EP3492752A1 - Pompe à impulseur - Google Patents

Pompe à impulseur Download PDF

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Publication number
EP3492752A1
EP3492752A1 EP18207152.2A EP18207152A EP3492752A1 EP 3492752 A1 EP3492752 A1 EP 3492752A1 EP 18207152 A EP18207152 A EP 18207152A EP 3492752 A1 EP3492752 A1 EP 3492752A1
Authority
EP
European Patent Office
Prior art keywords
additional outlet
impeller
flap
pump chamber
additional
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP18207152.2A
Other languages
German (de)
English (en)
Other versions
EP3492752B1 (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
    • 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
    • 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
    • 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
    • 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 used in particular in a water-conducting household appliance such as a washing machine or a dishwasher.
  • the invention has for its object to provide an impeller pump mentioned above, can be solved with the problems of the prior art and it is particularly possible to pump water from a household appliance, in which the impeller pump is installed, as simple as possible and at the same time as efficiently as possible to be able to empty the pump chamber.
  • the impeller pump has a pumping chamber at or in which an inlet into the pumping chamber and an outlet from the pumping chamber are provided.
  • an impeller rotates, 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, blades of the impeller being particularly preferably shaped or bent, that in this direction of rotation of the impeller, they can convey the fluid from the inlet to the outlet in a particularly efficient manner.
  • an additional outlet from the pump chamber is provided together with 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 rotatable, alternatively bendable. Preferably, it is rotatable about an axis, so it is rotatably mounted and not only elastically movable and deflectable formed, 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 about as large as the additional outlet, advantageously be slightly larger.
  • the additional outlet is at least partially open or the additional outlet flap releases it at least partially or opens it. Depending on the open position, the additional outlet may therefore be more or less open.
  • an adjusting means is provided, whereby the additional outlet flap is so loaded that it is automatically moved from the closed position to one of the open positions, if no fluid or water is pumped from the inlet to the outlet or if the additional Outlet flap is free of fluid flow in the direction of rotation of the impeller for pumping the fluid during normal operation.
  • the adjusting means can thus bring the additional outlet flap at least in the first open position or in the least open open position. Under certain circumstances, it may therefore be sufficient if the adjusting means open the additional outlet flap only a little bit.
  • the additional outlet flap including adjusting means which are advantageously passive actuating means, with the automatic opening can be dispensed with specially actuated actuators such as electromagnets, piezo drives or electric motors. This considerably simplifies the design of the impeller pump and its operation. Furthermore, space can be saved.
  • the additional outlet flap can be moved by the adjusting means in that open position from the group of several open positions, which is at most wide open and / or in which they are at most far from the closed Position is removed. This can be achieved that the additional outlet flap has the closed position. Starting at this closed position, a movement can be provided for opening in which the additional outlet flap is initially opened slightly, for example after a rotation of only a few degrees arc angle. However, the actuating means attempts to open the additional outlet flap even further, in particular to open it to a maximum extent. Then as much fluid or water to the additional outlet can be pumped from the pump chamber even with a reversal of the direction of rotation of the impeller.
  • this maximum wide open position may apply that this has the additional outlet flap rotated by an angle of 10 ° to 45 °, preferably 15 ° to 30 °. If the fluid flows in the opposite main direction of rotation of the impeller, ie if its direction of rotation is reversed, toward the open additional outlet flap and through the additional outlet, a particularly high efficiency can be achieved through the additional outlet flap. So it not only closes the additional outlet in the closed position, but in the open positions, in particular in the maximum wide open position, directs the fluid in the reverse direction of rotation of the impeller as well as possible in the additional outlet.
  • the adjusting means are resilient or have spring means as adjusting means to load the additional outlet flap with force so that it moves out of the closed position.
  • the spring means should be installed so that they impede fluid flow as little as possible.
  • spring means on the one hand advantageously plastic spring means can be used. These have the advantage that they do not corrode on permanent contact with water.
  • Such spring means may advantageously have a bulky block body, which may have a particularly advantageous cylindrical shape.
  • the spring means may for example have the shape of a cuboid and consist of elastic material, in particular just plastic.
  • the plastic here is silicone, possibly rubber.
  • a conventional spring can be used, so for example a leaf spring, a coil spring, a coil spring or a combined helical coil spring.
  • a spring may also be wound around a rotation axis and build up a torque by twisting or twisting, which then just tries to open the additional outlet flap.
  • the additional outlet flap itself may be soft or elastic or consist of such elastic material, in particular an elastomer, that it itself forms the actuating means or the spring means by which it is opened. Then, so to speak, the spring or the spring action is integrated into the additional outlet flap. It can be easily opened in a normal position without fluid flow, so be in a relatively low open open position. Depending on the flow direction, it is then pressed further or pushed or pushed into the closed position, thus closing the additional outlet.
  • the pump may have sealing means on the additional outlet and / or on the additional outlet flap.
  • these are circumferentially formed around the additional outlet, but at least along one side, for example, close to the impeller.
  • the additional outlet flap can be kept relatively simple. It may be provided to inject a sealant to the pump housing, for which a multi-component injection molding method is particularly advantageous. This is especially advantageous if the sealant a type of sealing lip, round cord seal or the like. is.
  • the sealing means can also have a sealing rubber, which ensures by its elasticity for 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 sufficiently seals by its soft material.
  • a labyrinth seal can also be provided between the additional outlet flap and the edge of the additional outlet at or near which the flap extends.
  • a labyrinth seal may have a stepped course of a sealing surface between additional outlet and additional outlet flap, for example with one to three angle steps. Then perhaps a sealing effect is not quite as good as with an elastic rubber seal, but it is sufficient for the operation of the impeller pump.
  • 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. So it should also as little as possible or at best no additional flow resistance represent when the impeller pumping fluid from the inlet to the outlet of the pump chamber. Then it is so advantageous, so to speak, not available.
  • the additional outlet flap in the closed position as continuously as possible continues the course of the pump chamber or a wall of the pump chamber in this area around the flap, in particular continues exactly continuously.
  • the progression of the pump chamber or the wall of the pump chamber should be continued continuously, wherein in particular also curves and / or bulges corresponding to the area surrounding the additional outlet region of the pump chamber determine the configuration of the additional outlet flap at least on the outside thereof. If the surrounding area of the pump chamber is flat, then the outlet flap can also 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 exist.
  • the additional outlet flap has an inner side which, in the closed position, points towards the additional outlet or points into the additional outlet. It thus points away from the pump chamber, while the aforementioned outside of the additional outlet flap, especially in the closed position, obscures the additional outlet or the area at which the fluid flows along and flows past from the inlet to the outlet during pumping.
  • the inside can advantageously be convexly curved, convexly curved away from the additional outlet or towards the pump chamber. This special form is intended to ensure that, in the open position of the additional outlet flap or the maximum wide open position, the fluid which flows through the opened additional outlet flap into the additional outlet in the reverse direction of rotation of the impeller , flows into the additional outlet as quickly and efficiently as possible. Due to this curvature, the pumped fluid should therefore be captured as well as possible and directed into the additional outlet.
  • a lateral wall can 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 largely flat, this angle can also be between 80 ° and 100 °. It can be particularly advantageous 90 ° or slightly less.
  • lateral wall is never completely moved out of the opening of the additional outlet during operation of the pump.
  • a stop can be provided, advantageously on the lateral wall itself, which can abut against an inner edge of the additional outlet.
  • the lateral wall may have a longitudinal outer edge, which in the maximum wide open position over a majority of its length in a Direction away from the axis of rotation of the additional outlet flap, in particular over its entire length, extends within the additional outlet.
  • a projection or the like. be provided for the aforementioned stop, in particular at said free longitudinal outer edge of the lateral wall, particularly preferably as far away 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 lateral wall runs parallel to a circumferential outer wall of the pump chamber.
  • the lateral wall can therefore also be bent 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, which is between 0.5 cm and 2 cm. This means that the lateral wall can have a relatively small distance to the outer wall of the pump chamber, but this distance is still given. This is particularly advantageous when the impeller pump has a heated outer wall of the pump chamber.
  • the additional outlet flap must still be integrated in the existing space in the pump chamber.
  • the pump chamber extends annularly around the impeller.
  • the additional outlet can be arranged in an annular end face of the pump chamber in the axial direction along the axis of rotation of the impeller. This may be a bottom surface or a top surface of the pump chamber. Such an end surface is advantageously arranged such that it extends approximately in a plane of one of the two top surfaces of the impeller. Particularly advantageous can be provided that this end face away from the Outlet from the pump chamber is, see the 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 said end surfaces of the pump chamber and not on a radially outer wall of the pump chamber has the advantage that thus this wall can be formed closed, for example, metal with external heating conductors.
  • the arrangement of the additional outlet in an end surface of the pump chamber, which extends 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 that between the Both upper surfaces of the impeller flowing out fluid can flow relatively directly to the additional outlet. If it is then provided that the additional outlet flap in the maximum wide open position is close to the impeller, in particular in the radial direction, for example with a maximum of 1 cm radial distance, so fluid can be pumped out as well as possible to the additional outlet.
  • an aforementioned inner side 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 directly in the radial direction outward into the additive Outlet flap and thus flows into the additional outlet.
  • the additional outlet can lead out in an embodiment of the invention from the pump chamber in the radial direction or in a plane perpendicular to a rotational axis of the impeller.
  • the additional outlet then also leads out of an entire housing of the impeller pump, for example on a pipe socket which is well suited for connecting water pipes 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 kept in the closed position, so that the additional outlet is closed, preferably only by the pumped fluid.
  • the aforesaid actuating means pushes the additional outlet flap from the closed position during the pumping of the fluid in an open position.
  • the adjusting means try to push the additional outlet flap in the maximum wide open position, but this need not be.
  • the opening of the additional outlet flap with a small opening stroke can be regarded as sufficient, if namely then the fluid moved by the impeller in the other direction completely opens the additional outlet flap or presses it into the maximum wide open position.
  • the spring means can thus provide in this case for a certain, relatively low open-position.
  • the full opening of the auxiliary outlet flap is then effected 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 they are technically and structurally largely a pump according to the aforementioned DE 102013211180 A1 equivalent.
  • the pump 11 has a pump housing 12 together with the axial inlet 14 and the 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. Whose extension direction is approximately parallel to that of the outlet 16, but this need not be so.
  • the additional outlet 37 is a short tube, at the end of different connection options for other lines such as pipes or hoses can be provided. This need not be explained to the expert here.
  • Fig. 2 is a view into a pump chamber 22 shown in the viewing direction of the remote drive part 18 can be seen on the left side of the additional outlet 37 from the pump chamber 22.
  • a chamber wall 24 is shown as a round encircling and closed ring, advantageous made of metal with external heating conductors or heating elements. This too is known in the aforementioned prior art.
  • vanes 25 are shown within the chamber wall 24 . These are externally attached to or formed on a drive mount 27 into which, in particular, an aforementioned drive motor can protrude.
  • the impeller and also the additional outlet are provided below the drive mount 27 in the drawing plane inside.
  • a circumferential bottom surface 29 is provided within the lower and front end of the chamber wall 24, and it is good to see that within the lower and front end of the chamber wall 24, a circumferential bottom surface 29 is provided.
  • This bottom surface 29 extends largely in a plane or is flat and can be approximately at right angles to the chamber wall 24, but of course this does not have to.
  • the annular bottom surface 29 so to speak surrounds an impeller 30 or, as will be explained in more detail below, it 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 cover surfaces. Later in the Fig. 8 It can be seen that this bottom plate 32 largely recessed in the bottom surface 29 runs, so that their top only slightly beyond the plane of the bottom surface 29 protrudes. Between bottom plate 32 and cover plate 33 extend five curved impeller blades 35th
  • the impeller 30 rotates clockwise in the direction of conveyance FR indicated by a thick arrow.
  • the pumped fluid or water then rotates in this direction within the chamber wall 24 or runs around and can optionally be heated. It then exits the pump chamber 22 in a tangential direction at an end region remote from the bottom surface 29, namely through the outlet 16.
  • the impeller 30 is driven in the opposite direction, namely in the emptying direction ER, which is represented by a thin arrow, then fluid which can flow in through the inlet 14, if possible, is not conveyed out to the outlet 16. Rather, this fluid is then to be conveyed through an additional outlet opening 39 to the additional outlet 37 from the pump chamber 22 out.
  • the additional outlet 37 can lead to a sewer or a sewage hose from a water-conducting household appliance, in which the pump 11 is installed, and from there to a drain or a drain line in the house.
  • the additional outlet opening 39 has an elongate shape and is bent. Their bending corresponds exactly to the course of the impeller 30 radially inwardly therefrom and the chamber wall 24 radially outside thereof, so that their longitudinal edges are, so to speak, parallel to both. Their length is about three times to four times as large as their width.
  • the additional outlet opening 39 has two axlebox recesses 40. These serve for articulated storage of the flap.
  • a step edge 42 is provided along the radially inner edge or the radially inner longitudinal side. At the radially outer edge this does not need to be provided. The transition from the additional outlet port 39 to the additional outlet port 37 underneath is not shown exactly, but should be formed as optimally as possible fluid technology.
  • the additional outlet opening 39 is closed by means of an additional outlet flap 44.
  • the additional outlet flap 44 closes off the additional outlet opening 39 very suitably or closes it so that only a thin edge is visible. Furthermore, this connection is actually already sufficiently tight.
  • the radially inner region of the step edge 42 is provided as an additional sealant or as a kind of simple labyrinth seal, as mentioned above.
  • an elastic sealing material or a rubber seal for example, also molded.
  • 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 consist of such elastic material as a seal and thus even cause the sealing function.
  • the additional outlet flap 44 has an outer side 45, which is a continuation of the surrounding surfaces of the pump chamber 22. Since the additional outlet opening 39 is located completely within the planar annular bottom surface 29, this outer side 45 is likewise flat and does not project beyond this bottom surface 29. Since here the chamber wall 24 is a separate own component and in particular consists of metal because of the externally mounted heating element, an integration of the additional outlet flap 44 in the throat or the transition region between the bottom surface 29 and chamber wall 24 is not possible. Theoretically, this would be conceivable and easily executable.
  • the fluid emerging from the impeller 30 during the normal conveying of fluid in a rotating direction to the right flows via the additional outlet flap 44 so that this or its outside 45 is pressed down, whereby the additional outlet opening 39 is closed , While not necessarily completely watertight, this closure is particularly effective when fluid pressure is applied.
  • This is in normal operation for conveying fluid but also not necessary, since the fluid yes from the impeller 30 exiting in rotates clockwise round a few times within the pump chamber 22 until it exits to the outlet 16 again.
  • the additional outlet flap 44 is shown in detail, on the one hand from the front and above and on the other from the side and top. It can be seen that the additional outlet flap has an outer side 45 opposite inner side 46. At the rear end of the two aforementioned stub axles 48 are formed. On the outside of a lateral wall 50 is provided and integrally connected to the flat flap or made 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 about 80 ° to the outer surface 52. This indicates, as follows from the Fig.
  • this lateral wall 52 is It is mainly, so to speak capture the fluid emerging in the radial direction or with a large radial direction component from the impeller 30 and derive down into the additional outlet opening 39, as the Fig. 7 shows.
  • an optionally provided projection 54 can be seen in dashed lines. This can engage under a front edge of the additional outlet opening 39 when pivoting or when pivoting the additional outlet flap 44 upwards, ie to the maximum wide open position. By striking this projection 54 below the bottom surface 29, this maximum open wide open position can be defined or achieved. In this case, since the projection 54 is not arranged within the direct fluid flow, it does not interfere with the fluid flow. Furthermore, the lateral wall 50 is always within the auxiliary outlet port 39 for good introduction of the fluid therein.
  • inventive 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 coil spring with one or two revolutions and very long free legs. These could on the one hand be supported on the inner side 46 and on the other hand below the additional outlet opening 39.
  • an initially mentioned block-shaped body of resilient plastic or foam be provided at the left edge of the additional outlet flap 44, for example in the area towards the step edge 42.
  • this could be provided on the lower edge of the lateral wall 50, where these in the closed position according to Fig. 4 runs.
  • the additional outlet flap 44 only slightly open is, for example, a few degrees of rotation or a few millimeters at the front end, opposite the end with the stub axles 48. Then, when the fluid flow rotates in the direction of rotation ER, it can, so to speak, reach under the slightly open additional outlet flap 44 and tear or press them completely ,
  • ⁇ approximately 80 °.
  • a rounding or a throat could be provided. This could be aerodynamic advantages, but need not 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 the Fig. 4 and 7 show relatively low. It is, for example, 1 mm to 3 mm, and just as much that still sufficient stability of the bottom surface 29 is ensured in this area.
  • FIG. 9 is shown in one embodiment, as a simplified illustrated additional outlet flap 144 is disposed in a pump chamber 122 and within the bottom surface 129.
  • the additional outlet flap 144 is rotatably mounted at the left end by means of appropriate stub axle 148 in a Achslagervetiefung 140.
  • the here flat formed additional outlet flap 144 has an outer side 145, which is advantageously flat and smooth as in the previous embodiment to provide little water resistance.
  • a spring receptacle 156 is provided which, for example, has 50% of the width of the additional outlet flap 144 and is arranged centrically.
  • the spring receptacle 156 has a wide and flat slot which is open at least at the lower end and in which a leaf spring 159 is inserted as an inventive adjusting means with an upper spring end 158.
  • This upper spring end 158 which is shown here in dashed lines, could in known manner, one or more punched out spikes or elevations, by which it is held after insertion into the spring receptacle 156 and can not be pulled out or does not go out by itself ,
  • the leaf spring 159 is advantageously made of a stainless steel or spring steel with, for example, about one third of the width of the additional outlet flap 144. Alternatively, it may be made of plastic. Their spring force can be relatively low. In a central region, it is slightly bent, and with a lower spring end 160, which is slightly more bent at the very end, the leaf spring 159 abuts against a wall of the additional outlet opening 139 and is supported on the other hand.
  • leaf spring 159 it is not a significant problem to design the spring force of the leaf spring 159 accordingly.
  • correspondingly thin material for the leaf spring 159 may be provided, alternatively, lateral cuts or the like. be provided.
  • An attachment of the leaf spring 159 is considered advantageous, particularly advantageous just by plugging up in the spring receptacle 156.
  • it could also be attached to the left inner wall of the additional outlet opening 139, for example, with a similarly shaped spring receptacle, and then be supported with a free end on the inner side 146 of the additional outlet flap 144 and possibly slide along it slightly.
  • FIG. 10 Yet another embodiment is in the Fig. 10 represented in which an additional outlet flap 244 is non-rotatably mounted about a defined axis of rotation by means of stub axles, but by means of a rectangular shaped bearing end 249 is arranged in a receptacle 241.
  • the receptacle 241 has a corresponding shape and is in principle similar to the Achslagervetiefept 40 and 140, only just with angled cross-section.
  • the angular bearing end 249 sits so to speak rotationally in the receptacle 241, and the additional outlet flap 244 itself is so soft or elastic or consists of such elastic material that it itself forms the actuating means by which it is opened, so to speak, the spring or the spring effect is integrated in the flap.
  • the additional outlet flap 244 can therefore have a sealing function here even by suitable choice of material and fulfill, because they and especially their free end is flexible and can nestle, in particular to the edge of the additional outlet opening 239. So it can without additional attachment or Provide a seal, in particular a seal made of different material, the additional outlet or the additional outlet opening 239 close. It does not even have to be provided with a stepped edge, so that the additional outlet flap 244 disappears flush and better seals, but the additional outlet flap 244 can rest around the additional outlet opening 239 on the bottom surface 229.
  • Dashed lines in the Fig. 10 above is a position in which the auxiliary outlet flap 244 moves independently by its own spring force, if there is no fluid flow at all. From this it can be seen that here opens the additional outlet flap 244 by their own spring force, so to speak, as a separate actuating means, only a relatively small piece. The further opening in the open position shown in solid state is then just by the fluid flow with the direction of rotation ER, which pushes it a little further or bends a little further.
  • auxiliary outlet flap 244 in the closed position closes the additional outlet opening 239. This is not quite as smooth or flat as shown in the picture here Fig. 9 bottom, because the auxiliary outlet flap 244 has a slight curvature or bend. Finally, it is determined by the fluid flow with the direction of rotation FR from the in Fig. 10 Pressed down shown above dashed position. However, since an aforementioned spring force for opening the additional outlet flap 244 or for moving can be relatively small, which also applies to the other described embodiments of actuating means or spring means, this is technically easy to implement.
  • a relatively rigid formed additional outlet flap have a square bearing end, which is partially resiliently encased and then, so to speak, in the recording against this Spring elasticity turns.
  • a square-shaped bearing end can be surrounded by a layer of relatively soft plastic or foam and can be rotated against the spring elasticity in the closed position by a relatively strong fluid flow with the direction of rotation FR. If this fluid flow stops, the resilient plastic can press on the additional outlet flap 244.

Landscapes

  • 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)
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 true EP3492752A1 (fr) 2019-06-05
EP3492752B1 EP3492752B1 (fr) 2021-11-17

Family

ID=64402023

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18207152.2A Active EP3492752B1 (fr) 2017-12-01 2018-11-20 Pompe à impulseur

Country Status (7)

Country Link
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)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
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
JP7276099B2 (ja) * 2019-11-26 2023-05-18 株式会社鶴見製作所 無閉塞ポンプ
KR102405226B1 (ko) 2019-12-30 2022-06-02 광운대학교 산학협력단 가변 정전 용량형 가중치 메모리 소자와 가중치 메모리 시스템 및 그 동작 방법

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
FR2655599A1 (fr) * 1989-12-07 1991-06-14 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
DE102007017271A1 (de) 2007-04-12 2008-10-16 BSH Bosch und Siemens Hausgeräte GmbH Pumpe mit Heizeinrichtung
JP2010281310A (ja) * 2009-06-08 2010-12-16 Nidec Shibaura Corp ポンプ
DE102013211180A1 (de) 2013-06-14 2014-12-18 E.G.O. Elektro-Gerätebau GmbH Pumpe

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DE302379C (fr) *
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
DE4418153A1 (de) * 1994-05-25 1995-11-30 Wilo Gmbh Kreiselpumpe
JPH10227297A (ja) * 1997-02-14 1998-08-25 Hitachi Ltd ポンプ
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
EP3156659B1 (fr) * 2015-10-12 2020-09-16 Grundfos Holding A/S Pompe et système hydraulique

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
FR2655599A1 (fr) * 1989-12-07 1991-06-14 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
DE102007017271A1 (de) 2007-04-12 2008-10-16 BSH Bosch und Siemens Hausgeräte GmbH Pumpe mit Heizeinrichtung
JP2010281310A (ja) * 2009-06-08 2010-12-16 Nidec Shibaura Corp ポンプ
DE102013211180A1 (de) 2013-06-14 2014-12-18 E.G.O. Elektro-Gerätebau GmbH Pumpe

Also Published As

Publication number Publication date
JP7174606B2 (ja) 2022-11-17
KR20190065146A (ko) 2019-06-11
US20190203725A1 (en) 2019-07-04
KR102662457B1 (ko) 2024-04-30
PL3492752T3 (pl) 2022-04-04
US10808705B2 (en) 2020-10-20
CN109869349A (zh) 2019-06-11
EP3492752B1 (fr) 2021-11-17
DE102017221732A1 (de) 2019-06-06
CN109869349B (zh) 2021-10-15
JP2019100343A (ja) 2019-06-24

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