EP3755907B1 - Pompe à liquide de refroidissement pourvue d'un dispositif palier optimisé et à bilan thermique amélioré - Google Patents

Pompe à liquide de refroidissement pourvue d'un dispositif palier optimisé et à bilan thermique amélioré Download PDF

Info

Publication number
EP3755907B1
EP3755907B1 EP18808277.0A EP18808277A EP3755907B1 EP 3755907 B1 EP3755907 B1 EP 3755907B1 EP 18808277 A EP18808277 A EP 18808277A EP 3755907 B1 EP3755907 B1 EP 3755907B1
Authority
EP
European Patent Office
Prior art keywords
pump
shaft
coolant
chamber
bearing
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
EP18808277.0A
Other languages
German (de)
English (en)
Other versions
EP3755907A1 (fr
Inventor
Franz Pawellek
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.)
Nidec GPM GmbH
Original Assignee
Nidec GPM 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 Nidec GPM GmbH filed Critical Nidec GPM GmbH
Publication of EP3755907A1 publication Critical patent/EP3755907A1/fr
Application granted granted Critical
Publication of EP3755907B1 publication Critical patent/EP3755907B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • 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
    • F04D13/0673—Units comprising pumps and their driving means the pump being electrically driven the motor being of the inside-out type
    • 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
    • F04D13/0606—Canned motor pumps
    • F04D13/0633—Details of the bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F01P5/12—Pump-driving 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
    • F04D13/00—Pumping installations or systems
    • F04D13/12—Combinations of two or more 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
    • F04D29/02—Selection of particular materials
    • F04D29/026—Selection of particular materials 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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/043—Shafts
    • 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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • 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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • F04D29/047—Bearings hydrostatic; hydrodynamic
    • F04D29/0473—Bearings hydrostatic; hydrodynamic for radial 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
    • F04D29/06—Lubrication
    • F04D29/061—Lubrication 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
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/106—Shaft sealings especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F01P2005/105—Using two or more pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F01P5/12—Pump-driving arrangements
    • F01P2005/125—Driving auxiliary pumps electrically
    • 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
    • F05D2230/00—Manufacture
    • F05D2230/20—Manufacture essentially without removing material
    • F05D2230/22—Manufacture essentially without removing material by sintering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/50—Intrinsic material properties or characteristics
    • F05D2300/514—Porosity

Definitions

  • the present invention relates to an electric coolant pump, the structure of which is optimized by a combination of a bearing, seal and electric motor in terms of costs, installation space and service life for the field of application of an additional water pump, and which has a bearing arrangement optimized taking this field of application into account and an improved heat balance .
  • Such electric auxiliary water pumps are used to circulate sub-areas of a coolant-carrying thermal management system of a vehicle that is equipped with an internal combustion engine and a main water pump, in order to cool so-called hotspots on components of auxiliary devices, such as exhaust gas recirculation, a turbocharger, charge air cooling or the like, more flexibly . Due to the redundancy to the main water pump and the increased number of lines and junctions, there is high price pressure for this type of auxiliary water pump and high demands on a compact design with small dimensions for integration in a complex packaging of modern thermal management systems.
  • wet-running electric motors of the internal rotor type are used, among other things because of the simpler sealing in the relatively small pump structure.
  • the use of wet-running electric motors, on which the stator is typically dry-encapsulated from the rotor by a can or the like and the rotor and bearings are designed for operation in the pumped medium, is a known measure to solve the problem of a leak in a Counter shaft seal and a defect in a shaft bearing.
  • wet rotors have a poorer efficiency, since the gap between the stator and the rotor for accommodating a can is larger and a field strength acting on the rotor is weakened as a result.
  • fluid friction occurs on the rotor, as a result of which the efficiency further decreases, particularly in the case of the relatively small pump drives of auxiliary water pumps.
  • problems with wet rotors occur at low temperatures, such as ice formation in the gap between the stator and the rotor.
  • Dry-running electric motors are also used on larger pumps such as the electric main water pumps due to their better efficiency.
  • rolling element bearings such as ball bearings are mainly used, which absorb both axial and radial loads and achieve low coefficients of friction.
  • rolling element bearings are generally sensitive to the ingress of moisture, since the materials used, in particular suitable steels for rolling elements, are not sufficiently corrosion-resistant for use in moisture.
  • the ingress of moisture leads to a reduction in the surface quality of the rolling elements and raceways due to corrosion, which results in higher friction in the bearing and corresponding heat generation and further consequential damage to the bearings and seals.
  • the rolling element bearings in pumps which are expensive anyway, have to be provided with even more expensive seals on both end faces, which ensure low-friction and reliable sealing against the working pressures occurring in the pump chamber.
  • the bearing clearances in the plain bearing of the shaft are also set to be quite large in a range of 0.1 to 0.2 mm in order to prevent impurities (particles) in the pumped medium from causing jamming effects in the plain bearing and/or the damage the shaft seal. Due to radial displacements of the shaft, these increased bearing clearances also lead to increased noise emissions from the pump.
  • an object of the invention is a simple, inexpensive, durable and to create a compact pump structure for a glanded electric motor with improved noise emissions and improved cooling.
  • the electric coolant pump is characterized in particular by the fact that a radial bearing of the shaft is provided by means of a coolant-lubricated (not soaked or impregnated with lubricant) radial sintered plain bearing with a defined porosity, which is arranged between the pump impeller and the rotor, and that a shaft seal between the radial slide bearing and the motor chamber, wherein in the sintered slide bearing in the axial direction at least one coolant flow passage is provided with a predetermined depth from the end of the sintered slide bearing on the pump chamber side.
  • a coolant-lubricated not soaked or impregnated with lubricant
  • the invention in its most general form is based on the finding that the selection, combination and arrangement of the individual components of the pump according to the invention result in a simplified and long-lasting bearing of the shaft and effective heat dissipation from the plain bearing itself and from other elements arranged in the motor chamber, such as the electric motor, can be achieved in the pumping medium, which also provides the corresponding advantages of a constructive and economic nature for the task at hand.
  • the invention provides for the first time providing a coolant-lubricated, non-lubricant radial sintered plain bearing with a defined porosity and an axial coolant flow channel in an electric coolant pump.
  • a porous sintered bearing lubricated by the pumped medium is cost-effective on the one hand, since there is no need for a soaking process or subsequent soaking of the sintered bearing, and on the other hand the predetermined porosity of the sintered bearing in cooperation with the coolant flow channel enables a defined flow of coolant through the plain bearing and filtering of the Pumped medium through the plain bearing itself.
  • the axial Portion of the porous sintered plain bearing in which the coolant flow passage is not provided, as a filter element for the pumping medium and no separate filter element needs to be provided.
  • the defined flow of coolant allows heat to be better dissipated from the plain bearing itself and the elements of the pump connected to it, such as the stator or the control unit, and also the shaft seal, into the pumped medium, thus improving the heat balance of the coolant pump.
  • the use of the sintered plain bearing enables small bearing clearances to be set, since the thermal expansion of the sintered bearing and the shaft can be suitably adjusted with the appropriate material selection.
  • the coolant flow passage may extend in the axial direction from the end of the sintered plain bearing on the side of the pump chamber over about 90% of the component depth of the sintered plain bearing.
  • the conveyed medium can be distributed very quickly and evenly over the entire axial length of the porous sintered plain bearing and can penetrate into it, as a result of which the lubrication of the bearing point can be ensured.
  • the remaining axial end section of the porous sintered plain bearing that is not provided with the coolant flow channel on the side opposite to the pump chamber, which occupies about 10% of the component depth of the sintered plain bearing in the axial direction, can ensure sufficient filtering of the pumped medium.
  • this configuration allows the defined coolant flow to be set more reliably in the axial direction through the porous plain bearing and then through the bearing gap of the plain bearing back to the pump chamber.
  • the bearing play in the sintered plain bearing of the shaft can be set to less than 10 ⁇ m.
  • the porosity of the sintered plain bearing can be set to over 40%.
  • the conveyed medium can be distributed quickly and evenly in the porous sintered plain bearing, which ensures reliable lubrication of the plain bearing.
  • the flow of the pumped medium inside the plain bearing and thus the heat transport from the plain bearing to the pumped medium can be promoted.
  • the rotor can be designed in a pot shape, the inner surface of which faces the shaft seal and is fixed on the shaft in an axially overlapping manner with it.
  • liquid droplets from a leak behind the shaft seal are forced through the air gap of the dry rotor between the open field coils of the stator and the magnetic poles of the rotor by radial acceleration on the inner surface of the rotor before they can reach a motor chamber with electronics.
  • the leakage droplets are vaporized by the operating temperature of the electric motor and by turbulent turbulence in the air gap.
  • the resulting water vapor only then enters the motor chamber and escapes through a membrane into the atmosphere.
  • encapsulation of the stator and the associated disadvantages in terms of the efficiency of an electric motor of the wet-running type can be dispensed with.
  • an axial bearing of the shaft can be provided by an axial slide bearing, which is formed by a free end of the shaft and a contact surface on the pump housing, preferably a pump cover.
  • the pump impeller During operation, the pump impeller generates a thrust towards the suction port or inlet of the pump.
  • a particularly simple but sufficient axial bearing without the need for axial fixing in the opposite direction is provided by a sliding surface on the end face of the shaft and a corresponding contact surface on the housing. As a result, the construction and assembly can be further simplified.
  • the shaft seal can have at least two sealing lips for dynamic sealing on the shaft circumference, which are aligned at least on one axial side to provide a seal.
  • a double-lipped shaft seal provides cheap and adequate protection against leakage behind the axial plain bearing, which achieves a significantly better seal than mechanical seals and only allows a small accumulation of leakage drops to pass.
  • a seal in the opposite direction, as in a pump design with a dry roller bearing, can be omitted due to the wet-running plain bearing.
  • stator of the electric motor can be arranged in axial overlap with the at least one coolant flow channel.
  • a control unit can be provided, which is arranged in the motor chamber in the axial direction between the separating element and the stator.
  • control unit can be cooled by dissipating heat via the conveying medium flowing in the porous sintered plain bearing. Due to the spatial proximity between the control unit and the stator, the contacting or wiring between the control unit and the stator is also simplified and robust wiring can be provided.
  • the motor chamber may have an opening to the atmosphere which is closed by a liquid-tight and vapor-permeable pressure-equalizing membrane.
  • a pump housing 1 comprises, on a side shown on the right, an intake connection 16 and a pressure connection, not shown, which open into a pump chamber 10 .
  • the intake port 16 serves as a pump inlet, which is placed in the form of a separate pump cover 11 on an open axial end of the pump housing 10 and leads to an end face of a pump impeller 2 that is fixed on a shaft 4 .
  • the perimeter of the pump chamber 10 is surrounded by a volute which transitions tangentially into a discharge port forming a pump outlet.
  • the pump impeller 2 is a known radial pump impeller with a central opening adjacent to the intake port.
  • the delivery flow, which flows against the pump impeller 2 through the intake port 16, is accelerated radially outwards by the internal vanes into the spiral housing of the pump chamber 10 and discharged.
  • the pump housing 1 On a side shown on the left, the pump housing 1 includes a cavity referred to as the motor chamber 13 , which is separated from the pump chamber 10 by a separating element designed as a support flange 12 .
  • the support flange 12 is made of a material with a high thermal conductivity, such as metal, to enable good heat transfer between the motor chamber 13 and the pump chamber 10 and good heat dissipation from the motor chamber 13 to the pumped medium in the pump chamber 10.
  • the support flange 12 is made of an aluminum alloy.
  • the support flange 12 has a partition portion 12a providing the partition between the motor chamber 13 and the pump chamber 10, and a boss portion 12b on which the stator 31 is fixed.
  • the pump housing 1 has a pot-shaped motor housing 17 which forms the motor chamber 13 .
  • the support flange 12 and the pump cover 11 are accommodated in the motor housing 17 on an axially open side of the latter, the support flange 12 abuts against a stop surface provided on the motor housing 17 and the pump cover 11 is fixed to the motor housing 17 in this position.
  • a sealing element such as an O-ring, is arranged between the support flange 12 and the pump housing in order to prevent leakage of the pumped medium in the pump chamber 10 .
  • the sealing member is disposed on an outer peripheral surface of the partition portion 12a of the support flange 12 in the present embodiment, but the sealing member may be disposed on the side surface of the partition portion 12a facing the pump cover 11 in the axial direction, for example.
  • the above The configuration described allows easy and accurate positioning of the support flange 12 and the pump cover 11 in the radial direction.
  • an outer rotor type brushless electric motor 3 is accommodated in the motor chamber 13.
  • a stator 31 having field coils of the electric motor 3 is fixed around the boss portion 12a of the support flange 12 having, for example, a cylindrical shape so that the stator 31 is in contact with the boss portion 12a. This ensures very good heat dissipation from the stator 31 in the motor chamber 13 via the carrier flange 12 to the pumped medium in the pump chamber 10 .
  • a rotor 32 with permanent magnet rotor poles is rotatably fixed on the shaft 4 around the stator 31
  • the control unit or printed circuit board 18 of the pump shown including power electronics of the electric motor 3 is arranged in the axial direction between the separating section 12a of the support flange 12 and the stator 31 . Due to the spatial proximity between the circuit board 18 and the carrier flange 12 on the one hand and the stator 31 and the circuit board 18 on the other hand, good heat dissipation from the circuit board 18 via the carrier flange 12 to the pumped medium can be made possible in this case and good conditions are created for a simple and robust contact or wiring between the circuit board 18 and the electric motor 3 created.
  • a filling material 19, such as a gap filler, with a high thermal conductivity can be arranged in the air gap between the separating section 12a and the circuit board 18, so that the heat transfer from the circuit board 18 to the pumped medium in the pump chamber 10 can be further improved.
  • circuit board 18 of the pump can also be arranged elsewhere in the motor chamber 13, such as on the bottom section of the motor housing 17 facing the axial end of the electric motor.
  • circuit board 18 of the pump can also be arranged outside of the motor chamber 13 .
  • the electric motor 3 is a dry-running type, the field coils of which are unencapsulated or open at the air gap between the rotor 32 and the motor chamber 13 .
  • the rotor 32 has a pot shape that is typical of an external rotor, which sits on the free end of the shaft 4 shown on the left and carries the permanent-magnetic rotor poles in the axial region of the stator 31 .
  • the shaft 4 is mounted axially at the right free end.
  • the axial plain bearing comes about through a sliding surface pairing between the end face of the shaft 4 and a contact surface, which is provided by a projection or a strut in the intake port 16 in front of the pump impeller 2 and positioned accordingly on the pump cover 11 .
  • the pump impeller 2 pushes the shaft 4 by a suction effect in the direction of the intake port 16 against the contact surface, so that an axial load bearing of the shaft bearing is sufficient in this one direction.
  • the axial plain bearing is also lubricated with coolant, at least in the form of an initial wetting of the sliding surfaces by the coolant, which occurs again under vibration or turbulence.
  • the coolant-lubricated plain bearing 41 is designed as a sintered bearing with a defined porosity of over 40%, for which, for example, known standard materials for sintered plain bearings, such as sintered iron and sintered bronze, can be used.
  • sintered materials such as sintered iron and sintered bronze
  • a very small bearing play of less than 10 ⁇ m can be set when using a steel shaft due to the similar thermal expansion of sintered bearings and steel shafts.
  • radial displacements of the rotor shaft can be largely suppressed and the noise emission of the pump can be reduced.
  • the porous sintered material quickly fills with the pumped medium and therefore enables the heat generated in the plain bearing itself and the heat transferred from other pump elements to the plain bearing to be efficiently absorbed and dissipated into the pumped medium.
  • the sintered plain bearing 41 shown also has two axial coolant flow channels 14 with a predetermined depth starting from the end of the sintered plain bearing 41 on the pump chamber 10 side.
  • the pumped medium can flow in a defined direction of flow, starting from the radially outer area of the pump chamber 10 with high pressures via the area of the pump chamber 10 between the pump impeller 2 and the support flange 12 with pressures decreasing radially inwards , through the coolant flow passages 14 and the axial end portion of the plain bearing 41 on the side opposite to the pump impeller 2 without a coolant flow passage 14 (filter portion), to the space between the sintered plain bearing 41 and the shaft seal 5, through the bearing gap of the plain bearing 41, and finally to the be recycled radially inner region of the pump chamber 10 with even lower pressures.
  • the axial circulation of the coolant in the bearing gap in combination with the rotational movement between the sliding surfaces ensures an even distribution and lubrication of the bearing gap with the coolant.
  • the coolant contains an antifreeze additive with a friction-reducing property, such as a glycol, silicate or the like. At the same time, particles from abrasion of the sliding surface pairing are transported away to the pump chamber and into the flow.
  • coolant flow channels 14 are shown, it is sufficient according to the invention if at least one such coolant flow channel 14 is provided. In addition, more than two coolant flow channels 14 can also be provided.
  • the coolant flow channels 14 are designed as grooves on the outer circumference of the plain sintered bearing 41 .
  • the coolant flow channels 14 can also be provided as axially extending blind holes in the plain sintered bearing 41 .
  • the at least one coolant flow channel 14 embodied as a groove can be embodied in a spiral shape around the circumference of the sintered plain bearing 41 .
  • the porous sintered plain bearing 41 also serves as a filter element for the conveyed medium flowing through, so that only filtered coolant reaches the shaft sealing ring and the bearing gap. A separate filter element for the pumped medium is therefore not required.
  • a shaft seal 5 is arranged between the radial sintered slide bearing 41 and the motor chamber 13 and seals an open end of the projection section 12b of the carrier flange 12 to the shaft 4 .
  • the shaft seal 5 is a double-lip seal that is pressed into the projection section 12b of the carrier flange 12 and has two sealing lips (not shown) one behind the other, directed in the direction of the radial plain bearing 41, for one-sided dynamic sealing on the shaft circumference.
  • the small, unavoidable leakage that occurs drop by drop over the course of time through the shaft seal 5 from the circulation of the coolant does not come into direct contact with the field coils or any motor electronics that may be arranged in the motor chamber 13 .
  • the leakage droplets reach the inner surface of the rotating rotor 32 behind the shaft seal 5 and are carried radially outwards by the centrifugal force. Due to turbulence at the rotor poles or permanent magnets and the operating temperature resulting from the power loss at the field coils, the leakage droplets evaporate in the air gap between the stator 31 and the rotor 32 without wetting the radially inner stator 32 in the liquid phase, i. to exert a corrosive effect.
  • the leakage droplets cannot reach the engine compartment 13 directly in the axial direction, but are caught on the inner surface of the rotor 32 and fed to the air gap for evaporation. In order to keep the volume of the air gap small, it is designed to complement the circumferences of the stator 32 .
  • the transition of leakage droplets from the liquid to the gaseous phase is accompanied by an increase in volume, which would lead to an increase in pressure in the case of a closed volume of the motor chamber 13, regardless of a pressure fluctuation that would occur due to temperature fluctuations between operation and standstill of the pump.
  • an in 1 membrane not shown, is provided, which is attached to the pot-shaped motor housing 17 in the motor chamber 13 .
  • the membrane can, for example, at an in 1 illustrated opening 20 of the motor housing 17 may be provided at the outer periphery of the motor housing 17.
  • the diaphragm can also be bonded at a radially central portion of an inner surface of the motor housing 17 facing the rotor in the axial direction, and enables pressure fluctuations from the motor chamber 13 to the atmosphere to be equalized. As a result, an inexpensive and large-area adhesive membrane can be used at a protected location.
  • the motor housing 17 then has an opening or a permeable or open-pored structure in this area, which is designed in such a way that the membrane is adequately protected during high-pressure jet tests and is not damaged.
  • the membrane is semi-permeable with regard to water permeability, ie it does not allow water to pass through in the liquid phase, whereas air laden with moisture can diffuse through up to a limit with regard to droplet size or a droplet density agglomerating on the membrane surface.
  • warm air laden with moisture can pass through the membrane, so that evaporated leakage droplets are effectively discharged into the atmosphere.
  • the membrane in turn protects against the ingress of spray water or the like when the vehicle is being driven.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (11)

  1. Pompe à liquide de refroidissement électrique pour le transport d'un liquide de refroidissement dans un véhicule, présentant :
    un carter de pompe (1) avec une chambre de pompe (10), dans laquelle une roue de pompe (2) est logée de manière rotative, une entrée (16) et une sortie, qui sont reliées à la chambre de pompe (10) ;
    un arbre (4), qui est monté de manière rotative sur un élément de séparation (12) entre la chambre de pompe (10) et une chambre de moteur (13) séparée de la chambre de pompe (10), et sur lequel la roue de pompe (2) est fixée ;
    un moteur électrique (3) fonctionnant à sec avec un stator (31) radialement intérieur et un rotor (32) radialement extérieur, lequel est logé dans la chambre de moteur (13) ;
    caractérisée en ce que
    un montage radial de l'arbre (4) est fourni au moyen d'un palier lisse fritté (41) radial lubrifié par le liquide de refroidissement avec une porosité définie, qui est disposé dans la direction axiale entre la roue de pompe (2) et le rotor (32) ; et
    un joint d'étanchéité d'arbre (5) est disposé entre le palier lisse radial (41) et la chambre de moteur (13) ;
    dans laquelle au moins un canal d'écoulement de liquide de refroidissement (14) avec une profondeur prédéfinie partant de l'extrémité du palier lisse fritté (41) sur la face de la chambre de pompe (10) est prévu dans le palier lisse fritté (41) dans la direction axiale.
  2. Pompe à liquide de refroidissement électrique selon la revendication 1, dans laquelle
    le canal d'écoulement de liquide de refroidissement (14) s'étend dans la direction axiale à partir de l'extrémité du palier lisse fritté sur la face de la chambre de pompe (10) sur 90 % de la profondeur de composant du palier lisse fritté (41).
  3. Pompe à liquide de refroidissement électrique selon la revendication 1 ou 2, dans laquelle
    le jeu de palier dans le palier lisse fritté (41) de l'arbre (4) est réglé pour être inférieur à 10 µm.
  4. Pompe à liquide de refroidissement électrique selon l'une quelconque des revendications 1 à 3, dans laquelle
    la porosité du palier lisse fritté (41) est réglée pour être supérieure à 40 %.
  5. Pompe à liquide de refroidissement électrique selon l'une quelconque des revendications 1 à 4, dans laquelle
    le rotor (32) est réalisé sous la forme d'un pot, dont la surface intérieure est tournée vers le joint d'étanchéité d'arbre (5) ainsi que fixée sur l'arbre (4) de manière à chevaucher axialement celui-ci.
  6. Pompe à liquide de refroidissement électrique selon l'une quelconque des revendications 1 à 5, dans laquelle
    un montage axial de l'arbre (4) est fourni par un palier lisse axial, lequel est formé par une extrémité libre de l'arbre (4) et une surface d'appui sur le carter de pompe (1), de préférence un couvercle de pompe (11).
  7. Pompe à liquide de refroidissement électrique selon l'une quelconque des revendications 1 à 6, dans laquelle
    le joint d'étanchéité d'arbre (5) présente au moins deux lèvres d'étanchéité pour l'étanchéification dynamique sur la périphérie de l'arbre, qui sont orientées au moins vers une face axiale de manière à avoir une action d'étanchéité.
  8. Pompe à liquide de refroidissement électrique selon l'une quelconque des revendications 1 à 7,
    dans laquelle le stator (31) du moteur électrique (3) est disposé en chevauchement axial avec le au moins un canal d'écoulement de liquide de refroidissement (14).
  9. Pompe à liquide de refroidissement électrique selon l'une quelconque des revendications 1 à 8, présentant en outre
    une unité de commande (18), laquelle est disposée dans la chambre de moteur (13) dans la direction axiale entre l'élément de séparation (12) et le stator (31).
  10. Pompe à liquide de refroidissement électrique selon l'une quelconque des revendications 1 à 9, dans laquelle
    la chambre de moteur (13) présente une ouverture (20) vers l'atmosphère, qui est fermée par une membrane de compensation de pression étanche au liquide et perméable à la vapeur.
  11. Utilisation d'une pompe à liquide de refroidissement électrique selon l'une quelconque des revendications 1 à 10 en tant que pompe à eau auxiliaire dans un système d'acheminement de liquide de refroidissement dans un véhicule avec un moteur à combustion interne et une pompe à eau principale.
EP18808277.0A 2018-02-22 2018-11-21 Pompe à liquide de refroidissement pourvue d'un dispositif palier optimisé et à bilan thermique amélioré Active EP3755907B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018104015.6A DE102018104015A1 (de) 2018-02-22 2018-02-22 Kühlmittelpumpe mit optimierter Lageranordnung und verbessertem Wärmehaushalt
PCT/EP2018/082035 WO2019161950A1 (fr) 2018-02-22 2018-11-21 Pompe à liquide de refroidissement pourvue d'un dispositif palier optimisé et à bilan thermique amélioré

Publications (2)

Publication Number Publication Date
EP3755907A1 EP3755907A1 (fr) 2020-12-30
EP3755907B1 true EP3755907B1 (fr) 2023-07-19

Family

ID=64477124

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18808277.0A Active EP3755907B1 (fr) 2018-02-22 2018-11-21 Pompe à liquide de refroidissement pourvue d'un dispositif palier optimisé et à bilan thermique amélioré

Country Status (6)

Country Link
US (1) US11306723B2 (fr)
EP (1) EP3755907B1 (fr)
CN (1) CN111601971B (fr)
BR (1) BR112020014776A2 (fr)
DE (1) DE102018104015A1 (fr)
WO (1) WO2019161950A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025157607A1 (fr) * 2024-01-24 2025-07-31 Bühler Motor GmbH Élément de séparation pour une pompe à liquide

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018123901A1 (de) 2018-09-27 2020-04-02 Nidec Gpm Gmbh Gleitlager mit Dichtungsanordnung und Wasserpumpe mit demselben
DE102018123909B4 (de) 2018-09-27 2020-06-10 Nidec Gpm Gmbh Kompakt-Gleitlager mit Dichtungsanordnung und Wasserpumpe mit demselben
DE102018125031A1 (de) * 2018-10-10 2020-04-16 HELLA GmbH & Co. KGaA Pumpe, insbesondere für einen Flüssigkeitskreislauf in einem Fahrzeug
DE102020105339B4 (de) 2020-02-28 2022-06-15 Nidec Gpm Gmbh Montageoptimierte kühlmittelpumpe
DE102020105337B4 (de) 2020-02-28 2022-08-04 Nidec Gpm Gmbh Thermisch optimierte Kühlmittelpumpe
DE102020105343B4 (de) 2020-02-28 2022-07-07 Nidec Gpm Gmbh Kostenoptimierte Kühlmittelpumpe
DE102020105771A1 (de) 2020-03-04 2021-09-09 Nidec Gpm Gmbh Wasserpumpenlagereinheit mit sperrfluid-schmierstoff sowie damit ausgerüstete wasserpumpe
DE102020105781A1 (de) 2020-03-04 2021-09-09 Nidec Gpm Gmbh Wasserpumpenlagereinheit mit Dichtungsanordnung sowie damit ausgerüstete Wasserpumpe
DE102020109516B4 (de) 2020-04-06 2022-08-11 Nidec Gpm Gmbh Wasserpumpe mit anwendungsoptimiertem Aufbau
DE102020121332B4 (de) 2020-08-13 2024-10-24 Nidec Gpm Gmbh Axialgleitlageranordnung für eine zu lagernde Welle eines Pumpenrads einer Radialpumpe sowie Radialpumpe aufweisend die Axialgleitlageranordnung
CN114135386B (zh) * 2020-09-03 2024-06-21 安徽威灵汽车部件有限公司 泵装置和车辆
EP4056853B1 (fr) * 2020-09-03 2025-02-26 Anhui Welling Auto Parts Co., Ltd. Dispositif de pompe et véhicule
LU102208B1 (de) * 2020-11-13 2022-05-17 Wilo Se Selbstentlüftende Nassläuferpumpe
DE102021111670A1 (de) 2021-05-05 2022-11-10 Nidec Gpm Gmbh Kreiselpumpe mit nasslaufendem Elektromotor
DE102021111677B4 (de) 2021-05-05 2023-09-28 Nidec Gpm Gmbh Kreiselpumpe mit nasslaufendem Elektromotor
DE102021211693A1 (de) * 2021-10-15 2023-04-20 Mahle International Gmbh Mehrfachpumpeneinrichtung
DE102021133692A1 (de) * 2021-12-17 2023-06-22 Pierburg Pump Technology Gmbh Elektrische Kraftfahrzeug-Fluidpumpe
KR20250126382A (ko) * 2024-02-16 2025-08-25 현대자동차주식회사 씰링장치 및 이를 포함하는 인휠 모터
FR3160523A1 (fr) 2024-03-19 2025-09-26 Valeo Systemes Thermiques Moteur électrique notamment configuré pour équiper une pompe
CN119652014B (zh) * 2024-12-24 2025-10-31 舟山市7412工厂 一种水泵用盘式电机自循环水冷却结构

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2843280B2 (ja) 1995-09-29 1999-01-06 アイシン精機株式会社 ウォータポンプ
DE10012662B4 (de) * 2000-03-15 2010-11-04 Geräte- und Pumpenbau GmbH Dr. Eugen Schmidt Merbelsrod Kühlmittelpumpe mit elektrisch kommutiertem Elektromotor
JP2003065289A (ja) 2001-08-24 2003-03-05 Nsk Ltd ウォータポンプ用シール装置とウォータポンプ用回転支持装置とウォータポンプ
DE10221843B4 (de) * 2002-05-16 2004-12-30 Minebea Co., Ltd. Elektromotor zur Verwendung als Pumpenmotor und Pumpe
KR100468367B1 (ko) * 2002-08-19 2005-01-27 에프에이지베어링코리아유한회사 워터펌프 베어링의 시일링장치
JP2005061391A (ja) * 2003-07-30 2005-03-10 Aisin Seiki Co Ltd ポンプ装置
DE202005019163U1 (de) * 2005-12-07 2006-04-27 Super Electronics Co., Ltd. Außenrotor-Pumpe mit einem innendurchmesserorientierten ringförmigen Ferromagnet
BR112012003240A2 (pt) * 2009-08-12 2017-03-21 Harrier Tech sistema e método para uma bomba de transmissão direta
CN102562605A (zh) * 2010-12-06 2012-07-11 株式会社博世电装 车辆的冲洗泵
CN202108767U (zh) * 2011-07-01 2012-01-11 沈阳鼓风机集团股份有限公司 一种水润滑导轴承
KR101305671B1 (ko) * 2011-11-29 2013-09-09 현대자동차주식회사 전동식 워터펌프
JP6029597B2 (ja) * 2012-01-31 2016-11-24 三菱電機株式会社 ポンプ及び冷凍サイクル装置並びにポンプの製造方法
CN102606510A (zh) * 2012-03-27 2012-07-25 上海阿波罗机械股份有限公司 一种用于安全壳喷淋泵的水导轴承
JP2014173585A (ja) * 2013-03-13 2014-09-22 Hitachi Automotive Systems Ltd 電動流体ポンプ
EP2908409B1 (fr) * 2014-02-12 2016-09-14 Pierburg Pump Technology GmbH Moteur électrique de groupe auxiliaire de véhicule automobile
WO2015131948A1 (fr) * 2014-03-06 2015-09-11 Pierburg Pump Technology Gmbh Pompe à liquide électrique pour automobile
JP6369194B2 (ja) 2014-07-23 2018-08-08 株式会社ジェイテクト 電動ポンプユニット
KR20160109071A (ko) * 2015-03-09 2016-09-21 현대자동차주식회사 회로기판을 갖는 전동식 펌프
DE102015114783B3 (de) * 2015-09-03 2016-09-22 Nidec Gpm Gmbh Elektrische Kühlmittelpumpe mit strömungsgekühlter Steuerschaltung
CN105221441A (zh) * 2015-09-18 2016-01-06 河南省西峡汽车水泵股份有限公司 一种低能耗高寿命的汽车电动水泵
CN105443400B (zh) * 2016-01-26 2018-02-16 河北深海电器有限公司 电子水泵
DE102016206405A1 (de) * 2016-04-15 2017-10-19 Bühler Motor GmbH Pumpenmotor mit einem Festlager
CN206159122U (zh) * 2016-08-31 2017-05-10 大唐武安发电有限公司 应用于立式蜗壳式离心泵的径向导向加固装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025157607A1 (fr) * 2024-01-24 2025-07-31 Bühler Motor GmbH Élément de séparation pour une pompe à liquide

Also Published As

Publication number Publication date
CN111601971A (zh) 2020-08-28
BR112020014776A2 (pt) 2020-12-08
DE102018104015A1 (de) 2019-08-22
EP3755907A1 (fr) 2020-12-30
US11306723B2 (en) 2022-04-19
US20210079920A1 (en) 2021-03-18
WO2019161950A1 (fr) 2019-08-29
CN111601971B (zh) 2021-09-03

Similar Documents

Publication Publication Date Title
EP3755907B1 (fr) Pompe à liquide de refroidissement pourvue d'un dispositif palier optimisé et à bilan thermique amélioré
DE102017127574B3 (de) Kühlmittelpumpe mit anwendungsoptimiertem Aufbau und verbessertem Wärmehaushalt
EP3676484B1 (fr) Pompe de refroidissement optimisé selon l'utilisation
DE112017002583B4 (de) Lageraufbau für einen turbolader und turbolader
DE10047387B4 (de) Elektrisch angetriebene Kühlmittelpumpe
DE112010000875T9 (de) Verbesserungen in einem elektrisch gesteuerten Turbolader
DE102014113412B3 (de) Strömungsgekühlte Kühlmittelpumpe mit Nassläufer
EP1391586B1 (fr) Turbocompresseur
US11415168B2 (en) Sliding-contact bearing with a sealing arrangement, and water pump with same
DE112019000673T5 (de) Schmier- und kühlsystem für eine elektrische maschine, elektrische maschine, die an einen turbolader gekoppelt ist, und entsprechender turbolader
WO2016107618A1 (fr) Pompe à liquide de refroidissement
DE102018126775A1 (de) Elektrische Wasserpumpe mit aktiver Kühlung
WO2020064398A1 (fr) Palier lisse compact doté d'un système d'étanchéité et pompe à eau munie dudit palier
WO2019166311A1 (fr) Palier et entraînement pour un compresseur pour r718
WO2019166118A1 (fr) Pompe électrique à réfrigérant
DE112018003847T5 (de) Motor
DE112015002890T5 (de) Kompressor
US20110073412A1 (en) Axial fan compact bearing viscous pump
DE102019133985A1 (de) Elektrische Maschine
DE102020109516B4 (de) Wasserpumpe mit anwendungsoptimiertem Aufbau
EP4443007A1 (fr) Pompe turbomoléculaire

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20200817

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20230201

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230404

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502018012753

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20230719

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230719

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231020

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231119

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230719

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230719

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231120

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231019

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230719

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230719

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231119

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230719

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231020

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230719

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230719

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502018012753

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230719

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230719

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230719

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230719

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230719

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230719

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230719

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230719

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230719

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502018012753

Country of ref document: DE

26N No opposition filed

Effective date: 20240422

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230719

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231121

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231130

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20231121

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230719

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231121

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231130

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230719

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20231130

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231121

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20240601

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231121

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231121

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231121

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231130

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20240601

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230719

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230719

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 1589739

Country of ref document: AT

Kind code of ref document: T

Effective date: 20231121

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231121

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231121

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20181121

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20181121

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230719