EP2384684A1 - Pump with heating device - Google Patents
Pump with heating device Download PDFInfo
- Publication number
- EP2384684A1 EP2384684A1 EP20110162002 EP11162002A EP2384684A1 EP 2384684 A1 EP2384684 A1 EP 2384684A1 EP 20110162002 EP20110162002 EP 20110162002 EP 11162002 A EP11162002 A EP 11162002A EP 2384684 A1 EP2384684 A1 EP 2384684A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- impeller
- housing
- housing cover
- rinsing liquid
- pump
- 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
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 37
- 230000001154 acute effect Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 claims description 2
- 239000000806 elastomer Substances 0.000 claims description 2
- 238000005406 washing Methods 0.000 abstract description 8
- 238000010792 warming Methods 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 238000011010 flushing procedure Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 206010063493 Premature ageing Diseases 0.000 description 1
- 208000032038 Premature aging Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- 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
- F04D29/02—Selection of particular materials
- F04D29/026—Selection of particular materials especially adapted for liquid 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
- A47L15/4214—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
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- 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
- F04D29/4293—Details of fluid inlet or outlet
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- 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
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- 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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/605—Mounting; Assembling; Disassembling specially 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
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/40—Organic materials
- F05D2300/43—Synthetic polymers, e.g. plastics; Rubber
Definitions
- the present invention relates to a pump, in particular for dishwashers, comprising a housing comprising a housing bottom, a housing cover and a heater arranged therebetween for heating a rinsing liquid, which forms an annular side wall of the housing, with an arranged in the housing impeller, with respect to the Rotary axis of the impeller in the housing cover axially arranged suction nozzle and with a discharge nozzle.
- Such a pump is known for dishwashers.
- a disadvantage of this pump is the vertical arrangement of the pressure nozzle relative to the axially arranged suction nozzle. It protrudes beyond the cylindrical basic shape of the pump, resulting in a larger expansion of the pump in the radial direction. The pump requires more installation space and reduces the useful volume of the dishwasher.
- Another disadvantage of this pump is the low heating surface of the annular heater, which is also broken by the discharge nozzle. In order to heat the rinsing liquid in a short time, a high heating power must be provided with correspondingly high temperatures of the heater. This can lead to problems such as premature aging, in particular at the connection points of the heating device to the adjacent plastic parts, on which also sealing elements can be present. The result is porosity of the sealing material or the adjacent plastic parts and thus leaks in the devices.
- the invention has for its object to provide a simple and inexpensive pump of the type mentioned, which has smaller external dimensions, in particular in the radial direction while avoiding the aforementioned disadvantages.
- this object is achieved in a pump of the type mentioned above in that the discharge nozzle is arranged in the housing cover.
- the arrangement of the pressure port in the cover allows a reduction in the outer dimensions of the pump in the radial direction relative to the longitudinal axis thereof.
- the installation space in particular reduces the installation height required for the pump with it. With a horizontal installation of the pump below the washing container with the longitudinal axis of the pump parallel to the bottom of the washing, valuable installation height can be saved. As a result, the useful volume of the washing container can be increased.
- a guide device for further flow diversion is arranged between the impeller and the discharge nozzle.
- a longitudinal axis of the suction nozzle is arranged at an acute angle to the longitudinal axis of the pressure nozzle
- the suction can be connected via very short or even without connecting elements directly with a drain at the bottom of the washing and the pressure nozzle with a supply line to the spray system.
- additional parts such as hoses and their attachment means.
- suction nozzle and discharge nozzle in the lid allows a simple structure of the heater, namely with a tube with a closed circular cross-section. Elaborate production engineering forming or processing steps for an opening in the heater can thus be omitted. It is thus largely produced using standard parts.
- the rinsing liquid can be heated in a breakthrough-free tube more uniform than in a ring with openings, because a large-scale undisturbed flow of water along the entire tube surface area sets.
- Such a tube is also easily replaceable.
- a tubular side wall also a structurally simple construction of the housing of the pump is also possible, wherein the housing cover and the housing bottom made of plastic and the tubular side wall made of metal can be made separately.
- the use of plastic allows not only a cost-effective production of the complex geometries of the housing cover and the housing bottom but also a reduction of the total weight of the pump.
- Plastic is also a poor conductor of heat, so that the transport of the heated rinsing fluid in the pump can be done almost energy loss.
- the tube of the heater is advantageously made of metal manufactured because it transmits a maximum of heat energy to the rinsing liquid due to the good heat conduction properties.
- the production of the housing cover can also continue to be produced, for example, by injection molding without significant additional expense for the discharge nozzle.
- the certain existing complexity of the shape of the lid due to the suction nozzle is not significantly increased by the additional arrangement of the pressure nozzle.
- the heat energy required for heating the rinsing liquid can in particular provide a heating means which is in contact with the pipe of the heating device from the outside.
- a heating means e.g. Thick film resistors, tubular heaters or heating wires are used, which directly touch the outside of the tube. Since the pipe is free of interruptions, the orientation of the heating means on the pipe is basically freely selectable.
- the heating means may e.g. in the form of mutually parallel rings, spirally or as flat strips are arranged transversely or parallel to the tube longitudinal axis. The method for applying the heating means to the tube jacket surface, for example by printing the tube with the thick-film resistor material is thereby simpler.
- the heating device may have a temperature sensor, for example an NTC or PTC resistor.
- the tube may also consist of temperature-resistant plastic, in particular electrically conductive plastic.
- the heating means may already be integrated into the pipe, so that the application of heating means can be omitted as a manufacturing step.
- the suction nozzle protrudes centrally into the region of the heating device and, with the formation of a radial gap, reaches the front side as far as the impeller.
- the flow of the scavenging liquid sucked in from the direction of the lid is deflected by 180 degrees in the impeller and then flows back to the lid in a helical coaxial manner with the sucked-in rinsing liquid in a ring-cylindrical space on the inside of the heater.
- the impeller in an advantageous embodiment of the invention in the direction of the housing cover curved cover plates for deflecting the axially sucked Spülillonkeitsströmung in the axially opposite direction to the discharge nozzle on.
- the cover plates can be hemispherical curved to deflect the centrally centrally or centrally sucked by the impeller rinsing liquid from the suction nozzle between the cover plates of the impeller almost completely on a curved path by 180 degrees.
- the outer diameter of the suction nozzle facing the cover plate is smaller than that of the opposite cover plate, since so the rinsing liquid can be optimally deflected into the hollow cylindrical space.
- blades of the impeller can promote by their shape and arrangement, the deflection of the flow.
- the vanes can be curved over their entire radial length and in the direction of the pressure-side outlet openings of the impeller. The curvature can be more pronounced at the blade ends in order to convey the flow at the exit from the impeller even more effectively the desired flow direction.
- the guide device may consist of fixed vanes, which are arranged annularly downstream of the outlet opening of the impeller.
- the vanes may easily extend radially in the annular cylindrical space. Its blade surface may be curved to further counteract the swirl of the flow exiting the impeller.
- the flow component is increased in the axial direction.
- the guide device is arranged on the lid.
- the guide can be connected as a separate part fixed to the lid or integrally formed on the lid.
- a one-piece design requires fewer items and thus cheaper the production of the pump housing.
- the housing cover has spiral-shaped guide elements for the flow line of the rinsing liquid from the heating device into the discharge nozzle.
- the guide elements facilitate the transition of the rinsing liquid from the ring-cylindrical space in the cylindrical discharge nozzle by focusing the flow towards the discharge nozzle.
- the guide elements are preferably integrally formed in the lid around the suction nozzle in the form of guide spirals. They are to be designed in such a way that the transfer of the rinsing liquid into the discharge nozzle takes place without a significant loss of kinetic energy.
- the housing cover is therefore at least partially made of an elastomer. This allows the lid to be demoulded non-destructively even with very complex geometries.
- the elastomeric part of the lid has the ability to largely adapt to the rinsing liquid flow during the deflection from the heating device into the pressure nozzle. As a result, it is possible to dispense with special spiral-shaped guide elements for guiding the flow largely.
- rigid moldings can stiffen the housing cover. You can ensure a defined position especially of the suction against the impeller to exclude collisions. In addition, the tightness of a rigid part of the lid z. B. opposite the heater are ensured reliable. Sections of the elastic deck are thereby clamped between the tube of the heater and the rigid moldings.
- FIG. 1 a first embodiment of a pump according to the invention 10 is shown, which consists of two main assemblies, namely an electric motor 12 and an adjoining hydraulic part 14.
- the hydraulic part 14 encloses a substantially hollow cylindrical housing cover 16, in concentric with a longitudinal axis 11 of the pump 10, a suction nozzle 18 is arranged. Seen from the outside, a discharge nozzle 20 is integrally formed on the housing cover 16, the wind skew to the axis 11 extends (see. FIG. 2 ).
- the housing cover 16 has connecting elements 22, with which the pump 10 is mounted within a dishwasher. Outside on the lateral surface of the housing cover 16, a plug contact strip 24 is arranged with seven parallel arranged side by side lugs 26 for the power supply of the pump 10.
- the pump 10 sucks flushing liquid from a washing container of a dishwasher centrally via the suction nozzle 18. Inside the housing cover 16 is carried out a heating of the rinsing liquid before it is pumped back via the discharge nozzle 20 back into the washing container of the dishwasher. The heating of the rinsing liquid takes place by means of a heating device (see. FIG. 2 ), which also draws their energy via the contact lugs 26 of the plug contact strip 24.
- the very compact design of the pump 10, in particular the small outer diameter of the hydraulic part 14, which is not substantially greater than that of the electric motor 12, allows a horizontal installation of the pump 10; its longitudinal axis 11 thus extends substantially horizontally.
- FIG. 2 shows an axial longitudinal section through the in FIG. 1
- a housing bottom 28 of the hydraulic part 14 connects to the end face of the electric motor 12 and extends to the housing cover 16.
- the longitudinal axis 13 at an acute angle to the longitudinal axis (13) of the discharge nozzle (20, 120) is arranged.
- a perforation-free metal tube 30 which is connected via a sealing member 32 with the housing cover 16 and a sealing member 34 liquid-tight with the housing bottom 28.
- On the lateral surface of the metal tube 30 are four-ring encircling and spaced from each other thick-film resistors 36 printed.
- the housing cover 16 of the suction nozzle 18 is centrally located, which adjoins an impeller 40 with one of its end faces to form a radial gap 38.
- the impeller 40 consists of a facing the suction nozzle 18 cover plate 42 and an opposite, facing the housing bottom 28 cover plate 44. Between the two curved cover plates 42 and 44, the blades 46 of the impeller 40 extend. It is rotatably connected to one end of a shaft 48 of Electric motor 12 which projects through the housing bottom 28 in the hydraulic part 14.
- a nozzle 52 with staffed vanes 54 is attached approximately at the height of the impeller 40.
- the housing cover 16 also has helical guide elements, a Leitspirale 21 to the flow line of the rinsing liquid from the heater 30, 36 in the discharge nozzle 20.
- the impeller 40 sucks through the suction nozzle 18 rinsing liquid from a washing container of a dishwasher and presses them radially outward as a result of the centrifugal force. Due to the curvature of the cover plates 42 and 44, the flushing liquid is thereby deflected in the radial direction along a curved path in the direction of the guide vanes 54 of the distributor 52 by more than 90 degrees parallel to the pump longitudinal axis 11.
- FIG. 3 represents, wherein the respective flow direction is symbolized by arrows.
- the rinsing liquid then does not impinge perpendicularly, but at an angle with respect to the longitudinal axis 11 on the inside of the metal tube 30.
- the vanes 54 of the nozzle 52 then help to redirect the rinse liquid A arriving axially via the suction port 18 in the direction of discharge port 20.
- the deflected rinsing liquid flow then flows along the inside of the metal tube 30 heated by the thick-film resistors 36 and is thereby brought to a desired temperature. This can be done evenly and with relatively little energy input in a short time due to the length of the tube 30 and the number of thick film resistors 36.
- the speed with which the flushing liquid flows past the inside of the tube 30 can be influenced by means of the angle of attack of the guide vanes 54 of the guide apparatus 52. For example, these can be adjusted depending on the program by an actuator connected to a control device.
- the rinsing liquid flow flows helically in the direction of the pressure nozzle 20.
- the vanes 54 of the nozzle 52 thereby convert rotational components of movement of the flow in horizontal component of motion, so that the rinsing liquid by a ring-cylindrical space man the inside of the heater 30, 36 sufficiently fast reaches the discharge nozzle.
- the Leitspirale 21 bundles the flow and gives it a largely laminar characteristic in front of the discharge nozzle 20, through which the rinsing liquid leaves the hydraulic part 14 in direction B again.
- FIG. 4 shows a single representation of the impeller 40 in a plan view. It has a cover plate 42 with a smaller and a cover plate 44 with a larger outer diameter. Between the two cover plates 42, 44 five blades 46 are arranged, which are curved in the radial direction. The rinsing liquid enters the impeller 40 centrally via the suction port 18, is pressed radially outwards by the rotor blades 46 between the cover disks 42, 44 due to the centrifugal force, and leaves the rotor wheel 40 again over its outer circumference.
- FIG. 5 shows a single view of the nozzle 52 in perspective view.
- the annular nozzle 52 includes radially outwardly facing, slightly adjusted guide vanes 54 which are integrally formed on a ring 51.
- the inner diameter D1 of the ring 51 corresponds to the outer diameter of the flange-like portion 50 of the housing cover 16, on which the nozzle 52 is pressed so that it rotatably on the flange-like portion 50 sits.
- FIG. 6 shows a further embodiment of a pump 110 according to the invention with an indicated electric motor 112 and a hydraulic part 114.
- the pump 110 has a housing cover 116, which essentially consists of an elastomeric part 117 with rubber-elastic properties.
- the elastomeric part 117 of the lid 116 replaces mainly the known from the first embodiment Leitspirale.
- the elastomeric part 117 is liquid-tight over two annular ribs 115 at a central suction port 118. Via two further ribs 113, the elastomeric part 110 is sealed against a metal tube 130.
- the metal tube 130 printed with the thick-film resistors 136 is connected on the front side on one side via a sealing element 134 to a housing bottom 128 and on the other side via a sealing element 132 to a dimensionally stable annular cover element 111.
- a rigid stiffening ring 107 At the junction with the suction nozzle 118, a rigid stiffening ring 107 and at the junction with the metal tube 130, a rigid stiffening ring 109 is arranged.
- the stiffening ring 107 which is angled in cross-section serves for the dimensional stability of the elastomeric part 117 in the region of the impeller 140. In this way it is also ensured that the elastomeric part 117 does not collide with the cover disk 142 of the impeller 140 during operation of the pump 110.
- this stably held by the stiffening ring 107 in its form portion of the elastomeric member 117 serves to form a radial gap 138 between the cover plate 142 of the impeller 140 and the suction nozzle 118th
- the elastomeric part 117 of the housing cover 116 may in this embodiment, in contrast to the in the FIGS. 1 to 5 embodiment shown to a diffuser and a Leitspirale be largely dispensed with.
- the elastomeric part 117 adapts to the rinsing fluid flow in its elastic region and thus ensures an optimal flow transition into the pressure port 120.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft eine Pumpe, insbesondere für Geschirrspülmaschinen, mit einem Gehäuse aus einem Gehäuseboden, einem Gehäusedeckel und einer dazwischen angeordneten Heizeinrichtung zum Erwärmen einer Spülflüssigkeit, die eine ringförmige Seitenwand des Gehäuses bildet, mit einem in dem Gehäuse angeordneten Laufrad, mit einem bezüglich der Drehachse des Laufrades im Gehäusedeckel axial angeordneten Saugstutzen und mit einem Druckstutzen.The present invention relates to a pump, in particular for dishwashers, comprising a housing comprising a housing bottom, a housing cover and a heater arranged therebetween for heating a rinsing liquid, which forms an annular side wall of the housing, with an arranged in the housing impeller, with respect to the Rotary axis of the impeller in the housing cover axially arranged suction nozzle and with a discharge nozzle.
Aus der
Der Erfindung liegt die Aufgabe zugrunde, eine einfache und kostengünstige Pumpe der eingangs genannten Art anzugeben, welche unter Vermeidung der vorgenannten Nachteile geringere äußere Abmessungen, insbesondere in radialer Richtung aufweist.The invention has for its object to provide a simple and inexpensive pump of the type mentioned, which has smaller external dimensions, in particular in the radial direction while avoiding the aforementioned disadvantages.
Erfindungsgemäß wird diese Aufgabe bei einer Pumpe der eingangs genannten Art dadurch gelöst, dass der Druckstutzen im Gehäusedeckel angeordnet ist. Die Anordnung des Druckstutzens im Deckel ermöglicht eine Reduzierung der äußeren Abmessungen der Pumpe in radialer Richtung bezogen auf deren Längsachse. Der Einbauraum, insbesondere die für die Pumpe erforderliche Einbauhöhe reduziert sich damit. Bei einem horizontalen Einbau der Pumpe unterhalb des Spülbehälters mit der Längsachse der Pumpe parallel zum Boden des Spülbehälters, lässt sich wertvolle Einbauhöhe sparen. Dadurch kann das Nutzvolumen des Spülbehälters vergrößert werden.According to the invention this object is achieved in a pump of the type mentioned above in that the discharge nozzle is arranged in the housing cover. The arrangement of the pressure port in the cover allows a reduction in the outer dimensions of the pump in the radial direction relative to the longitudinal axis thereof. The installation space, in particular reduces the installation height required for the pump with it. With a horizontal installation of the pump below the washing container with the longitudinal axis of the pump parallel to the bottom of the washing, valuable installation height can be saved. As a result, the useful volume of the washing container can be increased.
Erfindungsgemäß ist zwischen dem Laufrad und dem Druckstutzen eine Leitvorrichtung zur weiteren Strömungsumlenkung angeordnet.According to the invention, a guide device for further flow diversion is arranged between the impeller and the discharge nozzle.
Vorzugsweise ist vorgesehen, dass eine Längsachse des Saugstutzens in einem einen spitzen Winkel zur Längsachse des Druckstutzens angeordnet ist Außerdem kann der Saugstutzen über sehr kurze oder sogar ohne Verbindungselemente direkt mit einem Ablauf am Sumpf des Spülbehälters und der Druckstutzen mit einer Zuleitung zum Sprühsystem verbunden werden. Bei Anordnung von zwei mit dem Saug- und dem Druckstutzen korrespondierenden Anschlüssen am Sumpf, kann auf zusätzliche Teile, wie Schläuche und deren Befestigungsmittel verzichtet werden.Preferably, it is provided that a longitudinal axis of the suction nozzle is arranged at an acute angle to the longitudinal axis of the pressure nozzle In addition, the suction can be connected via very short or even without connecting elements directly with a drain at the bottom of the washing and the pressure nozzle with a supply line to the spray system. In the arrangement of two corresponding with the suction and the discharge nozzle connections at the bottom, can be dispensed with additional parts, such as hoses and their attachment means.
Die Anordnung von Saugstutzen und Druckstutzen im Deckel ermöglicht erfindungsgemäß einen einfachen Aufbau der Heizeinrichtung, nämlich mit einem Rohr mit geschlossenem kreisringförmigem Querschnitt. Aufwendige fertigungstechnische Umform- oder Bearbeitungsschritte für eine Durchbrechung in der Heizeinrichtung können somit entfallen. Sie ist damit weitgehend unter Verwendung von Normteilen herstellbar. Im Übrigen kann die Spülflüssigkeit in einem durchbrechungsfreien Rohr gleichförmiger als in einem Ring mit Durchbrechungen erwärmt werden, weil sich eine großflächige ungestörte Strömung des Wassers entlang der gesamten Rohrmantelfläche einstellt.The arrangement of suction nozzle and discharge nozzle in the lid according to the invention allows a simple structure of the heater, namely with a tube with a closed circular cross-section. Elaborate production engineering forming or processing steps for an opening in the heater can thus be omitted. It is thus largely produced using standard parts. Incidentally, the rinsing liquid can be heated in a breakthrough-free tube more uniform than in a ring with openings, because a large-scale undisturbed flow of water along the entire tube surface area sets.
Ein solches Rohr ist auch leicht austauschbar. Mit einer rohrförmigen Seitenwand ist zudem ein konstruktiv einfacher Aufbau des Gehäuses der Pumpe möglich, wobei der Gehäusedeckel und der Gehäuseboden aus Kunststoff und die rohrförmige Seitenwand aus Metall separat hergestellt werden können. Die Verwendung von Kunststoff ermöglicht neben einer kostengünstigen Herstellung der komplexen Geometrien des Gehäusedeckels und des Gehäusebodens auch eine Reduzierung des Gesamtgewichts der Pumpe. Kunststoff ist außerdem ein schlechter Wärmeleiter, so dass der Transport der erhitzten Spülflüssigkeit in der Pumpe nahezu energieverlustfrei erfolgen kann. Das Rohr der Heizeinrichtung ist vorteilhaft aus Metall gefertigt, da es aufgrund der guten Wärmeleiteigenschaften ein Maximum der Heizenergie an die Spülflüssigkeit überträgt.Such a tube is also easily replaceable. With a tubular side wall also a structurally simple construction of the housing of the pump is also possible, wherein the housing cover and the housing bottom made of plastic and the tubular side wall made of metal can be made separately. The use of plastic allows not only a cost-effective production of the complex geometries of the housing cover and the housing bottom but also a reduction of the total weight of the pump. Plastic is also a poor conductor of heat, so that the transport of the heated rinsing fluid in the pump can be done almost energy loss. The tube of the heater is advantageously made of metal manufactured because it transmits a maximum of heat energy to the rinsing liquid due to the good heat conduction properties.
Die Fertigung des Gehäusedeckels kann zudem ohne nennenswerten Mehraufwand für den Druckstutzen weiterhin beispielsweise im Spritzgussverfahren hergestellt werden. Die gewisse schon vorhandene Komplexität der Form des Deckels auf Grund des Saugstutzens wird durch die zusätzliche Anordnung des Druckstutzens nicht nennenswert erhöht.The production of the housing cover can also continue to be produced, for example, by injection molding without significant additional expense for the discharge nozzle. The certain existing complexity of the shape of the lid due to the suction nozzle is not significantly increased by the additional arrangement of the pressure nozzle.
Die zur Erwärmung der Spülflüssigkeit erforderliche Wärmeenergie kann insbesondere ein Heizmittel zur Verfügung stellen, das von außen mit dem Rohr der Heizeinrichtung in Kontakt steht. Als Heizmittel können z.B. Dickschichtwiderstände, Rohrheizkörper oder Heizdrähte zur Anwendung kommen, die die Außenseite des Rohres unmittelbar berühren. Da das Rohr frei von Unterbrechungen ist, ist die Ausrichtung der Heizmittel auf dem Rohr grundsätzlich frei wählbar. Die Heizmittel können z.B. in Form von parallel zueinander angeordneten Ringen, spiralförmig oder als flache Streifen quer oder parallel zur Rohrlängsachse angeordnet werden. Das Verfahren zur Aufbringung der Heizmittel auf die Rohrmantelfläche beispielsweise durch Bedrucken des Rohres mit dem Dickschichtwiderstandsmaterial ist dadurch einfacher. Als Überhitzungsschutz kann die Heizeinrichtung einen Temperatursensor, beispielsweise einen NTC- oder PTC-Widerstand aufweisen.The heat energy required for heating the rinsing liquid can in particular provide a heating means which is in contact with the pipe of the heating device from the outside. As the heating means, e.g. Thick film resistors, tubular heaters or heating wires are used, which directly touch the outside of the tube. Since the pipe is free of interruptions, the orientation of the heating means on the pipe is basically freely selectable. The heating means may e.g. in the form of mutually parallel rings, spirally or as flat strips are arranged transversely or parallel to the tube longitudinal axis. The method for applying the heating means to the tube jacket surface, for example by printing the tube with the thick-film resistor material is thereby simpler. As overheating protection, the heating device may have a temperature sensor, for example an NTC or PTC resistor.
Das Rohr kann auch aus temperaturbeständigem Kunststoff, insbesondere elektrisch leitfähigem Kunststoff bestehen. Bei dieser Ausführungsform können die Heizmittel bereits in das Rohr integriert sein, sodass das Aufbringen von Heizmitteln als Fertigungsschritt entfallen kann.The tube may also consist of temperature-resistant plastic, in particular electrically conductive plastic. In this embodiment, the heating means may already be integrated into the pipe, so that the application of heating means can be omitted as a manufacturing step.
In einem Ausführungsbeispiel ragt der Saugstutzen zentral in den Bereich der Heizeinrichtung hinein und reicht unter Bildung eines Radialspalts stirnseitig bis an das Laufrad heran. Das hat neben einer kompakten Bauweise den Vorteil, dass die durch den Saugstutzen angesaugte Spülflüssigkeit in einer gleichförmigen axialen Strömung gezielt bis an die Saugöffnung des Laufrades herangeführt werden kann. Während des Betriebs der Pumpe kann bei entsprechender Erwärmung der Gehäuseteile und somit auch des Saugstutzens schon eine Vorwärmung der durch den Saugstutzen angesaugten Spülflüssigkeit erfolgen. Dieser Effekt kann durch zusätzliche Heizmittel im oder am Saugstutzen verstärkt werden.In one exemplary embodiment, the suction nozzle protrudes centrally into the region of the heating device and, with the formation of a radial gap, reaches the front side as far as the impeller. This has, in addition to a compact design, the advantage that the flushing liquid sucked in through the suction nozzle can be selectively guided in a uniform axial flow up to the suction opening of the impeller. During operation of the pump can with appropriate heating of the housing parts and thus also of the suction already preheating of the Suction sucked rinsing liquid done. This effect can be enhanced by additional heating means in or at the suction nozzle.
Die Strömung der aus Richtung des Deckels angesaugten Spülflüssigkeit wird im Laufrad um 180 Grad umgelenkt und strömt dann spiralförmig koaxial zur angesaugten Spülflüssigkeit in einem ringzylinderförmigen Raum an der Innenseite der Heizung zum Deckel zurück. Damit dieser Strömungsumkehrvorgang möglichst energieverlustarm verläuft, weist das Laufrad bei einer vorteilhaften Ausgestaltung der Erfindung in Richtung des Gehäusedeckels gekrümmte Deckscheiben zum Umlenken der axial angesaugten Spülflüssigkeitsströmung in die axial entgegen gesetzte Richtung auf den Druckstutzen zu auf. Die Deckscheiben können dazu halbkugelförmig gekrümmt sein, um die axial zentral bzw. mittig vom Laufrad angesaugte Spülflüssigkeit aus dem Saugstutzen zwischen den Deckscheiben des Laufrades auf einer Kurvenbahn nahezu vollständig um 180 Grad umzulenken. Der äußere Durchmesser der zum Saugstutzen weisenden Deckscheibe ist kleiner als der der gegenüberliegenden Deckscheibe, da so die Spülflüssigkeit optimal in den hohlzylinderförmigen Raum umgelenkt werden kann.The flow of the scavenging liquid sucked in from the direction of the lid is deflected by 180 degrees in the impeller and then flows back to the lid in a helical coaxial manner with the sucked-in rinsing liquid in a ring-cylindrical space on the inside of the heater. In order for this flow reversal process to be as energy-efficient as possible, the impeller in an advantageous embodiment of the invention in the direction of the housing cover curved cover plates for deflecting the axially sucked Spülflüssigkeitsströmung in the axially opposite direction to the discharge nozzle on. The cover plates can be hemispherical curved to deflect the centrally centrally or centrally sucked by the impeller rinsing liquid from the suction nozzle between the cover plates of the impeller almost completely on a curved path by 180 degrees. The outer diameter of the suction nozzle facing the cover plate is smaller than that of the opposite cover plate, since so the rinsing liquid can be optimally deflected into the hollow cylindrical space.
Auch die für die Pumpenwirkung verantwortlichen Schaufeln des Laufrades können durch ihre Form und Anordnung das Umlenken der Strömung fördern. Bei einer weiteren vorteilhaften Ausgestaltung der Erfindung weist das Laufrad radial angestellte Schaufeln auf. Die Schaufeln können über ihre gesamte radiale Länge und in Richtung der druckseitigen Auslassöffnungen des Laufrades gekrümmt sein. Die Krümmung kann dabei an den Schaufelenden stärker ausgeprägt sein, um der Strömung beim Austritt aus dem Laufrad die gewünschte Strömungsrichtung noch effektiver zu vermitteln.Also responsible for the pump action blades of the impeller can promote by their shape and arrangement, the deflection of the flow. In a further advantageous embodiment of the invention, the impeller on radially employed blades. The vanes can be curved over their entire radial length and in the direction of the pressure-side outlet openings of the impeller. The curvature can be more pronounced at the blade ends in order to convey the flow at the exit from the impeller even more effectively the desired flow direction.
Im Bereich der Austrittsöffnungen des Laufrades hat die Strömung auf Grund der Rotation des Laufrades eine große radiale Richtungskomponente. Die Leitvorrichtung kann aus feststehenden Leitschaufeln bestehen, die stromab der Austrittsöffnung des Laufrades ringförmig angeordnet sind. Die Leitschaufeln können sich leicht angestellt radial in dem ringzylinderförmigen Raum erstrecken. Deren Schaufelfläche kann gekrümmt sein, um dem Drall der aus dem Laufrad austretenden Strömung weiter entgegenzuwirken. Damit wird die Strömungskomponente in axialer Richtung vergrößert.In the region of the outlet openings of the impeller, the flow due to the rotation of the impeller has a large radial direction component. The guide device may consist of fixed vanes, which are arranged annularly downstream of the outlet opening of the impeller. The vanes may easily extend radially in the annular cylindrical space. Its blade surface may be curved to further counteract the swirl of the flow exiting the impeller. Thus, the flow component is increased in the axial direction.
Nach einer weiteren vorteilhaften Ausgestaltung der Erfindung ist die Leitvorrichtung am Deckel angeordnet. Die Leitvorrichtung kann dazu als eigenständiges Teil fest mit dem Deckel verbunden oder auch einstückig am Deckel angeformt sein. Eine einstückige Ausbildung erfordert weniger Einzelteile und verbilligt damit die Herstellung des Pumpengehäuses.According to a further advantageous embodiment of the invention, the guide device is arranged on the lid. The guide can be connected as a separate part fixed to the lid or integrally formed on the lid. A one-piece design requires fewer items and thus cheaper the production of the pump housing.
Bei einer weiteren vorteilhaften Ausführungsform der Erfindung weist der Gehäusedeckel spiralförmige Leitelemente zur Strömungsleitung der Spülflüssigkeit von der Heizeinrichtung in den Druckstutzen auf. Die Leitelemente erleichtern den Übergang der Spülflüssigkeit aus dem ringzylinderförmigen Raum in den zylinderförmigen Druckstutzen, indem sie die Strömung in Richtung Druckstutzen fokussieren. Die Leitelemente sind vorzugsweise in Form von Leitspiralen fest im Deckel außen um den Saugstutzen herum angeformt. Sie sind so auszubilden, dass der Übergang der Spülflüssigkeit in den Druckstutzen ohne nennenswerten Verlust an Bewegungsenergie erfolgt.In a further advantageous embodiment of the invention, the housing cover has spiral-shaped guide elements for the flow line of the rinsing liquid from the heating device into the discharge nozzle. The guide elements facilitate the transition of the rinsing liquid from the ring-cylindrical space in the cylindrical discharge nozzle by focusing the flow towards the discharge nozzle. The guide elements are preferably integrally formed in the lid around the suction nozzle in the form of guide spirals. They are to be designed in such a way that the transfer of the rinsing liquid into the discharge nozzle takes place without a significant loss of kinetic energy.
Auch bei der Herstellung des Deckels aus Kunststoff sind der Komplexität der herstellbaren Geometrien fertigungsbedingt Grenzen gesetzt. Sie sind z. B. dann erreicht, wenn auf Grund von Hinterschneidungen Teile nach dem Gießen nicht mehr zerstörungsfrei aus der Gießform entnehmbar wären. Bei einer alternativen vorteilhaften Ausführungsform der Erfindung besteht der Gehäusedeckel daher zumindest teilweise aus einem Elastomer. Damit lässt sich der Deckel auch bei sehr komplexen Geometrien zerstörungsfrei entformen. Außerdem besitzt der elastomere Teil des Deckels auf Grund seiner gummielastischen Eigenschaften die Fähigkeit, sich der Spülflüssigkeitsströmung bei der Umlenkung aus der Heizeinrichtung in den Druckstutzen weitgehend anzupassen. Dadurch kann auf besondere spiralförmige Leitelemente zur Strömungsführung weitgehend verzichtet werden.Also in the production of the lid made of plastic, the complexity of manufacturable geometries due to production limits. They are z. B. then reached, if due to undercuts parts after casting would no longer be destructively removed from the mold. In an alternative advantageous embodiment of the invention, the housing cover is therefore at least partially made of an elastomer. This allows the lid to be demoulded non-destructively even with very complex geometries. In addition, due to its rubber-elastic properties, the elastomeric part of the lid has the ability to largely adapt to the rinsing liquid flow during the deflection from the heating device into the pressure nozzle. As a result, it is possible to dispense with special spiral-shaped guide elements for guiding the flow largely.
Damit der Deckel aus dem elastomeren Material die Anforderungen an Stabilität und Formtreue gegenüber den an ihn angrenzenden Teilen - insbesondere das Laufrad - erfüllt, können bei einer vorteilhaften Ausgestaltung der Erfindung starre Formteile den Gehäusedeckel versteifen. Sie können eine definierte Lage vor allem des Saugstutzens gegenüber dem Laufrad sicherstellen, um Kollisionen auszuschließen. Außerdem kann die Dichtheit eines starren Teils des Deckels z. B. gegenüber der Heizeinrichtung zuverlässiger gewährleistet werden. Abschnitte des elastischen Deckes werden dabei zwischen dem Rohr der Heizeinrichtung und den starren Formteilen festgeklemmt.In order for the lid of the elastomeric material to meet the requirements for stability and dimensional stability with respect to the parts adjacent to it, in particular the impeller, in an advantageous embodiment of the invention, rigid moldings can stiffen the housing cover. You can ensure a defined position especially of the suction against the impeller to exclude collisions. In addition, the tightness of a rigid part of the lid z. B. opposite the heater are ensured reliable. Sections of the elastic deck are thereby clamped between the tube of the heater and the rigid moldings.
Das Prinzip der Erfindung anhand einer Zeichnung beispielshalber noch näher erläutert. Es zeigen:
- Figur 1:
- eine perspektivische Darstellung einer ersten Ausführungsform der erfindungsgemäßen Pumpe;
- Figur 2:
- einen axialen Längsschnitt durch die in
Figur 1 gezeigte Pumpe; - Figur 3:
- den Hydraulikteil der in
Figur 2 gezeigte Pumpe; - Figur 4:
- eine Vorderansicht des in
Figur 2 dargestellten Laufrades; - Figur 5:
- eine perspektivische Ansicht des in
Figur 2 dargestellten Leitapparats; - Figur 6:
- einen axialen Längsschnitt durch eine zweite Ausführungsform der erfindungsgemäßen Pumpe.
- FIG. 1:
- a perspective view of a first embodiment of the pump according to the invention;
- FIG. 2:
- an axial longitudinal section through the in
FIG. 1 shown pump; - FIG. 3:
- the hydraulic part of in
FIG. 2 shown pump; - FIG. 4:
- a front view of the in
FIG. 2 illustrated impeller; - FIG. 5:
- a perspective view of the in
FIG. 2 illustrated distributor; - FIG. 6:
- an axial longitudinal section through a second embodiment of the pump according to the invention.
In
Im Betrieb saugt die Pumpe 10 Spülflüssigkeit aus einem Spülbehälter einer Geschirrspülmaschine zentral über den Saugstutzen 18 an. Innerhalb des Gehäusedeckels 16 erfolgt eine Erwärmung der Spülflüssigkeit bevor sie über den Druckstutzen 20 wieder in den Spülbehälter der Geschirrspülmaschine zurückgepumpt wird. Die Erwärmung der Spülflüssigkeit erfolgt dabei mittels einer Heizeinrichtung (vgl.
Der sehr kompakte Aufbau der Pumpe 10, insbesondere der geringe Außendurchmesser des Hydraulikteils 14, der nicht wesentlich größer ist als der des Elektromotors 12, ermöglicht einen liegenden Einbau der Pumpe 10; ihre Längsachse 11 verläuft also im Wesentlichen horizontal.The very compact design of the
Im Gehäusedeckel 16 ist zentral der Saugstutzen 18 angeordnet, der unter Ausbildung eines Radialspalts 38 mit einer seiner Stirnseiten an ein Laufrad 40 angrenzt. Das Laufrad 40 besteht aus einer zum Saugstutzen 18 weisenden Deckscheibe 42 und einer gegenüberliegenden, zum Gehäuseboden 28 weisenden Deckscheibe 44. Zwischen den beiden gekrümmten Deckscheiben 42 und 44 erstrecken sich die Schaufeln 46 des Laufrades 40. Es ist drehfest mit einem Ende einer Welle 48 des Elektromotors 12 verbunden, das durch den Gehäuseboden 28 in den Hydraulikteil 14 ragt.In the
Auf einen flanschartigen Abschnitt 50 des Gehäusedeckels 16 ist etwa in der Höhe des Laufrades 40 ein Leitapparat 52 mit angestellten Leitschaufeln 54 aufgesteckt. Der Gehäusedeckel 16 weist außerdem spiralförmige Leitelemente, eine Leitspirale 21 zur Strömungsleitung der Spülflüssigkeit von der Heizeinrichtung 30, 36 in den Druckstutzen 20 auf.On a flange-
Im Betrieb der Pumpe 10 saugt das Laufrad 40 durch den Saugstutzen 18 Spülflüssigkeit aus einem Spülbehälter einer Geschirrspülmaschine an und drückt sie infolge der Fliehkraft radial nach außen. Aufgrund der Krümmung der Deckscheiben 42 und 44 wird die Spülflüssigkeit dabei in radialer Richtung entlang einer Kurvenbahn in Richtung der Leitschaufeln 54 des Leitapparates 52 um mehr als 90 Grad parallel zur Pumpenlängsachse 11 umgelenkt. Zur besseren Verdeutlichung des Strömungsweges der Spülflüssigkeit durch den Hydraulikteil 14 ist dieser separat in
Die Spülflüssigkeit trifft danach nicht senkrecht, sondern in einem Winkel bezogen auf die Längsächse 11 auf die Innenseite des Metallrohrs 30. Die Leitschaufeln 54 des Leitapparats 52 helfen dann die axial über den Saugstutzen 18 ankommende Spülflüssigkeitsströmung A in Richtung Druckstutzen 20 umzulenken. Die umgelenkte Spülflüssigkeitsströmung strömt dann an der von den Dickschichtwiderständen 36 erhitzten Innenseite des Metallrohres 30 entlang und wird dabei auf eine gewünschte Temperatur gebracht. Dies kann aufgrund der Länge des Rohres 30 und der Anzahl der Dickschichtwiderstände 36 gleichmäßig und mit relativ geringer Energiezufuhr in kurzer Zeit erfolgen. Die Geschwindigkeit, mit der die Spülflüssigkeit an der Innenseite des Rohres 30 vorbei strömt, kann mit Hilfe des Anstellwinkels der Leitschaufeln 54 des Leitapparates 52 beeinflusst werden. Diese können dazu beispielsweise programmabhängig von einem mit einer Steuerungseinrichtung verbundenen Aktuator verstellt werden.The rinsing liquid then does not impinge perpendicularly, but at an angle with respect to the
Aufgrund der Rotation des Laufrades 40 fließt die Spülflüssigkeitsströmung spiralförmig in Richtung des Druckstutzens 20. Die Leitschaufeln 54 des Leitapparates 52 wandeln dabei rotatorische Bewegungskomponenten der Strömung in horizontale Bewegungskomponente um, sodass die Spülflüssigkeit durch einen ringzylinderförmigen Raum man der Innenseite der Heizeinrichtung 30, 36 ausreichend schnell zum Druckstutzen gelangt. Die Leitspirale 21 bündelt die Strömung und verleiht ihr eine weitgehend laminare Charakteristik vor dem Druckstutzen 20, durch den die Spülflüssigkeit den Hydraulikteil 14 in Richtung B wieder verlässt.Due to the rotation of the
Der elastomere Teil 117 liegt über zwei ringförmige Rippen 115 flüssigkeitsdicht an einem zentralen Saugstutzen 118 an. Über zwei weitere Rippen 113 wird der elastomere Teil 110 gegenüber einem Metallrohr 130 abgedichtet. Das mit den Dickschichtwiderständen 136 bedruckte Metallrohr 130 ist stirnseitig auf der einen Seite über ein Dichtungselement 134 mit einem Gehäuseboden 128 und auf der anderen Seite über ein Dichtungselement 132 mit einem formstabilen ringförmigen Deckelelement 111 verbunden.The
Damit an den Verbindungsstellen zwischen dem elastomeren Teil 117 und dem Saugstutzen 118 bzw. dem Rohr 130 die für die Dichtheit erforderliche Anpresskraft wirkt, sind an diese Stellen starre Formteile vorgesehen. An der Verbindungsstelle zum Saugstutzen 118 ist ein starrer Versteifungsring 107 und an der Verbindungsstelle zum Metallrohr 130 ein starrer Versteifungsring 109 angeordnet. Der im Querschnitt abgewinkelt ausgeformte Versteifungsring 107 dient außerdem der Formstabilität des elastomeren Teils 117 im Bereich des Laufrades 140. Auf diese Weise ist auch sichergestellt, dass der elastomere Teil 117 im Betrieb der Pumpe 110 nicht mit der Deckscheibe 142 des Laufrades 140 kollidiert. Gleichzeitig dient dieser durch den Versteifungsring 107 in seiner Form stabil gehaltene Abschnitt des elastomeren Teils 117 zur Ausbildung eines Radialspalts 138 zwischen der Deckscheibe 142 des Laufrades 140 und dem Saugstutzen 118.Thus, at the joints between the
Aufgrund der gummielastischen Eigenschaften des elastomeren Teils 117 des Gehäusedeckels 116 kann bei dieser Ausführungsform im Unterschied zu der in den
- 10, 11010, 110
- - Pumpe- pump
- 11, 1311, 13
- - Längsachse- longitudinal axis
- 12, 11212, 112
- - Elektromotor- electric motor
- 14, 11414, 114
- - Hydraulikteil- Hydraulic part
- 16, 11616, 116
- - Gehäusedeckel- Housing cover
- 18, 11818, 118
- - Saugstutzen- Suction nozzle
- 1919
- - rohrförmiger Bereich- tubular area
- 20, 12020, 120
- - Druckstutzen- discharge nozzle
- 2121
- - Leitspirale- Leitspirale
- 2222
- - Verbindungselement- Connecting element
- 2424
- - Steckkontaktleiste- Plug contact strip
- 2626
- - Kontaktfahne- Contact banner
- 28, 12828, 128
- - Gehäuseboden- Caseback
- 30, 13030, 130
- - Metallrohr- metal pipe
- 32, 34, 132, 13432, 34, 132, 134
- - Dichtungselement- sealing element
- 36, 13636, 136
- - Dickschichtwiderstand- Thick film resistor
- 38, 13838, 138
- - Radialspalt- Radial gap
- 40, 14040, 140
- - Laufrad- Wheel
- 42, 142, 44, 14442, 142, 44, 144
- - Deckscheibe- cover disc
- 46, 14646, 146
- - Laufschaufel- Blade
- 4848
- - Welle- Wave
- 5050
- - flanschartiger Abschnitt- flange-like section
- 5151
- - Ring- Ring
- 5252
- - Leitapparat- Diaphragm
- 5454
- - Leitschaufel- Guide vane
- 107, 109107, 109
- - Versteifungsring- stiffening ring
- 111111
- - ringförmiges Deckelelement- annular cover element
- 113,115113.115
- - Rippen- ribs
- 117117
- - elastomerer Teil des Gehäusedeckels 116- Elastomeric part of the housing cover 116th
- A, BA, B
- - Strömungsrichtung der Spülflüssigkeit- Flow direction of the rinsing liquid
- D1D1
- - Innendurchmesser- inside diameter
Claims (18)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007017271A DE102007017271A1 (en) | 2007-04-12 | 2007-04-12 | Pump with heating device |
EP08735673A EP2150165B1 (en) | 2007-04-12 | 2008-04-02 | Pump having a heating device |
Related Parent Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08735673A Division-Into EP2150165B1 (en) | 2007-04-12 | 2008-04-02 | Pump having a heating device |
EP08735673A Division EP2150165B1 (en) | 2007-04-12 | 2008-04-02 | Pump having a heating device |
EP08735673.9 Division | 2008-04-02 |
Publications (2)
Publication Number | Publication Date |
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EP2384684A1 true EP2384684A1 (en) | 2011-11-09 |
EP2384684B1 EP2384684B1 (en) | 2016-08-31 |
Family
ID=39744209
Family Applications (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11161996.1A Active EP2377451B1 (en) | 2007-04-12 | 2008-04-02 | Pump with heating device |
EP11161999.5A Active EP2377452B1 (en) | 2007-04-12 | 2008-04-02 | Pump with heating device |
EP11162003.5A Active EP2384685B1 (en) | 2007-04-12 | 2008-04-02 | Pump with heating device |
EP11162002.7A Active EP2384684B1 (en) | 2007-04-12 | 2008-04-02 | Pump with heating device |
EP08735673A Active EP2150165B1 (en) | 2007-04-12 | 2008-04-02 | Pump having a heating device |
Family Applications Before (3)
Application Number | Title | Priority Date | Filing Date |
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EP11161996.1A Active EP2377451B1 (en) | 2007-04-12 | 2008-04-02 | Pump with heating device |
EP11161999.5A Active EP2377452B1 (en) | 2007-04-12 | 2008-04-02 | Pump with heating device |
EP11162003.5A Active EP2384685B1 (en) | 2007-04-12 | 2008-04-02 | Pump with heating device |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
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EP08735673A Active EP2150165B1 (en) | 2007-04-12 | 2008-04-02 | Pump having a heating device |
Country Status (7)
Country | Link |
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US (1) | US8245718B2 (en) |
EP (5) | EP2377451B1 (en) |
CN (1) | CN101657137B (en) |
DE (2) | DE102007017271A1 (en) |
ES (2) | ES2393036T3 (en) |
PL (5) | PL2384684T3 (en) |
WO (1) | WO2008125488A2 (en) |
Families Citing this family (71)
Publication number | Priority date | Publication date | Assignee | Title |
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KR101063398B1 (en) * | 2009-12-01 | 2011-09-07 | 기아자동차주식회사 | Washer pump device with washer liquid heating function |
DE102010031559A1 (en) * | 2010-07-20 | 2012-01-26 | BSH Bosch und Siemens Hausgeräte GmbH | Sealing arrangement, method for producing such a sealing arrangement and dishwasher |
DE102010043727A1 (en) * | 2010-11-10 | 2012-05-10 | E.G.O. Elektro-Gerätebau GmbH | pump |
DE102011003467A1 (en) | 2011-02-01 | 2012-08-02 | E.G.O. Elektro-Gerätebau GmbH | Heating device for a pump and pump |
DE102011003464A1 (en) | 2011-02-01 | 2012-04-26 | E.G.O. Elektro-Gerätebau GmbH | Tubular heating device for use as aquiferous region of pumping chamber of e.g. radial flow pump for dishwasher, has pipe-shaped carrier whose natural oscillation behavior and natural frequency are changed by continuous deformation |
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Also Published As
Publication number | Publication date |
---|---|
CN101657137B (en) | 2012-07-18 |
EP2150165A2 (en) | 2010-02-10 |
WO2008125488A3 (en) | 2008-12-18 |
EP2150165B1 (en) | 2012-10-10 |
CN101657137A (en) | 2010-02-24 |
EP2377452A1 (en) | 2011-10-19 |
EP2384684B1 (en) | 2016-08-31 |
PL2150165T3 (en) | 2013-03-29 |
PL2377451T3 (en) | 2017-01-31 |
DE102007017271A1 (en) | 2008-10-16 |
ES2393036T3 (en) | 2012-12-18 |
PL2377452T3 (en) | 2014-05-30 |
US8245718B2 (en) | 2012-08-21 |
ES2438842T3 (en) | 2014-01-20 |
EP2377451A1 (en) | 2011-10-19 |
PL2384685T3 (en) | 2017-02-28 |
EP2384685A1 (en) | 2011-11-09 |
DE202008018234U1 (en) | 2012-08-06 |
PL2384684T3 (en) | 2017-02-28 |
US20100126534A1 (en) | 2010-05-27 |
WO2008125488A2 (en) | 2008-10-23 |
EP2384685B1 (en) | 2016-08-31 |
EP2377451B1 (en) | 2016-08-31 |
EP2377452B1 (en) | 2013-11-27 |
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