Circulating air dryer
OwnerJohn L. Carter, Michael M. Spragueinventors
Life of this patent
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Abstract
A drier which has a reversible power operated air mover for circulating air through multiple loads in either of opposite directions. An exhaust duct means is provided for removing moisture-laden air in a region between the loads, and a dilution air means is provided for introducing dilution air into this region. Means is provided for heating the dilution air introduced. The means for introducing air and with drawing air and for heating the air have the same operating characteristics irrespective of the direction of air movement.
Claims12
In apparatus for the drying of product with circulated air in a chamber, the chamber having a space for the reception of the product, said space having first and second product-receiving locations, spaced from each other and separated by a zone disposed between said locations;
- reversible heated air flow means remote from said chamber for producing movement of air in a path extending through the chamber in either of opposite directions, with said air when moving in one direction moving through said first location and then through said zone and then through said second location, and when moving in an opposite direction moving through said second location and then through said zone and then through said first location, said reversible heated air flow means including a heater remote from said chamber and an air introducing and removing means remote from the chamber controlled in response to the direction of the movement of the heated air for introducing dilution air and removing moisture-laden air in the air moved;
- an exhaust duct opening directly to said zone for exhausting moisture-laden air that has traveled through one location but before traveling through the other location;
- and
- a supply duct opening directly to said zone for introducing air to replenish the air exhausted by said exhaust duct.
In apparatus for the drying of product with circulated air in a chamber, the chamber having a space for the reception of the product, said space having first and second product-receiving locations spaced from each other and separated by a zone disposed between said locations;
- a reversible power-operated air mover for selectively moving air through said space in either a direction extending through the first and then the second location or in an opposite directing extending to the second and then through the first location,
- an exhaust duct opening to said zone for exhausting moisture-laden air that has traveled through one location but before traveling to the other location, and
- a supply duct opening to said zone for introducing air to replenish the air exhausted by said exhaust duct,
- air on moving between the first and second locations moving through said zone and along a flow path, said supply duct extending in said zone transversely of said path and the supply duct having ports providing a connection between the interior of the supply duct and said zone providing air supply paths extending normal to the flow path of circulated air.
In a dryer for drying product, a chamber, a first load station and a second load station located in said chamber with the stations spaced from each other in the chamber and separated by a zone,
- reversible heated air flow means remote from said chamber for producing movement of heated air in a path extending through the chamber in either of opposite directions, with said air when moving in one direction moving through said first location and then through said zone and then through the second location, and when moving in an opposite direction moving through the second location and then through the zone and then through the first location,
- air-extraction means with an intake directly connected to said zone for extracting air from said zone between said locations with the air moving in either of opposite directions, and
- dilution air introducing means with an outlet connected directly to said zone for introducing dilution air into said zone with air moving in either of opposite directions.
In a dryer for drying product, a chamber, a first load station and a second load station located in said chamber with the stations spaced from each other in the chamber, and separated by a zone,
- reversible heated air flow means remote from said chamber for producing movement of heated air in a path through the chamber in either of opposite directions, with said air when moving in one direction moving through said first location and then through said zone and then through the second location, and when moving in an opposite direction moving through the second location and then through the zone and then through the first location,
- means for extracting air from said zone between said locations with the air moving in either of opposite directions,
- means for introducing dilution air into said zone with air moving in either of opposite directions, and
- an elongate air heating means located in said zone between said first and second locations for heating air moving in said path in either of opposite directions, said elongate heating means extending transversely of said path.
Dependencies are inferred from the claim text.