SPIRIT TYPE TUBES FOR FANS WITH AN IMPROVED SYSTEM FOR CONNECTING TO THE BOILER DESIGN OR THOSE SIMILAR

摘要

1. A nozzle (1) of the type snail, in particular for electric fans, which are intended for use in boilers, comprising a nozzle body that is made of pressed sheet metal, and connecting means (5) that can be attached to the housing so that connect the pipe to the boiler structure, characterized in that the connecting means comprise at least one connecting protruding element (7), which is structurally independent of the pipe body (1), and at least one corresponding e jack (8) which is formed on the nozzle housing and which can locate with a corresponding unidirectional positioning connecting the projecting member (7), wherein the fastening means are provided between the projecting member (7) and the housing for rigid connection of the projecting member to the pipe (1). ! 2. A snail-type pipe according to claim 1, in which at least one socket (8) is made on the pipe body during the sheet metal stamping operation for manufacturing the body. ! 3. A snail-type pipe according to claim 1 or 2, in which the pipe body contains a pair of half-casings (1a, 1b) of the pipe, which can be connected to each other, while on one of the cases a side inlet (2a) of the fan is made, when this, at least one connecting protruding element (7) is made with the possibility of attachment to the half-shell (1A), including the inlet (2A). ! 4. The pipe according to claim 1, in which at least one socket (8) is made in the form of a surface recess, configured to accommodate at least a portion of the connecting protruding �