Heat conducting plate and method for producing plate body thereof

Abstract

A heat conducting plate and a method for producing a plate body thereof. The heat conducting plate comprises an integrally formed plate body. The plate body comprises a front surface, and several capillary tube cavities formed in the plate body and allowing flow of a heat exchange medium. Each capillary tube cavity extends along a first direction parallel to the front surface, and a micro-tooth structure is provided on the inner wall of each capillary tube cavity. The heat exchange medium may flow in the capillary tube cavities along the first direction. By means of the plate body and the capillary tube cavities, the temperature homogenizing effect and heat exchange efficiency of the heat conducting plate are significantly improved; by providing the micro-tooth structure, the heat exchange medium may form a capillary phenomenon, thereby improving the heat exchange efficiency.

1 . A heat conducting plate, comprising an integrally formed plate body, the plate body comprising a front surface and a plurality of capillary tube cavities formed inside the plate body and provided for a heat exchange medium to flow, each capillary tube cavity extending along a first direction parallel to the front surface and provided with a micro-tooth structure on the inner wall thereof, and the heat exchange medium being capable of flowing along the first direction in the capillary tube cavity. 
     
     
         2 . The heat conducting plate according to  claim 1 , wherein some of the capillary tube cavities are distributed evenly side by side along a second direction perpendicular to the first direction and parallel to the front surface. 
     
     
         3 . The heat conducting plate according to  claim 1 , wherein the micro-tooth structure comprises micro combs distributed continuously and a comb groove between two adjacent micro combs, and the comb groove extends along the first direction so that the heat exchange medium is capable of flowing in the comb groove to form capillarity. 
     
     
         4 . The heat conducting plate according to  claim 3 , wherein the micro groove comprises valleys away from the center of the capillary tube cavity and peaks close to the center of the capillary tube cavity, the valleys and/or the peaks being of an arc shape. 
     
     
         5 . The heat conducting plate according to  claim 1 , wherein the micro-tooth structure is at least provided on the inner wall of the capillary tube cavity away from the front surface. 
     
     
         6 . The heat conducting plate according to  claim 1 , wherein the capillary tube cavity is provided as a closed space filled with the heat exchange medium, the heat exchange medium flowing circularly in the capillary tube cavity. 
     
     
         7 . The heat conducting plate according to  claim 1 , wherein the capillary tube cavity comprises a first opening and a second opening provided oppositely along the extension direction thereof and the heat exchange medium is capable of flowing into and out of the capillary tube cavity through the first opening and the second opening. 
     
     
         8 . A production method for a plate body of a heat conducting plate according to  claim 1 , comprising:
 forming a basic plate body through an extrusion process, the basic plate body comprising a plurality of capillary tube cavities formed therein, each capillary tube cavity comprising a first opening and a second opening provided at a first end and a second end of the basic plate body respectively;   crimping the first end to seal the first opening;   communicating the second opening with a vacuum pump through a filling tube and vacuumizing the capillary tube cavity;   injecting the heat exchange medium into the capillary tube cavity; and   crimping and banding the basic plate body along the extension direction of the capillary tube cavity according to a fixed length and cutting off the same to obtain at least one plate body.   
     
     
         9 . The production method for a plate body of a heat conducting plate according to  claim 8 , wherein the inner wall of each capillary tube cavity is provided with a micro-tooth structure. 
     
     
         10 . The production method for a plate body of a heat conducting plate according to  claim 9 , wherein the step of communicating the second opening with a vacuum pump through a filling tube and vacuumizing the capillary tube cavity comprises:
 communicating the second opening with a filling tube by welding the filling tube to the second end; and   communicating the filling tube with a vacuum pump and vacuumizing the capillary tube cavity.   
     
     
         11 . The production method for a plate body of a heat conducting plate according to  claim 8 , wherein the step of injecting the heat exchange medium into the capillary tube cavity comprises:
 injecting the heat exchange medium into the capillary tube cavity through the filling tube.   
     
     
         12 . The production method for a plate body of a heat conducting plate according to  claim 8 , wherein the step of crimping and banding the basic plate body along the extension direction of the capillary tube cavity according to a fixed length and cutting off the same to obtain at least one plate body comprises:
 crimping and banding the basic plate body along the extension direction of the capillary tube cavity according to a fixed length and cutting off the same; and   welding the cut-off section to obtain at least one basic plate body.