Supply-air wall duct

Abstract

The invention relates to a supply-air wall duct ( 1 ), for installation in a building wall ( 7 ) to be provided with ducting, with a wall outside ( 71 ) and a wall inside ( 72 ), with a channel ( 2 ) with an outside end ( 21 ) sucking in the outside air at the wall outside ( 71 ) and with an inside end ( 22 ) for delivering the sucked-in air at the wall inside ( 72 ) to a heat-producing appliance/internal combustion engine ( 8 ) located in an inner region behind the wall ( 7 ), there being provided in the channel ( 2 ) at least one flap ( 31, 32 ) or lamella, by means of which the channel ( 2 ) can be closed for the supply air fed from outside, wherein an actuating device ( 6 ) which actuates the flap(s) ( 31, 32 ) or the lamella(s) is provided, wherein the channel ( 2 ) delivers the sucked-in air at its inside end ( 22 ), and that at least one bypass opening ( 91 b, 92 b ) which opens into the inner region and has bypass closure device(s), in particular bypass flap(s) ( 91, 92 ), is/are disposed on an inside end portion ( 4 ) of the channel ( 2 ), wherein the actuating device ( 6 ) is coupled mechanically with the bypass flap(s) ( 91, 92 ) in such a way that the bypass flap(s) ( 91, 92 ) is/are opened or closed, just as the at least one flap(s) ( 31, 32 ) or lamella(s) in the channel ( 2 ) are conversely closed or opened in the opposite direction thereto.

1 . A supply-air wall duct, for installation in a building wall to be provided with ducting, with a wall outside and a wall inside, with a channel with an outside end sucking in the outside air at a wall outside and with an inside end for delivering the sucked-in air at the wall inside to a heat-producing appliance/internal combustion engine located in an inner region behind the wall, there being provided in the channel at least one flap or lamella, by means of which the channel can be closed for the supply air fed from outside, wherein an actuating device which actuates the flap(s) or the lamella(s) is provided,
 wherein the channel delivers the sucked-in air at its inside end, and that at least one bypass opening which opens into the inner region and has bypass closure device(s), in particular bypass flap(s), is/are disposed on an inside end portion of the channel, wherein the actuating device is coupled mechanically with the bypass flap(s) in such a way that the bypass flap(s) is/are opened or closed, just as the at least one flap(s) or lamella(s) in the channel are conversely closed or opened in the opposite direction thereto.   
     
     
         2 . The supply-air wall duct according to  claim 1 ,
 wherein the channel has a defined opening width at its inside end for the delivery of the sucked-in air, wherein the bypass opening(s) which open into the inner region has/have (together) at least 70%, preferably 100%, of the defined opening width of the channel.   
     
     
         3 . The supply-air wall duct according to  claim 1 ,
 wherein the actuating device can be actuated by an electromotive actuator preferably provided for this purpose or manually by an operator element disposed on the inside end portion and projecting outwards through the latter.   
     
     
         4 . The supply-air wall duct according to  claim 1 ,
 wherein the actuating device is coupled mechanically by a linkage with the flap(s), or lamella(s) inside the channel.   
     
     
         5 . The supply-air wall duct according to  claim 1 ,
 wherein the actuating device is coupled mechanically by a linkage with the bypass flap(s) inside the channel.   
     
     
         6 . The supply-air wall duct according to  claim 4 ,
 wherein the linkage of the flap(s) is constituted symmetrical and is attached to two attachment points located on the flap spaced apart from the swivel pin of the flaps.   
     
     
         7 . The supply-air wall duct according to  claim 5 ,
 wherein the linkage of the bypass flap(s) is constituted twofold, in particular symmetrically, and is attached to two points located on the flap spaced apart from the swivel pin of the bypass flap(s).   
     
     
         8 . The supply-air wall duct according to  claim 1 ,
 wherein two flaps coupled mechanically with one another in parallel are provided in the supply air path one behind the other in the channel.   
     
     
         9 . The supply-air wall duct according to  claim 1 ,
 wherein the flap(s) and bypass flap(s) are mounted swivellable or rotatable on swivel pins mounted in the channel.   
     
     
         10 . The supply-air wall duct according to  claim 9 ,
 wherein at least one spring is disposed on the swivel pins of the bypass flap(s) or the flap(s), said spring(s) being pretensioned in such a way that the flap(s) are held in the “open” position or are brought into this position and the bypass flap(s) are held in the “closed” position or are brought into this position.   
     
     
         11 . The supply-air wall duct according to  claim 1 ,
 wherein the opening width of the bypass opening(s) amounts to at least 30 square centimetres.   
     
     
         12 . The supply-air wall duct according to  claim 1 ,
 wherein an arresting element is provided for fixing the operator element or the actuating device or the flap(s) or bypass flap(s), said arresting element permitting fixing only in two end positions as the position of the flaps as “completely opened” or “completely closed”.   
     
     
         13 . The supply-air wall duct according to  claim 1 ,
 wherein the end piece of the inside end portion of the channel is constituted as a pipe extension piece and is constituted as an add-on part onto the inside end portion, wherein the axis of the channel has a selectable offset with respect to the axis of the pipe extension piece.