Cooling system for cooling of at least one circulating fluid, and a machine comprising the cooling system

Abstract

The present invention concerns a cooling system for cooling of at least one circulating fluid. The cooling system comprises at least one cooling unit ( 20 ) comprising: an air inlet ( 22 ) arranged in a first side surface ( 35 ); an air outlet ( 23 ) arranged in a second side surface ( 36 ); a fan for creating an air flow through the unit from the air inlet ( 22 ) to the air outlet ( 23 ); a cooling element ( 30 ) through which at least one fluid is circulating and which is placed in the air flow through the unit ( 20 ). The invention is characterized in that the cooling unit comprises a passage ( 37 ), which extends between the air inlet ( 22 ) and the air outlet ( 23 ) through which the air flow flows and in which the flow direction of the air flow is redirected by a redirection plate ( 24 ) so that the air flow in to, and out of the cooling unit ( 20 ) are separated, and that the size of the cross section area in the air inlet ( 22 ) and along the passage ( 37 ) that extends between the air inlet ( 22 ) and the air outlet ( 23 ) as well as in the air outlet ( 23 ) is mainly constant. The invention also concerns a machine ( 10 ) comprising the cooling system according to the invention.

1 . Cooling system for cooling of at least one circulating fluid, whereby the cooling system comprises at least one cooling unit ( 20 ) comprising:
 an air inlet ( 22 ) arranged in a first side surface ( 35 );   an air outlet ( 23 ) arranged in a second side surface ( 36 );   a fan for creating an air flow through the unit from the air inlet ( 22 ) to the air outlet ( 23 ); and   a cooling element ( 30 ) through which at least one fluid is circulating and which is placed in the air flow through the unit ( 20 ),   whereby the cooling system is characterized in that the cooling unit comprises a passage ( 37 ), which extends between the air inlet ( 22 ) and the air outlet ( 23 ) through which the air flow flows and in which the flow direction of the air flow is redirected by a redirection plate ( 24 ) so that the air flow in to, and out of, the cooling unit ( 20 ) are separated, and   that the size of the cross section area in the air inlet ( 22 ) and along the passage ( 37 ) that extends between the air inlet ( 22 ) and the air outlet ( 23 ) as well as in the air outlet ( 23 ) is mainly constant.   
     
     
         2 . Cooling system according to  claim 1 , characterized in that the fan of the cooling unit comprises a fan wheel ( 51 ) placed parallel to the first side surface ( 35 ) of the cooling unit in connection to the air inlet ( 22 ) of the cooling unit. 
     
     
         3 . Cooling system according to  claim 1 , characterized in that the fan of the cooling unit comprises a fan wheel placed parallel to the air outlet ( 23 ) of the cooling unit in connection to the second side surface ( 36 ) of the cooling unit. 
     
     
         4 . Cooling system according to  claim 1 , characterized in that at the air inlet ( 22 ) inlet lamellae ( 26 ) are arranged that partly cover the air inlet ( 22 ) in order to prevent particles etc. from entering the cooling unit ( 20 ) and to reduce the amount of noise emitted from the cooling unit ( 20 ) to the surroundings. 
     
     
         5 . Cooling system according to  claim 1 , characterized in that at the air outlet ( 23 ) outlet lamellae ( 27 ) are arranged, which at least partly cover the air outlet ( 23 ) to direct the air flow and to reduce the amount of noise emitted from the cooling unit ( 20 ) to the surroundings. 
     
     
         6 . Cooling system according to  claim 4 , characterized in that the cooling element ( 30 ) is placed inside the inlet lamellae ( 26 ) in connection to the air inlet ( 22 ). 
     
     
         7 . Cooling system according to  claim 1 , characterized in that in the cooling unit ( 20 ) a redirection plate ( 24 ) is arranged that guides the air flow between the air inlet ( 22 ) and the air outlet ( 23 ). 
     
     
         8 . Cooling system according to  claim 1 , characterized in that in the cooling unit ( 20 ) deflection plates ( 50 ) are arranged in order to reduce the flow losses in the air flow. 
     
     
         9 . Cooling system according to  claim 4 , characterized in that the inlet lamellae ( 26 ) are arranged being able to be turned outwardly at the air inlet ( 22 ). 
     
     
         10 . Cooling system according to  claim 9 , characterized in that the cooling unit comprises rotation actuators ( 31 ) so that when the inlet lamellae ( 26 ) are turned outwardly, the cooling element ( 30 ) could be turned outside of the first side surface ( 35 ) of the cooling unit ( 20 ) where the air inlet ( 22 ) is situated. 
     
     
         11 . Cooling system according to  claim 1 , any of the  claims 1  to  10 , characterized in that the cooling element ( 30 ) comprises one, or a plurality of, pipe coils for one, or a plurality of fluids. 
     
     
         12 . Cooling system comprising at least a pair of ( 40 ) cooling units ( 20 ) according to  claim 1 , whereby the cooling system at least partly is enclosed by a housing ( 21 ), which at least has two side surfaces ( 35 ) and an upper surface ( 36 ), whereby the air inlet ( 22 ) of the cooling units ( 20 ) are placed in the same, or different, side surfaces ( 35 ) of the housing ( 21 ) and the air outlet ( 23 ) is placed in the upper surface ( 36 ) of the housing ( 21 ). 
     
     
         13 . Cooling system according to  claim 12 , characterized in that the housing ( 21 ) mainly has the shape of a cuboid where the air inlets ( 22 ) are placed in two of the side surfaces ( 35 ) facing away from each other. 
     
     
         14 . Machine ( 10 ) appropriate for ground works, drilling or similar comprising one or a plurality of cooling systems according to  claim 1 , whereby the air inlet ( 22 ), or the air inlets ( 22 ), are placed in connection to any of the sides of the machine, and the air outlet ( 23 ), or the air outlets ( 23 ), are placed on the upper surface of the machine ( 10 ). 
     
     
         15 . Machine ( 10 ) according to  claim 14 , where the air inlet, or the air inlets, is/are placed at the longitudinal surfaces of the machine. 
     
     
         16 . Machine ( 10 ) according to  claim 14 , where the at least one fluid circulating in the cooling system is used for cooling the heat generating components in the machine. 
     
     
         17 . Cooling system according to  claim 2 , characterized in that at the air inlet ( 22 ) inlet lamellae ( 26 ) are arranged that partly cover the air inlet ( 22 ) in order to prevent particles etc. from entering the cooling unit ( 20 ) and to reduce the amount of noise emitted from the cooling unit ( 20 ) to the surroundings. 
     
     
         18 . Cooling system according to  claim 3 , characterized in that at the air inlet ( 22 ) inlet lamellae ( 26 ) are arranged that partly cover the air inlet ( 22 ) in order to prevent particles etc. from entering the cooling unit ( 20 ) and to reduce the amount of noise emitted from the cooling unit ( 20 ) to the surroundings. 
     
     
         19 . Cooling system according to  claim 2 , characterized in that at the air outlet ( 23 ) outlet lamellae ( 27 ) are arranged, which at least partly cover the air outlet ( 23 ) to direct the air flow and to reduce the amount of noise emitted from the cooling unit ( 20 ) to the surroundings. 
     
     
         20 . Machine ( 10 ) according to  claim 15 , where the at least one fluid circulating in the cooling system is used for cooling the heat generating components in the machine.