Air heated, flexible door panel
First Claim
1. A closure system for selectably accessing a cold space, comprising:
- a doorframe defining an entry between a cold space and a warm space;
a movable door panel having a periphery selectably disposable against the doorframe to at least partially block the entry when in a closed position;
a sealing member in contact with the doorframe and the door panel periphery when 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 the periphery of the movable door panel, and a frost control system in communication with the air passage to warm air from the cold space and to move the warmed air through the air passage to the periphery of the door panel.
1 Assignment
0 Petitions
Accused Products
Abstract
A door system for a cold storage locker has increased resistance to damage when 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. Door panels of laminate, bagged poured foam formation, and self-skinning foam formation give further reduced cost of manufacture and shipping.
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Citations
26 Claims
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1. A closure system for selectably accessing a cold space, comprising:
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a doorframe defining an entry between a cold space and a warm space;
a movable door panel having a periphery selectably disposable against the doorframe to at least partially block the entry when in a closed position;
a sealing member in contact with the doorframe and the door panel periphery when 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 the periphery of the movable door panel, and a frost control system in communication with the air passage to warm air from the cold space and to move the warmed air through the air passage to the periphery of the door panel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A closure system, comprising:
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a doorframe defining an entry between a cold space and a warm space;
a movable door panel having formed of resilient material and having a periphery selectably disposable against the doorframe to at least partially block the entry when in a closed position;
a magnetic assembly having a first member installed in the doorframe and a second member installed in a rear facing portion of the door panel, wherein first and second members magnetically attract each other when in a closed position and thereby maintain the door panel into proximity with the doorframe. - View Dependent Claims (11, 12, 13, 14)
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15. An automated door system, comprising:
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a doorframe defining an entrance and including a ferrous target;
a door track mounted across a top portion of the doorframe;
a door panel movably and vertically supported by the door track and comprised of a resilient material for being able to recover from an impact and movable to contact the doorframe and to obstruct at least a portion of the entrance when in a closed position;
a door positioning system operable to position the door panel in a closed position with a periphery of the door panel registered to the ferrous target of the doorframe;
a magnet in the periphery of the door panel for a flexible rearward face into sealing contact to the doorframe; and
a frost control system for warming the sealing contact between the door panel and the doorframe. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. An automated door system, comprising:
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a doorframe defining an entrance;
a door track mounted across a top portion of the doorframe;
a door panel movably and vertically supported by the door track and comprised of a resilient material for being able to recover from an impact and movable to contact the doorframe and to obstruct at least a portion of the entrance when in a closed position;
a door position sensor operable to sense the door panel in a closed position with a periphery of the door panel registered to the doorframe; and
a door positioning system operably configured to position the door panel to the closed position and to reset the door panel to an open position in response to the door position sensor sensing the door panel no longer being registered to the doorframe indicating impact. - View Dependent Claims (23, 24, 25, 26)
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Specification