Patent Publication Number: US-2019186838-A1

Title: Water-cooling device

Description:
The present application is a continuation of U.S. patent application Ser. No. 15/183,793, filed on Jun. 16, 2016. 
    
    
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates generally to a water-cooling device, and more particularly to a water-cooling device the total volume of which is greatly minified and the structure of which is thinned. 
     2. Description of the Related Art 
     It is known that the operation function of the current computer has become stronger and stronger. Also, the operation speed of the current computer has become higher and higher. Moreover, as a whole, the configuration, structure and the motherboard connection manner of the current computer have been improved to break through the set pattern. This is a very important revolution in the computer field. The new-generation central processing unit has ultrahigh operation speed. As a result, when the central processing unit processes the operation commands, the heat generated by the central processing unit is much higher. Therefore, it has become a critical issue in this field how to use a heat dissipation system with good heat conductivity to lower the temperature and make the central processing unit normally work at an allowable temperature. 
     In a conventional water-cooling device, the heat of a heat generation component (CPU or GPU) is absorbed and heat-exchanged with a cooling liquid in the water-cooling device. Then, a pump in the water-cooling device is used to circulate the cooling liquid. The water-cooling device is connected to a heat sink via multiple pipe bodies, whereby the cooling liquid can circulate and perform heat exchange between the heat sink and the water-cooling device to dissipate the heat. In this case, the heat of the heat generation component can be quickly dissipated. 
     However, the conventional water-cooling device includes a traditional stator assembly composed of multiple windings and stacked silicon steel sheets. Therefore, the conventional water-cooling device has a considerable thickness and volume. As a result, the structure of the conventional water-cooling device will lead to an excessively large volume and cannot be thinned. 
     SUMMARY OF THE INVENTION 
     It is therefore a primary object of the present invention to provide a water-cooling device the total volume of which is greatly minified. 
     It is a further object of the present invention to provide the above water-cooling device the structure of which is thinned. 
     To achieve the above and other objects, the water-cooling device of the present invention includes a pump case, at least one winding, a driver and a heat exchange member. The pump case has a top section, a bottom section and a peripheral section together defining a pump chamber. The winding is disposed on a circuit board. The circuit board is disposed on any of the top section, the bottom section and the peripheral section. The driver is disposed in the pump chamber. At least one magnetic member is disposed on the driver in a position corresponding to the winding. The heat exchange member is connected with the pump case. The heat exchange member has multiple radiating fins and is formed with a heat exchange chamber. The heat exchange chamber communicates with the pump chamber for a cooling liquid to pass through. 
     According to the structural design of the present invention, the magnetic member is disposed on the driver in a position corresponding to the winding, whereby the magnetic member can induce and magnetize the winding on the circuit board. Under the induction and magnetization between the magnetic member and the winding, the silicon steel sheets of the conventional water-cooling device can be saved so as to greatly minify the total volume of the water-cooling device and thin the structure. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The structure and the technical means adopted by the present invention to achieve the above and other objects can be best understood by referring to the following detailed description of the preferred embodiments and the accompanying drawings, wherein: 
         FIG. 1  is a perspective exploded view of a first embodiment of the water-cooling device of the present invention; 
         FIG. 2  is a perspective assembled view of the first embodiment of the water-cooling device of the present invention; 
         FIG. 3  is a sectional view of the first embodiment of the water-cooling device of the present invention; 
         FIG. 4  is a sectional view of a second embodiment of the water-cooling device of the present invention; 
         FIG. 5  is a sectional view of a third embodiment of the water-cooling device of the present invention; and 
         FIG. 6  is a sectional view of a fourth embodiment of the water-cooling device of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Please refer to  FIGS. 1, 2 and 3 .  FIG. 1  is a perspective exploded view of a first embodiment of the water-cooling device of the present invention.  FIG. 2  is a perspective assembled view of the first embodiment of the water-cooling device of the present invention.  FIG. 3  is a sectional view of the first embodiment of the water-cooling device of the present invention. According to the first embodiment, the water-cooling device  1  of the present invention includes a pump case  10 , at least one winding  11 , a driver  12  and a heat exchange member  14 . The pump case  10  has a top section  1011 , a bottom section  1012  and a peripheral section  1013  together defining a pump chamber  1014 . The pump case  10  has an inlet  102  in communication with an outlet  103 . The winding  11  is disposed on a circuit board  15 . (The winding  11  can be formed/disposed on the circuit board  15  by means of printing, stacking, etching or layout). The circuit board  15  can be selectively disposed on any of the top section  1011 , the bottom section  1012  and the peripheral section  1013 . A power wire (not shown) is used to electrically connect the circuit board  15  to outer side for powering the water-cooling device  1 , whereby the water-cooling device  1  can normally work. In this embodiment, the winding  11  is, but not limited to, disposed on the circuit board  15  by means of printing. In practice, the winding  11  can be disposed on the circuit board  15  by means of layout or stacking according to the requirement of a user. In a modified embodiment, the circuit board  15  can be embedded in the inner wall face of any of the top section  1011 , the bottom section  1012  and the peripheral section  1013  by integral injection over-molding (as shown in  FIG. 4 ). 
     The driver  12  is disposed in the pump chamber  1014 . The driver  12  is made of a nonmetal material (such as plastic, rubber or polymer synthetic material). The driver  12  has a central shaft  122  and multiple blades  121 . Each blade  121  has an upper edge  1211 , a lower edge  1212  and a lateral edge  1213 . At least one magnetic member  13  is disposed on the upper edge  1211 , the lower edge  1212  or the lateral edge  1213  of the blade  121  in a position corresponding to the winding  11 . 
     The heat exchange member  14  is connected with the pump case  10 . The heat exchange member  14  has multiple radiating fins  141  and is formed with a heat exchange chamber  142 . The heat exchange chamber  142  communicates with the pump chamber  1914  for a cooling liquid (not shown) to pass through. The radiating fins  141  are arranged at intervals or intersect each other. The radiating fins  141  are in contact with the cooling liquid in the heat exchange chamber  142 . 
     Please further refer to  FIG. 3 . In this embodiment, the circuit board  15  is disposed on the surface of the bottom section  1012 . The magnetic member  13  is correspondingly disposed on the lower edge  1212  of the blade  121 . In this case, the magnetic member  13  can face the winding  11  on the circuit board  15  to induce and magnetize the winding  11 . Under the induction and magnetization between the magnetic member  13  and the winding  11 , the driver  12  is operated to drive the cooling liquid in the water-cooling device  1  to sequentially pass through the inlet  102 , the pump chamber  1014 , the heat exchange chamber  142  and the outlet  103 . The cooling liquid heat-exchanges with the radiating fins  141  to dissipate the heat. This can save the silicon steel sheets of the conventional water-cooling device and greatly minify the total volume of the water-cooling device  1  and thin the structure. 
     Please refer to  FIGS. 5 and 6  and supplementally to  FIG. 1 .  FIG. 5  is a sectional view of a third embodiment of the water-cooling device of the present invention.  FIG. 6  is a sectional view of a fourth embodiment of the water-cooling device of the present invention. The third and fourth embodiments are partially identical to the first embodiment in component and relationship between the components and thus will not be repeatedly described hereinafter. The third embodiment is mainly different from the first embodiment in that the circuit board  15  is disposed on the peripheral section  1013  and the magnetic member  13  is correspondingly disposed on the lateral edge  1213  of the blade  121  (as shown in  FIG. 5 ). The fourth embodiment is mainly different from the first embodiment in that the circuit board  15  is disposed under the top section  1011  and the magnetic member  13  is correspondingly disposed on the upper edge  1211  of the blade  121  (as shown in  FIG. 6 ). This can also create magnetization between the winding  11  on the circuit board  15  and magnetic member  13  and achieve the same effect as the first embodiment. 
     In conclusion, in comparison with the conventional water-cooling device, the present invention has the following advantages: 
     1. The total volume of the water-cooling device is greatly minified. 
     2. The structure of the water-cooling device is thinned. 
     The present invention has been described with the above embodiments thereof and it is understood that many changes and modifications in the above embodiments can be carried out without departing from the scope and the spirit of the invention that is intended to be limited only by the appended claims.