EP1624259A2 - Chauffe-eau instantané - Google Patents

Chauffe-eau instantané Download PDF

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Publication number
EP1624259A2
EP1624259A2 EP05016631A EP05016631A EP1624259A2 EP 1624259 A2 EP1624259 A2 EP 1624259A2 EP 05016631 A EP05016631 A EP 05016631A EP 05016631 A EP05016631 A EP 05016631A EP 1624259 A2 EP1624259 A2 EP 1624259A2
Authority
EP
European Patent Office
Prior art keywords
rear wall
housing
component material
electric heater
sealing
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
EP05016631A
Other languages
German (de)
English (en)
Other versions
EP1624259A3 (fr
EP1624259B1 (fr
Inventor
Günter Henke
Michael Grobe
Wolfgang Heise
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=35229660&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1624259(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Stiebel Eltron GmbH and Co KG filed Critical Stiebel Eltron GmbH and Co KG
Priority to PL05016631T priority Critical patent/PL1624259T3/pl
Publication of EP1624259A2 publication Critical patent/EP1624259A2/fr
Publication of EP1624259A3 publication Critical patent/EP1624259A3/fr
Application granted granted Critical
Publication of EP1624259B1 publication Critical patent/EP1624259B1/fr
Active 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
    • F24H9/00—Details
    • F24H9/02—Casings; Cover lids; Ornamental panels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/101—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply
    • F24H1/102—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply with resistance

Definitions

  • the present invention relates to an electric heater, in particular a water heater.
  • DE 696 03 389 T2 shows a gas burner, which has an anti-noise cavity to avoid unwanted operating noise, which counter-noise with opposite phase to the unwanted operating noise for a particular frequency to be absorbed.
  • an electrical building services device with a housing wherein the rear wall of the housing has a cable entry grommet.
  • the rear wall of the housing and the cable entry grommet are integrally formed of two different material components, which are manufactured in a two-component injection molding process.
  • the material of the cable entry grommet is a soft flexible material, while the back wall of the housing is made of a rigid material.
  • EP 0 962 723 A1 discloses a domestic appliance, in particular an electric instantaneous water heater with a rear wall, which is designed as a basic carrier, known, wherein the rear wall is attached to a wall before other components of the water heater, such as a radiator, electrical circuits or the like are attached thereto. After installation of the various technical components of the water heater usually a cover is attached accordingly. On the back wall, a soft flexible insert can be injected.
  • an electric heater in particular a water heater, which has a housing rear wall made of a hard component material.
  • At this rear wall further elements of a soft component material are further molded.
  • These elements comprise at least two of the following elements: a housing rear wall sealing member opposite a cap, a flow path decoupling member from the rear wall of the housing, and a cable grommet sealing member in the rear wall of the housing.
  • the housing of an electric heater By injecting the soft component material elements on the rear wall of the housing made of a hard component material, the housing of an electric heater can be produced in a cost effective manner and also additional functions can be realized.
  • the present invention is based on the idea to use soft and hard component material both for suspension and for sealing in a housing construction of a water heater. Thanks to the two-component injection molding process, elements made of hard and soft component materials can be easily and inexpensively reduced to a few Finished process steps. Further, various elements of the water heater, which were previously manufactured individually and then assembled, can now be integrated by means of the two-component injection process in or on the rear wall, which proves to be less expensive than separate components.
  • a housing of a water heater is shown in each case.
  • At least part of the rear wall is made in one piece from a plastic.
  • two different plastic components namely a soft component material and a hard component material used.
  • the rear wall is predominantly made of the hard component material and only in some places the soft component material is arranged or molded.
  • the soft and hard component material can be manufactured in successive operations in the same injection mold.
  • a portion of a housing of hard component material is provided with molded-on elements of soft component material.
  • the rear wall can be injection-molded in a two-component injection molding method which is known per se, wherein the casting mold used for this purpose is designed such that injection molding of further components from soft component material is ensured.
  • Fig. 1 shows a partial sectional view of a housing of a water heater according to a first embodiment.
  • the housing 1 of a water heater is typically fixed by means of its rear wall 1 a fixed to which other components of the water heater can be mounted.
  • the water heater is connected via a water supply line and a water drain line to the water network.
  • the edge 2 and the mouth edge 1b of the rear wall 1a is provided with a sealing lip 10 or 10a.
  • the rear wall 1 a is made of a hard component material in an injection molding process.
  • the sealing lip 10, 10a is preferably made of a soft component material.
  • the rear wall 1a and the sealing lip 10, 10a are manufactured in a two-component injection molding process, so that the sealing lip 10, 10a is sprayed onto the rear wall 1 a. More precisely, the sealing lip 10, 10a is molded onto the edge 2 of the rear wall 1 a. To increase the surface between the edge 2 and the sealing lip of the edge 2 may be configured convex. To improve the sealing effect to the cap of the water heater, the sealing lip has a curvature to the outside. In order to simplify the production of the sealing lip 10, at least one defined edge 2a of the edge 2 of the rear wall of the flow heater is left free, so that a corresponding injection molding tool can begin there.
  • the sealing lip 10 may be arranged along the entire circumference of the edge of the rear wall 1a. Alternatively, the sealing lip may also be arranged only in sections at the edge of the rear wall 1a.
  • the sealing lip 10 serves to seal a cap of the water heater with the rear wall 1 a of the water heater.
  • the injection-molded sealing lip made of a soft component material ensures good deformability and easy releasability of the sealing lip.
  • Fig. 2 shows a partial sectional view of a housing 1 of a water heater according to a second embodiment.
  • a sealing lip 10 as shown in FIG. 1 is attached to an edge 2 of the rear wall 1 a.
  • the rear wall 1 a is provided with at least one cable grommet 20.
  • the cable grommet 20 is made of a soft component material and molded onto the rear wall 1 a. This is preferably done in a two-component injection molding process.
  • the length of the cable grommet is preferably configured such that it extends beyond the rear wall 1 a outwards.
  • the cable grommet 20 is provided with a cylindrical wall 21 which tapers downwardly.
  • the cable grommet 20 may at its one end an inwardly directed bulge 22 have.
  • an improved introduction of the electrical cables for the water heater is achieved.
  • FIG. 3 shows a section of a continuous flow heater according to a third exemplary embodiment.
  • a rear wall 1a is shown with a sealing lip 10 of a water heater.
  • a water flow path 31 of the water heater is provided.
  • a bearing 30 is provided for the flow path 31.
  • This bearing 30 is preferably made of a soft component material and produced by means of a two-component injection molding process together with the rear wall 1 a.
  • the bearing 30 can also be made separately and plugged via jib 33 into corresponding pockets 34 in the rear wall 1 a and thus connected to the rear wall 1 a.
  • the flow path 31 is attached to the bearing 30.
  • the flowpath 31 may also be connected to the bearing 30 in other conventional manner.
  • a soft component material for the bearing 30 or the pockets 34 and cantilever 33 By using a soft component material for the bearing 30 or the pockets 34 and cantilever 33, a good acoustic decoupling of the unwanted noise generated in the flow path 31 can be achieved.
  • a further element 39 (not shown) made of a soft component material between the other end of the water flow path 31 of the water heater and the rear wall 1 a can be provided.
  • an element 39 made of a soft component material an acoustic decoupling of the water flow path 31 and the water supply line from the rear wall 1 a can be achieved. This is particularly advantageous in that the noise generated in the flow path 31 can not be transmitted to the rear wall 1 a by means of structure-borne noise.
  • the provision of the bearing 30 and the element 39 of soft component material between the water flow path 31 and the water supply line leads to a reduction of the perceived as unpleasant noises in a water heater.
  • the rear wall 1a of the flow heater has a sealing lip 10, a cable grommet 20, a flow path 31 and a bearing 30 with boom 33 and pockets 34 for the flow path 31.
  • the rear wall 1 a further has two holes 40, which may be configured oval or as a slot.
  • the two holes 40 are closed to the back of the rear wall 1 a back substantially by a soft component material 42. This soft component material is injected in a two-component injection molding process to the rear wall 1 a.
  • a tensioning hook 41 is shown, which is located in one of the two holes 40.
  • the two holes 40 together with the clamping hook 41 serve for fastening or mounting the rear wall 1a on a wall.
  • the rear wall 1 a For mounting the rear wall 1 a at least one screw is fastened to a wall, wherein one end of the screw protrudes with a thread or a knurl from the wall. The rear wall 1 a is then adjusted so that the protruding from the wall end of the screw extends from the outside through the soft component material 42 into one of the holes 40.
  • the soft component material 42 advantageously has in the longitudinal direction of a thin spot, which tears when the screw is inserted through.
  • the clamping hook 41 in this case has an end which can be inserted over the projecting out of the wall end of the screw.
  • the clamping hook 41 on the screw in the wall 40 may be provided on the inner walls of the holes preferably a soft component material, so that the clamping hook 41 rotates by folding into the soft component material and thus a locking effect is achieved.
  • the open end 43 of the clamping hook 41 may be grooved or toothed, so that the hook can be better secured to a screw in the wall. Since the two holes 40 are closed by a soft component material 42, a fastening of the rear wall with a corresponding seal at the holes 40 can take place.
  • FIG. 5 shows a perspective sectional view of a flow heater according to a fifth embodiment.
  • the holes 40, the collet 41 and the soft component material 42 for closing the holes 40 are shown.
  • latching hooks 50, 52 are shown, wherein the latching hook 52 is embedded in a U-shaped soft component material 51.
  • This soft component material serves for the suspension of the latching hook 52 and is preferably sprayed onto the rear wall 1 a in a two-component injection molding process.
  • the arrangement of the latching hooks 50, 52 serves for example for receiving a Buchsenklemm advisor. In conventional latching hooks for receiving a Buchsenklemm advisor spring action was achieved only by the latching hook 50, but without the soft component material 51 by the material is cut around the latching hook 52 around.
  • the sealing effect of the rear wall is further improved, since the cut-free area around the latching hook is filled with soft component material.
  • the thickness of the soft component material 51 the locking effect can be further adjusted. The thicker the soft component material 51 is configured, the harder the latching hook 52 can be deformed downwards. In the assembled state, d. H. If the female terminal strip is attached appropriately, the latching hook 52 has no voltage. Between ribs 53, the spring action is influenced by the thickness of the soft component material 51. The ribs 53 are used for filling soft component material 51.
  • Fig. 6 shows a plan view of a water heater according to the sixth embodiment.
  • a chamber 60 for receiving components, such as radio transmitter 61 and / or instructions / descriptions provided.
  • the chamber 60 has fastening elements 62, which are preferably made of soft component material in a two-component injection molding process and injection-molded onto the rear wall.
  • the components, such as radio transmitters 61 are press-fitted in the chamber.
  • the soft component material deforms when inserting the components and holds them firmly.
  • Fig. 7 shows a schematic plan view of a lower part 70 of a water heater according to a seventh embodiment.
  • a water supply pipe 71 and a hot water discharge pipe 72 having the corresponding ports 71 a, 72 a are shown.
  • sealing plugs 75 which may be used to seal the terminals 71a, 72a and are preferably made of a soft component material.
  • These sealing plugs 75 are injection-molded by means of an injection molding process on the rear wall 1 a or an intermediate wall. After the function and quality inspection in the factory, there may still be water in the flow path, which may leak later. By attaching the sealing plug 75 to the terminals 71 a, 72 a, however, such leakage can be prevented.
  • two panels 76 are shown, which can also be molded by means of the injection molding process on the rear wall 1 a or the intermediate wall.
  • These shutters 76 are provided in the event that the water supply lines have been laid as surface-mounted lines.
  • two recesses are broken or cut out of the cover or the cap of the water heater, so that the surface-mounted pipes can be connected to the water heater accordingly.
  • the baffles 76 which are preferably made of a soft component material, are then inserted into the cap so that the surface-mounted water supply lines can be passed through the hole in the baffle and connected accordingly.
  • the fact that the panels are made of a soft component material, they are good for further sealing the cap of the water heater.
  • FIG. 8 shows a further schematic top view of a lower part 70 of a continuous flow heater according to the seventh embodiment of FIG. 7.
  • a further cable grommet 81 which is made of a soft component material and is designed as a removable cable grommet. At least a portion of the cable grommet 81 is integrally connected to the rear wall 1a of the water heater.
  • This removable cable grommet serves the assembly simplification. The cable grommet is removed during assembly, being at least partially connected to the rear wall, the rear wall is adjusted and attached to a wall, and the cable grommet can be reused.
  • the cable grommet 81 has an edge 82 made of hard component, while the actual hopper 83 is made of soft component. The edge 82 is preferably latched to the rear wall 1 a.
  • a noses or hooks can be provided from a hard and / or soft component material, in which the cap of the water heater can be mounted during assembly, repair or diagnostic work.
  • the provision of noses or hooks proves to be advantageous in that the fitter can always hook the cap in a designated place.
  • the sealing lip 10a described in a first embodiment of the invention may also or additionally be provided on the outside of the rear wall.
  • the production and configuration of the sealing lip 10a corresponds to the production and design of the sealing lip 10 according to the first embodiment.
  • the provision of a sealing lip 10a on the outside of the rear wall of a water heater enables the rear wall to be sealed off from the wall so that less moisture can penetrate into the instantaneous water heater.
  • a fitter can partially saw off a lower part 70 of the rear wall and carry out the installation and then fix the sawn-off part by means of connecting elements again.
  • the connecting elements can be designed substantially H-shaped.
  • the connecting elements can be molded onto the rear wall 1 a or on the rear wall portion 70 of the water heater. If necessary, they can be removed, for example, by kinking and used to attach the sawed off part of the lower part 70 of the rear wall. Is not a back wall conclusion necessary, so the molded fasteners affect the installation of the water heater no further.
  • a bag or sealing flap 90 may further be provided for covering the controls.
  • the pocket or the sealing flap 90 is preferably molded from soft component material in a two-component injection molding process on the lower part of the intermediate wall 91.
  • the sealing flap 90 preferably has the shape of a blade and is preferably laterally equipped with a fold 92. It thus engages in the recess 93 engaging housing or device parts. If these are not present, the sealing flap 90 lays against a cap (not shown) from the inside and seals it.
  • sealing lips 94 are molded in two-component technology on the intermediate wall, which abut and seal against the device cover or cap from the inside.
EP05016631A 2004-08-05 2005-07-30 Chauffe-eau instantané Active EP1624259B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05016631T PL1624259T3 (pl) 2004-08-05 2005-07-30 Podgrzewacz przepływowy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004037965A DE102004037965A1 (de) 2004-08-05 2004-08-05 Durchlauferhitzer

Publications (3)

Publication Number Publication Date
EP1624259A2 true EP1624259A2 (fr) 2006-02-08
EP1624259A3 EP1624259A3 (fr) 2010-11-03
EP1624259B1 EP1624259B1 (fr) 2012-01-11

Family

ID=35229660

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05016631A Active EP1624259B1 (fr) 2004-08-05 2005-07-30 Chauffe-eau instantané

Country Status (4)

Country Link
EP (1) EP1624259B1 (fr)
AT (1) ATE541164T1 (fr)
DE (1) DE102004037965A1 (fr)
PL (1) PL1624259T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2489950A1 (fr) * 2011-02-21 2012-08-22 Gerdes OHG Dispositif de raccordement pour un chauffe-eau instantané
EP2154445A3 (fr) * 2008-08-14 2016-05-18 BSH Hausgeräte GmbH Dispositif de fixation d'un chauffe-eau électrique instantané
CN105805949A (zh) * 2014-12-30 2016-07-27 青岛经济技术开发区海尔热水器有限公司 一种热水器前壳和装饰件的装配结构及热水器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008013725B3 (de) 2008-03-11 2009-09-17 Stiebel Eltron Gmbh & Co. Kg Elektrisches Haustechnikgerät

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4648766A (en) * 1985-12-09 1987-03-10 Phillips Plastics Corporation Plastic fastener for detachably mounting a panel on a support member
EP0986155A1 (fr) * 1998-09-11 2000-03-15 BSH Bosch und Siemens Hausgeräte GmbH Appareil domestique électrique avec entrée de câble pointu
DE19845859A1 (de) * 1998-10-05 2000-04-06 Bsh Bosch Siemens Hausgeraete Elektrisches Haustechnikgerät mit Trennwand
DE10057034A1 (de) * 2000-11-17 2002-05-29 Stiebel Eltron Gmbh & Co Kg Heißwassergerät

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4648766A (en) * 1985-12-09 1987-03-10 Phillips Plastics Corporation Plastic fastener for detachably mounting a panel on a support member
EP0986155A1 (fr) * 1998-09-11 2000-03-15 BSH Bosch und Siemens Hausgeräte GmbH Appareil domestique électrique avec entrée de câble pointu
DE19845859A1 (de) * 1998-10-05 2000-04-06 Bsh Bosch Siemens Hausgeraete Elektrisches Haustechnikgerät mit Trennwand
DE10057034A1 (de) * 2000-11-17 2002-05-29 Stiebel Eltron Gmbh & Co Kg Heißwassergerät

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2154445A3 (fr) * 2008-08-14 2016-05-18 BSH Hausgeräte GmbH Dispositif de fixation d'un chauffe-eau électrique instantané
EP2489950A1 (fr) * 2011-02-21 2012-08-22 Gerdes OHG Dispositif de raccordement pour un chauffe-eau instantané
CN105805949A (zh) * 2014-12-30 2016-07-27 青岛经济技术开发区海尔热水器有限公司 一种热水器前壳和装饰件的装配结构及热水器

Also Published As

Publication number Publication date
ATE541164T1 (de) 2012-01-15
DE102004037965A1 (de) 2006-03-16
EP1624259A3 (fr) 2010-11-03
EP1624259B1 (fr) 2012-01-11
PL1624259T3 (pl) 2012-06-29

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