Device and method for supplying a cooled airflow to at least one location for cooling

Abstract

The present invention relates to a device for supplying a cooled airflow to at least one location for cooling. The present invention also relates to a method for supplying a cooled airflow to this at least one location for cooling using such a device.

1 . A device for supplying a cooled airflow to at least one location for cooling, comprising:
 a cooling unit for generating a cooled airflow; and   a guide duct for guiding the cooled airflow from the cooling unit to the at least one location for cooling; wherein   substantially the whole wall of the guide duct is permeable to the air of the cooled airflow;   an outflow part of the wall of the guide duct has a first air permeability, and   a guide part of the wall has a second air permeability, wherein   the outflow part of the wall is configured to be placed close to the at least one location for cooling, and   the air permeability of the outflow part of the wall is higher than the air permeability of the guide part of the wall.   
     
     
         2 . The device of  claim 1 , wherein
 the outflow part of the wall of the guide duct is configured to be placed above the at least one location for cooling.   
     
     
         3 . The device of  claim 1 , wherein
 the temperature of the cooled airflow is at least 2° C. lower than the temperature of the ambient air.   
     
     
         4 . The device of  claim 2 , wherein
 the outflow part of the wall of the guide duct is configured to be placed at a distance of between 100-300 cm above the at least one location for cooling.   
     
     
         5 . The device of  claim 2 , wherein
 the device further comprises a frame with which the outflow part of the wall of the guide duct is configured to be placed above the at least one location for cooling.   
     
     
         6 . The device of  claim 5 , wherein
 the guide duct is suspended in the frame by means of a mounting extending between the guide duct and the frame.   
     
     
         7 . The device of  claim 6 , wherein
 the mounting has a substantially airtight part extending from the wall of the guide duct over a distance of at least 10 cm in the direction of the frame.   
     
     
         8 . The device of  claim 1 , wherein
 the cooling unit comprises a suction mouthpiece for drawing in an airflow for cooling, which suction mouthpiece is configured to be placed under the outflow part of the wall of the guide duct.   
     
     
         9 . The device of  claim 1 , wherein
 the wall of the guide duct is made of textile.   
     
     
         10 . The device of  claim 1 , wherein
 the outflow speed of the air of the cooled airflow from the outflow part of the wall of the guide duct is between 0.04-0.12 m/s.   
     
     
         11 . The device of  claim 1 , wherein
 the air permeability of the outflow part of the wall is between 200-1400 m 3 /m 2 /hour at a static pressure of 120 Pa.   
     
     
         12 . The device of  claim 1 , wherein
 the air permeability of the guide part of the wall is between 10-80 m 3 /m 2 /hour at a static pressure of 120 Pa.   
     
     
         13 . A method for supplying an airflow to at least one location, comprising supplying the cooled airflow from the device as claimed in  claim 1  to the at least one location. 
     
     
         14 . A method as claimed in  claim 13 , further comprising placing the outflow part of the wall of the air-permeable guide duct above the at least one location for cooling prior to supplying the cooled airflow. 
     
     
         15 . The device of  claim 4 , wherein the outflow part of the wall of the guide duct is configured to be able to be placed at a distance of 150-250 cm above the at least one location for cooling. 
     
     
         16 . The device of  claim 7 , wherein the mounting has a substantially airtight part extending from the wall of the guide duct over a distance of at least 20 cm in the direction of the frame. 
     
     
         17 . The device of  claim 7 , wherein the mounting has a substantially airtight part extending from the wall of the guide duct over a distance of at least 30 cm in the direction of the frame. 
     
     
         18 . The device of  claim 10 , wherein the outflow speed of the air of the cooled airflow from the outflow part of the wall of the guide duct is between 0.06-0.10 m/s. 
     
     
         19 . The device of  claim 11 , wherein the air permeability of the outflow part of the wall is between 400-1200 m 3 /m 2 /hour at a static pressure of 120 Pa. 
     
     
         20 . The device of  claim 11 , wherein the air permeability of the outflow part of the wall is between 600-1000 m 3 /m 2 /hour at a static pressure of 120 Pa.