Magnetic Convection Heat Circulation Pump

Abstract

A magnetic convection heat circulation pump, wherein magnets are disposed inside a magnetic field flow passage for passing a magnetic fluid therein or on a part of the inner wall surface of a circulation flow passage in a magnetic pump thermally joined to a heat receiving part. The magnetic fluid is driven since a magnetic force is directly applied to the magnetic fluid and a large temperature gradient is produced between the heat receiving part and the magnetic pump due to a difference between a heat quantity transferred from the heat receiving part indirectly to the magnetic pump and the heat quantity of the magnetic fluid led into the magnetic pump.

1 . A magnetic convection heat pump comprising a heat receiving section, a heat discharging section, a circulation path for a magnetic fluid, and at least one magnet member for magnetically driving said magnetic fluid, wherein said magnet member is disposed in said circulation path in such a way that a portion thereof lies in said heat receiving section whereby a temperature gradient is created in said magnetic fluid flowing through said circulation path in the vicinity of said magnet member. 
   
   
       2 . A magnetic convection heat pump comprising a heat receiving section, a heat discharging section, a magnetic pump section including at least one magnet member and being thermally coupled to said heat receiving section, and a circulation path for circulating a magnetic fluid, said circulation path connecting said heat receiving section, said heat discharging section and said magnetic pump section in fluid communication, wherein said magnet member is disposed in said circulation path in such a way that a portion thereof lies in said heat receiving section whereby a temperature gradient is created in said magnetic fluid flowing through said circulation path in the vicinity of said magnet member. 
   
   
       3 . The magnetic convection heat pump according to  claim 1  wherein said circulation path comprises a length of conduit. 
   
   
       4 . The magnetic convection heat pump according to  claim 1  wherein said magnetic fluid contains a particulate ferromagnetic material having an average particle size less than 30 μm, said ferromagnetic material being a ferrite comprised of a divalent transitional metal and iron oxide. 
   
   
       5 . The magnetic convection heat convection pump according to  claim 1  wherein said magnetic fluid is an ionic liquid exhibity magnetism 
   
   
       6 . The magnetic convection heat convection pump according to  claim 1  wherein said heat receiving section and said heat discharging section are detachably connected to each other. 
   
   
       7 . The magnetic convection heat pump according to  claim 2  wherein said magnetic flow path extends in said heat receiving section and said magnetic pump to form a common magnetic flow section for both of them. 
   
   
       8 . The magnetic convection heat pump according to  claim 2  wherein said heat receiving section and said magnetic pump are constructed from different materials having mutually different heat conductivity values. 
   
   
       9 . The magnetic convection heat pump according to  claim 2 , wherein said magnetic fluid contains a particulate ferromagnetic material having a coating of an ionic surfactant, and wherein said magnet member has on their surfaces with which said magnetic fluid contacts a coating of the same ionic surfactant as the coating of said particulate ferromagnetic material. 
   
   
       10 . The magnetic convection heat pump according to  claim 2  wherein said magnet member has on their surfaces with which said magnetic fluid contacts an oil-repellent coating.