Pump

Abstract

A pump includes an impeller for sucking and discharging liquid, a pump case having a suction port and a discharge port through which the liquid is sucked and discharged, and a partition cooperating with the pump case to form a pump chamber in which the impeller is rotatably received. The pump is further includes a rotor having a magnet for rotatingly driving the impeller and a stator having claw-shaped magnetic poles for applying a rotational driving force to the rotor, the rotor and the stator constituting a claw pole type motor that serves as a driving power source of the pump. At least the stator is entirely coated with a molded resin.

1 . A pump comprising:
 an impeller for sucking and discharging liquid;   a pump case having a suction port and a discharge port through which the liquid is sucked and discharged;   a partition cooperating with the pump case to form a pump chamber in which the impeller is rotatably received;   a rotor having a magnet for rotatingly driving the impeller; and   a stator having claw-shaped magnetic poles for applying a rotational driving force to the rotor, the rotor and the stator constituting a claw pole type motor that serves as a driving power source of the pump,   wherein at least the stator is entirely coated with a molded resin.   
     
     
         2 . A pump comprising:
 an impeller for drawing and discharging liquid;   a pump case having a suction port and a discharge port through which the liquid is sucked and discharged;   a partition cooperating with the pump case to form a pump chamber in which the impeller is rotatably received;   a rotor having a magnet for rotatingly driving the impeller; and   a stator having claw-shaped magnetic poles for applying a rotational driving force to the rotor, the rotor and the stator constituting a claw pole type motor that serves as a driving power source of the pump,   wherein the stator is formed of a dust core molded by compressing magnetic powder.   
     
     
         3 . The pump of  claim 1 , wherein the stator is formed of a dust core molded by compressing magnetic powder. 
     
     
         4 . The pump of  claim 1 , wherein the claw pole type motor has an outer rotor structure in which the rotor is arranged outside the partition and the stator is arranged inside the partition. 
     
     
         5 . The pump of  claim 2 , wherein the claw pole type motor has an outer rotor structure in which the rotor is arranged outside the partition and the stator is arranged inside the partition. 
     
     
         6 . The pump of  claim 3 , wherein the claw pole type motor has an outer rotor structure in which the rotor is arranged outside the partition and the stator is arranged inside the partition. 
     
     
         7 . The pump of  claim 1 , wherein the claw pole type motor has an inner rotor structure in which the rotor is arranged inside the partition and the stator is arranged outside the partition. 
     
     
         8 . The pump of  claim 2 , wherein the claw pole type motor has an inner rotor structure in which the rotor is arranged inside the partition and the stator is arranged outside the partition. 
     
     
         9 . The pump of  claim 3 , wherein the claw pole type motor has an inner rotor structure in which the rotor is arranged inside the partition and the stator is arranged outside the partition.