Patent Publication Number: US-11649824-B2

Title: Liquid-cooling pump and flow channel structure thereof

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a liquid pump, and more particularly to a liquid-cooling pump and a flow channel structure thereof. The liquid-cooling pump is mainly applied to a liquid-cooling radiator, but not limited thereto. 
     2. Description of the Prior Art 
     In general, a liquid-cooling radiator assembly is composed of a liquid-cooling radiator and a liquid-cooling block. A liquid pump is configured to circulate the liquid in the liquid-cooling radiator and the liquid-cooling block. After the liquid absorbs the heat from the liquid-cooling block, it flows into the liquid-cooling radiator to dissipate heat, and then the liquid after heat dissipation flows back into the liquid-cooling block. The performance of the liquid pump directly affects the flow smoothness and flow rate of the liquid. In actual use, it is necessary to increase the rotational speed of an impeller and the size of the entire liquid pump, etc. for selecting a liquid pump with larger working performance parameters to increase the flow rate. On the one hand, the cost is high, and the energy consumption is large. On the other hand, its application is limited because it is large in size. Therefore, for those with high requirements for size or/and power consumption, the flow smoothness and flow rate of the liquid in the conventional liquid pump are limited, and it is difficult to meet higher requirements for performance. 
     Accordingly, the inventor of the present invention has devoted himself based on his many years of practical experiences to solve these problems. 
     SUMMARY OF THE INVENTION 
     In view of the defects of the prior art, the primary object of the present invention is to provide a liquid-cooling pump and a flow channel structure thereof. The flow channel structure plays a good role of guiding water, and has better smoothness, and is conducive to improving the working efficiency of the liquid pump. 
     In order to achieve the above objects, the present invention adopts the following technical solutions: 
     A flow channel structure of a liquid-cooling pump comprises a liquid pump mounting chamber. A bottom of the liquid pump mounting chamber is centrally formed with a liquid inlet. A peripheral side of the liquid pump mounting chamber is formed with a liquid outlet. An inner wall of the peripheral side of the liquid pump mounting chamber is convexly provided with a protruding boss corresponding to one side of the liquid outlet and surrounding an impeller, and is concavely provided with a guide groove corresponding to another side of the liquid outlet and surrounding the impeller. The protruding boss is gradually thinned along a rotating direction of the impeller. The guide groove is gradually deepened along the rotating direction of the impeller. A distal end of the guide groove communicates with the liquid outlet. 
     Preferably, a starting end of the protruding boss is a concave arcuate surface. When a liquid flushes to the starting end of the protruding boss, the concave arcuate surface provides a partial stop function for the liquid to flow back to the liquid outlet. 
     Preferably, the guide groove is gradually widened along the rotating direction of the impeller. 
     Preferably, the guide groove has an arc-shaped, V-shaped or rectangular cross-section. 
     Preferably, an annular wall is provided around an outer periphery of the liquid inlet to form a pressurizing chamber. 
     Preferably, a starting end of the guide groove is spaced a determined distance apart from a distal end of the protruding boss. 
     Preferably, the protruding boss and the guide groove are perpendicular to the inner wall of the peripheral side of the liquid pump mounting chamber. 
     A liquid-cooling pump comprises the foregoing liquid pump mounting chamber and an impeller mounted in the liquid pump mounting chamber. When the impeller rotates, a liquid is driven to flow along the protruding boss and the guide groove to the distal end of the guide groove to enter the liquid outlet, and the liquid is discharged from the liquid outlet. 
     Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be known from the above technical solutions. The inner wall of the peripheral side of the liquid pump mounting chamber is convexly provided with the protruding boss corresponding to one side of the liquid outlet and surrounding the impeller, and is concavely provided with the guide groove corresponding to the other side of the liquid outlet and surrounding the impeller. The flow channel structure plays a good role of guiding water, has better smoothness, is conducive to the increase of flow rate, and is conducive to improving the working efficiency of the liquid pump. Besides, the starting end of the protruding boss is a concave arcuate surface. When the liquid flushes to the starting end of the protruding boss, the concave arcuate surface provides a partial stop function for the liquid to flow back to the liquid outlet, so as to ensure the liquid output of the liquid outlet. 
     Embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    is a perspective view of the liquid pump mounting chamber according to a first embodiment of the present invention; 
         FIG.  2    is a cross-sectional view of the liquid pump mounting chamber according to the first embodiment of the present invention; 
         FIG.  3    is a schematic view showing the application of the liquid pump mounting chamber according to the first embodiment of the present invention; 
         FIG.  4    is a cross-sectional view of the liquid pump mounting chamber according to the first embodiment of the present invention, wherein the guide groove is an arc-shaped groove; 
         FIG.  5    is a cross-sectional view of the liquid pump mounting chamber according to the first embodiment of the present invention, wherein the guide groove is a V-shaped groove; 
         FIG.  6    is a cross-sectional view of the liquid pump mounting chamber according to the first embodiment of the present invention, wherein the guide groove is a rectangular groove; 
         FIG.  7    is an exploded view of the liquid pump according to a second embodiment of the present invention; and 
         FIG.  8    is a cross-sectional view of the liquid pump according to the second embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       FIGS.  1  to  8    show the specific structure of a preferred embodiment of the present invention. 
     A flow channel structure of a liquid-cooling pump comprises a liquid pump mounting chamber  32 . The bottom of the liquid pump mounting chamber  32  is centrally formed with a liquid inlet  321 . The peripheral side of the liquid pump mounting chamber  32  is formed with a liquid outlet  322 . The inner wall  3201  of the peripheral side of the liquid pump mounting chamber  32  is convexly provided with a protruding boss  323  corresponding to one side of the liquid outlet  322  and surrounding an impeller  41 , and is concavely provided with a guide groove  324  corresponding to the other side of the liquid outlet  322  and surrounding the impeller  41 . Both the protruding boss  323  and the guide groove  324  are perpendicular to the inner wall  3201  of the peripheral side of the liquid pump mounting chamber  32 . The protruding boss  323  is gradually thinned along the rotating direction of the impeller  41 . The guide groove  324  is gradually deepened and widened along the rotating direction of the impeller  41 . The distal end  3242  of the guide groove  324  communicates with the liquid outlet  322 . 
     As shown in  FIGS.  1  to  3   , the distal end  3231  of the protruding boss  323  extends to a position opposite to the liquid outlet  322 . The starting end  3241  of the guide groove  324  is spaced a determined distance apart from the distal end  3231  of the protruding boss  323 . The liquid is rotated along the protruding boss  323 . The liquid-containing space is gradually enlarged until the maximum area between the distal end  3231  of the protruding boss  323  and the starting end  3241  of the guide groove  324 . From the starting end  3241  of the guide groove  324 , the liquid is rotated and guided to flow along the guide groove  324  to the liquid outlet  322 . The guide groove  324  is gradually widened and deepened toward the liquid outlet  322 , which is beneficial for the liquid to quickly pass through the guide groove  324  to the liquid outlet  322 . Preferably, the starting end  3232  of the protruding boss  323  is a concave arcuate surface. When the liquid flushes to the starting end  3232  of the protruding boss  323 , the concave arcuate surface provides a partial stop function for the liquid to flow back to the liquid outlet  322 , so as to ensure the liquid output of the liquid outlet  322 . 
     As shown in  FIGS.  4  to  6   , the guide groove  324  may have an arc-shaped, V-shaped or rectangular cross-section. 
     As shown in  FIG.  7    and  FIG.  8   , a liquid-cooling pump comprises a liquid pump mounting chamber  32  and an impeller  41  mounted in the liquid pump mounting chamber  32 . When the impeller  41  rotates, the liquid is driven to flow along the protruding boss  323  and the guide groove  324  to the distal end  3242  of the guide groove  324  to enter the liquid outlet  322 , and then the liquid is discharged from the liquid outlet  322 . Preferably, an annular wall  325  is provided around the outer periphery of the liquid inlet  321  to form a pressurizing chamber  326 . 
     The feature of the present invention is that the inner wall of the peripheral side of the liquid pump mounting chamber is convexly provided with a protruding boss corresponding to one side of the liquid outlet and surrounding the impeller, and is concavely provided with a guide groove corresponding to the other side of the liquid outlet and surrounding the impeller. The flow channel structure plays a good role of guiding water, has better smoothness, is conducive to the increase of flow rate, and is conducive to improving the working efficiency of the liquid pump. Besides, the starting end of the protruding boss is a concave arcuate surface. When the liquid flushes to the starting end of the protruding boss, the concave arcuate surface provides a partial stop function for the liquid to flow back to the liquid outlet, so as to ensure the liquid output of the liquid outlet.