EP2295888A2 - Accumulateur d'eau chaude - Google Patents

Accumulateur d'eau chaude Download PDF

Info

Publication number
EP2295888A2
EP2295888A2 EP10171605A EP10171605A EP2295888A2 EP 2295888 A2 EP2295888 A2 EP 2295888A2 EP 10171605 A EP10171605 A EP 10171605A EP 10171605 A EP10171605 A EP 10171605A EP 2295888 A2 EP2295888 A2 EP 2295888A2
Authority
EP
European Patent Office
Prior art keywords
pipe
water heater
storage vessel
inner storage
inlet
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.)
Granted
Application number
EP10171605A
Other languages
German (de)
English (en)
Other versions
EP2295888A3 (fr
EP2295888B1 (fr
Inventor
Hengzhong Hu
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 Bosch und Siemens 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 Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP2295888A2 publication Critical patent/EP2295888A2/fr
Publication of EP2295888A3 publication Critical patent/EP2295888A3/fr
Application granted granted Critical
Publication of EP2295888B1 publication Critical patent/EP2295888B1/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
    • F24H1/181—Construction of the tank
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • 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

Definitions

  • the present invention relates to a water heater or a water heater, in particular a pipe connection of a water heater.
  • the previously known water heaters include an inner storage tank or a hot water tank, a housing enclosing this and a heat insulating layer located between inner storage vessel and housing.
  • This is typically made of a heat-insulating material and can keep most of the heat from the inner storage vessel from the housing. Nevertheless, a part of this heat can be transferred from the inner storage vessel to the housing because there are also necessary connecting parts such as pipe connections between the inner storage vessel and the housing. This heat losses are connected.
  • an inlet and an outlet tube made of metal are welded to the inner storage vessel, which are coupled via pipe connections with external water pipes. Since the pipe joints are mostly made of metal, the heat stored in the inner storage vessel is transferred to the housing via the inlet and outlet pipes as well as the metallic pipe joints.
  • a pipe connection which comprises a base body made of plastic, a metal nut with internal thread and a metal screw with external thread, which are molded in one piece with the plastic base body.
  • the metallic nut is connected to the inlet and outlet tube on the inner storage vessel and the metallic screw to external water pipes.
  • the object of the present invention is to provide a water heater with improved thermal insulation, in particular between storage vessel and housing, which is also easy to manufacture and assemble.
  • a water heater according to claim 1, with an inner storage vessel for receiving water to be heated, an inlet pipe and an outlet pipe, which are connected to the inner storage vessel and for transferring into the inner storage vessel entering or from the inner storage vessel At least at either the inlet pipe or the outlet pipe, an internal thread is formed, a heat source for heating water stored in the internal storage vessel, a pipe joint comprising a heat insulating body and a first, integrally molded therewith metal pipe, wherein at the first metal connection pipe a matched to the internal thread external thread is formed.
  • the pipe connection additionally comprises a second metal connection pipe injection-molded in one piece with the heat-insulating body, on which an external thread coordinated with an external water pipe is formed.
  • the pipe joint comprises a sealing element, with which a seal between the pipe joint and the internally threaded inlet or outlet pipe can be produced.
  • the sealing element ensures a high watertightness at the connection point.
  • the first metal connecting tube has at the end of its external thread a groove in which the sealing element is accommodated.
  • the first metal connecting pipe has in the middle of its external thread a groove in which the sealing element is accommodated.
  • the heat insulating body has a flow channel penetrating the first metal connecting pipe.
  • the flow channel continues to project into the interior of the inner storage vessel.
  • the water heater also comprises a housing enclosing the inner storage vessel and a heat insulating layer located between the housing and the inner storage vessel.
  • the heat insulating body is accommodated at least partially in the heat insulating layer.
  • the water heater next to a hood which encloses the located within the heat insulating layer portion of the planteisolier stressess.
  • the present invention offers the following advantages: The fact that in a pipe connection according to the invention the heat insulating body and the metallic connecting pipe are integrally formed by injection molding, heat transfer via the pipe connection can be prevented.
  • the metal connection pipe with an external thread and the associated inlet or outlet pipe is provided with an internal thread, whereby a thread destruction when welding the inlet and outlet pipe to the inner storage vessel can be avoided.
  • Fig. 1 an embodiment of a water heater according to the invention or water heater is shown.
  • the water heater 100 consists of an inner storage tank or hot water tank 1 for storing heated water, a housing 3 enclosing the inner storage vessel 1 and an inner storage vessel 1 and housing 3, with a foam (eg, polyurethanes) filled réelleisolier für 4.
  • Das inner storage vessel 1 has a substantially cylindrical shape with a cylindrical wall (no reference numeral) and is usually made of ferrous metal such as steel or iron.
  • the water heater 100 is mounted horizontally, that is, the elongated wall 11 of the inner storage vessel extends in the horizontal direction.
  • the water heater 100 for heating cold water includes a heat source that can be made different. Using the example of in Fig.
  • electric Wassererfflers may at one longitudinal end of the inner storage vessel 1, a flange (not shown) may be present, on which an electric heating tube 2 is mounted and protrudes into the water stored in the inner storage vessel.
  • the heating tube may include a high impedance resistance wire with the plus and minus terminals of the resistance wire on the flange and connected to a 220V or 110V AC power supply.
  • the liquid in the inner storage vessel for example, be heated by a combustion chamber arranged outside of this storage chamber in the case of a gas water heater.
  • Fig. 1 can be removed, are formed in the wall of the inner storage vessel 1, an inlet pipe 11 for introducing cold water into the inner storage vessel and an outlet pipe 12 for discharging hot water.
  • the inlet and outlet pipes 11, 12 made of metallic material such as copper and are fixed by welding to the outside of the cylinder of the inner storage vessel.
  • an internal thread 111 On the inside of the inlet and outlet pipe, an internal thread 111 (only indicated once) formed.
  • a pipe joint for inlet pipes 5 and a pipe joint for exhaust pipes 6 are connected to the inlet and outlet pipes 11, 12, respectively.
  • the pipe connection for inlet pipes 5, as in Fig. 2 an inlet heat insulating body 51 and a first, integrally molded therewith, metallic inlet connection pipe 52.
  • the heat insulating body is made of a heat-insulating material such as plastic. Trapped recesses (not marked) are formed at the joint between the first metallic inlet connecting pipe 52 and the inlet thermal insulating body 51, through which the injection molding compound can flow in order to reliably connect the metal connecting pipe and the heat insulating body to one another. On the outer side of those portions of the first metallic inlet connection pipe 52 which are not covered by the inlet heat insulating body, an external thread 521 is provided, at the end of which a groove 522 is formed. In this case, the external thread 521 of the first metallic inlet connection pipe 52 is matched to the internal thread 111 of the inlet pipe 11.
  • the pipe connection for inlet pipes 5 comprises a sealing element 54, which is designed here as an O-ring and engages in the groove 522 of the first metallic inlet connection pipe 52.
  • the sealing element 54 is pressed between inlet pipe 11 and pipe joint for inlet pipes 5 such that there is a secure seal therebetween.
  • the pipe joint for inlet pipes 5 additionally includes a second metallic inlet port pipe 53 integrally molded with the inlet heat insulating body 51 and located at an end opposite to the first metallic inlet port pipe 52 for connection to an external water pipe.
  • the second metallic inlet connection pipe like the first metallic inlet connection tube 52, is constructed and also provided with a sealing element.
  • in the inlet heat insulating body 51 there is disposed an inlet flow passage 511 penetrating the first and second metallic inlet connection pipes 52, 53, through which water can be introduced from the external water pipe into the inner storage tank.
  • the pipe joint for exhaust pipes 6 is constructed similarly to the pipe joint for intake pipes 5.
  • the first metallic outlet connecting pipe 62 has an external thread 621 which is matched to an internal thread (not designated) of the outlet pipe 12 , Also at the end of the external thread 621 of the first metallic outlet connection pipe 62, a groove 622 is provided, which serves to receive a sealing element 64 in order to ensure a seal between outlet pipe 12 and pipe connection for outlet pipes 6.
  • the second metallic outlet connection pipe 63 and the sealing element arranged thereon are constructed in the same way as the first metallic outlet connection pipe 62 or its sealing element, so that no further details are given in detail.
  • FIG. 4 Another embodiment of a pipe joint for inlet pipes is shown.
  • the pipe connection shown here for inlet pipes 7 has a substantially similar structure as the embodiment described above. That is, it also consists of an inlet saucosity 71, a first and a second metallic inlet connection pipe 72, 73. The difference is in particular that in the middle of the external thread 721 (only indicated once) of the first and second metallic inlet connection pipe 72, 73 a Groove 722 is formed, in which a sealing element 74 (only indicated once) is added. With such a configuration, the sealing effect against a sealing element located at the end of an external thread can be realized more easily.
  • FIG. 5 a further embodiment of a pipe connection for exhaust pipes is shown.
  • the pipe connection shown here for outlet pipes 8 has a substantially similar structure as the embodiment described above. That is to say, it also consists of an outlet heat insulating body 81, a first and a second metallic outlet connection pipe 82, 83. The difference lies in the fact that in the middle of the external thread 821 (only indicated once) of the first and second metallic outlet connection pipe 82, 83 a Groove 822 is formed, in which a sealing element 84 (only indicated once) is added. With such a configuration, the sealing effect can be compared to a sealing element located at the end of an external thread easier to realize.
  • Fig. 1 As can be seen, the pipe connection for inlet pipes 5 and the pipe connection for outlet pipes 6 are at least partially received in the heat insulating layer 4 after being installed in the inlet and outlet pipes 11, 12, respectively. These sections of the pipe connections are enclosed by the foam and thus reliably fixed in the housing.
  • Fig. 6 another embodiment of the water heater according to the invention is shown, which differs from the embodiment described above in particular in that on the unit of inlet pipe 11 and pipe connection for inlet pipes 5 and the unit of outlet pipe 12 and pipe connection for outlet pipes 6 each have a circumferential hood. 9 is appropriate.
  • the hood 9 is made of heat-insulating material such as expanded polystyrene (EPS) and has a substantially cylindrical receiving space (not designated) for receiving the inlet pipe 11 and the pipe joint for inlet pipes 5 and the outlet pipe 12 and the pipe connection for outlet pipes 6.
  • EPS expanded polystyrene
  • a foam This can prevent molten foam from flowing into the receiving space before the formation of a foam layer.
  • the heat insulating body and the metallic connecting pipe are integrally formed by injection molding, a heat transfer via the pipe connection can be prevented.
  • the metal connection pipe with an external thread and the associated inlet or outlet pipe is provided with an internal thread, whereby a thread destruction when welding the inlet and outlet pipe to the inner storage vessel can be avoided.
  • the heat insulating body is both heat and electricity insulating, so that the charges possibly applied to the inner storage vessel can not be transferred to the housing. In this way the security is increased.
  • the pipe joint according to the invention may be in an inlet pipe or at a Outlet tube can be used. Further, only on the inlet pipe connected to the inlet or outlet tube (the first metallic inlet or outlet connection pipe) may be an external thread, while the opposite, connected to an external water pipe metal connection pipe (the second metallic inlet and outlet connection pipe) after as before provided with an internal thread. In addition, it is also possible to dispense with the second metallic inlet and outlet connecting pipe if the external water pipe consists of plastic, wherein an external thread is provided directly on the heat insulating body.

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)
  • Heat-Pump Type And Storage Water Heaters (AREA)
EP10171605.8A 2009-08-03 2010-08-02 Accumulateur d'eau chaude Not-in-force EP2295888B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009202340125U CN201497159U (zh) 2009-08-03 2009-08-03 热水器

Publications (3)

Publication Number Publication Date
EP2295888A2 true EP2295888A2 (fr) 2011-03-16
EP2295888A3 EP2295888A3 (fr) 2014-01-01
EP2295888B1 EP2295888B1 (fr) 2016-03-23

Family

ID=42440364

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10171605.8A Not-in-force EP2295888B1 (fr) 2009-08-03 2010-08-02 Accumulateur d'eau chaude

Country Status (2)

Country Link
EP (1) EP2295888B1 (fr)
CN (1) CN201497159U (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112794462A (zh) * 2021-01-13 2021-05-14 青岛澳柯玛生活电器有限公司 一种“滤+”阻垢装置及电热水器

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115143627B (zh) * 2021-03-31 2025-11-04 青岛经济技术开发区海尔热水器有限公司 内胆组件及电热水器
CN115247889A (zh) * 2021-04-28 2022-10-28 青岛经济技术开发区海尔热水器有限公司 扁平内胆及电热水器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1124819A (fr) * 1954-05-19 1956-10-18 Thomson Houston Comp Francaise Perfectionnements aux chauffe-eau
US3343565A (en) * 1963-12-20 1967-09-26 Gen Electric Domestic appliance
US3563572A (en) * 1969-06-23 1971-02-16 Johns Manville Composite coupling for insulated high temperature fluid carrying conduits
WO2005080852A1 (fr) * 2004-02-09 2005-09-01 Cho Bong-An Systeme de raccords de tuyauterie

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112794462A (zh) * 2021-01-13 2021-05-14 青岛澳柯玛生活电器有限公司 一种“滤+”阻垢装置及电热水器

Also Published As

Publication number Publication date
EP2295888A3 (fr) 2014-01-01
EP2295888B1 (fr) 2016-03-23
CN201497159U (zh) 2010-06-02

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