초록 ▼

Food processing apparati including magnetic drives are described herein. According to one exemplary embodiment, a food processing apparatus may include a motor having a motor shaft, a rotor rotatably mounted on the motor shaft, and a stator producing an electromagnetic field for interacting with the

Food processing apparati including magnetic drives are described herein. According to one exemplary embodiment, a food processing apparatus may include a motor having a motor shaft, a rotor rotatably mounted on the motor shaft, and a stator producing an electromagnetic field for interacting with the rotor. The rotor may include a rotor magnet having an inner rotor magnet surface facing toward the motor shaft, and the stator may include an outer stator surface facing away from the motor shaft. The inner rotor magnet surface may at least partially face the outer stator surface.

대표청구항 ▼

1. A food processing apparatus comprising:a drive shaft,a receptacle for receiving food for processing, the receptacle including a rotatable element coupled to the drive shaft,a drive plate formed of magnetizable material, the drive plate coupled to the drive shaft to rotate therewith,a motor positi

1. A food processing apparatus comprising:a drive shaft,a receptacle for receiving food for processing, the receptacle including a rotatable element coupled to the drive shaft,a drive plate formed of magnetizable material, the drive plate coupled to the drive shaft to rotate therewith,a motor positioned proximate the drive plate, the motor includinga motor shaft,a rotor rotatably mounted on the motor shaft, the rotor having a rotor magnet, the rotor magnet including an inner rotor magnet surface facing toward the motor shaft, anda stator producing an electromagnetic field that interacts with the rotor magnet to rotate the rotor magnet, the stator including an outer stator surface facing away from the motor shaft,wherein the inner rotor magnet surface at least partially faces the outer stator surface, anda drive magnet coupled to the rotor magnet to rotate therewith, the drive magnet inducing a magnetic field in a direction toward the drive plate to transmit torque from the motor to the drive plate to effect processing of food with the rotatable element. 2. The food processing apparatus of claim 1, wherein the food processing apparatus includes one of a blender, a food mixer, a food processor, and a juicer. 3. The food processing apparatus of claim 2, whereinthe food processing apparatus includes a blender,the receptacle includes a blender cup, andthe rotatable element includes a blade. 4. The food processing apparatus of claim 1, wherein the rotor magnet includes an annular magnet. 5. The food processing apparatus of claim 1, wherein the rotor magnet includes multiple magnets and at least one of the multiple magnets includes an inner surface facing toward the motor shaft. 6. The food processing apparatus of claim 1, wherein the rotor magnet and the stator are substantially centered about the motor shaft. 7. The food processing apparatus of claim 1, further comprisinga hub formed of plastic material rotatably mounted on the motor shaft, the drive magnet and the rotor magnet being coupled to the hub. 8. The food processing apparatus of claim 7, wherein the hub includesa hub upper surface facing away from the stator, the drive magnet being secured to the hub upper surface, anda hub lower surface facing toward the stator, the rotor magnet being secured to the hub lower surface. 9. The food processing apparatus of claim 8, wherein the hub upper surface includesa recess for receiving the drive magnet. 10. The food processing apparatus of claim 8, wherein the hub lower surface includesa lower sidewall extending downward from the hub lower surface, the rotor magnet being secured to the lower sidewall. 11. The food processing apparatus of claim 10, wherein the lower sidewall includesan inner surface facing towards the motor shaft, the rotor magnet being secured to the inner surface. 12. A drive for a driven member, the drive comprising:a drive plate,a motor positioned proximate the drive plate, the motor includinga shaft,a rotor rotatably mounted on the shaft, the rotor having a rotor magnet, the rotor magnet including an inner rotor magnet surface facing toward the shaft, anda stator producing an electromagnetic field that interacts with the rotor magnet to rotate the rotor magnet, the stator including an outer stator surface facing away from the shaft,wherein the inner rotor magnet surface at least partially faces the outer stator surface, anda drive magnet magnetically coupled to the drive plate and magnetically coupled to the rotor magnet, the drive magnet transmitting a torque from the motor to the drive plate. 13. The drive of claim 12, wherein the rotor magnet includes an annular magnet. 14. The drive of claim 12, wherein the rotor magnet includes multiple magnets, and at least one of the multiple magnets includes an inner surface facing toward the motor shaft. 15. The drive of claim 12, wherein the rotor magnet and the stator are substantially centered about the shaft. 16. The drive of claim 12, further comprisinga hub formed of plastic material rotatably mounted on the shaft, the drive magnet and the rotor magnet being coupled to the hub. 17. The drive of claim 16, wherein the hub includesa hub upper surface facing away from the stator, the drive magnet being coupled to the hub upper surface, anda hub lower surface facing toward the stator, the rotor magnet being coupled to the hub lower surface. 18. The drive of claim 17, wherein the hub upper surfaces includesa recess for receiving the drive magnet. 19. The drive of claim 17, wherein the hub lower surface includesa lower sidewall extending downward from the hub lower surface, the rotor magnet being secured to the lower sidewall. 20. The drive of claim 19, wherein the lower sidewall includesan inner surface facing towards the shaft, the rotor magnet being secured to the inner surface. 21. A drive for a driven member, the drive comprising:a drive plate,a motor positioned proximate the drive plate, the motor includinga shaft,a rotor rotatably mounted on the shaft, the rotor having a rotor magnet, the rotor magnet including an inner rotor magnet surface facing toward the shaft, anda stator producing an electromagnetic field that interacts with the rotor magnet to rotate the rotor magnet, the stator including an outer stator surface facing away from the shaft,wherein the inner rotor magnet surface at least partially faces the outer stator surface,a drive magnet magnetically coupled to the drive plate and magnetically coupled to the rotor magnet, the drive magnet transmitting a torque from the motor to the drive plate, anda hub formed of plastic material rotatably mounted on the shaft, the drive magnet and the rotor magnet being coupled to opposite surfaces of the hub. 22. The drive of claim 21, wherein the rotor magnet includes an annular magnet. 23. The drive of claim 21, wherein the rotor magnet includes multiple magnets, and at least one of the multiple magnets includes an inner surface facing toward the motor shaft. 24. The drive of claim 21, wherein the rotor magnet and the stator are substantially centered about the shaft. 25. The drive of claim 21, wherein the hub includesa hub upper surface facing away from the stator, the drive magnet being secured to the hub upper surface, anda hub lower surface facing toward the stator, the rotor magnet being secured to the hub lower surface. 26. The drive of claim 25, wherein the hub upper surface includesa recess for receiving the drive magnet. 27. The drive of claim 25, wherein the hub lower surface includesa lower sidewall extending downward from the hub lower surface, the rotor magnet being secured to the lower sidewall. 28. The drive of claim 25, wherein the lower sidewall includesan inner surface facing towards the motor shaft, the rotor magnet being secured to the inner surface.