Thermoelectric assemblies with plastic moisture barriers
A thermoelectric assembly includes a thermoelectric module having a hot side and a cold side, a first heat exchanger coupled to the hot side of the thermoelectric module, a second heat exchanger coupled to the cold side of the thermoelectric module, a gasket positioned between the first heat exchanger and the second heat exchanger and defining an opening for receiving the thermoelectric module, and a plastic barrier film. The gasket includes an inner perimeter adjacent to the thermoelectric module and an outer perimeter distal to the thermoelectric module. The plastic barrier film is coupled to at least a portion of the outer perimeter of the gasket to substantially inhibit an ingress of moisture to the gasket and the thermoelectric module. Other example thermoelectric assemblies are also disclosed.
1. A thermoelectric assembly comprising:
a thermoelectric module including a hot side and a cold side;
a first heat exchanger coupled to the hot side of the thermoelectric module;
a second heat exchanger coupled to the cold side of the thermoelectric module;
a gasket positioned between the first heat exchanger and the second heat exchanger and defining an opening for receiving the thermoelectric module, the gasket including an inner perimeter adjacent to the thermoelectric module and an outer perimeter distal to the thermoelectric module; and
a dielectric plastic barrier film, the dielectric plastic barrier film adhesively coupled to at least a portion of the outer perimeter of the gasket to substantially inhibit an ingress of moisture to the gasket and the thermoelectric module, wherein the dielectric plastic barrier film includes a thermoplastic material with a plastic material coated thereon.
2. The thermoelectric assembly of claim 1 , wherein the dielectric plastic barrier film consists essentially of plastic.
3. The thermoelectric assembly of claim 1 , wherein the dielectric plastic barrier film consists only of plastic.
4. The thermoelectric assembly of claim 1 , wherein the dielectric plastic barrier film plastic includes only one or more plastic materials.
5. The thermoelectric assembly of claim 1 , wherein the dielectric plastic barrier film consists essentially of a polyimide.
6. The thermoelectric assembly of claim 1 , wherein the dielectric plastic barrier film consists of only one or more plastic materials such that the dielectric plastic barrier film does not include metal, metalized plastic, ceramic, or glass.
7. The thermoelectric assembly of claim 1 , wherein the dielectric plastic barrier film is adhesively coupled to the entire outer perimeter of the gasket.
8. The thermoelectric assembly of claim 7 , wherein the dielectric plastic barrier film includes a single continuous segment adhesively coupled to the entire outer perimeter of the gasket.
9. The thermoelectric assembly of claim 7 , wherein the gasket includes a plurality of surfaces defining the outer perimeter, wherein the dielectric plastic barrier film includes a plurality of segments each coupled to a different one of the plurality of surfaces of the gasket.
10. The thermoelectric assembly of claim 1 , wherein the dielectric plastic barrier film is adhesively coupled, via a room-temperature-vulcanizing (RTV) silicone adhesive, to the entire outer perimeter of the gasket, and wherein:
the dielectric plastic barrier film consists of only one or more plastic materials such that the dielectric plastic barrier film does not include metal, metalized plastic, ceramic, or glass;
the dielectric plastic barrier film is configured to have a water vapor permeability between 1 and 20 g/m 2 *24 hr (according to the ASTM E96 test method); and
the dielectric plastic barrier film is configured to have a moisture absorption rate between 0.2 and 1.5% at 23° C. and 50% RH (according to the ASTM D570 test method).
11. The thermoelectric assembly of claim 1 , wherein:
the dielectric plastic barrier film includes a plurality of edge surfaces; and
the thermoelectric assembly further comprises an adhesive material disposed along at least one of the plurality of the edge surfaces of the dielectric plastic barrier film to adhere the dielectric plastic barrier film to the gasket.
12. The thermoelectric assembly of claim 1 , wherein the first heat exchanger includes a cold sink and/or the second heat exchanger includes a hot sink.
13. The thermoelectric assembly of claim 1 , wherein the gasket includes foam.
14. The thermoelectric assembly of claim 1 , wherein:
the first heat exchanger includes a base;
the second heat exchanger includes a base having an edge; and
the dielectric plastic barrier film is adhesively coupled to the outer perimeter of the gasket and extends between the base of the first heat exchanger and the edge of the base of the second heat exchanger.
15. The thermoelectric assembly of claim 1 , wherein:
the dielectric plastic barrier film is configured to have a water vapor permeability between 1 and 20 g/m 2 *24 hr (according to the ASTM E96 test method); and/or
the dielectric plastic barrier film is configured to have a moisture absorption rate between 0.2 and 1.5% at 23° C. and 50% RH (according to the ASTM D570 test method).
16. The thermoelectric assembly of claim 1 , wherein:
the thermoelectric module comprises first and second thermoelectric modules each including a hot side and a cold side;
the first heat exchanger is coupled to the hot sides of the first and the second thermoelectric modules;
the second heat exchanger is coupled to the cold sides of the first and the second thermoelectric modules;
the gasket defines the opening for receiving the first and the second thermoelectric modules; and
the dielectric plastic barrier film is adhesively coupled to at least a portion of the outer perimeter of the gasket to substantially inhibit the ingress of moisture to the gasket and the first and the second thermoelectric modules.
17. A thermoelectric assembly comprising:
a thermoelectric module including a hot side and a cold side;
a first heat exchanger coupled to the hot side of the thermoelectric module;
a second heat exchanger coupled to the cold side of the thermoelectric module;
a gasket positioned between the first heat exchanger and the second heat exchanger and defining an opening for receiving the thermoelectric module, the gasket including an inner perimeter adjacent to the thermoelectric module and an outer perimeter distal to the thermoelectric module; and
a dielectric barrier film consisting of plastic, the dielectric barrier film adhesively coupled to at least a portion of the outer perimeter of the gasket to substantially inhibit an ingress of moisture to the gasket and the thermoelectric module, wherein the dielectric barrier film includes a thermoplastic material with a plastic material coated thereon.
18. The thermoelectric assembly of claim 17 , wherein:
the dielectric barrier film consists of only one or more plastic materials such that the barrier film does not include metal, metalized plastic, ceramic, or glass;
the thermoelectric module comprises first and second thermoelectric modules each including the hot side and the cold side;
the first heat exchanger is coupled to the hot sides of the first and the second thermoelectric modules;
the second heat exchanger is coupled to the cold sides of the first and the second thermoelectric modules;
the gasket defines the opening for receiving the first and the second thermoelectric modules; and
the dielectric barrier film is adhesively coupled to at least a portion of the outer perimeter of the gasket to substantially inhibit the ingress of moisture to the gasket and the first and the second thermoelectric modules.
19. A thermoelectric assembly comprising:
a thermoelectric module including a hot side and a cold side;
a first heat exchanger coupled to the hot side of the thermoelectric module;
a second heat exchanger coupled to the cold side of the thermoelectric module;
a gasket positioned between the first heat exchanger and the second heat exchanger and defining an opening for receiving the thermoelectric module, the gasket including an inner perimeter adjacent to the thermoelectric module and an outer perimeter distal to the thermoelectric module; and
a dielectric barrier film consisting essentially of plastic, the dielectric barrier film adhesively coupled to at least a portion of the outer perimeter of the gasket to substantially inhibit an ingress of moisture to the gasket and the thermoelectric module, wherein the dielectric barrier film includes a thermoplastic material with a plastic material coated thereon.
20. The thermoelectric assembly of claim 19 , wherein:
the dielectric barrier film consists of only one or more plastic materials such that the barrier film does not include metal, metalized plastic, ceramic, or glass;
the thermoelectric module comprises the first and the second thermoelectric modules each including a hot side and a cold side;
the first heat exchanger is coupled to the hot sides of the first and the second thermoelectric modules;
the second heat exchanger is coupled to the cold sides of the first and the second thermoelectric modules;
the gasket defines the opening for receiving the first and the second thermoelectric modules; and
the dielectric barrier film is adhesively coupled to at least a portion of the outer perimeter of the gasket to substantially inhibit the ingress of moisture to the gasket and the first and the second thermoelectric modules.