Ultra-thin miniature pump

Abstract

An ultra-thin miniature pump applied to transport a fluid includes a main body, a rotor, and a stator. The main body includes a cover part and a bottom part. A joint surface between the cover part and the bottom part possesses an anti-leakage device, and a chamber including a suction port and a discharge port is formed inside the main body. The rotor disposed in the chamber includes a magnet set, an impeller, and a central shaft. The magnet set is connected on the surface of the impeller, and the impeller with the magnet set is aligned by the central shaft and rotates in coaxial. The stator disposed in the chamber includes a plurality of coils corresponding to the magnet set axially. The coils and the magnet set generate an axial magnetic flux to make the impeller rotate for transporting the fluid from the suction port to the discharge port.

1 . An ultra-thin miniature pump, which is applied to transport a fluid, comprising:
 a main body including a cover part and a bottom part, wherein a joint surface between the cover part and the bottom part possesses an anti-leakage device, and a chamber including a suction port and a discharge port is disposed inside the main body;   a rotor being disposed in the chamber and including a magnet set, an impeller, and a central shaft, wherein the magnet set is connected on a surface of the impeller, and the impeller and the magnet set are aligned by the central shaft and rotate in coaxial manner; and   a stator being disposed in the chamber and including a plurality of coils corresponding to the magnet set axially, wherein the coils and the magnet set generate an axial magnetic flux to make the impeller rotate for transporting the fluid from the suction port to the discharge port.   
   
   
       2 . The ultra-thin miniature pump as claimed in  claim 1 , wherein the cover part includes a fixed base and a bearing disposed in the fixed base, and the central shaft is connected to the bearing for rotating. 
   
   
       3 . The ultra-thin miniature pump as claimed in  claim 1 , wherein the bottom part includes a fixed base and a bearing disposed in the fixed base, and the central shaft is connected to the bearing for rotating. 
   
   
       4 . The ultra-thin miniature pump as claimed in  claim 1 , wherein the anti-leakage device is a gasket which is disposed between the cover part and the bottom part. 
   
   
       5 . The ultra-thin miniature pump as claimed in  claim 1 , wherein the magnet set is an annular magnet, and the annular magnet is fixed on the surface of the impeller and located between a plurality of vanes of the impeller and the central shaft. 
   
   
       6 . The ultra-thin miniature pump as claimed in  claim 5 , wherein the surface of the impeller includes an annular cavity located between the vanes of the impeller and the central shaft, and the annular magnet is corresponding to the annular cavity and fixed therein. 
   
   
       7 . The ultra-thin miniature pump as claimed in  claim 1 , wherein the magnet set includes a plurality of magnets, and the magnets are corresponding to the coils respectively and fixed on the surface of the impeller. 
   
   
       8 . The ultra-thin miniature pump as claimed in  claim 1 , wherein the coils are sealed by a sealing layer. 
   
   
       9 . The ultra-thin miniature pump as claimed in  claim 8 , wherein the main body further includes at least an opening, the coils electrically connect outside of the main body, and the coils and the opening are sealed by the sealing layer. 
   
   
       10 . The ultra-thin miniature pump as claimed in  claim 1 , wherein a stripper is disposed between an inside wall of the main body and the impeller, and the stripper is located between the suction port and the discharge port to prevent a pressurized fluid in an outlet region from flowing into an inlet region at low pressure. 
   
   
       11 . An ultra-thin miniature pump, which is applied to transport a fluid, comprising:
 a main body including a cover part, a body part, and a bottom part combined in sequence, wherein a joint surface between the cover part and the body part possesses an anti-leakage device, and a chamber including a suction port and a discharge port is formed inside the main body;   a rotor being disposed in the chamber and including a magnet set, an impeller, and a central shaft, wherein the magnet set is connected on a surface of the impeller, and the impeller and the magnet set are aligned by the central shaft and rotate in coaxial manner;   a stator being disposed in the chamber of the body part and the bottom part and including a plurality of coils corresponding to the magnet set axially, wherein the coils and the magnet set generate an axial magnetic flux to make the impeller rotate for transporting the fluid from the suction port to the discharge port; and   a sealing layer located in a portion of the chamber of the body part and the bottom part for sealing the coils and preventing the fluid from leaking through a joint surface between the body part and the bottom part.   
   
   
       12 . The ultra-thin miniature pump as claimed in  claim 11 , wherein the cover part includes a fixed base and a bearing disposed in the fixed base, and the central shaft is connected to the bearing for rotating. 
   
   
       13 . The ultra-thin miniature pump as claimed in  claim 11 , wherein the bottom part includes a fixed base and a bearing disposed in the fixed base, and the central shaft is connected to the bearing for rotating. 
   
   
       14 . The ultra-thin miniature pump as claimed in  claim 11 , wherein the anti-leakage device is a gasket which is disposed between the cover part and the body part. 
   
   
       15 . The ultra-thin miniature pump as claimed in  claim 11 , wherein the magnet set is an annular magnet, and the annular magnet is fixed on the surface of the impeller and located between a plurality of vanes of the impeller and the central shaft. 
   
   
       16 . The ultra-thin miniature pump as claimed in  claim 15 , wherein the surface of the impeller includes an annular cavity located between the vanes of the impeller and the central shaft, and the annular magnet is corresponding to the annular cavity and fixed in the annular cavity. 
   
   
       17 . The ultra-thin miniature pump as claimed in  claim 11 , wherein the magnet set includes a plurality of magnets, and the magnets are corresponding to the coils respectively and fixed on the surface of the impeller. 
   
   
       18 . The ultra-thin miniature pump as claimed in  claim 11 , wherein the main body further includes at least an opening, the coils electrically connect outside of the main body, and the coils and the opening are sealed by the sealing layer. 
   
   
       19 . The ultra-thin miniature pump as claimed in  claim 11 , wherein a stripper is disposed between an inside wall of the main body and the impeller, and the stripper is located between the suction port and the discharge port to prevent a pressurized fluid in an outlet region from flowing into an inlet region at low pressure.