Ventilation apparatus and installations

Abstract

A toilet ventilation apparatus in the form of a kit of parts has a hollow body providing an internal chamber and an opening at one end to provide an air inlet to the internal chamber, with provision for mounting the hollow body onto a w.c. pan below the rear of a pan seat with the opening directed forwardly of the w.c., and with a conduit for connection between the chamber and an extractor fan. The chamber has plural exit apertures for noxious air collected by the chamber, and one or more blanking members to close one or more of the exit apertures not in use, and the conduit is selectively connectable to any one of the exit apertures to convey odors from the chamber to the extractor fan.

1 . Toilet ventilation apparatus comprising a hollow body providing an internal chamber and having an opening at one end to provide an air inlet to the internal chamber, means for mounting the hollow body onto a w.c. pan below the rear of a pan seat with said opening directed forwardly of the w.c., and conduit means for connection between the chamber and an extractor fan, characterized in that the chamber has a plurality of exit apertures for noxious air collected by the chamber, one or more blanking members to close one or more of the exit apertures not in use, and in that the conduit means comprises a conduit element selectively connectable to any one of the exit apertures conveying noxious air from the chamber towards said extractor fan.  
   
   
       2 . Toilet ventilation apparatus according to  claim 1 , wherein the chamber has N exit apertures and N−1 blanking members are provided for closing the or each exit aperture not in use.  
   
   
       3 . Toilet ventilation apparatus according to  claim 1 , wherein said apparatus is provided in the form of a kit of parts including a plurality of different mounting means selectively utilizable for mounting the hollow body onto a w.c. pan.  
   
   
       4 . Toilet ventilation apparatus according to  claim 2 , wherein said apparatus is provided in the form of a kit of parts including a plurality of different mounting means selectively utilizable for mounting the hollow body onto a w.c. pan.  
   
   
       5 . Toilet ventilation apparatus according to  claim 3 , wherein said plurality of different mounting means comprises: 
 (a) one or more double-sided adherent pads for disposition between the rim of the w.c. pan and the underside of the hollow body, and    (b) a pair of laterally extending lugs integral with, but separable from the hollow body and to be clamped between the pan and the seat by seat mounting bolts.    
   
   
       6 . Toilet ventilation apparatus according to  claim 4 , wherein the mounting means (b) further comprises a pair of hollow bushes of generally T-shaped axial cross-section serving as hollow “bolts” to fasten the lateral lugs of (b) to the w.c. pan and to permit independent attachment of the seat by separate seat mounting bolts extending through the hollow bushes.  
   
   
       7 . Toilet ventilation apparatus according to  claim 5 , wherein the mounting means (b) further comprises a pair of hollow bushes of generally T-shaped axial cross-section serving as hollow “bolts” to fasten the lateral lugs of (b) to the w.c. pan and to permit independent attachment of the seat by separate seat mounting bolts extending through the hollow bushes.  
   
   
       8 . Toilet ventilation apparatus according to  claim 4 , wherein said plurality of different mounting means comprises: 
 (a) one or more double-sided adherent pads for disposition between the rim of the w.c. pan and the underside of the hollow body, and    (b) a pair of laterally extending lugs integral with, but separable from the hollow body and to be clamped between the pan and the seat by seat mounting bolts.    
   
   
       9 . Toilet ventilation apparatus according to  claim 8 , wherein the mounting means (b) further comprises a pair of hollow bushes of generally T-shaped axial cross-section serving as hollow “bolts” to fasten the lateral lugs of (b) to the w.c. pan and to permit independent attachment of the seat by separate seat mounting bolts extending through the hollow bushes.  
   
   
       10 . Toilet ventilation apparatus in the form of a kit of parts including: 
 a hollow body providing a chamber therein and having at one end an opening to provide an inlet to the chamber, said body being dimensioned to suit it for fitment onto a w.c. pan below the pan's seat; and    at least first and second mounting means for the body and of which selectively all but one may be rendered redundant for said fitment.    
   
   
       11 . Toilet ventilation apparatus according to  claim 10 , wherein said first and second mounting means comprise: 
 (a) one or more double-sided adherent pads for disposition between the rim of the w.c. pan and the underside of the hollow body, and    (b) a pair of laterally extending lugs integral with, but separable from the hollow body and to be clamped between the pan and the seat by seat mounting bolts.    
   
   
       12 . Toilet ventilation apparatus according to  claim 11 , wherein the mounting means (b) further comprises a pair of hollow bushes of generally T-shaped axial cross-section serving as hollow “bolts” to fasten the lateral lugs of (b) to the w.c. pan and to permit independent attachment of the seat by separate seat mounting bolts extending through the hollow bushes.