EP3832137B1 - Pompe à vis - Google Patents

Pompe à vis Download PDF

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Publication number
EP3832137B1
EP3832137B1 EP20205416.9A EP20205416A EP3832137B1 EP 3832137 B1 EP3832137 B1 EP 3832137B1 EP 20205416 A EP20205416 A EP 20205416A EP 3832137 B1 EP3832137 B1 EP 3832137B1
Authority
EP
European Patent Office
Prior art keywords
housing
screw spindle
housing part
pump according
spindle
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
EP20205416.9A
Other languages
German (de)
English (en)
Other versions
EP3832137A1 (fr
Inventor
Jürgen Metz
Florian Popp
Kristin Lissek
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.)
Leistritz Pumpen GmbH
Original Assignee
Leistritz Pumpen GmbH
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Filing date
Publication date
Application filed by Leistritz Pumpen GmbH filed Critical Leistritz Pumpen GmbH
Publication of EP3832137A1 publication Critical patent/EP3832137A1/fr
Application granted granted Critical
Publication of EP3832137B1 publication Critical patent/EP3832137B1/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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C2/16—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • F01C21/108—Stators; Members defining the outer boundaries of the working chamber with an axial surface, e.g. side plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F04C11/008—Enclosed motor pump units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C2/16—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • F04C2/165—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type having more than two rotary pistons with parallel axes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/10—Fluid working
    • F04C2210/1044—Fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00—Manufacture
    • F04C2230/60—Assembly methods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/20—Rotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/30—Casings or housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/805—Fastening means, e.g. bolts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/11—Kind or type liquid, i.e. incompressible

Definitions

  • the invention relates to a screw pump.
  • centrifugal pumps are used to pump the coolant to cool the battery or the power electronics.
  • the disadvantage is that such centrifugal pumps only have a relatively low overall efficiency of approx. 40%, which is too low to be used in the long term in such partially or fully electric motor vehicles, since such centrifugal pumps use too much electricity with too little power pull.
  • centrifugal pumps with an average diameter of 70 mm are also relatively large and have a complex structure.
  • DE102017210771A1 discloses a screw spindle pump comprising at least two screw spindles and a pump housing for receiving the two screw spindles.
  • the pump housing has at least one elongated insert which acts as a stop element for the screw spindles, against which the screw spindles are supported and which forms a first stop for the drive spindle and a second stop for the running spindle.
  • the elongated insert is clamped into a corresponding receptacle of the pump housing using a cross-sectional dimension of the insert.
  • the invention is therefore based on the problem of specifying an improved pump that is particularly suitable for use in modern motor vehicles.
  • a screw spindle pump designed to convey a cooling liquid for cooling a battery and / or power electronics or a drive unit, in particular an internal combustion engine or an electric machine of a motor vehicle, or a cleaning or supply liquid of a motor vehicle, comprising a housing, in which a work spindle to be coupled or coupled to a drive unit and at least one running spindle meshing with it is accommodated, as well as a feather key-like support element which is fixed on the housing side and on which the work spindle and the running spindle are axially supported, at least one opening being provided on the housing is, through which the support element can be inserted, which in the assembly position has one end in the opening and with the other end is accommodated in a receptacle diametrically opposite the opening, the support element being secured via at least one securing element which closes the opening on the outside.
  • the invention proposes a screw spindle pump that is designed and dimensioned specifically for conveying a coolant for cooling the battery or power electronics or another cleaning or supply fluid of the motor vehicle, that is, for example, specifically designed for conveying a water-glycol mixture as a coolant .
  • a screw spindle pump is characterized in particular by a high overall efficiency of approx. 70%, so it works much more efficiently than known centrifugal pumps, which is more beneficial for the overall energy balance of the motor vehicle whose battery it is powered by.
  • the screw pump can be dimensioned to be very small, while at the same time offering high efficiency and a significantly higher throughput than centrifugal pumps, and that such screw pumps can also be operated at very high speeds of several 1,000 rpm, makes them particularly suitable for use in modern motor vehicles, where centrifugal pumps have proven to be unsuitable, not least due to their size and length.
  • the screw spindle pump according to the invention is characterized, on the one hand, by the possibility of designing it in a very small format, and on the other hand, the structure is also simple.
  • the screw spindle pump has a housing in which the at least two spindles are accommodated, the spindles being axially fixed or supported via a simple, feather key-like support element, which means that no special precautions have to be taken on the spindle side for the axial support or storage of the spindles .
  • This feather key-like support element is mounted on the housing side in a very simple manner by inserting it into the housing from the outside through an opening provided on the housing side.
  • the front end of the support element is in one corresponding receptacle diametrically opposite the opening, the other, rear end is received in the opening, via which the support element is axially supported so that it can fulfill its supporting function for the spindles.
  • the support element is easily secured in the assembly position by a securing element which is provided on the housing side and which closes the opening.
  • the opening or the support element is expediently provided on a cylindrical housing section, which also makes it particularly easy to place the securing element, which has a corresponding, cylindrical overlapping section.
  • the invention therefore proposes a very small, simply constructed screw spindle pump that runs very smoothly, therefore works very quietly, and can be operated at extremely high speeds of several 1,000 rpm. It has a high overall efficiency of up to approx. 70%, which is almost constant over the high speed range, and is characterized by a flat efficiency curve over the speed. Therefore, such a screw spindle pump can be used advantageously, particularly in modern motor vehicles, be it motor vehicles with a partially or fully electric drive, or motor vehicles with conventional internal combustion engines, or motor vehicles with alternative drive concepts, since it can be made in an extremely small format, but at the same time has a very high overall efficiency and therefore has low power consumption and can therefore also be integrated into complex systems with little installation space.
  • the front end of the feather key-like support element which is first pushed through the opening, is fixed in a corresponding opposite receptacle.
  • This receptacle can be a simple recess into which the key end engages.
  • a symmetrical design is therefore provided here in that two diametrically opposed openings are formed, which is particularly simple from a manufacturing perspective.
  • the feather key-like support element can be inserted very easily from both sides during assembly, after which all that remains is to place the securing element that secures the support element with respect to both openings.
  • the housing has a cylindrical section on the outside, on which one or two openings are provided, on which cylindrical section the securing element is arranged or can be arranged.
  • the cylindrical shape can be easily formed during production, both in terms of the housing and the securing element, and placing the securing element on the cylindrical section is very simple, as it simply needs to be pushed on and then automatically overlaps the corresponding openings .
  • the housing is in two parts and a first housing part, in which the working spindle and the at least one running spindle are accommodated, and a second housing part, which is detachably arranged or can be arranged on the first housing part and which has a connection section for a coolant supply line.
  • the housing of the screw spindle pump according to the invention is therefore in two parts, with a first and a second housing part, the first housing part being the actual central housing part in which the spindle and the support element are provided.
  • the second housing part which is or can be detachably arranged on the first housing part, however, has a connection section for a coolant supply line.
  • This configuration makes it possible, on the one hand, to design the central first housing part in a quasi-standardized manner, since it is the same for all pumps.
  • the second housing part is also the securing element.
  • the second housing part has a dual function, namely, on the one hand, providing the connection section for a coolant supply line, thus forming the suction-side connection, but on the other hand, at the same time, it also offers the securing function for the key-like support element.
  • the second housing part has a corresponding securing section with which the second housing part is pushed onto the first housing part, crossing the section in which the one or two openings in which the feather key ends are accommodated.
  • the assembly is extremely simple, as after setting the key, only the second housing section has to be pushed on and fixed accordingly, after which the assembly is ultimately finished.
  • the second housing part is also the securing element
  • a union ring as the securing element, which is attached to the housing, and to provide a separate connecting piece component, which is detachably arranged or can be arranged on the housing.
  • the union ring for example a screw ring
  • a connecting piece component must then be fixed to the housing, which can also be done, for example, by screwing. While here the screw spindle has three components, i.e.
  • the first alternative invention described above in which the second housing part is quasi multifunctional and on the one hand provides the connecting piece and on the other hand serves as a securing element, is characterized by a particularly small number of parts.
  • At least one fixing element is expediently used for this purpose, and such a fixing element can be of different nature as long as it connects the corresponding elements to one another sufficiently firmly, i.e. secures or fixes them in particular axially relative to one another.
  • the two housing parts or two or all components of the union ring design can also be screwed together, for which purpose corresponding threaded sections are provided on the components.
  • such a fixing element can be a clip or clasp which engages in recesses and/or grooves on both housing parts or the housing and the union ring.
  • a very simple mechanical fixation takes place using the clamp or clasp, as the clamp or clasp simply has to be inserted into the corresponding recesses/grooves, whereby the parts are automatically fixed to one another.
  • a support ring on which the second housing part or the union ring rests, and via which the second housing part or the union ring is radially supported on the first housing part or on the housing.
  • the support ring has, for example, a conical contact surface with which it is supported on a conical support surface on the first housing part or on the housing.
  • At least one sealing element sealing between the first and the second housing part or the union ring and the housing for example a simple sealing ring made of rubber or another elastomer or the like, is expediently provided.
  • This sealing element creates a fluid-tight seal between the two-part housing or the union ring and the housing, so that any fluid leakage in this area is excluded.
  • a circumferential groove or a collar is provided in which the sealing element is received in the form of a sealing ring.
  • the groove or collar as well as the sealing ring are of course dimensioned so that a secure, fluid-tight system or seal is guaranteed.
  • the screw spindle pump according to the invention basically offers the possibility of designing it in a very small format, i.e. of building it very short axially and very slim radially.
  • the meshing sections of the drive spindle and the at least one running spindle have a length of a maximum of 4 cm, in particular a maximum of 3 cm, and a minimum of 1 cm, in particular a minimum of 2 cm.
  • the spindle lengths are only in the range of a few centimeters, so that the entire housing length, be it a two-part housing or a one-piece housing, ultimately including the connecting piece configuration, regardless of how it is specifically designed, is also in the range of a few centimeters moved.
  • the connecting piece section itself protrudes only a few centimeters from the actual spindle housing area, so that its length is in the range of the spindle length. This means that such a screw spindle pump has a total length of, for example, a maximum of 8 cm, but for spindles shorter than 4 cm it can also be significantly less.
  • the spindle is as small as possible radially, it is expedient if the sections of the work spindle and the at least one running spindle that mesh with one another have an outer diameter of a maximum of 1 cm and a minimum of 0.5 cm. This means that, according to the invention, extremely slim spindles are also used, which of course has an advantageous effect on the outer diameter of the housing.
  • the housing no matter how specifically designed, is to be coupled to a drive unit, usually an electric motor that is also very small.
  • a connection geometry is expediently provided at the drive end of the drive spindle, on which a Coupling element coupled or connectable to the drive unit is connected in a rotationally fixed manner.
  • a mechanical clutch is, for example DE 10 1015 101 443 A1 known and can also be provided in the screw pump according to the invention.
  • the coupling element offers a standardized interface to which the drive spindle on the one hand and the drive shaft of the drive unit on the other hand can be connected when the housing of the pump is connected to the housing of the drive unit, usually screwed.
  • the housing i.e. the first and second housing parts when divided into two parts, or the housing and the union ring etc. to be made from plastic, as well as the connecting piece, if one is provided separately.
  • the entire housing of the screw pump according to the invention is made of plastic, and is therefore very light and can be manufactured using a suitable plastic injection molding process. Only the spindles are made of metal; the same applies to the clamp or clasp, if provided.
  • the coupling element can also be made of metal, but also plastic.
  • the invention also relates to the use of a screw pump, in particular a screw pump of the type described above, in a motor vehicle for conveying a cooling or cleaning or supply liquid.
  • the screw spindle pump is used to convey a coolant for cooling a battery or power electronics or a drive unit such as an internal combustion engine or an electric machine of the motor vehicle, with a water-glycol mixture preferably being used as the coolant.
  • the invention further relates to a motor vehicle, comprising at least one screw pump of the type described above.
  • screw spindle pumps can also be provided in the motor vehicle, which are assigned to different units and serve to convey cooling, cleaning or supply liquid.
  • a first screw spindle pump can be used to deliver the coolant to the battery or batteries or the power electronics of the vehicle, while a second screw pump can be used, for example, to deliver a cleaning fluid that is used for high-pressure cleaning of cameras or sensors of vehicles, in particular partially or fully autonomous vehicles , is sprayed on, serves and the like.
  • Fig. 1 shows, in the form of a schematic representation, a screw spindle pump 1 according to the invention, which is designed to convey a coolant for cooling a battery and / or power electronics or a cleaning or supply fluid of a motor vehicle. It consists of a housing 2 with a first housing part 3 and a second housing part 4, which can be detachably attached to one another.
  • a work spindle 5 and a running spindle 6 are also provided, which are in the assembly position, see Fig. 2 , interlock and comb together.
  • a coupling element 7 can be attached to a corresponding connection geometry, via which a connection to a drive unit, not shown in detail, in the form of an electric motor can be achieved.
  • a support ring 9 is provided, which serves to radially support the second housing part 4, as well as a sealing element 10 in the form of a sealing ring, which serves to seal the two housing parts 3, 4 to one another in a fluid-tight manner, as well as a fixing element 11 in the form of a clamp or Clasp is provided, via which the two housing parts 3, 4 are fixed to one another.
  • the first housing part 3 which has an end fastening flange 12, via which it is connected to the housing of the drive unit via suitable screw connections comprising bushings 13 into which corresponding connecting screws are screwed.
  • the first housing part is open in the area of the fastening flange 12, viewed axially, so that the ends of the two spindles 5, 6 are exposed, and a coupling to the drive unit via the coupling element 7 is easily possible, as is the case indicated by the arrow S Fluid sucked in from the suction side shown can be released via this pressure side marked with arrow D.
  • the first housing part 3 further has an elongated, cylindrical section 14, on which, in the example shown, two openings 15, of which only one is shown in the figures, are formed, which serve to accommodate a feather key-like support element 16.
  • a feather key-like support element 16 This will, see Fig. 2 , introduced from the outside into the first opening 15 from one side and inserted with the leading end into the opposite second opening, while the other end is received in the first opening.
  • This feather key-like support element serves to axially support the two spindles 5, 6.
  • a groove-like receptacle 17 On the outside of the first housing part there is also a groove-like receptacle 17 which, as will be discussed below, is provided Receiving the fixing element 11 is used, via which the second housing part 4 is fixed to the first housing part 3. Furthermore, a conical support section 18 is provided on the outside of the first housing part 3, against which the support ring 9 rests with a conical contact surface 19, as Fig. 2 shows.
  • the Figures 1 and 2 also show corresponding details of the second housing part 4.
  • This has two diametrically opposed slot-like recesses 20, which extend virtually transversely to the longitudinal axis of the second housing part 4. In the assembly position, they lie directly adjacent to the groove-like recess 17 running around here, so that they can each accommodate a leg of the fixing element 11, which on the one hand engages in the slot-like recess 20, but on the other hand also in the groove-like recess 17, so that axial securing is provided.
  • a circumferential groove or collar 21 is provided on the inner circumference of the second housing part 4, in which the sealing element 10 is received in the form of a sealing ring.
  • connection section 22 is provided for attaching a fluid supply line through which the sucked-in fluid is supplied.
  • the two spindles 5, 6 are first used together with the coupling element 7, unless this is also possible later.
  • the feather key-like support element 16 is inserted into the two openings 15, whereupon the support ring 9 is pushed onto the first housing part 3, followed by the sealing ring 10, after which the second housing part 4 is pushed onto the first housing part 3. It is pushed until the slot-like recesses 20 are radially congruent with one or the two groove-like recesses 17, after which the clip-like or clasp-like fixing element 11 is pushed on from the side, so that one arm 23 in each case fits into the respective slot-like recess 20 and the groove-like recess 17 engages over which both housing parts axially are fixed to each other.
  • the fixing element is firmly anchored to the housing 2 in the assembly position. If at all, it can only be released from the clamp or snap fit with appropriate effort.
  • the second housing part 4 is supported radially on the support ring 9. At the same time, the second housing part 4 also extends radially over the two openings 15 with a collar 24 running adjacent to the collar 21, so that the feather key-like support element 16 is secured here.
  • the second housing part 4 has a dual function here. On the one hand, it serves as a securing element to fix the key-like support element 16 in a position, but on the other hand, it also provides the corresponding connection section 22.
  • the two housing parts 3, 4, like the support ring, are made of plastic; the sealing element 10 is a plastic or elastomer ring. Only the two spindles 5, 6 and the coupling element 7, the key-like support element 16 and the fixing element 11 are made of metal.
  • the structure is very simple, which has an advantageous effect on the manufacturing costs.
  • the screw spindle pump 1 is also very small in size, since the length of the spindles 5, 6 or their interlocking sections is in the range of only a few centimeters; they are preferably a maximum of 4 cm long, preferably also somewhat shorter, with a diameter of approximately 0.5 -1 cm, resulting in a very compact, small construct both axially and radially. Since the second housing part 4 overlaps the first housing part 3 over approximately half of its length and only the connecting section 22 protrudes further, this results in a very short overall length of the screw spindle pump with all components, viewed axially.
  • FIG. 3 shows a schematic diagram of a screw pump 1 according to the invention, with the same reference numbers being used for the same components.
  • a housing 2 is also provided here, but is made in one piece. In it, again, there are those that are only basically hinted at here Work spindle 5 and the running spindle 6 are recorded and axially supported via the feather key-like support element 16. This is in turn fixed with its two ends in two openings 15 on the housing 2 in the same manner as described above.
  • a union ring 25 is used here to fix the support element 16, which is in the same way as the second housing part 4 according to Figures 1 and 2 is fixed via the clip-like fixing element 11.
  • the union ring 25 also has two slot-like recesses 20, just as the housing 2 has one or two groove-like recesses 17, into which the corresponding arms 23 of the clip-like fixing element 11 engage. This means that the axial fixing takes place in the same way as that of the second housing part Fig. 1 .
  • the union ring 25 could also be screwed on.
  • a corresponding support ring 9 and the sealing element 10 are again provided, which serve for support and sealing.
  • a separate connecting piece component 26 is provided, which has an internally threaded section 27 which is screwed onto an externally threaded section 28 of the housing 2.
  • the connecting piece component 26 is screwed against the union ring 25, so that it is additionally axially fixed, as of course a corresponding distance can also be provided here and, if necessary, an additional sealing element or the like can also be provided between the union ring 25 and the connecting piece component 26.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Rotary Pumps (AREA)

Claims (21)

  1. Pompe à vis, réalisée pour refouler un liquide de refroidissement servant au refroidissement d'une batterie et/ou d'une électronique de puissance ou d'un groupe motopropulseur d'un véhicule automobile ou un liquide de nettoyage ou d'alimentation d'un véhicule automobile, comprenant un carter (2) dans lequel sont reçues une broche de travail (5) accouplée ou devant être accouplée à un groupe motopropulseur et au moins une broche de roulement (6) s'engrenant avec celle-ci, ainsi qu'un élément de support (16) de type clavette parallèle, qui est fixé côté carter et sur lequel la broche de travail et la broche de roulement (5, 6) sont supportées axialement, au moins un orifice (15) étant prévu sur le carter (2), orifice à travers lequel peut être inséré l'élément de support (16) qui, dans la position de montage, est reçu par une extrémité dans l'orifice (15) et par l'autre extrémité dans un logement (15) diamétralement opposé à l'orifice (15), l'élément de support (16) étant sécurisé par le biais d'au moins un élément de sécurité fermant l'orifice (15) extérieurement.
  2. Pompe à vis selon la revendication 1, caractérisée en ce que deux orifices (15) diamétralement opposés l'un à l'autre sont prévus, l'élément de support (16) étant reçu par ses deux extrémités dans les orifices (15) et étant sécurisé par le biais de l'élément de sécurité fermant les deux orifices extérieurement.
  3. Pompe à vis selon la revendication 1 ou 2, caractérisée en ce que le carter (2) présente une partie (14) cylindrique du côté extérieur, partie sur laquelle l'un des orifices ou les deux orifices (15) est/sont prévu(s), partie cylindrique (14) sur laquelle l'élément de sécurité est disposé ou peut être disposé.
  4. Pompe à vis selon l'une des revendications précédentes, caractérisée en ce que le carter (2) est en deux parties et présente une première partie de carter (3), dans laquelle la broche de travail et l'au moins une broche de roulement (5, 6) sont reçues, et une deuxième partie de carter (4) qui est disposée ou peut être disposée de manière amovible sur la première partie de carter (3) et qui présente une partie de raccordement (22) pour une conduite d'amenée de réfrigérant.
  5. Pompe à vis selon la revendication 4, caractérisée en ce que la deuxième partie de carter (4) est en même temps l'élément de sécurité.
  6. Pompe à vis selon l'une des revendications 1 à 3, caractérisée en ce que l'élément de sécurité est un anneau d'accouplement (25), et en ce qu'un composant de tubulure de raccordement (26) séparé est prévu, lequel est disposé ou peut être disposé de manière amovible sur le carter (2).
  7. Pompe à vis selon l'une des revendications 4 à 6, caractérisée en ce que les deux parties de carter (3, 4) ou le carter (2) et l'anneau d'accouplement (25) sont relié(e)s l'un(e) à l'autre de manière amovible par le biais d'au moins un élément de fixation (11) ou d'une liaison vissée.
  8. Pompe à vis selon la revendication 7, caractérisée en ce que l'élément de fixation (11) est une pince ou une agrafe qui vient en prise dans des évidements (20) et/ou des rainures (17) sur les deux parties de carter (3, 4) ou sur le carter (2) et l'anneau d'accouplement (25).
  9. Pompe à vis selon la revendication 8, caractérisée en ce qu'un ou plusieurs premiers évidements (20) de types fentes sont prévus sur la deuxième partie de carter (4) ou sur l'anneau d'accouplement (25), évidement(s) au(x)quel(s) un ou plusieurs deuxièmes évidements (17) de type rainures sont associés sur la première partie de carter (3) ou sur le carter (2), la pince ou l'agrafe devant être fixée sur la deuxième partie de carter (4) ou sur l'anneau d'accouplement (25), dans la position de montage, venant en prise à travers le premier évidement de type fente ou les plusieurs premiers évidements de types fentes (20) et venant en prise dans le deuxième évidement de type rainure ou les plusieurs deuxièmes évidements (17) de type rainures.
  10. Vis selon la revendication 9, caractérisée en ce que deux premiers et/ou deuxièmes évidements (17, 20) diamétralement opposés sont prévus.
  11. Pompe à vis selon l'une des revendications 4 à 10, caractérisée en ce qu'un anneau de support (9) est prévu, sur lequel la deuxième partie de carter (4) ou l'anneau d'accouplement (25) s'appuie ou celui-ci ou ceux-ci est/sont supporté(s) radialement sur la première partie de carter (3) ou sur le carter (2).
  12. Pompe à vis selon la revendication 11, caractérisée en ce que l'anneau de support (9) présente une surface d'appui conique (19) par laquelle il est supporté sur une surface de support conique (18) sur la première partie de carter (3) ou sur le carter (2).
  13. Pompe à vis selon l'une des revendications 4 à 12, caractérisée par au moins un élément d'étanchéité (10) réalisant d'étanchéité entre la première et la deuxième partie de carter (3, 4) ou l'anneau d'accouplement (25) et le carter (2).
  14. Pompe à vis selon la revendication 13, caractérisée en ce qu'une rainure ou collerette périphérique (21), dans laquelle l'élément d'étanchéité (10) se présentant sous la forme d'une bague d'étanchéité est reçu, est prévue sur la deuxième partie de carter (4) ou sur l'anneau d'accouplement (25) au niveau de la périphérie intérieure et/ou sur la première partie de carter (3) ou sur le carter (2) au niveau de la périphérie extérieure.
  15. Pompe à vis selon l'une des revendications précédentes, caractérisée en ce que les parties s'engrenant l'une avec l'autre de la broche de travail (5) et de l'au moins une broche de roulement (6) présentent une longueur d'au maximum 4 cm, en particulier d'au maximum 3 cm et d'au minimum 1 cm, en particulier d'au minimum 2 cm.
  16. Pompe à vis selon l'une des revendications précédentes, caractérisée en ce que les parties s'engrenant l'une avec l'autre de la broche de travail (5) et de l'au moins une broche de roulement (6) présentent un diamètre extérieur d'au maximum 1 cm et d'au minimum 0,5 cm.
  17. Pompe à vis selon l'une des revendications précédentes, caractérisée en ce qu'à l'extrémité côté entraînement de la broche d'entraînement (5) est prévue une géométrie de liaison à laquelle est relié de manière solidaire en rotation un élément d'accouplement (7) accouplé ou pouvant être accouplé au groupe motopropulseur.
  18. Pompe à vis selon l'une des revendications précédentes, caractérisée en ce que le carter (2), éventuellement la première et la deuxième partie de carter (3, 4) ou l'anneau d'accouplement (25), sont fabriqués à partir de matière synthétique.
  19. Utilisation d'une pompe à vis (1) selon l'une des revendications précédentes, dans un véhicule automobile pour le refoulement d'un liquide de refroidissement ou de nettoyage ou d'alimentation.
  20. Utilisation selon la revendication 19, caractérisée en ce que la pompe à vis (1) est utilisée pour refouler un liquide de refroidissement servant au refroidissement d'une batterie ou d'une électronique de puissance ou d'un groupe motopropulseur, en particulier d'un moteur à combustion interne ou d'une machine électrique.
  21. Véhicule automobile, comprenant au moins une pompe à vis (1) selon l'une des revendications 1 à 18.
EP20205416.9A 2019-12-02 2020-11-03 Pompe à vis Active EP3832137B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019132653.2A DE102019132653A1 (de) 2019-12-02 2019-12-02 Schraubenspindelpumpe

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EP3832137A1 EP3832137A1 (fr) 2021-06-09
EP3832137B1 true EP3832137B1 (fr) 2023-12-13

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EP20205416.9A Active EP3832137B1 (fr) 2019-12-02 2020-11-03 Pompe à vis

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US (1) US11371501B2 (fr)
EP (1) EP3832137B1 (fr)
JP (1) JP7019786B2 (fr)
KR (1) KR102386072B1 (fr)
CN (1) CN112983808B (fr)
DE (1) DE102019132653A1 (fr)
PL (1) PL3832137T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021133099A1 (de) 2021-12-14 2023-06-15 Leistritz Pumpen Gmbh Schraubenspindelpumpe
DE102021133112A1 (de) 2021-12-14 2023-06-15 Leistritz Pumpen Gmbh Schraubenspindelpumpe
DE102021133109A1 (de) 2021-12-14 2023-06-15 Leistritz Pumpen Gmbh Schraubenspindelpumpe

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3097359A (en) * 1963-07-09 Axial compressor
DE3800336A1 (de) * 1988-01-08 1989-07-27 Leistritz Ag Dichtungsfreie pumpe
US4934861A (en) * 1988-10-24 1990-06-19 The University Of Alabama Attachment apparatus for external stores on thin-wall poles
US6334733B1 (en) * 1998-12-07 2002-01-01 James William Tyson Pipe connector
GB2401397B (en) * 2003-05-08 2006-08-16 Automotive Motion Tech Ltd Pump assembly
DE102006032101A1 (de) * 2006-07-11 2008-01-24 Siemens Ag Fördereinheit zum Fördern von Kraftstoff
JP5353521B2 (ja) * 2009-07-22 2013-11-27 株式会社豊田自動織機 スクリューロータ
KR101641814B1 (ko) * 2012-04-12 2016-07-21 에머슨 클라이미트 테크놀로지스 (쑤저우) 코., 엘티디. 로터 펌프 및 로터 펌프를 포함하는 회전 기계
DE102014102390B3 (de) 2014-02-25 2015-03-26 Leistritz Pumpen Gmbh Schraubenspindelpumpe
JP2016114045A (ja) * 2014-12-18 2016-06-23 株式会社日本自動車部品総合研究所 スクリュポンプ
DE102015101443B3 (de) * 2015-02-02 2016-05-12 Leistritz Pumpen Gmbh Kraftstoffpumpe
JP2017048695A (ja) 2015-08-31 2017-03-09 株式会社デンソー スクリュポンプ
JP2017137824A (ja) * 2016-02-04 2017-08-10 株式会社Ｓｏｋｅｎ スクリュポンプ
DE102017210771B4 (de) 2017-06-27 2019-05-29 Continental Automotive Gmbh Schraubenspindelpumpe, Kraftstoffförderaggregat und Kraftstofffördereinheit
DE102017210770B4 (de) * 2017-06-27 2019-10-17 Continental Automotive Gmbh Schraubenspindelpumpe, Kraftstoffförderaggregat und Kraftstofffördereinheit
DE102017121882B3 (de) * 2017-09-21 2019-01-24 Leistritz Pumpen Gmbh Schraubenspindelpumpe
DE102018130472A1 (de) * 2018-11-30 2020-06-04 Nidec Gpm Gmbh Schraubenspindelpumpe

Also Published As

Publication number Publication date
JP2021088988A (ja) 2021-06-10
EP3832137A1 (fr) 2021-06-09
KR20210069562A (ko) 2021-06-11
PL3832137T3 (pl) 2024-04-29
CN112983808B (zh) 2023-07-14
DE102019132653A1 (de) 2021-06-02
CN112983808A (zh) 2021-06-18
JP7019786B2 (ja) 2022-02-15
US11371501B2 (en) 2022-06-28
US20210164466A1 (en) 2021-06-03
KR102386072B1 (ko) 2022-04-13

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