sortie d'eau (4), un élément chauffant (5) ainsi qu'un moyen (6) destiné à recouvrir au moins en partie un point d'entrée (7) de l'arrivée d'eau (3), l'élément chauffant (5) étant relié au moyen (6) destiné à recouvrir au moins en partie le point d'entrée (7) de l'arrivée d'eau, l'eau étant réfléchie au moins en partie vers le fond du réservoir d'eau par le moyen (6) destiné à recouvrir au moins en partie le point d'entrée (7) de l'arrivée d'eau (3), caractérisé en ce que l'élément chauffant (5) comprend deux tubes s'étendant au moins par section parallèlement l'un à l'autre, le moyen (6) destiné à recouvrir au moins en partie le point d'entrée (7) étant fixé sur les deux tubes de l'élément chauffant (5).
  2. Chauffe-eau (1) selon la revendication 1, caractérisé en ce que l'élément chauffant présente une section de fond dans laquelle des sections des tubes s'étendent essentiellement parallèlement au sol du réservoir d'eau dans le tiers inférieur du réservoir d'eau.
  3. Chauffe-eau (1) selon la revendication 2, caractérisé en ce que le moyen (6) destiné à recouvrir au moins en partie le point d'entrée (7) est fixé sur les sections des deux tubes de l'élément chauffant (5) qui s'étendent essentiellement parallèlement au sol du réservoir d'eau.
  4. Chauffe-eau (1) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un contact thermique est présent entre l'élément chauffant (5) ainsi que le moyen (6) destiné à recouvrir au moins en partie le point d'entrée (7) de l'arrivée d'eau (3).
  5. Chauffe-eau (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le moyen destiné à recouvrir au moins en partie le point d'entrée est réalisé comme plaque qui s'étend de préférence essentiellement parallèlement au plan de l'ouverture du point d'entrée.
  6. Chauffe-eau (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le moyen (6) destiné à recouvrir au moins en partie le point d'entrée (7) présente au moins deux éléments de fixation qui sont munis de perforations à travers lesquelles sont menées les sections de tube sur lesquelles le moyen est fixé.
  7. Chauffe-eau (1) selon la revendication 6, caractérisé en ce que les éléments de fixation sont fixés par pression sur les sections de tube qui leur sont respectivement attribuées.
  8. Chauffe-eau (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le moyen (6) destiné à recouvrir au moins en partie le point d'entrée (7) de l'arrivée d'eau (3) comprend du métal.
  9. Chauffe-eau (1) selon la revendication 8, caractérisé en ce que le moyen (6) destiné à recouvrir au moins en partie le point d'entrée (7) de l'arrivée d'eau (3) est soudé à la paroi du réservoir d'eau (2).
  10. Chauffe-eau (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le moyen (6) destiné à recouvrir au moins en partie le point d'entrée (7) de l'arrivée d'eau (3) est relié à une extrémité de l'élément chauffant (5).
  11. Chauffe-eau (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'eau qui est réfléchie par le moyen (6) destiné à recouvrir au moins en partie le point d'entrée (7) de l'arrivée d'eau (3) est en contact thermique direct avec l'élément chauffant (5).
EP09749803.4A 2008-05-21 2009-05-18 Chauffe-eau Not-in-force EP2294340B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE200810024549 DE102008024549A1 (de) 2008-05-21 2008-05-21 Warmwassergerät
DE202008016887U DE202008016887U1 (de) 2008-05-21 2008-12-19 Warmwassergerät
PCT/EP2009/056013 WO2009141313A2 (fr) 2008-05-21 2009-05-18 Chauffe-eau

Publications (2)

Publication Number Publication Date
EP2294340A2 EP2294340A2 (fr) 2011-03-16
EP2294340B1 true EP2294340B1 (fr) 2015-10-07

Family

ID=41180715

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09749803.4A Not-in-force EP2294340B1 (fr) 2008-05-21 2009-05-18 Chauffe-eau

Country Status (5)

Country Link
EP (1) EP2294340B1 (fr)
CN (1) CN102216694B (fr)
DE (2) DE102008024549A1 (fr)
ES (1) ES2550464T3 (fr)
WO (1) WO2009141313A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016189458A1 (fr) * 2015-05-28 2016-12-01 Donald Gregory Reid Agencement de chauffage pour réservoir d'eau chaude

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE496741C (de) * 1925-07-08 1930-04-25 Naamlooze Vennootschap Fabriek Elektrisch beheizter Warmwasserspeicher mit Zufuehrung des Wassers unter Druck
DE814650C (de) * 1948-12-28 1951-09-24 Gustav Andersen Heisswasserbereiter
US4551613A (en) * 1983-09-12 1985-11-05 Yechiel Yashfe Rapid-heating electric water boiler
DE3437255A1 (de) * 1984-09-25 1986-04-03 Wilhelm & Sander GmbH, 3418 Uslar Wasserspeicher, insbesondere warmwasserspeicher, sowie verfahren zur herstellung eines warmwasserspeichers
US20040234255A1 (en) * 2003-03-07 2004-11-25 Yui George M. Water heating vessel
CN2684084Y (zh) * 2004-03-29 2005-03-09 甘永江 高频感应加热水供暖器

Also Published As

Publication number Publication date
WO2009141313A2 (fr) 2009-11-26
ES2550464T3 (es) 2015-11-10
CN102216694B (zh) 2013-12-25
DE102008024549A1 (de) 2009-11-26
EP2294340A2 (fr) 2011-03-16
DE202008016887U1 (de) 2009-10-15
WO2009141313A3 (fr) 2012-11-15
CN102216694A (zh) 2011-10-12

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