Backpressure-inhibiting device for exhausting apparatus

Abstract

An exhausting apparatus includes a duct defining an exhaust channel having an inlet and an outlet, a first fan mounted in the duct, and a first backpressure-inhibiting device mounted in the duct and located in front of the first fan. The first backpressure-inhibiting device includes a partitioning plate having a plurality of through-holes. A negative pressure area is created between the first backpressure-inhibiting device and the first fan when the first fan is driven. Waste gas exhausting efficiency of the exhausting apparatus is enhanced.

1 . An exhausting apparatus comprising:
 a duct defining an exhaust channel including an inlet and an outlet;   a first fan mounted in the duct and adapted to be driven; and   a first backpressure-inhibiting device mounted in the duct and located in front of the first fan, the first backpressure-inhibiting device including a partitioning plate having a plurality of through-holes;   wherein a negative pressure area is created between the first backpressure-inhibiting device and the first fan when the first fan is driven.   
   
   
       2 . The exhausting apparatus as claimed in  claim 1 , with the first backpressure-inhibiting device further including a plurality of tubes respectively extending through and securely engaged in the through-holes. 
   
   
       3 . The exhausting apparatus as claimed in  claim 2 , with each said tube being integral with the partitioning plate and extending from an inner face of the partitioning plate. 
   
   
       4 . The exhausting apparatus as claimed in  claim 1 , with the backpressure-inhibiting device being mounted in the inlet of the duct. 
   
   
       5 . The exhausting apparatus as claimed in  claim 1 , with an inlet section being defined between the first fan and the inlet, and with the first backpressure-inhibiting device being mounted in the inlet section. 
   
   
       6 . The exhausting apparatus as claimed in  claim 5 , with the exhaust channel of the duct further including an outlet section adjacent to the outlet, with the exhausting apparatus further including a second fan mounted in the outlet section and a second backpressure-inhibiting device mounted in the outlet section and located in front of the second fan, and with a second negative pressure being created between the second fan and the second backpressure-inhibiting device when the second fan is driven to turn. 
   
   
       7 . An exhausting apparatus comprising:
 a hood including a gas inlet, an opening being defined below the hood;   a fan mounted in the hood and adapted to be driven; and   a backpressure-inhibiting device mounted in the opening, the backpressure-inhibiting device including a partitioning plate having a plurality of through-holes;   wherein a negative pressure area is created between the gas inlet and the opening when the fan is driven.   
   
   
       8 . The exhausting apparatus as claimed in  claim 7 , with the backpressure-inhibiting device further including a plurality of tubes respectively extending through and securely engaged in the through-holes. 
   
   
       9 . The exhausting apparatus as claimed in  claim 8 , with each said tube being integral with the partitioning plate and extending from an inner face of the partitioning plate. 
   
   
       10 . The exhausting apparatus as claimed in  claim 8 , with each said tube including a longitudinal hole defining a passage for waste gas to be discharged. 
   
   
       11 . The exhausting apparatus as claimed in  claim 7 , with the hood including two side boards and a bottom board between the side boards, and with the partitioning plate being mounted to the bottom board and below the gas inlet. 
   
   
       12 . The exhausting apparatus as claimed in  claim 11 , with the partitioning plate covering the opening. 
   
   
       13 . The exhausting apparatus as claimed in  claim 7 , with the partitioning plate being arcuate in section. 
   
   
       14 . The exhausting apparatus as claimed in  claim 7 , with the exhausting apparatus further including an exhaust duct, with a filter being mounted in the exhaust duct and including a plurality of filtering members, each said filtering member including a hollow casing and a plurality of through-holes in a spherical wall of the hollow casing. 
   
   
       15 . The exhausting apparatus as claimed in  claim 14 , with each said filtering member further including a plurality of tubes respectively extending into an interior of the hollow casing. 
   
   
       16 . The exhausting apparatus as claimed in  claim 14 , with each said filtering member being a hollow spherical casing. 
   
   
       17 . A backpressure-inhibiting device for an exhausting apparatus, the backpressure-inhibiting device being adapted to be mounted in a duct of the exhausting apparatus, the backpressure-inhibiting device comprising a partitioning plate and a plurality of through-holes, with a tube extending through each said through-hole, allowing waste gas to be exhausted to flow therethrough. 
   
   
       18 . The backpressure-inhibiting device as claimed in  claim 17 , with each said tube extending to an inner side of the backpressure-inhibiting device. 
   
   
       19 . The backpressure-inhibiting device as claimed in  claim 17 , with each said tube including a longitudinal hole defining a passage for the waste gas to be discharged. 
   
   
       20 . The backpressure-inhibiting device as claimed in  claim 17 , with the partitioning plate being arcuate in section.