Ventilating hood

A fume ventilating hood for use in conjunction with a heating apparatus or the like for attaining ventilation in the region upwardly of such an apparatus and for removing its generated fumes, comprising, a housing, said housing having at least front and side walls, a top structural means for the housing, said top structural means comprising the top wall of the apparatus, a supply inlet communicating with said housing for conveying fresh air to the same, and an exhaust outlet also communicating with the housing for removing the combined air and fumes from the region above the apparatus, a diverter means for the housing and interconnecting between the said inlet and outlet and being uniformly singularly planar in configuration and useful for directing the incoming fresh air towards the front of the housing, a rear support for the housing and connecting in proximity with the said exhaust outlet, a shallow filter held by the said rear support, said diverter means being inclined in its positioning within the hood, with the upper end of said diverter means being located in proximity with the rear support, while the lower end of said diverter means being disposed proximate the front of the said housing, a diffuser means interconnecting between the top wall of the apparatus and the approximate lower segment of the diverter means, said shallow filter being substantially less than one half of the length of the diverter means, the upper end of the diverter means terminating within the region directly in front of the said filter so as to provide for the unencumbered flow of the accumulated air and fumes directly into the exhaust outlet without any obstruction other than that provided by the said filter, and a deflecting means connecting approximately at the lower front of the housing and spaced from the lower edge of the diverting means and useful for redirecting the diverted incoming air directly towards the outlet disposed filter in parallel flow with the underside of the uniformity singularly planar diverter means for creation of an air boundary layer therewith without generating any substantial vortexing of said air for its eventual exhausting of the now combined air and fumes from the said hood,

• said deflecting means extends rearwardly from its connection with the lower end of the front wall and in a direction inclined substantially approximately towards the said filter, a second deflecting means arranged in proximity with the said first named deflecting means and forming an air space therebetween of substantially small dimensions than the space between the lower edge of the diverter means and said first deflecting means, said second deflecting means including a first part arranged substantially in parallel and upwardly of the first deflecting means, and a second integral part extending substantially downwardly for diverting a minor segment of air flowing therethrough in a direction downwardly of the hood, said second deflecting means being useful for directing said minor segment of the flowing air substantially downwardly for forming an inner shield in the front of the apparatus and for confinement of its heat thereby enhancing its attraction to the exhaust outlet of the hood.