奥地利专利AT520633A4 Pump arrangement, axial flow machine and compressor

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专利摘要:
The invention relates to a pump arrangement (1), at least comprising a housing (3), in which an axial flow machine (2), as well as a for conveying a fluid (7) formed drive means (8) are mounted, wherein the axial flow machine is at least formed by at least one first rotor (4) with permanent magnets (22), a shaft (5) connected to the first rotor (4), and a stator arrangement (9), the shaft (5) having a shaft axis (6), and wherein the stator arrangement (9) has a plurality of stator teeth (14), which are distributed concentrically around the shaft axis (6) in the circumferential direction (10) and are separated from the first rotor (4) by an air gap (13) in the axial direction (12). which stator teeth (14) have two end sections opposite in the axial direction (12) and a tooth core (16) between the end sections and each tooth core (16) is wound with at least one coil winding (18), and wherein the second, the first rotor (4) a turned, end portion of each stator tooth (14) is designed as a tooth base (17) which is connected to a back plate (19), wherein the first rotor (4) as eccentric disc (20) is formed and on the stator assembly (9) facing away from of the first rotor (4) has an eccentric cam (21) which is arranged at a distance from the shaft axis (6) in the radial direction (11) and which is connected to the drive means (8) in a torque-transmitting and rotatable manner. Moreover, the invention relates to an axial flow machine (2) for a pump comprising said pump arrangement (1), and to a compressor for a refrigeration system comprising said pump arrangement (1).
公开号:AT520633A4
申请号:T50120/2018
申请日:2018-02-08
公开日:2019-06-15
发明作者:
申请人:Miba Sinter Austria Gmbh；
IPC主号:

专利说明:

Summary
The invention relates to a pump arrangement (1), at least comprising a housing (3), in which an axial flow machine (2) and a drive means (8) designed to convey a fluid (7) are mounted, the axial flow machine being at least formed by at least a first rotor (4) with permanent magnets (22), a shaft (5) connected to the first rotor (4), and a stator arrangement (9), the shaft (5) having a shaft axis (6), and the stator arrangement (9) has a plurality of stator teeth (14) which are distributed concentrically in the circumferential direction (10) around the shaft axis (6) and are arranged in the axial direction (12) from the first rotor (4) and are separated by an air gap (13), which stator teeth (14 ) have two end sections opposite each other in the axial direction (12) and between the end sections a tooth core (16) and each tooth core (16) is wrapped with at least one coil winding (18), and the second rotor facing away from the first rotor (4), End section of each stator tooth (14) is designed as a tooth base (17), which is connected to a back plate (19), the first rotor (4) being designed as an eccentric disc (20) and on the side of the first one facing away from the stator arrangement (9) The rotor (4) has an eccentric cam (21) which is arranged at a distance from the shaft axis (6) in the radial direction (11) and which is connected to the drive means (8) in a torque-transmitting and rotatable manner. Furthermore, the invention relates to an axial flow machine (2) for a pump comprising said pump arrangement (1), and to a compressor for a refrigeration system comprising said pump arrangement (1).
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The invention relates to a pump arrangement and an axial flow machine which has this pump arrangement, comprising at least one drive means for conveying a fluid, at least one rotor, and at least one stator arrangement connected to the at least one rotor via a shaft, which are mounted in a housing.
Nowadays, the overall size and total weight of the components are taken into account when designing pumps, compressors, but also electrical auxiliary drives. Especially in the automotive industry, but also in the consumer goods sector, it is desirable to reduce the required space and weight of a drive unit while maintaining or even increasing efficiency.
Known pump arrangements generally use an electric drive unit which is connected via a drive shaft to a drive means for a fluid, that is to say a liquid or gaseous medium. Depending on the liquid or gaseous medium to be pumped, various concepts, such as gear pumps, piston pumps, scroll pumps, or radial or centrifugal pumps, are used as drive means.
For use as a pump or compressor in automobiles and, in particular, cooling devices or as refrigeration compressors, a low overall height combined with high pump output and low energy consumption is crucial for economy. Known pump arrangements mentioned above often cannot meet these criteria.
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The object of the present invention was to overcome the disadvantages of the prior art and to provide a device by means of which a user is able to implement a simple pump arrangement which requires little space or takes up space. In addition, the energy requirements of the pump or the compressor can usually be reduced as a result.
This object is achieved by a device and a method according to the claims.
The device according to the invention comprises a pump arrangement, at least comprising a housing, in which an axial flow machine and a drive means designed to convey a fluid are mounted, the axial flow machine being formed at least by at least a first rotor, a shaft connected to the first rotor, and a Stator arrangement, wherein the shaft has a shaft axis, and wherein the stator arrangement has a plurality of stator teeth distributed concentrically in the circumferential direction around the shaft axis and arranged in the axial direction separated from the first rotor by an air gap, which stator teeth have two end sections lying axially opposite one another and between the end sections Have tooth core and each tooth core is wrapped with at least one coil winding, and wherein the second end portion facing away from the first rotor of each stator tooth is designed as a tooth base, which is connected to a back plate, wherein the first rotor is designed as an eccentric disk and on the side of the first rotor facing away from the stator arrangement has an eccentric cam which is arranged at a distance from the shaft axis in the radial direction and which is connected to the drive means in a torque-transmitting and rotatable manner.
By using an axial flow machine, the pump arrangement shown has a significant reduction in the overall height, compared to radial flow motors with the same drive power and / or the same efficiency.
The housing is a hermetically sealed component, which has various openings for the supply and discharge of fluids to be conveyed, electrical connections and the like. The / 32
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Drive means for conveying the fluid, at least one rotor, a stator arrangement, any bearing means and / or support means for the at least one rotor or the stator arrangement.
The pump arrangement according to the invention can be used in particular for compressors of a refrigeration system in mobile and / or stationary cooling devices. Such a compression refrigeration system usually comprises a compression or compression unit, a condenser, a throttle unit (e.g. capillary tube) and an evaporator. These components are known to the person skilled in the art and are therefore not explained further at this point. The pump arrangement presented is also suitable for piston pumps, centrifugal or radial pumps or such compressors. In the current application, if not necessary at a suitable point, all components of a pump or a compressor, such as cylinders, pistons, connecting rods, and the like, are combined as drive means.
Within the scope of the invention, gaseous media such as e.g. a refrigerant or air, but also liquid media such as Urea solutions, water or the like.
The pump arrangement according to the invention includes a stator arrangement which has a plurality of stator teeth which depends on the number of permanent magnets which are formed on or in the rotor arranged opposite one another in the axial direction. The stator or the stator arrangement is arranged symmetrically around the shaft, which is firmly connected to the at least one rotor. The bearing of the shaft is not further explained here, since various possibilities for forming bearing means are known to the person skilled in the art in order to be able to absorb axial and / or radial forces of the shaft. The stator teeth each have a tooth core, which has a tooth cross-sectional area normal to its extension in the axial direction. The stator teeth are attached to the back plate with an end section, namely the tooth base. For this purpose, the stator teeth can be fastened using a fastening means, e.g. a screw, or an adhesive connection to the back plate.
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Each stator tooth has a coil winding, which is wound around the tooth core and induces a magnetic field when energized. The coil windings are electrically isolated by insulation at least from the tooth core and the back plate.
Usually, to generate an eccentric movement, a shaft is set in rotation by means of a rotor and an eccentric disk or eccentric shaft is connected to the shaft. Known shaft-eccentric arrangements can be replaced in a simple manner by the inventive design of the first rotor as an eccentric disk, an eccentric cam being formed on the side of the rotor which faces away from the stator arrangement. To simplify the description, the shaft axis is used as a reference point around which the at least one rotor or the eccentric cam perform a circular movement. The eccentric cam should be at a suitable distance from the shaft in the radial direction and with the drive means, e.g. a connecting rod, be connected to transmit torque. The eccentric cam can be connected to the rotor by means of a fastening means, preferably welded, for the simultaneous formation of an eccentric disk.
With this pump arrangement, a significant reduction in the overall height can be achieved by using an axial flow motor in direct combination with the drive means. Furthermore, the arrangement described can reduce the weight, i.a. can be achieved by omitting an additional eccentric disc or an eccentric shaft.
Furthermore, it can be expedient if at least the first rotor has at least one compensating mass which is formed on the side facing away from the stator arrangement and is spaced apart from the shaft axis in the radial direction and is arranged essentially opposite the eccentric cam in the radial direction.
In contrast to conventional shaft eccentric arrangements, it is advantageous in the current pump arrangement if compensating masses are attached directly to the rotor / 32
N2017 / 36500-AT-00 are arranged. Advantageously, the at least one balancing mass is arranged essentially opposite one another in the radial direction of the eccentric cam, as a result of which the generation of vibrations, triggered by the rotor movement and the associated direct torque transmission to the drive means, can be reduced.
It can further be provided that the at least one balancing mass is formed from a plurality of balancing mass sections which are arranged separately from one another in the circumferential and / or radial direction.
Due to the need for free rotation of the rotor and associated components of the drive means, the height of the at least one compensating mass is limited in the axial direction. In order to ensure optimal vibration damping, the at least one balancing mass can therefore be divided into several parts or balancing mass sections, which causes the balancing mass to be distributed in the circumferential direction. This also enables the compensating mass sections to differ from one another in shape and size and to be individually adaptable to the geometry of the rotor-eccentric disc assembly. It is also conceivable that the balancing mass sections are arranged in such a way that adjacent balancing mass sections touch on at least one side surface, as a result of which a very compact arrangement can be achieved.
In addition, it can be provided that the at least one balancing mass has at least one recess, which is suitable for receiving at least one extension of the first rotor and / or at least one fastening means, and can be positively connected to the first rotor on its side facing away from the stator arrangement is trained.
Forming the at least one balancing mass with at least one recess enables a positive connection to the rotor to be implemented in a relatively simple manner. The at least one recess can be designed to penetrate the at least one recess in the axial direction. The rotor / 32
N2017 / 36500-AT-00 can, as a form and / or function complementary counterpart to the at least one recess, have extensions which, for example, Straps or hooks are formed. The at least one leveling compound can be e.g. Hooking into the extensions mentioned can be very easily attached to the rotor, and due to the orientation of the extensions pointing towards the central shaft axis, self-locking of the at least one balancing mass is brought about by centrifugal forces when the rotor moves.
However, it is also conceivable that the at least one recess serves as a through opening for receiving a fastening means which connects the at least one compensating mass to the rotor. For this purpose, e.g. Screws or rivets conceivable.
These types of connection of the at least one balancing mass make it possible to subsequently correct the shape and / or the weight by, for example, Grinding is possible in a very simple way, since the at least one balancing mass can be easily removed for this purpose and reattached to the rotor.
Also advantageous is a configuration according to which it can be provided that the first rotor and / or the eccentric cam and / or the at least one compensating mass are made in one piece.
The presence of a one-piece composite of rotor and / or eccentric cam and / or the at least one compensating mass can be achieved relatively easily by casting or sintering. This can promote the fatigue strength of the pump in that the interfaces between the rotor and / or eccentric cam and / or the at least one compensating mass are at least partially eliminated. Furthermore, there is no need for time-consuming and costly assembly steps which would be required for the arrangement and / or connection of the components mentioned with the first rotor.
According to a further development, it is possible for the eccentric cam and / or the at least one compensating mass to be formed from a material which / 32
N2017 / 36500-AT-00 differs from the material of the at least first rotor, in particular by a higher or lower density.
The first material for the manufacture of the rotor is, above all, various types of steel, and above all castable or forgeable steel types, or also sintered steel types. Metals and their alloys are preferably considered as the second material for the at least one leveling compound. However, the second material can also be a composite material. As a material composite, cohesive composites of two materials come into question, which e.g. by using a sintered leveling compound made of a first or second material, followed by infiltration through a third material with a lower melting point than the first or second material. Is the first material of the rotor e.g. Sintered steel, the balancing mass can be made of a first material e.g. Sintered steel, but with a defined porosity, the pores being made by a second material e.g. Copper / alloys are filled up. The second material of the balancing mass is thus formed from a composite material made of sintered steel and copper or a copper alloy with a higher density, as a result of which the balancing mass must have a small volume with the same weight in order to ensure functionality. This process can be called additive balancing. In certain cases, however, it may be advantageous to design the balancing mass with a lower density in order to achieve the opposite effect as described above, which is referred to as subtractive balancing. The great advantage of this procedure is that it is possible to carry out a targeted coordination between volume and / or geometry in relation to a required balancing mass in a relatively simple manner.
Leveling compounds made of nickel-based or cobalt-based alloys, or refractory metals such as e.g. Tungsten, molybdenum and their alloys imaginable to be used as a second material.
Furthermore, it can be expedient if at least the first rotor and / or the eccentric cam and / or the at least one compensating mass are designed as a sintered or cast component.
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The original shaping of the at least first rotor and / or the eccentric cam and / or the at least one compensating mass as a sintered or cast component makes it possible to set a geometry which already corresponds to the end geometry or at least comes very close to it. This means that any machining production steps can be omitted, even with complicated geometries. This enables a particularly cost-efficient component design and manufacture of a rotor and / or eccentric cam and / or balancing compound.
In addition, it can be provided that each tooth core has a core cross-sectional area and the first end portion of each stator tooth facing the first rotor is designed as a tooth head, the head cross-sectional area of which is larger than the core cross-sectional area.
The formation of a tooth head protruding beyond the tooth core in the radial and / or circumferential direction favors a magnetic flux guidance within the stator arrangement, since the tooth head acts as a flux collector. This enables higher torque and power densities. Furthermore, the required size of the stator arrangement or the pump arrangement in relation to stator teeth without a tooth head with an increased head cross-sectional area can be reduced in this way. The tooth base of the stator tooth can be at least partially received by the back plate, as a result of which a displacement in the radial and / or circumferential direction is avoided. It is advantageous to attach the stator teeth to the backplate by means of an adhesive connection and / or by means of a fastening means.
It can further be provided that the stator teeth and / or the back plate are made of a soft magnetic composite material.
Soft magnetic composite materials, also known as SMC (soft magnetic composites), have the property that they are magnetically isotropic. Stator teeth, i.e. tooth head, tooth core, and tooth base, and / or the back plate can be made from the same SMC, thereby reducing eddy current losses. The back plate can thus serve as a back plate to form a magnetic connection. In particular / 32
N2017 / 36500-AT-00 favors the formation of the stator teeth and / or the backplate or backplate made of SMC in the form of a powder composite material, the production of complex geometries by e.g. Sintering processes, which increases the freedom of design and the size of the pump arrangement can be reduced.
According to a special embodiment, it is possible for the stator teeth and the back plate to be formed in one piece.
The back plate functions as a magnetic yoke in all of the above-mentioned embodiments of this invention. Due to the one-piece design, interface effects between the tooth base and the backflow plate can be reduced, as a result of which the power density of the stator arrangement can be increased.
According to an advantageous development, it can be provided that the drive means comprises a flat piston.
For the delivery or compression of a fluid, the above-mentioned drive means, such as for the formation of positive displacement pumps, e.g. Piston and gear arrangements or also flow pumps such as Impeller arrangements, or also radial or centrifugal pumps, are used. The design of the piston of the drive means as a flat piston can further reduce the overall height of the pump arrangement. The flat side of the flat piston is advantageously guided essentially parallel to the first rotor.
In particular, it can be advantageous if a second rotor is connected via the shaft to the first rotor having the eccentric cam and the stator arrangement is arranged between the first and second rotor, and is distributed concentrically in the circumferential direction around the shaft axis and faces the second rotor in the axial direction , Additional stator teeth, separated from the second rotor by an air gap, are connected at the tooth base to the back plate.
This embodiment according to the invention can thus be simplified as a stator arrangement with stator teeth protruding on both sides from the rear plate
N2017 / 36500-AT-00 stand, whereby on both sides a first or second rotor is arranged on the common shaft separated from the stator arrangement by an air gap. By forming a second rotor, which, like the first rotor, has a plurality of permanent magnets, it is possible to achieve a substantially contactless mounting of the rotors relative to the stator arrangement. Furthermore, an increase in the power and / or torque density can be achieved by using a second rotor with corresponding stator teeth on the rear plate. As a result, the necessary diameter of the axial flow machine can be reduced, which can contribute to compacting the construction of the pump arrangement.
The invention further comprises an axial flow machine for a pump comprising a housing, in which at least a first rotor, a shaft connected at least to the first rotor, a drive means designed to convey a fluid, and a stator arrangement are mounted, which as a pump arrangement according to one of the claims 1 to 12 are formed.
The axial flow machine for a pump or compressor has in particular at least one first rotor with permanent magnets, a shaft connected to the first rotor, and a stator arrangement, the shaft having a shaft axis, and the stator arrangement having a plurality of circumferentially around the shaft axis concentrically distributed and in the axial direction from the first rotor separated by an air gap stator teeth, the stator teeth have two axially opposite end sections and between the end sections a tooth core and each tooth core is wound with at least one coil winding, and wherein the second, facing away from the first rotor , End portion of each stator tooth is designed as a tooth base, which is connected to a back plate, wherein the first rotor is designed as an eccentric disk and on the side of the first rotor facing away from the stator arrangement, one of the shaft axis in the radial direction bea has arranged eccentric cam, which is connected to the drive means in a torque-transmitting and rotatable manner.
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For a better understanding of the invention, this will be explained in more detail with reference to the following figures.
Each show in a highly simplified, schematic representation:
Fig. 1 Section through an embodiment for a pump arrangement or axial flow machine; Fig. 2 Oblique views of exemplary embodiments for a rotor with an eccentric cam arranged thereon and (a) one-part balancing mass, (b) with several balancing mass sections, and (c) a sectional view with several detachably mounted balancing mass sections; Fig. 3 Sectional view through exemplary embodiments for stator arrangements with (a) stator teeth fixed to the backplate by a fastening means, or (b) with one-piece stator teeth and backplate; Fig. 4 Section through an embodiment for a pump arrangement orAxial flow machine with stator teeth with tooth head; Fig. 5 Sectional representation of an exemplary embodiment for a pump arrangement or axial flow machine with stator teeth arranged on both sides on the rear plate and respectively opposite first and second rotors.
In the introduction, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numerals or the same component names, and the disclosures contained in the entire description can be applied analogously to the same parts with the same reference numerals or the same component names. The location information selected in the description, e.g. above, below, to the side, etc., referring to the figure described and illustrated immediately, and if the position is changed, these are to be applied accordingly to the new position.
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1 shows an exemplary embodiment of a pump arrangement 1 according to the invention with an axial flow machine 2. The schematically illustrated pump arrangement 1 comprises a housing 3, which is designed as a closed vessel and is only broken through by any connection or outlet openings for a fluid 7, electrical contacts, etc. The pump arrangement includes a drive means 8, which is shown in simplified form in the exemplary embodiment as a piston pump. The piston 36, a round piston in the illustration, is operatively connected by the movement of the eccentric cam 21 via a connecting rod 31 and conveys or compresses the fluid 7 to be conveyed into a cylinder. The functionality of a pump or compressor, as well as its structural requirements, are sufficiently well known to the person skilled in the art, which is why a detailed description of this is omitted below.
Also arranged in this housing 3 is at least one stator arrangement 9, comprising a plurality of stator teeth 14 which are distributed concentrically in the circumferential direction 10 about the shaft axis 6 of the shaft 5 and are separated in the axial direction 12 from a first rotor 4 by an air gap 13. The stator teeth 14 have two opposite end sections in the axial direction 12 and a tooth core 16 between the end sections, each tooth core 16 being wrapped with at least one coil winding 18. The second end section, facing away from the first rotor 4, of each stator tooth 14 is designed as a tooth base 17 and is connected to a back plate 19. In this arrangement, the back plate 19 serves as a magnetic yoke and favors the formation of a magnetic field when the coil winding 18 is energized.
Furthermore, FIG. 1 clearly shows that the first rotor 4 is equipped on its side facing the stator arrangement 9 with permanent magnets 22, which lead to a rotation of the first rotor 4 when a magnetic field is generated by energizing the coil windings 18. An eccentric cam 21 is arranged on the side of the first rotor 4 which faces away from the stator arrangement 9, as a result of which the first rotor 4 is designed as an eccentric disk 20. The drive means 8 is connected to the eccentric cam 21 in a torque-transmitting and rotatable manner.
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Furthermore, it can be seen from FIG. 1 that any bearings 32 shown as examples for receiving radial and / or axial forces can be arranged on the shaft 5 or on the housing 3. Support means 35 are also indicated schematically, which e.g. favor vibration damping of the axial flow machine 2 as spring elements.
2a to 2c illustrate some possible exemplary embodiments for an embodiment of the first rotor 4 according to the invention with an eccentric cam 21 arranged thereon, as well as a balancing mass 23 or balancing mass sections 24. The balancing mass 23 or the balancing mass sections 24 can be firmly connected to the first rotor 4 his. Such a fixed connection can take the form of an adhesive, soldered or welded connection.
Within the scope of the invention, the at least one balancing mass 23 or the balancing mass sections 24 of FIGS. 2a to 2c can also be detachably and positively e.g. via an at least temporary fixation by means of a fastening means 26, or a hooking connection. The fastening means 26 can be designed analogously to the fastening of the stator teeth 14 to the back plate 19 shown in FIG. 3a, and will be described further below. The detachable connection of the at least one balancing mass 23 or the balancing mass sections 24 allows the individual balancing masses 23 or the balancing mass sections 24 to be reworked in order to minimize imbalance on the eccentric disc 20 or the first rotor 4.
FIG. 2a shows an example of a rotor 4 according to the invention with a balancing mass 23 arranged essentially opposite the eccentric cam 21 in the radial direction 11. The shape of the balancing mass 23 shown in FIG. 2a is essentially kidney-shaped in order to adapt as well as possible to the radius of the first rotor 4. However, rectangular, circular, or elliptical shapes for the at least one balancing mass 23 or balancing mass sections 24 are equally well conceivable and transferable to the embodiments shown in FIGS. 2b and 2c.
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Another possibility for fastening the balancing mass 23 or the individual balancing mass sections 24 is indicated schematically in FIG. 2c. In this case, the at least one balancing mass 23 or the balancing mass sections 24 have at least one recess 25 which, in the arrangement shown, extends continuously through the balancing mass sections 24 in the axial direction 12. The first rotor 4 has extensions 27 which are complementary in shape and function to the recesses 25 and which are designed as hooks or tabs. The at least one balancing mass 23 or the balancing mass sections 24 can be attached thereto by hooking in and form a releasable and form-fitting connection to the first rotor 4.
2c shows an example of a rotor 4 according to the invention with balancing mass sections 24 arranged essentially opposite to the eccentric cam 21 in the radial direction 11. These are arranged separately from one another in the circumferential direction 10 and spaced apart in the radial direction 11 with essentially the same distance from the shaft axis 6. The connection variants mentioned above can be applied analogously, even if not shown, to this embodiment.
3a and 3b show sectional representations through exemplary embodiments of stator arrangements 9, as can preferably be formed in the pump arrangement according to the invention. The stator teeth 14 comprise at least a first end section which is designed as a tooth head 15 with a head cross-sectional area which extends normal to the axial direction 12. Furthermore, the stator teeth 14 each comprise a tooth core 16 which extends between the first and the second end section formed by a tooth base 17. The tooth core 16 has a tooth cross-sectional area which extends normal to the axial direction 12 and is smaller than the head cross-sectional area.
3a schematically shows stator teeth 14 which are connected to the back plate 19 via the tooth base 17. As can be seen in the sectional view, the stator tooth 14 is segmented from the tooth head 15 and a one-piece tooth core 16 with a tooth base 17. The stator tooth 14 has a fastening means receptacle 37 which extends at least through the stator tooth / 32
N2017 / 36500-AT-00 extends continuously in the axial direction 12 and is suitable for receiving a fastening means 26. The fastening means 26 can be a rivet, a screw, or the like. The fastening means 26 connects the stator tooth 14 to the back plate 19, which serves as an abutment. Analogous to this form of connection, the at least one balancing mass 23 or balancing mass sections 24 can be fastened to the first rotor 4 by means of a fastening means 26 via their recesses 25.
It is further shown in FIGS. 3a and 3b that the tooth core 16 is wrapped by a coil winding 18 and that electrical insulation 34 is arranged at least in between, as well as between the tooth head 15 and the coil winding 18.
3b shows an example of an embodiment, the connection between stator teeth 14 and the back plate 19 being omitted since they are formed in one piece. A separate representation of one-piece stator teeth 14, which are connected to the back plate 19, is omitted here. 1, 3a and 3b, or FIGS. 4 and 5, in order to open up possible further embodiments in between.
Furthermore, the stator teeth 14 and / or the back plate 19 shown in FIGS. 1 and 3 to 5 can be made of a soft magnetic composite material, or also SMC.
FIG. 4 shows a further and possibly independent embodiment of the pump arrangement 1 or the axial flow machine 2 according to the invention, again using the same reference numerals or component designations for the same parts as in the previous FIGS. 1 to 3. In order to avoid unnecessary repetitions, reference is made to the detailed description in the previous figures. The drive means 8 shown in FIG. 4 comprises a flat piston 28 which is guided in a cylinder of the pump or the compressor. It can further be seen from FIG. 4 that the stator arrangement 9 corresponds to the above / 32
N2017 / 36500-AT-00, and shown by way of example in FIGS. 3a and 3b, can have stator teeth 14 with a tooth head 15 protruding beyond the tooth core 16. In the illustration in FIG. 4, the stator teeth 14 are in one piece, for example, and at least partially received on the tooth base 17 by the back plate 19. The stator teeth 14 are fixed on the back plate 19 by means of an additional fastening means 26. Not shown, but in conjunction with this embodiment, is a one-piece design of the stator teeth 14 and the back plate, which can have advantages with regard to magnetic flux guidance and power density. The other features shown are to be considered analogously to FIG. 1, which is why repetition at this point is avoided.
FIG. 5 shows an exemplary embodiment of a pump arrangement 1 according to the invention, in which a second rotor 33 is formed in addition to the first rotor 4. The second rotor 33 is connected to the first rotor 4 via the shaft 5, it being possible for the first rotor 4 to have been formed in the previous embodiments. In the selected sectional view, a compensating mass 23 is shown as an example on the first rotor 4, which is arranged opposite the eccentric cam 21. The first 4 and second rotor 33 are each separated by an air gap 13 from the stator teeth 14 which are arranged opposite each other in the axial direction 12. The permanent magnets 22 arranged on the first 4 and second rotor 33 are aligned parallel to the tooth heads 15.
As can be seen very well in FIG. 5, the stator teeth 14 can be formed on the back plate 19 in the axial direction 12 pointing towards the first rotor 4 or pointing towards the second rotor 33. Especially in this pump arrangement 1 with two rotors 4,33, it is not necessary for the back plate 19 to be magnetic, whereas this is advantageous in the previous exemplary embodiments. When the coil windings 18 are energized, the two rotors 4, 33 are set in motion. The drive means 8 of the pump arrangement 1, which is connected via the first rotor 4 designed as an eccentric disk 20, enables the delivery or compression of a fluid 7.
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The stator teeth 14 of the stator arrangement 9 are in the manner described above at least partially received by the back plate 19 and fastened by means of an adhesive connection. Additional fastening means 26, as explained above in FIGS. 2 to 4, can be used to improve the fixation of the stator teeth 14. In Fig. 5, therefore, only the fastener receptacles 37 are shown. A detailed description is not repeated here. The further embodiment, not shown, of one-piece stator teeth 14, which extend on both sides in the axial direction 12 from the back plate 19, pointing towards the first rotor 4 or pointing towards the second rotor 33, should be mentioned at this point as a further conceivable variant.
5, a bearing 32 is indicated only schematically as a radial bearing of the shaft 5. Suitable bearings for absorbing radial and / or axial forces are known to the person skilled in the art. All of the above-mentioned exemplary embodiments can therefore have at least one radial and / or axial bearing, which, however, are not the subject of the invention here and are therefore not dealt with further.
The pump arrangements shown in FIGS. 1 to 5 can also be used as compressors of a refrigeration system in mobile and / or stationary cooling devices. Such a compression refrigeration system according to the invention is not shown, but usually comprises a condenser, a throttle unit (e.g. capillary tube) and an evaporator, as well as a compression or compression unit, which is designed according to one of the above examples.
The exemplary embodiments show possible design variants, it being noted at this point that the invention is not limited to the specially illustrated design variants of the same, but rather also various combinations of the individual design variants with one another are possible and this variation possibility is based on the teaching of technical action through the present invention Ability of the specialist working in this technical field.
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The scope of protection is determined by the claims. However, the description and drawings are to be used to interpret the claims. Individual features or combinations of features from the different exemplary embodiments shown and described can represent independent inventive solutions. The object on which the independent inventive solutions are based can be found in the description.
All information on value ranges in the objective description is to be understood so that it includes any and all sub-areas, e.g. the information 1 to 10 is to be understood so that all sub-areas, starting from the lower limit 1 and the upper limit 10, are included, i.e. all sections start with a lower limit of 1 or greater and end with an upper limit of 10 or less, e.g. 1 to 1.7, or 3.2 to 8.1, or
5.5 to 10.
For the sake of order, it should finally be pointed out that, for a better understanding of the structure, elements have sometimes been shown to scale and / or enlarged and / or reduced.
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LIST OF REFERENCE NUMBERS
1 pump assembly 31 pleuel 2 axial flow 32 camp 3 casing 33 second rotor 4 first rotor 34 insulation 5 wave 35 proppant 6 shaft axis 36 piston 7 fluid 37 Mounting borrowing 8th drive means 9 stator 10 circumferentially 11 radial direction 12 axially 13 air gap 14 Stator / -zähne 15 addendum 16 toothed core 17 tooth root 18 coil winding 19 backplate 20 eccentric 21 eccentric cam 22 permanent magnet 23 Leveling compound 24 Leveling compound section 25 recess 26 fastener 27 extension 28 flat shank 29 inlet 30 outlet
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权利要求:
Claims (14)
[1]
claims
1. Pump arrangement (1), at least comprising a housing (3), in which an axial flow machine (2) and a drive means (8) designed to convey a fluid (7) are mounted, the axial flow machine being formed by at least a first one Rotor (4) with permanent magnets (22), a shaft (5) connected to the first rotor (4), and a stator arrangement (9), the shaft (5) having a shaft axis (6), and the stator arrangement (9 ) has a plurality of stator teeth (14) which are distributed concentrically in the circumferential direction (10) around the shaft axis (6) and are arranged in the axial direction (12) from the first rotor (4) by an air gap (13), which stator teeth (14) have two End sections lying opposite in the axial direction (12) and between the end sections have a tooth core (16) and each tooth core (16) is wrapped with at least one coil winding (18), and the second end section facing away from the first rotor (4) rzahns (14) is designed as a tooth base (17), which is connected to a back plate (19), characterized in that the first rotor (4) is designed as an eccentric disc (20) and on the side of the The first rotor (4) has an eccentric cam (21) which is arranged at a distance from the shaft axis (6) in the radial direction (11) and which is connected to the drive means (8) in a torque-transmitting and rotatable manner.
[2]
2. Pump arrangement (1) according to claim 1, characterized in that at least the first rotor (4) has at least one balancing mass (23) which is formed on the side facing away from the stator arrangement (9) and from the shaft axis (6) in the radial direction (11 ) is spaced and the eccentric cam (21) is arranged in the radial direction (11) substantially opposite.
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[3]
3. Pump arrangement (1) according to claim 1 or 2, characterized in that the at least one balancing mass (23) is formed from a plurality of balancing mass sections (24) which are arranged separately from one another in the circumferential (10) and / or radial direction (11).
[4]
4. Pump arrangement (1) according to one of the preceding claims, characterized in that the at least one balancing mass (23) has at least one recess (25) which for receiving at least one extension (27) of the first rotor (4) and / or at least one fastening means (26) is suitable, and can be connected to the first rotor (4) on its side facing away from the stator arrangement (9) in a form-fitting manner.
[5]
5. Pump arrangement (1) according to one of the preceding claims, characterized in that the first rotor (4) and / or the eccentric cam (21) and / or the at least one compensating mass (23) are made in one piece.
[6]
6. Pump arrangement (1) according to one of the preceding claims, characterized in that the eccentric cam (21) and / or the at least one balancing mass (23) is formed from a material which is different from the material of the at least first rotor (4), in particular by distinguishes a higher density.
[7]
7. Pump arrangement (1) according to one of the preceding claims, characterized in that at least the first rotor (4) and / or the eccentric cam (21) and / or the at least one compensating mass (23) are designed as sintered or cast components.
[8]
8. Pump arrangement (1) according to one of the preceding claims, characterized in that each tooth core (16) has a core cross-sectional area and the first, the first rotor (4) facing, end portion of each
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Stator tooth (14) is designed as a tooth head (15) whose head cross-sectional area is larger than the core cross-sectional area.
[9]
9. Pump arrangement (1) according to one of the preceding claims, characterized in that the stator teeth (14) and / or the back plate (19) are made of a soft magnetic composite material.
[10]
10. Pump arrangement (1) according to one of the preceding claims, characterized in that the stator teeth (14) and the back plate 19 are formed in one piece.
[11]
11. Pump arrangement (1) according to one of the preceding claims, characterized in that the drive means (8) comprises a flat piston (28).
[12]
12. Pump arrangement (1) according to one of the preceding claims, characterized in that a second rotor (33) via the shaft (5) with the first, the eccentric cam (21) having rotor (4) is connected and the stator arrangement (9) is arranged between the first (4) and the second rotor (33), and additionally distributed by the second rotor (33) in the circumferential direction (10) concentrically around the shaft axis (6) and facing the second rotor (33) in the axial direction (12). stator teeth (14), which are arranged separately by an air gap (13), are connected to the back plate 19 at the tooth base (17) thereof.
[13]
13. Axial flow machine (2) for a pump comprising a housing (3), wherein at least a first rotor (4), a shaft (5) connected at least to the first rotor (4), a drive means designed to convey a fluid (7) (8) and a stator arrangement (9) are mounted, which are designed as a pump arrangement (1) according to one of claims 1 to 12.
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N2017 / 36500 AT-00
[14]
14. Compressor for use in a refrigeration system, characterized in that a compression unit is designed as a pump arrangement (1) according to one of claims 1 to 12.
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C l
Miba Sinter Austria GmbH
25/32
4.20
26/32
27/32
C l
Miba Sinter Austria GmbH
28/32
2.1
Miba Sinter Austria GmbH
29/32
claims
1. Pump arrangement (1), at least comprising a housing (3), in which an axial flow machine (2) and a drive means (8) designed to convey a fluid (7) are mounted, the axial flow machine being formed by at least a first one Rotor (4) with permanent magnets (22), a shaft (5) connected to the first rotor (4), and a stator arrangement (9), the shaft (5) having a shaft axis (6), and the stator arrangement (9 ) has a plurality of stator teeth (14) which are distributed concentrically in the circumferential direction (10) around the shaft axis (6) and are separated from the first rotor (4) by an air gap (13) in the axial direction (12), the first rotor (4) is designed as a disk (20) and on the side of the first rotor (4) facing away from the stator arrangement (9) has a front crank (21) which is spaced from the shaft axis (6) in the radial direction (11) and which is connected to the drive means (8) torque transmitting and rotatable ve rbunden, characterized in that the stator teeth (14) have two opposite end sections in the axial direction (12) and between the end sections a tooth core (16) and each tooth core (16) is wrapped with at least one coil winding (18), the second, End section of each stator tooth (14) facing away from the first rotor (4) is designed as a tooth base (17) which is connected to a back plate (19) and that the stator teeth (14) and / or the back plate (19) are made of a soft magnetic Composite material are made.
2. Pump arrangement (1) according to claim 1, characterized in that at least the first rotor (4) has at least one balancing mass (23) which is formed on the side facing away from the stator arrangement (9) and from the shaft axis (6) in the radial direction (11 ) is spaced and the end crank (21) is arranged in the radial direction (11) substantially opposite.
[LAST CLAIMS]
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A2018 / 50120 AT-00
3. Pump arrangement (1) according to claim 2, characterized in that the at least one balancing mass (23) is formed from a plurality of balancing mass sections (24) which are arranged separately from one another in the circumferential (10) and / or radial direction (11).
4. Pump arrangement (1) according to claim 2 or 3, characterized in that the at least one balancing mass (23) has at least one recess (25) which for receiving at least one extension (27) of the first rotor (4) and / or of at least one fastening means (26) is suitable, and is designed such that it can be connected to the first rotor (4) on its side facing away from the stator arrangement (9) in a form-fitting manner.
5. Pump arrangement (1) according to one of claims 2 to 4, characterized in that the first rotor (4) and / or the front crank (21) and / or the at least one balancing mass (23) are made in one piece.
6. Pump arrangement (1) according to one of claims 2 to 5, characterized in that the end crank (21) and / or the at least one balancing mass (23) is made of a material which is different from the material of the at least first rotor (4) , especially by a higher density.
7. Pump arrangement (1) according to one of claims 2 to 6, characterized in that at least the first rotor (4) and / or the front crank (21) and / or the at least one balancing mass (23) are designed as sintered or cast components ,
8. Pump arrangement (1) according to one of the preceding claims, characterized in that each tooth core (16) has a core cross-sectional area and the first end section of each stator tooth (14) facing the first rotor (4) is designed as a tooth head (15), whose head cross-sectional area is larger than the core cross-sectional area.
[LAST CLAIMS]
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A2018 / 50120 AT-00
9. Pump arrangement (1) according to one of the preceding claims, characterized in that the stator teeth (14) and the back plate 19 are formed in one piece.
10. Pump arrangement (1) according to one of the preceding claims, characterized in that the drive means (8) comprises a flat piston (28).
11. Pump arrangement (1) according to one of the preceding claims, characterized in that a second rotor (33) via the shaft (5) with the first, the end crank (21) having rotor (4) is connected and the stator arrangement (9 ) is arranged between the first (4) and the second rotor (33), and additionally distributed by the second rotor (33) in the circumferential direction (10) about the shaft axis (6) and concentrically in the axial direction (12) facing the second rotor (33) ) by an air gap (13) separately arranged stator teeth (14) at the tooth base (17) of which are connected to the back plate 19.
12. Compressor for use in a refrigeration system, characterized in that a compression unit is designed as a pump arrangement (1) according to one of claims 1 to 11.
[LAST CLAIMS]
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A2018 / 50120 AT-00

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同族专利:

公开号 | 公开日

BR102019002694A2|2019-10-15|

CN110131126A|2019-08-16|

CN110131126B|2021-03-09|

US11264866B2|2022-03-01|

AT520633B1|2019-06-15|

US20190242393A1|2019-08-08|

DE102019000663A1|2019-08-08|

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FR3046888B1|2016-01-14|2021-10-22|Whylot|STATOR FOR ELECTROMAGNETIC AXIAL FLOW MACHINE WITH UNIT PORTIONS FORMING A STATOR CROWN|

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CN107294325A|2017-06-28|2017-10-24|华中科技大学|A kind of subregion stator disc type double salient-pole electric machine|EP3331140A1|2016-12-02|2018-06-06|Miba Sinter Austria GmbH|Disc motor|

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法律状态:

优先权:

申请号 | 申请日 | 专利标题

ATA50120/2018A|AT520633B1|2018-02-08|2018-02-08|Pump arrangement, axial flow machine and compressor|ATA50120/2018A| AT520633B1|2018-02-08|2018-02-08|Pump arrangement, axial flow machine and compressor|

US16/211,663| US11264866B2|2018-02-08|2018-12-06|Pump arrangement, axial-flow machine and compressor comprising at least one rotor having permanent magnets and a stator having a multiplicity of teeth separated from each other wherein the tooth tip has a substantially rectangular-shaped cross section|

CN201811531368.5A| CN110131126B|2018-02-08|2018-12-14|Pump system, axial flux motor and compressor|

DE102019000663.1A| DE102019000663A1|2018-02-08|2019-01-31|Pump arrangement, axial flow machine and compressor|

BR102019002694-4A| BR102019002694A2|2018-02-08|2019-02-08|PUMP ARRANGEMENT, AXIAL FLOW MACHINE AND COMPRESSOR|

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