Cooling device and its cooling method
First Claim
1. A cooling device comprising a thermal insulating box, a cooling coil part of a cooling coil disposed on at least one inner wall of the thermal insulating box, a fan arranged in front of the cooling coil part, and a cooling chamber as a space in front of the fan, where the fan discharges air into the cooling chamber to flow therein, whereindry cooling air in the cooling coil part is sucked from a rear side of the fans and discharged into the cooling chamber;
- air returning from the cooling chamber is divided into a first air volume corresponding to a volume of sucked air passed through the cooling coil part that is fed from the cooling chamber to the cooling coil part through areas not occupied by the cooling fan, and a second air volume that heads directly for the rear of the fan, wherein most of the air returning from the cooling chamber directly heads for the rear of the fan; and
a speed at which the airflow is fed is set so as to permit vapor generated in the cooling chamber to solidify before the vapor is brought into contact with the cooling coil.
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Accused Products
Abstract
A cooling device is disclosed capable of reducing the amount of frost deposited on a cooling coil (7), wherein cooling fans (8a, 8b) are disposed at the front of the cooling coil (7), most of the flowing air discharged into a cooling chamber is discharged again into the cooling chamber by the cooling fans (8a, 8b) without being returned to the cooling coil (7), dry cooling air in the cooling coil (7) is sucked from the rear of the cooling fans (8a, 8b) and discharged into the cooling chamber, an air volume corresponding to the volume of sucked air passed through the cooling coil (7) is fed from the cooling chamber to the cooling coil (7) through areas not occupied by the cooling fans (8a, 8b), and the air feeding speed is so set as to permit vapor generated in the cooling chamber to solidity until the vapor is brought into contact with the surface of the cooling coil (7).
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Citations
25 Claims
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1. A cooling device comprising a thermal insulating box, a cooling coil part of a cooling coil disposed on at least one inner wall of the thermal insulating box, a fan arranged in front of the cooling coil part, and a cooling chamber as a space in front of the fan, where the fan discharges air into the cooling chamber to flow therein, wherein
dry cooling air in the cooling coil part is sucked from a rear side of the fans and discharged into the cooling chamber; -
air returning from the cooling chamber is divided into a first air volume corresponding to a volume of sucked air passed through the cooling coil part that is fed from the cooling chamber to the cooling coil part through areas not occupied by the cooling fan, and a second air volume that heads directly for the rear of the fan, wherein most of the air returning from the cooling chamber directly heads for the rear of the fan; and
a speed at which the airflow is fed is set so as to permit vapor generated in the cooling chamber to solidify before the vapor is brought into contact with the cooling coil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 20, 21, 22)
the cooling coil is arranged with a rear side facing the inner wall side space, adjacent to the wall, and a front side is combined with an inner periphery of an opening formed at the partition; - and
the cooling fan is arranged in front of the cooling coil and set to rotate to discharge air behind the fan directly forward.
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12. The cooling device according to claim 11, wherein the cold air discharged from the cooling fan is reflected by a wall facing the cooling fan and returns to the cooling fan.
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13. The cooling device according to claim 11, further comprising a conveyor to convey a material to be cooled in the cooling space, and the cooling fan is adjacent to the conveyor.
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20. The cooling device according to claim 13, wherein the conveyor is a belt circulating while moving in a straight line horizontally.
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21. The cooling device according to claim 20, wherein the cooling coils are disposed at both sides of the belt.
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22. The cooling device according to claim 21, wherein the respective cooling fans in front of the cooling coil oppose each other with the belt in between.
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14. A cooling device comprising a thermal insulating box, a cooling coil part of a cooling coil disposed on at least one inner wall of the thermal insulating box, a fan arranged in front of the cooling coil part, and a cooling chamber as a space in front of the fan, where the fan discharges air into the cooling chamber to flow therein, wherein
dry cooling air in the cooling coil part is sucked from a rear side of the fans and discharged into the cooling chamber; -
an air volume corresponding to a volume of sucked air passed through the cooling coil part is fed from the cooling chamber to the cooling coil part through areas not occupied by the cooling fan;
a speed at which the airflow is fed is set so as to permit vapor generated in the cooling chamber to solidify before the vapor is brought into contact with the cooling coil;
further comprising a partition to divide the thermal insulating box into a cooling space and an inner wall side space outside of the cooling space, and also a ventilating hole to pass air between the cooling space and the inner wall side space, wherein the cooling coil is arranged with a rear side facing the wall side space, adjacent to the wall, and a front side is combined with an inner periphery of an opening formed at the partition;
the cooling fan is arranged in front of the cooling coil and set to rotate to discharge air behind the fan directly forward;
further comprising a conveyor to convey a material to be cooled in the cooling space, and the cooling fan is adjacent to the conveyor;
further comprising a rotating drum disposed in the cooling space and a belt-driving attached spirally to the rotating drum, and the conveyer circulates while moving spirally on the belt-driving plate by a rotation of the rotation drum. - View Dependent Claims (15, 16, 17, 18, 19)
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23. A cooling method using a cooling device comprising a thermal insulating box, a cooling coil part of a cooling coil disposed on at least one inner wall of the thermal insulating box, a fan arranged in front of the cooling coil part, and a cooling chamber as a space in front of the fan, where the fan discharges air into the cooling chamber to flow therein and most of the airflow is discharged again by the fan without being returned into the cooling coil part, wherein
the flowing air discharged again into the cooling chamber and the flowing air sucked from the cooling coil are joined before being discharged into the cooling chamber; -
an air volume corresponding to a volume of sucked air passed through the cooling coil part is fed from the cooling chamber to the cooling coil part through areas not occupied by the cooling fan; and
the speed at which the air volume is fed is set so as to permit vapor generated in the cooling chamber to solidify before the vapor is brought into contact with the cooling coil. - View Dependent Claims (24, 25)
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Specification