Liquid-cooling heat sink and heat exchanger thereof

Abstract

A liquid-cooling heat sink includes a base, a cover and a heat exchanger. The cover has an intake pipe and an exhaust pipe. The heat exchanger includes heat-dissipating plates overlapping with each other. Each heat-dissipating plate has dividing strips. Any two adjacent dividing strips define a through-hole. Both ends of each heat-dissipating plate are provided with a notch respectively. Each heat-dissipating plate overlaps with adjacent one heat-dissipating plate in a head-to-tail manner, so that the two notches of each heat-dissipating plate form an intake notch channel and an exhaust notch channel respectively. The dividing strips form an intersecting structure on upper and lower sides of each through-hole respectively to thereby define a multi-direction sub-channel. The cooling liquid flows from the intake notch channel into the multi-direction sub-channels and exits via the exhaust notch channel. In this way, the heat-exchanging efficiency and heat-dissipating effect are improved.

1 . A liquid-cooling heat sink, including:
 a base;   a cover covering the base, an accommodating space being formed between the base and the cover for allowing a cooling liquid to be disposed therein, the cover having an intake pipe and an exhaust pipe both in communication with the accommodating space; and   a heat exchanger disposed in the accommodating space and comprising a plurality of heat-dissipating plates overlapping with each other, each of the heat-dissipating plates being constituted of a plurality of dividing strips, any two adjacent dividing strips defining a through-hole, both ends of each heat-dissipating plate being provided with a notch respectively;   wherein each of the heat-dissipating plates overlaps with adjacent one heat-dissipating plate in a head-to-tail manner, so that the two notches of each heat-dissipating plate form an intake notch channel and an exhaust notch channel respectively, the dividing strips form an intersecting structure on upper and lower sides of each through-hole respectively to thereby define a multi-direction sub-channel for allowing the cooling liquid to flow through, and the cooling liquid flows from the intake notch channel into the multi-direction sub-channels and exits via the exhaust notch channel.   
     
     
         2 . The liquid-cooling heat sink according to  claim 1 , wherein the two notches are provided on two opposite ends of each heat-dissipating plate to make the intake notch channel and the exhaust notch channel to be symmetrical to each other. 
     
     
         3 . The liquid-cooling heat sink according to  claim 1 , wherein the two notches are provided on two adjacent ends of each heat-dissipating plate to make the intake notch channel and the exhaust notch channel to be unsymmetrical to each other. 
     
     
         4 . The liquid-cooling heat sink according to  claim 1 , wherein the dividing strips of each heat-dissipating plate comprises a plurality of first dividing strips and a plurality of second dividing strips, and the second dividing strips intersect with the first dividing strips to form an X-shaped structure. 
     
     
         5 . The liquid-cooling heat sink according to  claim 4 , wherein the through-holes of each heat-dissipating plate are divided by the intersecting portions of the first dividing strips and the second dividing strips into the sub-channels. 
     
     
         6 . The liquid-cooling heat sink according to  claim 4 , wherein the dividing strips of each heat-dissipating plate comprises a plurality of first dividing strips and a plurality of second dividing strips, and the second dividing strips perpendicularly intersect with the first dividing strips to form a cross structure. 
     
     
         7 . The liquid-cooling heat sink according to  claim 6 , wherein the through-holes of each heat-dissipating plate are divided by the perpendicularly intersecting portions of the first dividing strips and the second dividing strips into the sub-channels. 
     
     
         8 . The liquid-cooling heat sink according to  claim 1 , wherein the base and the cover are made of metallic materials having high heat conductivity, a gasket is disposed in a connecting portion between the base and the cover, and the accommodating space is formed in the cover. 
     
     
         9 . The liquid-cooling heat sink according to  claim 1 , wherein the intake pipe and the exhaust pipe are provided on the top of the cover. 
     
     
         10 . The liquid-cooling heat sink according to  claim 1 , wherein the intake pipe is provided on the top of the cover, and the exhaust pipe is provided on one side edge of the cover. 
     
     
         11 . The liquid-cooling heat sink according to  claim 1 , wherein the intake pipe and the exhaust pipe are provided on both side edges of the cover. 
     
     
         12 . A heat exchanger of a liquid-cooling heat sink, disposed in the liquid-cooling heat sink for allowing a cooling liquid to flow through, the heat exchanger including:
 a plurality of heat-dissipating plates overlapping with each other, each of the heat-dissipating plates being constituted of a plurality of dividing strips, any two adjacent dividing strips defining a through-hole, both ends of each heat-dissipating plate being provided with a notch respectively;   wherein each of the heat-dissipating plates overlaps with adjacent one heat-dissipating plate in a head-to-tail manner, so that the two notches of each heat-dissipating plate form an intake notch channel and an exhaust notch channel respectively, the dividing strips form an intersecting structure on upper and lower sides of each through-hole respectively to thereby define a multi-direction sub-channel for allowing the cooling liquid to flow through, and the cooling liquid flows from the intake notch channel into the multi-direction sub-channels and exits via the exhaust notch channel.   
     
     
         13 . The heat exchanger of a liquid-cooling heat sink according to  claim 12 , wherein the two notches are provided on two opposite ends of each heat-dissipating plate to make the intake notch channel and the exhaust notch channel to be symmetrical to each other. 
     
     
         14 . The heat exchanger of a liquid-cooling heat sink according to  claim 12 , wherein the two notches are provided on two adjacent ends of each heat-dissipating plate to make the intake notch channel and the exhaust notch channel to be unsymmetrical to each other. 
     
     
         15 . The heat exchanger of a liquid-cooling heat sink according to  claim 12 , wherein the dividing strips of each heat-dissipating plate comprises a plurality of first dividing strips and a plurality of second dividing strips, and the second dividing strips intersect with the first dividing strips to form an X-shaped structure. 
     
     
         16 . The heat exchanger of a liquid-cooling heat sink according to  claim 15 , wherein the through-holes of each heat-dissipating plate are divided by the intersecting portions of the first dividing strips and the second dividing strips into the sub-channels. 
     
     
         17 . The heat exchanger of a liquid-cooling heat sink according to  claim 15 , wherein the dividing strips of each heat-dissipating plate comprises a plurality of first dividing strips and a plurality of second dividing strips, and the second dividing strips perpendicularly intersect with the first dividing strips to form a cross structure. 
     
     
         18 . The heat exchanger of a liquid-cooling heat sink according to  claim 17 , wherein the through-holes of each heat-dissipating plate are divided by the perpendicularly intersecting portions of the first dividing strips and the second dividing strips into the sub-channels. 
     
     
         19 . A liquid-cooling heat sink, including:
 a base;   a cover covering the base, an accommodating space being formed between the base and the cover for allowing a cooling liquid to be disposed therein, the cover having an intake pipe and an exhaust pipe both in communication with the accommodating space; and   a heat exchanger disposed in the accommodating space and comprising a plurality of heat-dissipating plates overlapping with each other, each of the heat-dissipating plates being constituted of a plurality of curved dividing strips, any two adjacent curved dividing strips defining a through-hole, both ends of each heat-dissipating plate being provided with a notch respectively;   wherein each of the heat-dissipating plates overlaps with adjacent one heat-dissipating plate in a head-to-tail manner, so that the two notches of each heat-dissipating plate form an intake notch channel and an exhaust notch channel respectively, the curved dividing strips form an intersecting structure on upper and lower sides of each through-hole respectively to thereby define a plurality of multi-direction sub-channels for allowing the cooling liquid to flow through, and the cooling liquid flows from the intake notch channel into the multi-direction sub-channels and exits via the exhaust notch channel.   
     
     
         20 . The liquid-cooling heat sink according to  claim 19 , wherein one of the notches is curved, and the curved dividing strips are arranged at intervals to follow the profile of the curved notch, thereby defining a plurality of curved through-holes. 
     
     
         21 . The liquid-cooling heat sink according to  claim 19 , wherein the two notches are provided on two opposite ends of each heat-dissipating plate. 
     
     
         22 . The liquid-cooling heat sink according to  claim 19 , wherein the intake pipe and the exhaust pipe are provided on the top of the cover. 
     
     
         23 . The liquid-cooling heat sink according to  claim 19 , wherein the intake pipe is provided on the top of the cover, and the exhaust pipe is provided on one side edge of the cover. 
     
     
         24 . The liquid-cooling heat sink according to  claim 19 , wherein the intake pipe and the exhaust pipe are provided on both side edges of the cover.