Air heated, flexible door panel
First Claim
Patent Images
1. A closure system for comprising:
- a doorframe mounted in a wall and defining an entry between a cold space on one side of the wall and a warm space on the other side of the wall;
a movable door panel having a periphery and selectably disposable against the doorframe to at least partially block the entry when in a closed position, the door panel substantially unobstructing the entry when in an open position;
a sealing member positioned between and attached to a selected one of the doorframe and the door panel periphery and operatively configured to form an air seal with the other of the doorframe and the door panel periphery when the door panel is in the closed position; and
a frost control system to prevent ice forming on the sealing member, comprising;
an air passage communicating between the cold space and a doorframe port attached to the doorframe proximate to the periphery of the movable door panel when in the closed position,an air heater in the air passage to warm air from the cold space; and
an air channel defined internal to the movable door panel proximate to the periphery and including an inlet port communicating with the doorframe port to receive warmed air therefrom;
an air mover in communication with the air passage to move the warmed air through the air passage to the air channel of the door panel.
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Accused Products
Abstract
A door system for a cold storage locker has increased resistance to damage by including resilient door panels that flex when hit by a forklift. A high degree of insulation is achieved by the choice and thickness of the resilient foams therein. Also, the resilient door panels are magnetically attracted to a gasket seal on a doorframe to provide an affirmative seal. Active magnetic control may enhance the attraction or repulsion of the door panel. Frost control is realized by warming air from the cold storage locker and passing it through air channels in the door panel proximate to the gasket seal and down an astragal interface between door panels.
56 Citations
25 Claims
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1. A closure system for comprising:
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a doorframe mounted in a wall and defining an entry between a cold space on one side of the wall and a warm space on the other side of the wall; a movable door panel having a periphery and selectably disposable against the doorframe to at least partially block the entry when in a closed position, the door panel substantially unobstructing the entry when in an open position; a sealing member positioned between and attached to a selected one of the doorframe and the door panel periphery and operatively configured to form an air seal with the other of the doorframe and the door panel periphery when the door panel is in the closed position; and a frost control system to prevent ice forming on the sealing member, comprising; an air passage communicating between the cold space and a doorframe port attached to the doorframe proximate to the periphery of the movable door panel when in the closed position, an air heater in the air passage to warm air from the cold space; and an air channel defined internal to the movable door panel proximate to the periphery and including an inlet port communicating with the doorframe port to receive warmed air therefrom; an air mover in communication with the air passage to move the warmed air through the air passage to the air channel of the door panel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification