Low energy magnetic spa circulation system

Abstract

A powered pipeless circulation system for a container holding a fluid includes first and second motor assemblies. The first motor assembly has multiple coil members. Each coil member is electrically charged for generating a magnetic field. A first housing is configured for accommodating the first motor assembly, and fixedly attached to a dry surface of a wall of the container. A second motor assembly has at least one impeller and an impeller magnet plate. A second housing is configured for rotatably accommodating the second motor assembly and being disposed on a wet surface of the wall opposite the first housing. The impeller magnet plate is aligned to magnetically engage with the coil members. In use, the second motor assembly is magnetically coupled to the first motor assembly having a wall in-between the assemblies for forming a motor configured for rotating the impeller.

1 . A powered pipeless circulation system for a container configured to hold a fluid, said circulation system comprising:
 a first motor assembly having a plurality of coil members, each coil member being electrically charged for generating a magnetic field;   a first housing configured for accommodating said first motor assembly, and fixedly attached to a dry surface of a wall of the container;   a second motor assembly having at least one impeller and an impeller magnet plate;   a second housing configured for rotatably accommodating said second motor assembly and being disposed on a wet surface of the wall opposite said first housing, said impeller magnet plate being aligned to magnetically engage with said plurality of coil members; and   wherein the wall of the container is sandwiched between said first and second motor assemblies when said second motor assembly is magnetically coupled to said first motor assembly for forming a motor configured for rotating said impeller.   
     
     
         2 . The circulation system of  claim 1 , further comprising a plurality of rotational magnets spaced in a circular pattern on said impeller magnet plate in an alternating polarity order such that polarities of said rotational magnets are magnetically attracted to polarities of said coil members when said coil members are magnetically charged to cause rotation of said impeller magnet plate. 
     
     
         3 . The circulation system of  claim 2 , wherein a number of said rotational magnets is one more or less than a number of said coil members, so that each said rotational magnet is positioned off-centered relative to each corresponding coil member. 
     
     
         4 . The circulation system of  claim 1 , further comprising a thrust bearing wrapped around a shaft of said impeller, said bearing being indirectly in contact with said shaft. 
     
     
         5 . The circulation system of  claim 4 , wherein said bearing is configured to withstand axial and rotational loading of said shaft, the axial and rotational loading being force applied parallel to an axis of rotation of said shaft for preventing movement of said impeller along the axis of said loaded shaft. 
     
     
         6 . The circulation system of  claim 1 , further comprising a locating bracket having a semicircular protrusion with first and second ends, said locating bracket fixedly mounted on the wet surface of the container wall for accommodating said second housing. 
     
     
         7 . The circulation system of  claim 6 , wherein said semicircular protrusion directly abuts and upwardly supports said second housing when said second motor assembly is magnetically coupled to said first motor assembly for preventing misalignment or disconnection of said second motor assembly from said first motor assembly. 
     
     
         8 . The circulation system of  claim 6 , further comprising at least one first mounting magnet associated with said first housing, and at least one second mounting magnet associated with said second housing, said second mounting magnet extending radially from the periphery of said second housing and engaging tips of said locating bracket, wherein said second mounting magnet assists or enhances the rotation of said impeller. 
     
     
         9 . The circulation system of  claim 8 , wherein said tips respectively disposed on the first and second ends of said locating bracket for releasably cradling said second motor assembly in position and preventing rotation of said second motor assembly during operation. 
     
     
         10 . The circulation system of  claim 1 , further comprising at least one cavity on the periphery of said second housing, said cavity configured for accommodating an air tube for drawing air into said second motor assembly, wherein said cavity in fluid communication with said air tube creates a vacuum effect for mixing the air and the fluid, thereby reducing load bearing of said impeller for circulating the fluid. 
     
     
         11 . The circulation system of  claim 10 , further comprising at least one opening on said second housing for propelling the mixture of the air and water, said mixture of the air and water reducing an amount of water pressure propelled from said opening. 
     
     
         12 . A powered pipeless circulation system for a container configured to hold a fluid, said circulation system comprising:
 a first motor assembly having a plurality of coil members, each coil member being electrically charged for generating a magnetic field;   a control unit for controlling the magnetic field based on an electric current flowing through said coil members;   a first housing configured for accommodating said first motor assembly, and fixedly attached to a dry surface of a wall of the container;   a second motor assembly having at least one impeller and an impeller magnet plate;   a second housing configured for rotatably accommodating said second motor assembly and being disposed on a wet surface of the wall opposite said first housing, said impeller magnet plate being aligned to magnetically engage with said plurality of coil members; and   wherein the wall of the container is sandwiched between said first and second motor assemblies when said second motor assembly is magnetically coupled to said first motor assembly for forming a motor configured for rotating said impeller.   
     
     
         13 . The circulation system of  claim 12 , wherein said control unit generates alternating polarities for said coil members, so that said coupled first and second motor assemblies as a combination operate to rotate said impeller. 
     
     
         14 . The circulation system of  claim 12 , wherein said first motor assembly including said coil members defines an inner chamber dimensioned for accommodating said control unit. 
     
     
         15 . The circulation system of  claim 12 , further comprising an aluminum mounting plate fixedly attached to the dry surface of the container wall, said mounting plate having at least one magnet for magnetic attachment of said second motor assembly. 
     
     
         16 . The circulation system of  claim 12 , wherein said first motor assembly is made of heat-resistant material. 
     
     
         17 . The circulation system of  claim 12 , wherein a thickness of said first motor assembly is substantially equal to a thickness of said second motor assembly. 
     
     
         18 . The circulation system of  claim 12 , wherein said first motor assembly includes cooling fins mounted on an outer surface of said first motor assembly to reduce heat generated from said coil members. 
     
     
         19 . The circulation system of  claim 12 , wherein said first motor assembly comprises non-moving parts. 
     
     
         20 . A powered pipeless circulation system for a container configured to hold a fluid, said circulation system comprising:
 a first motor assembly having a plurality of coil members, each coil member being electrically charged for generating a magnetic field;   a control unit for controlling the magnetic field based on an electric current flowing through said coil members;   a first housing configured for accommodating said first motor assembly, and fixedly attached to a dry surface of a wall of the container;   a second motor assembly having at least one impeller and an impeller magnet plate;   a second housing configured for rotatably accommodating said second motor assembly and being disposed on a wet surface of the wall opposite said first housing, said impeller magnet plate being aligned to magnetically engage with said plurality of coil members;   a plurality of rotational magnets spaced in a circular pattern on said impeller magnet plate in an alternating polarity order such that polarities of said rotational magnets are magnetically attracted to polarities of said coil members when said coil members are magnetically charged to cause rotation of said impeller magnet plate; and   wherein the wall of the container is sandwiched between said first and second motor assemblies when said second motor assembly is magnetically coupled to said first motor assembly for forming a motor configured for rotating said impeller.