EP1624259B1 - Continuous flow heater - Google Patents
Continuous flow heater Download PDFInfo
- Publication number
- EP1624259B1 EP1624259B1 EP05016631A EP05016631A EP1624259B1 EP 1624259 B1 EP1624259 B1 EP 1624259B1 EP 05016631 A EP05016631 A EP 05016631A EP 05016631 A EP05016631 A EP 05016631A EP 1624259 B1 EP1624259 B1 EP 1624259B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rear wall
- housing rear
- component material
- heating device
- soft component
- 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.)
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- 239000000463 material Substances 0.000 claims description 61
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 61
- 238000007789 sealing Methods 0.000 claims description 43
- 238000001746 injection moulding Methods 0.000 claims description 16
- 238000009434 installation Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims 9
- 238000000465 moulding Methods 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000001331 nose Anatomy 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Images
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
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- 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.
- the DE 696 03 389 T2 shows a gas burner, which has an anti-noise cavity to avoid unwanted operating noise, which has opposite phase noise to the unwanted operating noise for a particular frequency to be absorbed.
- an electrical home appliance is shown 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.
- 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 with molded-on elements of soft component material is provided.
- 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 back wall 1a is made of a hard component material in an injection molding process.
- the sealing lip 10, 10a is 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 according to Fig. 1 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.
- a section of a water heater is shown according to a third 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 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.
- screws 32 By means of screws 32, 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.
- Fig. 4 shows a plan view of a section of a water heater according to a fourth embodiment.
- 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.
- 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.
- an open end 43 rotates ( Fig. 5 ) of the tensioning hook into the screw, so that the rear wall is fastened as desired to a wall.
- a soft component material 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 sectional perspective view of a water 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.
- the latching hook 52 has no voltage.
- 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 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 of the drainage pipes can be connected to the water heater.
- 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 plan view of a lower part 70 of a water heater according to the seventh embodiment of FIG. 7 ,
- another cable grommet 81 is shown, which is made of a soft component material and 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.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Pipe Accessories (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
- Resistance Heating (AREA)
- Air-Conditioning For Vehicles (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Housings, Intake/Discharge, And Installation Of Fluid Heaters (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft ein elektrisches Heizgerät, insbesondere einen Durchlauferhitzer.The present invention relates to an electric heater, in particular a water heater.
Aus der
Die
In der
Aus der
Es ist Aufgabe der vorliegenden Erfindung, die bekannten elektrischen Heizgeräte, insbesondere Durchlauferhitzer, zu verbessern und eine günstigere Herstellung zu ermöglichen.It is an object of the present invention to improve the known electric heaters, in particular water heater, and to allow a cheaper production.
Diese Aufgabe wird durch ein elektrisches Heizgerät, insbesondere einen Durchlauferhitzer, gemäß Anspruch 1 gelöst.This object is achieved by an electric heater, in particular a water heater, according to
Somit wird ein elektrisches Heizgerät, insbesondere ein Durchlauferhitzer, vorgesehen, welcher eine Gehäuserückwand aus einem Hartkomponentenmaterial aufweist. An dieser Gehäuserückwand sind ferner weitere Elemente aus einem Weichkomponentenmaterial angespritzt. Diese Elemente weisen mindestens zwei der folgenden Elemente auf: ein Element zum Dichten der Gehäuserückwand gegenüber einer Kappe, ein Element zum Entkoppeln einer Strömungsstrecke von der Gehäuserückwand und ein Element zum Dichten einer Kabeldurchführung in der Gehäuserückwand.Thus, an electric heater, in particular a water heater, is provided, 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.
Durch das Anspritzen der Weichkomponentenmaterialelemente an die Gehäuserückwand aus einem Hartkomponentenmaterial kann das Gehäuse eines elektrischen Heizgerätes auf kostengünstige Art und Weise hergestellt und zusätzlich noch weitere Funktionen realisiert werden.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.
Die vorliegende Erfindung beruht auf dem Gedanken, Weich- und Hartkomponentenmaterial sowohl zur Federung als auch zur Dichtung in einem Gehäuseaufbau eines Durchlauferhitzers zu verwenden. Durch das Zweikomponenten-Spritzverfahren lassen sich Elemente aus Hart- und Weichkomponentenmaterialien einfach und kostengünstig in wenigen Verfahrensschritten fertigen. Ferner können verschiedene Elemente des Durchlauferhitzers, welche vorher einzeln gefertigt und dann zusammengebaut wurden, nunmehr mittels des Zweikomponenten-Spritzverfahrens in bzw. an der Rückwand integriert werden, was sich als kostengünstiger als separate Bauelemente erweist.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.
Weitere Aspekte der vorliegenden Erfindung sind Gegenstand der abhängigen Ansprüche.Further aspects of the present invention are the subject of the dependent claims.
Ausführungsbeispiele der Erfindung werden nachstehend unter Bezugnahme auf die Zeichnung näher erläutert.
- Fig. 1
- zeigt eine Teil-Schnittansicht eines Gehäuseaufbaus gemäß einem ersten Ausführungsbeispiel,
- Fig. 2
- zeigt eine Teil-Schnittansicht eines Gehäuseaufbaus gemäß einem zweiten Ausführungsbeispiel,
- Fig. 3
- zeigt einen Ausschnitt eines Durchlauferhitzers gemäß einem dritten Ausführungsbeispiel,
- Fig. 4
- zeigt einen Ausschnitt eines Gehäuses eines Durchlauferhitzers gemäß einem vierten Ausführungsbeispiel,
- Fig. 5
- zeigt eine Teil-Schnittansicht eines Gehäuses eines Durchlauferhitzers gemäß einem fünften Ausführungsbeispiel,
- Fig. 6
- zeigt einen Ausschnitt eines Durchlauferhitzers gemäß einem sechsten Ausführungsbeispiel,
- Fig. 7
- zeigt einen Ausschnitt eines Durchlauferhitzers gemäß einem siebten Ausführungsbeispiel und
- Fig. 8
- zeigt einen weiteren Ausschnitt des Durchlauferhitzers gemäß dem siebten Ausführungsbeispiel.
- Fig. 1
- shows a partial sectional view of a housing structure according to a first embodiment,
- Fig. 2
- shows a partial sectional view of a housing structure according to a second embodiment,
- Fig. 3
- shows a section of a water heater according to a third embodiment,
- Fig. 4
- shows a detail of a housing of a water heater according to a fourth embodiment,
- Fig. 5
- shows a partial sectional view of a housing of a water heater according to a fifth embodiment,
- Fig. 6
- shows a section of a water heater according to a sixth embodiment,
- Fig. 7
- shows a section of a water heater according to a seventh embodiment and
- Fig. 8
- shows a further section of the water heater according to the seventh embodiment.
In den folgenden Ausführungsbeispielen wird jeweils ein Gehäuse eines Durchlauferhitzers gezeigt. Zumindest ein Teil der Rückwand wird einstückig aus einem Kunststoff gefertigt. Hierbei werden zwei verschiedene Kunststoffkomponenten, nämlich ein Weichkomponentenmaterial und ein Hartkomponentenmaterial, verwendet. Die Rückwand ist überwiegend aus dem Hartkomponentenmaterial gefertigt und lediglich an einigen Stellen ist das Weichkomponentenmaterial angeordnet bzw. angespritzt. Das Weich- und Hartkomponentenmaterial kann in aufeinanderfolgenden Arbeitsgängen in der gleichen Spritzform gefertigt werden. Somit wird ein Teil eines Gehäuses aus Hartkomponentenmaterial mit angespritzten Elementen aus Weichkomponentenmaterial vorgesehen.In the following embodiments, 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. Here are 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. Thus, a portion of a housing of hard component material with molded-on elements of soft component material is provided.
Die Rückwand kann dabei in einem an sich bekannten Zweikomponenten-Spritzgussverfahren gespritzt werden, wobei die dazu verwendete Gießform derart ausgebildet ist, dass ein Anspritzen weiterer Komponenten aus Weichkomponentenmaterial gewährleistet wird.In this case, 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.
Die Dichtlippe 10 dient dabei dazu, eine Kappe des Durchlauferhitzers mit der Rückwand 1 a des Durchlauferhitzers abzudichten. Durch die angespritzte Dichtlippe aus einem Weichkomponentenmaterial wird eine gute Verformbarkeit und leichte Entformbarkeit der Dichtlippe erreicht.The sealing
Zur Verbesserung der Kabeleinführung wird die Rückwand 1 a mit mindestens einer Kabeltülle 20 vorgesehen. Dabei wird die Kabeltülle 20 aus einem Weichkomponentenmaterial hergestellt und an die Rückwand 1 a angespritzt. Dies erfolgt vorzugsweise in einem Zweikomponenten-Spritzgussverfahren.To improve the cable entry, the
Die Länge der Kabeltülle ist dabei vorzugsweise derart ausgestaltet, dass sie sich über die Rückwand 1a hinaus nach außen erstreckt. Hiermit kann eine verbesserte Anpassung der Kabeltülle an die entsprechenden Einbaugegebenheiten erreicht werden. Vorzugsweise ist die Kabeltülle 20 mit einer zylindrischen Wandung 21 ausgestattet, die sich nach unten verjüngt. Die Kabeltülle 20 kann an ihrem einen Ende eine nach innen gerichtete Ausbuchtung 22 aufweisen. Somit wird eine verbesserte Einführung der elektrischen Kabel für den Durchlauferhitzer erreicht.The length of the cable grommet is preferably configured such that it extends beyond the
In
Zusätzlich zu dem Lager 30 aus Weichkomponentenmaterial kann ein weiteres Element 39 (nicht gezeigt) aus einem Weichkomponentenmaterial zwischen dem anderen Ende der Wasser-Strömungsstrecke 31 des Durchlauferhitzers und der Rückwand 1 a vorgesehen werden. Durch ein derartiges Element 39 aus einem Weichkomponentenmaterial kann eine akustische Entkopplung der Wasser-Strömungsstrecke 31 und der Wasserzufuhrleitung von der Rückwand 1 a erreicht werden. Dies ist insbesondere dahingehend vorteilhaft, als dass die in der Strömungsstrecke 31 entstehenden Geräusche nicht mittels Körperschall an die Rückwand 1 a weitergeleitet werden können. Das Vorsehen des Lagers 30 sowie des Elementes 39 aus Weichkomponentenmaterial zwischen der Wasser-Strömungsstrecke 31 und der Wasserzufuhrleitung führt zu einer Reduzierung der als unangenehm empfundenen Geräusche in einem Durchlauferhitzer.In addition to the
Ferner sind zwei Blenden 76 gezeigt, welche ebenfalls mittels des Spritzgussverfahrens an der Rückwand 1 a oder der Zwischenwand angespritzt werden können. Diese Blenden 76 sind für den Fall vorgesehen, dass die Wasserzufuhrleitungen als Aufputzleitungen verlegt worden sind. Hierzu sind aus der Abdeckhaube bzw. der Kappe des Durchlauferhitzers zwei Ausnehmungen herausgebrochen oder herausgeschnitten, damit die Aufputzleitungen entsprechend an den Durchlauferhitzer angeschlossen werden können. Die Blenden 76, welche vorzugsweise aus einem Weichkomponentenmaterial hergestellt sind, werden dann in die Kappe eingesetzt, so dass die Aufputz-Wasserzufuhrleitungen durch das Loch in der Blende hindurchgeführt werden können und entsprechend angeschlossen werden können. Dadurch, dass die Blenden aus einem Weichkomponentenmaterial hergestellt werden, eignen sie sich gut zum weiteren Abdichten der Kappe des Durchlauferhitzers.Furthermore, two
An mindestens einer Seite der Rückwand 1 a können Nasen oder Haken aus einem Hart- und/oder Weichkomponentenmaterial vorgesehen werden, in welche die Kappe des Durchlauferhitzers während Montage-, Reparatur- oder Diagnosearbeiten eingehängt werden kann. Das Vorsehen der Nasen oder Haken erweist sich insofern als vorteilhaft, als der Monteur die Kappe immer an einem vorgesehen Platz einhaken kann.On at least one side of the
Die in einem ersten Ausführungsbeispiel der Erfindung beschriebene Dichtlippe 10a kann ebenfalls bzw. zusätzlich an der Außenseite der Rückwand vorgesehen werden. Die Herstellung und Ausgestaltung der Dichtlippe 10a entspricht dabei der Herstellung und Ausgestaltung der Dichtlippe 10 gemäß dem ersten Ausführungsbeispiel. Das Vorsehen einer Dichtlippe 10a außen an der Rückwand eines Durchlauferhitzers ermöglicht eine Abdichtung der Rückwand zur Wand hin, so dass weniger Feuchtigkeit in den Durchlauferhitzer eindringen kann.The sealing
Um einen Rückwandabschluss zu ermöglichen, kann gemäß einem weiteren Ausführungsbeispiel ein Monteur ein unteres Teil 70 der Rückwand teilweise absägen und die Montage vornehmen und danach das abgesägte Teil mittels Verbindungselementen wieder befestigen. Die Verbindungselemente können im wesentlichen H-förmig ausgestaltet sein. Hierbei können die Verbindungselemente an der Rückwand 1 a oder am Rückwandteil 70 des Durchlauferhitzers angespritzt werden. Bei Bedarf können sie zum Beispiel durch Abknicken entfernt werden und zur Befestigung des abgesägten Teiles des unteren Teiles 70 der Rückwand verwendet werden. Ist kein Rückwandabschluss notwendig, so beeinträchtigen die angespritzten Verbindungselemente die Montage des Durchlauferhitzers nicht weiter.In order to enable a rear wall termination, according to a further embodiment, a fitter can partially saw off a
Am unteren Teil 70 der Rückwand 1 a oder einer Zwischenwand 91 kann ferner eine Tasche oder Dichtlasche 90 zum Abdecken der Bedienelemente vorgesehen werden. Die Tasche bzw. die Dichtlasche 90 ist vorzugsweise aus Weichkomponentenmaterial in einem Zweikomponenten-Spritzgussverfahren an dem unteren Teil der Zwischenwand 91 angespritzt. Somit lässt sich ebenfalls ein Überkopfeinbau des Durchlauferhitzers ohne Beeinträchtigung der Dichtung des Bedienelementes ermöglichen.At the
Die oben beschriebenen Ausführungsbeispiele sind unabhängig voneinander ausgestaltet.The embodiments described above are configured independently of each other.
Die Dichtlasche 90 hat vorzugsweise die Form einer Schaufel und ist vorzugsweise seitlich mit einer Falte 92 ausgestattet. Sie umgreift somit in die Aussparung 93 eingreifende Gehäuse- oder Geräteteile. Sind diese nicht vorhanden, legt sich die Dichtlasche 90 von innen gegen eine Kappe (nicht dargestellt) und dichtet diese ab.The sealing
Weiterhin sind auf der Zwischenwand 91 Dichtlippen 94 in Zweikomponenten-Technik angespritzt, die von innen gegen die Geräteabdeckung bzw. Kappe anliegen und abdichten. Durch die Kombination der Dichtlippen 94 mit der Dichtlasche 90 ist eine Abdichtung geschaffen, die es ermöglicht, Kappen mit unterschiedlichen Formteilen aufzusetzen, wobei sich insbesondere die Dichtlasche 90 entweder an die Kappe direkt oder an eine an dieser befindlichen Ausbuchtung anlegt.Furthermore, 91 sealing
Claims (9)
- Electrical heating device, particularly an instantaneous water heater, having a housing rear wall (1a) made of a hard component material and at least two of the following soft component material elements:- Element (10) for sealing the housing rear wall (1a) to a cap,- Element (30) for decoupling a flow section (31) from the housing rear wall (1 a) and- Element (20) for sealing a cable bushing in the housing rear wall (1a),wherein the soft component material elements are molded onto the housing rear wall.
- Electrical heating device according to claim 1, wherein the element (10) for sealing the housing rear wall (1a) to a cap is a sealing lip (10) which extends at least partially along the housing rear wall (1 a).
- Electrical heating device according to claim 1 or 2, wherein
the element (20) for sealing a cable bushing in the housing rear wall (1 a) is a cable sleeve (20). - Electrical heating device according to claim 3, wherein
the cable sleeve (20) extends to the outside beyond the housing rear wall (1 a). - Electrical heating device according to claim 1, wherein the element (30) for decoupling a flow section (31) from the housing rear wall (1 a) is a bearing (30) made of soft component material.
- Electrical heating device according to claim 1, wherein
the element (30, 33, 34) for decoupling the flow section (31) from the housing rear wall (1 a) has arms (33) on the flow section (31) and pockets (34) on the housing rear wall such that the arms can engage in the pockets (34) during assembly. - Electrical heating device according to claim 1, wherein
the housing rear wall (1 a) has at least one hole (40),
a tenterhook (41) for engaging in one of the holes (40) in the housing rear wall (1 a) for engaging in fastening elements on an installation location. - Electrical heating device according to claim 1, furthermore having a latching element (51, 52) for receiving a socket terminal strip, wherein the latching element (51, 52) has a tenterhook (52) which is surrounded on three sides by a soft component material, wherein the soft component material (51) is molded onto the tenterhook by means of a two-component injection molding method.
- Electrical heating device according to claim 1, furthermore having a flexible stealing tab (90) molded on to an intermediate wall (91) which contacts the cap of the device from the inside for sealing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL05016631T PL1624259T3 (en) | 2004-08-05 | 2005-07-30 | Continuous flow heater |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004037965A DE102004037965A1 (en) | 2004-08-05 | 2004-08-05 | Heater |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1624259A2 EP1624259A2 (en) | 2006-02-08 |
EP1624259A3 EP1624259A3 (en) | 2010-11-03 |
EP1624259B1 true EP1624259B1 (en) | 2012-01-11 |
Family
ID=35229660
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05016631A Active EP1624259B1 (en) | 2004-08-05 | 2005-07-30 | Continuous flow heater |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1624259B1 (en) |
AT (1) | ATE541164T1 (en) |
DE (1) | DE102004037965A1 (en) |
PL (1) | PL1624259T3 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008013725B3 (en) * | 2008-03-11 | 2009-09-17 | Stiebel Eltron Gmbh & Co. Kg | Electric home automation device |
DE102008037679A1 (en) * | 2008-08-14 | 2010-03-04 | BSH Bosch und Siemens Hausgeräte GmbH | Fastening device of an electric instantaneous water heater |
PL2489950T3 (en) * | 2011-02-21 | 2016-02-29 | Gerdes Ohg | Connector device for a continuous-flow heater |
CN105805949A (en) * | 2014-12-30 | 2016-07-27 | 青岛经济技术开发区海尔热水器有限公司 | Assembly structure of shell and decoration before water heater and water heater |
Family Cites Families (4)
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 |
DE19841693B4 (en) * | 1998-09-11 | 2013-01-31 | BSH Bosch und Siemens Hausgeräte GmbH | Electric domestic appliance as well as electric instantaneous water heater with cable inlet grommet |
DE19845859C5 (en) * | 1998-10-05 | 2010-05-06 | BSH Bosch und Siemens Hausgeräte GmbH | Electric home appliance with partition |
DE10057034C2 (en) * | 2000-11-17 | 2003-03-06 | Stiebel Eltron Gmbh & Co Kg | Hot water unit |
-
2004
- 2004-08-05 DE DE102004037965A patent/DE102004037965A1/en not_active Withdrawn
-
2005
- 2005-07-30 EP EP05016631A patent/EP1624259B1/en active Active
- 2005-07-30 PL PL05016631T patent/PL1624259T3/en unknown
- 2005-07-30 AT AT05016631T patent/ATE541164T1/en active
Also Published As
Publication number | Publication date |
---|---|
ATE541164T1 (en) | 2012-01-15 |
EP1624259A3 (en) | 2010-11-03 |
EP1624259A2 (en) | 2006-02-08 |
DE102004037965A1 (en) | 2006-03-16 |
PL1624259T3 (en) | 2012-06-29 |
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