Catalytic heater
First Claim
Patent Images
1. A catalytic heater comprising:
- a) casing means, said casing means including side walls, a rear wall and end walls;
screen means closing an open front end of said casing means;
catalyst pad means in said casing means adjacent to said screen means;
diffuser pad means in said casing means between said catalyst pad means and said rear wall for distributing a fuel mixture to said catalyst pad means; and
inlet means in said rear wall of said casing means for introducing the fuel mixture into said casing means;
b) said diffuser pad means includes a first, high density ceramic fiber pad adjacent said rear wall, a plurality of low density ceramic second fiber pads between said first pad and said catalyst pad means, and high density ceramic fiber dike means separating said second fiber pads from each other; and
c) said inlet means includes separate inlets for introducing the fuel mixture into each of said second pads.
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Abstract
In general, catalytic heaters which rely on ambient air for operation are self limiting. A simple, effective solution to the problem includes a casing with an open front end, a screen on such front end, a catalyst pad in the casing behind the screen, and diffuser pads for receiving a gas/air fuel mixture from a mixer which creates the mixture and introduces the mixture through the rear wall of the casing. Channels or dikes in the diffuser pads ensure even distribution of the gas/air fuel mixture to the catalyst pad.
30 Citations
13 Claims
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1. A catalytic heater comprising:
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a) casing means, said casing means including side walls, a rear wall and end walls;
screen means closing an open front end of said casing means;
catalyst pad means in said casing means adjacent to said screen means;
diffuser pad means in said casing means between said catalyst pad means and said rear wall for distributing a fuel mixture to said catalyst pad means; and
inlet means in said rear wall of said casing means for introducing the fuel mixture into said casing means;b) said diffuser pad means includes a first, high density ceramic fiber pad adjacent said rear wall, a plurality of low density ceramic second fiber pads between said first pad and said catalyst pad means, and high density ceramic fiber dike means separating said second fiber pads from each other; and c) said inlet means includes separate inlets for introducing the fuel mixture into each of said second pads. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A catalytic heater comprising:
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a) casing means including side walls, a rear wall and end walls and an open front end; b) screen means closing the open front end of said casing means; c) catalyst pad means in said casing means adjacent to said screen means; d) diffuser pad means in said casing means between said catalyst pad means and said rear wall for distributing a fuel mixture to said catalyst pad means; e) inlet means in said rear wall of said casing means for introducing the fuel mixture into said casing means; f) said diffuser pad means having a first portion forming a uniform layer between said casing means and said catalyst pad means; g) said diffuser pad means having second and third portions located between said first portion and said casing means; h) said second and third portions being spaced apart a sufficient distance to form a distinct passage; and
,i) whereby, the passage promotes the uniform flow of the fuel mixture along the length of said casing means. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification