Heating system for a device for killing insects

Abstract

A heating system for a device for killing insects includes an air heater and two fans that are combined in an air heater and circulation fan assembly. The air heater and circulation fan assembly is attachable to a top interior side of a sealed enclosure. The air heater and circulation fan assembly includes a housing that contains a motor that drives a single rotating shaft that turns the blades of a first fan for drawing air from an interior space of the sealed enclosure into the housing and a second fan for pushing air from the housing through or by an electrical device that generates heat to heat the air. The second fan moves the heated air through an air duct system having at least one air duct for moving the heated air to at least one opening in the air duct system located in the vicinity of a lowest part of the interior space of the sealed enclosure.

What is claimed is: 
     
         1 . A heating system for a device for killing insects wherein the heating system comprises an air heater and two fans that are combined in an air heater and a circulation fan assembly, the air heater and circulation fan assembly being attachable to a top interior side of a sealed enclosure, the air heater and circulation fan assembly comprising a housing that contains a motor that drives a single rotating shaft that turns the blades of a first fan for drawing air from an interior space of the sealed enclosure into the housing though an opening onto the housing and a second fan for pushing air from the housing through or by an electrical device that generates heat to heat the air and push the air through an air duct system comprising at least one air duct for moving the heated air to at least one opening in the air duct system located in a vicinity of a lowest part of the interior space of the sealed enclosure. 
     
     
         2 . The heating system for a device for killing insects according to  claim 1  wherein the at least one air duct has a substantially horizontally extending portion that is fixed to the housing of the air heater and circulation fan assembly and a substantially vertically extending portion that extends from the horizontally extending portion to the vicinity of the lowest part of the interior space of the sealed enclosure. 
     
     
         3 . The heating system for a device for killing insects according to  claim 1  wherein heating system comprises a plurality of air ducts with each of the air ducts having a substantially horizontally extending portion that is fixed to the housing of the air heater and circulation fan assembly and a substantially vertically extending portion that extends from the horizontally extending portion to the vicinity of the lowest part of the interior space of the sealed enclosure. 
     
     
         4 . The heating system for a device for killing insects according to  claim 2  wherein the substantially vertically extending portion of the at least one air duct is adjacent at least one interior side of the sealed enclosure that extends at least substantially vertically. 
     
     
         5 . The heating system for a device for killing insects according to  claim 3  wherein the substantially vertically extending portion of each of the plurality of air ducts is adjacent at least one interior side of the sealed enclosure that extends at least substantially vertically. 
     
     
         6 . The heating system for a device for killing insects according to  claim 1  further comprising at least one sensor for sensing the temperature of heated air in the enclosure, and a controller for controlling the operation of an air heater and circulation fan assembly based at least in part on data provided by the at least one sensor. 
     
     
         7 . The heating system for a device for killing insects according to  claim 2  further comprising at least one sensor for sensing the temperature of heated air in the enclosure, and a controller for controlling the operation of an air heater and circulation fan assembly based at least in part on data provided by the at least one sensor. 
     
     
         8 . The heating system for a device for killing insects according to  claim 3  further comprising at least one sensor for sensing the temperature of heated air in the enclosure, and a controller for controlling the operation of an air heater and circulation fan assembly based at least in part on data provided by the at least one sensor. 
     
     
         9 . The heating system for a device for killing insects according to  claim 4  further comprising at least one sensor for sensing the temperature of heated air in the enclosure, and a controller for controlling the operation of an air heater and circulation fan assembly based at least in part on data provided by the at least one sensor. 
     
     
         10 . The heating system for a device for killing insects according to  claim 5  further comprising at least one sensor for sensing the temperature of heated air in the enclosure, and a controller for controlling the operation of an air heater and circulation fan assembly based at least in part on data provided by the at least one sensor. 
     
     
         11 . The heating system for a device for killing insects according to  claim 1  wherein the electrical device that generates heat comprises at least one electrical heating coil. 
     
     
         12 . The heating system for a device for killing insects according to  claim 2  wherein the electrical device that generates heat comprises at least one electrical heating coil. 
     
     
         13 . The heating system for a device for killing insects according to  claim 3  wherein the electrical device that generates heat comprises at least one electrical heating coil. 
     
     
         14 . The heating system for a device for killing insects according to  claim 4  wherein the electrical device that generates heat comprises at least one electrical heating coil. 
     
     
         15 . The heating system for a device for killing insects according to  claim 5  wherein the electrical device that generates heat comprises at least one electrical heating coil. 
     
     
         16 . The heating system for a device for killing insects according to  claim 6  wherein the electrical device that generates heat comprises at least one electrical heating coil. 
     
     
         17 . The heating system for a device for killing insects according to  claim 7  wherein the electrical device that generates heat comprises at least one electrical heating coil. 
     
     
         18 . The heating system for a device for killing insects according to  claim 8  wherein the electrical device that generates heat comprises at least one electrical heating coil. 
     
     
         19 . The heating system for a device for killing insects according to  claim 9  wherein the electrical device that generates heat comprises at least one electrical heating coil. 
     
     
         20 . The heating system for a device for killing insects according to  claim 10  wherein the electrical device that generates heat comprises at least one electrical heating coil.