Ribbed sheet metal shell for rotating electrical machines
The invention relates to a ribbed sheet metal shell for rotating electrical machines, the curved portion of which consists of an arched steel sheet on which cooling ribs are formed by compressed folds of the said sheet. To improve mechanical strength and the effectiveness of cooling of the shell, th...
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| Format: | Patent |
| Sprache: | eng ; fre |
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| Zusammenfassung: | The invention relates to a ribbed sheet metal shell for rotating electrical machines, the curved portion of which consists of an arched steel sheet on which cooling ribs are formed by compressed folds of the said sheet. To improve mechanical strength and the effectiveness of cooling of the shell, the curved portion 1 is formed by a prismatic surface containing a number of lateral faces equal to the number of cooling ribs 2 placed on lateral edges of the said prismatic surface; the cooling ribs are stiffened by a longitudinal weld preferably placed on the inner surface of the curved portion of the shell.
L'INVENTION CONCERNE UNE CARCASSE EN TOLE METALLIQUE NERVUREE POUR MACHINES ELECTRIQUES TOURNANTES, DONT LA PARTIE INCURVEE EST CONSTITUEE PAR UNE TOLE D'ACIER CINTREE SUR LAQUELLE DES NERVURES DE REFROIDISSEMENT SONT FORMEES PAR DES PLIS COMPRIMES DE LADITE TOLE.POUR AMELIORER LA RESISTANCE MECANIQUE ET L'EFFICACITE DE REFROIDISSEMENT DE LA CARCASSE, LA PARTIE INCURVEE 1 EST FORMEE PAR UNE SURFACE PRISMATIQUE COMPORTANT UN NOMBRE DE FACES LATERALES EGAL AU NOMBRE DE NERVURES DE REFROIDISSEMENT 2 PLACEES SUR DES BORDS LATERAUX DE LADITE SURFACE PRISMATIQUE; LES NERVURES DE REFROIDISSEMENT SONT RAIDIES PAR UNE SOUDURE LONGITUDINALE, PLACEE DE PREFERENCE SUR LA SURFACE INTERIEURE DE LA PARTIE INCURVEE DE LA CARCASSE. |
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