Heating and cooling technologies
A heating and cooling device is disclosed comprising at least one integral low voltage heating and cooling source and an efficient flexible heat distribution means having a thermal conductivity of from 375 to 4000 W/mK for distributing the heat and cool across a surface. Further aspects include thermal interface compounds to provide full thermal contact as well as the use of a phase change material to provide a long lasting heating and/or cooling effect without the use of external electrical input. Preferred applications include automotive and furniture seating heating and cooling, along with outdoor garments having distributed heating and cooling effects.
1. A heating and cooling system having a sheeted thermally conductive material for distributing heat or coolness across a surface configured to contact a person, the system comprising:
a heating and cooling source for generating heat or coolness;
a heat transfer plate in thermal communication with the heating and cooling source, the heat transfer plate configured to distribute heat or coolness generated by the heating and cooling source, the heat transfer plate comprising needles extending from a surface of the heat transfer plate;
a flexible sheeted thermally conductive material in thermal communication with the heat transfer plate, the flexible sheeted thermally conductive material configured to distribute heat or coolness generated by the heating and cooling source over a distribution area across the surface configured to contact the person larger than a surface of the heating and cooling source itself,
wherein the needles extend from the surface of the heat transfer plate into the flexible sheeted thermally conductive material to transfer heat between the heating and cooling source and the flexible sheeted thermally conductive material; and
a film layer surrounding the flexible sheeted thermally conductive material, the needles extending through the film layer into the flexible sheeted thermally conductive material,
wherein the needles extend through the film layer on a first side of the flexible sheeted thermally conductive material without extending through the film layer on a second side of the flexible sheeted thermally conductive material, the first side opposite the second side.
2. The system of claim 1 , wherein the needles comprise at least one of copper, aluminum, or graphite.
3. The system of claim 1 , wherein the needles extend through a heat transfer compound into the flexible sheeted thermally conductive material, the heat transfer compound positioned between the heat transfer plate and the flexible sheeted thermally conductive material.
4. The system of claim 1 , wherein the flexible sheeted thermally conductive material comprises graphene.
5. The system of claim 1 , wherein the flexible sheeted thermally conductive material comprises panels of material separated by slits.
6. The system of claim 5 , further comprising a thermally conductive ring connected to the panels of material, the thermally conductive ring thermally connecting the panels of material between the slits.
7. The system of claim 1 , wherein the flexible sheeted thermally conductive material comprises strips of material.
8. The system of claim 1 , wherein the heating and cooling source comprises a thermoelectric device.
9. The system of claim 1 , wherein the film layer comprises plastic or polyurethane.
10. A heating and cooling system having a sheeted thermally conductive material for distributing heat or coolness across a surface configured to contact a person, the system comprising:
a heating and cooling source for generating heat or coolness;
a flexible sheeted thermally conductive material in thermal communication with the heating and cooling source, the flexible sheeted thermally conductive material configured to distribute heat or coolness generated by the heating and cooling source over a distribution area across the surface configured to contact the person larger than a surface of the heating and cooling source itself; and
a film layer surrounding the flexible sheeted thermally conductive material, the film layer comprising perforations, wherein a thermal interface compound is positioned within the perforations to provide thermal communication between the heating and cooling source and the flexible sheeted thermally conductive material,
wherein the film layer comprises the perforations both on a first side of the flexible sheeted thermally conductive material and on a second side of the flexible sheeted thermally conductive material, the first side opposite the second side, and
wherein the perforations on the first side are offset relative to the perforations on the second side.
11. The system of claim 10 , further comprising a heat transfer block configured to distribute heat or coolness generated by the heating and cooling source, the film layer positioned over the heat transfer block, the thermal interface compound thermally connecting the heat transfer block and the flexible sheeted thermally conductive material.
12. The system of claim 10 , wherein the film layer comprises plastic or polyurethane.
13. The system of claim 10 , wherein the flexible sheeted thermally conductive material comprises graphene.
14. The system of claim 10 , wherein the heating and cooling source comprises a thermoelectric device.
15. The system of claim 10 , wherein the flexible sheeted thermally conductive material comprises panels of material separated by slits.
16. The system of claim 15 , further comprising a thermally conductive ring connected to the panels of material, the thermally conductive ring thermally connecting the panels of material between the slits.
17. The system of claim 10 , wherein the flexible sheeted thermally conductive material comprises strips of material.