Abstract: A heating unit can reduce the rate of power consumption for heating a vehicle, so that the running distance of the vehicle is increased and hence the battery charging cycle of the vehicle is prolonged. A heating unit of a vehicle heating system includes a casing made of a metal material capable of electromagnetically shielding microwaves, a support arranged in the hollow section of the casing, a plurality of microwave absorbing/heat emitting members arranged at the support and a microwave outputting unit arranged in the casing to output microwaves toward respective microwave absorbing/heat emitting members, blown air being heated by heat generated as a result of absorption of microwaves by the microwave absorbing/heat emitting members at the time for blown air to flow from the upstream side to the downstream side in the hollow sections of the microwave absorbing/heat emitting members.

Abstract: A convection heating apparatus capable of providing effective, high speed cooking without the assistance of microwave energy. The oven apparatus includes an exterior cabinet, a door, and a cooking chamber having interior side walls, a back wall, and a lower jet plate. The oven further includes a blower for circulating gas through the lower jet plate into the cooking chamber. In addition, the oven includes a product support disposed within the cooking chamber above said lower jet plate. The product support is disposed on a rail that is positioned to hold the lower jet plate in place when air is circulated therethrough. Optionally, the oven further includes an upper jet plate disposed within the cooking chamber above the product support. Temperature controlled gas is circulated through the upper jet plate toward the product support and any food product disposed on the product support.

Abstract: In an in-wall heater, in which control equipment 11, 12 is disposed in a side space 10 on one lateral side of a combustion housing 2 within an outer case 1 and an exhaust duct 15 is disposed in a side space 13 on the other lateral side of the combustion housing 2, the cooling performance of each of the side spaces is increased and noise due to a sucked-in sound of room air can be reduced. In a side plate portion of the outer case 1 on both lateral sides, an air intake opening 7, which is vertically long, is provided in a position in a front side portion exposed to a front of a room wall. Each side space 10, 13 within the outer case 1 is formed in a ventilation flue on the suction side where the room air from each of the air intake openings 7 is conducted into the warm air fan 9.

Abstract: A multi-purpose heating unit is sized and configured to be used with a variety of attachments or devices to perform various functions such as heating, cooking and providing light. In particular, the multi-purpose heating unit includes a heat source which can be used with a water heating attachment, an air heating attachment, a cooking attachment, and/or a light source attachment. Each of these attachments is configured to be selectively attachable to the heat source. Advantageously, because the same heat source is used in connection with these different devices, this decreases the size, weight and storage volume of these devices. This also allows the heating unit and some or all of the desired attachments or devices to be stored and transported in a relatively small container.

Abstract: A zero clearance fireplace of the type adapted to be installed against an outside wall of an interior space or room to be heated is provided with six walls which comprise four substantially vertical walls, a top wall and a bottom wall at least two of said vertical walls having airtight glass side walls connected to the frame structure of the fireplace. The bottom wall, the vertical side wall and the top wall are provided with plenum structures which are inner connected to form a heat exchanger. The rear wall is provided with a vertical inner plenum in which outside fresh air is introduced and conducted into a bottom inner plenum below the combustion chamber of the fireplace to provide fresh outside air to the gas burner system in the combustion chamber.

Abstract: A zero clearance fireplace of the type adapted to be installed against an outside wall of an interior space or room to be heated is provided with six walls which comprise four substantially vertical walls, a top wall and a bottom wall at least two of said vertical walls having airtight glass side walls connected to the frame structure of the fireplace. The bottom wall, the vertical side wall and the top wall are provided with plenum structures which are inner connected to form a heat exchanger. The rear wall is provided with a vertical inner plenum in which outside fresh air is introduced and conducted into a bottom inner plenum below the combustion chamber of the fireplace to provide fresh outside air to the gas burner system in the combustion chamber.

Abstract: A double walled fireplace insert is shown with an inner firebox and an outer shell to provide convection air channels between the parallel walls of the inner and outer units. A front panel is integral with the outer shell, and it covers the front of the insert. This front panel has room air intake vents that open into the said air channels, and warmed air outlet vents that open into the room to be heated by this fireplace. There is a circulating fan positioned within the convection air channels for governing the air movement through the said channels.

Abstract: A heating system designed to extract more than the usual amount of heat from a given amount of fuel by controlling the route of smoke from a firebox through a smoke duct over a tortuous path and exposing the walls of the smoke duct to ambient air, thereby increasing the efficiency of the heating system.

Abstract: A fireplace hood made as a massive solid structure defining the top of the firebox of the fireplace. The solid structure absorbs, stores the heat and radiates it when the fireplace is not in use. The massive structure is preferably made monolithic of a poured refractory material with internal hot gas flues open to a surface of the structure and in communication with the firebox for receiving hot gases. The hot gas flues open to a hot gas accumulator in communication with a tubular member for connection to the fireplace chimney. The fireplace has a convection tube system in its walls for heating cold air from the room in which the fireplace is disposed.

Abstract: A furnace for wood log fuel having apparatus which automatically inserts the logs into the furnace combustion chamber. The log fuel is retained in a sloping ramp storage compartment. Electrical circuitry controlled by a thermostat operates to move a log into an elongated chamber from which a motor driven injector pushes the log into the combustion chamber through a doorway covered by a flexible, segmented flap covering and also a door which is pushed open by the advancing log. The presence of the log on a spring mounted grate operates certain switches to return the injection mechanism to its ready condition and also to operate a fan which provides combustion air to the combustion chamber. The reduced weight on the grate by the consumption of the log by the fire permits the grate to move to a position to re-initiate the log injection cycle.

Abstract: A circulating air wood burning heating stove/fireplace combination has a combustion chamber that is in the form of a shell defined by inner walls of the stove and a rearwardly disposed air outlet manifold. Spaced outer auxiliary back and top walls and the corresponding shell walls form therebetween air passages through which ambient air is recirculated into the room over the manifold. The manifold is provided with a plurality of spaced heat conductive metal strips disposed about its periphery. Several manifold embodiments include one or more finned air heating conduits which extend therethrough. A blower fan or pair of blower fans are used to circulate air through the air passages and in heat transfer relationship to the manifold. A valve, damper, and linkage control arrangement regulate the heat output and may be used upon starting of the fire to clear a column of cold air from the flue.

Abstract: A heat dispersing thermal barrier, adapted for installation in close proximity to a free-standing heating device, comprising a vertically disposed, heat resistant room confronting wall panel, adapted to be spaced apart from the room wall by extensions to form a plurality of vertically aligned fluid passages between the extensions, the room confronting panel, and the wall confronting side of the thermal barrier. The fluid passages extend from near the ceiling to near the floor, with one end of the fluid passages in fluid communication with a chamber, wherein a blower is adapted to be in fluid communication with the chamber and the room air, and positioned to draw room air from near the ceiling, downwardly through the fluid passages to exhaust the air into the room near the floor. The blower may be thermostatically controlled. The chamber may be adapted to extend to provide thermal protection to the room floor and/or ceiling in proximity to the free-standing heating device.

Abstract: Protective panels are disclosed for insulating walls and other combustible surfaces from a nearby stove or other heating device. Simple, economical shallow U-shaped pieces, one positioned upon the other, create two distinct conduits through which air flows upwardly. Also, the panels reflect radiant heat back towards the stove or other heat source and away from the area protected. A plurality of these double conduit panel members provide an insulating barrier between the heat source and the combustible surface to cover areas of any desired size.

Abstract: The present invention relates to a stove of the type having a firebox and a second outer wall that defines an air passageway around the fire-box. Provided with the stove is a fan for forcing air around the defined air passageway for collecting heat from a burning fire within the firebox. A flue is communicatively connected with the firebox and extends therefrom through the defined air passageway and on through the outer wall structure of the stove. Co-axially disposed around the flue and communicatively connected with the air passageway is a vent for directing heated air from the stove. The co-axial relationship of the vent and flue assures that the flue gases must pass within the heated air passing in the vent or vice versa, and this gives rise to a very efficient stove inasmuch as a substantial portion of the heat associated with the flue gases being exhausted is transferred to the vented air.

Abstract: A "Steam Powered Stove" which burns any suitable fireplace fuel in a standard stove firebox. Directly above the firebox is a water boiler tank. This tank has tube penetration extending into the firebox for increased steam generation efficiency. Steam pressure is directed to a regulator which can readily be adjusted to the desired pressure by turning a long stem handwheel. Steam pressure strikes the blades of a turbine causing fans to rotate. Cold air is drawn by the fans through a heater box and then into the atmosphere. A removable pulley can be attached for driving other equipment. Water level is maintained by an inherent water fill tank. Used steam is exhausted up the vent pipe.

Abstract: A space heating stove is located near a wall-supported shield which has an internal airflow passage. Heat radiated by the stove to the shield heats air in the airflow passage, and a fan moves this heated air from the channel into a duct system which releases the heated air into the building.

Abstract: A jacketed wood burning stove of the type having an inner firebox door and an outer jacket door in front of the firebox door and wherein a flash inhibitor is provided consisting of a relatively small auxiliary firebox door which is manually biased open but is held closed by an engaging bracket on the outer jacket door when the outer jacket door is closed.

Abstract: A combination heat transfer panel and wall shield for use with stoves and other radiant heaters. The device comprises a case housing two parallel, spaced curtains defining first and second convection chambers. The case is adapted for location either against, or in spaced relation to a structural wall behind a radiant heater. It is formed with a large central opening permitting entrance of radiant energy from the stove, a cold air inlet communicating with the convection chambers either at the lower end of the case or at the sides, and a hot air exhaust communicating with the upper end of the convection chambers. The outermost curtain may be constructed for adjustment between positions in which it absorbs or reflects radiant energy, as desired.

Abstract: A gaseous source of waste energy, including heat, is passed through a gas to liquid heat exchanger and then a chiller to agitate a water bath and produce evaporation of water for cooling. The heated transfer liquid is passed through a heat exchanger to heat makeup air or the like, while, alternatively, chilled water from the chiller is passed through the heat exchanger to cool the makeup air. The source of waste energy, including heat, is normally a grease extraction ventilator mounted to receive fumes and heated air from cooking equipment. Any other source of waste energy is normally suitable, such as heated air which has risen to the upper portion of a large room or enclosure, such as an auditorium, theater, meeting hall or the like. The heated air removed from such a position is adapted in part to be recirculated, but all of it may be used to furnish heat for heating fresh makeup air. Several forms of chiller, including specialized double compartment chillers, are disclosed.

Abstract: A heat extractor for stoves or other type heaters is disclosed. The extractor is mounted in the firebox. The extractor takes air from the room and circulates it through a closed air path in the firebox where it is heated to a high temperature and returned to the room. Air from the extractor is also supplied to the combustion chamber in a controlled manner so that the rate of fuel burning is affected. Alternative methods of supplying and controlling air to the combustion chamber are disclosed.

Abstract: A gaseous source of waste energy, including heat, is passed through a gas to liquid heat exchanger and then a chiller to agitate a water bath and produce evaporation of water for cooling. The heated transfer liquid is passed through a heat exchanger to heat makeup air or the like, while, alternatively, chilled water from the chiller is passed through the heat exchanger to cool the makeup air. Supplemental heating, as by a furnace, or supplemental cooling, as by refrigeration, may be utilized when called for.Separate heat exchangers, as for separate areas, are alternatively supplied with heated transfer liquid or chilled water, or one or more supplied with heated transfer liquid and one or more others supplied with chilled water.The source of waste energy, including heat, is normally fumes and heated air from cooking equipment passed through a grease extraction ventilator.

Abstract: A heating stove for burning woodlike organic material having a fire box for receiving material to be burned substantially centrally therein. The walls of the fire box are sealed to render it substantially air-tight. At least one substantially vertically aligned draft tube depends downwardly from the cover of the fire box into the interior thereof for receiving combustion air at substantially atmospheric conditions from the upper end thereof and directing a flow to impinge upon the hearth adjacent the material to be burned from above and substantially in a vertical direction. Flue means are mounted on the fire box above the material to be burned and in spaced relationship with respect to the draft tube for removing the products of combustion and maintaining the fire box at a pressure below atmospheric pressure.

Abstract: A heat shield for use with freestanding fuel-burning stoves, furnaces, fireplaces and the like, in the form of a modular panel assembly for securance over a wall in spaced relation to said freestanding unit; parallel-spaced, large area, anti-buckling specially-contoured partitions behind the front face of the panel assembly define plural vertical passages layered over the wall for air entering at an intake at the bottom and exiting at an exhaust at the top; louvers at the intake and exhaust align with the respective plural air passages and co-act with the interior partition structure of the invention to produce a sharp thermal gradiant between the front face and any wall protected from a source of heat by the invention, the front face of the panel assembly being hottest, and successive interior partitions and the wall protected being successively cooler as result of convective cooling combined with radiative shielding; special slot and attachment structure further prevents buckling from thermal expansion.

Abstract: Means to remove snow loads from a roof includes a roof structure for a building and treating means within the building. The roof structure is characterized by flexibility and relatively high initial thermal insulation value and comprises a relatively non-yielding roof base, an elastically compressible insulating layer resting thereon, and a very light weight continuous top layer positioned outermost, so that the weight of this top layer will be considerably less than the expectable weight of a heavy snowfall. Snow on the roof compresses the insulation and reduces the thermal insulating value so snow on such roof will rapidly be melted by heat leakage through the roof, yet the previous high thermal insulation will be restored as soon as snow pressure ceases.