Air-Conditioning System for Technical Wear

Abstract

The present invention relates to a thermoelectric motor ( 3 ) in which a material is interposed between the external plate ( 12 ) of a thermoelectric module and an external heat exchanger ( 4 ), to reduce heat resistance therebetween; the present invention further relates to a thermoelectric motor ( 3 ) in which the heat-carrying fluid flows directly over the internal plate ( 13 ) of a thermoelectric module, a temperature controlled garment with an inner metal layer and a convex heat exchanger.

1 . Thermoelectric motor, comprising:
 a thermoelectric module comprising an external plate and an internal plate with Peltier elements interposed therebetween, which are suitable for creating a temperature difference between said external plate and said internal plate when energized;   an internal heat exchanger defining a working fluid guiding path so that a working liquid can exchange heat with said internal plate;   wherein   said fluid path of said internal heat exchanger allows such working liquid to flow directly over said internal plate, at least over a contact area, so that said internal plate directly exchanges heat with said working liquid;   said thermoelectric motor further comprising:   an external heat exchanger for exchanging heat with the external environment;   a thermoelectric module comprising an external plate and an internal plate with Peltier elements interposed therebetween, which are suitable to create a temperature difference between said external plate and said internal plate when energized;   said external plate of said thermoelectric module being in thermal contact with said external heat exchanger;   wherein   a material is interposed between said external plate and said external heat exchanger, having a thermal resistance per unit area of less than 0.05 cm 2 ° C./W.   
   
   
       2 . A thermoelectric motor as claimed in any one of  claim 1 , wherein said internal heat exchanger further has inlet and outlet ports for the heat-carrying fluid and at least one opening at said contact area, said opening being closed by said internal plate. 
   
   
       3 . A thermoelectric motor as claimed in  claim 2 , wherein said internal heat exchanger has protuberances for increasing the turbulence of said heat-carrying fluid flow at said contact area. 
   
   
       4 . A thermoelectric motor as claimed in  claim 3 , wherein said internal plate is glued to said internal heat exchanger. 
   
   
       5 . A thermoelectric motor as claimed in  claim 1 , wherein said material is selected from the group consisting of: graphite, graphite-containing materials, phase transition thermal pastes. 
   
   
       6 . A thermoelectric motor as claimed in  claim 5 , wherein said phase transition thermal paste has a melting point above 50° C. and below 100° C. 
   
   
       7 . A thermoelectric motor as claimed in  claim 2 , wherein said external heat exchanger is made from a material selected from the group consisting of: aluminum, aluminum alloys, graphite, materials which substantially comprise graphite. 
   
   
       8 . A thermoelectric motor as claimed in  claim 7 , wherein said external heat exchanger has one or more heat exchanging fins for exchanging heat with ambient air. 
   
   
       9 . A thermoelectric motor as claimed in  claim 8 , wherein said external heat exchanger is formed of graphite sheets in such arrangement that the main planes of said fins are parallel to said graphite sheets. 
   
   
       10 . A thermoelectric motor as claimed in  claim 9 , wherein said external heat exchanger has a size, as measured perpendicular to said preferred heat conduction plane, which is substantially not larger than the overall size, as measured along the same axis, of said thermoelectric module. 
   
   
       11 . A thermoelectric motor as claimed in  claim 9 , comprising a plurality of said thermoelectric modules, together forming a thermoelectric unit, wherein said external heat exchanger has a size, as measured perpendicular to said preferred heat conduction plane, which is substantially not larger than the overall size, as measured along the same axis, of said thermoelectric module.