IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0754678
(2004-01-09)
|
우선권정보 |
GB-0000729 (2003-01-14) |
발명자
/ 주소 |
- Ashley, Paul
- Johnstone, Colin D.
- Smith, Peter R.
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
19 |
초록
▼
A conditioned vestibule for a cold storage doorway is disclosed. The vestibule includes a frame that supports inner and outer moveable door-forming members. The vestibule also includes a heater that circulates air between the inner and outer door-forming members and a variable-speed fan that varies
A conditioned vestibule for a cold storage doorway is disclosed. The vestibule includes a frame that supports inner and outer moveable door-forming members. The vestibule also includes a heater that circulates air between the inner and outer door-forming members and a variable-speed fan that varies flow of the air between the inner and outer door-forming members. In one embodiment, the airflow from the fan increases upon the opening of the door-forming members and decreases upon the closing of the door-forming members.
대표청구항
▼
1. A conditioned vestibule for a cold storage doorway, comprising:a frame that supports inner and outer moveable door-forming members, wherein the frame comprises first and second side members positioned on opposite sides of the doorway opening; a heater that conditions air between the inner and out
1. A conditioned vestibule for a cold storage doorway, comprising:a frame that supports inner and outer moveable door-forming members, wherein the frame comprises first and second side members positioned on opposite sides of the doorway opening; a heater that conditions air between the inner and outer door-forming members; a fan that varies flow of the air between the inner and outer door-forming members; air discharge means that receives the air from the fan and discharges the air across the doorway opening, wherein the air discharge means comprises a pair of blades running generally lengthwise along the first side member, wherein the blades direct air discharged from an opening positioned between the blades across the doorway opening to an inlet in the second side member, wherein the blades are positioned in a first orientation when the door-forming members are closed and automatically adjust to a second orientation when the door-forming members are open; and air return means that receives the air discharged across the doorway opening and returns the air to the fan for recirculation. 2. The vestibule of claim 1, wherein airflow from the fan increases automatically upon opening of the door-forming members and decreases automatically upon closing of the door-forming members.3. The vestibule of claim 2, wherein the speed of the fan increases 50-500% upon the opening of the door-forming members.4. The vestibule of claim 1, further comprising actuation means that control movement of the door-forming members.5. The vestibule of claim 1, wherein the door-forming members comprise a plurality of strip curtains.6. The vestibule of claim 5, wherein the strip curtains are transparent strip curtains formed from a polyvinyl chloride (PVC).7. The vestibule of claim 5, further comprising a motorized concertina mechanism that suspends the strip curtains.8. The vestibule of claim 1, wherein the frame comprises first and second substantially parallel side members connected by a horizontal top member.9. The vestibule of claim 8, wherein the inner and outer door-forming members are spaced apart by a gap in the range of 250-2500 millimeters when the door-forming members are in a closed position.10. The vestibule of claim 8, wherein the inner and outer door-forming members are spaced apart by a gap of approximately 750 millimeters when the door-forming members are in a closed position.11. The vestibule of claim 1, wherein the frame comprises first and second side members and a top member that connects to the first and second side members, wherein the air discharge means discharges the air from the top member, and wherein the air return means comprises an inlet positioned proximate a base of the first side member.12. The vestibule of claim 1, wherein the blades direct the air across the doorway, opening in a generally horizontal direction.13. The vestibule of claim 1, wherein the air discharge means changes a direction in which the air is discharged based upon whether the door-forming members are in the open or closed position.14. A conditioned vestibule comprising:a frame that defines a doorway opening, the frame comprising first and second vertical side members and a horizontal top member connected to top portions of the first and second side members; a first set of moveable door-forming members connected to the frame; a variable-speed fan that circulates air across the opening and varies flow of the air by increasing the flow automatically upon opening of the door-forming members and decreases the flow automatically upon closing of the door-forming members; and an air discharge means that changes a direction in which air is discharged across the opening based upon whether the door-forming members are in an open position or a closed position. 15. The vestibule of claim 14, wherein the frame further comprises an air discharge means and an air return means, each in communication with the fan, wherein the air is directed across the opening from the air discharge means to the air return means.16. The vestibule of claim 14, wherein the air discharge means comprises first and second blades that direct the discharged air across the opening, wherein the blades are positioned in first and second orientations corresponding to the open and closed positions of the door-forming members.17. A conditioned vestibule comprising:means for supporting first and second door-forming members to define a doorway opening; means for opening and closing the first and second door-forming members; means for circulating air between the first and second door-forming members, wherein said means comprises means for directing the air in a first direction when the door-forming members are in an open position and in a second direction when the door-forming members are in a closed position; andmeans for varying circulation of the air depending upon a position of the first and second door-forming members. 18. The vestibule of claim 17, wherein the means for varying comprises means for increasing circulation of the air across the opening when the first and second door-forming members are in an open position and means for decreasing the circulation of the air when the first and second door-forming members are in a closed position.19. The vestibule of claim 17, wherein the means for circulating comprises:means for discharging the air across the doorway opening, between the first and second door-forming members; means for receiving the air, said means for receiving being positioned across the doorway opening from the means for discharging; and means for conducting the air from the means for receiving to the means for discharging. 20. The vestibule of claim 17,wherein the means for circulating comprises a fan that runs at a first speed when the door-forming members are in a closed position; and wherein the means for varying circulation comprises: means for increasing the fan to a second speed that is 50-150% faster than the first speed, when the door-forming members are in an open position; and means for returning the fan to the first speed when the door-forming members return to the closed position. 21. A conditioned vestibule for use in connection with a cold storage room, the vestibule comprising:a frame comprising first and second substantially parallel side members, wherein the first side member comprises an air discharge means running along substantially the entire length of first side member and wherein the second side member comprises an air inlet; a top member connected to the first and second side members, wherein the top member and the first and second side members define a doorway opening; inner and outer bi-parting door-forming members connected to the frame, wherein the door-forming members can be positioned in open and closed positions, wherein the inner and outer door-forming members are spaced apart from each other by a distance in the range of 250-2500 millimeters when the door-forming members are in the closed position; and wherein the air discharge means directs air in a first direction when the first and second door-forming members are in the open position and in a second direction when the first and second door-forming members are in the second position;a heater; and a fan in communication with the heater, wherein the fan circulates air across the doorway opening from the air discharge means to the air inlet, wherein the fan circulates air at a first speed when the door-forming members are in the closed position and automatically increases the air speed to a second speed that is 50-500% faster than the first speed when the door-forming members are in the open position.
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