Refrigerating device with circulating air cooling system
View Patent ↗A refrigerating device is provided that includes an evaporator and a compartment that is cooled by air circulating air from and to the evaporator, wherein a diffusion layer can be displaced between a first position, in which air passage openings distributed in a wall separating the compartment from a distribution chamber are covered by the diffusion layer, and a second position, in which the diffusion layer is positioned so as to allow air to flow from the evaporator through the distribution chamber into the compartment while bypassing the diffusion layer.
1. A refrigerating device comprising:
an evaporator;
at least one compartment;
an air circulation path along which air cooled by the evaporator is circulated between the compartment and the evaporator, the air circulation path including an air flow area adjacent the compartment;
a wall between the compartment and the air flow area, the wall having a plurality of air passage openings through which air passes from the air flow area into the compartment; and a diffusion layer, the diffusion layer being disposable between a first position in which it diffuses air flowing from the air flow area into the air passage openings in the wall and a second position in which the diffusion layer is disposed such that air can flow from the air flow area into the compartment while bypassing the diffusion layer.
2. The refrigerating device as claimed in claim 1 , wherein the air flow area is located upstream from the diffusion layer in the direction of flow of the air and is configured as an air distribution chamber.
3. The refrigerating device as claimed in claim 1 , wherein the diffusion layer is a mat made from fiber material.
4. The refrigerating device as claimed in claim 1 , wherein the diffusion layer is configured as a moisture filter.
5. The refrigerating device as claimed in claim 1 and further comprising an air inlet opening formed in a wall of the air flow area adjacent to the wall and the diffusion layer in the second position is offset from the wall.
6. The refrigerating device as claimed in claim 1 , wherein the diffusion layer is attached to a movable frame.
7. The refrigerating device as claimed in claim 6 , wherein the frame includes openings that, in the first position of the diffusion layer, substantially coincide with the air passage openings in the wall.
8. The refrigerating device as claimed in claim 6 , wherein the frame is movable about an axis.
9. The refrigerating device as claimed in claim 6 , wherein the frame is moved on a ramp aligned at an angle to the wall.
10. The refrigerating device as claimed in claim 6 , wherein an actuation section of the frame is adjustable by at least one movable ramp.
11. The refrigerating device as claimed in claimed 10 and further comprising a motor for driving each movable ramp.
12. The refrigerating device as claimed in claim 11 and further comprising a control device having a user interface for specifying a type of cooled item stored in each compartment and configured to select a position of the diffusion layer as a function of the type of cooled item.
13. The refrigerating device as claimed in claim 1 and further comprising at least two frames, each having a diffusion layer and each being associated with a movable ramp operable to move the respective diffusion layer between the first and second positions, and the ramps are rigidly connected to one another.
14. The refrigerating device as claimed in claim 13 , wherein the ramps are arranged on a circular track and the circular track is configured to allow rotation.
15. The refrigerating device as claimed in claim 1 and further comprising a second compartment and a second diffusion layer associated with the second compartment that can be moved independently of the diffusion layer associated with the first compartment between the first and the second position.