EP2481931B1 - Pompe avec dispositif de chauffage - Google Patents

Pompe avec dispositif de chauffage Download PDF

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Publication number
EP2481931B1
EP2481931B1 EP12152098.5A EP12152098A EP2481931B1 EP 2481931 B1 EP2481931 B1 EP 2481931B1 EP 12152098 A EP12152098 A EP 12152098A EP 2481931 B1 EP2481931 B1 EP 2481931B1
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EP
European Patent Office
Prior art keywords
pump
deformation
support
sealing ring
carrier
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.)
Active
Application number
EP12152098.5A
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German (de)
English (en)
Other versions
EP2481931A2 (fr
EP2481931A3 (fr
Inventor
Dipl.-Ing. Weber (TU) Wolfgang
Uwe Koegel
Dipl.-Ing. Maier (BA) Axel
B-Eng. Tobias Albert
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.)
EGO Elektro Geratebau GmbH
Original Assignee
EGO Elektro Geratebau GmbH
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Publication date
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Publication of EP2481931A2 publication Critical patent/EP2481931A2/fr
Publication of EP2481931A3 publication Critical patent/EP2481931A3/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
    • F04D29/588—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps cooling or heating the machine
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4225—Arrangements or adaption of recirculation or discharge pumps
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4285—Water-heater arrangements
    • 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 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/083—Liquid discharge or recirculation arrangements
    • D06F39/085—Arrangements or adaptations of pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/086—Sealings especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps

Definitions

  • the invention relates to a pump having a heating device, in particular for use as a water-conducting region of the pump or its Pumpenschdungroisi the pump can be used in particular for household appliances such as dishwashers.
  • a pump for a washing machine which has a heater attached to the outer wall of the pump chamber.
  • the outer wall may have multiple bends or beads at the ends and a peripheral seal of the outer wall to a rest of the pump housing.
  • a coffee machine is known with a water flow in the manner of a pot or closed round cylinder. On an outer circumference of the water flow circulating tubular heaters are attached. On an upper side of the water guide an outwardly facing bead is provided for sealing arrangement on a container wall.
  • a feed tube for water to be pumped may have a series of outward and inward turns in its end region prior to transition to the pump.
  • a round rubber is used for sealing to the outside.
  • a centrifugal pump is known with a pump housing consisting of several stacked inserts.
  • bends can be provided on tubular parts in the manner of beads, which result in conjunction with seals a good sealing effect.
  • the invention has for its object to provide an aforementioned pump, can be avoided with the problems of the prior art and in particular an advantageous construction for the heater with carrier can be achieved and a reliable seal can be created.
  • the heating device is tubular and has a tubular support, on which at least one heating element is arranged or provided.
  • a heating device can be used particularly advantageously as a water-conducting region of the pump or a pump chamber, that is also directly come into contact with the water or fluid conveyed by the pump.
  • the carrier has at least one deformation deviating from the continuous tube shape, this continuous tube shape relating to the longitudinal direction of the carrier.
  • a deformation is a bend or bead or collar-like deformation inwards or outwards or has such.
  • Such deformation is provided on at least one of the end portions of the carrier, preferably a deformation at each of the end portions.
  • these deformations can then be of a similar design. This is especially true when looking at the carrier in longitudinal section.
  • the aforementioned continuous tube shape of the carrier may be a cylindrical tube shape, so the carrier be round cylindrical.
  • the ends of the carrier are cut straight.
  • the carrier or the heater can be produced as easily as possible by automation. This therefore means that the deformations are preferably provided at the end regions of the carrier and the carrier otherwise is just round cylindrical. So it can be made relatively easily from a cylindrical metal tube.
  • the deformation is rotationally symmetrical about a longitudinal central axis of the carrier.
  • the deformation can be made easier, for example by rolling, pressing and forging.
  • this can be a certain independence from the rotational position of the carrier or the heater when installed in the pump or in the step of applying the heater can be achieved thereon.
  • a deformation is advantageously produced without severing the material or cutting into the material.
  • the wearer should therefore also have closed and continuously continuous inner and outer surfaces with the deformations. So it should not be generated holes in the carrier, which in turn mean more effort in the seal.
  • an end region of the carrier modified by a beading or deformation may have a narrow circumferential recess. It may have a width of a few mm, for example 1 mm to 4 mm.
  • a sealing ring for sealing engagement with the pump housing.
  • a sealing ring is advantageously arranged outside.
  • the heating element should be limited to a central region of the carrier.
  • the distance to the deformations may be less or greater.
  • the distance may be at least 10% to 20% or even 30% of the length of the carrier.
  • the carrier is deformed before the heating element is applied. Under certain circumstances, although the application process is somewhat more complicated. At the same time, however, the mechanically very demanding deformation be performed better and it can be avoided in any case, that the heating element is damaged.
  • a single heating element is advantageously provided. This extends substantially around the carrier and may beneficially occupy the largest area of the carrier or surface, in a central zone at a distance of about 10% to 20% or even 30% of the length of the carrier towards the end areas.
  • a heating element is too close to a seal at the end regions or a connection to the pump housing, so that there is an undesirable or even inadmissible heating.
  • seals or sealing rings can be affected or damaged by heat, which should be avoided if possible.
  • the heating in pumps with one of the DE 102007017271 A1 similar design principle are concentrated on a central region of the outer Pumpencrowandung where the heating of the pumped fluid is maximum.
  • a said sealing ring may advantageously be provided radially inwardly next to the deformation or adjacent to the second oblique region.
  • it may run on the outside of the carrier in the bead.
  • the first alternative has the advantage of a slightly larger distance to the heating element in the central region of the heater on together with lower thermal stress on the sealing ring.
  • projections or elevations may be provided in the region on the carrier on which abuts a circumferential sealing ring, advantageously in the manner of ribs.
  • These should be formed circumferentially similar to the deformation, particularly advantageous rotationally symmetric. They can be generated when making the deformation, for example by rolling.
  • These projections or ribs can then be pressed in the assembled state of the pump in the sealing ring or push in to protect against twisting or slipping of the sealing ring. As a rule, two to four such projections are considered sufficient. Under certain circumstances, such a projection can also be produced by a consciously relatively sharply defined edge of a deformation or bend against which the sealing ring bears, with a similar effect.
  • a prescribed heating device is mounted on a pump chamber wall or serves directly as a pump chamber wall.
  • the heating is provided on an outer pump chamber wall, as is generally the case from the aforementioned DE 102007017271 A1 is known.
  • the fluid to be conveyed and heated flows mainly and laterally along the longest for a good heat transfer.
  • a said heater may even consist of sufficiently temperature-resistant plastic under certain circumstances.
  • the heating element may then be provided both on the outside and on the inside of the carrier to abut directly on the outside of the pump chamber wall for optimum heat transfer.
  • the heater itself form as Pumpenschdung, so that the fluid to be conveyed flows along the inside of the heater or the carrier and, especially in the case of a carrier made of metal, ensures the best possible heat transfer.
  • the heating device abuts against or is held by a retaining projection of the pump housing.
  • a seal is advantageously provided therebetween, particularly advantageously a circumferential sealing ring of suitably suitable elastic material. It can also be provided that do not touch the heater and the pump housing or the retaining projection.
  • the retaining projection can cover the deformation. He can reach close to a range of the heater without deformation at a small distance, namely radially within it.
  • the radial distance between retaining projection and heating device is designed so that at an operating temperature of the pump, which is advantageously about 60 ° C to 80 ° C, which in this case is to be measured on the retaining projection, the radial distance between the heater and holding projection at most 1 mm. He is minimal at this operating temperature. Due to the material properties of a heater with a metallic carrier and a pump housing made of plastic, this distance is greater at lower temperatures of the pump. This can be achieved that with radially inner seal the contact pressure on the seal in the heated operation of the pump is maximum or even the sealing effect is maximum. Especially when a pump is mainly heated when conveying the fluid, this is advantageous.
  • a flow transition between the holding projection and the inside of the heating device can then be reduced by a small gap.
  • the deformation although in turn radially is formed to the inside, a sealing ring but is arranged on the outside of the heating device, via which the heating device has a sealing engagement with an outer, circumferential retaining projection of the pump housing.
  • Radially within this deformation is another circumferential inner retaining projection of the pump housing with a small radial distance to the inside of the deformation at about room temperature, ie without heating the pump.
  • This radial distance as well as the material properties of the metallic carrier of the heating device and the pump housing made of plastic are designed so that the pump housing or the inner holding projection have expanded radially at an operating temperature of the pump of about 60 ° C to 80 ° C at the holding projection, that they just lie against the inside of the deformation and thus the distance or gap has disappeared. This can not only improve the sealing effect somewhat under certain circumstances, but can bring about yet another advantageous influencing of the flow conditions.
  • the inner retaining projection is provided with an obliquely outwardly directed surface. This can point in one direction, that of the first stage of the deformation of the diameter of the undeformed central region of the carrier radially inward corresponds. Thus, these two surfaces can therefore be approximately aligned for advantageous flow conditions in the pump chamber.
  • a throat transition between the inside of the carrier in an undeformed region and the bevel of the first deformation may be generously rounded, so that the fluid flow can be well deflected from the radial direction in the axial direction to the outlet of the pump.
  • a radius can be made rather small or the throat transition can be narrow here.
  • a pump 11 according to the invention is shown in section, as they are of the construction essentially of the aforementioned DE 102007017271 A1 , to which reference is explicitly made in this respect, corresponds to a radial pump or impeller pump. It can be advantageously used in a dishwasher or a washing machine.
  • the pump 11 has in the left area a pump housing 12 with inlet 13, outlet 14 and pump chamber 16. Close to a pump chamber bottom 17, a conventional impeller 18 is arranged as a pump. It is driven by an unspecified pump motor 20. By rotation of the impeller 18 fluid is sucked to the inlet 13 in the axial direction along the dashed longitudinal center axis L of the pump 11 and ejected from the impeller 18 in the radial direction.
  • the fluid in the pump chamber 16 is circulated or runs around and finally exits from the pump 11 at the outlet 14.
  • the pump chamber 16 is delimited by a heating device 22, which therefore also simultaneously forms an aforementioned radially outer pump chamber wall.
  • the heater 22 is made of a metallic As can be seen, the heater 22 seals as a radially outer pump chamber wall via two circumferential sealing rings 23 a and 23 b the Pump chamber 16 from and is sealingly connected to the pump housing 12.
  • Fig. 2 is on average a heater 22 according to the invention accordingly Fig. 1 shown in magnification. From this, the cross-section of the carrier 24 can be seen better, which is designed to be rotationally symmetrical here, namely around the dot-dashed longitudinal central axis L accordingly Fig. 1 ,
  • the carrier 24 may have a thickness of 0.3 mm to a maximum of 2 mm, advantageously more in the range of 1 mm or slightly below.
  • the carrier 24 On its outside, the carrier 24 has an insulating layer 25, for example made of glass or ceramic-like material. On this is the flat heating element 26. Regarding such a structure and the materials for carrier 24, insulating layer 25 and heating element 26 is inter alia on the EP 229928 A2 , the DE 3625087 A1 as well as the EP 885579 A1 directed.
  • the heating element 26 may cover a large or predominant part of the area of a central region 28 of the carrier 24. This central region 28 is exactly round cylindrical and formed without deformation.
  • Deformations 29a and 29b respectively close to the middle region 28 on the left and right, in this case virtually constrictions inward or tapering of the tubular carrier 24.
  • the deformations 29a and 29b are radially inwardly and adjoining by first bends 31a and 31b second bends 32a and 32b made in the opposite direction or with opposite curvature.
  • the carrier 24 extends as in the original direction or parallel to the longitudinal central axis L, but with a reduced diameter or a kind of step inward in cross section.
  • a heating device 122 with a carrier 124 and deformation 129 together with sealing ring 123b is arranged on the pump housing 112 or on the pump chamber bottom 117.
  • the deformation 129 is formed with a first bend 131b radially inward and a second bend 132b again in the direction of the longitudinal central axis L as a diameter taper.
  • Radially within the deformation 129 is an inner retaining projection 136b as a continuation of the pump chamber bottom 117.
  • a detectable gap 139 is given. This may be slightly less than 1 mm, for example about 0.5 mm.
  • the sealing point is shown at a temperature of 70 ° C in the pump chamber, so if the pumped fluid has been heated by the heater 122 to this temperature.
  • the plastic in the pump chamber bottom 117 heats up to about 50 ° C, the support 124 to a higher temperature, in particular to 100 ° C or more. Due to the coefficients of thermal expansion determined by the materials, the plastic expands more strongly, and thus also the pump chamber bottom 117 in the radial direction. This causes, as shown by the dashed line, that although the outer diameter of the tubular heater 122 slightly widened in the region of the right deformation 129b, for example by 0.5 mm.
  • the pump chamber bottom 117 expands radially even without built-in heater 122, as shown by comparisons of the dotted lines on the example of the outer retaining projection 137b, for example, by almost 1 mm.
  • the outer side of the inner holding projection 136b bears against the inside of the deformation 129b and thus the above-described gap of approximately 0.5 mm is closed.
  • the dash-dotted lines illustrate this.
  • the oblique region between the first bend 131b and second bend 132b has approximately in the direction of the pump chamber bottom 117, here is a streamlined and low-turbulence transition created. This is good for both improved pump delivery and noise.
  • the sealing effect is improved, with a disappearance of the gap even significantly.
  • the sealing ring 123b is somewhat lengthened by the increase in diameter, it does not do much. However, radial compressive forces on it do not change significantly so that its preload is almost maintained.
  • Fig. 4 left is in modification of Fig. 3 shown how the radially inner sealing ring 223b, a gap 239 between the inner retaining projection 236b of the pump chamber bottom 217 and heater 222 and first bend 231 b radially outward at a room temperature of about 20 ° C is relatively large. It can be for example 1 mm to 2 mm. Because of the radially inner sealing ring 223b no outer retaining projection is needed.
  • a deformation 329 has a third bend 333b in addition to a first bend 331b and a second bend 332b.
  • a right-facing end edge 334b of the carrier 324 is again ring-like, but with the same diameter as the carrier 324.
  • the deformation 329 thus creates a peripheral bead in the carrier 324 to the outside.
  • the region of the bead is covered by an inner holding projection 336 of the pump housing, so that no turbulence area which unfavorably influences the flow of water is created.
  • a sealing ring 323b is provided on the far right at the end of the support 324 in the region of the right third bend 333b outwardly on an outer retaining projection 337b.
  • Fig. 6 shows yet another example of deformation similar Fig. 5 , but with radially inner sealing ring 423b.
  • the advantage here is that a transition from the pump chamber bottom 417 with inner retaining projection 436b may be formed in the oblique region between the first bend 431 b and second bend 432b in almost the same direction, which is particularly streamlined and low turbulence.
  • the distance to the heating element is thermally stressed as little as possible, since it rests against the good heat-conductive metal of the carrier 424.
  • the distance to the heating element is further increased by such a deformation with a triple bend, above all because the oblique area between the first bend 431 b and the second bend 432 b is additionally affected by cold fluid and therefore the support 424 is particularly strong in this area cools.
  • the distance is also slightly larger compared to a deformation corresponding to 3 and 4 ,
  • the bead formed by the deformation 429 is not symmetrical.
  • the bending angle at the first bend 431b is greater with respect to the perpendicular to the longitudinal central axis L than at the third bend 433b.
  • the advantage of this is that the best possible streamlined adaptation to the pump chamber bottom 417 and the inner holding projection 436b can take place in the left oblique region.
  • a deformation that is easier to produce can be provided, or a seal-oriented design can be achieved by an almost right angle, in which the sealing ring 423b rests.
  • the end edge 434b of the carrier 424 is provided with the same diameter as a central region of the carrier 424.
  • a gap 439 between the pump chamber bottom 417 or inner retaining projection 436b and support 424 and second bend 432b can according to the explanations to the FIGS. 3 and 4 at operating temperature of the pump of about 70 ° C either still be present or disappear. For this purpose has been sufficiently carried out before.
  • Fig. 7 is a variation of Fig. 6 shown.
  • this is also a kind of deformation 529 provided in the manner of an inwardly directed bead.
  • the left bevel region between first bend 531b and second bend 532b is much shorter than the right bevel region between second bend 532b and third bend 533b.
  • the diameter of the end edge 534b is greater than in the middle region of the carrier 524.
  • the said left oblique region is much shorter than at Fig. 6 whereby it can be achieved that the fluid flowing along from the pump chamber bottom 517 reaches the heated support 524 or the heating device 522 more quickly for heating.
  • the sealing ring 523b is closer to a heating element of the heater 522 and thus thermally slightly more stressed.
  • a deformation 629 of the carrier 624 of the heater 622 is formed similarly as in Fig. 3 , only with an elongated rounding as the second Bend 632b after the first bend 631 b.
  • This rounding corresponds approximately to an outer concerns on the sealing ring 623b.
  • three rib-like rotationally symmetrical projections 640 are provided on the second bend 632b. These can, as indicated, push into the sealing ring 623b. On the one hand, they act as an additional sealing surface and thus improve the sealing effect.
  • the rib-like projections 640 will press into the sealing ring 623b so far that it also abuts the areas of the second bend 632b therebetween. This additionally improves the sealing effect.
  • Fig. 8 It can be seen that even a relatively generously rounded bend at the deformation 629 through the second bend 632b is both reasonably streamlined and gives a gap which is not too large.
  • the rib-like protrusions 640 may be incorporated in forming the deformation 629, such as by rolling or forging.
  • a third bend 733b is provided radially outward and thus with the same curvature as the second bend 732b.
  • two rib-like projections 740 are formed on the inside of the carrier 724 as a kind of edges, ie they are not additionally formed as in the illustration in FIG Fig. 8 but emerged by simply turning. They, too, can press something into the sealing ring 723b and both form an anti-twist protection for the sealing ring 723b and also act as additional sealing surfaces.
  • a simplified deformation 829 of the carrier 824 is shown with a single bend 831 b.
  • the result is a kind of cranked carrier 824 with a widened offset, so that the end edge 834b does not point in the direction parallel to the longitudinal central axis L, but obliquely outward.
  • Such deformation 829 can be achieved above all with less effort, since only a single bend is needed.
  • the heater 822 is held in both the radial and in the axial direction of the sealing ring 823 b.
  • FIG. 11 a further variant of a deformation 929 in the manner of a crank, but with in contrast to Fig. 10 radially outward sealing ring 923b and obliquely inwardly facing end edge 934b.
  • the essential difference here is that, with this type of deformation, it is possible to very well absorb and continue the course of the pump chamber bottom 917 with the oblique region to the right of the first bend 931 b, which is particularly streamlined. This can also be further improved by precisely tuning the gap 939 to the thermal expansion behavior of plastic and metal, as explained above.
  • the left portion of the pump 11 may apply the same for the sealing point, as described above, in particular pump housing 12 and heater 22 may be formed symmetrically or accordingly. Alternatively, however, as in Fig. 1 As can be seen, training is easier because the aspects of flow control are less significant, since fluid flow does not have to be redirected near the outlet 14.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Textile Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Resistance Heating (AREA)

Claims (8)

  1. Pompe (11), en particulier pour appareils ménagers tels que des lave-vaisselle, comprenant un boîtier de pompe (12) et une chambre de pompe (16) dans celui-ci, dans laquelle tourne une roue de pompe (18) pour refouler du fluide ou de l'eau, comprenant un dispositif de chauffage (22, 122) pour la pompe (11) au niveau d'une paroi de chambre de pompe ou en tant que paroi de chambre de pompe, le dispositif de chauffage (22, 122) étant réalisé sous forme tubulaire et présentant un support de forme tubulaire (24, 124) et au moins un élément chauffant (26) sur le support, le support présentant au moins une déformation (29a, 29b, 129) s'écartant de la forme tubulaire continue, au moins une déformation étant prévue au niveau des deux régions d'extrémité du support, caractérisée en ce qu'une déformation est une courbure (31, 32, 131, 132) vers l'intérieur, une déformation (29a, 29b, 129) étant réalisée avec des courbures cintrées plusieurs fois de manière alternée (31, 32, 131, 132, 231), une déformation étant réalisée radialement vers l'intérieur dans la région d'extrémité du support à la manière d'un gradin ou sous forme de gradin, deux coudes arrondis étant à cet effet prévus avec un cintrage ou un coudage alterné avec une courbure différente, de telle sorte que l'arête d'extrémité (34, 134) du support présente un plus petit diamètre que la région centrale principale du support, la déformation (29a, 29b, 129) étant réalisée radialement vers l'intérieur au niveau des deux régions d'extrémité du support (24, 124) et une bague d'étanchéité périphérique (23, 123) étant disposée au niveau du côté extérieur de la déformation pour l'application hermétique contre une saillie de retenue extérieure périphérique (137) du boîtier de pompe (12), une saillie de retenue intérieure périphérique supplémentaire (136) du boîtier de pompe (12) étant prévue radialement à l'intérieur de la déformation avec une petite distance radiale au côté intérieur de la déformation à la température de fonctionnement de la pompe (11) qui est approximativement la température ambiante, cette distance radiale étant réalisée de telle sorte qu'elle disparaisse à la température de fonctionnement de la pompe ou du boîtier de pompe ou de la saillie de retenue, d'environ 60° C à 80° C, par dilatation du boîtier de pompe et que la saillie de retenue intérieure s'applique contre le côté intérieur de la déformation.
  2. Pompe selon la revendication 1, caractérisée en ce que pour l'étanchéité, le dispositif de chauffage (22, 122) ou le support (24, 124) s'applique hermétiquement contre une saillie de retenue (136) radialement interne ou externe du boîtier de pompe (12), avec chevauchement dans la direction longitudinale du support, en particulier avec interposition d'une bague d'étanchéité périphérique (23, 123).
  3. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que la forme tubulaire continue du support (24, 124) est une forme tubulaire cylindrique, de préférence avec des extrémités coupées droites (34, 134).
  4. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que la déformation (29a, 29b, 129) est réalisée de manière identique au niveau des deux régions d'extrémité.
  5. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce qu'une déformation (29a, 29b, 129) est réalisée avec une symétrie de révolution autour d'un axe longitudinal médian du support (24, 124).
  6. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que l'au moins un élément chauffant (26) présente une distance aux déformations (29, 129) et notamment dans le cas de déformations au niveau des deux régions d'extrémité, l'élément chauffant est limité à une région centrale (28) du support (24, 124) avec une distance de 10 % à 30 % de la longueur du support aux régions d'extrémité.
  7. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce qu'un élément chauffant unique (26) est prévu, lequel s'étend essentiellement autour du support (24, 124) et occupe ou recouvre de préférence la plus grande région du support (24, 124) dans une zone centrale (28) à une distance d'environ 10 % à 30 % de la longueur du support aux régions d'extrémité.
  8. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que dans la région pour l'application d'une bague d'étanchéité périphérique (23, 123, 623b) contre le support (624) sont prévues des saillies en forme de nervures (640), en particulier également périphériques, destinées à presser dans la bague d'étanchéité (23, 123, 623b) en tant que protection contre la rotation ou le glissement de la bague d'étanchéité.
EP12152098.5A 2011-02-01 2012-01-23 Pompe avec dispositif de chauffage Active EP2481931B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011003467A DE102011003467A1 (de) 2011-02-01 2011-02-01 Heizeinrichtung für eine Pumpe und Pumpe

Publications (3)

Publication Number Publication Date
EP2481931A2 EP2481931A2 (fr) 2012-08-01
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DE102013200280A1 (de) * 2013-01-10 2014-07-10 E.G.O. Elektro-Gerätebau GmbH Impellerpumpe
DE102013211556A1 (de) 2013-06-19 2014-12-24 E.G.O. Elektro-Gerätebau GmbH Heizeinrichtung für eine Pumpe und Pumpe
DE102018210207B4 (de) 2018-06-22 2022-03-10 E.G.O. Elektro-Gerätebau GmbH Wasserführendes Haushaltsgerät mit einer Impellerpumpe
CN112294219B (zh) * 2019-07-29 2022-07-12 佛山市威灵洗涤电机制造有限公司 加热泵及具有其的家用电器
DE102020213968B3 (de) 2020-11-06 2022-02-17 E.G.O. Elektro-Gerätebau GmbH Waschmaschine und Verfahren zum Betrieb einer solchen Waschmaschine
DE102021207441B3 (de) 2021-07-13 2022-06-02 E.G.O. Elektro-Gerätebau GmbH Verfahren zum Betrieb einer Waschmaschine und Waschmaschine

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DE3545442A1 (de) 1985-12-20 1987-06-25 Bosch Siemens Hausgeraete Heizelement fuer thermische hausgeraete, insbesondere fuer kochstellen
DE3625087A1 (de) 1986-07-24 1988-01-28 Ego Elektro Blanc & Fischer Elektro-bauelement
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DE20018182U1 (de) * 2000-10-25 2001-12-13 Fritz Eichenauer GmbH & Co. KG, 76870 Kandel Pumpe mit einem beheizbaren Gehäuse
DE50109139D1 (de) * 2000-10-25 2006-05-04 Eichenauer Heizelemente Gmbh Pumpe mit einem beheizbaren Gehäuse
DE20218792U1 (de) * 2001-12-05 2003-04-30 Strix Ltd., Ronaldsway, Isle of Man Heizgeräte mit mehreren Leistungsstufen
JP4633396B2 (ja) * 2004-07-16 2011-02-16 株式会社荏原製作所 遠心式ポンプ
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DE102011003467A1 (de) 2012-08-02
PL2481931T3 (pl) 2017-09-29
EP2481931A2 (fr) 2012-08-01
EP2481931A3 (fr) 2013-06-19

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