Apparatus for heating vehicle seat

Abstract

The present invention relates to an electric heating element. The electric heating element includes a core support, an inner wire wound around the core support, an intermediate dielectric layer formed around the inner wire, an outer wire wound around the intermediate dielectric layer, a connector connecting an end of the inner wire to an end of the outer wire, and an outer sheath formed around the outer wire, wherein the inner wire and outer wire are arranged to have opposite phases according to a direction of a current to attenuate magnetic fields generated from the inner wire and outer wire when a power is applied to the to inner wire and outer wire.

1 . An electric heating element comprising:
 a core support;   an inner wire wound around the core support;   an intermediate dielectric layer formed around the inner wire;   an outer wire wound around the intermediate dielectric layer;   a connector connecting an end of the inner wire to an end of the outer wire; and   an outer sheath formed around the outer wire,   wherein the inner wire and outer wire are arranged to have opposite phases according to a direction of a current to attenuate electromagnetic fields generated from the inner wire and outer wire when a power is applied to the to inner wire and outer wire.   
   
   
       2 . The electric heating element of  claim 1 , wherein the inner wire is wound at a helical pitch of approximately 1 mm. 
   
   
       3 . The electric heating element of  claim 1 , wherein the inner wire is an enameled copper wire. 
   
   
       4 . The electric heating element of  claim 1 , wherein the inner wire has a diameter of approximately 0.23 mm. 
   
   
       5 . The electric heating element of  claim 1 , wherein the outer wire is wound at a helical pitch of approximately 1 mm. 
   
   
       6 . The electric heating element of  claim 1 , wherein the outer wire is an alloy wire. 
   
   
       7 . The electric heating element of  claim 1 , wherein the outer wire has a resistance value substantially equal to the electric heating element. 
   
   
       8 . The electric heating element of  claim 1 , wherein the core support is a glass yarn. 
   
   
       9 . The electric heating element of  claim 1 , wherein the intermediate dielectric layer comprises a silicon resin. 
   
   
       10 . The electric heating element of  claim 1 , wherein the power applied to the inner wire and outer wire is between 12 V and 24 V. 
   
   
       11 . An apparatus for heating a vehicle seat, the apparatus comprising:
 an electric heating element mounted in the vehicle seat, the electric heating element comprising a core support, an inner wire wound around the core support, an intermediate dielectric layer formed around the inner wire, an outer wire wound around the intermediate dielectric layer, a connector connecting an end of the inner wire to an end of the outer wire, and an outer sheath formed around the outer wire;   a power supply for transferring power from the vehicle to the inner wire and outer wire; and   a switch installed on the power supply for regulating the power transferred from the vehicle to the inner wire and outer wire,   wherein the inner wire and outer wire are arranged to have opposite phases according to a direction of a current to attenuate electromagnetic fields generated from the inner wire and outer wire when the power is transferred to the inner wire and outer wire.   
   
   
       12 . The apparatus of  claim 11 , wherein the inner wire is wound at a helical pitch of approximately 1 mm. 
   
   
       13 . The apparatus of  claim 11 , wherein the inner wire is an enameled copper wire. 
   
   
       14 . The apparatus of  claim 11 , wherein the inner wire has a diameter of approximately 0.23 mm. 
   
   
       15 . The apparatus of  claim 11 , wherein the outer wire is wound at a helical pitch of approximately 1 mm. 
   
   
       16 . The apparatus of  claim 11 , wherein the outer wire is an alloy wire. 
   
   
       17 . The apparatus of  claim 11 , wherein the outer wire has a resistance value substantially equal to the electric heating element. 
   
   
       18 . The apparatus of  claim 11 , wherein the core support is a glass yarn. 
   
   
       19 . The apparatus of  claim 11 , wherein the intermediate dielectric layer comprises a silicon resin. 
   
   
       20 . The apparatus of  claim 11 , wherein the power transferred to the inner wire and outer wire is between 12 V and 24 V.