EMR absorbing server vent
In one aspect, a vent for use in an electronic device for absorbing electromagnetic radiation is disclosed, which includes a body comprising at least one thermoplastic polymer and a radiation-absorbing filler distributed within said thermoplastic polymer for absorbing electromagnetic radiation, said body further comprising a plurality of openings. The body is adapted for coupling to a frame of an electronic device to absorb electromagnetic radiation and to allow heat transfer via air flow through said openings between an interior of the frame and an external environment.
1. A vent for use in an electronic device for absorbing electromagnetic radiation, comprising:
a body comprising at least one thermoplastic polymer and a radiation-absorbing filler distributed within said thermoplastic polymer for absorbing electromagnetic radiation, wherein said filler comprises any of carbon black, carbon fiber, and graphene,
said body further comprising a plurality of openings,
wherein said body is adapted for coupling to a frame of an electronic device to absorb electromagnetic radiation and to allow heat transfer via air flow through said openings between an interior of the frame and an external environment, and
wherein the vent exhibits an insertion loss greater than about −5 dB for radiation frequencies in a range of about 1 GHz to about 110 GHz.
2. The vent of claim 1 , wherein said thermoplastic polymer comprises any of a polycarbonate, ABS, polypropylene, polystyrene, polyamide, polyester, polyetherimide, liquid crystal polymer, or polyphenylene sulfide.
3. The vent of claim 1 , wherein said filler exhibits an absorptance coefficient greater than 45 ml.
4. The vent of claim 1 , wherein a concentration of said thermoplastic polymer is in a range of about 50 percent to about 99.8 percent by volume.
5. The vent of claim 1 , wherein a concentration of said filler is in a range of about 0.2 percent to about 50 percent by volume.
6. The vent of claim 1 , wherein said body further comprises a flame retardant additive.
7. The vent of claim 6 , wherein said flame retardant additive comprises any of aluminum trihydrate, aluminum hydroxide, magnesium hydroxide, antimony oxides, ammonium polyphosphate or other organo phosphorus compounds, chlorinated compounds, or brominated compounds.
8. The vent of claim 6 , wherein a concentration of said flame retardant additive is in a range of about 0.01 percent to about 50 percent by volume.
9. The vent of claim 1 , wherein said openings have a largest dimension in a range of about 0.045 inches to about 5 inches.
10. The vent of claim 1 , wherein said openings have a geometrical shape.
11. The vent of claim 10 , wherein said geometrical shape is any of circular, hexagonal, square, and rectangular shape.
12. The vent of claim 1 , wherein said vent exhibits an insertion loss in excess of about −5 dB for radiation frequencies in a range of about 1 GHz to about 40 GHz.
13. The vent of claim 12 , wherein said vent exhibits an insertion loss in a range of about −5 dB to about −35 dB for radiation frequencies in a range of about 1 GHz to about 40 GHz.
14. The vent of claim 1 , wherein said filler comprises a plurality of particles having a maximum size in a range of about 1 micron to about 100 microns.
15. A computer enclosure, comprising:
a frame for housing a plurality of electronic components,
a vent adapted for coupling to the frame for absorbing electromagnetic radiation, said vent comprising:
a body comprising at least one thermoplastic polymer and a radiation-absorbing filler distributed within said thermoplastic polymer for absorbing electromagnetic radiation, wherein said filler comprises any of carbon black, carbon fiber, and graphene,
said body further comprising a plurality of openings,
wherein said body is adapted to absorb electromagnetic radiation and to allow heat transfer via air flow through said openings between an interior of the frame and an external environment, and
wherein the vent exhibits an insertion loss greater than about −5 dB for radiation frequencies in a range of about 1 GHz to about 110 GHz.
16. The computer enclosure of claim 15 , wherein said vent is adapted to absorb electromagnetic radiation generated by one or more of said electronic components.
17. The computer enclosure of claim 16 , wherein said insertion loss is in a range of about −5 dB to about −35 dB.
18. The computer enclosure of claim 15 , wherein said vent exhibits an insertion loss greater than about −5 dB for radiation frequencies in a range of about 1 GHz to about 40 GHz.
19. The computer enclosure of claim 15 , wherein said thermoplastic polymer comprises any of a polycarbonate, ABS, polypropylene, polystyrene, polyamide, polyester, polyetherimide, liquid crystal polymer, or polyphenylene sulfide.
20. The computer enclosure of claim 15 , wherein a concentration of said thermoplastic polymer in said vent is in a range of about 50 percent to about 99.8 percent by volume.
21. The computer enclosure of claim 15 , wherein a concentration of said radiation-absorbing filler in said vent is in a range of about 0.2 percent to about 50 percent by volume.
22. The computer enclosure of claim 15 , wherein said body further comprises a flame retardant additive.
23. The computer enclosure of claim 15 , wherein at least one of said enclosed electronic components comprises a central processing unit (CPU).