41 results about "Forced air warming" patented technology

A heat pump system is disclosed that utilizes one or two compressors and multiple heat exchangers to provide forced air heating, radiant heating and/or water heating for an interior space. A controller directs energy to these multiple system outputs to provide maximum comfort, effectively utilize any excess energy, address fluctuations in energy output, prevent unsafe operating conditions and avoid intermittent compressor operation. The system may provide energy for a water heater in both heating and cooling mode, and control operation of the water heater to utilize system energy whenever possible and avoid use of a conventional water heater heating element. Load Management Control is also provided so that the system may be shut down remotely by a utility company.

A mobile heat dispersion system for preventing liquid conduits from freezing in cold environments, such as on frac pads, including a self-contained heating system formed of a forced air heater operatively connected to a fabric heat duct system and a heat entrapment cage enclosing both the liquid conduit to be protected and the fabric heat duct system, and a process for use thereof.

A steam humidifier for use with a forced air heating system includes a steam nozzle mounted in the plenum of the heating system and connected to a water feed line connected to a continuous pressurized water source. The water feed line is made of a thermal conducting material and is coiled about a heating element wherein the heating element and conductive coil are substantially surrounded by an insulation barrier. The water feed line is controlled by a solenoid operated valve that will be activated only when the heater is on and a humidistat detects that humidity is required by the area being serviced by the forced hot air system.

A forced-air heater having a self-contained on-board electric-power supply that allows the forced-air heater to operate without an external electric power source; a fuel tank; a combustion chamber; a support; a housing including upper and lower housing portions; a motorized fan that during operation draws in ambient air through an air intake and forces air into the combustion chamber.

A forced air warming unit has a casing that encloses a scroll housing with a curved inside surface. A blower is disposed in the scroll housing inside the curved surface. Inlet and outlet openings are provided in the casing. A circuit board is mounted in the casing, against the scroll housing so that the blower is enclosed in space between the scroll housing and the circuit board. At least one opening is provided through the circuit board into the space in which the blower is disposed. A tapered, elongate, arcuate heater plate is disposed in the scroll housing between the circuit board and the blower, with a relatively wide end near the outlet opening and a second, relatively narrower end near the curved inside surface. Air is conducted in response to operation of the blower through the inlet opening, along a first side of the circuit board through the one or more openings in the circuit board into the scroll housing. Air is also conducted in response to operation of the blower along a second side of the circuit board which faces the scroll housing, through air passages in the circuit board to and along the first side through the one or more openings, into the scroll housing. Air entering the scroll housing in response to operation of the blower is accelerated by the blower along the curved inside surface while being heated in response to operation of the heater plate. Heated, pressurized air exits the forced air warming unit through the outlet opening. Provision is made for connecting an air hose to the outlet opening for conducting the pressurized, heated air to a pneumatic, convective device.

An air pollution control system includes an emission treatment system configured to receive flue gas, to reduce at least one pollutant therefrom, and to output emission treated flue gas. A first air heater in fluid communication with the emission treatment system includes a heat exchanger for heating forced air introduced thereto above a base temperature and thereby cooling emission treated flue gas from the emission treatment system to a stack discharge temperature. A second air heater in fluid communication with the first air heater to receive heated forced air therefrom includes a heat exchanger for heating forced air introduced thereto to a preheat temperature for combustion in a boiler and thereby cooling flue gas introduced from a boiler to the second air heater to an emission treatment temperature. The second air heater is in fluid communication with the emission treatment system to introduce cooled flue gas thereto.

A filter apparatus for deployment over a duct end in a forced air heating/ ventilating/air conditioning system is described. The apparatus has been specifically designed for easy installation, and also for convenient cleaning and maintenance by occupants of the structure where the apparatus is employed. The apparatus preferably overhangs the duct end, thereby allowing improved filtration efficiency and reduced air pressure drop across the filter apparatus.

A programmable controller circuit that can be connected directly to the fan switch of any thermostat with a forced air heating and/or cooling system that includes a blower fan for circulating air throughout the home. The controller can be installed with minimal modifications to the existing wiring. The present invention increases the efficiency of the cooling system by evaporating condensate and extracting residual coolness from the thermal mass of the evaporator coils. The present invention can be programmed with a single button. A method of adapting additional fan run time based on compressor run time.

A blower urges an airflow, at a rate according to a user-controlled flow rate command, through an electric heater and the electrical heater heats the airflow at a heater power based on a user-input temperature command, the user-input flow rate command, and a measured mass flow rate of the airflow. The heater power is calculated based on the heat energy required to heat air to the given reference temperature, at a flow rate corresponding to the measured mass flow rate. Optionally, the temperature of the air entering the electric heater is measured, and the heater power is calculated based on the heat energy required to heat air from the measured temperature to the given reference temperature, at a flow rate corresponding to the measured mass flow rate.

A heating oven for use in dynamo-electric machine component manufacture is provided. The oven uses forced air heating to raise the temperature of in-process component subassemblies to suitable process temperatures. The heating oven includes a rotating drum mounted in a cabinet. A number of open-ended tubular cradles are disposed in circular arrays between the drum faces. Batches of component subassemblies may be individually loaded into the cradles for heat treatment. Air flow channels are set up in the oven cabinet to evenly distribute heated air through individual cradles. Heated air after passing over the individual in-process subassemblies, exits the cradles through side slots in the cradle walls into the interior of the drum. The exiting air is reheated and recirculated through the heating oven.

An assembly of structural components for supporting an air filtration member is disclosed. The assembly may include an air filtration member and a framework designed to provide support to the filtration member. The framework may include a first structural component forming a lower base of the framework for supporting the filtration member and a second structural component forming an upper base of the framework for supporting the filtration member. The framework may also have an arm that is slidable within and attachable to the framework, and may be configured to provide an adjustment mechanism for the framework, such that the framework and the filtration member can be located within a number of differently sized forced air heating or air conditioning ducts.

A lip rolling apparatus for open-mouthed stacked thermoplastic containers is disclosed. One particular apparatus includes components for presenting a nested stack of containers having unrolled lips to a rim roller, engaging individual cups on a screw assembly, heating a supply of air in a heater to a desired temperature, discharging the supply of heated air toward the containers as they are engaged on the screw assembly, and rolling the lips of the containers in the screw assembly. The present invention may be designed to prevent the screw assembly from operating until the supply of air reaches the desired temperature. Additionally, the heater (e.g., a forced air heater) may be moved between an initial position proximate the nested stack of containers and a safety position in response to a signal. Such a signal may be generated in response to a temperature sensor, system error, or any other such triggering episode.

A portable heater providing both radiant and forced air heat a closed loop heating element positioned within a substantially oval shaped reflector, The reflector air vent allows air to pass in from a bottom of the reflector, over the closed loop heating element and the reflector. A housing surrounds the reflector and heating element. A blower is located at a lower end of the housing and draws air inward and up between the reflector and the heating element from which it emerges past the heating element. Control knobs for controlling a thermostat and output power level are located at the top surface of the housing.