Cooling device for dried wall-board sheets

Claim 1

A DEVICE FOR COOLING WALL-BOARD SHEETS AFTER THEY HAVE BEEN TREATED IN A MULTI-DECK KILN COMPRISING A DISCHARGE SECTION COMMUNICATING AT ONE END WITH THE KILN AND OPEN AT ITS OPPOSITE END TO THE ATMOSPHERE, SAID DISCHARGE SECTION INCLUDING SPACED SIDE WALLS AND A PLURALITY OF ROLLERS MOUNTED BETWEEN THE SIDE WALLS PROVIDING SUPPORTING DECKS FOR THE SHEETS CORRESPONDING IN NUMBER TO THE NUMBER OF DECKS IN THE KILN, AN AIR DISTRIBUTING HOOD ADJACENT ONE OF THE SIDE WALLS OF THE DISCHARGE SECTION HAVING A PLURALITY OF NOZZLES CORRESPONDING IN NUMBER TO THE NUMBER OF DECKS AND PROJECTING THROUGH SAID SIDE WALL, EACH OF SAID NOZZLES APPROXIMATELY ALIGNED WITH ONE OF SAID DECKS, AN AIR SUPPLY DUCT CONNECTING SAID AIR DISTRIBUTING HOOD WITH THE ATMOSPHERE, AN AIR SUPPLY FAN IN SAID DUCT, AN EXHAUST HOOD OVERLYING SAID NOZZLES ABOVE SAID DISCHARGE SECTION, AN EXHAUST FAN IN SAID EXHAUST HOOD OPERABLE TO EXHAUST A GREATER QUANTITY OF AIR THAN THAT BEING SUPPLIED BY SAID SUPPLY FAN SO AS TO PROVIDE A NEGATIVE PRESSURE IN SAID DISCHARGE SECTION THEREBY PREVENTING HEAT LADEN AIR FROM ENTERING THE ATMOSPHERE AT SAID OPPOSITE END AND, A SHIELDING PLATE IN SAID DISCHARGE SECTION INTERMEDIATE SAID AIR DISTRIBUTING HOOD AND EXHAUST HOOD, SAID PLATE EXTENDING HORIZONTALLY BEYOND THE HORIZONTAL EXTENT OF SAID NOZZLES TO THEREBY PREVENT THE COOLING AIR FROM BEING DRAWN DIRECTLY INTO SAID EXHAUST HOOD.

Claim 2

A DEVICE FOR COOLING WALL-BOARD SHEETS AFTER THEY HAVE BEEN TREATED IN A MULTI-DECK KILN COMPRISING A DISCHARGE SECTION COMMUNICATING AT ONE END WITH THE KILN AND OPEN AT ITS OPPOSITE END TO THE ATMOSPHERE, SAID DISCHARGE SECTION INCLUDING SPACED SIDE WALLS AND A PLURALITY OF ROLLERS MOUNTED BETWEEN THE SIDE WALLS PROVIDING SUPPORTING DECKS FOR THE SHEETS CORRESPONDING IN NUMBER TO THE NUMBER OF DECKS IN THE KILN, AN AIR DISTRIBUTING HOOD ADJACENT ONE OF THE SIDE WALLS OF THE DISCHARGE SECTION HAVING A PLURALITY OF NOZZLES CORRESPONDING IN NUMBER TO THE NUMBER OF DECKS AND PROJECTING THROUGH SAID SIDE WALL, EACH OF SAID NOZZLES APPROXIMATELY ALIGNED WITH ONE OF SAID DECKS, AN AIR SUPPLY DUCT CONNECTING SAID AIR DISTRIBUTING HOOD WITH THE ATMOSPHERE, AN AIR SUPPLY FAN IN SAID DUCT, AN EXHAUST HOOD OVERLYING SAID NOZZLES ABOVE SAID DISCHARGE SECTION, AN EXHAUST FAN IN SAID EXHAUST HOOD OPERABLE TO EXHAUST A GREATER QUANTITY OF AIR THAN THAT BEING SUPPLIED BY SAID SUPPLY FAN SO AS TO PROVIDE A NEGATIVE PRESSURE IN SAID DISCHARGE SECTION THEREBY PREVENTING HEAT LADEN AIR FROM ENTERING THE ATMOSPHERE AT SAID OPPOSITE END AND, A SHIELDING PLATE IN SAID DISCHARGE SECTION INTERMEDIATE SAID AIR DISTRIBUTING HOOD AND EXHAUST HOOD, SAID PLATE EXTENDING HORIZONTALLY BEYOND THE HORIZONTAL EXTENT OF SAID NOZZLES TO THEREBY PREVENT THE COOLING AIR FROM BEING DRAWN DIRECTLY INTO SAID EXHAUST HOOD.