Housing for a ventilator or fan

Abstract

The invention relates to a housing for a ventilator ( 1 ) or fan, in particular an axial ventilator, comprising an annular housing wall ( 2 ) which encloses a flow channel ( 3 ) having an inflow opening ( 4 ) and an outflow opening ( 6 ). The flow channel ( 3 ) has a circular cross-section in a plane which is perpendicular to a center longitudinal axis (X-X) and a motor mount ( 7 ) for an electrical motor ( 8 ) of the ventilator ( 1 ) within the flow channel ( 3 ). The flow channel ( 3 ) has a first cylinder section ( 9 ), connected to the inflow opening ( 4 ), and a second truncated cone section ( 11 ), connected thereto by the small truncated cone surface, which expands toward the outflow opening ( 6 ). The mount ( 7 ) consists of a plurality of stays ( 12 ), fastened by one end to the second truncated cone section ( 11 ), which extend from an inner circumferential surface of the truncated cone section ( 11 ) in the direction of the longitudinal axis (X-X) and have, on the other, internal ends, mount sections for the electrical motor ( 8 ). According to the invention, there are fastening means ( 24, 26 ) of the housing wall ( 2 ) in the region of the inflow opening ( 4 ) for connection to a connection part, in particular a wall ring ( 49 a, b, c, d ) and having fastening means ( 28 ) in the edge region of the outflow opening ( 6 ) thereof for a protective grate ( 23 ) and/or fastening means ( 29, 31 ) for fastening an outside diffuser ( 37 ) to the housing wall ( 2 ) in the region of the outflow opening ( 6 ).

1 . A housing for a fan ( 1 ) or blower, especially an axial fan, comprising an annular housing wall ( 2 ) that surrounds a flow channel ( 3 ) with an inflow opening ( 4 ) and an outflow opening ( 6 ), whereby the flow channel ( 3 ) has a circular cross section in a plane that is perpendicular to a central longitudinal axis (X-X), also comprising a motor mount ( 7 ) for an electric motor ( 8 ) of the fan ( 1 ) inside the flow channel ( 3 ), characterized in that the flow channel ( 3 ) has a first cylindrical section ( 9 ) that adjoins the inflow opening ( 4 ) as well as a second truncated conical section ( 11 ) which, with its small truncated conical surface, adjoins the first section and widens towards the outflow opening ( 6 ), whereby the mount ( 7 ) consists of several struts ( 12 ) that are attached at one end to the second truncated conical section ( 11 ), that run from an inner circumferential surface of the second truncated conical section ( 11 ) in the direction of the longitudinal axis (X-X), and that have mounting sections for the electric motor ( 8 ) at their other, inner ends, and there are fastening means ( 24 ,  26 ) of the housing wall ( 2 ) in the area of the inflow opening ( 4 ) for joining to a connecting part, especially a wall ring ( 49   a, b, c, d ), as well as fastening means ( 28 ) in the edge area of its outflow opening ( 6 ) for a protective grill ( 23 ) and/or fastening means ( 29 ,  31 ) for attaching an external diffuser ( 37 ) to the housing wall ( 2 ) in the area of the outflow opening ( 6 ). 
     
     
         2 - 10 . (canceled) 
     
     
         11 . A housing for a fan ( 1 ) or blower, especially an axial fan, comprising an annular housing wall ( 2 ) that surrounds a flow channel ( 3 ) with an inflow opening ( 4 ) and an outflow opening ( 6 ), whereby the flow channel ( 3 ) has a circular cross section in a plane that is perpendicular to a central longitudinal axis (X-X), and it also relates to a motor mount ( 7 ) for an electric motor ( 8 ) of the fan ( 1 ) inside the flow channel ( 3 ), whereby the flow channel ( 3 ) has a first cylindrical section ( 9 ) that adjoins the inflow opening ( 4 ) as well as a second truncated conical section ( 11 ) which, with its small truncated conical surface, adjoins the first section and widens towards the outflow opening ( 6 ), whereby the mount ( 7 ) consists of several struts ( 12 ) that are attached at one end to the second truncated conical section ( 11 ), that run from an inner circumferential surface of the second truncated conical section ( 11 ) in the direction of the longitudinal axis (X-X), and that have mounting sections for the electric motor ( 8 ) at their other, inner ends, characterized in that there are fastening means ( 24 ,  26 ) of the housing wall ( 2 ) in the area of the inflow opening ( 4 ) for joining to a connecting part, as well as fastening means ( 28 ) in the edge area of its outflow opening ( 6 ) for a protective grill ( 23 ) and fastening means ( 29 ,  31 ) for attaching an external diffuser ( 37 ) to the housing wall ( 2 ) in the area of the outflow opening ( 6 ). 
     
     
         12 . The housing according to  claim 11 , characterized in that the struts ( 12 ), starting from the inner circumferential surface of the truncated conical section ( 11 ), have strut sections ( 14 ) running parallel to the opening plane of the outflow opening ( 6 ), and these strut sections ( 14 ) adjoin angled sections ( 16 ) that run in the direction of the first cylindrical section ( 9 ) at an acute angle to the opening plane, the holding sections being formed at the free ends of said angled sections ( 16 ), whereby the holding sections are especially combined to form a continuous holding ring ( 13 ) whose inner diameter is adapted to the outer diameter of the electric motor ( 8 ). 
     
     
         13 . (Ne) The housing according to  claim 12 , characterized in that the holding ring ( 13 ), with its opening plane that is perpendicular to the longitudinal axis (X-X), runs in the transition area from the first cylindrical section ( 9 ) to the second truncated conical section ( 11 ). 
     
     
         14 . The housing according to  claim 11 , characterized in that three to eight struts ( 12 ) are configured along the circumference at equal distances from each other. 
     
     
         15 . The housing according to  claim 11 , characterized in that the housing wall ( 2 ), including the struts ( 12 ) and the holding ring ( 13 ) as well as the various fastening means ( 24 ,  28 ,  29 ,  31 ) are configured as a one-piece plastic molded part. 
     
     
         16 . The housing according to  claim 11 , characterized in that the first cylindrical section ( 9 ), starting from the inflow opening ( 4 ), has a front channel section ( 44 ) that has a larger inner diameter than a rear channel section ( 46 ) that adjoins it via a step, whereby said rear channel section ( 46 ) has a stop step ( 47 ) configured to decrease the diameter, and it makes a transition to the channel section ( 48 ) that runs in a transition area from the cylindrical section ( 9 ) to the truncated conical section ( 11 ). 
     
     
         17 . The housing according to  claim 11 , characterized in that an external diffuser ( 34 ) can be attached to the housing wall ( 2 ) in the area of the outflow opening ( 6 ) by means of a plug-in connection. 
     
     
         18 . The housing according to  claim 11 , characterized in that the protective grill ( 33 ) can be attached to the annular housing wall ( 2 ) in the area of the outflow opening ( 6 ) by means of a screwed connection. 
     
     
         19 . The housing according to  claim 11 , characterized in that a wall ring ( 49   a, b, c, d ) can be attached to the housing wall ( 2 ) in the area of the front channel section ( 44 ) or in the area of the channel section ( 46 ) by means of a nozzle-like projection ( 51   a, b, c, d ) and/or in the area of the inflow opening ( 4 ) via a screwed connection by means of sleeve-like projections ( 26 ) on the outer circumference of the cylindrical section ( 29 ). 
     
     
         20 . The housing according to  claim 11 , characterized in that, inside the external diffuser ( 34 ),there is an internal diffuser ( 42 ) that is attached at one end to the motor mount ( 7 ) and at the other and to a protective grill ( 23 ) that covers the external diffuser ( 34 ) at its outlet opening ( 37 ). 
     
     
         21 . The housing according to  claim 11 , cl characterized in that the connecting part is a wall ring ( 49   a, b, d ).