SI20051A2

SI20051A2 - Electric motor, including simplified mains connecting elements

Info

Publication number: SI20051A2
Application number: SI9900171A
Authority: SI
Inventors: Bruno Greco
Original assignee: Sisme Immobiliare S.P.A.
Priority date: 1998-07-14
Filing date: 1999-06-28
Publication date: 2000-02-29
Also published as: DE29912127U1; IES990578A2; FR2781316A3; IES81164B2; FR2781316B3; IT244132Y1; ITMI980490U1

Abstract

The electric motor, including simplified mains connecting elements, includes at least one stator coil and at least two elements (5) for connecting the terminals of the stator coil to the mains; each connecting element (5) features a part of the power conductor (3), connected to the varnished coated wire of the stator coil in order to avoid the use of additional connecting elements instead of the specified conductor sections (3).

Description

Električni motor, obsegajoč poenostavljene elemente za priključitev na električno omrežjeAn electric motor comprising simplified elements for connection to the power supply

Predloženi izum se nanaša na električni motor po uvodnem delu glavnega patentnega zahtevka.The present invention relates to an electric motor according to the introductory part of the main claim.

Pri znanih električnih motorjih, predvsem indukcijskih motorjih, so statorska navitja priključena na električno omrežje z dodatnimi kabli primernega preseka in električno izolirani s plastjo različnih vrst, odvisno od termične klase in specifične uporabe. Dodatni kabli imajo na splošno jedro, kije izoblikovano iz bakrenih spletov, tako daje gibko in lahko kljubuje krivljenju in upogibanju.For known electric motors, especially induction motors, the stator windings are connected to the mains with additional cables of suitable cross section and electrically insulated with a layer of various types, depending on the thermal class and specific use. The extra cables generally have a copper-core core that is flexible and can withstand bending and bending.

Da se ti dodatni kabli priključijo na statorske žice, mora biti en konec od vsakega dodatnega kabla brez izolime plasti in se nato poveže, npr. s spajkanjem ah zapogibanjem, z žico ah žicami, npr. iz bakra, statorskega navitja - navitje lahko obsega nekaj žic vzporedno. Tako konec dodatnega kabla, kije ostal neizoliran, kot spajkano področje morata biti pokrita z izolimo cevko, pri čemer se ta cevka po možnosti skrči pod vplivom toplote, da se prepreči njeno premikanje. Dodaten kabel ali kabb so nato nameščeni in pritrjeni vrh navitja. Specifična sponka takšne vrste, ki se zahteva za priključitev na zunanje omrežje, se priključi na primemo gob drugi konec dodatnih kablov. Prej omenjene operacije so sorazmerno težke, dolgotrajne in zapletene in vplivajo čas in strošek pri gradnji motorja.In order for these additional cables to be connected to the stator wires, one end of each additional cable must be free of layer insulation and then connected, e.g. by soldering ah bending, by wire ah wire, e.g. copper, stator winding - winding can consist of several wires in parallel. Both the end of the extra cable remaining uninsulated and the solder area must be covered with an insulated tube, where possible, if possible, the tube is shrunk by heat to prevent it from moving. An additional cable or cabbage is then installed and the top of the winding is attached. A specific clamp of the type required to be connected to an external network is connected to the clamp on the other end of the additional cables. The aforementioned operations are relatively difficult, time-consuming and complex and affect the time and cost involved in building the engine.

Naloga tega izuma je ponuditi motor, v katerem so opravila, ki se zahtevajo, da se statorsko navitje ali navitja priključijo na zunanje električno omrežje, poenostavijo in olajšajo. Ta in druge naloge, ki bodo očitne strokovnjaku s področja, se dosežejo z motorjem po označujočem delu glavnega patentnega zahtevka.It is an object of the present invention to provide an engine in which the tasks required to connect a stator winding or windings to an external electrical network are simplified and facilitated. These and other tasks that will be apparent to one of ordinary skill in the art are accomplished by the engine according to the designation of the main patent claim.

Predloženi izum bo bolj jasen na osnovi neomejujočega primera in s pomočjo predloženih risb, na katerih sl. 1 in 2 predstavljata shematski pogled zvrha na stator motorja po izumu, kije prikazan med setavljanjem in potem, ko je končan.The present invention will be clearer on the basis of the non-limiting example and with the aid of the accompanying drawings, in which: 1 and 2 show a schematic view of the top of the motor stator of the invention shown during sowing and after completion.

Sklicujoč se na omenjeni sliki, prikazujeta tidve običajen stator 1 za običajni indukcijski motor. Stator 1 je na ponazorjenem primeru takšne vrste, da obsega tri navitja, in njihovih šest koncev je treba priključiti na električno omrežje.Referring to the aforementioned figure, they also show a conventional stator 1 for a conventional induction motor. On the illustrated example, stator 1 is of such a type that it comprises three windings, and their six ends must be connected to the mains.

Da se to doseže, se pusti, da del 3 bakrene žice 2 ob koncu statorskih navitij sega iz statorja za dolžino L, ki je zadostna, da dopušča priključitev na zunanje električno omrežje. Da se izvede ta priključek, se običajna izolima plast 4 namesti na odseke 3 žic, tako da se razteza od statorskega navitja prav do prostega konca 3A kosa žice, ki izhaja iz statorja.In order to achieve this, it is allowed that part 3 of the copper wire 2 at the end of the stator windings extends from the stator for length L sufficient to allow connection to an external electrical network. To make this connection, the conventional insulating layer 4 is mounted on sections of 3 wires so that it extends from the stator winding right to the free end of the 3A piece of wire emerging from the stator.

Običajni priključek je togo pritrjen na prosti konec 3A, prednostno z zapogibanjem, zaradi priključitve na električno omrežje. Prednostno se sponka 4 pritrdi tako na bakreno žico kot tudi na konec plasti, da se prepreči premikanje plasti.The normal connection is rigidly attached to the free end of 3A, preferably by bending, for connection to the mains. Preferably, clamp 4 is attached to both the copper wire and the end of the layer to prevent movement of the layer.

Po izumu ni več potrebno zagotoviti dodatnih priključnih elementov med konci statorskih navitij in sponkami 6, pri čemer so ti priključni elementi - povsod so označeni s 5 - izoblikovani, s tem da se uporabi prevodnik - lakirana žica - samih statorskih navitij. Neposredna priključitev se nato izvede med električnim omrežjem in navitji motorja. Izum ima za posledico zmanjšanje tako časa sestavljanja motorja kot tudi števila komponent, ki so potrebne, da se izvede priključitev na zunanje omrežje.According to the invention, it is no longer necessary to provide additional connecting elements between the ends of the stator windings and the terminals 6, these connection elements being everywhere being designated 5 - formed using a conductor - varnished wire - of the stator windings themselves. The direct connection is then made between the mains and the motor windings. The invention results in a reduction in both the assembly time of the motor and the number of components required to connect to an external network.

Kot je poznano strokovnjaku s področja, se prvi del 7A konca 3 prevodnika in pripadajoča prevleka zavarujeta na telesu statorja, medtem ko drugi del 7B sega iz statorja (sl. 2). Del 7A se zavaruje na telesu statorja z običajnimi vezalnimi žicami 6A.As is known to one skilled in the art, the first part 7A of the end 3 of the conductor and the associated coating are secured to the stator body, while the second part 7B extends from the stator (Fig. 2). Part 7A is secured to the stator body by conventional 6A binding wires.

Da se omogoči zavarovanje priključitvenih elementov 5, pa morajo biti priključki 6 enakomerno razmaknjeni, če ima stator, kot je ponazorjeno na primeru, več kot eno navitje, morajo biti priključni elementi 5 različno dolgi, kar vključuje, da se dolžina L kosov žice, ki se raztezajo od statorskih navitij, mora razlikovati od enega do drugega.However, to allow connection elements 5 to be secured, terminals 6 must be spaced evenly, if the stator, as illustrated in the example, has more than one winding, the connection elements 5 must be of different lengths, including that the length L of the wire which extending from the stator windings, it must vary from one to the other.

Omeniti je treba, da poleg tega, da se zagotavlja nadaljnja električna izolacija prevleka 4 tudi ščiti bakreno žico, ki se razteza od navitij, in povečuje njeno mehansko trdnost.It is worth noting that in addition to providing further electrical insulation, the coating 4 also protects the copper wire extending from the windings and increases its mechanical strength.

Motor po izumu ni primeren za uporabo, kjer so priključitveni elementi podvrženi stalnemu in pogostemu premikanju, ker bi se žica 3 lahko v takem primeru prelomila. So pa motorji po izumu zelo primerni za vse uporabe, pri katerih priključitveni elementi niso več podvrženi rokovanju ali premikanju, potem ko je bila izvedena priključitev na zunanje omrežje.The engine according to the invention is not suitable for use where the connection elements are subject to constant and frequent movement because wire 3 could break in such a case. However, the motors of the invention are well suited for all applications where the connection elements are no longer subject to handling or movement after connection to an external network has been made.

Končno je treba omeniti, da je bil prej opisani izvedbeni primer predstavljen kot neomejujoči primer in se izum lahko uporablja pri električnih motorjih katerekoli vrste z enim ali več navitji.Finally, it should be noted that the embodiment described above was presented as a non-limiting example and the invention can be used in electric motors of any kind with one or more windings.

Claims

Patent claims

An electric motor of such a type that it comprises at least one stator winding and at least two elements (5) for electrically connecting the ends of the stator winding to an external electrical network, characterized in that the electrical connecting elements (5) each comprise a portion (3) of the electrical conductor in one piece with varnished stator winding wire to avoid using further connecting elements instead of said conductor parts (3).

Motor according to claim 1, characterized in that the conductor portion (3) comprises a coating (4) made of electrical insulation.

Motor according to claim 1, characterized in that the ends of the stator winding are extended by a part (3) having a length (L) such that the first part (7A) of this end is rigidly welded to the stator, and the second part (7B) of this end is used to connect the clip (6) to an external electrical network, said extension stator winding parts (3) comprising an electrically insulating layer (4), said connection elements (5) comprising said parts (3) of the stator winding, said layer (4) and said clip (6) for connecting the element.

Motor according to claim 3, characterized in that the extension parts (3) of the stator winding are of different lengths (L).

Motor according to claim 3, characterized in that the terminals (6) are rigidly secured at one end (3A) of the part (3) of the electrical conductor extending from the stator windings and to the other end of the layer insulator (4).

6. An electric motor stator of such a type that it comprises at least one stator winding and at least two elements (5) for electrically connecting the ends of the stator winding to an external electrical network according to the marking part of one of claims 1 to 5.