EP2489953A1 - Electric water heating units for supplying hot water - Google Patents

Electric water heating units for supplying hot water Download PDF

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Publication number
EP2489953A1
EP2489953A1 EP11155231A EP11155231A EP2489953A1 EP 2489953 A1 EP2489953 A1 EP 2489953A1 EP 11155231 A EP11155231 A EP 11155231A EP 11155231 A EP11155231 A EP 11155231A EP 2489953 A1 EP2489953 A1 EP 2489953A1
Authority
EP
European Patent Office
Prior art keywords
edge
web
lid
webs
heater according
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
EP11155231A
Other languages
German (de)
French (fr)
Other versions
EP2489953B1 (en
EP2489953A9 (en
Inventor
Klaus Beck
Christian Koch
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.)
Gerdes OHG
Original Assignee
Gerdes OHG
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 Gerdes OHG filed Critical Gerdes OHG
Priority to EP11155231.1A priority Critical patent/EP2489953B1/en
Priority to CN201210164292.3A priority patent/CN102679532B/en
Publication of EP2489953A1 publication Critical patent/EP2489953A1/en
Publication of EP2489953A9 publication Critical patent/EP2489953A9/en
Application granted granted Critical
Publication of EP2489953B1 publication Critical patent/EP2489953B1/en
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
    • 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
    • F24H1/103—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 with bare resistances in direct contact with the fluid
    • 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
    • F24H1/12—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 in which the water is kept separate from the heating medium
    • F24H1/14—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 in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
    • F24H1/142—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 in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form using electric energy supply
    • 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
    • F24H9/00—Details
    • F24H9/14—Arrangements for connecting different sections, e.g. in water heatersĀ 
    • F24H9/146—Connecting elements of a heat exchanger
    • 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
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
    • F24H9/1818—Arrangement or mounting of electric heating means

Definitions

  • the invention relates to an electric instantaneous water heater for hot water, comprising a extending in the longitudinal, width and height body with a body front side, a body back, a body height in the height dimension determining body edge side between the front body and the body back and one within a monolithic part of the A body formed cavity, wherein the body back forms a rear wall and a rear wet area of a front-side drying space and wherein the body edge side has an opening edge surface in which the cavity is open with an opening, comprising the opening edge surface associated, she covering lid edge portion with a lid outside, wherein formed on the opening edge surface free body edge side outwardly projecting body edge webs and on the outside of the lid to the outside protruding cover edge webs sin d, and comprising an outer housing in which the base body is seated, wherein the base body and the lid edge part via joints which are directed to elaboraterandstegen and lid edge webs transversely adjacent to each other and wherein the elaboraterandstegege and the cover edge webs sealing
  • edge webs on the lid namely the lid edge webs
  • Edge webs on the body namely the body edge webs, designed as rib webs, which are usually flat in the height dimension. They may have staggered gaps between them at certain intervals. This not only prevents the ingress of external water preventing sealing system, but also a labyrinth system that ensures the escape of condensation from the drying room in the wet room.
  • the main body of the generic water heater at two broad sides in each case in an openings having edge surface of a monolithic region, namely the opening edge surface with water channels, which together form a channel cavity, open.
  • the opening edge surfaces and the cover edge parts are joined to each other in a watertight and pressure-tight manner.
  • sealed bridge channels are formed between the lid edge portions and the opening edge surfaces, which connect adjacent channel openings with each other.
  • the main body extends in the longitudinal dimension mostly longer than in the width dimension, so in the two dimensions, the aspect ratio may be reversed or the lengths may be at least substantially equal.
  • the basic body is a cuboid structure. It can also be at least partially round.
  • the body front side of the main body is always to be understood as the dry room facing side and the body rear side facing away from the drying space regardless of the name, orientation and / or arrangement of the side of the water heater or its housing.
  • To equip known electric water heater of the type mentioned belongs to a monolithic middle part forming base body with two end faces forming broadsides, to each of which a lid edge part is attached in the impact seat over the entire surface of the broadside.
  • the end faces form the opening edge surfaces.
  • the front side is a separation and joint surface, which is bounded by a circumferential groove on the body, which is divided as such in joints of different directions along respective body sides.
  • the lid edge portion sits in the manner of a disc against the opening edge surface, wherein the joints between the body edge webs and the cover edge webs are determined solely by the edges of the abutting surfaces between the lid edge portion and the body.
  • This separation construction remains unsatisfactory in terms of sufficiently dense, defined and simple, jet water passage through the web system sealing seal.
  • the pressure and water seal along the said bridge channels is impaired or associated with special sealing measures.
  • the butt joint of the lid edge part with the main body which is usually produced by screw connection, is particularly stressed on bending.
  • the production of both the tightness of the web system, as well as the channel connections requires a correspondingly high clamping force, which is applied to the entire broad side of the body with a variety of clamping points.
  • objectives of the invention are to improve the generic water heater in terms of simple design, the sealing property of the web system between the body and the outer casing and the connection of the lid edge portion with the opening edge surface.
  • improved mass production, cost reduction of the production and improvement of all sealing compounds are to be achieved.
  • the web system comprises at least one free of the transverse joints, forming a sealing ridge body edge web that passes the opening edge surface without joints.
  • At least one sealing web of the web system formed on at least one monolithic region or part of the base body crosses or bridges the opening edge surface and that this sealing web is interrupted by no parting line separating the cover edge part from the main body. It is achieved that the outer contour of the base body is completely closed along at least one sealing line of the joint-free sealing web without gap. Also, only parting lines are formed between the lid edge part and the main body, which are formed by separating surfaces, which are directed transversely to the opening edge surface. These dividing surfaces can be adjacent to each other to minimize the joints. However, the parting surfaces can also be relatively widely spaced, so that with parting lines then channel or shaft-like areas or generally separation areas / spaces between the separating surfaces are designated. There are several advantages.
  • the joint-free, i. without cross-dividing joint continuous web simplifies the design of the body.
  • the sealing property of the web system is improved by eliminating conventional joint gaps between the lid edge portion and the base body. This avoids special density adjustments and additional sealants. This leads, in particular with regard to series production, to cost savings and simplification of assembly. Nevertheless, the sealing function of the web system between the main body and the outer housing is reliable and defined. Conventional mating inaccuracies between sealing webs are eliminated.
  • the connection of the cover part with the main body is improved.
  • the at least one joint-free body edge web or each joint-free body edge web expediently run parallel to the opening edge surface.
  • the at least one joint-free body edge web is preferably part of a one-piece main body.
  • the at least one joint-free body edge web is particularly advantageously formed circumferentially on the edge side of the main body.
  • Such a circumferential joint-free body edge web can in preferably parallel arrangement with further circumferential Edge webs to be interrupted by web gaps. It is a known Wegelabyrinth for discharging condensation water from the drying room in the wet room.
  • a peripheral edge web is generally understood over the entire edge side formed on the base web formed, which can be divided by labyrinth gaps in a plurality of webs, which then form portions of the circumferential ridge. At body corners, which also divide the circumferential bridge into sections, it is continuous or uninterrupted.
  • the outer casing of the water heater on a circumferential housing inner edge which is adapted to the circumference seamless circumferential edge web such that circumferentially, optionally by positive engagement, between the outer casing and the jointless body edge web a passage of jet water blocking seal is made.
  • One embodiment consists in that a parting line parallel to the joint-free body edge web is formed between the joint-free body edge web and the cover edge part.
  • the parallel parting line between the joint-free sealing body edge web and a parallel sealing web is formed.
  • the joint-free body edge web is at least partially formed by a portion of the lid edge portion at least partially, optionally in the form of seat, on receiving frame, which is formed on the base body.
  • the body front side of the body has a side edge, which forms the joint-free body edge web.
  • the lid edge part can be encapsulated in a border defining the opening edge surface, which is formed on the base body, in particular be inserted there.
  • parting lines are formed between the main body and the lid edge part, which are sections of a ring-opening seam that is preferably completely, namely closed, surrounding the opening edge surface.
  • a portion of the ring separation is advantageously formed by said parallel separation joint.
  • the ring parting line has an outer edge at least partially delimiting the lid outer side, which is directed transversely to the opening edge surface.
  • the lid edge part can be configured in a special way in order to further improve or simplify the sealing function of the web system with joint-free body edge web forming the essential sealing web.
  • One measure may be that at least in a central region of the lid outer side formed cover edge webs are aligned with body edge webs on the body edge side.
  • a cover outer surface carrying the cover edge webs and an outer surface of the main body edge side which adjoins the cover edge part can adjoin one another steplessly in a matching surface plane.
  • the lid edge part may be formed higher than the main body edge side in the height dimension of the base body.
  • in connection with this configuration may be formed on the lid edge portion and in its area on the body edge side in the height dimension juxtaposed ribs whose number is greater than that of correspondingly arranged ribs in portions of the body edge side adjacent to the lid edge portion.
  • the rigidity at the body edge side provided with the lid edge part or in particular at the broad side of the main body is increased by such ribs.
  • said ribs comprise sealing webs of the web system whose number is greater in the section corresponding to the cover edge part than in sections which adjoin the cover edge part.
  • the at least one joint-free body edge web is an in the height dimension of the body on the body edge side outer, located towards the front of the body web. In conjunction with the aforementioned circumferential web formation and arrangement, it is achieved that the edge or the edge surface of the front side of the main body, in cooperation with the outer housing, form the circumferential web seal between the outer housing and the main body.
  • the solution according to the invention is generally provided for each sealed edge edge area closed sealed edge surface of the body of a water heater.
  • the measures according to the invention are particularly advantageous in the case of a continuous flow heater, which comprises two opposite broad sides, in each of which a cover edge part set against the associated opening edge surface is enclosed.
  • a continuous flow heater which comprises two opposite broad sides, in each of which a cover edge part set against the associated opening edge surface is enclosed.
  • cover edge portions form together with the opening edge surfaces bridge channels, through the respectively adjacent in the opening edge surfaces channel openings sealed together for passage of water.
  • the instantaneous water heater according to the invention which comprises at least one cover edge part forming a sealing element, which forms a part of the web system with sealing webs, permits a particularly advantageous design and arrangement of the lid edge part.
  • the opening edge surface On at least one edge side portion of the base body, the opening edge surface may be arranged and formed such that the opening edge surface with associated lid edge portion forms a part of the body edge portion occupying only about 1/4 to 2/3 of the entire edge side portion.
  • the body edge section is, in particular, the or each broad side of the basic body which, moreover, has longitudinal sides as further edge side sections.
  • the formation of the lid edge part in conjunction with the at least one continuous, joint-free body edge web as part of the body edge section, in particular the broad side entails the advantage that the cover part is enclosed with a relatively small cover surface in a reliable sealing seat in an associated enclosure and yet easy, namely with relatively little attachment points can be attached.
  • a considerable advantage consists in the reduction of the lid edge portion or the opening edge surface to only about 1/4 to 2/3 of the entire body edge portion, while conventional basic body of the generic water heater cover edge portions have, each forming the entire broad side of the body. In this case, the outer contour of the body remains closed by means of the joint-free body edge web along the broad side or generally a portion of a body edge side in itself.
  • An in Fig. 1 to 4 illustrated electrical water heater 1 comprises a hood provided as outer housing 12, a frame-shaped housing back 13 and a monolithic body 2 with body front 21, body back 22 and between the body front 21 and the body back 22 circumferential body edge side 23.
  • the body back 22 can also be used as the drying space facing away from the outside be designated.
  • the basic shape of the water heater 1 is substantially cuboid. Accordingly, the basic shape of the base body 2 is parallelepiped-shaped, each having opposite longitudinal sides 231 and broad sides 232, which are sections of the peripheral edge side 23.
  • the longitudinal sides 231 and the broad sides 232 extend in the longitudinal dimension L or width dimension B, and the edge side 23 is in height dimension H.
  • the main body 2 is expediently a molded plastic part.
  • the main body 2 may also be formed of other material in which water leading channels 5 can be formed and the sufficient strength and electrical Has insulating properties.
  • the channels 5 are part of a channel system to which a connected in the middle of his path, water-conducting heating element, such as a heating cartridge 15 is connected.
  • the main body 2 divides the water heater 1 into a drying room 101 and a wet room or wet area 102.
  • the drying room 101 is covered by the outer housing 12, while the wet area 102 is surrounded by the frame of the housing rear part 13.
  • the rear side 22 of the main body 2 is an outer side and forms a rear wall 11 of the flow heater 1.
  • An electric heater for heating continuous water is disposed on the inside or front side 21 of the main body 2.
  • this heater namely in particular a printed circuit board 14 and equipped with a heating element, such as a bare heating wire, water-conducting heating cartridge 15.
  • the heater may be designed differently and is not the subject of the present invention.
  • the heater however, the said water channels 5 are assigned, which form a cavity 24 in the base body 2. How out Fig. 4 As can be seen, the water channels 5 extend in the longitudinal dimension L in parallel.
  • the water channels 5 are open on the base body 2 on both broad sides 232 in each case in an edge surface 25, which is part of the monolithic base body 2, with openings 51 which form an overall opening 50.
  • the other broadside is designed accordingly with the corresponding basic shape of the opening edge surface 25.
  • the water channels 5 thus extend between the two opening edge surfaces 25, to which they are directed transversely, in the embodiment vertically.
  • the openings 51 of the water channels 5 are connected to form the channel system.
  • the channel connection on one broadside 232 goes out Fig. 4 . 5A and 5B out. Adjacent channel openings 51 and channel ends are connected to each other in pairs via a bridge channel.
  • the water heater 1 further comprises cover-forming monolithic edge portions, which are referred to as lid edge portions 3.
  • lid edge portions 3 For each opening edge surface 25 includes a lid edge portion 3 with a matched to the opening edge surface 25 corresponding Inner surface 321 on the inside of the cover 32.
  • the cover parts 3 are suitably made of plastic injection molded parts.
  • bridge channel halves 28 and in the cover edge part 3 corresponding bridge channel halves 38 are formed.
  • the bridge channel halves 28, 38 come sealed to each other.
  • a watertight and pressure-tight seal can in each case comprise the half-form of the channel halves 28, 38 corresponding edge sealing rings 331, the components od a sealing mat 33 od.
  • the edge side 23 of the main body 2 is peripherally equipped with a web system 4, which is fitted between the base body 2 and the outer housing 12.
  • a web system 4 which is fitted between the base body 2 and the outer housing 12.
  • the web system 4 comprises at the height side of the main body 1 sealing webs 41, namely circumferential sealing webs 411,412 and 413.
  • the circumferential sealing webs 411, 412 and 413 or associated sections or webs are parallel and are arranged in the height dimension H with at least substantially equal distances. The distances may be different, and also a skew to the longitudinal edges of the base body 2 is possible.
  • the circumferential sealing webs 411, 412 and 413 comprise body edge webs 26, which are formed integrally with the base body 2, and cover edge webs 36, which are each formed on the lid outer side 31 of the lid edge parts 3.
  • the sealing webs 26, 36 are flat in the height dimension H, and they protrude equally on the body edge side 23 and the lid edge parts 3 in order to form with their narrow edges between them and the inside of the outer housing 12 jet water passage blocking sealing gaps.
  • the circumferential sealing web 411 is formed according to the invention as a body edge web 26 which is interrupted by no parting line between the base body 2 and the lid edge parts 3. This is going out Fig. 1 and 2 clear. Namely, the circumferential sealing web 411 comprises, at each broad side 232 in the monolithic region of the base body 2, a joint-free body edge web 261, which as such is part of the circumferential sealing web 411 without a separating / sealing joint and the opening edge surface 25 passes without joints.
  • the joint-free body edge web 261 comprises a portion of the lid edge portion 3 receiving skirt 29, which forms the opening edge surface 25 bounding and surrounding projecting on her receiving edge, in which the lid edge portion 3 is sunk in particular as a plug-in part and optionally inserted positively.
  • the receiving edge of the enclosure 29 forms a circumferential closed separation surface 291, which is directed perpendicular to the opening edge surface 25.
  • the lid edge part 3 has a lid edge 39 with a separating surface 391 which is complementary to the separating surface 291 or corresponds to it.
  • the enclosure 29 forms with the seated lid edge part 3 between the parting surfaces 291, 391 a circumferential separation gap, namely a circumferential ring parting line 273, as such exclusively on the broadside 232, ie on the lid edge portion 3 having the body edge side 23 with the transverse
  • the opening edge surface 25 directed separating surfaces 291, 391 forms the only parting line 27 between the base body 2 and the lid edge part 3.
  • therein is generally a feature of the invention.
  • the ring parting line 273 comprises first sections, namely transverse parting lines 272, which traverse the circumferential sealing webs 412, 413. A portion of the ring parting line 273 is formed by a parallel parting line 271 which extends in parallel with the body edge land 261 adjacent thereto.
  • the annular separation joint 273 comprises an outer edge parting line 275, which comprises end sections of the transverse parting lines 272 and, moreover, extends substantially parallel to the sealing webs 411, 412 and 413.
  • advantageously all sections of the ring-separating joint 273 form seals which prevent the penetration of jet water.
  • the lid rim portion 3 is particularly stiffened. It comprises an additional web 362 which widens the parallel parting line 271 in the longitudinal dimension L.
  • a further additional web 363 is formed, which is arranged in alignment with outside of the opening edge surface 25 and the lid edge portion 3 extending portions of the sealing web 411. Sealing webs 364 of the lid edge part 3 are aligned with body edge webs 264 of the circumferential sealing webs 412 and 413. With the sealing webs 261, 362, 363 and 364 has in the height dimension a larger number of ribs than at the adjacent body edge sides.
  • the lid edge part 3 has a lid outer surface 310 which adjoins a corresponding outer surface 230 of the main body edge side 3 without steps in a matching surface plane.
  • the circumferential sealing web 411 which comprises the joint-free body edge webs 261 on the broad sides 232 and along the entire edge side 23 and at corners of the base body 2, moreover, free of joints between the cover parts 3 and the base body 2 is in the embodiment in a height dimension H of the base body 2 on the body edge side 23 outer, on the body front side 21 to the drying room 101 located down web.
  • the body front side 21 of the base body 2 has a surface edge 211 which circumferentially forms the sealing web 411 or the body edge webs 261.
  • a circumferential inner edge 121 of the outer housing 12 is particularly adapted to the circumferential sealing web 411 dimensionally accurate, that the circumferential sealing web 411 and the outer housing 12 form a seal sealing the web system 4 at least substantially defining the circumferential.
  • a projecting Justierrand 221 is provided, on which the outer housing 12 is positively seated with free edge.
  • the lid edge part 3 in the height dimension H higher than the main body edge side 23 outside the lid edge part 3 is formed.
  • the joint-free body edge web 261 and the adjoining additional web 362 form an inside projecting, elevated area on the front side 21 of the body 2.
  • the cavity 24 or cavity area formed by the water channels 5 corresponds to a region of the main body 2, in which the water channels 5 are arranged in multiple layers, in the embodiment in three vertical positions, in a dense packing substantially in one half of the main body 2 while the other body half remains relatively flat and leaves free space for receiving heater components.
  • This arrangement cross-section is trapezoidal in the embodiment, in the boundary by the cross-dividing joints 272 and connecting them by parallel sections of the joints 271 and 275 of the ring parting line 273rd
  • the transverse sealing joints 272 form two non-parallel sides and the parallel portions of the joints 271, 275 parallel sides of the trapezoidal shape.
  • the coincidence ratio of the lengths of vertical (horizontal) normal axis 251 and horizontal normal axis 252 of the surface or trapezoidal shape is not less than 50% and preferably not less than 55%, wherein the two normal axes 251, 252 center axes orthogonal to each other with the surface shape spanning half-lengths are ( Fig. 4 ).
  • This embodiment has in connection with the joint-free body edge web 261 the particular advantage that the lid edge part 3 sits particularly low tension in the enclosure 29, wherein, for example, as shown, a fixing connection between the body 2 and the cover part 3 by only four attachment points, in the example by means of screw, realized.
  • Such attachment points are minimized over the ring parting line 273 in number and preferably at least substantially equal distributed according to corresponding sections.
  • the attachment points are located exclusively in corner regions of opening edge surfaces, for example, as shown, in the corner regions of the trapezoidal surface.
  • the measures ensure that the interrupted with cross-cut joints 272 sealing webs in conjunction with the joint-free body edge webs 261 in particular Contribute to the reliable and defined seal by means of the web system 4.
  • the above measures and / or the described Aus / stiffening with additional ribs also opens up the possibility of interrupting in the height dimension H at least one sealing ridge, in the embodiment, the middle sealing ridge 412 to form at least one labyrinth passage 42 for condensed water.
  • labyrinth passages or gaps 43 are formed in the circumferential sealing webs 411, 412, 413.

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Abstract

The heater has rear portion that separates a rear wet area from a front-side drying room. An opening edge surface portion is arranged in side edge portion (23). The opening edge surface portion is covered with lid portion (3).The opening edge surface portion and edge webs are formed on an outer side of lid portion. The main portion (2) and lid portion are connected together via crossing joint portions (272) to join edge webs and cover edge webs transversely. The sealing webs are formed on edge webs and cover edge webs. The crossing joint portions are formed on sealing edge webs (261,411).

Description

Die Erfindung betrifft einen elektrischen Durchlauferhitzer zur Warmwasserbereitung, umfassend einen sich in LƤngs-, Breiten- und Hƶhendimension erstreckenden Grundkƶrper mit einer Kƶrpervorderseite, einer KƶrperrĆ¼ckseite, einer die Kƶrperhƶhe in der Hƶhendimension bestimmenden Kƶrperrandseite zwischen der Kƶrpervorderseite und der KƶrperrĆ¼ckseite und einem innerhalb eines monolithischen Teils des Grundkƶrpers ausgebildeten Hohlraum, wobei die KƶrperrĆ¼ckseite eine RĆ¼ckwand bildet und einen rĆ¼ckwƤrtigen Nassbereich von einem vorderseitigen Trockenraum trennt und wobei die Kƶrperrandseite eine ƖffnungsrandflƤche aufweist, in der der Hohlraum mit Ɩffnung offen ist, umfassend ein der ƖffnungsrandflƤche zugehƶriges, sie abdeckendes Deckelrandteil mit einer DeckelauƟenseite, wobei an von der ƖffnungsrandflƤche freier Kƶrperrandseite nach auƟen hervorstehende Kƶrperrandstege und an der DeckelauƟenseite nach auƟen hervorstehende Deckelrandstege ausgebildet sind, und umfassend ein AuƟengehƤuse, in dem der Grundkƶrper sitzt, wobei der Grundkƶrper und das Deckelrandteil Ć¼ber Trennfugen, die zu Kƶrperrandstegen und Deckelrandstegen quer gerichtet sind, aneinander grenzen und wobei die Kƶrperrandstege und die Deckelrandstege Dichtstege eines zwischen dem Grundkƶrper und dem AuƟengehƤuse des Durchlauferhitzers eingepassten, gegen Strahlwasser dichtenden Stegsystems ausbilden.The invention relates to an electric instantaneous water heater for hot water, comprising a extending in the longitudinal, width and height body with a body front side, a body back, a body height in the height dimension determining body edge side between the front body and the body back and one within a monolithic part of the A body formed cavity, wherein the body back forms a rear wall and a rear wet area of a front-side drying space and wherein the body edge side has an opening edge surface in which the cavity is open with an opening, comprising the opening edge surface associated, she covering lid edge portion with a lid outside, wherein formed on the opening edge surface free body edge side outwardly projecting body edge webs and on the outside of the lid to the outside protruding cover edge webs sin d, and comprising an outer housing in which the base body is seated, wherein the base body and the lid edge part via joints which are directed to Kƶrperrandstegen and lid edge webs transversely adjacent to each other and wherein the Kƶrperrandstegege and the cover edge webs sealing webs between the main body and the outer casing of the water heater form fitted, against jet water sealing web system.

Bekannten elektrischen Durchlauferhitzern der genannten Art ist es eigen, dass der Grundkƶrper einen insbesondere einstĆ¼ckigen Montagekƶrper bildet, an dem vorderseitig, nƤmlich in dem Trockenraum zwischen seiner im Durchlauferhitzer gelegenen Vorder- bzw. Innenseite und dem AuƟengehƤuse Bauelemente einer elektrischen Heizeinrichtung montiert bzw. angeordnet sind. Zu solchen Bauelementen gehƶren zum Beispiel elektrische Leiterplatten und deren BestĆ¼ckung insbesondere mit elektronischen Leistungsschaltelementen, z.B. Triacs, Transformatoren, Kondensatoren und Heizkartuschen. Die Dichtstege des Stegsystems grenzen passgenau an die Innenseite des AuƟengehƤuses, zumeist in Form einer vorderseitigen GerƤtehaube, derart dicht an, dass Tropfwasser, Spritzwasser und/oder Strahlwasser nicht in den Trockenraum gelangen kann. Ɯblicherweise sind Randstege am Deckel, nƤmlich die Deckelrandstege, und Randstege am Kƶrper, nƤmlich die Kƶrperrandstege, als Rippenstege ausgebildet, die in der Hƶhendimension zumeist flach sind. Sie kƶnnen in bestimmten AbstƤnden gegeneinander versetzte, lĆ¼ckenartige Unterbrechungen aufweisen. Damit ist nicht nur ein den Zutritt von AuƟenwasser verhinderndes Dichtsystem, sondern auch ein Labyrinthsystem gebildet, das den Austritt von Kondenswasser aus dem Trockenraum in den Nassraum gewƤhrleistet. Ɯblicherweise ist der Grundkƶrper des gattungsgemƤƟen Durchlauferhitzers an zwei Breitseiten jeweils in einer Ɩffnungen aufweisenden RandflƤche eines monolithischen Bereichs, nƤmlich der ƖffnungsrandflƤche mit WasserkanƤlen, die zusammen einen Kanalhohlraum bilden, offen. Die ƖffnungsrandflƤchen und die Deckelrandteile sind wasser- und druckdicht aneinander gefĆ¼gt. Ɯblicherweise sind zwischen den Deckelrandteilen und den ƖffnungsrandflƤchen gedichtete BrĆ¼ckenkanƤle ausgebildet, die benachbarte Kanalƶffnungen miteinander verbinden.Known electric water heaters of the type mentioned it is peculiar that the main body forms a particular one-piece mounting body, are mounted or arranged on the front side, namely in the drying space between its located in the water heater front or inside and the outer housing components of an electric heater. Such components include, for example, electrical circuit boards and their assembly, in particular with electronic power switching elements, such as triacs, transformers, capacitors and cartridges. The sealing webs of the web system border precisely on the inside of the outer housing, usually in the form of a front device hood, so close to that dripping water, water spray and / or jet water can not get into the drying room. Usually, edge webs on the lid, namely the lid edge webs, and Edge webs on the body, namely the body edge webs, designed as rib webs, which are usually flat in the height dimension. They may have staggered gaps between them at certain intervals. This not only prevents the ingress of external water preventing sealing system, but also a labyrinth system that ensures the escape of condensation from the drying room in the wet room. Usually, the main body of the generic water heater at two broad sides in each case in an openings having edge surface of a monolithic region, namely the opening edge surface with water channels, which together form a channel cavity, open. The opening edge surfaces and the cover edge parts are joined to each other in a watertight and pressure-tight manner. Usually sealed bridge channels are formed between the lid edge portions and the opening edge surfaces, which connect adjacent channel openings with each other.

Wenngleich sich der Grundkƶrper in der LƤngsdimension zumeist lƤnger als in der Breitendimension erstreckt, so kann in den beiden Dimensionen das LƤngenverhƤltnis umgekehrt sein oder die LƤngen kƶnnen zumindest im Wesentlichen gleich sein. Zumeist ist der Grundkƶrper ein quaderfƶrmiges Gebilde. Er kann auch zumindest teilweise rundfƶrmig sein. Die Kƶrpervorderseite des Grundkƶrpers ist stets als dem Trockenraum zugewandte Seite und die KƶrperrĆ¼ckseite als dem Trockenraum abgewandte Seite unabhƤngig von der Bezeichnung, Ausrichtung und/oder Anordnung der Seite des Durchlauferhitzers bzw. seines GehƤuses zu verstehen.Although the main body extends in the longitudinal dimension mostly longer than in the width dimension, so in the two dimensions, the aspect ratio may be reversed or the lengths may be at least substantially equal. In most cases, the basic body is a cuboid structure. It can also be at least partially round. The body front side of the main body is always to be understood as the dry room facing side and the body rear side facing away from the drying space regardless of the name, orientation and / or arrangement of the side of the water heater or its housing.

Zur Ausstattung bekannter elektrischer Durchlauferhitzer der genannten Art gehƶrt ein ein monolithisches Mittelteil bildender Grundkƶrper mit zwei Stirnseiten bildenden Breitseiten, an die jeweils Ć¼ber die gesamte FlƤche der Breitseite ein Deckelrandteil im StoƟsitz angesetzt ist. Die Stirnseiten bilden die ƖffnungsrandflƤchen. Die Stirnseite ist eine Trenn- und FugenflƤche, die durch eine am Grundkƶrper umlaufende Fuge begrenzt ist, die als solche in Trennfugen unterschiedlicher Richtung lƤngs jeweiliger Grundkƶrperseiten unterteilt ist. Diese Trennfugen liegen ausschlieƟlich, entsprechend den Seitenbezeichnungen des Grundkƶrpers, an den LƤngsseiten, der Vorderseite sowie der RĆ¼ckseite des aus dem Grundkƶrper und den Deckelrandteilen gebildeten Kƶrperverbunds frei. Infolgedessen ist die die Fugen bildende TrennflƤche parallel mit bzw. gleich der ƖffnungsrandflƤche, und sie ist quer oder senkrecht zu den WasserkanƤlen gerichtet. Das Deckelrandteil sitzt nach Art einer Scheibe gegen die ƖffnungsrandflƤche, wobei die Trennfugen zwischen den Kƶrperrandstegen und den Deckelrandstegen ausschlieƟlich durch die RƤnder der StoƟflƤchen zwischen dem Deckelrandteil und dem Grundkƶrper bestimmt sind. Diese Trennkonstruktion bleibt hinsichtlich ausreichend dichter, definierter und einfacher, Strahlwasserdurchtritt durch das Stegsystem unterbindender Abdichtung unbefriedigend. Zudem ist auch die Druck- und Wasserdichtung lƤngs der genannten BrĆ¼ckenkanƤle beeintrƤchtigt bzw. mit besonderen DichtmaƟnahmen verbunden. Die zumeist durch Schraubverbindung hergestellte StoƟverbindung des Deckelrandteils mit dem Grundkƶrper ist besonders auf Biegung beansprucht. Das Herstellen sowohl der Dichtheit des Stegsystems, als auch der Kanalverbindungen erfordert entsprechend hohe Klemmkraft, die an der gesamten Breitseite des Grundkƶrpers mit einer Vielzahl von Klemmstellen aufzubringen ist. Die Unterbrechung sƤmtlicher umlaufender Trennstege durch dazu senkrechte Trenn- bzw. StoƟflƤchen fĆ¼hrt zu Dichtungsproblemen zwischen dem Stegsystem und dem AuƟengehƤuse. Biegeverspannung der im StoƟsitz aneinander liegenden FlƤchen kann dazu fĆ¼hren, dass die Trennstege im Bereich der Trennfuge, wenn auch nur geringfĆ¼gig, zueinander versetzt sind. Ein solcher Versatz, der zum Beispiel in der GrĆ¶ĆŸenordnung von 1/10 mm liegt, fĆ¼hrt zu nicht tolerierbarer Undichtigkeit zwischen den freien StegrƤndern und dem AuƟengehƤuse. Dies hat in der Praxis zur Folge, dass Ć¼ber die Hƶhe des Grundkƶrpers die Zahl umlaufender Dichtstege erhƶht wird und/oder zusƤtzliche Dichtmittel vorgesehen werden, um den Grundkƶrper, die Deckelteile an dessen Breitseiten sowie die Haube des Durchlauferhitzers im Zusammenspiel hinsichtlich sƤmtlicher Dichterfordernisse aneinander anzupassen und aufeinander einzustellen. Diese MaƟnahmen beeintrƤchtigen insbesondere eine Serienfertigung. Sie sind mit Kosten verbunden und belassen dennoch Dichtungsprobleme. Hier soll die Erfindung Abhilfe schaffen.To equip known electric water heater of the type mentioned belongs to a monolithic middle part forming base body with two end faces forming broadsides, to each of which a lid edge part is attached in the impact seat over the entire surface of the broadside. The end faces form the opening edge surfaces. The front side is a separation and joint surface, which is bounded by a circumferential groove on the body, which is divided as such in joints of different directions along respective body sides. These joints are exclusively, according to the side names of the body, on the long sides, the front and the back of the body composite formed from the body and the lid edge parts free. As a result, the interface forming the seams is parallel with the opening edge surface and is transverse or perpendicular to the water channels directed. The lid edge portion sits in the manner of a disc against the opening edge surface, wherein the joints between the body edge webs and the cover edge webs are determined solely by the edges of the abutting surfaces between the lid edge portion and the body. This separation construction remains unsatisfactory in terms of sufficiently dense, defined and simple, jet water passage through the web system sealing seal. In addition, the pressure and water seal along the said bridge channels is impaired or associated with special sealing measures. The butt joint of the lid edge part with the main body, which is usually produced by screw connection, is particularly stressed on bending. The production of both the tightness of the web system, as well as the channel connections requires a correspondingly high clamping force, which is applied to the entire broad side of the body with a variety of clamping points. The interruption of all circumferential dividers by vertical separation or abutting surfaces leads to sealing problems between the web system and the outer housing. Biegeverspannung the abutting surfaces can cause the dividing webs in the region of the parting line, even if only slightly offset from each other. Such an offset, for example of the order of 1/10 mm, leads to unacceptable leakage between the free web edges and the outer housing. This has in practice the consequence that over the height of the body, the number of circumferential sealing webs is increased and / or additional sealing means are provided to adapt the body, the cover parts on the broad sides and the hood of the water heater in interaction with each other in terms of sealing requirements and to each other. These measures affect especially a series production. They involve costs and still leave sealing problems. Here is the invention to remedy the situation.

Danach bestehen Ziele der Erfindung darin, den gattungsgemƤƟen Durchlauferhitzer zu verbessern hinsichtlich einfacher Bauweise, der Dichteigenschaft des Stegsystems zwischen dem Grundkƶrper und dem AuƟengehƤuse und der Verbindung des Deckelrandteils mit der ƖffnungsrandflƤche. Insbesondere sollen verbesserte Serienfertigung, Kostenreduzierung der Herstellung und Verbesserung sƤmtlicher Dichtverbindungen erreicht werden.Thereafter, objectives of the invention are to improve the generic water heater in terms of simple design, the sealing property of the web system between the body and the outer casing and the connection of the lid edge portion with the opening edge surface. In particular, improved mass production, cost reduction of the production and improvement of all sealing compounds are to be achieved.

Die Ziele der Erfindung werden in Verbindung mit den Merkmalen des eingangs genannten elektrischen Durchlauferhitzers dadurch erreicht, dass das Stegsystem wenigstens einen von den querenden Trennfugen freien, einen Dichtsteg bildenden Kƶrperrandsteg umfasst, der die ƖffnungsrandflƤche fugenfrei passiert.The objectives of the invention are achieved in conjunction with the features of the above-mentioned electric instantaneous heater in that the web system comprises at least one free of the transverse joints, forming a sealing ridge body edge web that passes the opening edge surface without joints.

Besondere Merkmale der Erfindung bestehen darin, dass wenigstens ein an wenigstens einem monolithischen Bereich oder Teil des Grundkƶrpers ausgebildeter Dichtsteg des Stegsystems die ƖffnungsrandflƤche quert oder Ć¼berbrĆ¼ckt und dass dieser Dichtsteg durch keine das Deckelrandteil von dem Grundkƶrper trennende Trennfuge unterbrochen ist. Es ist erreicht, dass die AuƟenkontur des Grundkƶrpers entlang wenigstens einer Dichtlinie des fugenfreien Dichtstegs ohne Spalt vollstƤndig geschlossen ist. Auch sind zwischen dem Deckelrandteil und dem Grundkƶrper nur Trennfugen ausgebildet, die durch TrennflƤchen gebildet sind, die quer zu der ƖffnungsrandflƤche gerichtet sind. Diese TrennflƤchen kƶnnen zum Minimieren der Trennfugen im Formschluss aneinandergrenzen. Die TrennflƤchen kƶnnen aber auch relativ weit beabstandet sein, so dass mit Trennfugen dann rinnen- oder schachtartige Bereiche oder allgemein Trennbereiche/-rƤume zwischen den TrennflƤchen bezeichnet sind. Es resultieren mehrere Vorteile. Der fugenfreie, d.h. ohne querende Trennfuge durchgehende Steg vereinfacht die Bauform des Grundkƶrpers. Die Dichteigenschaft des Stegsystems ist verbessert, indem herkƶmmliche Fugenspalte zwischen Deckelrandteil und Grundkƶrper entfallen. Man vermeidet besondere Dichtanpassungen und zusƤtzliche Dichtmittel. Dies fĆ¼hrt insbesondere hinsichtlich Serienfertigung zu Kosteneinsparung und Montagevereinfachung. Dennoch ist die Dichtfunktion des Stegsystems zwischen dem Grundkƶrper und dem AuƟengehƤuse zuverlƤssig und definiert. Herkƶmmliche Passungenauigkeiten zwischen Dichtstegen sind beseitigt. Die Verbindung des Deckelteils mit dem Grundkƶrper ist verbessert.Particular features of the invention are that at least one sealing web of the web system formed on at least one monolithic region or part of the base body crosses or bridges the opening edge surface and that this sealing web is interrupted by no parting line separating the cover edge part from the main body. It is achieved that the outer contour of the base body is completely closed along at least one sealing line of the joint-free sealing web without gap. Also, only parting lines are formed between the lid edge part and the main body, which are formed by separating surfaces, which are directed transversely to the opening edge surface. These dividing surfaces can be adjacent to each other to minimize the joints. However, the parting surfaces can also be relatively widely spaced, so that with parting lines then channel or shaft-like areas or generally separation areas / spaces between the separating surfaces are designated. There are several advantages. The joint-free, i. without cross-dividing joint continuous web simplifies the design of the body. The sealing property of the web system is improved by eliminating conventional joint gaps between the lid edge portion and the base body. This avoids special density adjustments and additional sealants. This leads, in particular with regard to series production, to cost savings and simplification of assembly. Nevertheless, the sealing function of the web system between the main body and the outer housing is reliable and defined. Conventional mating inaccuracies between sealing webs are eliminated. The connection of the cover part with the main body is improved.

ZweckmƤƟig verlaufen der wenigstens eine fugenfreie Kƶrperrandsteg bzw. jeder fugenfreie Kƶrperrandsteg parallel mit der ƖffnungsrandflƤche. Der wenigstens eine fugenfreie Kƶrperrandsteg ist vorzugsweise Bestandteil eines einstĆ¼ckigen Grundkƶrpers. Der wenigstens eine fugenfreie Kƶrperrandsteg ist besonders vorteilhaft umlaufend an der Randseite des Grundkƶrpers ausgebildet. Ein derartiger umlaufender fugenfreier Kƶrperrandsteg kann in vorzugsweise paralleler Anordnung mit weiteren umlaufenden Randstegen durch SteglĆ¼cken unterbrochen sein. Es handelt sich um ein an sich bekanntes Wegelabyrinth zum AbfĆ¼hren von Kondenswasser aus dem Trockenraum in den Nassraum. Unter einem umlaufenden Randsteg wird allgemein ein Ć¼ber die gesamte Randseite an dem Grundkƶrper ausgebildeter Steg verstanden, der durch LabyrinthlĆ¼cken in mehrere Stege, die dann Abschnitte des umlaufenden Stegs bilden, unterteilt sein kann. An Kƶrperecken, die den umlaufenden Steg auch in Abschnitte unterteilen, ist er durchgƤngig bzw. ununterbrochen. Vorteilhaft weist das AuƟengehƤuse des Durchlauferhitzers einen umlaufenden GehƤuseinnenrand auf, der maƟgenau an den umlaufenden fugenfreien Kƶrperrandsteg derart angepasst ist, dass umlaufend, gegebenenfalls durch Formschluss, zwischen dem AuƟengehƤuse und dem fugenfreien Kƶrperrandsteg eine den Durchtritt von Strahlwasser sperrende Dichtpassung hergestellt ist.The at least one joint-free body edge web or each joint-free body edge web expediently run parallel to the opening edge surface. The at least one joint-free body edge web is preferably part of a one-piece main body. The at least one joint-free body edge web is particularly advantageously formed circumferentially on the edge side of the main body. Such a circumferential joint-free body edge web can in preferably parallel arrangement with further circumferential Edge webs to be interrupted by web gaps. It is a known Wegelabyrinth for discharging condensation water from the drying room in the wet room. Under a peripheral edge web is generally understood over the entire edge side formed on the base web formed, which can be divided by labyrinth gaps in a plurality of webs, which then form portions of the circumferential ridge. At body corners, which also divide the circumferential bridge into sections, it is continuous or uninterrupted. Advantageously, the outer casing of the water heater on a circumferential housing inner edge, which is adapted to the circumference seamless circumferential edge web such that circumferentially, optionally by positive engagement, between the outer casing and the jointless body edge web a passage of jet water blocking seal is made.

Eine Ausgestaltung besteht darin, dass zwischen dem fugenfreien Kƶrperrandsteg und dem Deckelrandteil eine mit dem fugenfreien Kƶrperrandsteg parallele Trennfuge ausgebildet ist. ZweckmƤƟig ist die parallele Trennfuge zwischen dem fugenfreien dichtenden Kƶrperrandsteg und einem damit parallelen Dichtsteg ausgebildet. Diese MaƟnahmen tragen zur besonderen Dichtung zwischen dem fugenfreien Kƶrperrandsteg und dem AuƟengehƤuse bei.One embodiment consists in that a parting line parallel to the joint-free body edge web is formed between the joint-free body edge web and the cover edge part. Suitably, the parallel parting line between the joint-free sealing body edge web and a parallel sealing web is formed. These measures contribute to the special seal between the joint-free body edge web and the outer housing.

In bevorzugter Gestaltung ist der fugenfreie Kƶrperrandsteg wenigstens durch einen Abschnitt einer das Deckelrandteil wenigstens teilweise, gegebenenfalls im Formsitz, auf nehmenden Einfassung gebildet, die an dem Grundkƶrper ausgebildet ist. ZweckmƤƟig weist die Kƶrpervorderseite des Grundkƶrpers einen Seitenrand auf, der den fugenfreien Kƶrperrandsteg ausbildet. Das Deckelrandteil kann in eine die ƖffnungsrandflƤche begrenzende Einfassung, die an dem Grundkƶrper ausgebildet ist, eingekapselt sein, insbesondere dort hineingesteckt sein.In a preferred embodiment, the joint-free body edge web is at least partially formed by a portion of the lid edge portion at least partially, optionally in the form of seat, on receiving frame, which is formed on the base body. Suitably, the body front side of the body has a side edge, which forms the joint-free body edge web. The lid edge part can be encapsulated in a border defining the opening edge surface, which is formed on the base body, in particular be inserted there.

GemƤƟ einer erfindungsgemƤƟen Gestaltung sind zwischen dem Grundkƶrper und dem Deckelrandteil Trennfugen ausgebildet, die Abschnitte einer die ƖffnungsrandflƤche vorzugsweise vollstƤndig, nƤmlich geschlossen umgrenzenden Ringtrennfuge sind. Ein Abschnitt der Ringtrennfuge wird vorteilhaft durch die genannte Paralleltrennfuge gebildet. Die Ringtrennfuge weist einen die DeckelauƟenseite wenigstens teilweise begrenzenden Innenrand auf, der quer zur ƖffnungsrandflƤche gerichtet ist.According to a design according to the invention, parting lines are formed between the main body and the lid edge part, which are sections of a ring-opening seam that is preferably completely, namely closed, surrounding the opening edge surface. A portion of the ring separation is advantageously formed by said parallel separation joint. The ring parting line has an outer edge at least partially delimiting the lid outer side, which is directed transversely to the opening edge surface.

Das Deckelrandteil kann in besonderer Weise ausgestaltet sein, um die Dichtfunktion des Stegsystems mit fugenfreiem, den wesentlichen Dichtsteg bildendem Kƶrperrandsteg weiter zu verbessern bzw. zu vereinfachen. Eine MaƟnahme kann darin bestehen, dass wenigstens in einem mittleren Bereich der DeckelauƟenseite ausgebildete Deckelrandstege mit Kƶrperrandstegen an der Kƶrperrandseite fluchten. Eine die Deckelrandstege tragende DeckelauƟenflƤche und eine AuƟenflƤche der Grundkƶrperrandseite, die an das Deckelrandteil angrenzt, kƶnnen stufenfrei in Ć¼bereinstimmender FlƤchenebene aneinander grenzen.The lid edge part can be configured in a special way in order to further improve or simplify the sealing function of the web system with joint-free body edge web forming the essential sealing web. One measure may be that at least in a central region of the lid outer side formed cover edge webs are aligned with body edge webs on the body edge side. A cover outer surface carrying the cover edge webs and an outer surface of the main body edge side which adjoins the cover edge part can adjoin one another steplessly in a matching surface plane.

Das Deckelrandteil kann in der Hƶhendimension des Grundkƶrpers hƶher als die Grundkƶrperrandseite ausgebildet sein. Insbesondere in Verbindung mit dieser Gestaltung kƶnnen an dem Deckelrandteil und in dessem Bereich an der Kƶrperrandseite in der Hƶhendimension nebeneinander angeordnete Rippen ausgebildet sein, deren Zahl grĆ¶ĆŸer ist als die von entsprechend angeordneten Rippen in Abschnitten der Kƶrperrandseite, die an das Deckelrandteil angrenzen. Die Steifigkeit an der mit dem Deckelrandteil versehenen Kƶrperrandseite bzw. insbesondere an der Breitseite des Grundkƶrpers wird durch solche Rippen erhƶht. Vorteilhaft umfassen die genannten Rippen Dichtstege des Stegsystems, deren Zahl in dem dem Deckelrandteil entsprechenden Abschnitt grĆ¶ĆŸer ist als in Abschnitten, die an das Deckelrandteil angrenzen.The lid edge part may be formed higher than the main body edge side in the height dimension of the base body. In particular, in connection with this configuration may be formed on the lid edge portion and in its area on the body edge side in the height dimension juxtaposed ribs whose number is greater than that of correspondingly arranged ribs in portions of the body edge side adjacent to the lid edge portion. The rigidity at the body edge side provided with the lid edge part or in particular at the broad side of the main body is increased by such ribs. Advantageously, said ribs comprise sealing webs of the web system whose number is greater in the section corresponding to the cover edge part than in sections which adjoin the cover edge part.

Nach einer Gestaltung ist der wenigstens eine fugenfreie Kƶrperrandsteg ein in der Hƶhendimension des Grundkƶrpers an der Kƶrperrandseite ƤuƟerer, zur Kƶrpervorderseite hin gelegener Steg. In Verbindung mit der genannten umlaufenden Stegausbildung und -anordnung erreicht man, dass der Rand oder die RandflƤche der Vorderseite des Grundkƶrpers im Zusammenwirken mit dem AuƟengehƤuse die umlaufende Stegdichtung zwischen dem AuƟengehƤuse und dem Grundkƶrper ausbilden.According to one embodiment, the at least one joint-free body edge web is an in the height dimension of the body on the body edge side outer, located towards the front of the body web. In conjunction with the aforementioned circumferential web formation and arrangement, it is achieved that the edge or the edge surface of the front side of the main body, in cooperation with the outer housing, form the circumferential web seal between the outer housing and the main body.

Die erfindungsgemƤƟe Lƶsung ist allgemein fĆ¼r jede mit Deckelrandteil geschlossene gedichtete ƖffnungsrandflƤche des Grundkƶrpers eines Durchlauferhitzers vorgesehen. Besonders vorteilhaft sind die erfindungsgemƤƟen MaƟnahmen bei einem Durchlauferhitzer, der zwei einander gegenĆ¼berliegende Breitseiten umfasst, in die jeweils ein gegen die zugehƶrige ƖffnungsrandflƤche gesetztes Deckelrandteil eingefasst ist. Insbesondere sind in an sich bekannter Weise in dem Grundkƶrper sich in seiner LƤngsdimension erstreckende, vorzugsweise parallele WasserkanƤle ausgebildet, die in beiden ƖffnungsrandflƤchen offen sind und den genannten Hohlraum bilden, wobei die Deckelrandteile zusammen mit den ƖffnungsrandflƤchen BrĆ¼ckenkanƤle ausbilden, durch die jeweils in den ƖffnungsrandflƤchen benachbarte Kanalƶffnungen fĆ¼r Wasserdurchgang gedichtet miteinander verbunden sind.The solution according to the invention is generally provided for each sealed edge edge area closed sealed edge surface of the body of a water heater. The measures according to the invention are particularly advantageous in the case of a continuous flow heater, which comprises two opposite broad sides, in each of which a cover edge part set against the associated opening edge surface is enclosed. Especially are in a conventional manner in the base body in its longitudinal dimension extending, preferably parallel water channels formed which are open in both opening edge surfaces and form the said cavity, wherein the cover edge portions form together with the opening edge surfaces bridge channels, through the respectively adjacent in the opening edge surfaces channel openings sealed together for passage of water.

Der erfindungsgemƤƟe Durchlauferhitzer, der wenigstens ein ein Dichtungselement bildendes Deckelrandteil umfasst, das mit Dichtstegen einen Teil des Stegsystems bildet, erlaubt eine besonders vorteilhafte Ausbildung und Anordnung des Deckelrandteils. An wenigstens einem Randseitenabschnitt des Grundkƶrpers kann die ƖffnungsrandflƤche so angeordnet und ausgebildet sein, dass die ƖffnungsrandflƤche mit zugehƶrigem Deckelrandteil einen Teil des Kƶrperrandabschnitts ausbildet, der nur ca. 1/4 bis 2/3 des gesamten Randseitenabschnitts einnimmt. Bei dem Kƶrperrandabschnitt handelt es sich insbesondere um die bzw. jede Breitseite des Grundkƶrpers, der im Ɯbrigen LƤngsseiten als weitere Randseitenabschnitte aufweist. Allgemein bringt die Ausbildung des Deckelrandteils in Verbindung mit dem wenigstens einen durchgehenden, fugenfreien Kƶrperrandsteg als Teil des Kƶrperrandabschnitts, insbesondere der Breitseite, den Vorteil mit sich, dass das Deckelteil mit relativ geringer AbdeckflƤche in zuverlƤssigem Dichtsitz in eine zugehƶrigen Einfassung eingefasst ist und dennoch einfach, nƤmlich mit relativ wenig Befestigungspunkten befestigt werden kann. Ein erheblicher Vorteil besteht in der Reduzierung des Deckelrandteils bzw. der ƖffnungsrandflƤche auf nur ca. 1/4 bis 2/3 des gesamten Kƶrperrandabschnitts, wƤhrend herkƶmmliche Grundkƶrper des gattungsgemƤƟen Durchlauferhitzers Deckelrandteile aufweisen, die jeweils die gesamte Breitseite des Grundkƶrpers ausbilden. Dabei bleibt die AuƟenkontur des Grundkƶrpers mittels des fugenfreien Kƶrperrandstegs lƤngs der Breitseite bzw. allgemein eines Abschnitts einer Kƶrperrandseite in sich geschlossen.The instantaneous water heater according to the invention, which comprises at least one cover edge part forming a sealing element, which forms a part of the web system with sealing webs, permits a particularly advantageous design and arrangement of the lid edge part. On at least one edge side portion of the base body, the opening edge surface may be arranged and formed such that the opening edge surface with associated lid edge portion forms a part of the body edge portion occupying only about 1/4 to 2/3 of the entire edge side portion. The body edge section is, in particular, the or each broad side of the basic body which, moreover, has longitudinal sides as further edge side sections. In general, the formation of the lid edge part in conjunction with the at least one continuous, joint-free body edge web as part of the body edge section, in particular the broad side, entails the advantage that the cover part is enclosed with a relatively small cover surface in a reliable sealing seat in an associated enclosure and yet easy, namely with relatively little attachment points can be attached. A considerable advantage consists in the reduction of the lid edge portion or the opening edge surface to only about 1/4 to 2/3 of the entire body edge portion, while conventional basic body of the generic water heater cover edge portions have, each forming the entire broad side of the body. In this case, the outer contour of the body remains closed by means of the joint-free body edge web along the broad side or generally a portion of a body edge side in itself.

Auf die genannten und noch andere zweckmƤƟige und vorteilhafte Ausgestaltungen der Erfindung sind UnteransprĆ¼che gerichtet. Lediglich besonders zweckmƤƟige und vorteilhafte Ausbildungsformen und -mƶglichkeiten werden anhand der folgenden Beschreibung der in der schematischen Zeichnung dargestellten AusfĆ¼hrungsbeispiele nƤher beschrieben. Jede beschriebene Einzel- oder Detailgestaltung innerhalb eines AusfĆ¼hrungsbeispiels ist als unabhƤngiges Detailbeispiel fĆ¼r andere nicht oder nicht vollstƤndig beschriebene, unter die Erfindung fallende AusfĆ¼hrungen und Gestaltungen zu verstehen.In the above-mentioned and still other advantageous and advantageous embodiments of the invention, subclaims are directed. Only particularly expedient and advantageous forms and possibilities of training will be described with reference to the following description of the exemplary embodiments illustrated in the schematic drawing. Each described individual or detailed design within an embodiment is to be understood as an independent detail example of other not or not fully described, falling under the invention designs and designs.

Es zeigenShow it

Fig. 1Fig. 1
in Breitseitenansicht mit teilweise weggeschnittenem AuƟengehƤuse einen erfindungsgemƤƟen Durchlauferhitzer,in broadside view with partially cutaway outer housing a flow heater according to the invention,
Fig. 2Fig. 2
in Breitseitenansicht den Grundkƶrper des Durchlauferhitzers gemƤƟ Fig. 1,in broadside view the body of the water heater according to Fig. 1 .
Fig. 3Fig. 3
in LƤngsansicht den Grundkƶrper gemƤƟ III-III in Fig. 2,in longitudinal view of the basic body according to III-III in Fig. 2 .
Fig. 4Fig. 4
in Breitseitenansicht den Grundkƶrper gemƤƟ Fig. 2 mit abgenommenem Deckelrandteil undin broadside view the body according to Fig. 2 with removed cover edge part and
Fig. 5A und 5BFigs. 5A and 5B
axonometrische Ansichten des in Fig. 2 angesetzten Deckelrandteils.axonometric views of the in Fig. 2 attached lid edge portion.

Ein in Fig. 1 bis 4 dargestellter elektrischer Durchlauferhitzer 1 umfasst ein als Haube vorgesehenes AuƟengehƤuse 12, ein rahmenfƶrmiges GehƤuserĆ¼ckteil 13 und einen monolithischen Grundkƶrper 2 mit Kƶrpervorderseite 21, KƶrperrĆ¼ckseite 22 und zwischen der Kƶrpervorderseite 21 und der KƶrperrĆ¼ckseite 22 umlaufender Kƶrperrandseite 23. Die KƶrperrĆ¼ckseite 22 kann auch als dem Trockenraum abgewandte AuƟenseite bezeichnet werden. Die Grundform des Durchlauferhitzers 1 ist im Wesentlichen quaderfƶrmig. Entsprechend ist die Grundform des Grundkƶrpers 2 quaderfƶrmig mit jeweils einander gegenĆ¼berliegenden LƤngsseiten 231 und Breitseiten 232, die Abschnitte der umlaufenden Randseite 23 sind. Die LƤngsseiten 231 sowie die Breitseiten 232 erstrecken sich in LƤngsdimension L bzw. Breitendimension B, und die Randseite 23 liegt in Hƶhendimension H. Der Grundkƶrper 2 ist zweckmƤƟig ein aus Kunststoff gespritztes Teil. Der Grundkƶrper 2 kann auch aus anderem Material gebildet sein, in dem sich Wasser fĆ¼hrende KanƤle 5 ausbilden lassen und das ausreichende Festigkeits- und elektrische Isolationseigenschaften aufweist. Die KanƤle 5 sind Bestandteil eines Kanalsystems, an das eine in dessen Wegmitte angeschlossenes, Wasser durchleitendes Heizelement, z.B. eine Heizkartusche 15 angeschlossen ist.An in Fig. 1 to 4 illustrated electrical water heater 1 comprises a hood provided as outer housing 12, a frame-shaped housing back 13 and a monolithic body 2 with body front 21, body back 22 and between the body front 21 and the body back 22 circumferential body edge side 23. The body back 22 can also be used as the drying space facing away from the outside be designated. The basic shape of the water heater 1 is substantially cuboid. Accordingly, the basic shape of the base body 2 is parallelepiped-shaped, each having opposite longitudinal sides 231 and broad sides 232, which are sections of the peripheral edge side 23. The longitudinal sides 231 and the broad sides 232 extend in the longitudinal dimension L or width dimension B, and the edge side 23 is in height dimension H. The main body 2 is expediently a molded plastic part. The main body 2 may also be formed of other material in which water leading channels 5 can be formed and the sufficient strength and electrical Has insulating properties. The channels 5 are part of a channel system to which a connected in the middle of his path, water-conducting heating element, such as a heating cartridge 15 is connected.

Wie aus Fig. 1 ersichtlich, unterteilt der Grundkƶrper 2 den Durchlauferhitzer 1 in einen Trockenraum 101 und einen Nassraum oder Nassbereich 102. Der Trockenraum 101 wird von dem AuƟengehƤuse 12 Ć¼berdeckt, wƤhrend der Nassbereich 102 von dem Rahmen des GehƤuserĆ¼ckteils 13 umgeben ist. Die RĆ¼ckseite 22 des Grundkƶrpers 2 ist eine AuƟenseite und bildet eine RĆ¼ckwand 11 des Durchlauferhitzers 1.How out Fig. 1 As can be seen, the main body 2 divides the water heater 1 into a drying room 101 and a wet room or wet area 102. The drying room 101 is covered by the outer housing 12, while the wet area 102 is surrounded by the frame of the housing rear part 13. The rear side 22 of the main body 2 is an outer side and forms a rear wall 11 of the flow heater 1.

Eine elektrische Heizeinrichtung zum ErwƤrmen von durchlaufendem Wasser ist an der Innenseite oder Vorderseite 21 des Grundkƶrpers 2 angeordnet. Es sind nur einige Bauteile und Bestandteile dieser Heizeinrichtung dargestellt, nƤmlich insbesondere eine Leiterplatte 14 und die mit einem Heizelement, z.B. einem blanken Heizdraht bestĆ¼ckte, Wasser durchleitende Heizkartusche 15. Die Heizeinrichtung kann anders gestaltet sein und ist nicht Gegenstand der vorliegenden Erfindung. Der Heizeinrichtung sind allerdings die genannten WasserkanƤle 5 zugeordnet, die in dem Grundkƶrper 2 einen Hohlraum 24 ausbilden. Wie aus Fig. 4 ersichtlich, erstrecken sich die WasserkanƤle 5 in der LƤngsdimension L parallel. Die WasserkanƤle 5 sind am Grundkƶrper 2 an beiden Breitseiten 232 jeweils in einer RandflƤche 25, die Bestandteil des monolithischen Grundkƶrpers 2 ist, mit Ɩffnungen 51, die eine Gesamtƶffnung 50 bilden, offen. Fig. 4 zeigt die eine Breitseite 232 des Grundkƶrpers 2. Die andere Breitseite ist entsprechend mit entsprechender Grundform der ƖffnungsrandflƤche 25 gestaltet. Die WasserkanƤle 5 erstrecken sich also zwischen den beiden ƖffnungsrandflƤchen 25, zu denen sie quer, im AusfĆ¼hrungsbeispiel senkrecht gerichtet sind. An den ƖffnungsrandflƤchen 25 sind die Ɩffnungen 51 der WasserkanƤle 5 zur Ausbildung des Kanalsystems verbunden. Die Kanalverbindung an der einen Breitseite 232 geht aus Fig. 4, 5A und 5B hervor. Benachbarte Kanalƶffnungen 51 bzw. Kanalenden sind paarweise jeweils Ć¼ber einen BrĆ¼ckenkanal miteinander verbunden.An electric heater for heating continuous water is disposed on the inside or front side 21 of the main body 2. There are shown only a few components and components of this heater, namely in particular a printed circuit board 14 and equipped with a heating element, such as a bare heating wire, water-conducting heating cartridge 15. The heater may be designed differently and is not the subject of the present invention. The heater, however, the said water channels 5 are assigned, which form a cavity 24 in the base body 2. How out Fig. 4 As can be seen, the water channels 5 extend in the longitudinal dimension L in parallel. The water channels 5 are open on the base body 2 on both broad sides 232 in each case in an edge surface 25, which is part of the monolithic base body 2, with openings 51 which form an overall opening 50. Fig. 4 shows the one broad side 232 of the base body 2. The other broadside is designed accordingly with the corresponding basic shape of the opening edge surface 25. The water channels 5 thus extend between the two opening edge surfaces 25, to which they are directed transversely, in the embodiment vertically. At the opening edge surfaces 25, the openings 51 of the water channels 5 are connected to form the channel system. The channel connection on one broadside 232 goes out Fig. 4 . 5A and 5B out. Adjacent channel openings 51 and channel ends are connected to each other in pairs via a bridge channel.

Der Durchlauferhitzer 1 umfasst weiterhin Deckel bildende monolithische Randteile, die als Deckelrandteile 3 bezeichnet werden. Zu jeder ƖffnungsrandflƤche 25 gehƶrt ein Deckelrandteil 3 mit einer an die ƖffnungsrandflƤche 25 angepassten korrespondierenden InnenflƤche 321 an der Deckelinnenseite 32. Die Deckelteile 3 sind zweckmƤƟig aus Kunststoff gefertigte Spritzteile.The water heater 1 further comprises cover-forming monolithic edge portions, which are referred to as lid edge portions 3. For each opening edge surface 25 includes a lid edge portion 3 with a matched to the opening edge surface 25 corresponding Inner surface 321 on the inside of the cover 32. The cover parts 3 are suitably made of plastic injection molded parts.

In der ƖffnungsrandflƤche 25 sind BrĆ¼ckenkanalhƤlften 28 und in dem Deckelrandteil 3 korrespondierende BrĆ¼ckenkanalhƤlften 38 ausgebildet. Die BrĆ¼ckenkanalhƤlften 28, 38 kommen gedichtet aneinander zu liegen. Eine wasser- und druckdichte Dichtung kann jeweils der Halbform der KanalhƤlften 28, 38 entsprechende Randdichtringe 331 umfassen, die Bestandteile einer Dichtmatte 33 od. dgl. Dichtelement sein kƶnnen, das zwischen dem Grundkƶrper 2 und dem Deckelrandteil 3 eingefĆ¼gt ist.In the opening edge surface 25 bridge channel halves 28 and in the cover edge part 3 corresponding bridge channel halves 38 are formed. The bridge channel halves 28, 38 come sealed to each other. A watertight and pressure-tight seal can in each case comprise the half-form of the channel halves 28, 38 corresponding edge sealing rings 331, the components od a sealing mat 33 od. Like. Can be sealing element which is inserted between the base body 2 and the lid edge part 3.

Die Randseite 23 des Grundkƶrpers 2 ist umlaufend mit einem Stegsystem 4 ausgestattet, das zwischen den Grundkƶrper 2 und das AuƟengehƤuse 12 eingepasst ist. Mittels des Stegsystems 4 ist der Trockenraum 101 von dem Nassbereich 202 abgetrennt. Die Abtrennung ist derart, dass sie den Durchtritt von Tropfwasser, Spritzwasser und/oder Strahlwasser sperrt. Eine solche Abdichtung, die nachfolgend noch nƤher in Verbindung mit erfindungsgemƤƟen MaƟnahmen erlƤutert wird, ist an sich bekannt.The edge side 23 of the main body 2 is peripherally equipped with a web system 4, which is fitted between the base body 2 and the outer housing 12. By means of the web system 4, the drying space 101 is separated from the wet area 202. The separation is such that it blocks the passage of dripping water, spray water and / or jet water. Such a seal, which will be explained in more detail below in connection with measures according to the invention, is known per se.

Das Stegsystem 4 umfasst an der Hƶhenseite des Grundkƶrpers 1 Dichtstege 41, nƤmlich umlaufende Dichtstege 411,412 und 413. Die umlaufenden Dichtstege 411, 412 und 413 bzw. zugehƶrige Abschnitte oder Stege verlaufen parallel und sind in der Hƶhendimension H mit zumindest im Wesentlichen gleichen AbstƤnden angeordnet. Die AbstƤnde kƶnnen unterschiedlich sein, und auch ein SchrƤgverlauf zu den LƤngsrƤndern des Grundkƶrpers 2 ist mƶglich.The web system 4 comprises at the height side of the main body 1 sealing webs 41, namely circumferential sealing webs 411,412 and 413. The circumferential sealing webs 411, 412 and 413 or associated sections or webs are parallel and are arranged in the height dimension H with at least substantially equal distances. The distances may be different, and also a skew to the longitudinal edges of the base body 2 is possible.

Die umlaufenden Dichtstege 411, 412 und 413 umfassen Kƶrperrandstege 26, die einstĆ¼ckig mit dem Grundkƶrper 2 ausgebildet sind, sowie Deckelrandstege 36, die jeweils an der DeckelauƟenseite 31 der Deckelrandteile 3 ausgebildet sind. Die Dichtstege 26, 36 sind in der Hƶhendimension H flach, und sie stehen an der Kƶrperrandseite 23 bzw. den Deckelrandteilen 3 gleichermaƟen hervor, um mit ihren SchmalrƤndern zwischen sich und der Innenseite des AuƟengehƤuses 12 Strahlwasserdurchtritt sperrende Dichtspalte auszubilden.The circumferential sealing webs 411, 412 and 413 comprise body edge webs 26, which are formed integrally with the base body 2, and cover edge webs 36, which are each formed on the lid outer side 31 of the lid edge parts 3. The sealing webs 26, 36 are flat in the height dimension H, and they protrude equally on the body edge side 23 and the lid edge parts 3 in order to form with their narrow edges between them and the inside of the outer housing 12 jet water passage blocking sealing gaps.

Im AusfĆ¼hrungsbeispiel ist erfindungsgemƤƟ der umlaufende Dichtsteg 411 als Kƶrperrandsteg 26 ausgebildet, der durch keine Trennfuge zwischen dem Grundkƶrper 2 und den Deckelrandteilen 3 unterbrochen ist. Dies wird aus Fig. 1 und 2 deutlich. Der umlaufende Dichtsteg 411 umfasst nƤmlich an jeder Breitseite 232 im monolithischen Bereich des Grundkƶrpers 2 als Stegabschnitt einen fugenfreien Kƶrperrandsteg 261, der als solcher ohne Trenn-/Dichtfuge Bestandteil des umlaufenden Dichtstegs 411 ist und die ƖffnungsrandflƤche 25 fugenfrei passiert.In the exemplary embodiment, the circumferential sealing web 411 is formed according to the invention as a body edge web 26 which is interrupted by no parting line between the base body 2 and the lid edge parts 3. This is going out Fig. 1 and 2 clear. Namely, the circumferential sealing web 411 comprises, at each broad side 232 in the monolithic region of the base body 2, a joint-free body edge web 261, which as such is part of the circumferential sealing web 411 without a separating / sealing joint and the opening edge surface 25 passes without joints.

Der fugenfreie Kƶrperrandsteg 261 umfasst einen Abschnitt einer das Deckelrandteil 3 aufnehmenden Einfassung 29, die einen die ƖffnungsrandflƤche 25 begrenzenden und umgebenden an ihr hervorstehenden Aufnahmerand bildet, in den das Deckelrandteil 3 insbesondere als Steckteil versenkt und gegebenenfalls formschlĆ¼ssig eingefĆ¼gt ist.The joint-free body edge web 261 comprises a portion of the lid edge portion 3 receiving skirt 29, which forms the opening edge surface 25 bounding and surrounding projecting on her receiving edge, in which the lid edge portion 3 is sunk in particular as a plug-in part and optionally inserted positively.

Der Aufnahmerand der Einfassung 29 bildet eine umlaufende geschlossene TrennflƤche 291 aus, die senkrecht zu der ƖffnungsrandflƤche 25 gerichtet ist. Das Deckelrandteil 3 weist einen Deckelrand 39 mit einer TrennflƤche 391 auf, die zu der TrennflƤche 291 komplementƤr ist bzw. dieser entspricht. Wie insbesondere aus Fig. 2 und 4 ersichtlich, bildet die Einfassung 29 mit dem darin sitzenden Deckelrandteil 3 zwischen den TrennflƤchen 291, 391 einen umlaufenden Trennspalt, nƤmlich eine umlaufende Ringtrennfuge 273 aus, die als solche ausschlieƟlich an der Breitseite 232, d.h. an der das Deckelrandteil 3 aufweisenden Kƶrperrandseite 23 mit den quer zu dieser bzw. zur ƖffnungsrandflƤche 25 gerichteten TrennflƤchen 291, 391 die einzige Trennfuge 27 zwischen dem Grundkƶrper 2 und dem Deckelrandteil 3 bildet. Insbesondere darin besteht allgemein ein Merkmal der Erfindung.The receiving edge of the enclosure 29 forms a circumferential closed separation surface 291, which is directed perpendicular to the opening edge surface 25. The lid edge part 3 has a lid edge 39 with a separating surface 391 which is complementary to the separating surface 291 or corresponds to it. As in particular from Fig. 2 and 4 seen, the enclosure 29 forms with the seated lid edge part 3 between the parting surfaces 291, 391 a circumferential separation gap, namely a circumferential ring parting line 273, as such exclusively on the broadside 232, ie on the lid edge portion 3 having the body edge side 23 with the transverse For this or the opening edge surface 25 directed separating surfaces 291, 391 forms the only parting line 27 between the base body 2 and the lid edge part 3. In particular, therein is generally a feature of the invention.

Die Ringtrennfuge 273 umfasst erste Abschnitte, nƤmlich Quertrennfugen 272, die die umlaufenden Dichtstege 412, 413 queren. Ein Abschnitt der Ringtrennfuge 273 ist durch eine Paralleltrennfuge 271 gebildet, die sich parallel mit dem Kƶrperrandsteg 261 neben diesem erstreckt. An der AuƟenseite des Grundkƶrpers 2 umfasst die Ringtrennfuge 273 eine AuƟenrand-Trennfuge 275, die Endabschnitte der Quertrennfugen 272 umfasst und im Ɯbrigen im Wesentlichen parallel zu den Dichtstegen 411, 412 und 413 verlƤuft. Im AusfĆ¼hrungsbeispiel bilden vorteilhaft sƤmtliche Abschnitte der Ringtrennfuge 273 Dichtungen, die das Eindringen von Strahlwasser verhindern.The ring parting line 273 comprises first sections, namely transverse parting lines 272, which traverse the circumferential sealing webs 412, 413. A portion of the ring parting line 273 is formed by a parallel parting line 271 which extends in parallel with the body edge land 261 adjacent thereto. On the outer side of the main body 2, the annular separation joint 273 comprises an outer edge parting line 275, which comprises end sections of the transverse parting lines 272 and, moreover, extends substantially parallel to the sealing webs 411, 412 and 413. In the exemplary embodiment, advantageously all sections of the ring-separating joint 273 form seals which prevent the penetration of jet water.

Zum Beispiel ist das Deckelrandteil 3, wie dargestellt, besonders ausgesteift. Es umfasst einen Zusatzsteg 362, der die Paralleltrennfuge 271 in der LƤngsdimension L verbreitert. Zudem ist an dem Deckelrandteil 3 ein weiterer Zusatzsteg 363 ausgebildet, der fluchtend mit auƟerhalb der ƖffnungsrandflƤche 25 bzw. des Deckelrandteils 3 verlaufenden Abschnitten des Dichtstegs 411 angeordnet ist. Dichtstege 364 des Deckelrandteils 3 fluchten mit Kƶrperrandstegen 264 der umlaufenden Dichtstege 412 und 413. Mit den Dichtstegen 261, 362, 363 und 364 weist in der Hƶhendimension eine grĆ¶ĆŸere Zahl Rippen als an den angrenzenden Kƶrperrandseiten auf.For example, as shown, the lid rim portion 3 is particularly stiffened. It comprises an additional web 362 which widens the parallel parting line 271 in the longitudinal dimension L. In addition, on the cover edge part 3, a further additional web 363 is formed, which is arranged in alignment with outside of the opening edge surface 25 and the lid edge portion 3 extending portions of the sealing web 411. Sealing webs 364 of the lid edge part 3 are aligned with body edge webs 264 of the circumferential sealing webs 412 and 413. With the sealing webs 261, 362, 363 and 364 has in the height dimension a larger number of ribs than at the adjacent body edge sides.

Wie aus Fig. 1 bis 3 ersichtlich, weist das Deckelrandteil 3 eine DeckelauƟenflƤche 310 auf, die stufenfrei in Ć¼bereinstimmender FlƤchenebene an eine entsprechende AuƟenflƤche 230 der Grundkƶrperrandseite 3 angrenzt.How out Fig. 1 to 3 As can be seen, the lid edge part 3 has a lid outer surface 310 which adjoins a corresponding outer surface 230 of the main body edge side 3 without steps in a matching surface plane.

Der umlaufende Dichtsteg 411, der die fugenfreien Kƶrperrandstege 261 an den Breitseiten 232 umfasst und lƤngs der gesamten Randseite 23 und an Ecken des Grundkƶrpers 2 auch im Ɯbrigen frei von Fugen zwischen den Deckelteilen 3 und dem Grundkƶrper 2 ist, ist im AusfĆ¼hrungsbeispiel ein in der Hƶhendimension H des Grundkƶrpers 2 an der Kƶrperrandseite 23 ƤuƟerer, an der Kƶrpervorderseite 21 zum Trockenraum 101 hin gelegener Steg. Die Kƶrpervorderseite 21 des Grundkƶrpers 2 weist einen FlƤchenrand 211 auf, der umlaufend den Dichtsteg 411 bzw. die Kƶrperrandstege 261 ausbildet. Im AusfĆ¼hrungsbeispiel ist ein umlaufender Innenrand 121 des AuƟengehƤuses 12 besonders auf den umlaufenden Dichtsteg 411 derart maƟgenau angepasst, dass der umlaufende Dichtsteg 411 und das AuƟengehƤuse 12 eine die Dichtung zumindest im Wesentlichen bestimmende umlaufende Dichtpassung des Stegsystems 4 bilden. Um den GehƤuseinnenrand 12 genau mit dem umlaufenden Dichtsteg 411 auszurichten, wird zum Beispiel, wie dargestellt, an der RĆ¼ckseite 22 des Grundkƶrpers 2 ein vorspringender Justierrand 221 vorgesehen, auf dem das AuƟengehƤuse 12 mit freiem Rand formschlĆ¼ssig aufsitzt.The circumferential sealing web 411, which comprises the joint-free body edge webs 261 on the broad sides 232 and along the entire edge side 23 and at corners of the base body 2, moreover, free of joints between the cover parts 3 and the base body 2 is in the embodiment in a height dimension H of the base body 2 on the body edge side 23 outer, on the body front side 21 to the drying room 101 located down web. The body front side 21 of the base body 2 has a surface edge 211 which circumferentially forms the sealing web 411 or the body edge webs 261. In the exemplary embodiment, a circumferential inner edge 121 of the outer housing 12 is particularly adapted to the circumferential sealing web 411 dimensionally accurate, that the circumferential sealing web 411 and the outer housing 12 form a seal sealing the web system 4 at least substantially defining the circumferential. In order to align the housing inner edge 12 exactly with the circumferential sealing web 411, for example, as shown, on the back 22 of the base body 2, a projecting Justierrand 221 is provided, on which the outer housing 12 is positively seated with free edge.

Wie aus Fig. 1, 2 und 4 ersichtlich, weist die ƖffnungsrandflƤche 25 mit dem zugehƶrigen Deckelrandteil 3 einen Teil der Breitseite 232 des Grundkƶrpers 2 auf, der nur ca. eine HƤlfte der Breitseite 232 einnimmt. Zudem ist das Deckelrandteil 3 in der Hƶhendimension H hƶher als die Grundkƶrperrandseite 23 auƟerhalb des Deckelrandteils 3 ausgebildet. Der fugenfreie Kƶrperrandsteg 261 bzw. der daran angrenzende Zusatzsteg 362 bilden einen innenseitig vorstehenden, erhƶhten Bereich an der Vorderseite 21 des Grundkƶrpers 2. Andererseits ragen die Deckelrandteile 3 auch an der RĆ¼ckseite 22 des Grundkƶrpers 2 hervor. Man erkennt, dass der durch die WasserkanƤle 5 gebildete Hohlraum 24 bzw. Hohlraumbereich einem Bereich des Grundkƶrpers 2 entspricht, in dem die WasserkanƤle 5 Ć¼ber mehrere Hƶhenlagen, im AusfĆ¼hrungsbeispiel in drei Hƶhenlagen, in dichter Packung im Wesentlichen in der einen HƤlfte des Grundkƶrpers 2 angeordnet sind, wƤhrend die andere GrundkƶrperhƤlfte relativ flach bleibt und freien Raum zur Aufnahme von Bauteilen der Heizeinrichtung belƤsst.How out Fig. 1 . 2 and 4 can be seen, the opening edge surface 25 with the associated lid edge part 3 on a part of the broad side 232 of the base body 2, which occupies only about one half of the broad side 232. In addition, the lid edge part 3 in the height dimension H higher than the main body edge side 23 outside the lid edge part 3 is formed. The joint-free body edge web 261 and the adjoining additional web 362 form an inside projecting, elevated area on the front side 21 of the body 2. On the other hand protrude the lid edge parts 3 also on the back 22 of the body 2. It can be seen that the cavity 24 or cavity area formed by the water channels 5 corresponds to a region of the main body 2, in which the water channels 5 are arranged in multiple layers, in the embodiment in three vertical positions, in a dense packing substantially in one half of the main body 2 while the other body half remains relatively flat and leaves free space for receiving heater components.

Die GrundflƤchen der Deckelrandteile 3 bzw. die ƖffnungsrandflƤchen 25 entsprechen dem breitseitigen Anordnungsquerschnitt der KanƤle 5. Dieser Anordnungsquerschnitt ist im AusfĆ¼hrungsbeispiel trapezƤhnlich, und zwar in der Begrenzung durch die Quertrennfugen 272 und durch diese verbindende parallele Abschnitte der Fugen 271 bzw. 275 der Ringtrennfuge 273. Die Querdichtfugen 272 bilden zwei nicht parallele Seiten und die parallelen Abschnitte der Fugen 271, 275 parallele Seiten der Trapezform. Dabei ist das ƜbereinstimmungsverhƤltnis der LƤngen von vertikaler (Hƶhen-)Normalachse 251 und horizontaler Normalachse 252 der FlƤchen- bzw. Trapezform nicht kleiner als 50% und vorzugsweise nicht kleiner als 55%, wobei die beiden Normalachsen 251, 252 rechtwinklig aufeinanderstehende Mittenachsen mit die FlƤchenform aufspannenden HalblƤngen sind (Fig. 4). Diese Ausgestaltung, wie sie mit der trapezƤhnlichen FlƤchenform beispielhaft dargestellt ist, hat in Verbindung mit dem fugenfreien Kƶrperrandsteg 261 den besonderen Vorteil, dass das Deckelrandteil 3 besonders verspannungsarm in der Einfassung 29 sitzt, wobei zum Beispiel, wie dargestellt, eine fixierende Verbindung zwischen dem Grundkƶrper 2 und dem Deckelteil 3 durch nur vier Befestigungsstellen, im Beispiel mittels Schraubverbindung, verwirklicht ist. Solche Befestigungsstellen sind Ć¼ber die Ringtrennfuge 273 der Zahl nach minimiert und vorzugsweise zumindest gemƤƟ entsprechenden Abschnitten weitgehend gleich verteilt. Zum Beispiel befinden sich die Befestigungsstellen ausschlieƟlich in Eckbereichen von ƖffnungsrandflƤchen, zum Beispiel, wie dargestellt, in den Eckbereichen der trapezfƶrmigen FlƤche. Die MaƟnahmen sorgen dafĆ¼r, dass auch die mit Quertrennfugen 272 unterbrochenen Dichtstege in Verbindung mit den fugenfreien Kƶrperrandstegen 261 in besonderem MaƟ zur zuverlƤssigen und definierten Dichtung mittels des Stegsystems 4 beitragen. Durch die genannten MaƟnahmen und/oder die beschriebene Aus-/Versteifung mit zusƤtzlichen Rippen ist auch die Mƶglichkeit erƶffnet, in der Hƶhendimension H wenigstens einen Dichtsteg, im AusfĆ¼hrungsbeispiel den mittleren Dichtsteg 412 zu unterbrechen, um wenigstens einen Labyrinthdurchgang 42 fĆ¼r Kondenswasser auszubilden. Im Ɯbrigen sind, wie dies an sich bekannt ist, LabyrinthdurchgƤnge oder -lĆ¼cken 43 in den umlaufenden Dichtstegen 411, 412, 413 ausgebildet.This arrangement cross-section is trapezoidal in the embodiment, in the boundary by the cross-dividing joints 272 and connecting them by parallel sections of the joints 271 and 275 of the ring parting line 273rd The transverse sealing joints 272 form two non-parallel sides and the parallel portions of the joints 271, 275 parallel sides of the trapezoidal shape. In this case, the coincidence ratio of the lengths of vertical (horizontal) normal axis 251 and horizontal normal axis 252 of the surface or trapezoidal shape is not less than 50% and preferably not less than 55%, wherein the two normal axes 251, 252 center axes orthogonal to each other with the surface shape spanning half-lengths are ( Fig. 4 ). This embodiment, as exemplified by the trapezoidal surface shape, has in connection with the joint-free body edge web 261 the particular advantage that the lid edge part 3 sits particularly low tension in the enclosure 29, wherein, for example, as shown, a fixing connection between the body 2 and the cover part 3 by only four attachment points, in the example by means of screw, realized. Such attachment points are minimized over the ring parting line 273 in number and preferably at least substantially equal distributed according to corresponding sections. For example, the attachment points are located exclusively in corner regions of opening edge surfaces, for example, as shown, in the corner regions of the trapezoidal surface. The measures ensure that the interrupted with cross-cut joints 272 sealing webs in conjunction with the joint-free body edge webs 261 in particular Contribute to the reliable and defined seal by means of the web system 4. The above measures and / or the described Aus / stiffening with additional ribs also opens up the possibility of interrupting in the height dimension H at least one sealing ridge, in the embodiment, the middle sealing ridge 412 to form at least one labyrinth passage 42 for condensed water. Incidentally, as is known per se, labyrinth passages or gaps 43 are formed in the circumferential sealing webs 411, 412, 413.

Claims (15)

Elektrischer Durchlauferhitzer (1) zur Warmwasserbereitung, umfassend einen sich in LƤngs-, Breiten- und Hƶhendimension (L, B, H) erstreckenden Grundkƶrper (2) mit einer Kƶrpervorderseite (21), einer KƶrperrĆ¼ckseite (22), einer die Kƶrperhƶhe in der Hƶhendimension (H) bestimmenden Kƶrperrandseite (23) zwischen der Kƶrpervorderseite (21) und der KƶrperrĆ¼ckseite (22) und einem innerhalb eines monolithischen Teils des Grundkƶrpers (2) ausgebildeten Hohlraum (24), wobei die KƶrperrĆ¼ckseite (22) eine RĆ¼ckwand (11) bildet und einen rĆ¼ckwƤrtigen Nassbereich (102) von einem vorderseitigen Trockenraum (101) trennt und wobei die Kƶrperrandseite (23) eine ƖffnungsrandflƤche (25) aufweist, in der der Hohlraum (24) mit Ɩffnung (50) offen ist, umfassend ein der ƖffnungsrandflƤche (25) zugehƶriges, sie abdeckendes Deckelrandteil (3) mit einer DeckelauƟenseite (31), wobei an von der ƖffnungsrandflƤche (25) freier Kƶrperrandseite (23) nach auƟen hervorstehende Kƶrperrandstege (26) und an der DeckelauƟenseite (31) nach auƟen hervorstehende Deckelrandstege (36) ausgebildet sind, und umfassend ein AuƟengehƤuse (12), in dem der Grundkƶrper (2) sitzt, wobei der Grundkƶrper (2) und das Deckelrandteil (3) Ć¼ber Trennfugen (272), die zu Kƶrperrandstegen (26) und Deckelrandstegen (36) quer gerichtet sind, aneinander grenzen und wobei die Kƶrperrandstege (26) und die Deckelrandstege (36) Dichtstege (41) eines zwischen dem Grundkƶrper (2) und dem AuƟengehƤuse (11) des Durchlauferhitzers (1) eingepassten, gegen Strahlwasser dichtenden Stegsystems (4) ausbilden, dadurch gekennzeichnet, dass das Stegsystem (4) wenigstens einen von den querenden Trennfugen (272) freien, einen Dichtsteg bildenden Kƶrperrandsteg (411, 261) umfasst, der die ƖffnungsrandflƤche (25) fugenfrei passiert.Electric instantaneous water heater (1) for hot water preparation, comprising a longitudinal body, width and height dimension (L, B, H) extending base body (2) having a body front side (21), a body back (22), the body height in the height dimension (H) determining the body edge side (23) between the body front side (21) and the body back (22) and within a monolithic part of the base body (2) formed cavity (24), wherein the body back (22) forms a rear wall (11) and separating a rear wet area (102) from a front side dry space (101), and wherein the body edge side (23) has an opening edge surface (25) in which the cavity (24) is open with opening (50) comprising one of the opening edge area (25) associated, they covering cover edge part (3) with a lid outer side (31), wherein at from the opening edge surface (25) free body edge side (23) outwardly projecting body edge webs (26) and on the lid outer side (31) outwardly projecting lid edge webs (36) are formed, and comprising an outer housing (12) in which the base body (2) sits, wherein the base body (2) and the lid edge portion (3) via parting lines (272) which are transverse to body edge webs (26) and cover edge webs (36), bordered and wherein the body edge webs (26) and the cover edge webs (36) sealing webs (41) one between the base body (2) and the outer housing (11) of the through-flow heater (1) fitted, against jet water sealing web system (4) form, characterized in that the web system (4) comprises at least one of the transverse joints (272) free, a sealing web forming body edge web (411, 261), the opening edge surface (25) passes without joints. Durchlauferhitzer nach Anspruch 1, dadurch gekennzeichnet, dass der wenigstens eine fugenfreie Kƶrperrandsteg (411, 261) im Bereich der ƖffnungsrandflƤche (25) parallel mit dieser verlƤuft.Instantaneous water heater according to claim 1, characterized in that the at least one joint-free body edge web (411, 261) in the region of the opening edge surface (25) extends parallel thereto. Durchlauferhitzer nach Anspruch 1 oder 2, dadurch gekennzeichn e t, dass der fugenfreie Kƶrperrandsteg (411, 261) umlaufend an dem Grundkƶrper (2) ausgebildet ist, und dass das AuƟengehƤuse (11) einen umlaufenden GehƤuseinnenrand (121) aufweist, wobei der umlaufende fugenfreie Kƶrperrandsteg (411, 261) und der umlaufende GehƤuseinnenrand (121) eine umlaufende Dichtpassung ausbilden.Instantaneous water heater according to claim 1 or 2, characterized gekennzeich et et, that the joint-free body edge web (411, 261) circumferentially on the base body (2) is formed, and that the outer housing (11) has a circumferential housing inner edge (121), wherein the circumferential groove-free body edge web (411, 261) and the circumferential housing inner edge (121) form a circumferential sealing fit. Durchlauferhitzer nach einem der AnsprĆ¼che 1 bis 3, dadurch gekennzeichnet, dass zwischen dem fugenfreien Kƶrperrandsteg (411, 261) und dem Deckelrandteil (3) eine parallel mit dem fugenfreien Kƶrperrandsteg (411, 261) verlaufende Paralleltrennfuge (271) ausgebildet ist.Instantaneous heater according to one of claims 1 to 3, characterized in that between the joint-free body edge web (411, 261) and the lid edge portion (3) parallel to the joint-free body edge web (411, 261) extending parallel parting line (271) is formed. Durchlauferhitzer nach einem der AnsprĆ¼che 1 bis 4, dadurch gekennzeichnet, dass der fugenfreie Kƶrperrandsteg (411, 261) wenigstens durch einen Abschnitt einer das Deckelrandteil (3) wenigstens teilweise aufnehmenden Einfassung (29) gebildet ist, die an dem Grundkƶrper (2) ausgebildet ist.Flow heater according to one of claims 1 to 4, characterized in that the joint-free body edge web (411, 261) at least by a portion of the cover edge part (3) at least partially receiving enclosure (29) is formed, which is formed on the base body (2) , Durchlauferhitzer nach einem der AnsprĆ¼che 1 bis 5, dadurch gekennzeichnet, dass die Kƶrpervorderseite (21) des Grundkƶrpers (2) einen Seitenrand (211) aufweist, der den fugenfreien Kƶrperrandsteg (411, 261) ausbildet.Instantaneous water heater according to one of claims 1 to 5, characterized in that the body front side (21) of the base body (2) has a side edge (211) which forms the joint-free body edge web (411, 261). Durchlauferhitzer nach einem der AnsprĆ¼che 1 bis 6, dadurch gekennzeichnet, dass das Deckelrandteil (3) in eine die ƖffnungsrandflƤche (25) begrenzende Einfassung (29) eingekapselt ist, die an dem Grundkƶrper (2) ausgebildet ist.Flow heater according to one of claims 1 to 6, characterized in that the lid edge part (3) in an opening edge surface (25) bounding enclosure (29) is encapsulated, which is formed on the base body (2). Durchlauferhitzer nach einem der AnsprĆ¼che 1 bis 7, dadurch gekennzeichnet, dass zwischen dem Grundkƶrper (2) und dem Deckelrandteil (3) Trennfugen (27) ausgebildet sind, die Abschnitte einer die ƖffnungsrandflƤche (25) vollstƤndig umgrenzenden Ringtrennfuge (273) sind.Flow heater according to one of claims 1 to 7, characterized in that between the base body (2) and the lid edge part (3) parting lines (27) are formed, which are sections of the opening edge surface (25) completely bounding ring parting line (273). Durchlauferhitzer nach einem der AnsprĆ¼che 1 bis 8, dadurch gekennzeichnet, dass wenigstens in einem mittleren Bereich der DeckelauƟenseite (31) ausgebildete Deckelrandstege (36) mit Kƶrperrandstegen (26) an der Kƶrperrandseite (23) fluchten.Instantaneous water heater according to one of claims 1 to 8, characterized in that at least in a central region of the lid outer side (31) formed cover edge webs (36) are aligned with body edge webs (26) on the body edge side (23). Durchlauferhitzer nach einem der AnsprĆ¼che 1 bis 9, dadurch gekennzeichnet, dass eine die Deckelrandstege (36) tragende DeckelauƟenflƤche (310) und eine AuƟenflƤche (230) der Grundkƶrperrandseite (23), die an das Deckelrandteil (3) angrenzt, stufenfrei in Ć¼bereinstimmender FlƤchenebene aneinander grenzen.Instantaneous water heater according to one of claims 1 to 9, characterized in that the lid edge webs (36) carrying the lid outer surface (310) and an outer surface (230) of the base body edge side (23) adjacent to the lid edge part (3), step-free in coincident surface plane to each other limits. Durchlauferhitzer nach einem der AnsprĆ¼che 1 bis 10, dadurch gekennzeichnet, dass der wenigstens eine fugenfreie Kƶrperrandsteg (411, 261) ein in der Hƶhendimension (H) des Grundkƶrpers (2) an der Kƶrperrandseite (23) ƤuƟerer, zur Kƶrpervorderseite (21) hin gelegener Steg ist.Flow heater according to one of claims 1 to 10, characterized in that the at least one joint-free body edge web (411, 261) in the height dimension (H) of the base body (2) on the body edge side (23) outer, the body front side (21) down Jetty is. Durchlauferhitzer nach einem der AnsprĆ¼che 1 bis 11, dadurch gekennzeichnet, dass die Kƶrperrandseite (23) des Grundkƶrpers (2) einander gegenĆ¼berliegende Breitseiten (232) umfasst, in die jeweils ein gegen die zugehƶrige ƖffnungsrandflƤche (25) gesetztes Deckelrandteil (3) eingefasst ist.Flow heater according to one of claims 1 to 11, characterized in that the body edge side (23) of the base body (2) comprises opposite broad sides (232), in each of which against the associated opening edge surface (25) set lid edge portion (3) is enclosed. Durchlauferhitzer nach Anspruch 12, dadurch gekennzeichnet, dass in dem Grundkƶrper (2) sich in seiner LƤngendimension (L) erstreckende WasserkanƤle (5) ausgebildet sind, die in beiden ƖffnungsrandflƤchen (25) offen sind und den genannten Hohlraum (24) bilden, wobei die Deckelrandteile (3) zusammen mit den ƖffnungsrandflƤchen (25) BrĆ¼ckenkanƤle (28, 38) ausbilden, durch die jeweils in den ƖffnungsrandflƤchen (25) benachbarte Kanalƶffnungen (51) fĆ¼r Wasserdurchgang gedichtet miteinander verbunden sind.Instantaneous water heater according to claim 12, characterized in that in the base body (2) in its length dimension (L) extending water channels (5) are formed, which are open in both opening edge surfaces (25) and said cavity (24), wherein the Cover edge parts (3) together with the opening edge surfaces (25) bridge channels (28, 38) form, are sealed by the respectively in the opening edge surfaces (25) adjacent channel openings (51) for water passage. Durchlauferhitzer nach einem der AnsprĆ¼che 1 bis 13, dadurch gekennzeichnet, dass die Kƶrperrandseite (23) mehrere Ć¼ber Ecken aneinander grenzende Kƶrperrandabschnitte aufweist und dass an wenigstens einem Kƶrperrandabschnitt die ƖffnungsrandflƤche (25) so angeordnet und ausgebildet ist, dass die ƖffnungsrandflƤche (25) mit zugehƶrigem Deckelrandteil (3) einen Teil des Kƶrperrandabschnittes ausbildet, der nur ca. 1/4 bis 2/3 des gesamten Kƶrperrandabschnitts einnimmt.Instantaneous water heater according to one of claims 1 to 13, characterized in that the body edge side (23) has a plurality of body edge portions adjacent to each other and that at least one body edge portion, the opening edge surface (25) is arranged and formed so that the opening edge surface (25) with associated Cover edge part (3) forms a part of the body edge portion, which occupies only about 1/4 to 2/3 of the entire body edge portion. Durchlauferhitzer nach einem der AnsprĆ¼che 1 bis 14, dadurch gekennzeichnet, dass in einem dem Deckelrandteil (3) entsprechenden Abschnitt der Kƶrperrandseite (23) in der Hƶhendimension (H) nebeneinander angeordnete Rippen ausgebildet sind, deren Zahl grĆ¶ĆŸer ist als die von entsprechend angeordneten Rippen in Abschnitten der Kƶrperrandseite (23), die an das Deckelrandteil (3) angrenzen.Flow heater according to one of claims 1 to 14, characterized in that in one of the cover edge part (3) corresponding portion of the body edge side (23) in the height dimension (H) juxtaposed ribs are formed, whose number is greater than that of correspondingly arranged ribs in Portions of the body edge side (23) adjacent to the lid edge portion (3).
EP11155231.1A 2011-02-21 2011-02-21 Electric water heating units for supplying hot water Active EP2489953B1 (en)

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CN201210164292.3A CN102679532B (en) 2011-02-21 2012-02-21 For providing the continuous heaters of the electricity of hot water

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Citations (3)

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US5334819A (en) * 1993-11-08 1994-08-02 Lin Hsiao Chih Instant heating type water heaters
DE19510345A1 (en) * 1995-03-22 1996-09-26 Neubeck Elektrogeraete Gmbh Throughflow heater eg. for heating water in kitchen
DE202004012263U1 (en) * 2004-08-05 2004-10-07 Stiebel Eltron Gmbh & Co. Kg Instantaneous water heater consists of individual modular functional parts connected via plug connections of flange and socket, for easy assembly and repair

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* Cited by examiner, ā€  Cited by third party
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JP2003185272A (en) * 2001-12-19 2003-07-03 Paloma Ind Ltd Hot water circulation heater
CN201344612Y (en) * 2008-07-22 2009-11-11 å®ę³¢å¤©ę˜Žē”µå­č‚”ä»½ęœ‰é™å…¬åø Leak-proof sealing structure for quick electric water heater

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* Cited by examiner, ā€  Cited by third party
Publication number Priority date Publication date Assignee Title
US5334819A (en) * 1993-11-08 1994-08-02 Lin Hsiao Chih Instant heating type water heaters
DE19510345A1 (en) * 1995-03-22 1996-09-26 Neubeck Elektrogeraete Gmbh Throughflow heater eg. for heating water in kitchen
DE202004012263U1 (en) * 2004-08-05 2004-10-07 Stiebel Eltron Gmbh & Co. Kg Instantaneous water heater consists of individual modular functional parts connected via plug connections of flange and socket, for easy assembly and repair

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CN102679532B (en) 2016-04-20
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