EP1662843A1 - Elément de serrage vulcanisé - Google Patents

Elément de serrage vulcanisé Download PDF

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Publication number
EP1662843A1
EP1662843A1 EP05026145A EP05026145A EP1662843A1 EP 1662843 A1 EP1662843 A1 EP 1662843A1 EP 05026145 A EP05026145 A EP 05026145A EP 05026145 A EP05026145 A EP 05026145A EP 1662843 A1 EP1662843 A1 EP 1662843A1
Authority
EP
European Patent Office
Prior art keywords
clamping piece
fixing
sealing element
container
flange plate
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.)
Withdrawn
Application number
EP05026145A
Other languages
German (de)
English (en)
Inventor
Rene Hendler
Gerold Zinner
Andreas Pleschinger
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.)
Bleckmann GmbH and Co KG
Original Assignee
Bleckmann GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bleckmann GmbH and Co KG filed Critical Bleckmann GmbH and Co KG
Publication of EP1662843A1 publication Critical patent/EP1662843A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/78—Heating arrangements specially adapted for immersion heating
    • H05B3/82—Fixedly-mounted immersion heaters
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/04—Heating arrangements
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/04—Waterproof or air-tight seals for heaters
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/021—Heaters specially adapted for heating liquids

Definitions

  • the present invention relates to a device for mounting at least one heating element, in particular a tubular heater, in an opening of a container receiving a fluid to be heated, and the like, according to the preamble of claim 1.
  • Heating inserts are used to heat a fluid or medium contained in a container and the like, as is the case, for example, with water heaters, washing machines and other household electrical appliances.
  • a desire to provide inexpensive solutions for mounting the heater insert which allow mounting of the heater from the outside in the container wall opening.
  • the container wall opening is formed in the vast majority of cases slot-shaped.
  • a device for mounting a heating insert of the type mentioned which is shown by way of example in Fig. 1.
  • the heating element is a tubular heater R ', which is shown with its two unheated ends R1', R2 '.
  • This known device 10 ' essentially comprises the following components: one of the shape of the opening O 'of the wall W' of the container B 'adapted flange plate 20', in the direction of the container interior I adjoining elastic sealing element 30 ', which also adapted to the shape of the container wall opening O' is, a the outer dimensions of the sealing element 30 'adapted clamping piece 40' and a fixing unit 60 'for fixing the device 10' to or in the container wall opening ⁇ '.
  • a threaded bolt 62' of the fixing unit 60 ' is fixed, which passes through the sealing element 40' and the flange plate 20 'in the direction of the container outside A and on the in the assembled state of the device 10', ie in the container wall opening O. 'inserted heater insert R', a nut 64 'for fixing the mounting device 10' can be screwed.
  • this nut 64 ' is tightened, whereby the clamping piece 40' is pressed against the sealing element 30 '.
  • the sealing element 30 ' is pressed against the flange plate 20' and thus compressed. Characterized the sealing element 30 'swells to the side and seals against a correspondingly shaped edge of the container B', so that the heating element R 'is held close to the container B'.
  • the clamping piece 40 ' is mounted inside the container B' when the device 10 'is mounted or when the heating element R' is mounted, this element is exposed to the fluid to be heated in the container B '. If this is a corrosive medium, then the clamping piece 40 'must be made of a correspondingly high quality and therefore expensive material. In addition, when assembling the device 10 ', a total of five components are to be connected or attached to one another.
  • the sealing element covers at least all those portions of the clamping piece that are exposed in operation to the fluid to be heated.
  • the clamping piece components that either have their own corrosion protection or in which it does not depend on such corrosion protection, can be dispensed with enclosing or covering by the sealing element at these points of the clamping piece.
  • the clamping piece can thus be made of a material that does not need to take into account the properties of the fluid to be heated.
  • the susceptibility to corrosion of the material for the tensioning piece no longer plays a role, since the tensioning piece is protected against corrosion by being received in the sealing element or by enclosing by means of the sealing element.
  • the number of components to be connected together in the manufacture of the heater mounting apparatus can be reduced because at least the clamping piece and the sealing member form a preassembled unit.
  • the sealing element is machined so that a cavity is formed in the sealing element and the clamping piece inserted into this cavity of the sealing element and there by appropriate holding means, such as Clamping elements, adhesives and the like. Is fixed.
  • the sealing element has a bottom, against which the clamping piece rests and which is in operation in the interior of the container.
  • a particularly simple one Insertion of the clamping piece in the sealing element can be achieved in that the clamping piece is at least partially vulcanized into the sealing element.
  • the fixing unit may comprise a first fixing element and a second fixing element, which are braced against each other for preferably reversible fixing of the device to a container or the like.
  • One of the two fixing elements can be fixedly connected to the clamping piece and the fixing element connected to the clamping piece at least partially enclosed by the sealing element. This makes it possible to connect the clamping piece and the fixing element connected to it in a first manufacturing step with each other and then insert into the sealing element or vulcanized into the sealing element.
  • a material can also be selected independently of the fluid to be heated for the fixing element connected to the clamping piece, so that, for example, corrosion resistance plays no role, since the fixing element is again protected from corrosion by the sealing element.
  • an assembly is formed, which then only has to be provided with the flange plate and the second fixing element. This considerably simplifies the final assembly for the device.
  • the fixing unit i. for the first and the second fixing element
  • different configurations can be selected.
  • the fixing unit is formed by a threaded bolt as the first fixing element and by a cooperating with the threaded bolt lock nut as a second fixing, wherein the threaded bolt with the clamping piece fixed, in particular rotationally fixed and axially fixed.
  • the fixed connection between the clamping piece and the fixing element connected to it can be achieved in different ways.
  • the clamping piece with a bore into which the fixing element to be connected with it is inserted and fixed by material deformation on the clamping piece.
  • As another possibility to connect between Fixing and clamping piece can be a cohesive connection, such as by welding and a non-positive connection, such as provided by terminals.
  • the clamping piece and the fixedly connected to it fixing element are integrally formed. In such a case, the unit of clamping piece and fixing element can be produced as a casting. If, on the other hand, plastic is selected as the material for the fixing element and the clamping piece, then these can be produced by an injection molding process.
  • the opening in the container wall is used not only to guide the heating insert through the container wall, but also to provide there one or more monitoring and / or measuring elements. These serve to control the temperature of the medium to be heated and / or to ensure that a malfunction of the heating insert, which can lead to the destruction of the device, is avoided.
  • temperature sensors or the like Used to monitor the temperature of the fluid and thus the heating element and / or to measure.
  • the fixing element which is firmly connected to the clamping element and at least partially enclosed by the sealing element, has in its interior a cavity closed at its end facing away from the flange plate for receiving at least one measuring element. and / or monitoring element.
  • the closed end of the fixing element is exposed on the side of the sealing element facing away from the flange plate.
  • the measuring and / or monitoring element may be arranged in a separate housing, which also at least partially from the sealing element is enclosed, wherein a part of the housing from the sealing element can protrude into the container interior.
  • the housing must be made of a corrosion-resistant material. But it is also possible that the measuring and / or monitoring element is inserted directly into the sealing element, at least vulcanized.
  • a first embodiment of a device 10 according to the invention for mounting a heating element R in the opening O of a container B or the like is reproduced, which receives a not further shown, to be heated fluid or medium.
  • components of this first exemplary embodiment which functionally and / or geometrically coincide with or are at least similar to the components of the known device 10 'according to FIG. 1, with the same reference numerals as in FIG. 1, but without "'". characterized.
  • the container B is indicated in Fig. 2 only by a portion of a wall W in the region of the opening O. Since the wall thickness of the container B is low, the opening O in the wall W of the container B is defined and reinforced by turning its edge into the container interior I. In addition, this creates a sufficiently large sealing surface.
  • the Umbörtelung takes place so that the free edge of the opening O forms an angle of 90 ° with the rest of the container wall W.
  • the opening O itself has the shape of a slot or oval with parallel side edges.
  • the heating element which may have any structure and any shape is in the present case by a U-shaped tubular heater R formed, of which only the two unheated connection ends R1, R2 are shown in Fig. 2.
  • the connection ends R1, R2 of the tubular heater R which have an at least approximately circular cross-section, project from the container B in the direction of the container outside A and serve to connect the tubular heater R with an electrical energy source, also not shown.
  • the device 10 has as main components a flange plate 20, a sealing or sealing element 30, a clamping piece 40 and a fixing unit 60. These individual components will be described in more detail below in the order named.
  • the flange plate 20 which may be made of a low-alloyed and therefore cheap steel, has a shape congruent with the geometric shape of the opening O, with the difference that the covered area of the flange plate 20 is larger than that of the opening O of the container B. Flange plate 20 is bent at its edge in the direction of the inside I of the container B. In the mounted state of the device 10 so that the flange plate 20 engages the opening O in the container wall W completely.
  • the flange plate 20 is provided with two symmetrical to the axis of symmetry S of the flange plate 20, possessing a circular cross-section openings 22 for the passage of the terminal ends R1, R2 of the tubular heater R provided.
  • the dimensions of the apertures 22 are chosen so that the terminal ends R1, R2 of the tubular heater R can be inserted into these readily.
  • the edges of the openings 22 are beaded in the direction of the container outer side A.
  • the flange plate 20 has a further, likewise having a circular cross-section opening 24 which extends concentrically to the axis of symmetry S of the flange plate 20.
  • This opening 24 serves for the passage of a threaded bolt 62 of the fixing unit 60 which will be explained in more detail below.
  • the sealing element 30 which is made of an elastic, vulcanizable material, preferably just such a plastic, such as an elastomer, a thermoplastic elastomer and silicone (in water treatment).
  • a further material for the sealing element and an elastic foamable plastic can be provided, which is foamed around the clamping piece 40.
  • the sealing member 30 has a shape and outer dimensions which correspond to those of the opening O of the container wall W, so that during assembly of the device 10 of the invention, together with the tubular heater R held by it, is inserted into the opening O of the container B from the container outer side A. can be.
  • the sealing member 30 has, as the flange plate 20, also three openings 32, 34 for the terminal ends R1, R2 of the tubular heater R and for the threaded bolt 62 of the fixing unit 60.
  • the arrangement of these three openings 32, 34 and their shape or dimensions correspond to the It should be noted that the axis of symmetry of the sealing element 30 coincides with that of the flange plate 20 and is therefore also marked with the letter "S".
  • the clamping piece 40 has a shape and outer dimensions which correspond to those of the opening O of the container wall W, so that when mounting the device 10 according to the invention, the clamping piece 40 and the sealing member 30 together with the held by the inventive device 10 tubular heater R in the opening O. of the container B can be inserted.
  • the clamping piece 40 also has three openings 42, 44 for the terminal ends R1, R2 of the tubular heater R and for the threaded bolt 62 of the fixing unit 60th Die Arrangement of these three openings 42, 44 corresponds to the three openings 22, 24 and 32, 34 of the flange plate 20 and the sealing member 30. In contrast to this, however, are the openings 42, 44 in cross-section or in plan view C-shaped, wherein the opening of the letter "C" points outward. As a result, space is created for the sealing element 30, so that the finished device according to the invention has the same external dimensions as the known devices. It should also be noted here that the axis of symmetry of the clamping piece 40 coincides with that of the flange plate 20 and that of the sealing element 30 and is therefore also marked with the letter "S".
  • the edge 46 of the clamping piece 40 is flanged at its in the container interior I facing side in the direction of the container interior I, thereby increasing the rigidity of the clamping piece 40.
  • the edge 46 has the shape of two ramps converging toward one another in the direction of the axis of symmetry S, in order to increase the dimensional stability of the clamping piece, in particular in the direction of the symmetry axis S or to the middle of the clamping piece 40.
  • the edge 46 of the clamping piece 40 is provided on both longitudinal sides with a U-shaped Ausklingung 48 for better fixing the threaded bolt 62 during assembly of the same on the clamping piece 40.
  • the fixing unit 60 is provided for fixing the device 10 according to the invention to the container B.
  • This is formed by the already mentioned the openings 22, 32, 42 of the flange plate 20, the sealing member 30 and the clamping piece 40 passing through threaded bolt 62 and a to be applied from the outside A of the container B to this lock nut 64.
  • the lock nut 64 may be provided with a self-tapping thread, so that the threaded bolt 62 is initially without thread.
  • a spring nut can also be provided here. As is apparent from Fig.
  • the axial length of the thread of the threaded bolt 62 is dimensioned so that it extends from the free end of the outside A of the container B in the unmounted state of the device 10 to the interior of the sealing member 30 extends.
  • the threaded bolt 62 can be replaced by a standard screw which is inserted into a through hole of the clamping piece 40 from the inside and fixed around its screw head.
  • the threaded bolt 62 is fixed to the clamping piece 40, i. in particular rotationally fixed and axially fixed.
  • the connection between the clamping piece 40 and threaded bolt 62 can, as shown in Fig. 4, carried out by inserting the threaded bolt 62 into the central opening 42 of the clamping piece 40, wherein subsequently the edge region of the opening 42 is plastically deformed, so that the threaded bolt 62nd is fixed.
  • the clamping piece 40 and the threaded bolt 62 are made in one piece, which, depending on the choice of material, this can be done by casting or injection molding.
  • a glass fiber reinforced thermoplastic can be used.
  • the threaded bolt 62 with the clamping piece 40 cohesively, i. is firmly connected for example by soldering.
  • the clamping piece 40 and the threaded bolt 62 firmly connected to it is vulcanized into the sealing element 30.
  • the circumferential contours of the clamping piece 40 are therefore shown in phantom in FIGS. 2 and 3.
  • the clamping piece 40 is completely enclosed by the sealing element 30 and only the threaded bolt 62 protrudes from the sealing element 62 on the side of the sealing element 62 facing towards the container outer side.
  • the clamping piece 40 and the threaded bolt 62 is completely enclosed at its in the container interior I facing sides or surfaces of the sealing element 30.
  • a material can be selected for the material of the clamping piece 40 and the threaded bolt 62, which in particular must have no corrosion resistance and thus is inexpensive.
  • the clamping piece 40, the threaded bolt 62nd and the sealing member 30 are combined before final assembly of the device 10 according to the invention to form a self-contained, preassembled module.
  • Heating inserts are frequently monitored and controlled by means of one or more monitoring and / or measuring elements 70.
  • the monitoring and / or control takes place here as a function of the temperature of the fluid to be heated or medium.
  • the attachment of the monitoring and / or measuring elements 70 on the container B is usually carried out via the device 10 for mounting the heating element, since then no separate opening for the element or elements in the container B must be provided.
  • FIGS. 6 to 8 there are several possibilities to install such a monitoring and / or measuring element 70, which will be explained below in connection with FIGS. 6 to 8. In order to avoid repetition, only the differences from the first exemplary embodiment explained in connection with FIGS. 2 to 5 are discussed in these exemplary embodiments. Likewise, identical reference numerals are used for functionally and / or geometrically identical or similar components.
  • FIG. 6 differs from that shown in FIG. 2 in that instead of the threaded bolt 62 of the fixing unit 60, a screw 66 is provided. Furthermore, the lock nut 64 is exchanged for a female threaded portion 68 in the through hole 44 of the clamping piece 40. Instead of the female threaded portion 68, a standard nut can be firmly attached to the clamping piece 40.
  • the screw 66 has a blind hole 66a, the opening for the blind hole 66a facing the container outside A when the device 10 is mounted.
  • the closed end 66b of the screw 66 is disposed in the sealing member 30 so as to be flush with, or project slightly beyond, the outside, ie, the side of the sealing member 30 facing inside the container I.
  • the screw 66 comes into thermal conduction contact with the fluid to be heated. If the fluid is corrosive, it must be in one Case the screw 66 are made of a corrosion resistant material. Inside the blind hole 66a, a monitoring and / or measuring element 70 is arranged. In this case, it is an NTC and / or PTC pill 70.
  • the screw 66 is merely connected by a threaded engagement with the clamping piece 40. Therefore, the screw 66 is not vulcanized with the clamping piece 40 in the sealing element 30, for example, but only screwed in the assembly of the device 10 in the container opening 0 in the passage opening of the clamping piece 40.
  • the monitoring and / or measuring element 70 is arranged in the form of NTC / PTC pill next to the threaded bolt 62 asymmetrically, wherein it not shown flange plate 20, the sealing member 30 and the Clamp 40 interspersed.
  • the monitoring and / or measuring element 70 does not protrude from the sealing element 30 into the interior I of the container B.
  • the wall section between the end of the opening provided for receiving the monitoring and / or measuring element 70 and the outside of the vulcanized clamping piece 40 is selected so thin that despite the fact that the material of the sealing element 30 is not a good heat conductor, a measuring and / or monitoring process can take place.
  • a housing 72 is provided in the same place as the measuring and monitoring element 70 shown in FIG. 7, which penetrates both the not further illustrated flange plate 20, the sealing element 30 and the clamping piece 40 and in the direction of the interior I of the container B projects beyond the sealing element 30. If the fluid to be heated is corrosive, the housing 72 is made of a corrosion resistant material. Inside the housing 72, an NTC or PTC measuring device can then be used.
  • the device 10 according to the invention is inserted into the opening O of the container wall W until the flange plate 20 rests against the outside of the container wall W.
  • the lock nut 64 By subsequently turning the lock nut 64, the clamping piece 40 can be moved in the direction of the flange plate 20 and thus clamp the sealing element 30 between them.
  • the flange plate 20 is tensioned against the outside of the container wall W.
  • the sealing member 40 is further compressed by the clamping piece 40 in the longitudinal direction of the threaded bolt 62, whereby it escapes to the outside in the circumferential direction.
  • the sealing element 30 is clamped to the umgebörtelten edge of the container wall W.
  • the tubular heater R is not only determined by the frictional forces occurring between the sealing element 30 and the outer jacket of the tubular heater R but also by the elastic forces due to the tensioning of the sealing element 30. The procedure in the other embodiments is similar.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Resistance Heating (AREA)
EP05026145A 2004-11-30 2005-11-30 Elément de serrage vulcanisé Withdrawn EP1662843A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004057812A DE102004057812A1 (de) 2004-11-30 2004-11-30 Einvulkanisiertes Spannstück

Publications (1)

Publication Number Publication Date
EP1662843A1 true EP1662843A1 (fr) 2006-05-31

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ID=35912900

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05026145A Withdrawn EP1662843A1 (fr) 2004-11-30 2005-11-30 Elément de serrage vulcanisé

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EP (1) EP1662843A1 (fr)
DE (1) DE102004057812A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103216941A (zh) * 2013-04-12 2013-07-24 蒋浩 电热水器的发热管连接结构

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2552625A1 (de) * 1975-11-24 1977-06-02 Elpag Ag Chur Vorrichtung zur verhinderung einer ueberhitzung von elektrisch beheizten geraeten
GB2022380A (en) * 1978-05-11 1979-12-12 Irca Spa Immersion heater mounting
EP0275635A1 (fr) * 1986-12-15 1988-07-27 Redring Electric Limited Dispositifs de chauffage par immersion
EP0551914A2 (fr) * 1992-01-15 1993-07-21 Elpag Ag Chur Dispositif pour mettre en place un dispositif de chauffage dans une ouverture d'une paroi d'un réservoir
EP1111962A2 (fr) * 1999-12-15 2001-06-27 Bleckmann GmbH Dispositif de chauffage possédant une enveloppe tubulaire divisée

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1891878U (de) * 1964-03-07 1964-04-30 Stiebel Werke G M B H & Co Dr Elektrisch beheizter heizkoerper.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2552625A1 (de) * 1975-11-24 1977-06-02 Elpag Ag Chur Vorrichtung zur verhinderung einer ueberhitzung von elektrisch beheizten geraeten
GB2022380A (en) * 1978-05-11 1979-12-12 Irca Spa Immersion heater mounting
EP0275635A1 (fr) * 1986-12-15 1988-07-27 Redring Electric Limited Dispositifs de chauffage par immersion
EP0551914A2 (fr) * 1992-01-15 1993-07-21 Elpag Ag Chur Dispositif pour mettre en place un dispositif de chauffage dans une ouverture d'une paroi d'un réservoir
EP1111962A2 (fr) * 1999-12-15 2001-06-27 Bleckmann GmbH Dispositif de chauffage possédant une enveloppe tubulaire divisée

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103216941A (zh) * 2013-04-12 2013-07-24 蒋浩 电热水器的发热管连接结构
CN103216941B (zh) * 2013-04-12 2015-12-23 蒋浩 电热水器的发热管连接结构

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