SI26296A - Stator with cooling system and electrical machine with said stator - Google Patents
Stator with cooling system and electrical machine with said stator Download PDFInfo
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- SI26296A SI26296A SI202100220A SI202100220A SI26296A SI 26296 A SI26296 A SI 26296A SI 202100220 A SI202100220 A SI 202100220A SI 202100220 A SI202100220 A SI 202100220A SI 26296 A SI26296 A SI 26296A
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- base
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/24—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/08—Insulating casings
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Stator z notranjim hladilnim sistemom po izumu je sestavljen iz: osnove statorja, obroča statorja, vsaj enega rebra statorja, pri čemer je med vsakima sosednjima rebroma statorja je izdelana vrzel, v katero je vstavljeno feromagnetno jedro okrog katerega je navit električni prevodnik, prednostno bakrena žica, kar tvori navitje, vložka statorja in plošča vložka statorja, ki skupaj z obročem statorja definirata pot hladilnega medija v obliki vsaj enega hladilnega kanala, vsaj ene vstopne in vsaj ene izstopne točke za hladilni medij, ki sta povezani z vsaj enim hladilnim kanalom, ki se ovija okoli navitij, in sicer prednostno okoli navitij navzdol proti notranjemu radiju v smeri sredine osi elektromotorja (radialna smer), nato na spodnjem delu navitij (notranji radij statorja) tangencialno, kjer naredi ovinek in spet nadaljuje radialno navzgor, kjer na zunanjem radiju osnove statorja zavije v tangencialni smeri osi na naslednji del navitja in spet nadaljuje navzdol radialno.The stator with an internal cooling system according to the invention consists of: the base of the stator, the ring of the stator, at least one rib of the stator, whereby a gap is made between each adjacent rib of the stator, into which a ferromagnetic core is inserted, around which an electrical conductor, preferably a copper wire, is wound , which forms the winding, the stator insert and the stator insert plate, which, together with the stator ring, define the path of the cooling medium in the form of at least one cooling channel, at least one entry and at least one exit point for the cooling medium, which are connected to at least one cooling channel, which wraps around the windings, preferably around the windings down towards the inner radius in the direction of the center of the electric motor axis (radial direction), then tangentially at the lower part of the windings (inner radius of the stator), where it makes a bend and continues radially upwards again, where at the outer radius of the base turns the stator in the tangential direction of the axis to the next part of the winding and again continues down radially.
Description
Stator s hladilnim sistemom in električni stroj z omenjenim statorjemA stator with a cooling system and an electric machine with said stator
Področje tehnikeThe field of technology
Izum spada na področje električnih strojev, natančneje na področje statorjev. Izum se nanaša na stator za električni stroj z učinkovitim notranjim hladilnim sistemom.The invention belongs to the field of electrical machines, more precisely to the field of stators. The invention relates to a stator for an electric machine with an efficient internal cooling system.
Ozadje izuma in tehnični problemBackground of the Invention and Technical Problem
Električni stroji so naprave, ki delujejo v dveh možnih načinih; za pogon kjer pretvarjajo električno energijo v mehansko ali pa kot generatorji, kjer pretvarjajo mehansko energijo v električno. Lahko se uporabljajo v aplikacijah na področju industrije za pogon naprav v proizvodnjih procesih, gospodinjskih aparatih, čedalje bolj pa se uveljavljajo tudi za pogon električnih in hibridnih vozil. Obstaja več vrst konstrukcijske izvedbe aksialnih električnih strojev, kot so opisani v patentni prijavi EP3485558. Stroj ima lahko a) en stator in en rotor ali b) en rotor in dva statorja, ali c) dvojni rotor in en stator ali d) več-stopenjski stroj.Electrical machines are devices that operate in two possible modes; for propulsion, where they convert electrical energy into mechanical energy, or as generators, where they convert mechanical energy into electrical energy. They can be used in applications in the field of industry to drive devices in production processes, household appliances, and are increasingly being used to drive electric and hybrid vehicles. There are several types of construction of axial electric machines, as described in patent application EP3485558. The machine may have a) one stator and one rotor, or b) one rotor and two stators, or c) a double rotor and one stator, or d) a multi-stage machine.
Električni stroji, predvsem stroji brez jarma, imajo zaradi kompaktne izvedbe in visoke moči glede na volumen stroja težave z odvajanjem generirane toplote med delovanjem stroja. Konstrukcija mora biti zasnovana tako, da stroj med delovanjem ustvarja čim manj izgub, predvsem vrtinčnih tokov v sestavnih delih električnega stroja, hkrati pa mora oblika konstrukcije stroja vsebovati hladilni sistem, ki čim bolj učinkovito odvaja nastalo toploto med delovanjem.Due to their compact design and high power relative to the volume of the machine, electric machines, especially machines without a yoke, have problems with dissipating the generated heat during machine operation. The construction must be designed in such a way that the machine creates as few losses as possible during operation, especially eddy currents in the components of the electrical machine, and at the same time, the design of the machine must contain a cooling system that dissipates the heat generated during operation as efficiently as possible.
Tehnični problem, ki ga pričujoči izum rešuje, je konstrukcijska zasnova statorja s hladilnim sistemom, ki bo učinkovito odvajal toploto med delovanjem električnega stroja, v katerega bi bil vgrajen omenjeni stator.The technical problem that the present invention solves is the structural design of the stator with a cooling system that will efficiently dissipate heat during the operation of the electric machine in which the mentioned stator would be installed.
Stanje tehnikeState of the art
Različne izvedbe električnih strojev, hlajenja in izdelave le-teh so opisane v patentnih prijavah EP1901418, GB 2580920, EP3485558 (evropska faza mednarodne prijave WO2018015293A1), WO2010/092400, WO2015124922 in EP3764526A1.Various implementations of electric machines, cooling and their production are described in patent applications EP1901418, GB 2580920, EP3485558 (European phase of international application WO2018015293A1), WO2010/092400, WO2015124922 and EP3764526A1.
V rešitvi opisani v patentni prijavi EP1901418 je hlajenje izvedeno tako, da hladilni medij potuje po cevkah, ki so pozicionirane po obodu električnega stroja. Pri tem pa hladilni medij ne odvaja učinkovito toplote iz najbolj gretih delov električnega stroja (navitja), saj z njimi nima nepostrednega kontakta, površina za odvajanje toplote, ki je v stiku z navitji pa je majhna.In the solution described in patent application EP1901418, the cooling is carried out in such a way that the cooling medium travels through tubes positioned around the perimeter of the electric machine. In this case, the cooling medium does not effectively remove heat from the hottest parts of the electrical machine (windings), as it does not have direct contact with them, and the surface for heat removal that is in contact with the windings is small.
Patentna prijava GB2580920 razkriva stator, kjer hladilni medij poteka po vsaj dveh krožnih cevkah, ki se radialno ovijata okoli statorja, vsaka izmed cevk pa ima lahko dodatne radialne prirastke, ki povečajo površino odvoda toplote iz navitij. V tem primeru je pomanjkljivost, da so krožne cevke raporejene po zunanji strani navitij in je posledično odvod toplote skoncentriran na zunanji del navitij električnega stroja gledano v aksialni smeri vrtenja električnega stroja.Patent application GB2580920 discloses a stator where the cooling medium passes through at least two circular tubes that wrap radially around the stator, and each of the tubes may have additional radial increments that increase the heat dissipation surface from the windings. In this case, the disadvantage is that the circular tubes are arranged on the outside of the windings, and as a result, the heat dissipation is concentrated on the outer part of the windings of the electrical machine, viewed in the axial direction of rotation of the electrical machine.
Patentna prijava EP3485558 (WO2018015293A1) opisuje stator brez jarma za aksialni stroj, ki obsega ohišje z obodnim delom in množico podolgovatih delov, ki segajo radialno navznoter od njega, in množico diskretnih statorskih zob, razporejenih v obodnem delu, pri čemer vsak diskretni statorski zob obsega feromagnetni material in električno navitje. Ohišje nadalje obsega električno izolirni polnilni material, ki zapolnjuje prazen prostor znotraj ohišja. Obodni del ohišja je izdelan iz prvega neferomagnetnega materiala, podolgovati deli pa iz drugega neferomagnetnega materiala. Hladilni medij je od izvora največje generacije toplote precej oddaljen in pobira generirano toploto iz navitij preko posrednih delov, pri čemer je efektivnost hlajenja zmanjšana. Postavitev kanalov za hladilni medij se po tej rešitvi razlikuje od pričujočega izuma.Patent application EP3485558 (WO2018015293A1) describes a yokeless stator for an axial machine comprising a housing having a peripheral portion and a plurality of elongate portions extending radially inwardly therefrom and a plurality of discrete stator teeth arranged in the peripheral portion, each discrete stator tooth comprising ferromagnetic material and electrical winding. The housing further comprises an electrically insulating filler material that fills the empty space within the housing. The peripheral part of the housing is made of the first non-ferromagnetic material, and the elongated parts are made of the second non-ferromagnetic material. The cooling medium is quite far from the source of the maximum heat generation and collects the generated heat from the windings via indirect parts, whereby the cooling efficiency is reduced. According to this solution, the arrangement of the channels for the cooling medium differs from the present invention.
V patentnih prijavah VVO2010/092400 in WO2015124922 je hladilni medij v neposrednem stiku z navitji. Jedra električnega stroja so fiksirana tako, da plošča oz. školjka iz vsake od dveh aksialnih strani objame jedra in jih zaradi oblikovne zveze drži v točni poziciji. Ti dve rešitvi imata dve pomanjkljivosti. Prva je ta, da je hladilni medij olje, kar zahteva bolj kompleksno in težje postrojenje hladilnega sistema. Druga pomanjkljivost pa je, da t.i. školjke, ki skrbijo za pozicijo jeder in navitij, zavzamejo aksialni prostor med koncem jedra in magneti električnega stroja, v t.i. aksialni zračni reži. Zračna reža je eden ključnih parametrov električnega stroja in vpliva na več parametrov, kot so navor, moč, hitrost in izkoristek. Aksialna reža je pri večini strojev te vrste okrog 1 mm in dodaten odmik zaradi drugih komponent lahko pomeni drastično izgubo navora in/ali izkoristka električnega stroja.In patent applications VVO2010/092400 and WO2015124922, the cooling medium is in direct contact with the windings. The cores of the electric machine are fixed so that the plate or the shell embraces the cores from each of the two axial sides and holds them in the exact position due to the design connection. These two solutions have two drawbacks. The first is that the cooling medium is oil, which requires a more complex and difficult installation of the cooling system. Another disadvantage is that the so-called shells, which take care of the position of the cores and windings, occupy the axial space between the end of the core and the magnets of the electric machine, in the so-called axial air gaps. The air gap is one of the key parameters of an electric machine and affects several parameters such as torque, power, speed and efficiency. In most machines of this type, the axial gap is around 1 mm, and additional clearance due to other components can mean a drastic loss of torque and/or efficiency of the electric machine.
Patentna prijava EP3764526 opisuje rešitev, pri kateri je celoten stator zapolnjen z oljem, ki skrbi za odvajanje toplote in preliva navitja. Stator ima izvedena dva kanala, notranji krožni kanal in zunanji obodni kanal, nato pa ima poleg navitij stator vstavljene vodilne stene, ki usmerjajo olje iz kanala v kanal. Pot hladilne tekočine pri tej rešitvi se razlikuje od pričujočega izuma.Patent application EP3764526 describes a solution in which the entire stator is filled with oil, which takes care of heat dissipation and winding overflow. The stator has two channels, an inner circular channel and an outer circumferential channel, and then, next to the stator windings, guide walls are inserted to direct the oil from the channel to the channel. The coolant path in this solution differs from the present invention.
Slabost vseh rešitev je, da nimajo optimalno porazdeljenega hladilnega medija, veliko izumov pa za hladilni medij uporablja olje, zato je celotno postrojenje hladilnega sistema dražje in bolj robustno, ker zahteva višji delovni tlak za poganjanje hladilnega medija.The disadvantage of all solutions is that they do not have an optimally distributed cooling medium, and many inventions use oil for the cooling medium, so the entire cooling system plant is more expensive and more robust because it requires a higher working pressure to drive the cooling medium.
Opis rešitve tehničnega problemaDescription of the solution to the technical problem
Stator po izumu rešuje zgoraj omenjene probleme znanih rešitev. Tehnični problem je rešen, kot je definirano v neodvisnem patentnem zahtevku, medtem ko so prednostne izvedbe definirane v odvisnih patentnih zahtevkih. Stator je sestavljen iz: - Osnove statorja iz neferomagnetnega in mehansko trdnega materiala s čim višjo toplotno prevodnostjo, pri čemer je izbrani material v skupini, v kateri so neferomagnetne kovine, tehnični laminat (karbonska vlakna, tehnični laminat, steklena vlakna ali podobno), plastika (PPS, PA, PPA, PEEK, PEI ali podobno) ali plastika z vključenimi vlakni ali drugimi komponentami, ki izboljšajo mehanske lastnosti materiala (steklena vlakna, aramidna vlakna, karbonska vlakna ali podobno), prednostno iz aluminija,The stator according to the invention solves the above-mentioned problems of known solutions. The technical problem is solved as defined in the independent patent claim, while preferred embodiments are defined in the dependent patent claims. The stator consists of: - Stator base made of non-ferromagnetic and mechanically solid material with the highest possible thermal conductivity, whereby the selected material is in the group that includes non-ferromagnetic metals, technical laminate (carbon fibers, technical laminate, glass fibers or similar), plastic (PPS, PA, PPA, PEEK, PEI or similar) or plastic with included fibers or other components that improve the mechanical properties of the material (glass fibers, aramid fibers, carbon fibers or similar), preferably made of aluminum,
- Obroča statorja, ki zapre in mehansko ojača konstrukcijo, pri čemer je obroč narejen iz neferomagnetnega in mehansko trdnega materiala s čim višjo lastnostjo toplotne prevodnosti in čim nižjo električno prevodnostjo, prednostno se material izbere v skupini, v kateri so tehnični laminat (karbonska vlakna, tehnični laminat, steklena vlakna ali podobno), plastika (PPS, PA, PPA, PEEK, PEI ali podobno) ali plastika z vključenimi vlakni ali drugimi komponentami, ki izboljšajo mehanske lastnosti materiala (steklena vlakna, aramidna vlakna, karbonska vlakna ali podobno),- The ring of the stator, which closes and mechanically strengthens the construction, whereby the ring is made of a non-ferromagnetic and mechanically strong material with the highest possible thermal conductivity and the lowest possible electrical conductivity, preferably the material is selected from the group in which there are technical laminates (carbon fibers, technical laminate, glass fibers or similar), plastic (PPS, PA, PPA, PEEK, PEI or similar) or plastic with included fibers or other components that improve the mechanical properties of the material (glass fibers, aramid fibers, carbon fibers or similar),
- vsaj enega rebra statorja, pri čemer je med vsakima sosednjima rebroma statorja izdelana vrzel, v katero je vstavljeno feromagnetno jedro oz. t.i. statorski čevelj, okrog katerega je navit električni prevodnik, prednostno bakrena žica, kar tvori del navitja, ko pa sta vsaj dva tovrstna dela navitij električno prevodno povezana skupaj, tvorita navitje,- at least one stator rib, whereby a gap is created between each adjacent stator rib, into which a ferromagnetic core or the so-called stator shoe, around which an electrical conductor, preferably a copper wire, is wound, which forms part of the winding, but when at least two such parts of the windings are electrically conductively connected together, they form a winding,
- Vložka statorja in plošča vložka statorja, ki skupaj z osnovo statorja in obročem statorja definirata pot hladilnega medija v obliki vsaj enega hladilnega kanala, in sicer je pod vsakim drugim navitim statorskim čevljem oz. feromagnetnim jedrom proti središču statorja nameščen vložek, med vrhovoma dveh reber na zunanjem obodu osnove statorja pa je nameščena plošča vložka- The stator insert and the stator insert plate, which, together with the stator base and the stator ring, define the path of the cooling medium in the form of at least one cooling channel, namely under every other wound stator shoe or ferromagnetic core towards the center of the stator, an insert is placed, and between the tops of two ribs on the outer circumference of the stator base, an insert plate is placed
- vsaj ene vstopne in vsaj ene izstopne točke za hladilni medij, prednostno lociranih v obroču statorja, in sta povezani z vsaj enim hladilnim kanalom.- at least one entry point and at least one exit point for the cooling medium, preferably located in the stator ring, and are connected to at least one cooling channel.
Bistvo statorja s hladilnim sistemom po izumu je v tem, da je v osnovi statorja, prednostno pa v osnovi in obroču statorja narejen vsaj en, prednostno pa večje število kanalov za hladilni medij, pri čemer je pot med omenjenima točkama speljana po notranjosti statorja direktno ob navitjih elektromotorja s pomočjo vstavkov in plošč vstavkov, katerih število je odvisno od števila reber oziroma statorskih čevljev v statorju, medtem, ko je pri ostalih do sedaj znanih načinih hlajenja pot speljana samo po zunanjem obodu. Odprtine za vstop in izstop hladilnega medija so lahko med seboj tudi vzporedno povezane znotraj ali zunaj električnega stroja.The essence of the stator with the cooling system according to the invention is that in the base of the stator, and preferably in the base and ring of the stator, at least one, and preferably a larger number of channels for the cooling medium are made, whereby the path between the mentioned points is led along the inside of the stator directly next to of the windings of the electric motor with the help of inserts and insert plates, the number of which depends on the number of ribs or stator shoes in the stator, while with the other cooling methods known so far, the path is only along the outer circumference. Openings for the entry and exit of the cooling medium can also be connected in parallel to each other inside or outside the electrical machine.
Stator oz. elektromotor mora za delovanje imeti zunanjo črpalko, ki je na primer lahko povezana direktno na pogon elektromotorja preko zobnikov, jermena in podobnih prenosov, ali pa je povsem neodvisno gnana z lastnim pogonom. Omenjena črpalka je zunanja in ni del statorja.Stator or In order to function, the electric motor must have an external pump, which, for example, can be connected directly to the drive of the electric motor via gears, belts and similar transmissions, or it can be completely independently driven by its own drive. Said pump is external and not part of the stator.
Pot hladilnega medija lahko speljana na različne načine:The path of the cooling medium can be routed in different ways:
- zaporedno, pri čemer poteka po vsakem rebru osnove statorja vsaj en kanal v eni smeri (npr. radialno navzgor ali navzdol in nato v vsakem naslednjem rebru radialno navzgor ali navzdol (izmenjujoče glede na smer toka v prejšnjem rebru)). Kanal ali več kanalov se torej ovijajo okoli navitij, in sicer prednostno okoli navitij navzdol proti notranjemu radiju v smeri sredine osi elektromotorja (radialna smer), nato na spodnjem delu navitij (notranji radij statorja) tangencialno, kjer naredi ovinek in spet nadaljuje radialno navzgor, kjer na zunanjem radiju osnove statorja zavije v tangencialni smeri okrog centralne osi na naslednji del navitja in spet nadaljuje navzdol radialno, in tako naprej okoli vsakega dela navitja, ki ga ima stator.- sequentially, with at least one channel running along each rib of the stator base in one direction (e.g. radially up or down and then in each subsequent rib radially up or down (alternating with respect to the current direction in the previous rib)). The channel or several channels are therefore wrapped around the windings, preferably around the windings downwards towards the inner radius in the direction of the center of the axis of the electric motor (radial direction), then tangentially at the lower part of the windings (inner radius of the stator), where it makes a bend and continues radially upwards again, where at the outer radius of the stator base it turns in a tangential direction around the central axis to the next part of the winding and again continues down radially, and so on around each part of the winding that the stator has.
- vzporedno, pri čemer se kanali med seboj na vsaj eni točki lahko poljubno združujejo. Združijo se na notranjem ali/in zunanjem radiju po poteku v tangencialni smeri in se nato razdelijo za pot čez ločena rebra statorja, nato se spet združijo na notranjem ali zunanjem radiju. Kanali se torej ovijajo okoli navitij, in sicer prednostno okoli navitij navzdol vzporedno preko večih reber statorja naenkrat proti notranjemu radiju v smeri sredine osi elektromotorja (radialna smer), nato se na spodnjem delu navitij (notranji radij statorja) vzporedno pripeljani tokovi združijo in nadaljujejo pot tangencialno, kjer naredi skupen hladilni kanal razslojitev v več vzporednih kanalov, ki nadaljujejo radialno navzgor po več rebrih statorja naenkrat, nato se na zunanjem radiju osnove statorja ponovno združijo v en kanal v in nadaljujejo pot tangencialno, kjer naredi skupen hladilni kanal razslojitev v več vzporednih kanalov, ki nadaljujejo radialno navzdol po več rebrih statorja naenkrat, in tako naprej.- in parallel, whereby the channels can be arbitrarily joined to each other at at least one point. They come together at the inner or/and outer radius after running in the tangential direction and then split to travel across the separate stator fins, then come together again at the inner or outer radius. The channels therefore wrap around the windings, preferably around the windings downwards in parallel across several stator ribs at once towards the inner radius in the direction of the center of the axis of the electric motor (radial direction), then on the lower part of the windings (inner radius of the stator) the currents brought in parallel unite and continue their journey tangentially, where it makes the common cooling channel stratification into several parallel channels that continue radially up several stator ribs at once, then at the outer radius of the stator base they rejoin into one channel v and continue the path tangentially, where it makes the common cooling channel stratification into several parallel channels continuing radially down several stator fins at once, and so on.
- izmenjujoče zaporedno in vzporedno.- alternating series and parallel.
Z vzporedno speljanimi kanali oziroma potjo hladilnega medija se zmanjša temperaturna razlika med deli elektromotorja in poviša pretok hladilnega medija, ampak poviša kompleksnost izdelave.With parallel channels or the path of the cooling medium, the temperature difference between the parts of the electric motor is reduced and the flow of the cooling medium is increased, but the manufacturing complexity is increased.
V kolikor se izvede hladilni sistem z več vhodi in izhodi se delna pot hladilnega medija skrajša, zviša pa se skupen presek za vstop in izstop hladilnega medija, kar dvigne skupen pretok medija skozi hladilne kanale, zmanjša pa se tudi maksimalna temperatura hladilega medija na izstopni strani hladilnih kanalov, kar posledično privede do boljšega hladilnega učinka. Taka izvedba konstrukcije statorja zavzame nekaj več volumna in zviša kompleksnost izdelave, tako da je potrebno pri vsakem specifičnem primeru izdelati najbolj optimalno konstrukcijo za ta specifičen primer.If a cooling system with several inlets and outlets is implemented, the partial path of the cooling medium is shortened, and the total cross-section for the entry and exit of the cooling medium is increased, which increases the total flow of the medium through the cooling channels, and the maximum temperature of the cooling medium on the outlet side also decreases. cooling channels, which in turn leads to a better cooling effect. Such an implementation of the stator construction takes up a little more volume and increases the complexity of production, so that in each specific case it is necessary to produce the most optimal construction for that specific case.
Na zgoraj opisane možne načine izvedbe kanalov je hladilnemu mediju dopuščeno potovanje po poti, ki je speljana čim bližje področjem stroja z najvišjo generacijo toplote, t.j. električna navitja, in hkrati izkorišča čim večjo možno površino prenosa in prevoda toplote iz statorja na hladilni medij. Material, ki je v neposrednem stiku s hladilnim medijem, je v čim bolj neposrednem in čim večjem stiku z deli, ki proizvajajo največ toplote v električnem stroju (primarno navitje), konstrukcija statorja pa zagotavlja nizke izgube (malo vrtinčnih tokov) in visoko mehansko trdnost in stabilnost, saj je osnova statorja oblikovno zelo tog in kompakten kos, ki povezuje pesto za ležaje in statični del pritrditve elektromotorja. Prednostno so vsi deli v sestavljenem stanju zaliti z epoksi smolo, kar zagotavlja dodatno trdnost.In the above-described possible ways of implementing the channels, the cooling medium is allowed to travel along a path that is taken as close as possible to the areas of the machine with the highest heat generation, i.e. electrical windings, and at the same time utilizes the largest possible area of heat transfer and transfer from the stator to the cooling medium. The material in direct contact with the cooling medium is in direct and maximum contact with the parts that generate the most heat in the electrical machine (primary winding), and the stator construction ensures low losses (low eddy currents) and high mechanical strength and stability, as the stator base is a very rigid and compact piece that connects the hub for the bearings and the static part of the electric motor attachment. Preferably, all parts in the assembled state are filled with epoxy resin, which provides additional strength.
Omenjeni hladilni kanali so lahko izdelani na različne načine, z mehansko obdelavo (na primer rezanje, rezkanje, brušenje, vrtanje) celotnega kosa statorja, lahko so narejeni z metodo 3D tiskanja, sintranja ali z metodo brizganja ali vlivanja z že vključenimi delnimi ali celotnimi oblikami hladilnih kanalov.Said cooling channels can be made in different ways, by mechanical processing (for example, cutting, milling, grinding, drilling) of the entire stator piece, they can be made by 3D printing, sintering or injection or casting methods with partial or complete shapes already included cooling channels.
V primeru laminirane strukture osnove statorja so hladilni kanali lahko narejeni z naknadno obdelavo po spojitvenem procesu segmentov laminacije ali z metodo pri kateri so segmenti proizvedeni na način, da so hladilni kanali že del ploščnih segmentov, kjer so laminirani segmenti pred medsebojno spojitvijo izdelani s primerno tehnologijo, kot je npr. rezanje z laserjem, rezanje z vodnim curkom, rezanje z žično erozijo, štancanje ali s katerakoli drugo primerno metodo izdelave.In the case of the laminated structure of the stator base, the cooling channels can be made by post-processing after the joining process of the lamination segments, or by a method in which the segments are produced in such a way that the cooling channels are already part of the plate segments, where the laminated segments are manufactured with the appropriate technology before joining them together , such as laser cutting, water jet cutting, wire erosion cutting, stamping or any other suitable manufacturing method.
Prečni prerez kanalov je poljubne oblike. Lahko je okrogel, pravokoten, pravokoten z zaobljenimi koti ali elipsast. Z vrtanjem se najlažje izdela kanale s krožnim prečnim prerezom, z rezkanjem najlažje dobimo kanale s prečnim prerezom v obliki elipse ali z zaobljenimi koti, z rezkanjem od strani se lahko naredi kanale s prečnim prerezom v obliki pravokotnika, z litjem in 3d printanjem pa kakršnokoli obliko, vendar nabolj učinkovito pravokotnik ali krog.The cross-section of the channels is of any shape. It can be round, rectangular, rectangular with rounded corners or elliptical. Drilling is the easiest way to make channels with a circular cross-section, with milling it is easiest to get channels with an elliptical cross-section or with rounded corners, with side milling you can make channels with a rectangular cross-section, and with casting and 3d printing any shape , but the most effective rectangle or circle.
Vstavek statorja je del, ki omogoča lažjo izdelavo hladilnih kanalov in nemoteno pot hladilnega medija, saj skrbi za zavoj hladilnega medija okrog spodnje točke navitja (gledano po radialni smeri) nazaj navzgor. Vstavek ima osnovno telo s prostorom za sprejem kanalov, ki je po želji opremljen s poljubnim številom reber, s katerimi se vodi kanale za hladilni medij. Možen je tudi primer vstavka, ko v osnovnem telesu ni reber. Narejen je iz neferomagnetnega materiala s čim višjo toplotno prevodnostjo. Vstavek statorja je primarno, vendar ne obvezujoče izdelan z metodo rezkanja, lahko pa tudi z vlivanjem, brizganjem, 3d printanjem, lameliranjem ali katerokoli drugo primerno tehnologijo izdelave. Vstavljen je v osnovo statorja, kjer je pozicioniran in pritrjen, primarno z lepilom ali epoksi smolo, lahko pa tudi s tesnim ujemom, varjenjem ali katerimkoli elementom namenjenim pritrjevanju (vijak, klina, vskočnik, kovica ali podobno) ali na kakršenkoli drug primeren način pritrditve ali spojitve.The stator insert is a part that facilitates the production of cooling channels and an undisturbed path of the cooling medium, as it takes care of the turning of the cooling medium around the lower point of the winding (seen in the radial direction) back up. The insert has a basic body with a space for receiving the channels, which is optionally equipped with any number of ribs with which the channels for the cooling medium are guided. An example of an insert is also possible when there are no ribs in the basic body. It is made of non-ferromagnetic material with the highest possible thermal conductivity. The stator insert is primarily, but not necessarily, manufactured using the milling method, but it can also be made using casting, injection molding, 3d printing, lamination or any other suitable manufacturing technology. It is inserted into the base of the stator, where it is positioned and fixed, primarily with glue or epoxy resin, but it can also be tight fit, welding or any element intended for fastening (screw, wedge, snap, rivet or similar) or any other suitable method of fastening or conjunctions.
Običajno se vstavek namesti pod vsakim drugim statorskim feromagnetnim jedrom, in s tem poskrbijo za zavoj toka hladilnega medija pod navitjem električnega stroja. Za doseganje višje mehanske trdnosti statorja je zaželeno, da je vsak drugi zaporedni del vstavljen z nasprotne strani (gledano v aksialni smeri statorja). Za doseganje tega učinka so možne tudi druge postavitve, kar je očitno strokovnjaku na področju.Usually, the insert is placed under every other stator ferromagnetic core, and with this they take care of the winding of the current of the cooling medium under the winding of the electric machine. In order to achieve higher mechanical strength of the stator, it is desirable that every other successive part is inserted from the opposite side (viewed in the axial direction of the stator). Other arrangements are possible to achieve this effect, as will be apparent to one skilled in the art.
Možna je izvedba, kjer polovica kanalov v rebrih statorja vodi pretok hladilne tekočine v eno smer, nato hladilna tekočina zaokroži po vrhu reber statorja in nato skozi drugo polovico hladilnih kanalov skozi rebra statorja. Število kanalov v vsakem rebru statorja je poljubno, vendar je zaradi ohranjanja konstantne hitrosti hladilnega medija priporočljivo sodo število kanalov z ohranjeno površino presekov. Vstavki so lahko razporejeni izmenično spredaj in zadaj gledano v smeri aksialne osi elektromotorja pod vsakim statorskim čevljem oz. feromagnetnim jedrom statorja.A design is possible where half of the channels in the stator fins lead the coolant flow in one direction, then the coolant circulates around the top of the stator fins and then through the other half of the cooling channels through the stator fins. The number of channels in each stator rib is arbitrary, but in order to maintain a constant speed of the cooling medium, an even number of channels with a preserved cross-sectional area is recommended. The inserts can be arranged alternately in front and behind, viewed in the direction of the axial axis of the electric motor, under each stator shoe or ferromagnetic stator cores.
Plošča vstavka statorja je del, ki prav tako omogoča lažjo izdelavo hladilnih kanalov in nemoteno pot hladilnega medija. Plošča vstavka je lahko ravna ploščica ali pa je oblikovana kot element z eno ali več stranic. Možen je primer, ko je plošča sestavljena iz daljšega osrednjega dela, ki je na dveh ožjih koncih zaključen z dvema pravokotnima deloma. Narejen je iz neferomagnetnega materiala s čim višjo toplotno prevodnostjo in čim višjo temperaturno odpornostjo. Plošča vstavka statorja je vstavljena v osnovo statorja, kjer je pritrjena, prednostno z lepilom ali epoksi smolo, lahko pa tudi s tesnim ujemom, varjenjem ali katerimkoli elementom namenjenim pritrjevanju (vijak, klina, kovica ali podobno) ali na kakršenkoli drug primeren način pritrditve ali spojitve. Omenjena plošča skrbi tudi za ustrezno ločitev kanalov od navitij, v primeru, daje hladilni medij električno prevoden material.The stator insert plate is a part that also facilitates the production of cooling channels and the smooth path of the cooling medium. The insert plate can be a flat plate or it can be designed as an element with one or more sides. A case is possible when the panel consists of a longer central part, which is finished at the two narrower ends with two rectangular parts. It is made of non-ferromagnetic material with the highest possible thermal conductivity and the highest possible temperature resistance. The stator insert plate is inserted into the base of the stator, where it is fixed, preferably with glue or epoxy resin, but it can also be done by a tight fitting, welding or any element intended for fastening (screw, wedge, rivet or similar) or by any other suitable method of fastening or connections. The mentioned plate also ensures adequate separation of the channels from the windings, in the case that the cooling medium provides an electrically conductive material.
Za hlajenje se lahko uporabi katerokoli primerno hladilno sredstvo, še posebno so uporabni voda, mešanica vode in glikola, olje, dielektrična tekočina ali zrak, prednostno pa se uporabi mešanica vode in glikola. Možno bi bilo uporabiti tudi pline, vendar pa so ti zaradi cene pogosto nezaželeni. V kolikor je uporabljen hladilni medij električno prevoden material, kot je mešanica vode in glikola, mora konstrukcija električnega stroja preprečevati hladilnemu mediju direkten stik z električnimi komponentami stroja kot so električna navitja in/ali žica, v kolikor pa je hladilni medij električno neprevoden material, na primer olje, pa preprečevanje direktnega stika hladilnega medija z električnimi komponentami ni potrebno.Any suitable cooling agent can be used for cooling, especially water, a mixture of water and glycol, oil, dielectric liquid or air, and a mixture of water and glycol is preferably used. It would also be possible to use gases, but these are often undesirable due to the cost. If the cooling medium used is an electrically conductive material, such as a mixture of water and glycol, the design of the electrical machine must prevent the cooling medium from coming into direct contact with electrical components of the machine, such as electrical windings and/or wire, and if the cooling medium is an electrically non-conductive material, on e.g. oil, preventing direct contact of the cooling medium with electrical components is not necessary.
V kolikor je kot hladilni medij uporabljen električno prevoden medij, so kanali tesnjeni s posebnim lepljenjem osnove in obroča statorja, kar poskrbi za tesnitev. V ta namen se lahko uporabi katerokoli lepilo za strukturno lepljenje. Tudi vstavek in plošča vstavka sta zalepljena, hkrati pa je lahko nameščeno še tesnilo. Tesnilo mora biti na spoju med deloma, torej med vstavkom statorja in osnovo statorja ali pa med ploščo statorja, osnovo statorja in obročem statorja. Tesnila morajo biti prožna in odporna na hladilni medij (voda, glikol, olje), Načeloma je material tesnila silikon, viton ali guma. Tesnilo ni nujno potrebno, ker običajno zadostuje že samo lepilo.If an electrically conductive medium is used as the cooling medium, the channels are sealed by special gluing of the base and the stator ring, which ensures sealing. Any structural adhesive can be used for this purpose. The insert and insert plate are also glued, and a gasket can be installed at the same time. The seal must be at the joint between the parts, i.e. between the stator insert and the stator base or between the stator plate, the stator base and the stator ring. The seals must be flexible and resistant to the cooling medium (water, glycol, oil). In principle, the seal material is silicone, viton or rubber. A sealant is not absolutely necessary, as glue alone is usually sufficient.
Osnova statorja je lahko narejena tudi iz neferomagnetnih plošč, ki so spojene v laminirano strukturo z metodo adhezije (lepilo ali epoksi smolo), vijačenjem, kovičenjem, t.i. interlocking, varjenjem ali katerokoli drugo primerno metodo izdelave. Osnova ter obroč statorja in vložek statorja s ploščo so lahko narejeni kot enoten kos, v primeru, da je stator izdelan iz plastičnega ali podobnega električno neprevodnega materiala. Obroč statorja je prednostno na zunanjem in/ali na notranjem obodu opremljen s pritrditvenimi zobmi za lažje pozicioniranje in oblikovno spajanje, luknje ali navoje za montažo stroja.The base of the stator can also be made of non-ferromagnetic plates, which are joined into a laminated structure by the method of adhesion (glue or epoxy resin), screwing, riveting, i.e. interlocking, welding or any other suitable manufacturing method. The base and the stator ring and the stator insert with the plate can be made as a single piece, in case the stator is made of plastic or similar electrically non-conductive material. The stator ring is preferably equipped on the outer and/or inner circumference with fastening teeth for easier positioning and form fitting, holes or threads for machine mounting.
Ko so zgoraj omenjeni deli statorja sestavljeni v celoto je zaradi trdnosti, natančnosti in stabilnosti sestava priporočljivo, da so združeni z lepilom, epoksi smolo, tesnim ujemom, oblikovno zvezo, vijačno zvezo. Običajno je celoten sestav pozicioniran v kalupu ali primerni šabloni in zalit z maso, ki ima čim višjo toplotno prevodnost, čim višjo mehansko trdnost in čim višjo lastnost električne izolativnosti. Prednostno se za omenjeno zalivno maso uporabi epoksi smola, plastika (PPS, PA, PPA, PEEK, PEI ali podobno) ali plastika z vključenimi vlakni ali drugimi komponentami, ki izboljšajo mehanske lastnosti materiala (steklena vlakna, aramidna vlakna, karbonska vlakna ali podobno)). Po omenjenem postopku zalitja je ponavadi potrebno opraviti postopek “curinga” zato, da zalivni material razvije potrebne mehanske lastnosti.When the above-mentioned parts of the stator are assembled as a whole, it is recommended that they be joined with glue, epoxy resin, tight fitting, form-fitting connection, and screw connection for the sake of strength, precision and stability of the assembly. Usually, the entire assembly is positioned in a mold or a suitable template and poured with a mass that has the highest possible thermal conductivity, the highest possible mechanical strength and the highest possible electrical insulating properties. Preferably, epoxy resin, plastic (PPS, PA, PPA, PEEK, PEI or the like) or plastic with included fibers or other components that improve the mechanical properties of the material (glass fibers, aramid fibers, carbon fibers or the like) are used for said filling mass. ). After the aforementioned casting process, it is usually necessary to perform a "curing" process in order for the casting material to develop the necessary mechanical properties.
Dodatno ima lahko stator po izumu še stransko ploščo. Glavna funkcija stranske plošče je zaprtje in zatesnitev hladilnih kanalov z ene od strani dela osnova statorja, obenem pa ta del lahko služi za dodatno pritrditev in pozicioniranje navitij in/ali feromagnetnih jeder električnega stroja. Možnih je več variant stranske plošče, na primer, lahko je izdelana kot ravna enostavna plošča z izrezanimi konturami, ki se oblikovno prilegajo zunanji obliki feromagnetnih jeder električnega stroja, ali pa ima na primer izbočene konture, ki se prilegajo hladilnim kanalom osnove statorja.According to the invention, the stator can additionally have a side plate. The main function of the side plate is to close and seal the cooling channels from one side of the stator base part, and at the same time this part can serve for additional fixing and positioning of the windings and/or ferromagnetic cores of the electric machine. Several variants of the side plate are possible, for example, it can be made as a flat simple plate with cut contours that conform to the external shape of the ferromagnetic cores of the electric machine, or it can have, for example, convex contours that fit into the cooling channels of the stator base.
Stranska plošča je nujna samo v izvedbenem primeru, kjer so kanali narejeni iz sprednje in zadnje strani gledano v aksialni osi elektromotorja, torej z litjem ali brizganjem plastike ali pa pri rezkanju kanalov iz sprednje in/ali zadnje strani, gledano v smeri aksialne osi elektromotorja.The side plate is necessary only in the implementation case, where the channels are made from the front and back side as seen in the axial axis of the electric motor, i.e. by casting or injection of plastic, or when milling the channels from the front and/or back side, as seen in the direction of the axial axis of the electric motor.
Stator s hladilnim sistemom po izumu lahko deluje kot motor oz. služi za pogon ali kot generator in ima izboljšano sposobnost ohlajanja in/ali učinkovitosti in/ali mehanske trdnosti.The stator with the cooling system according to the invention can function as a motor or serves as a drive or as a generator and has improved cooling capacity and/or efficiency and/or mechanical strength.
Stator s hladilnim sistemom po izumu je lahko vgrajen v katerikoli primeren električni stroj na znane načine, prednostno pa je vgrajen v elektromotor z aksialnim magnetnim pretokom brez jarma. Zasnovo hladilnih kanalov po izumu se lahko uporabi tudi pri ostalih izvedbah aksialnega stroja, z jarmom ali brez, z enim ali večimi statorji, z enim ali več rotorji in prav tako pri električnem stroju brez jarma z radialnim magnetnim pretokom. Prednostni izvedbeni primer izuma je stator s hladilnim sistemom za električni stroj z aksialnim potekom magnetnega pretoka z enim statorjem brez jarma in dvema krožnikastima rotorjema.The stator with the cooling system according to the invention can be installed in any suitable electric machine in known ways, but it is preferably installed in an electric motor with an axial magnetic flux without a yoke. The design of the cooling channels according to the invention can also be used in other versions of the axial machine, with or without a yoke, with one or more stators, with one or more rotors, and also in an electric machine without a yoke with a radial magnetic flow. A preferred embodiment of the invention is a stator with a cooling system for an electric machine with an axial flow of magnetic flux with one stator without a yoke and two disc rotors.
V nadaljevanju bo izum natančneje opisan s pomočjo izvedbenih primerov in slik, ki prikazujejo:In the following, the invention will be described in more detail with the help of examples and pictures showing:
Slika 1 Električni stroj po izvedbenem primeru IFigure 1 Electric machine according to implementation example I
Slika 2 Sestavljen stator po izvedbenem primeru IFigure 2 Assembled stator according to embodiment I
Slika 3 Stator s kanali, ki usmerjajo hladilni medij zaporednoFigure 3 Stator with channels that direct the cooling medium in series
Slika 4 Stator s kanali, ki usmerjajo hladilni medij vzporednoFigure 4 Stator with channels that direct the cooling medium in parallel
Slika 5 Stator po izvedbenem primeru II, kjer so osnova, obroč, vstavek in plošča vstavka narejeni kot enoten kos, kjer je vidna tudi stranska plošča statorja in pesto ležajaFigure 5 Stator according to embodiment II, where the base, ring, insert and insert plate are made as a single piece, where the side plate of the stator and the bearing hub are also visible
Slika 6 Vstavek statorja (a) in plošča vstavka statorja (b) v dveh možnih izvedbahFigure 6 Stator insert (a) and stator insert plate (b) in two possible designs
Slika 7 Stator po izvedbenem primeru III, kjer kanali po vsakem rebru potekajo navzgor in navzdol in se obrnejo na vrhu rebraFigure 7 Stator according to embodiment III, where the channels along each rib run up and down and turn at the top of the rib
Slika 8 Stator po izvedbenem primeru IV, kjer so kanali oblikovani iz cevi in vstavljeni v sestav.Figure 8 Stator according to embodiment IV, where channels are formed from pipes and inserted into the assembly.
Električni stroj z aksialnim potekom magnetnega pretoka z enim statorjem 12 brez jarma in dvema krožnikastima rotorjema 13 prikazan na sliki 1.An electric machine with an axial flow of magnetic flux with one stator 12 without a yoke and two disk rotors 13 is shown in Figure 1.
Stator po izvedbenem primeru prikazanih na sliki 2 je sestavljen iz:The stator according to the embodiment shown in Figure 2 consists of:
- osnove statorja 1,- stator bases 1,
- obroča statorja 2, ki zapre in mehansko poveže/ojača konstrukcijo,- stator ring 2, which closes and mechanically connects/reinforces the structure,
- vsaj enega rebra 1b statorja, pri čemer je med vsakima sosednjima rebroma statorja izdelana vrzel 5, v katero je vstavljeno feromagnetno jedro 6 oz. t.i. statorski čevelj, okrog katerega je navit električni prevodnik 7, prednostno bakrena žica, kar tvori del navitja 8a, ko pa sta vsaj dva tovrstna dela navitij električno prevodno povezana skupaj, tvorita navitje 8,- at least one rib 1b of the stator, whereby a gap 5 is created between each adjacent stator rib, into which a ferromagnetic core 6 or the so-called stator shoe, around which an electrical conductor 7, preferably a copper wire, is wound, which forms a part of the winding 8a, but when at least two such parts of the windings are electrically conductively connected together, they form a winding 8,
- vložka statorja 3 in plošča vložka statorja 4, ki skupaj z obročem 2 statorja definirata pot hladilnega medija v obliki vsaj enega hladilnega kanala 1a,- the stator inserts 3 and the stator insert plate 4, which together with the stator ring 2 define the path of the cooling medium in the form of at least one cooling channel 1a,
- vsaj ene vstopne točke 1c in vsaj ene izstopne točke 1d za hladilni medij, ki sta locirani v obroču statorja in povezani z vsaj enim hladilnim kanalom 1a.- at least one entry point 1c and at least one exit point 1d for the cooling medium, which are located in the stator ring and connected to at least one cooling channel 1a.
Slika 3 prikazuje stator, ki ima zaporedni potek kanalov, pri čemer se kanali ovijajo okoli navitij v smeri, ki jo nakazujejo puščice, in sicer navzdol proti notranjemu radiju v smeri sredine osi elektromotorja (radialna smer), nato na spodnjem delu navitij (notranji radij statorja) tangencialno, kjer naredi ovinek in spet nadaljuje radialno navzgor, kjer na zunanjem radiju osnove statorja zavije v tangencialni smeri glede na centralno os na naslednji del navitja in spet nadaljuje navzdol radialno, in tako naprej okoli vsakega dela navitja, ki ga ima stator.Figure 3 shows a stator that has a sequential course of channels, where the channels wrap around the windings in the direction indicated by the arrows, namely down towards the inner radius in the direction of the center of the axis of the electric motor (radial direction), then on the lower part of the windings (inner radius of the stator) tangentially, where it makes a bend and again continues radially upward, where at the outer radius of the stator base it turns tangentially to the central axis to the next part of the winding and again continues downward radially, and so on around each part of the winding that the stator has.
Stator prikazan na sliki 4 ima vzporedni potek kanalov. Kanali se združijo na notranjem ali/in zunanjem radiju po poteku v tangencialni smeri in se nato razdelijo za pot čez ločena rebra statorja, nato se spet združijo na notranjem ali zunanjem radiju. Kanali se torej ovijajo okoli navitij, in sicer prednostno okoli navitij navzdol vzporedno preko večih reber statorja naenkrat proti notranjemu radiju v smeri sredine osi elektromotorja (radialna smer), nato se na spodnjem delu navitij (notranji radij statorja) vzporedno pripeljani tokovi združijo in nadaljujejo pot tangencialno, kjer naredi skupen hladilni kanal razslojitev v več vzporednih kanalov, ki nadaljujejo radialno navzgor po več rebrih statorja naenkrat, nato se na zunanjem radiju osnove statorja ponovno združijo v en kanal in nadaljujejo pot tangencialno, kjer naredi skupen hladilni kanal razslojitev v več vzporednih kanalov, ki nadaljujejo radialno navzdol po več rebrih statorja naenkrat, in tako naprejThe stator shown in Figure 4 has a parallel course of channels. The ducts merge at the inner and/or outer radius after running in the tangential direction and then split to travel across the separate stator fins, then merge again at the inner or outer radius. The channels therefore wrap around the windings, preferably around the windings downwards in parallel across several stator ribs at once towards the inner radius in the direction of the center of the axis of the electric motor (radial direction), then on the lower part of the windings (inner radius of the stator) the currents brought in parallel unite and continue their journey tangentially, where it makes the common cooling channel stratify into several parallel channels, which continue radially up several stator ribs at once, then at the outer radius of the stator base they merge into one channel again and continue the path tangentially, where it makes the common cooling channel stratify into several parallel channels , which continue radially down several stator fins at once, and so on
Slika 5 prikazuje možen izvedbeni primer, kjer so osnova statorja 1, obroč statorja 2, vstavek 3 in plošča vstavka 4 narejeni kot enoten kos, vidna je tudi stranska plošča 10 statorja in pesto ležaja 9.Figure 5 shows a possible embodiment where the stator base 1, stator ring 2, insert 3 and insert plate 4 are made as a single piece, the side plate 10 of the stator and the bearing hub 9 are also visible.
Slika 6a prikazuje dve možni izvedbi vstavka 3, slika 6b pa dve možni izvedbi plošče vstavka 4. Levi primer vstavka 3 ima osnovno telo 31, v katerem je izvedenih sedem reber 32, s katerimi se vodi kanale za hladilni medij, medtem ko ima desni primer vstavka 3 osnovno telo 3T brez reber. Plošča 4 vstavka je lahko ravna ploščica (levo) ali pa je oblikovana kot daljši osrednji del 41, ki je na obeh koncih zaključen z dvema pravokotnima deloma 42.Figure 6a shows two possible designs of the insert 3, and Figure 6b shows two possible designs of the plate of the insert 4. The left example of the insert 3 has a base body 31 in which seven ribs 32 are implemented to guide the channels for the cooling medium, while the right example has insert 3 basic body 3T without ribs. The insert plate 4 can be a flat plate (left) or it can be formed as a longer central part 41, which is terminated at both ends by two rectangular parts 42.
Slika 7 prikazuje stator po izvedbenem primeru III, kjer kanali 1a po vsakem rebru potekajo navzgor in navzdol in se obrnejo na vrhu rebra, kot je razvidno iz preseka na desni strani slike.Figure 7 shows the stator according to embodiment III, where the channels 1a run up and down each rib and turn at the top of the rib, as can be seen in the section on the right side of the figure.
Slika 8 prikazuje izvedbeni primer IV statorja s hladilnimi kanali 1a”, ki so oblikovani iz cevi 11, hkrati pa je v sliki vključen celoten sestav statorja z vključenimi navitjem, sestavljenim iz električnega prevodnika 7 in feromagnetnih jeder 6, obročem statorja 2 in pestom ležaja 9.Figure 8 shows the embodiment IV of the stator with cooling channels 1a", which are formed from pipes 11, and at the same time, the figure includes the entire assembly of the stator with the included winding, consisting of the electrical conductor 7 and ferromagnetic cores 6, the stator ring 2 and the bearing hub 9 .
Claims (19)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SI202100220A SI26296A (en) | 2021-12-14 | 2021-12-14 | Stator with cooling system and electrical machine with said stator |
| PCT/SI2022/050028 WO2023113702A1 (en) | 2021-12-14 | 2022-10-27 | A stator with a cooling system and an electric machine with said stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SI202100220A SI26296A (en) | 2021-12-14 | 2021-12-14 | Stator with cooling system and electrical machine with said stator |
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| Publication Number | Publication Date |
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| SI26296A true SI26296A (en) | 2023-06-30 |
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| SI202100220A SI26296A (en) | 2021-12-14 | 2021-12-14 | Stator with cooling system and electrical machine with said stator |
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| SI (1) | SI26296A (en) |
| WO (1) | WO2023113702A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201505756D0 (en) * | 2015-04-02 | 2015-05-20 | Isis Innovation | Winding construction for an electric machine |
| IT201800003388A1 (en) * | 2018-03-08 | 2019-09-08 | Texa Dynamics S R L | "Cooling component for electric motor" |
| CN109474092A (en) * | 2019-01-14 | 2019-03-15 | 上海盘毂动力科技股份有限公司 | A kind of stator module and motor in axial magnetic field |
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- 2021-12-14 SI SI202100220A patent/SI26296A/en active IP Right Grant
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| WO2023113702A1 (en) | 2023-06-22 |
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