Abstract: A housing for an outdoor gas fired construction heater that incorporates a one-piece shell design that sits on and mounts directly to the base. Openings are used in the sides near the top and the bottom of the shell to provide the burner system with a metered amount of inlet air. Integrally formed, inwardly and downwardly projecting panels protect the burner system from debris, drafts at floor level, and to shield the floor on which the burner sits from infrared energy. In order to increase the strength of the top and shell assembly, the top sits on and is directly mounted to the shell. The shell height and top openings are of a size to allow heat out but to prevent drafts from pulling the flame out of the top of the heater.

Abstract: A forced air, wall heater includes a heat exchanger which has a plurality of tubes. Each of the tubes include substantially parallel aligned runs and at least one return section between adjacent runs. The return section is aligned generally perpendicular with each of the plurality of runs. The heater also includes a blower positioned for blowing air directly toward the return section to maximize the mass flow rate of air over the return section. At least two of the runs are offset both laterally and in the direction of air flow with respect to each other. The ordering of tubes differs in at least two positions within the exchanger.

Abstract: Presented is a wall heater or furnace extension structure for mounting in the space between a conventional wall furnace or heater and the ceiling of the room in which the wall furnace or heater are installed. The wall material normally found in this area of the wall is removed to expose the flue connected to the fire-box of the furnace or heater. The furnace extension structure is mounted on the wall so as to enclose the flue, draw air from the room into the space surrounding the flue, and then discharge the heated air back into the room from which it emanated.

Abstract: A wall furnace is disclosed in which a secondary heat exchanger is provided to maximize the heat transfer efficiency of the furnace. The secondary heat exchanger faces the room to be heated but is aligned directly behind the primary heat exchanger. The length of the secondary heat exchanger is shortened as compared to the combined length of the combustion chamber and primary heat exchanger so as to reduce inefficiencies due to reheating of the combustion gases and to promote air flow and heat transfer around the secondary heat exchanger. Thus, this configuration provides for two essentially separate circulation circuits for heat transfer and maximum furnace efficiency. Separate heated air deflectors are also provided for each of these circuits. A side venting draft hood is also disclosed.

Abstract: A carbon desorption heater (10) for use in a system for removing volatile organic contaminants from a carbon filter is disclosed as having a housing (30) in which a recirculating heating circuit (36) is provided with a recirculation blower (44) that moves the air past a burner (50) for flow through a first flow path (60) of a heat exchanger (58) with a portion of the recirculated air exhausted during each cycle of flow through an exhaust stack outlet (52). A delivery blower (64) within the housing (30) moves air through a second flow path (62) of the heat exchanger (58) for heating prior to delivery to a supply outlet (34). The heater includes a plurality of modules (90) that are sufficiently small so as to be shippable and subsequently securable to each other at the factory site where the heater is to be used.

Abstract: A heating and ventilation unit has a ceramic heat wheel rotatable within a housing between first and second plenums through which fresh and stale air, respectively, are forced to pass in a hot air ventilation system. The heat wheel is made of cordierite material such as is used in catalytic conversion systems for automobiles. It is formed with non-communicating and axially-extending parallel pores having a pore density of 62 pores per sq. cm. As it rotates the heat wheel transfers to the fresh air both the heat generated by a gas burner in the second plenum, and also low grate heat contained in the stale air. The burner is housed within a combustion housing by means of which the combustion gases are confined to a generally D-shaped area of the heat wheel.

Abstract: This invention relates to a sauna device with an infrared ray radiation sauna heater such that cooling air is introduced into the infrared ray radiation tube heated by combustion heat of fuel such as gas or the like to lower the temperature of the infrared ray radiation tube and radiate far infrared ray absorbable into the human body.It can be made up as the compact sauna device usable in home equipping the combustion devices in a box like mechanic chamber (114) placed at lower portion of the seat (111) in the sauna chamber.It is able to assemble, as the rear wall (102), the side walls (105, 107) the front wall (108) and the ceiling plate (104) can be assembled by engaging the project and groove joint.Attaching laundry rod holders (2210-1, 2210-2) containing a safety switch in the sauna chamber, on which the laundry rod (2209) is hung, it is available to use the sauna chamber as a drying chamber for laundry.

Abstract: This invention provides improved gas-fired heater means for supplying heat to a space, such as a room, house, building, vehicle, or the like.

Abstract: A device for mounting a gas-fired heating apparatus on a wall and connecting it through a flue for communication with the outside of the wall. The flue comprises inner and outer coaxial tubular members defining inner and outer conduits for carrying combustion supporting air from the exterior to the heating apparatus and combustion gases from the heating apparatus to the exterior. A register admitting combustion supporting air and venting combustion gases is fitted at the free end of the flue remote from the heating apparatus. A support plate has a circular aperture in a base for locating the support plate on the outer coaxial tubular member and wings cooperable with fittings on the heating apparatus for supporting the heating apparatus. A gasket with a retaining collar is received along a portion of the support plate and tightened on the outer coaxial tubular member.

Abstract: A downflow furnace assembly having a combustible floor base including a pair of parallel side rails, a pair of parallel, variable length cross rails, and integral spacing flanges, and a method of constructing the combustible floor base. The integral spacing flanges are for maintaining the lower plenum of the downflow furnace assembly at a preset distance from the edge of a combustible floor and are formed by die pressing the same metal sheets that are pressed to form the rails of the floor base. The variable length cross rails are each comprised of a pair of interfitted channel members that are in slidable communication with each other. By sliding the channel members with respect to each other, the lengths of the cross rails and the width of the base can be adjusted. The surface of each channel member defines a plurality of holes, and each cross rail can be adjusted to various preset lengths by aligning different holes.

Abstract: A thermostat controlled window furnace for heating a room features a construction wherein the air required for its operation is comprised on the one hand of outside air used solely for combustion purposes, to service a heat transfer component, and on the other hand of air drawn from the room, to be heated in passage through the heat transfer unit and returned to the room to elevate its temperature. The arrangement provided for inflow of room air insures that it will exhibit the general temperature of the room. The furnace not only provides for an effective separation therein of outside air and room air which is utilized thereby but for a return to the room of heated air in a manner to inhibit a chance or premature intermingling thereof with that portion of the room air being drawn into the furnace the function of which, in part, is to signal the general temperature of the room to a furnace thermostat.

Abstract: A floor furnace heating system including a specially constructed floor furnace adapted to discharge heated air at floor level with a strong radially outward motion component so as to spread horizontally over most of the room area before rising due to its lowered density, the cold air returns to the furnace also being disposed to assist in this spreading of the heated air at lower levels of the room.

Abstract: An air terminal for a horizontal vent of a sealed combustion furnace includes a faceplate for mounting to an exterior vertical wall. A horizontal flue pipe extension, receiving the combustion products, is surrounded by an oval sleeve. Fresh air is communicated to the furnace through the space between the flue pipe and the sleeve. The outlet of the flue pipe is at least about 3/4 in. outside the faceplate. An enlarged fresh air intake opening exists about the flue pipe, and a pocket-shaped rain shield is located beneath the flue pipe extending upwardly and inwardly. A horizontal wind deflector vane is located beneath the flue pipe and extends across the width of the fresh air intake opening for directing incident wind downwardly along the wall. The terminal improves operation of the furnace under all wind conditions, whether the furnace is operating on pilot or main burner modes.