Apparatus

Abstract

The present disclosure relates to an apparatus having an evaporator with a base plate having a first surface for receiving a heat load from one or more electric components, tubes that partly penetrate into the base plate via a second surface of the base plate for providing evaporator channels which are embedded into the base plate and condenser channels which are located outside of the base plate. In order to obtain a compact and efficient apparatus, the connecting parts can include hollow sections located within the tubes, each hollow section connecting the channels of a tube to each other in a vicinity of an end of the tube in order to allow fluid to flow between the channels of the tube via the hollow section.

1 . An apparatus comprising:
 an evaporator with a first surface for receiving a heat load from one or more electric components;   tubes having internal longitudinal walls dividing the tubes into channels, wherein the tubes partly penetrate into the evaporator for providing evaporator channels which are embedded into the evaporator, and condenser channels which are located outside of the evaporator;   connecting parts at first and second ends of the tubes for passing fluid from the evaporator channels into the condenser channels and for passing fluid from the condenser channels into the evaporator channels, the connecting parts having hollow sections located within the tubes, each hollow section connecting the channels of a tube to each other in a vicinity of an end of the tube in order to allow fluid to flow between the channels of the tube via the hollow section; and   fins extending between the condenser channels of adjacent tubes.   
     
     
         2 . The apparatus according to  claim 1 , comprising:
 a manifold extending between the tubes for allowing fluid to flow between at least one channel of each tube via the manifold.   
     
     
         3 . The apparatus according to  claim 1 , comprising:
 a manifold having a hole extending through the evaporator and parts of the tubes which penetrate into the evaporator for allowing fluid to flow between evaporator channels of different tubes via the manifold.   
     
     
         4 . The apparatus according to  claim 1 , comprising:
 a manifold arranged as an extension of the tubes to allow fluid to flow via the manifold between the hollow sections of the tubes.   
     
     
         5 . The apparatus according to  claim 1 , comprising:
 at least one filling valve providing access to at least one channel or manifold of the apparatus for filling the at least one channel or manifold with fluid.   
     
     
         6 . The apparatus according to  claim 1 , wherein at least some of the channels comprise:
 capillary dimensions.   
     
     
         7 . The apparatus according to  claim 1 , wherein at least one of the tubes comprises:
 a pair of plates with spacer elements arranged between the plates along opposite first edges of the plates, and with plug elements along the opposite second edges of the plates, wherein the spacer elements and the plug elements adjoin the plates to delimit a fluid tight space; and   a wall element arranged in the fluid tight space, the wall element having a plurality of internal walls which form longitudinal internal walls into the tube, a longitudinal length of the wall element being shorter than a longitudinal length of the plates for forming hollow sections between the plug elements and the wall element.   
     
     
         8 . The apparatus according to  claim 1 , wherein the evaporator comprises:
 a plate with grooves into which the tubes are arranged for providing evaporator channels which are embedded into the evaporator.   
     
     
         9 . The apparatus according to  claim 1 , wherein the evaporator comprises:
 a plurality of elongated spacer elements arranged between the tubes, wherein the spacer elements and the tubes together form said first surface.   
     
     
         10 . The apparatus according to  claim 2 , comprising:
 at least one filling valve providing access to at least one channel or manifold of the apparatus for filling the at least one channel or manifold with fluid.   
     
     
         11 . The apparatus according to  claim 10 , wherein at least some of the channels comprise:
 capillary dimensions.   
     
     
         12 . The apparatus according to  claim 11 , wherein at least one of the tubes comprises:
 a pair of plates with spacer elements arranged between the plates along opposite first edges of the plates, and with plug elements along the opposite second edges of the plates, wherein the spacer elements and the plug elements adjoin the plates to delimit a fluid tight space; and   a wall element arranged in the fluid tight space, the wall element having a plurality of internal walls which form longitudinal internal walls into the tube, a longitudinal length of the wall element being shorter than a longitudinal length of the plates for forming hollow sections between the plug elements and the wall element.   
     
     
         13 . The apparatus according to  claim 12 , wherein the evaporator comprises:
 a plate with grooves into which the tubes are arranged for providing evaporator channels which are embedded into the evaporator.   
     
     
         14 . The apparatus according to  claim 12 , wherein the evaporator comprises:
 a plurality of elongated spacer elements arranged between the tubes, wherein the spacer elements and the tubes together form said first surface.