Abstract: According to various aspects, exemplary embodiments are disclosed of blow through direct fired heaters including evaporator coils and/or energy recovery ventilation.

Abstract: According to various aspects, exemplary embodiments are disclosed of blow through direct fired heaters including evaporator coils and/or energy recovery ventilation.

Abstract: According to various aspects, exemplary embodiments are disclosed of direct fired heaters including premix burner technology and/or feed forward control loop modulation via inlet air temperature.

Abstract: A gas-fired heater assembly for use in conjunction with a shrink wrap chamber or tunnel, including a gas-fired heater assembly, said gas-fired heater assembly incorporating an air intake, and having a gas port for injection of combustive gas into the heat chamber for combustion, the heated air combustion directed into the length of an associated heat box, said heat box having a designed opening for uniform dissemination of heated air into a hot air envelop, said hot air envelop being operatively associated with an air circulating blower, said air circulating blower directing air through the regions of the heat box for mixing of the circulating air with the heated air, and directing said mixture of heated air out of the hot air envelop and into the shrink wrap chamber or tunnel for shrinking polymer film about packaged goods for shipment and/or storage.

Abstract: According to various aspects, exemplary embodiments are disclosed of direct fired heaters including premix burner technology and/or feed forward control loop modulation via inlet air temperature.

Abstract: A gas heater with specialized controls allows an operator to deploy a single device to heat and to dry when extracting moisture from a structure. The heater has a fan in a blow thru arrangement ahead of a burner. The burner uses either natural gas or liquefied petroleum gas. The heater has air flow, fan motor, temperature, and ignition controls and sensors. The heater delivers high temperature air to the structure that hastens evaporation as the heated air absorbs great concentrations of water vapor. Then the moisture laden heated air exits the building as the heater draws in fresh air, ducts it into a structure, and pressurizes the structure. This moisture laden air then leaks from the building through select windows using the energy imparted from the fan and then exhausts the moisture to the atmosphere, drying the structure.

Abstract: An infra-red heater assembly takes on the conditions that afflict buildings: bed bugs, termites, other insects, molds, bacteria, and the like, and their resulting odors, and other contaminants. The assembly includes a portable electric infra-red emitting panel system with vertically stacked panels that distribute heat energy to the entire height of a wall. Removable panel covers over the infra-red heating elements protect them from damage during transport and when opened, act as deflectors, to direct, the radiant energy, widthwise, to restrict the line of site energy transferred to a wall. The heating panels are regulated by room air and wall temperature sensors to prevent structural damage and fire during usage of the invention. The infra-red heater may be pivotally mounted within its supporting structure so as to direct heat in various angular directions within the building being treated.

Abstract: Exemplary embodiments of the present disclosure include direct fired heaters and methods relating to the operation of direct fired heaters. An exemplary embodiment of a direct fired heater generally includes one or more in-shot burners and one or more combustion tubes configured to receive combustion air emanating from the one or more in-shot burners. The direct fired heater includes a passageway having an inlet configured to receive or intake a circulating air flow. The passageway may include a venturi portion downstream of the inlet in fluid communication with the exit ends of the combustion tubes. The flow of circulating air through the venturi portion may induce flow of combustion air through the one or more combustion tubes.

Abstract: A direct gas-fired industrial air heater low fire start control, includes circuitry for simulating a resistant circuit which bypasses the discharge temperature sensors, the remote temperature selector, and a space temperature controls, that has the effect of driving the modulating valve to a fixed open setting which in turn changes the valve voltage in order to obtain desired gas flow. In a further embodiment, an isolated DC voltage source which normally bypasses the voltage input to the system of the modulating valve can be inserted into the circuitry to effectively drive the modulating valve to a fixed open setting to obtain the desired gas flow rate. Various circuitry, and bypass gas flow arrangements, are further shown to increase the efficiency of ignition of the burner assembly, when started.

Abstract: A gas burner assembly, including its gas intake manifold, in combination with upper and lower tiered baffles, and includes the side chambers for regulation of flow if air through a draw in and through type of burner assembly, to provide heated air for a building. Various slots are provided in both the side chambers, and are custom designed for application to select tiers of the upper and lower baffles, to precisely regulate the flow of air into the combustion chamber, and regulate the type of flame generated, to furnish very precise generation of heat, and BTU output for the various sized burner assemblies.

Abstract: In a direct gas-fire heater assembly having a generally box-like housing with a grate-like floor with a conventional gas regulator, a gas port mounted within a box-like shroud, the shroud having one side with a predetermined number, shape and size of primary combustion air inflow orifices to direct primary combustion air toward the gas port. A burner is mounted on the shroud over the gas port. The area above the burner and adjacent to it contains an ignition device and flame sense rod as well as a pair of opposed and particularly oriented flame shields on each side of the flame orifice. One each of a pair of opposed baffle-type deflectors is arranged on each side and just above the flame shield so as to form a combustion chamber as well as a path for secondary air flow to a downstream chamber. An additional flame deflector is formed on one baffle-type deflector to deflect the flame toward the blower area.

Abstract: Burner assembly for location within an air supply housing for heater the burner assembly having opposite side walls, upper and lower tiered baffles, each having connected thereon an air balancing baffle, the air balancing baffles and tiered baffles forming a combustion chamber therebetween, a gas manifold arranged approximately at the intake end of the burner assembly, with an associated shroud for directing air around the gas manifold, and for selectively diverting and directing air through the air balancing baffles, and into the combustion chamber. A diverter is arranged for directing incoming air, and deflectors are provided at the upper and lower front of the shrouds to direct the passage of air into the path of the combustion gases. Slots are provided within the brackets holding the front of the shrouds to reduced heat generation, and the arrangement of various slots provided within the tiered baffles provided fo reducing hot spots.

Abstract: In a burner assembly for location within an air supply housing for a heater and disposed for inducing the movement of air through a blower and into and around a burner assembly during heater operation to create a supply of heated air for a space to be warmed, the burner assembly being of the type having opposite side walls, and upper and lower tiered baffles, each having connected thereon an air balancing baffle, forming cavities therebetween, with the combination of the air balancing baffles and tiered burner baffles forming a combustion chamber therebetween for reception and combustion of gas delivered from a gas manifold arranged approximately at the intake end of the burner assembly, with a shroud arranged above and below the upper and lower tier baffles for directing air into an intake at the back of the gas manifold, and for selectively diverting and directing air through the air balancing baffles, and through the burner baffles, into the combustion chamber.

Abstract: In a burner assembly for location within an air supply housing for a heater and disposed for inducing the movement of air through a blower and into and around a burner assembly during heater operation to create a supply of heated air for a space to be warmed, the burner assembly being of the type having opposite side walls, and upper and lower tiered baffles forming a combustion chamber for reception and combustion of gas delivered from a gas manifold arranged approximately at the intake end of the burner assembly, a shroud arranged above and below the upper and lower tiered baffles, for directing air into an intake at the back of the gas manifold, and for diverting air through the baffles into the combustion chamber, a diverter arranged at the back end of the gas manifold for directing incoming air between the shroud and the tiered baffles, and a deflector arranged at the upper front of the top of the shroud, to delay the passage of air into the path of the combusting gases, with the sides of the combustion

Abstract: A continuous water wash hood type ventilation system for installation over one or more cookers, wherein exhaust air is drawn into and passed through one or more hoods for scrubbing by a spray of recirculated solution, including a water-detergent combination, with each hood incorporating a canopy formed of a front, back, side and top walls, an exhaust outlet provided through the top wall, an exhaust chamber formed within the canopy by means of a series of arranged baffles, generally comprising an upper, intermediate, and lower baffle, all staggered, to adequately pass the exhaust gases through the canopy to achieve scrubbing and discharge, and for properly channelling the collection of the scrubbing solution within a basin for draining to a supply and recirculation reservoir.

Abstract: In a ventilating hood generally for use in conjunction with a heating apparatus, such as a cooker, a housing incorporates both a diverter and a rear support, the two of which join to segregate the incoming air through a supply conduit from the outgoing air traversing through a support arranged filter and into an exhaust outlet. The front wall of the housing, which is spaced from the lower end of the diverter, incorporates a slightly upwardly inclined deflector, which directs substantially all of the air incoming to the hood upwardly and rearwardly directly towards for movement through the filter, and out of the exhaust outlet, and since the air is generally unencumbered by any structure in the path of its flow, it moves in a rather parallel course with the arranged diverter, and rapidly exits carrying the entrained fumes therewith significantly reducing the BTU requirements for operation of this hood.

Abstract: In a ventilating hood of the type incorporating a supply chamber, an exhaust outlet, one or both of which incorporate air blower or moving means, such as fans, pressure taps are incorporated at strategic locations about the supply and exhaust chambers, generally at the location of their separating partitions, as where the air is diffused as passing through the hood, so that pressure drops can be readily determined, and airflows at these locations may be properly set as determined from previously prepared graphs.

Abstract: In a ventilating hood generally for use in conjunction with a heating apparatus, such as a cooker, a housing incorporates both a diverter and a rear support, the two of which join to segregate the incoming air through a supply conduit from the outgoing air traversing through a support arranged filter and into an exhaust outlet. The front wall of the housing, which is spaced from the lower end of the diverter, incorporates a slightly upwardly inclined deflector, which directs substantially all of the air incoming to the hood upwardly and rearwardly directly towards for movement through the filter, and out of the exhaust outlet, and since the air is generally unencumbered by any structure in the path of its flow, it moves in a rather parallel course with the arranged diverter, and rapidly exits carrying the entrained fumes therewith significantly reducing the BTU requirements for operation of this hood.