Heat exchanger

Abstract

A heat exchanger for controlling temperature of electrical or electronic components has at least one flat tube with an inlet port and outlet port. A coolant entering through the inlet port passes through multiple heat sinks located within the flat tube before exiting through the outlet port. The heat exchanger has a first heat sink coupled to the flat plate with multiple fins arranged based on a first fin configuration, a second heat sink coupled to the flat plate with multiple fins arranged based on a second fin configuration, and at least one coupling device. The heat sinks are arranged based on a position of one or more components mounted on the flat tube such that the number of heat sink fins is proportional to heating characteristics of the components mounted on the tube.

What is claimed is: 
     
         1 . A heat exchanger comprising:
 at least one flat tube having an inlet port and an outlet port such that a fluid coolant enters the flat tube through the inlet port and exits the flat tube through the outlet port so as to pass through multiple heat sinks located within the flat tube;   a first heat sink coupled to the flat plate, the first heat sink comprising multiple fins arranged based on a first fin configuration;   a second heat sink coupled to the flat plate, the second heat sink comprising multiple fins arranged based on a second fin configuration; and   at least one coupling device configured for receiving one or more components;   wherein the multiple heat sinks within the flat tube are arranged based on the position of one or more components mounted on the flat tube such that the fin densities of the heat sinks are proportional to heating characteristics of the components mounted thereon.   
     
     
         2 . The heat exchanger of  claim 1 , further comprising a base plate having at least one slot configured to support the at least one flat tube. 
     
     
         3 . The heat exchanger of  claim 1 , wherein the second heat sink is located a predetermined distance from the first heat sink. 
     
     
         4 . The heat exchanger of  claim 1 , wherein the first and second fin configuration is selected from one of an extruded, bonded, elliptical and pin configuration. 
     
     
         5 . The heat exchanger of  claim 1 , wherein each of the multiple heat sinks is manufactured from a material selected from the group comprising copper, aluminum, titanium, graphite and alloys thereof. 
     
     
         6 . The heat exchanger of  claim 5 , wherein the material of first heat sink is different from the material of the second heat sink. 
     
     
         7 . A cold plate for fluid cooling one or more components, the cold plate comprising:
 at least one flat tube having an inlet port and an outlet port so as to allow a coolant fluid to flow through the flat tube such that the coolant fluid passes through multiple heat sinks located within the flat tube;   a first heat sink coupled to the flat plate, the first heat sink comprising multiple fins arranged based on a first fin configuration; and   a second heat sink coupled to the flat plate, the second heat sink comprising multiple fins arranged based on a second fin configuration;   wherein the first heat sink is located at a predetermined distance from the second heat sink so as to facilitate formation of multiple boundary layers in order to increase the heat transfer coefficient.   
     
     
         8 . The cold plate of  claim 7 , wherein the first fin configuration is different from the second fin configuration. 
     
     
         9 . The cold plate of  claim 7 , wherein the first and second fin configuration is selected from one of an extruded, bonded, elliptical and pin configuration. 
     
     
         10 . The cold plate of  claim 7 , wherein each of the multiple heat sinks is manufactured from a material selected from the group comprising copper, aluminum, titanium, graphite and alloys thereof.