Matches 1 - 50 out of 153 1 2 3 4 >
Match Document Document Title
7252502 Method and system for combined standing pilot safety and temperature setting  
The method and apparatus provides a controller (which might comprise a microprocessor) that can control gas flow to a pilot burner in fluid communication with a manual pilot valve and an automatic...
7249573 Pressurized steam boilers and their control  
A method of controlling the operation of a pressurised steam boiler ( 50 ) heated by a burner ( 20 ), which includes the steps of a) monitoring the level of water in the boiler ( 50 ), b)...
7093611 Water feeder controller for boiler  
A water feeder controller for a boiler monitors a low water cutoff sensor in a boiler and uses a feed timer to feed water to the boiler for a predetermined feed period of time. The feed timer...
7053341 Method and apparatus for drum level control for drum-type boilers  
A method for controlling the level of a drum in a drum-type boiler includes adjusting a gain of a drum level PID (such as a Proportional Integral Derivative control) in accordance with a signal...
7007636 Fuel system for premix burner of a direct-fired steam generator  
A direct-fired, propane powered steam generator is provided with a carburetor, which receives vaporized propane from a converter arrangement which converts liquid propane to vapor, receives...
7000847 Quick recovery water heater  
A small water heater with a 29 cm outer diameter and a total height of 60 cm produces five liters of hot water per minute, with a difference of 25° C. between the water inlet and outlet, and an...
6978741 Apparatus and method for measuring total dissolved solids in a steam boiler  
A method and apparatus for controlling the operation of a pressurized steam boiler heated by a burner. The method includes the steps of monitoring the level of total dissolved solids in water...
6938584 Feedwater control system considering pressure drop of feedwater control valve in nuclear power plant and control method therefor  
A feedwater control system considering a pressure drop of feedwater control valve in a nuclear power plant and a control method therefor are provided. In the feedwater control system, a first...
6926028 Water feeder controller for boiler  
A water feeder controller for a boiler monitors a low water cutoff sensor in a boiler and uses a feed timer to feed water to the boiler for a predetermined feed period of time. The feed timer...
6918356 Method and apparatus for optimizing a steam boiler system  
A method for controlling a steam boiler or oil heater for maximum fuel efficiency by systematically finding the most fuel-efficient combination of input control values. A characteristic...
6840198 Air-proportionality type boiler  
An air-proportionality type boiler is provided. Since the air-proportionality type boiler directly controls a current proportionality gas valve according to an amount of air by using a low-price AC...
6694927 Cold water draw bypass valve and variable firing boiler control  
A first sensor provides a demand for heat signal to a condensing boiler or water heater for control of the variable firing rate. A second sensor controls a bypass valve to allow a portion of water...
6598564 Natural gas supply apparatus  
Apparatus for supplying natural gas fuel to heat the boilers of an ocean-going tanker for the transport of liquefied natural gas (LNG) comprises a compressor having an inlet communicating with the...
6553946 Multi-function water heater control device  
A single control device is operational to control the flow of gas to a water heater as well as to protect against excessive temperature and pressure. The control device requires only a single...
6552647 Building environment monitor and control system  
A monitor and control system that responds to alarm signals representing different hazardous conditions in an environment having a number of utility service supply lines, such as a home residence....
6464492 Methods of utilizing boiler blowdown for reducing NOx  
The present invention provides improved methods of reducing NO x emissions in the flue gases produced by a steam boiler fired by a fluid fuel and combustion air burner and including a steam drum...
6409090 Self-optimizing device for controlling a heating system  
A self optimizing device for controlling a heating unit in a manner so as to improve the energy efficiency of the heating unit using an autocalibration processor. The heating unit employs a heating...
RE37745 Control system for a water heater  
A multi-function controller for a water heater is advanced comprising a control panel and a plurality of sensors that monitor a variety of functions that impact the operation of a water heater. A...
6401669 Condensing boiler  
A condensing boiler includes a heat exchanger with a burner adjacent to the top of the heat exchanger. There is an exhaust for condensate adjacent to the bottom of the heat exchanger. There is a...
6390027 Cycle control system for boiler and associated burner  
A cycle control system for use with a boiler having a fluid therein and a method of monitoring a boiler to determine the presence of an adequate level of fluid therein. The cycle control system...
6375087 Method and apparatus for self-programmable temperature and usage control for hot water heaters  
A method and apparatus are provided for self-programmable temperature and usage control for a hot water heater. A plurality of user entered selections are received. Idle periods of a set time...
6289852 Hot water and steam generating method and apparatus  
Method and apparatus for heating water to one of a plurality of predetermined temperatures and for generating steam. A burner with a water jacket receives water from a pump which obtains water from...
6095098 Computer controlled injection device for generating steam  
A steam generation device comprising two cylinders, an inner and an outer cylinder, the inner cylinder forming a combustion chamber into which streams of air, water and fuel are released under...
6055944 Heating device  
A storage water heater including a vessel for accumulating a volume of water which is to be heated, said vessel having water inlet and outlet means, at least one gas burner, an exhaust gas outlet...
6044804 Method and device for monitoring a feedwater supply to a steam generator  
A method for monitoring a feed-water supply to a continuous-flow or once-through steam generator, wherein steam temperature of evaporated feedwater is employed for determining a feedwater supply...
5950573 Power vented water heater with air inlet  
A water heater comprising a water container; a combustion chamber adjacent the water container; a burner associated with the combustion chamber; a flue connected to the combustion chamber; a blower...
5947111 Apparatus for the controlled heating of process fluids  
An apparatus for the controlled heating of a process fluid has a heater, a process fluid vessel containing the process fluid, and a bundle of thermosyphons extending between a burner chamber of the...
5881681 Water heating system  
A water heating device comprising (a) combustion means for igniting a combustible mixture of air and gas for heating water; (b) heat exchanger means for providing heat transfer between the hot...
5739504 Control system for boiler and associated burner  
A control system for use with a boiler and associated burner. In one embodiment, the system comprises a first control circuit for producing a signal having alternating first and second states, the...
5605118 Method and system for reheat temperature control  
A method and system for controlling reheater steam temperature is disclosed. The method can be carried out by selectively adjusting the flow of superheated steam into a superheater positioned...
5575244 Heat recovery boiler with induced circulation  
The invention relates to a boiler (1) wherein at least one steam generating circuit comprises an ejector (25) capable of providing induced circulation of water in the boiler in normal operating...
5529021 Forced once-through steam generator  
A forced once-through steam generator with an evaporator heating surface has a control device for a furnace which is controlled by a setpoint value L assigned to the steam generator power and a...
5400962 System and method for reduced purge operation of a forced draft burner in a water heater  
A system and method for controlling operation of a water heater provides generating a heating demand signal which a minimum level corresponds to a required heat input for maintaining water...
5279263 Cascaded steam temperature control applied to a universal pressure boiler  
The firing rate and the feedwater flow rate of a universal pressure boiler are controlled using a cascaded steam temperature control system. The secondary superheater outlet temperature comprises...
5224445 Boiler water liquid level control  
A liquid level control principally for boiling water boilers sensitive to the presence or absence of liquid at an upper and at a lower control level. The control enables the boiler to be fired when...
5154162 Gas-fired water heater with combustion-aid supply system  
A gas-fired water heater includes an oxygen supply system provided with the water heater system having an oxygen supply synchronizer installed juxtapositionally to the water heater, which is...
5053978 Automatic boiler room equipment monitoring system  
A system for monitoring, processing and storing operating parameters of a boiler room. A sonar gauge for measuring the level of liquid fuel in a storage tank, thermocouples to measure temperatures...
5044326 Flammable waste liquid combustion system and method  
Apparatus is provided for controlling the burning of a volatile waste liquid together with a conventional fuel in a boiler in the form of a free-standing module which contains a flow-control valve...
5027751 Method and apparatus for optimized boiler operation  
Boiler operations are fine tuned to minimize thermodynamic losses and pressure losses across throttle valves at the output of a boiler. Whenever the boiler is operating outside of desired operating...
4935874 Method and apparatus for controlling steam in a pellet mill  
A control for a vapor steam generator as used with a pellet mill senses the exhaust temperature of the steam and controls it by modulating the flow of air/gas to the burner independently of the...
4922861 Multiple-purpose instantaneous gas water heater  
A multiple purpose instantaneous gas water heater comprises a combination of a larger combustion capacity type first burner with a smaller combustion capacity type second burner. Each of the...
4913128 Burner apparatus  
A burner apparatus comprising: a burner plate, a proportional directional valve through which fuel gas flows into said burner plate, a blower which supplies air to said burner plate, a thermal...
4852524 Gas fired water heater  
A novel semi-instantaneous, modulating and condensing gas fired water heating system having a very high dynamic response for supplying potable water on demand at a substantially constant,...
4841918 Boiler control system  
A boiler control system includes a first device for measuring or computing a rate of change in steam temperature and a generated thermal stress in a pressure part of a boiler, and a second device...
4787554 Firing rate control system for a fuel burner  
A boiler control system utilizing a microcomputer, a memory, and a firing rate control scheme provides a boiler with a more responsive control arrangement. This improved response is accomplished by...
4770161 Gas water heaters or bath heaters  
A water heater of the instantaneous gas type without a permanent pilot light includes: a small turbo-alternator through which the water drawn off passes; an arrangement for using the current from...
4768469 Operation control apparatus for recovery boilers  
An apparatus for controlling operation of a recovery boiler for compensating a predetermined reference temperature of black liquor by a compensation value in accordance with a type of an injecting...
4749122 Combustion control system  
In a combustion system, the economic optimum efficiency is achieved by periodically computing a relative index of combustion efficiency using the combustion chamber as a real-time, on-line...
4716858 Automatic firing rate control mode means for a boiler  
An automatic firing rate control mode arrangement is provided as a method of operation within a flame safeguard sequencer. The system uses proportional control squared, an integration which...
4693233 Air preheater system  
An air preheater wherein heated combustion gas is caused to flow in a straight path through the full lengths of preheater tubes while controlling the velocity and temperature of such gas to sweep...
Matches 1 - 50 out of 153 1 2 3 4 >