Gas fired radiant heating unit and method of operation thereof
AssigneeHeat Design Equipment Inc.
InventorRobert E. Kieswetter
Life of this patent
Estimating the term…
Abstract
A heating unit has a cartridge that constitutes a single component, which can be readily removed and replaced with a new cartridge. The cartridge is a plurality of non-flammable layers bound together in a border. The layers include a stainless steel mesh located above a layer of ceramic wool. With the cartridge, replacement can be accomplished in approximately fifty minutes compared to a downtown of a week or more previously.
Claims15
A radiant heating unit comprising:
- (a) a supply for providing a quantity of fuel in vapor form at a predetermined pressure;
- (b) means to mix air into said fuel to produce a combustible fuel/air mixture;
- (c) a housing having a periphery surrounding an open bottom;
- (d) a removable and replaceable cartridge being affixed to said periphery, said cartridge covering said open bottom, with a skirt extending downward beyond said cartridge, said housing and said cartridge defining a chamber, said cartridge separating said chamber from ambient air;
- (e) said chamber being connected to receive said fuel/air mixture;
- (f) said cartridge being removable from and replaceable in said housing, said cartridge containing multiple layers of nonflammable materials that are bound together into one unit, said layers being porous enough to allow said fuel/air mixture to pass through said layers but sufficiently dense to prevent large amounts of ambient air from entering said chamber through said cartridge so that combustion occurs at an outer surface of an outermost layer.
A radiant heating unit as claimed in claim 2 wherein one layer of the cartridge is ceramic wool.
A method of operating a radiant heating unit having a housing with an open bottom and a cartridge covering said bottom with a skirt extending downward from said cartridge, said cartridge being sandwiched between said housing and said skirt by retainers, said cartridge and housing defining a chamber, said method comprising the steps of commencing with a cartridge installed in said unit, when said cartridge becomes worn, removing said cartridge from said housing on site by removing said retainers, separating said skirt from said cartridge, replacing said cartridge with a replacement cartridge and attaching said skirt to retainers, said housing with said cartridge sandwiched in between by reattaching said retainers.
Dependencies are inferred from the claim text.