Water pump device

Abstract

A water pump device including a driving motor, a housing, a magnetic rotating member and a magnetic impeller unit is provided. The driving motor includes a rotating shaft extending outside the housing. The housing is disposed on the driving motor and includes an accommodation portion and a water drawing portion. The water drawing portion has a water inlet and a water outlet. The magnetic rotating member is disposed in the accommodation portion. The rotating shaft is disposed in the magnetic rotating member. The magnetic rotating member includes alternately arranged first surfaces and second surfaces, and their respective magnetic poles are different. The magnetic impeller unit is disposed opposite to top of the magnetic rotating member and located in the water drawing portion. The magnetic impeller unit includes alternately arranged third surfaces and fourth surfaces, and their respective magnetic poles are different.

What is claimed is: 
     
         1 . A water pump device, comprising:
 a driving motor including a rotating shaft;   a housing being disposed on the driving motor, wherein the housing includes an accommodation portion and a water drawing portion, the rotating shaft is disposed in the accommodation portion and extends outside the housing, and the water drawing portion has a water inlet and a water outlet;   a magnetic rotating member disposed in the accommodation portion, wherein the rotating shaft is disposed in the magnetic rotating member, the magnetic rotating member includes alternately arranged a plurality of first surfaces and a plurality of second surfaces, and magnetic poles of the first surfaces are different from magnetic poles of the second surfaces; and   a magnetic impeller unit disposed opposite to top of the magnetic rotating member and located in the water drawing portion, the magnetic impeller unit includes alternately arranged a plurality of third surfaces and a plurality of fourth surfaces, and magnetic poles of the third surfaces are different from magnetic poles of the fourth surfaces, wherein magnetic poles of the first surfaces are same to the magnetic poles of the third surfaces, while magnetic poles of the second surfaces are same to the magnetic poles of the fourth surfaces.   
     
     
         2 . The water pump device according to  claim 1 , wherein the magnetic impeller unit further includes:
 a disk magnet having a bottom surface facing the magnetic rotating member and including the third surfaces and the forth surfaces;   a hub; and   a plurality of blades, each of which individually connected to the hub, and the blades being disposed radically from the hub.   
     
     
         3 . The water pump device according to  claim 2 , wherein the magnetic impeller unit further includes:
 a cover body disposed on the disk magnet and covering the blades, the cover body having a first opening and at least a fixing hole, and a space and at least a second opening being defined between the cover body and the disk magnet, wherein the first opening is corresponding to the water inlet, while the second opening is corresponding to the water outlet; and   at least a bump disposed on one of the blades.   
     
     
         4 . The water pump device according to  claim 2 , wherein the magnetic rotating member further includes a top surface opposite to the bottom surface the disk magnet, the top surface includes the first surfaces and the second surfaces, and the areas of the top surface and the bottom surface are almost the same. 
     
     
         5 . The water pump device according to  claim 1 , wherein the magnetic rotating member includes a disk magnet which is round, rectangular, or polygon-shaped.