Chemical apparatus and process disinfecting – deodorizing – preser – Control element responsive to a sensed operating condition
Reexamination Certificate
2004-12-29
2008-08-12
Bhat, N. (Department: 1797)
Chemical apparatus and process disinfecting, deodorizing, preser
Control element responsive to a sensed operating condition
C429S006000, C429S006000, C422S198000, C422S107000, C431S268000, C431S328000, C431S329000
Reexamination Certificate
active
07410619
ABSTRACT:
The medium (9), such as water, of a container (10), such as a fuel cell accumulator, is kept above freezing by a hydrogen/oxygen catalytic combustor (13) fed hydrogen from a source comprising a mechanical thermostatic valve (25) in thermal communication (26) with the container (10) and connected to a hydrogen supply (28). The combustor may comprise an ejector (32) having hydrogen through its primary inlet (31) drawing air through a secondary inlet (33). The combustor may comprise a diffusion combustor having a catalyst (38) spaced from a heating surface (30) and a diffusion control plate (40) low partial pressure of oxygen at the catalyst causing diffusion through the barrier. Water vapor from combustion condenses on a surface (146) and is led by hydrophilic woven carbon paper (126) to wicking material (133), which has smaller pores than the carbon paper, which leads the water downwardly, through a disk (140) and plugs (147) to atmospheric air. The noble metal catalyst mixture includes TEFLON® to permit water generated by combustion to flow by gravity out of the catalyst.
REFERENCES:
patent: 4631024 (1986-12-01), Shibata et al.
patent: 6797421 (2004-09-01), Assarabowski et al.
patent: 6902838 (2005-06-01), Lee et al.
patent: 6955861 (2005-10-01), Yoshizawa et al.
Cameron James
Reiser Carl A.
Resnick Gennady
Saito Kazuo
Bhat N.
UTC Power Corporation
Williams M. P.
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