DK144959B - ELECTRICAL MACHINE DEVICE FOR ELECTRIC MOTORS TO REMOVE CONDENSATION WATER - Google Patents

ELECTRICAL MACHINE DEVICE FOR ELECTRIC MOTORS TO REMOVE CONDENSATION WATER Download PDF

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Publication number
DK144959B
DK144959B DK73074AA DK73074A DK144959B DK 144959 B DK144959 B DK 144959B DK 73074A A DK73074A A DK 73074AA DK 73074 A DK73074 A DK 73074A DK 144959 B DK144959 B DK 144959B
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DK
Denmark
Prior art keywords
housing
condensation water
wall
electric motors
electrical machine
Prior art date
Application number
DK73074AA
Other languages
Danish (da)
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DK73074A (en
DK144959C (en
Inventor
H A Larsen
Original Assignee
H A Larsen
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by H A Larsen filed Critical H A Larsen
Priority to DK73074A priority Critical patent/DK144959C/en
Priority to SE7501550A priority patent/SE399619B/en
Priority to NO750460A priority patent/NO137251C/en
Priority to DE19752505810 priority patent/DE2505810A1/en
Publication of DK73074A publication Critical patent/DK73074A/da
Publication of DK144959B publication Critical patent/DK144959B/en
Application granted granted Critical
Publication of DK144959C publication Critical patent/DK144959C/en

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K2205/00Specific aspects not provided for in the other groups of this subclass relating to casings, enclosures, supports
    • H02K2205/09Machines characterised by drain passages or by venting, breathing or pressure compensating means

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Control Of Multiple Motors (AREA)

Description

(19) DANMARK(19) DENMARK

(12) FREMLÆGGELSESSKRIFT ου 1^959B(12) PRESENTATION WRITING ου 1 ^ 959B

DIREKTORATET FOR PATENT- OG VAREMÆRKEVÆSENETDIRECTORATE OF THE PATENT AND TRADEMARKET SYSTEM

(21) Ansøgning nr. 730/74 (51) |nt.ci» H 02 K 3/44 (22) Indleveringsdag 12. feb. 1974 (24) Løbedag 12. feb. 1974 (41) Aim. tilgængelig 13· aug. 1975 (44) Fremlagt 12. jul. 1982 (86) International ansøgning nr. “ (86) International indleveringsdag -(85) Videreførelsesdag -(62) Sta mansøgning nr. -(30) Prioritet (71) Ansøger HANS ANDREAS LARSEN, 2610 Rødovre, DK.(21) Application No. 730/74 (51) | nt.ci »H 02 K 3/44 (22) Filing date 12 Feb. 1974 (24) Running day Feb 12 1974 (41) Aim. available Aug. 13 1975 (44) Presented 12 Jul. 1982 (86) International application no. ”(86) International filing day - (85) Continuation day - (62) Standing application no. - (30) Priority (71) Applicant HANS ANDREAS LARSEN, 2610 Rødovre, DK.

(72) Opfinder Samme.(72) Inventor Same.

(74) Fuldmægtig Internationalt Patent-Bureau.(74) International Patent Bureau.

(54) Anordning ved elektriske ma^ skiner, fortrinsvis elektro= motorer, til fjernelse af kondensvand.(54) Device by electric machines, preferably electric motors, to remove condensation water.

Opfindelsen angår en anordning ved elektriske maskiner, fortrinsvis elektromotorer, til fjernelse af kondensvand ved hjælp af porøst materiale, der er indsat i en åbning i maskinens hus.The invention relates to a device by electric machines, preferably electric motors, for removing condensation water by means of porous material inserted in an opening in the housing of the machine.

Til brug på steder, hvor der kan optræde fugtighed, udformes sådanne maskiner normalt mere eller mindre vandtæt, således at det undgås, at der trænger vand fra omgivelserne ind i maskinens hus. Da sådanne maskiner imidlertid ikke kan ® være hermetisk lukkede, bl.a. fordi der altid skal føres en roterende aksel ud q gennem husets va^, vil det ikke kunne undgås, at der, som følge af den under drif- D ten optrædende opvarmning og afkøling af maskinen, fremkommer en pumpevirkning, -j· som bevirker, at der fra omgivelserne trænger luft ind i maskinens hus. Da sådan- — ne maskiner ofte arbejder i et fugtigt miljø, vil den indtrængende luft indeholde ^ en stor mængde fugtighed, der fortættes i motorhuset under motorens afkøling og 3 2 U4959 derved danner kondensvand.For use in places where humidity can occur, such machines are usually designed more or less waterproof, so as not to allow ambient water to enter the machine housing. However, since such machines cannot be hermetically sealed, i.a. because a rotating shaft always has to be passed out q through the wall of the housing, it cannot be avoided that due to the heating and cooling of the machine, a pumping effect, air from entering the machine from the surroundings. Since such machines often operate in a humid environment, the penetrating air will contain a large amount of moisture which is condensed in the engine housing during engine cooling, thereby forming condensation water.

Tilsvarende forhold optræder ofte ved maskiner, der på akselen har en ventilator til frembringelse af en luftstrøm til udvendig køling af maskinens hus.Similar conditions often occur with machines having a fan on the shaft to generate an air flow for externally cooling the machine housing.

1 sådanne tilfælde optræder der ofte et undertryk ved akselgennemføringen, hvorved der suges luft ud fra husets indre. Det herved optrædende undertryk bevirker, at der gennem forskellige utætheder strømmer fugtig luft ind i huset, hvor der sker en fortætning af den medførte vanddamp.In such cases, a negative pressure often occurs at the shaft insertion, thereby sucking air out from the interior of the housing. The resulting underpressure causes, through various leaks, moist air to flow into the housing, where condensation of the resulting steam occurs.

Fremkomsten af kondensvand i det indre af maskinens hus har forskellige uheldige virkninger. Dels vil kondensvandet kunne forårsage utilsigtede elektriske forbindelser, der kan medføre kortslutninger eller i det mindste udløsning af fejlstrømsrelæer. Hvis der samler sig større mængder kondensvand i maskinen, vil det af rotoren kunne blive pisket rundt i huset og kunne medføre alvorlige mekaniske skader, f.eks. på viklingernes isolation.The appearance of condensation water in the interior of the machine housing has various adverse effects. In part, the condensation water could cause unintended electrical connections that could cause short circuits or at least trigger the fault current relays. If large quantities of condensation water accumulate in the machine, the rotor could be whipped around the housing and could cause serious mechanical damage, e.g. on the insulation of the windings.

Der kendes en elektromotor, hvis hus ved bunden har en åbning, hvori der er indsat en forskruning med en prop af porøst materiale. Gennem en sådan prop kan kun udlades kondensvand, der står direkte hen over proppen. Den kan endvidere ikke virke, hvis der er blot et lille undertryk i huset.An electric motor is known, whose housing at the bottom has an opening in which a screw with a plug of porous material is inserted. Through such a plug only condensation water can be discharged, which stands directly over the plug. Furthermore, it may not work if there is only a small vacuum in the house.

Ved den foreliggende opfindelse tilsigtes disse ulemper afhjulpet.In the present invention, these disadvantages are intended to be remedied.

Dette opnås ifølge opfindelsen ved, at det porøse materiale udgøres af en væge, der gennem åbningen strækker sig fra et sted i husets indre, hvor der under maskinens drift vil samle sig kondensvand, til husets yderside. Ved hjælp af vægen opsuges kondensvandet effektivt fra det sted, hvor det samler sig, og føres gennem åbningen uden for maskinens hus, hvor det fordamper eller drypper fra vægen. Da vsgen virker som om den var en hævert, vil den også kunne fungere, selv om der findes et mindre undertryk i husets indre.This is achieved according to the invention in that the porous material is constituted by a wick extending through the opening from a place in the interior of the housing, where condensation water will accumulate during the operation of the machine, to the outside of the housing. By means of the wall, the condensation water is effectively absorbed from the place where it collects and is passed through the opening outside the machine's house where it evaporates or drips from the wall. Since the veneer looks like it was a siphon, it will also be able to function, although there is a slight negative pressure in the interior of the house.

Vægen kan ifølge opfindelsen hensigtsmæssigt have midler, f.eks. fortykkelser, der forhindrer, at den utilsigtet trækkes gennem åbningen. Fortykkelsen kan f.eks. være tilvejebragt ved, at der er slået en knude på vægen. Det kan også dreje sig om en ved vægens fremstilling tilvejebragt fortykkelse. Endelig kan det være et legeme, f.eks. en klemme, der er anbragt på vægen.According to the invention, the wall may suitably have means, e.g. thickening that prevents it from being accidentally pulled through the opening. The thickening may e.g. be provided by a knot on the wall. It may also be a thickening provided in the manufacture of the wall. Finally, it can be a body, e.g. a clamp placed on the wall.

Opfindelsen forklares nærmere i det følgende under henvisning til den skematiske tegning, hvor fig. 1 viser et snit gennem en elektromotor, der er udformet i overensstem 3 U49S9 melse med den foreliggende opfindelse, fig. 2 et tætningsorgan til et ventilationshul i motoren og fig. 3 et snit i større målestok gennem en del af en anden udføreIsesform for en sådan motor#The invention is explained in more detail below with reference to the schematic drawing, in which fig. 1 is a section through an electric motor designed in accordance with the present invention; FIG. 2 shows a sealing means for a ventilation hole in the motor and FIG. 3 is an enlarged sectional view through part of another embodiment of such an engine #

Den i fig. 1 viste elektromotor har et motorhus 1, hvori der er anbragt en stator 2, og hvori der ved hjælp af kuglelejer 3 og 4 er lejret en aksel 5, der bærer en rotor 6 og et ventilatorhjul 7.The FIG. 1, an electric motor 1 has a motor housing 1 in which a stator 2 is arranged and in which a shaft 5 bearing a rotor 6 and a fan wheel 7 is mounted by ball bearings 3 and 4.

Hvis der opstår kondensvand i motorhusets indre, vil dette ad husets inder-væg drive ned mod husets bund, hvori der er to huller 8 og 9, hvorigennem de to ender 10 og 11 af en lang væge 12 er ført. Den midterste del af vægen 12 strækker sig gennem en kanal 13, der er udformet i statoren. Kanalen 13 medfører, at der kan strømme vand fra motorhusets ene ende til den anden. Vægen behøver ikke at strække sig gennem kanalen 12, men kan være opdelt i to separate væger anbragt i hvert sit hul. De fra motorhuset udragende ender 10 og 11 af vægen kan være udformet med fortykkelser, så de ikke kan passere gennem hullerne 8 og 9. Fortykkelserne kan f.eks. udgøres af knuder eller af legemer, der er påsat vægen.If condensation water occurs in the interior of the motor housing, this will drive down the inner wall of the housing towards the bottom of the housing, in which there are two holes 8 and 9, through which the two ends 10 and 11 of a long wall 12 are passed. The middle portion of the wall 12 extends through a channel 13 formed in the stator. The duct 13 causes water to flow from one end of the motor housing to the other. The wall does not have to extend through the channel 12, but can be divided into two separate walls arranged in each hole. The ends 10 and 11 of the wall projecting from the motor housing may be provided with thickening so that they cannot pass through holes 8 and 9. is made up of nodes or bodies affixed to the wall.

Som forklaret ovenfor kan der i maskiner af den omhandlede art optræde et vist undertryk i husets indre, og et sådant undertryk kan i visse tilfælde modvirke vægens evne til at suge vand ud fra huset. Der kan derfor i husets væg vare tilvejebragt ventilationsåbninger, der i den viste udførelsesform er lukket med porøse propper 14 og 15. Gennem disse ventilationsåbninger kan der endvidere tillades en vis indre køling af rotoren, hvilket kan understøtte den med ventilatorhjulet 7 tilvejebragte ydre køling.As explained above, in certain machines of the kind in question, a certain negative pressure may occur in the interior of the housing, and such negative pressure can in some cases counteract the ability of the wall to draw water out of the housing. Therefore, ventilation openings may be provided in the wall of the housing, which in the illustrated embodiment is closed with porous plugs 14 and 15. Furthermore, through these ventilation openings some internal cooling of the rotor can be allowed, which can support the external cooling provided with the fan wheel 7.

I fig. 2 er vist en anden udføreIsesform for et tætningsorgan til et ventilationshul. Det er udformet som en labyrinttætning med et rør 21, der er bestemt til at lndskrues i et hul i motorhuset 1, og son på siden har to huller 22 og 23, der udmunder i en bægerformet del 24, som er anbragt på den ene ende af røret. En del af bægeret kan være fyldt med porøst materiale 25 som vist. Med denne konstruktion er det sikret, at regn, spulevand, sne og kryb ikke kan trænge ind i motoren.In FIG. 2 shows another embodiment of a sealing means for a ventilation hole. It is designed as a labyrinth seal with a tube 21 intended to be screwed into a hole in the motor housing 1, and the lateral zone has two holes 22 and 23 which open into a cup-shaped portion 24 disposed on one end. of the tube. Part of the beaker may be filled with porous material 25 as shown. With this construction, it is ensured that rain, rinsing water, snow and creep cannot enter the engine.

I den i fig. 3 viste udføreIsesform er der i motorhuset 1 udformet en fordybning 16, hvori kondensvand, der dannes inde i huset, vil samle sig. Ved det laveste punkt af fordybningen har husets væg en knast 17, hvori der er anbragt en forskruning 18 med et centralt hul, hvorigennem en væge 19 er ført. Vågen er sikret mod at blive trukket ud af forskruningen ved hjælp af en knude 20.In the embodiment shown in FIG. 3, a recess 16 is formed in the motor housing 1 in which condensation water formed inside the housing will collect. At the lowest point of the recess, the wall of the housing has a cam 17, in which is arranged a screw 18 with a central hole through which a wall 19 is passed. The guard is secured against being pulled out of the socket by means of a knot 20.

Den viste konstruktion har den fordel, at vægen let kan udskiftes. For at sikre vægen mod at blive trukket ind i motorhuset kan også den uden for forskruningen ragende del have en fortykkelse, f.eks. en knude.The construction shown has the advantage that the wall can be easily replaced. In order to secure the wall against being drawn into the motor housing, the outside part of the screw may also have a thickening, e.g. a knot.

Anbringelsesstederne for vægegennemføringshullerne og ventilationshullerneThe locations of the wall feed holes and the ventilation holes

DK73074A 1974-02-12 1974-02-12 DEVICE FOR ELECTRICAL MACHINES, PRESENTLY ELECTRIC MOTORS, FOR THE REMOVAL OF CONDENSATION WATER DK144959C (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DK73074A DK144959C (en) 1974-02-12 1974-02-12 DEVICE FOR ELECTRICAL MACHINES, PRESENTLY ELECTRIC MOTORS, FOR THE REMOVAL OF CONDENSATION WATER
SE7501550A SE399619B (en) 1974-02-12 1975-02-12 DEVICE FOR REMOVING CONDENSING WATER FROM AN ELECTRICAL MACHINE
NO750460A NO137251C (en) 1974-02-12 1975-02-12 DEVICE FOR ELECTRICAL MACHINES, PREFERRED ELECTRIC MOTORS, FOR REMOVAL OF CONDENSING WATER
DE19752505810 DE2505810A1 (en) 1974-02-12 1975-02-12 Electromotor has condensed water removed from inside housing - by porous wick that soaks up water and deposits it outside

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK73074 1974-02-12
DK73074A DK144959C (en) 1974-02-12 1974-02-12 DEVICE FOR ELECTRICAL MACHINES, PRESENTLY ELECTRIC MOTORS, FOR THE REMOVAL OF CONDENSATION WATER

Publications (3)

Publication Number Publication Date
DK73074A DK73074A (en) 1975-10-13
DK144959B true DK144959B (en) 1982-07-12
DK144959C DK144959C (en) 1982-11-29

Family

ID=8096880

Family Applications (1)

Application Number Title Priority Date Filing Date
DK73074A DK144959C (en) 1974-02-12 1974-02-12 DEVICE FOR ELECTRICAL MACHINES, PRESENTLY ELECTRIC MOTORS, FOR THE REMOVAL OF CONDENSATION WATER

Country Status (4)

Country Link
DE (1) DE2505810A1 (en)
DK (1) DK144959C (en)
NO (1) NO137251C (en)
SE (1) SE399619B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104885338A (en) * 2012-12-11 2015-09-02 万高电机设备公司 Drainage system for electric machines, and electric machines comprising same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6216758Y2 (en) * 1980-03-21 1987-04-27

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104885338A (en) * 2012-12-11 2015-09-02 万高电机设备公司 Drainage system for electric machines, and electric machines comprising same
EP2933904A4 (en) * 2012-12-11 2016-09-07 Weg Equipamentos Elétricos S A Motores Drainage system for electric machines, and electric machines comprising same

Also Published As

Publication number Publication date
SE7501550L (en) 1975-08-13
SE399619B (en) 1978-02-20
DE2505810A1 (en) 1975-08-14
DK73074A (en) 1975-10-13
NO137251B (en) 1977-10-17
NO750460L (en) 1975-08-13
DK144959C (en) 1982-11-29
NO137251C (en) 1978-01-25

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