Please refer to FIG. 1, which is an exploded view of a preferred embodiment of the present invention. As shown in the figure, a pump structure 10 includes a base 1, a motor 2, a central pivot 22, a pump blade 3, and a Upper cover 4.
 In this embodiment, the base 1 protrudes upwards with a convex portion 11, and the convex portion 11 includes an upper surface 13, a lower groove 12, and a central opening 130, wherein the central opening 130 communicates with the upper surface 13 and Lower groove 12.
 In addition, an annular wall 14 protrudes from the upper surface 13 of the base 1, and an oil seal 410 is sheathed on the annular wall 14. In this embodiment, the oil seal 410 uses an O-ring. At the same time, the annular wall 14 and the The protrusions 11 are spaced apart from each other and form an accommodating chamber 140 .
 The motor 2 in the accompanying drawing is a DC brushless three-wire servo motor 2 using 5VDC, including a rotor 20, a stator 21, a control circuit board 23, and a motor control assembly 24 (AN8473SA Spindle motor driver IC AN8473SA Spindle motor driver IC ). Among them, the rotor 20 includes a twelve-pole powerful magnet 37, the stator 21 and the control assembly 24 are assembled on the control circuit board 23, which is assembled in the lower groove 12 of the base 1, and the above-mentioned central pivot 22 is upward The central opening 130 of the base 1 passes through and connects the base 1 and the motor 2 , while the control circuit board 23 includes a set of control wires 231 .
 The pump blade 3 in the accompanying drawings is set on the upper surface 13 of the base 1. As shown in the figure, the pump blade 3 includes a top surface 30 and a shaft hole 32, wherein the shaft hole 32 is sleeved on the central pivot 22, and the twelve-pole powerful magnet 37 of the rotor 20 is set on the bottom surface of the pump blade 3 to form a ring flange, which is accommodated in the accommodating chamber 140, which can be driven by a 5VDC DC brushless three-wire servo motor The control circuit board 23 of the pump 2 rotates inductively, and thus drives the pump blade 3 to rotate on the central pivot 22.
 In addition, the top surface 30 of the pump vane 3 is provided with six fan-shaped leaves 31 that protrude upwards at an equal angle. These fan-shaped leaves 31 have a height that gradually decreases from the inside to the outside. The heights are the same, and the area of each fan-shaped leaf 31 is also the same. At the same time, these fan-shaped leaves 31 are spaced apart from each other and therefore six concave regions 36 are formed, that is, there is a gap between every two fan-shaped leaves 31. region 36, and each concave region 36 has an area identical to each other, and the area of each concave region 36 is then the same as the area of each fan-shaped leaf 31, therefore, six fan-shaped leaves 31 and six concave The areas 36 are identical in size.
 In this example, based on the results of physical experiments, the 5VDC brushless three-wire servo motor 2 is optimally designed to match the pump blades 3 with six fan blades 31; of course, it can also be used with a pump with five fan blades 31 The blade 3, or the pump blade 3 that uses other plural fan-shaped blades 31.
 In addition, in this embodiment, an annular flange 37 extends downward from the outer edge 301 of the pump blade 3 , and the annular flange 37 is accommodated in the accommodating chamber 140 of the base 1 .
 The upper cover 4 in the drawings is sealed and closed on the base 1 , and the upper cover 4 includes an inlet 41 and an outlet 42 , and the inlet 41 and the outlet 42 are respectively connected to the pump blades 3 .
 In addition, the base 1 also includes three through holes 15, and the upper cover 4 also includes three screw holes 43 which respectively correspond to the three through holes 15 of the base 1, and three screws 5 pass through the three through holes 15 respectively. And the screws are locked in the three screw holes 43 of the upper cover 4, because the oil seal 410 on the base 1 is kept in contact between the base 1 and the upper cover 4, and the upper cover 4 and the base 1 are combined with screws 5 Locking, so the upper cover 4 can be sealed and closed on the base 1; and the base 1 also includes a bottom plate 51, which is covered on the lower groove 12 of the base 1, so as to avoid the control circuit board 23 and the control assembly 24 from being damaged. Inadvertently damaged or short-circuited due to exposure to the outside world.
 Please refer to FIG. 1 and FIG. 2 at the same time, which is a combination diagram of a preferred embodiment of the present invention. When the components in FIG. 1 are combined with each other, the pump structure 10 shown in FIG. 2 can be formed.
 Please refer to Fig. 1, Fig. 2 and Fig. 3 at the same time, it is an implementation pattern diagram of a preferred embodiment of the present invention, as shown in the figure, the pump structure 10 is assembled in the computer and forms a component in a liquid cooling system, After the heat collecting plate 63 has absorbed the heat energy emitted by the computer central processing unit (CPU) 7, the heat energy will be taken out through the liquid in the heat collecting plate 63, and the liquid with heat energy will flow into the radiator 61 and into a lower temperature liquid. Then, the lower temperature liquid passes through a heat exchanger 62 to further reduce its temperature, and finally passes through the pipeline 60 from the inlet 41 of the pump structure 10 .
 When the liquid flows into the inlet 41 of the pump structure 10, the 5VDC DC brushless three-wire servo motor 2 is activated to drive the pump blade 3 to rotate, so that the liquid with heat energy is squeezed out of the upper cover due to centrifugal force. After the outlet 42' is closed, the cryogenic liquid is sent back to the heat collecting plate 63 to complete a cooling cycle.
 In the cooling cycle, due to the shape design of the pump blade 3 of the present invention, the efficiency of the centrifugal pump can be increased, so the pumped water volume can be effectively increased. Furthermore, the present invention utilizes a 5VDC brushless DC three-wire servo motor 2 to cooperate with a motor control unit 24 whose model number is AN8473SA, which can also reduce the power consumption of the motor 2 . Even, the volume and thickness of the overall pump structure 10 can be reduced by using a twelve-pole powerful magnet 37 .
 In summary, the pump structure 10 of the present invention has at least the following advantages:
 (1) Strong water output.
 (2) Low power consumption.
 (3) The 12-pole powerful magnet 52 used in conjunction with the 5VDC brushless DC servo motor can make the pump structure 10 thinner and lighter.
 The above-mentioned embodiments are only examples for convenience of description, and the scope of rights claimed by the present invention should be based on the scope of the patent application, rather than limited to the above-mentioned embodiments.