EP3492752B1 - Pompe à impulseur - Google Patents

Pompe à impulseur Download PDF

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Publication number
EP3492752B1
EP3492752B1 EP18207152.2A EP18207152A EP3492752B1 EP 3492752 B1 EP3492752 B1 EP 3492752B1 EP 18207152 A EP18207152 A EP 18207152A EP 3492752 B1 EP3492752 B1 EP 3492752B1
Authority
EP
European Patent Office
Prior art keywords
impeller
auxiliary outlet
additional outlet
pump chamber
flap
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
EP18207152.2A
Other languages
German (de)
English (en)
Other versions
EP3492752A1 (fr
Inventor
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
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 EGO Elektro Geratebau GmbH filed Critical EGO Elektro Geratebau GmbH
Priority to PL18207152T priority Critical patent/PL3492752T3/pl
Publication of EP3492752A1 publication Critical patent/EP3492752A1/fr
Application granted granted Critical
Publication of EP3492752B1 publication Critical patent/EP3492752B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
    • F04D29/466—Fluid-guiding means, e.g. diffusers adjustable especially adapted for liquid fluid 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
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
    • F04D15/0016—Control, e.g. regulation, of pumps, pumping installations or systems by using valves mixing-reversing- or deviation valves
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal 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
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • 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
    • F04D29/007—Details, component parts, or accessories 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
    • F04D29/4293—Details of fluid inlet or outlet
    • 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
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
    • F04D29/48—Fluid-guiding means, e.g. diffusers adjustable for unidirectional fluid flow in reversible pumps
    • F04D29/486—Fluid-guiding means, e.g. diffusers adjustable for unidirectional fluid flow in reversible pumps especially adapted for liquid pumps
    • 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
    • F05D2250/00—Geometry
    • F05D2250/50—Inlet or outlet
    • F05D2250/52—Outlet
    • 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
    • F05D2260/00—Function
    • F05D2260/30—Retaining components in desired mutual position
    • F05D2260/38—Retaining components in desired mutual position by a spring, i.e. spring loaded or biased towards a certain position

Definitions

  • the invention relates to an impeller pump as it is used in particular in a water-bearing household appliance such as a washing machine or a dishwasher.
  • an impeller pump is known with a pump chamber including inlet and outlet.
  • An additional outlet from the pump chamber is provided, which can be closed by an additional outlet flap.
  • the additional outlet flap has two stable positions. Depending on the direction of rotation of an impeller of the impeller pump, the additional outlet flap is held stably in a closed position or stably in an open position, with fluid then being able to be pumped out to the additional outlet or not.
  • an impeller pump is known with an inlet into and an outlet from a pump chamber. An additional outlet from the pump chamber is provided.
  • An impeller can turn in two directions of rotation. In one direction of rotation, it conveys fluid out to the outlet and closes the additional outlet by means of a movable flap made of elastic material. In the other direction of rotation, the fluid flow pushes the elastic flap away from the additional outlet so that it is open and fluid can be conveyed through here.
  • an impeller pump for a dishwasher, which has an additional outlet at an outlet from a pump chamber. This is spring-loaded. An opening is closed by an elastic membrane body which is held in the closed position under spring tension.
  • Another impeller pump is known with a pump chamber that rotates approximately in a ring around an impeller.
  • An additional outlet which is closed by means of an additional outlet flap, extends in the lateral direction from an outer circumferential wall of the pump chamber. If the impeller rotates in a main direction of rotation, a flow is generated in the pump chamber that holds the additional outlet flap in a closed position, whereby the additional outlet is and remains closed. If the impeller rotates in the opposite direction, the flow opens the additional outlet flap and releases the additional outlet.
  • the additional outlet flap opens so far that it closes the main outlet from the pump chamber. This is achieved by arranging the additional outlet and the additional outlet flap in a region of the outer wall of the pump chamber which lies outside the impeller in the radial direction.
  • the invention is based on the object of creating an impeller pump mentioned at the beginning, with which the problems of the prior art can be solved and, in particular, it is possible to pump water out of a household appliance in which the impeller pump is installed as simply and efficiently as possible at the same time . to be able to empty the pump chamber.
  • the impeller pump has a pump chamber on or in which an inlet into the pump chamber and an outlet from the pump chamber are provided.
  • An impeller rotates in the pump chamber, usually driven by a pump motor flanged to or attached to the pump.
  • the impeller has a direction of rotation to pump fluid from the inlet to the outlet. This is a preferred direction of rotation, the blades of the impeller being particularly preferably shaped or bent in such a way that they can convey the fluid particularly efficiently from the inlet to the outlet in this direction of rotation of the impeller.
  • An additional outlet from the pump chamber including an additional outlet flap on it or for it.
  • the additional outlet flap has a closed position and at least one open position. Between these two positions it is movable, advantageously designed to be rotatable, or alternatively bendable. It is preferably designed to be rotatable about an axis, that is to say is rotatably mounted and is not only designed to be elastically movable and deflectable, for example by bending or twisting.
  • the additional outlet flap closes the additional outlet, advantageously largely or even completely.
  • the additional outlet flap can be approximately the same size as the additional outlet, advantageously somewhat larger.
  • the additional outlet is at least partially open or the additional outlet flap at least partially releases or opens it.
  • the additional outlet can therefore be more or less open.
  • an adjusting means is provided, whereby the additional outlet flap is so force-loaded that it is automatically moved from the closed position to one of the open positions when no fluid or water is pumped from the inlet to the outlet or when the additional
  • the outlet flap is free of fluid flow in the direction of rotation of the impeller for pumping the fluid during normal operation.
  • the actuating means can therefore bring the additional outlet flap at least into the first open position or into the least open open position. Under certain circumstances it can therefore be sufficient if the actuating means open the additional outlet flap only a little.
  • the additional outlet flap including the actuating means which are advantageously passive actuating means, with the automatic opening, actuators such as electromagnets, piezo drives or electric motors that need to be controlled specifically can be dispensed with. This considerably simplifies the construction of the impeller pump and its operation. Furthermore, installation space can also be saved.
  • the additional outlet flap can be moved by the actuating means into that open position from the group of several open positions that is as wide as possible and / or in which it is as far as possible from the closed position. Position is removed. It can thus be achieved that the additional outlet flap is in the closed position. Starting in this closed position, a movement can be provided for opening, in which the additional outlet flap is initially slightly opened, for example after a rotation through only a few degrees of arc angle. However, the actuating means tries to open the additional outlet flap even further, in particular to open it as far as possible. Then, even if the direction of rotation of the impeller is reversed, as much fluid or water as possible can be pumped to the additional outlet from the pump chamber.
  • the additional outlet flap has rotated through an angle of 10 ° to 45 °, preferably 15 ° to 30 °. If the fluid flows in the opposite main direction of rotation of the impeller, i.e. if its direction of rotation is reversed, towards the open additional outlet flap and through the additional outlet, a particularly high efficiency can be achieved by the additional outlet flap. It not only closes the additional outlet in the closed position, but also directs the fluid as well as possible into the additional outlet when the impeller is rotating in the opposite direction in the open position, in particular in the open position that is as wide as possible.
  • the actuating means can be several possibilities for the formation of the actuating means. They are advantageously designed to be resilient or have spring means as adjusting means in order to load the additional outlet flap with force so that it moves out of the closed position.
  • the spring means should be installed in such a way that they impede a fluid flow as little as possible.
  • plastic spring means can advantageously be used as the spring means. These have the advantage that they do not corrode in permanent contact with water.
  • Such spring means can advantageously have a voluminous block body, which can particularly advantageously have a cylindrical shape.
  • the spring means can have the shape of a cuboid and consist of elastic material, in particular plastic.
  • a suitable plastic here is silicone, and possibly also rubber.
  • a conventional spring can be used, for example a leaf spring, a helical spring, a spiral spring or a combined helical spiral spring.
  • a spring can also be wound around an axis of rotation and, through twisting or twisting, build up a torque which then tries to open the additional outlet flap.
  • the additional outlet flap itself can be soft or elastic or consist of such an elastic material, in particular an elastomer, that it itself forms the adjusting means or the spring means by which it is opened.
  • the spring or the spring action is then integrated into the additional outlet flap, so to speak. It can be slightly open in a normal position without fluid flow, that is to say in a relatively slightly open open position. Depending on the direction of flow, it is then pushed open or closed or pushed into the closed position, thus closing the additional outlet.
  • the pump can have sealing means on the additional outlet and / or on the additional outlet flap. These are advantageously designed to run around the additional outlet, but at least along one side, for example close to the impeller.
  • the additional outlet flap can thus be kept relatively simple. Provision can be made for a sealant to be injected onto the pump housing, for which a multi-component injection molding process is particularly advantageously suitable. This is particularly advantageous when the sealant has a type of sealing lip, round cord seal or the like. is.
  • the sealing means can then namely also have a sealing rubber which, due to its elasticity, ensures a sealing effect in the closed position.
  • These sealing means can also be formed by the aforementioned design of the additional outlet flap made of elastic material, so that the flap itself also seals sufficiently due to its soft material.
  • a labyrinth seal can also be provided between the additional outlet flap and the edge of the additional outlet on or near which the flap runs.
  • a labyrinth seal can have a stepped course of a sealing surface between the additional outlet and the additional outlet flap, for example with one to three angular steps.
  • the sealing effect may not be as good as that of an elastic rubber seal, but it is sufficient for the impeller pump to operate.
  • the additional outlet flap in the closed position negatively affects the operation of the pump and the efficiency of the pump as little as possible. It should also have as little or no additional flow resistance as possible represent when the impeller is pumping fluid from the inlet to the outlet of the pump chamber.
  • the additional outlet flap in the closed position continues the course of the pump chamber or a wall of the pump chamber in this area around the flap, in particular also curves and / or bulges corresponding to the area surrounding the additional outlet of the pump chamber determine the design of the additional outlet flap at least on its outside. If the surrounding area of the pump chamber is flat, then the outlet flap can also be designed to be flat on the outside. Thus, in the closed position, the pump chamber, in particular its wall, should have a shape as if the additional outlet flap did not even exist.
  • the additional outlet flap has an inside which, in the closed position, points towards the additional outlet. It therefore faces away from the pump chamber, while the aforementioned outside of the additional outlet flap covers the additional outlet or is the surface on which the fluid flows from inlet to outlet during pumping, especially in the closed position.
  • the inside can advantageously be convexly curved, namely convexly away from the additional outlet or towards the pump chamber. This special shape is intended to ensure that in the open position of the additional outlet flap or the maximum open position, the fluid that flows through the opened additional outlet flap into the additional outlet when the impeller rotates in the opposite direction flows into the additional outlet as quickly and efficiently as possible. Through this curvature, the pumped fluid should be captured as well as possible, so to speak, and directed into the additional outlet.
  • a lateral wall can advantageously be provided on the inside of the additional outlet flap, which has an angle between 60 ° and 120 ° to the outside. If the outside is flat or is largely flat, this angle can also be between 80 ° and 100 °. It can particularly advantageously be 90 ° or a little less.
  • lateral wall is never completely moved out of the opening of the additional outlet when the pump is in operation.
  • a stop can be provided, advantageously on the lateral wall itself, which can hit an inner edge of the additional outlet.
  • the lateral wall can preferably have a longitudinal outer edge which, in the maximally wide open position, runs over a large part of its length in a direction away from the axis of rotation of the additional outlet flap, in particular over its entire length, within the additional outlet. In this way, on the one hand, a certain guidance of the additional outlet flap can be achieved or a support in the open positions and especially in the fully open position.
  • a projection or the like can be provided on the lateral wall. be provided for the aforementioned stop, in particular on the named free longitudinal outer edge of the lateral wall, particularly preferably as far away as possible from the axis of rotation of the additional outlet flap, which just forms the stop on the pump housing or on the wall of the pump chamber.
  • the maximum wide open open position is precisely limited. In this way, an opening that is too wide can be avoided, which would possibly no longer be favorable in terms of flow.
  • the additional outlet flap can also be prevented from being torn out.
  • the lateral wall runs parallel to a circumferential outer wall of the pump chamber.
  • the lateral wall can therefore also be curved in its longitudinal course away from the axis of rotation of the additional outlet flap.
  • the lateral wall can extend at a distance from a circumferential outer wall of the pump chamber that is between 0.5 cm and 2 cm. This means that the lateral wall can have a relatively small distance from the outer wall of the pump chamber, but that this distance is already given. This is particularly advantageous when the impeller pump has a heated outer wall of the pump chamber.
  • the additional outlet flap still has to be integrated into the existing installation space in the pump chamber.
  • the pump chamber runs annularly around the impeller.
  • the additional outlet is arranged in an annular end face of the pump chamber in the axial direction along the axis of rotation of the impeller. This is a bottom surface or a top surface of the pump chamber.
  • Such an end face is arranged in such a way that it runs approximately in a plane of one of the two top faces of the impeller. It can particularly advantageously be provided that this end face is remote from the outlet from the pump chamber, see FIG DE 102013211180 A1 . It can thus be achieved that the fluid flow behaves quite differently when pumping fluid out of the outlet than when pumping out of the additional outlet.
  • the provision of the additional outlet flap on one of the named End faces of the pump chamber and not on a radially outer wall of the pump chamber has the advantage that this wall can thus be designed to be closed, for example made of metal with external heating conductors.
  • the arrangement of the additional outlet in an end surface of the pump chamber, which runs in a plane of one of the two top surfaces of the impeller, has the advantage that when pumping fluid with the direction of rotation of the impeller for pumping out of the additional outlet, the between the Fluid flowing out of both top surfaces of the impeller can flow relatively directly to the additional outlet. Since the additional outlet flap is close to the impeller in the fully open position, in particular in the radial direction, for example with a maximum radial distance of 1 cm, fluid can also be pumped out to the additional outlet as well as possible.
  • an aforementioned inside of the additional outlet flap is approximately at the axial height and radially outside the other top surface of the impeller, in such a way that fluid from the impeller is directed radially outward into the additional outlet flap and thus into the additive -Outlet flows.
  • a type of flow channel for the fluid is thus formed between the end surface of the pump chamber in which the additional outlet flap is provided and the additional outlet flap itself or its previously described inside. These two surfaces can then roughly coincide with the plane in which the aforementioned top surfaces of the impeller run, so that fluid can be pumped out of the additional outlet as well as possible.
  • the additional outlet can lead out of the pump chamber in the radial direction or in a plane perpendicular to an axis of rotation of the impeller.
  • the additional outlet then advantageously also leads out of an entire housing of the impeller pump, for example on a pipe socket which is well suited for connecting water lines or hoses, in particular elastic hoses.
  • the additional outlet flap is held down by the pumped fluid during the main direction of rotation of the impeller and thus held in the closed position so that the additional outlet is closed, preferably only by the pumped fluid.
  • the aforementioned actuating means presses the additional outlet flap from the closed position during the pumping of the fluid into an open position.
  • the actuating means can advantageously try to push the additional outlet flap into the open position, which is open to the maximum extent, but this does not have to be the case.
  • the opening of the additional outlet flap with a small opening path can be regarded as sufficient, namely if the fluid moved by the impeller in the other direction of rotation opens the additional outlet flap completely or pushes it open into the maximally wide open position.
  • the spring means can therefore ensure a certain, relatively slightly open, open position. The complete opening of the additional outlet flap is then brought about by the flow of the fluid in the pumping direction for pumping out of the pump.
  • an impeller pump according to the invention is shown as a pump 11 in an oblique view, as it is technically and structurally largely a pump corresponding to the aforementioned DE 102013211180 A1 is equivalent to.
  • the pump 11 has a pump housing 12 including an axial inlet 14 and a radial outlet 16.
  • a drive part 18 is connected, which in particular contains a drive motor.
  • an additional outlet 37 is provided at the front of the pump housing 12 directly next to the inlet 14. Its direction of extension is approximately parallel to that of the outlet 16, but this does not have to be the case.
  • the additional outlet 37 is a short pipe, at the end of which different connection options for further lines such as pipes or hoses can be provided. This does not need to be explained further to the person skilled in the art.
  • FIG. 2 A view into a pump chamber 22 is shown from the viewing direction of the distant drive part 18.
  • the additional outlet 37 from the pump chamber 22 can be seen on the left-hand side.
  • a chamber wall 24 is shown as a circumferential and closed ring, advantageous Made of metal with external heating conductors or heating elements. This is also known in the aforementioned prior art.
  • Guide vanes 25 are shown within the chamber wall 24. These are attached or molded on the outside of a drive receptacle 27, into which in particular an aforementioned drive motor can protrude.
  • the impeller and also the additional outlet are provided below the drive receptacle 27 in the plane of the drawing.
  • the structure from the can be seen more precisely Fig. 3 with the partially cut oblique representation.
  • the drive receptacle 27 is also here Fig. 2 removed, and it can be clearly seen that a circumferential bottom surface 29 is provided within the lower or front end of the chamber wall 24.
  • This bottom surface 29 runs largely in one plane or is flat and can be approximately at right angles to the chamber wall 24, but of course it does not have to be.
  • the ring-shaped bottom surface 29 surrounds, so to speak, an impeller 30 or, as will be explained in more detail below, is arranged slightly sunk in a central recess in the bottom surface 29.
  • the impeller 30 has a bottom disk 32 and a cover disk 33 as top surfaces. Later in the Fig. 8 it can be seen that this bottom disk 32 runs largely sunk in the bottom surface 29, so that its upper side only protrudes slightly above the plane of the bottom surface 29. Five curved impeller blades 35 run between the bottom disk 32 and the cover disk 33.
  • the impeller 30 rotates to the right or clockwise in the conveying direction FR shown with a thick arrow.
  • the conveyed fluid or water then rotates in this direction within the chamber wall 24 or circulates and can optionally be heated. It then exits the pump chamber 22 again in a tangential direction at an end region remote from the bottom surface 29, specifically through the outlet 16.
  • the additional outlet 37 can lead to a sewer pipe or a sewer hose from a water-carrying household appliance in which the pump 11 is installed, and from there to a drain or a drain pipe in the house.
  • the additional outlet opening 39 has an elongated shape and is curved. Its curvature corresponds exactly to the course of the impeller 30 radially inside it and the chamber wall 24 radially outside it, so its longitudinal edges are, so to speak, parallel to both. Their length is about three to four times as great as their width.
  • the additional outlet opening 39 has two axle bearing depressions 40. These serve for the articulated mounting of the flap.
  • a step edge 42 is provided along the radially inner edge or the radially inner longitudinal side. This need not be provided on the radially outer edge. The transition from the additional outlet opening 39 to the additional outlet connection 37 underneath is not shown exactly, but should be optimally shaped in terms of fluid technology.
  • the additional outlet opening 39 is closed by means of an additional outlet flap 44.
  • the additional outlet flap 44 closes the additional outlet opening 39 very well fitting or closes it, so that only a thin edge is visible. Furthermore, this connection is actually already sufficiently tight.
  • the step edge 42 is provided as an additional sealing means or as a kind of simple labyrinth seal, as mentioned at the beginning.
  • an elastic sealing material or a sealing rubber could very well be provided, for example also by injection molding.
  • such a separate seal made of elastic material or conventional sealing material could also be provided on a corresponding edge or side of a flap.
  • the additional outlet flap 44 itself could also consist of such an elastic material as a seal and thus itself effect the sealing function.
  • the additional outlet flap 44 has an outer side 45 which is a continuation of the surfaces of the pump chamber 22 that surround it. Since the additional outlet opening 39 lies completely within the planar annular bottom surface 29, this outer side 45 is also planar and does not protrude beyond this bottom surface 29. Since the chamber wall 24 is a separate component of its own here and consists in particular of metal because of the heat conductors attached to the outside, integration of the additional outlet flap 44 into the throat or the transition area between the bottom surface 29 and the chamber wall 24 is not possible. Theoretically, however, this would be conceivable and also easily feasible in and of itself.
  • the additional outlet flap 44 is mounted on the additional outlet opening 39 by means of two molded short stub axles 48 which are located in the axle bearing depressions 40. Under certain circumstances, they can be held therein by latching means, for example by more than 180 ° circumferential axle bearing recesses, so that they do not jump out by themselves and the additional outlet flap 44 is possibly lost.
  • the additional outlet flap 44 is shown in detail, on the one hand from the front and above and on the other hand from the side and above. It can be seen that the additional outlet flap has an inner side 46 opposite the outer side 45.
  • the two aforementioned stub axles 48 are integrally formed at the rear end.
  • a lateral wall 50 is provided on the outside and is connected in one piece to the flat flap or manufactured in one piece. This curved lateral wall 50 has an inner surface 51 and an outer surface 52. It should be noted that the lateral wall 50 is at an angle ⁇ of approximately 80 ° to the outer surface 52. As follows from the Fig.
  • this lateral wall 52 is it is mainly to capture the fluid emerging from the impeller 30 in the radial direction or with a large radial directional component, so to speak, and to divert it downward into the additional outlet opening 39, as in FIG Fig. 7 shows.
  • an optionally provided projection 54 is shown in dashed lines. This can reach under a front edge of the additional outlet opening 39 when swiveling open or when swiveling the additional outlet flap 44 upwards, that is to say towards the maximally wide open open position. By striking this projection 54 below the bottom surface 29, this open position, which is open to the greatest possible extent, can be defined or reached. Since the projection 54 is not arranged within the direct fluid flow, it also does not interfere with the flow. Furthermore, the lateral wall 50 is always within the additional outlet opening 39 for a good introduction of the fluid into it.
  • adjusting means for opening the additional outlet flap 44 with pivoting about the axis of rotation through the stub axle 48
  • different spring means could be provided, for example known torsion springs in the manner of a helical spring with one or two turns and very long free legs. These could on the one hand be supported on the inside 46 and on the other hand below the additional outlet opening 39.
  • a block-shaped body of resilient plastic or foam mentioned at the beginning could be provided on the left edge of the additional outlet flap 44, for example in the area towards the step edge 42. This could also be provided on the lower edge of the lateral wall 50, where it is in the closed position according to FIG Fig. 4 runs.
  • the additional outlet flap 44 is only opened slightly is, for example, a few degrees of rotation angle or a few millimeters at the front end, opposite the end with the stub axles 48.
  • the fluid flow then circulates in the direction of rotation ER, it can, so to speak, reach under the slightly opened additional outlet flap 44 and tear it open or push it open completely .
  • FIG. 7 and 8th shows the maximally wide open open position of the additional outlet flap 44. It can be seen that it is open so wide that the inside 46 is even a little above the plane of the underside of the cover disk 33, whereby the impeller 30 in FIG fluid conveyed or thrown out in the radial direction or at least in a partially radial direction is thrown in this area directly against this inner side 46 and the inner surface 51 of the lateral wall 50. In this way, fluid is captured particularly well in this area and conveyed through the additional outlet opening 39 to the additional outlet connection 37, that is to say out of the pump 11.
  • Fig. 8 it can also be seen that the radial distance between the additional outlet flap 44 or its lateral wall 5 including the outer surface 52 is quite large here.
  • the fluid forced outwards by centrifugal force due to the circulation in the pump chamber 22 could also relatively frequently run past the additional outlet flap 44 during emptying, which would make complete emptying somewhat more difficult.
  • a certain spacing of the bottom surface 29 in the radial direction is necessary and therefore no widening or relocation of the additional outlet flap 44 further outwards to the chamber wall 24 is possible. In other designs of pumps according to the invention, however, this is possible and could then also be provided.
  • ⁇ approx. 80 °.
  • a rounding or a groove could be provided. This could have advantages in terms of flow technology, but does not have to be so.
  • the distance in the radial direction between the impeller 30 and the additional outlet flap 44 or its rounded, radial inner edge is like that Fig. 4 and 7th show relatively low. It is, for example, 1 mm to 3 mm, precisely enough that sufficient stability of the bottom surface 29 is also ensured in this area.
  • an additional outlet flap 144 shown in a simplified manner, is arranged in a pump chamber 122 or within the bottom surface 129.
  • the additional outlet flap 144 is rotatably mounted at the left end by means of a corresponding axle stub 148 in an axle bearing recess 140.
  • the additional outlet flap 144 which is designed to be flat here, has an outer side 145 which is advantageously flat and smooth, as in the previous exemplary embodiment, in order to offer little water resistance.
  • a spring receptacle 156 is provided on an inner side 146, which has, for example, 50% of the width of the additional outlet flap 144 and is arranged centrally.
  • the spring receptacle 156 has a wide and flat slot which is open at least at the lower end and into which a leaf spring 159 is inserted as an adjusting means according to the invention with an upper spring end 158.
  • This upper spring end 158 which is shown in dashed lines here, could have one or more punched-out prongs or elevations by which it is held in place after being inserted into the spring receptacle 156 and can no longer be pulled out or does not come out by itself .
  • the leaf spring 159 is advantageously made of a stainless steel or spring steel with, for example, about a third of the width of the additional outlet flap 144. Alternatively, it can be made of plastic. Their spring force can be relatively small. In a central area it is slightly curved, and with a lower spring end 160, which is bent again somewhat more strongly at the very end, the leaf spring 159 rests against a wall of the additional outlet opening 139 or is supported against it.
  • leaf spring 159 It is not a significant problem to design the spring force of the leaf spring 159 accordingly.
  • a correspondingly thin material can be provided for the leaf spring 159; alternatively, lateral incisions or the like can also be used. be provided.
  • Fastening the leaf spring 159 is considered to be advantageous, particularly advantageous by inserting it into the spring receptacle 156 at the top.
  • it could also be attached to the left inner wall of the additional outlet opening 139, for example with a similarly designed spring receptacle, and then be supported with a free end on the inside 146 of the additional outlet flap 144 and possibly slide along it a little.
  • a helical spring made of spring wire with long protruding legs could be arranged around an axis corresponding to the stub shafts 148, which presses open the additional outlet flap 144 and is supported on the same inner wall of the additional outlet opening 139. Then just such a spring, the type of which is basically known, would be fastened to these stub axles or a corresponding axis of rotation for pressing open or closed by means of torque.
  • FIG. 10 Yet another embodiment is in the Fig. 10 shown, in which an additional outlet flap 244 is not rotatably mounted about a defined axis of rotation by means of stub axles, but is arranged in a receptacle 241 by means of a rectangular bearing end 249.
  • the receptacle 241 has a corresponding shape and is designed in principle similar to the axle bearing recesses 40 and 140, only with a flat cross-section.
  • the angular bearing end 249 sits in the receptacle 241 so that it is non-rotatable, and the additional outlet flap 244 itself is so soft or elastic or consists of such an elastic material that it itself forms the actuating means through which it is opened, i.e.
  • the upper solid representation in Fig. 10 shows the additional outlet flap 244 in one Open position with fluid flow with the direction of rotation ER as in Fig. 9 above. It can be clearly seen that a sufficiently large inlet for the fluid into the additional outlet opening 239 is possible here.
  • the additional outlet flap 244 can therefore itself have and fulfill a sealing function through a suitable choice of material, because it and especially its free end is flexible and can cling to the edge of the additional outlet opening 239 Providing a seal, in particular a seal made of a different material, closes the additional outlet or the additional outlet opening 239. A stepped edge does not even need to be provided so that the additional outlet flap 244 disappears flush and seals off better, but the additional outlet flap 244 can rest around the additional outlet opening 239 on the bottom surface 229.
  • FIG. 10 Shown in dashed lines in the Fig. 10 at the top is a position into which the additional outlet flap 244 moves independently by its own spring force when there is no fluid flow at all. It can be seen from this that the additional outlet flap 244 opens here only a relatively small amount due to its own spring force, that is to say, as it were, as its own actuating means. The further opening into the open position shown in solid lines then takes place precisely through the fluid flow with the direction of rotation ER, which presses it open a little further or bends it open a little further.
  • a relatively rigid additional outlet flap have an angular bearing end, which is partially resiliently encased and then so to speak in the receptacle against this Spring elasticity rotates.
  • an angular bearing end can be surrounded by a layer of relatively soft plastic or foam and can be rotated against its resilience into the closed position by a relatively strong fluid flow in the direction of rotation FR. If this fluid flow stops, the resilient plastic can press open the additional outlet flap 244.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Water Supply & Treatment (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (12)

  1. Pompe à impulseur (11) comprenant
    - une chambre de pompe (22, 122, 222) avec une entrée (14) dans la chambre de pompe et avec une sortie (16) de la chambre de pompe,
    - un impulseur (30) dans la chambre de pompe (22, 122, 222), l'impulseur présentant une direction de rotation (FR) pour pomper fluide de l'entrée (14) vers la sortie (16) et la chambre de pompe (22) étant de forme annulaire autour de l'impulseur (30),
    - une sortie supplémentaire (37) de la chambre de pompe avec un volet de sortie supplémentaire (44, 144, 244),
    le volet de sortie supplémentaire (44, 144, 244) :
    - présentant une position fermée et au moins une position d'ouverture,
    - étant déplaçable entre la position fermée et l'au moins une position d'ouverture,
    - dans la position fermée ferme la sortie supplémentaire (37) et dans chacune des positions d'ouverture débloque ou ouvre la sortie supplémentaire au moins partiellement,
    - présentant un moyen de réglage (159, 244) et étant soumis à une application de force par le moyen de réglage de telle manière que le volet de sortie supplémentaire (44, 144, 244) se bouge automatiquement de la position fermée vers une des positions d'ouverture si le volet de sortie supplémentaire est dégagé d'écoulement de fluide dans la direction de rotation (FR) de l'impulseur pour pomper fluide de l'entrée (14) vers la sortie (16),
    - dans la position fermée poursuivit le cours de la chambre de pompe (22) ou d'une paroi (24, 29, 129, 229) de la chambre de pompe dans la région autour de la sortie supplémentaire (37) en continu et en constance,
    - présentant un côté intérieur (46, 146, 246) orienté vers la sortie supplémentaire (37) dans la position fermée,
    caractérisée en ce que
    - la sortie supplémentaire (37) est disposée dans une face extrême (29, 129, 229) de la chambre de pompe dans la direction axiale le long d'un axe de rotation de l'impulseur (30), la face extrême étant une face de fond (29, 129, 229) ou une face de couvercle de la chambre de pompe (22),
    - un côté extérieur (45, 145, 245) opposé au côté intérieur (46, 146, 246) du volet de sortie supplémentaire (44, 144, 244) dans la position fermée s'étend en continu dans ladite face extrême (29, 129, 229),
    - l'impulseur (30) présente deux faces de couverture (32, 33), et la face extrême (29, 129, 229) avec la sortie supplémentaire (37) s'étend approximativement dans un plan d'une desdites faces de couverture (32),
    - le volet de sortie supplémentaire (44, 144, 244) dans une position d'ouverture d'un degré maximal d'ouverture se situe proche de l'impulseur (30), et le côté intérieur du volet de sortie supplémentaire (44, 144, 244) est au moins à une hauteur axiale et radialement à l'extérieur de l'autre face de couverture (33) de l'impulseur (30) de telle manière que fluide coule de l'impulseur (30) directement dans la direction radiale vers l'extérieur dans le volet de sortie supplémentaire (44, 144, 244) et la sortie supplémentaire (37).
  2. Pompe à impulseur selon la revendication 1, caractérisée en ce que le volet de sortie supplémentaire (44, 144, 244) est déplacé par les moyens de réglage (159, 244) dans cette position d'ouverture des plusieurs positions d'ouverture qui est ouverte d'un degré maximal d'ouverture et/ou la position avec le volet de sortie supplémentaire éloigné d'un degré maximal de la position fermée.
  3. Pompe à impulseur selon la revendication 1 ou 2, caractérisée en ce que la pompe présente des moyens de ressort (159, 244) en tant que moyen de réglage pour l'application de force sur le volet de sortie supplémentaire (44, 144, 244) pour le déplacement.
  4. Pompe à impulseur selon la revendication 3, caractérisée en ce que le moyen de ressort (244) présente un corps de bloc volumineux.
  5. Pompe à impulseur selon la revendication 3, caractérisée en ce que le moyen de ressort est sous forme d'un ressort à lame (159), ressort hélicoïdal, ressort en spirale ou ressort hélicoïdal en spirale.
  6. Pompe à impulseur selon l'une quelconque des revendications précédentes, caractérisée en ce que la pompe (11) présente des moyens d'étanchéité (42) sur la sortie supplémentaire (37), lesdites moyens d'étanchéité entourant la sortie supplémentaire.
  7. Pompe à impulseur selon la revendication 6, caractérisée en ce que les moyens d'étanchéité sont sous forme de joint labyrinthe (42) présentant un cours dégradé d'une surface d'étanchéité entre la sortie supplémentaire (37) et le volet de sortie supplémentaire (44).
  8. Pompe à impulseur selon l'une quelconque des revendications précédentes, caractérisée en ce que le volet de sortie supplémentaire (44, 144, 244) dans la position fermée poursuivit le cours de la chambre de pompe (22) ou d'une paroi (24, 29, 129, 229) de la chambre de pompe dans la région autour de la sortie supplémentaire (37) en continu et en constance avec des rondeurs et/ou courbures correspondant à la région de la chambre de pompe entourant la sortie supplémentaire.
  9. Pompe à impulseur selon l'une quelconque des revendications précédentes, caractérisée en ce que le côté intérieur (46, 146, 246) du volet de sortie supplémentaire (44, 144, 244) présente une paroi latérale (50) à un angle comprise entre 60° et 120° par rapport au côté extérieur (45, 145, 245) opposé au côté intérieur et s'étendant en direction vers la sortie supplémentaire (37) ou dans la sortie supplémentaire loin de la chambre de pompe (22), la paroi latérale (50) encore faisant saillie dans la sortie supplémentaire (37) au moins partiellement dans la position d'ouverture ouverte d'un degré maximal d'ouverture.
  10. Pompe à impulseur selon la revendication 9, caractérisée en ce que la paroi latérale (50) s'étend en parallèle à une paroi extérieur (24) circonférentielle de la chambre de pompe (22).
  11. Pompe à impulseur selon la revendication 9 ou 10, caractérisée en ce que la paroi latérale (50) dans la position d'ouverture ouverte d'un degré maximal d'ouverture s'étend à distance d'une paroi extérieur (24) circonférentielle de la chambre de pompe (22) comprise entre 0,5 cm et 2 cm.
  12. Pompe à impulseur selon l'une quelconque des revendications précédentes, caractérisée en ce que la sortie supplémentaire (37) débouche de la chambre de pompe (22) dans la direction radiale ou dans un plan perpendiculaire à un axe de rotation de l'impulseur (30).
EP18207152.2A 2017-12-01 2018-11-20 Pompe à impulseur Active EP3492752B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL18207152T PL3492752T3 (pl) 2017-12-01 2018-11-20 Pompa wirowa

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017221732.4A DE102017221732A1 (de) 2017-12-01 2017-12-01 Impellerpumpe

Publications (2)

Publication Number Publication Date
EP3492752A1 EP3492752A1 (fr) 2019-06-05
EP3492752B1 true EP3492752B1 (fr) 2021-11-17

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US (1) US10808705B2 (fr)
EP (1) EP3492752B1 (fr)
JP (1) JP7174606B2 (fr)
KR (1) KR102662457B1 (fr)
CN (1) CN109869349B (fr)
DE (1) DE102017221732A1 (fr)
PL (1) PL3492752T3 (fr)

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Publication number Priority date Publication date Assignee Title
DE102019206203A1 (de) * 2019-04-30 2020-11-05 E.G.O. Elektro-Gerätebau GmbH Wasserführendes Haushaltsgerät
KR102419681B1 (ko) 2019-09-02 2022-07-08 광운대학교 산학협력단 가변 정전 용량형 가중치 메모리 소자와 가중치 메모리 시스템 및 그 동작 방법
KR102405226B1 (ko) 2019-12-30 2022-06-02 광운대학교 산학협력단 가변 정전 용량형 가중치 메모리 소자와 가중치 메모리 시스템 및 그 동작 방법

Citations (1)

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Publication number Priority date Publication date Assignee Title
JPH10227297A (ja) * 1997-02-14 1998-08-25 Hitachi Ltd ポンプ

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DE302379C (fr) *
GB1200197A (en) * 1967-10-05 1970-07-29 Philips Electronic Associated Improvements in or relating to centrifugal pumps
US4753570A (en) * 1986-10-14 1988-06-28 Whirlpool Corporation Bidirectional pump with diaphragm operated valve for dishwasher
JPH0747088Y2 (ja) * 1988-02-15 1995-11-01 船井電機株式会社 食器洗浄器
US4923366A (en) * 1989-02-01 1990-05-08 General Electric Company Reversible turbine pump
FR2655599B1 (fr) * 1989-12-07 1992-02-14 Peugeot Dispositif d'alimentation des lave-vitres et des lave-projecteurs d'un vehicule automobile.
JPH06249179A (ja) * 1993-02-22 1994-09-06 Ouken Seiko Kk インペラーポンプ
DE4418153A1 (de) * 1994-05-25 1995-11-30 Wilo Gmbh Kreiselpumpe
DE19932859C2 (de) * 1998-10-01 2001-02-15 Tuchenhagen Gmbh Aseptisches Pumpengehäuse mit schaltbarer Drainage
JP4302955B2 (ja) * 2002-09-25 2009-07-29 日本電産シバウラ株式会社 ポンプ及び洗濯機
DE102007017271A1 (de) 2007-04-12 2008-10-16 BSH Bosch und Siemens Hausgeräte GmbH Pumpe mit Heizeinrichtung
JP5316239B2 (ja) * 2009-06-08 2013-10-16 日本電産株式会社 ポンプ
DE102013211180A1 (de) 2013-06-14 2014-12-18 E.G.O. Elektro-Gerätebau GmbH Pumpe
EP3156659B1 (fr) * 2015-10-12 2020-09-16 Grundfos Holding A/S Pompe et système hydraulique

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JPH10227297A (ja) * 1997-02-14 1998-08-25 Hitachi Ltd ポンプ

Also Published As

Publication number Publication date
CN109869349A (zh) 2019-06-11
EP3492752A1 (fr) 2019-06-05
JP2019100343A (ja) 2019-06-24
PL3492752T3 (pl) 2022-04-04
JP7174606B2 (ja) 2022-11-17
CN109869349B (zh) 2021-10-15
US20190203725A1 (en) 2019-07-04
KR20190065146A (ko) 2019-06-11
KR102662457B1 (ko) 2024-04-30
US10808705B2 (en) 2020-10-20
DE102017221732A1 (de) 2019-06-06

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