| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 21 | Industrial process control apparatus and method | US367828 | 1982-04-12 | US4489376A | 1984-12-18 | Richard E. Putman |
| The present control system and method for controlling the combustion chamber pressure in a non-linear combustion process is operative in relation to one or more combustion chambers each having a flue gas damper. In the case of a plurality of such chambers, the outlet duct associated with each chamber is connected to a common exhaust stack. This operation is in relation to a desired damper position control characteristic provided by a combination of process signals in a microprocessor computer apparatus. Information in the form of the combustion and pressure levels as supplied in an anticipative feed-forward control manner by a particular combustion chamber is utilized in conjunction with a variable gain characteristic determined by the actual position of the damper operative with that combustion chamber to determine the correct damper position for that chamber. | ||||||
| 22 | Control system for controlling the fuel/air ratio of combustion apparatus | US509833 | 1983-07-01 | US4468192A | 1984-08-28 | Thomas S. Jaeger |
| A control system for an induced or forced draft combustion apparatus has a single pressure transducer for providing an electrical signal indicative of pressures by alternately responding to the fuel pressure to the combustion apparatus and the fuel pressure plus the induced draft lower suction pressure. The signal output of the transducer is connected to a controller for controlling the fuel flow to maintain a predetermined fuel/air ratio for efficient and safe combustion of the fuel in the combustion apparatus. | ||||||
| 23 | Furnace air volume control apparatus | US217225 | 1980-12-17 | US4396369A | 1983-08-02 | Gustav Kaessmann |
| A furnace air volume control apparatus for controlling the volume of furnace air to achieve efficient burning is disclosed. The apparatus includes regulating valves positioned within supply air inlets and exhaust gas outlets of the furnace. A measured data receiver positioned on the exhaust gas side transmits a measuring signal to a control unit connected to the regulating valves. The control unit includes a storage unit for storing valve positions assigned to respective burner loads. By monitoring various exhaust gas parameters with the measured data receiver and control unit valve position, adjustment in response to changes in the burner load is possible by comparing a previously stored valve position recalled from the storage unit with a characteristic curve. The valve adjusting value stored in the storage unit is essentially congruent with the change in burner load. After exhaust gas stabilization has occurred in response to different burner loads precise correction of the valve position value occurs. | ||||||
| 24 | Open draft hood furnace control using induced draft blower and exhaust stack flow rate sensing | US187040 | 1980-09-15 | US4373897A | 1983-02-15 | Ralph H. Torborg |
| Apparatus is provided for modifying an open draft hood furnace and its control system, to produce an induced draft furnace having increased efficiency. A blower located in the furnace exhaust stack is used to induce movement of air and combustion products into and through the draft hood. A flow-limiting orifice located in the exhaust stack upstream from the blower causes a region of reduced pressure to exist downstream from the orifice. A pressure signal representative of the flow rate of exhaust stack gases is sensed on the downstream side of the orifice and is communicated by a conduit to a pressure switch connected to a gas valve, which together control gas to the burner. No gas is permitted to flow to the burner unless a predetermined reduced pressure level is achieved at the downstream side of the orifice. A small opening in the conduit permits a small flow of flushing air to enter the conduit. | ||||||
| 25 | Condition control system for efficient transfer of energy to and from a working fluid | US329147 | 1981-12-10 | US4373663A | 1983-02-15 | Jeffrey M. Hammer |
| A condition control system adapted to supply a working fluid that has been modified by transferring energy to or from the working fluid is disclosed wherein a minimum energy loss is accomplished in operating the control system. The control system adjusts the setpoint of the system in response to parameters measured around the system and further provides for a minimum on/off cycling of the system in the event that the system is applied to a device which alters the working fluid between a fixed lower rate and an upper rate as would be typical in a burner-boiler configuration. | ||||||
| 26 | Automatic flue damper | US29927 | 1979-04-13 | USRE31112E | 1982-12-28 | John Prikkel, III |
| In the present invention, an automatic flue damper located in the vent stack of a household furnace or other apparatus requiring venting is interfaced with a thermostatic control and a fuel supply valve associated with the apparatus so as to maintain a vent passage to the atmosphere normally open during times when combustion is occurring in the apparatus and to close the vent passage at an appropriate time following the termination of combustion in the apparatus. The normally open vent condition is maintained by a damper positioning spring. Vent closure following combustion is accomplished by means of a direct current solenoid. Further included in the interfacing circuitry are a temperature sensing device effective to disable the solenoid, thus opening the vent, upon the appearance of unsafe stack temperatures and a pressure sensor which also disables the solenoid to open the vent stack upon the occurrence of an inappropriate discharge of fuel to the combustion chamber. The pressure sensor then also sounds an alarm to alert those nearby of the unauthorized escape of fuel. | ||||||
| 27 | Method and apparatus for powered flue products exhaust and preheated combustion air supply | US048508 | 1979-06-14 | US4262608A | 1981-04-21 | Bert W. Jackson |
| A combination powered flue products exhaust and preheated combustion air supply assembly is provided for use in association with a heating furnace so that flue exhaust products are given a positive exhaust to the outside while a balanced pre-heated combustion air supply is simultaneously and positively pulled inside. A compartmented main housing is provided having flue products exhaust and combustion air compartments. A flue products exhaust fan is provided in the flue products exhaust compartment and a simultaneously activated and driven combustion air intake fan is provided in the combustion air compartment. An outside air intake pipe is connected to the main housing so as to deliver combustion air to the combustion air compartment for delivery to the furnace area upon selective activation of the combustion air intake fan. A flue products exhaust pipe concentrically positioned within the air intake pipe is provided in association with the flue products exhaust compartment so as to deliver hot flue exhaust products to the outside atmosphere upon selective activation of the flue products exhaust fan. An automatic air pressure controlled air intake damper is provided in the air intake pipe so as to close the air intake pipe when the fans are not running. An automatic air pressure controlled flue products exhaust damper is provided in the flue products exhaust pipe so as to close the flue products exhaust pipe when the fans are not running. | ||||||
| 28 | Furnace control using induced draft blower and exhaust stack flow rate sensing | US57051 | 1979-07-12 | US4251025A | 1981-02-17 | Ulrich Bonne; Lorne W. Nelson; Ralph H. Torborg |
| Apparatus is provided for constructing an induced draft furnace and its control system, to produce an induced draft furnace having increased efficiency. A blower located in the furnace exhaust stack is used to induce movement of air, fuel and combustion products into, through and out of the combustion chamber. A flow-limiting orifice in the exhaust stack in proximity to the blower causes a region of higher pressure to exist upstream from the orifice, with a region of lower pressure downstream from the orifice. A pressure signal representative of the flow rate of exhaust stack gases is sensed on one side of the orifice and is fed back to a modulating gas valve which controls the outlet gas flow from the valve to be proportional to the magnitude of the pressure signal representing exhaust stack flow rate. By selecting blower speeds and flow capacities, various firing rates for the furnace can be selected, from the design maximum of the furnace down to various derated levels. | ||||||
| 29 | Method of and apparatus for controlling combustion | US679100 | 1976-04-22 | US4030874A | 1977-06-21 | Bernard Vollerin |
| A liquid or gaseous (fluid) combustible is mixed with a combustion-sustaining gas and fed under pressure into a chamber where the mixture is burned. The mass flow of the combustible (fuel) is normally maintained constant for a combustion chamber of given thermal power output. The pressure in the chamber is continuously detected and the ratio of the mass flow of recirculated exhaust gas to the mass flow of the oxygen-containing gas (air or oxygen), which together constitute the combustion-sustaining gas, is increased when this pressure increases above a predetermined limit and the ratio is decreased when the pressure decreases below a predetermined limit. The ratio is varied by increasing or decreasing the proportion of exhaust gases and thereby decreasing or increasing, respectively, the partial pressure of oxygen in this combustion-sustaining gas. | ||||||
| 30 | Safety control arrangement | US3768956D | 1972-03-31 | US3768956A | 1973-10-30 | MUELLER R; SINKO V |
| A safety control arrangement which is adapted for use with fuel burning appliances such as natural gas fueled fire place logs or the like, and which is responsive to draft conditions in the venting system, so that fuel flow to the burner will be cut off in the absence of predetermined air flow characteristics. The unit preferably includes a probe or detector placed in the air stream and operatively associated with a pair of switches so as to detect both lack of vacuum induced by normal draft and excessively high vacuum, indicating vent blockage upstream of the vent fan. The switches in the electrical control circuit are arranged so as to keep the fuel valve open only when a predetermined minimum draft is present, and to open the circuit when insufficient or excessive vacuum is present, regardless of the cause or location of vent blockage or restriction. In the preferred form, a parallel vacuum connection is made between the detector and the low threshold and high threshold switches, and a series electrical connection is made between the fuel valve and the normally opened and normally closed electrical switches actuated by vacuum in the vent passage.
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| 31 | Combustion regulator | US3616997D | 1969-05-19 | US3616997A | 1971-11-02 | OLDENBURG JERK GUNNAR |
| A combustion-regulating system for steam boilers including a stem pressure transducer and a steam pressure requirement signal connected to a proportional circuit and integrating circuit, whose output is connected to an input of an amplifier stage which is differentially connected and contained in a first control circuit, whose output is connected with a positioning unit contained in the first control circuit. Said amplifier stage is also connected to an input of a second differentially connected amplifier stage connected in a second control circuit, whose output is connected with a positioning unit contained in the second control circuit. The input of the amplifier stage of the first control circuit is connected to the fuel oil pressure transducer and the input of the amplifier stage of the second control circuit is connected to an air flow sensing device and a fuel oil pressure transducer.
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| 32 | Blast furnace stove control | US3602487D | 1969-11-10 | US3602487A | 1971-08-31 | JOHNSON DONALD W |
| A system for controlling the operation of a blast furnace stove during its on-gas period, including means for controlling the enrichment of the combustion fuel used to heat the stove. Control is effected primarily by comparing a measured stove dome temperature to a stove heating-up or firing schedule, represented by the output of a function generator programmed according to a desired stove temperature-time relationship, and referencing differences in the temperatures to a natural gas flow control loop which controls the richness of the fuel mixture and thereby increases or decreases the heat input to the stove, as required.
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| 33 | Digital control process and system | US61151956 | 1956-09-24 | US3284615A | 1966-11-08 | YETTER EDWARD W |
| 34 | Method of firing with fluid fuels | US32775263 | 1963-12-03 | US3241597A | 1966-03-22 | VIKTOR JUZI |
| 35 | Fluid fuel flow control system for forced draft heating units | US6241860 | 1960-10-13 | US3042769A | 1962-07-03 | CAMPBELL NED G |
| 36 | Combustion control | US41078841 | 1941-09-13 | US2332580A | 1943-10-26 | KLINKER JOHN J |
| 37 | Combustion control in steam-boiler furnaces | US13967226 | 1926-10-05 | US1695431A | 1928-12-18 | LINLEY FRED H |
| 38 | Method and apparatus for controlling combustion in a furnace | US15104996 | 2014-12-17 | US20160320058A1 | 2016-11-03 | Jukka Kortela |
| This paper presents a model predictive control (MPC) strategy for BioGrate boiler, compensating the main disturbances caused by variations in fuel quality such as the moisture content of fuel, and variations in fuel flow. The MPC utilizes models, the fuel moisture soft-sensor to estimate water evaporation, and the fuel flow calculations to estimate the thermal decomposition of dry fuel, to handle these variations, the inherent large time constants, and long time delays of the boiler. The MPC strategy is compared with the method currently used in the BioPower 5 CHP plant. Finally, the results are presented, analyzed and discussed. | ||||||
| 39 | Biomass Fuel Furnance System And Related Methods | US14167126 | 2014-01-29 | US20140144385A1 | 2014-05-29 | Jimmie C. Raley; Jeremy S. Lord; Timothy A. Mann; Gerald D. Stimson; Anthony B. Tranquill; Charles E. Wood; Donald W. Cox |
| A furnace system for heating a poultry brooder house includes a firebox for burning biomass fuel, and a grate within the firebox for burning the biomass fuel thereon. A distributor assembly may positioned within the firebox and is located directly above the grate. The distributor assembly includes a distributor plate having a plurality of apertures therethrough, and a distributor arm above the distributor plate that is movable relative to the distributor plate to cause biomass fuel supported on the plate to pass through the apertures and fall onto the grate. The furnace system may include a hopper assembly that defines a well for receiving a volume of biomass fuel for delivery to the grate or to the distributor plate. | ||||||
| 40 | Biomass fuel furnace system and related methods | US12541628 | 2009-08-14 | US08640633B2 | 2014-02-04 | Jimmie C. Raley; Jeremy S. Lord; Timothy A. Mann; Gerald D. Stimson; Anthony B. Tranquill; Charles E. Wood; Donald W. Cox |
| A furnace system for heating a poultry brooder house includes a firebox for burning biomass fuel, and a grate within the firebox for burning the biomass fuel thereon. A distributor assembly may positioned within the firebox and is located directly above the grate. The distributor assembly includes a distributor plate having a plurality of apertures therethrough, and a distributor arm above the distributor plate that is movable relative to the distributor plate to cause biomass fuel supported on the plate to pass through the apertures and fall onto the grate. The furnace system may include a hopper assembly that defines a well for receiving a volume of biomass fuel for delivery to the grate or to the distributor plate. | ||||||
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