A combination boiler provides heated water to a boiler loop and domestic hot water (DHW) to a domestic water loop. The combination boiler includes a primary heat exchanger (PHE) connected to the boiler loop and a burner to provide heat to the primary heat exchanger. A secondary heat exchanger (SHE) transfers heat energy from the boiler loop to the domestic water loop. A controller monitors a PHE inlet temperature and a DHW output temperature, obtains a pre-heat initialization temperature threshold and a pre-heat cancellation temperature threshold, and detects a low temperature condition. A pre-heat operation is initiated responsive to the low temperature condition by circulating heated water from the PHE to the SHE. The burner is selectively fired at least in part according to an outlet temperature of the PHE.
09 - Appareils et instruments scientifiques et électriques
11 - Appareils de contrôle de l'environnement
Produits et services
(1) Heating boilers; adaptive combustion system for heating boilers that automatically adapts to changing environmental conditions to provide optimal thermal efficiency, said system comprised of controls, sensors, valves, fans, and actuators all sold as a unit.
In a gas hot water heater, changes of the signal output of an A/F sensor are calibrated in the atmosphere, in which the A/F sensor detects an oxygen concentration in a combustion tube. The gas supplied via a gas supply pipe is injected, together with in-taken air, into a combustion tube, which is incorporated in a hot water supply tank, via an injection unit. A proportional valve controls a combustion state in the combustion tube based on the detected oxygen concentration to thereby heat water supplied in the hot water supply tank. A purging process is performed to supply air into the combustion tube, at a timing between an extinguishment operation first performed after the ignition the gas mixture in the combustion tube and a re-ignition operation. Changes of signal output characteristics of the A/F sensor are subject to the calibration after the purging process.
A combination boiler provides heated water to a boiler loop and heated domestic hot water (DHW) to a DHW loop. A primary heat exchanger is connected to the boiler loop. A burner provides heat to the primary heat exchanger and an input fan supplies a fuel and air mixture to the burner. A secondary heat exchanger transfers heat energy from the boiler loop to a domestic water loop. A controller determines a boiler loop flow rate. The controller measures an input temperature of the boiler loop, an output temperature of the boiler loop, and a DHW output temperature of the domestic water loop. The controller determines a DHW input temperature and estimates a DHW flow rate. The input fan speed is initiated or operated according to a required heat output of the burner corresponding to the DHW flow rate.
F24H 9/20 - Disposition ou montage des dispositifs de commande ou de sécurité
F24D 3/08 - Systèmes de chauffage central à eau chaude combinés avec des systèmes de fourniture domestique d'eau chaude
F24H 15/414 - Commande des appareils de chauffage de fluides caractérisée par le type des unités de commande utilisant un traitement électronique, p. ex. par ordinateur
(1) Heating boilers and components parts thereof; controls and oxygen sensors sold as integral components of heating boilers; system comprised of controls, sensors, and gas train components used to measure and maintain optimum air-to-fuel ratio in a combustion system, sold as an integral component of heating boilers
Heating boilers and components thereof; controls and oxygen sensors sold as integral components of heating boilers; system comprised of controls, sensors, and gas train components used to measure and maintain optimum air-to-fuel ratio in a combustion system, sold as an integral component of heating boilers
Heating boilers and components thereof; controls and oxygen sensors sold as integral components of heating boilers; system comprised of controls, sensors, and gas train components used to measure and maintain optimum air-to-fuel ratio in a combustion system, sold as an integral component of heating boilers
A fluid heating system including a fluid supply subsystem having a fluid heating device, a fluid output subsystem, and an intermediary fluid device. The fluid heating system also includes a control device for the fluid supply subsystem, a first temperature sensor, a second temperature sensor, and a control circuit coupled to the control device. The control device is configured to control one selected from a group consisting of the fluid heating device and an amount of water input to the intermediary fluid device. The first and second temperature sensors are configured to output first and second temperature signals, respectively. The control circuit is configured to generate a first control signal based on the second temperature signal, determine a multiplier, generate a second control signal based on the first temperature signal, and send a main control signal to the control device based on the first and second control signals.
A control system is provided for a modulated heating system including a plurality of modulating water heaters, which may be modulating boilers. A deadband control scheme provides for reduced cycling of the modulating heater when total system heat demand falls between the maximum output of one heater and the sum of the maximum output of that one point and the minimum firing point of the next subsequent heater. Condensation of flue gas products is prevented by monitoring flue exhaust temperature for each heater and controlling the modulation of each heater to maintain a minimum heater output sufficiently high to prevent condensation of flue gas products from that heater. Rapid reaction to changes in system heat demand is provided by sensing changes in flow rate in a primary loop of the system and anticipating resulting changes in temperature thus allowing for change in heater output prior to the time the change in flow rate has fully impacted system temperature.
A combination boiler provides heated water to a boiler loop and heated domestic hot water (DHW) to a DHW loop. A primary heat exchanger is connected to the boiler loop. A burner provides heat to the primary heat exchanger and an input fan supplies a fuel and air mixture to the burner. A secondary heat exchanger transfers heat energy from the boiler loop to a domestic water loop. A controller determines a boiler loop flow rate. The controller measures an input temperature of the boiler loop, an output temperature of the boiler loop, and a DHW output temperature of the domestic water loop. The controller determines a DHW input temperature and estimates a DHW flow rate. The input fan speed is initiated or operated according to a required heat output of the burner corresponding to the DHW flow rate
A combination boiler provides heated water to a boiler loop and domestic hot water (DHW) to a domestic water loop. The combination boiler includes a primary heat exchanger (PHE) connected to the boiler loop and a burner to provide heat to the primary heat exchanger. A secondary heat exchanger (SHE) transfers heat energy from the boiler loop to the domestic water loop. A controller monitors a PHE inlet temperature and a DHW output temperature, obtains a pre-heat initialization temperature threshold and a pre-heat cancellation temperature threshold, and detects a low temperature condition. A pre-heat operation is initiated responsive to the low temperature condition by circulating heated water from the PHE to the SHE. The burner is selectively fired at least in part according to an outlet temperature of the PHE.
F23N 5/02 - Systèmes de commande de la combustion utilisant des dispositifs sensibles aux variations thermiques ou à la dilatation thermique d'un agent
F23N 5/20 - Systèmes de commande de la combustion à programme de temps commandé électriquement, p. ex. au moyen de relais à retards
F24D 19/10 - Aménagements ou montage des dispositifs de commande ou de sécurité
33.
METHODS AND SYSTEM FOR DEMAND-BASED CONTROL OF A COMBINATION BOILER
A combination boiler provides heated water to a boiler loop and heated domestic hot water (DHW) to a DHW loop. A primary heat exchanger is connected to the boiler loop. A burner provides heat to the primary heat exchanger and an input fan supplies a fuel and air mixture to the burner. A secondary heat exchanger transfers heat energy from the boiler loop to a domestic water loop. A controller determines a boiler loop flow rate. The controller measures an input temperature of the boiler loop, an output temperature of the boiler loop, and a DHW output temperature of the domestic water loop. The controller determines a DHW input temperature and estimates a DHW flow rate. The input fan speed is initiated or operated according to a required heat output of the burner corresponding to the DHW flow rate
A combination boiler provides heated water to a boiler loop and domestic hot water (DHW) to a domestic water loop. The combination boiler includes a primary heat exchanger (PHE) connected to the boiler loop and a burner to provide heat to the primary heat exchanger. A secondary heat exchanger (SHE) transfers heat energy from the boiler loop to the domestic water loop. A controller monitors a PHE inlet temperature and a DHW output temperature, obtains a pre-heat initialization temperature threshold and a pre-heat cancellation temperature threshold, and detects a low temperature condition. A pre-heat operation is initiated responsive to the low temperature condition by circulating heated water from the PHE to the SHE. The burner is selectively fired at least in part according to an outlet temperature of the PHE.
F24H 9/20 - Disposition ou montage des dispositifs de commande ou de sécurité
F23N 5/02 - Systèmes de commande de la combustion utilisant des dispositifs sensibles aux variations thermiques ou à la dilatation thermique d'un agent
F23N 5/20 - Systèmes de commande de la combustion à programme de temps commandé électriquement, p. ex. au moyen de relais à retards
F24D 19/10 - Aménagements ou montage des dispositifs de commande ou de sécurité
35.
BOILER INTEGRATED CONTROL WITH NON-LINEAR OUTDOOR RESET METHODOLOGY
A boiler assembly includes a user interface which receives user-defined water temperature set point corresponding to a minimum outdoor temperature, and an integrated controller generates a nonlinear outdoor reset curve between the user-defined set point and a second set point corresponding to maximum outdoor temperature for which heating is required, and regulates the boiler to heat water to a temperature corresponding to a set point along the nonlinear output reset curve and based on a detected outdoor temperature. The nonlinear outdoor reset curve may be generated based on aggregated heat output functions for various types of heat emitters. A linear outdoor reset curve may be generated between a maximum water temperature set point and the user-defined set point, having a slope equal to an instantaneous slope of the nonlinear outdoor reset curve at the user-defined set point.
A boiler assembly includes a user interface which receives user-defined water temperature set point corresponding to a minimum outdoor temperature, and an integrated controller generates a nonlinear outdoor reset curve between the user-defined set point and a second set point corresponding to maximum outdoor temperature for which heating is required, and regulates the boiler to heat water to a temperature corresponding to a set point along the nonlinear output reset curve and based on a detected outdoor temperature. The nonlinear outdoor reset curve may be generated based on aggregated heat output functions for various types of heat emitters. A linear outdoor reset curve may be generated between a maximum water temperature set point and the user-defined set point, having a slope equal to an instantaneous slope of the nonlinear outdoor reset curve at the user-defined set point.
A combination boiler provides heated water to a boiler loop and heated domestic hot water (DHW) to a DHW loop. A primary heat exchanger is connected to the boiler loop. A burner provides heat to the primary heat exchanger and an input fan supplies a fuel and air mixture to the burner. A secondary heat exchanger transfers heat energy from the boiler loop to a domestic water loop. A controller determines a boiler loop flow rate. The controller measures an input temperature of the boiler loop, an output temperature of the boiler loop, and a DHW output temperature of the domestic water loop. The controller determines a DHW input temperature and estimates a DHW flow rate. The input fan speed is initiated or operated according to a required heat output of the burner corresponding to the DHW flow rate.
A combination boiler provides heated water to a boiler loop and domestic hot water (DHW) to a domestic water loop. The combination boiler includes a primary heat exchanger (PHE) connected to the boiler loop and a burner to provide heat to the primary heat exchanger. A secondary heat exchanger (SHE) transfers heat energy from the boiler loop to the domestic water loop. A controller monitors a PHE inlet temperature and a DHW output temperature, obtains a pre-heat initialization temperature threshold and a pre-heat cancellation temperature threshold, and detects a low temperature condition. A pre-heat operation is initiated responsive to the low temperature condition by circulating heated water from the PHE to the SHE. The burner is selectively fired at least in part according to an outlet temperature of the PHE.
A hydronic water heating system heats water for various types of heat emitters. A boiler assembly includes a user interface which receives user-defined water temperature set point corresponding to a minimum outdoor temperature, and an integrated controller generates a nonlinear outdoor reset curve between the user-defined set point and a second set point corresponding to maximum outdoor temperature for which heating is required, and regulates the boiler to heat water to a temperature corresponding to a set point along the nonlinear output reset curve and based on a detected outdoor temperature. The nonlinear outdoor reset curve may be generated based on aggregated heat output functions for various types of heat emitters. A linear outdoor reset curve may be generated between a maximum water temperature set point and the user-defined set point, having a slope equal to an instantaneous slope of the nonlinear outdoor reset curve at the user-defined set point.
A fluid heating system including a fluid supply subsystem having a fluid heating device, a fluid output subsystem, and an intermediary fluid device. The fluid heating system also includes a control device for the fluid supply subsystem, a first temperature sensor, a second temperature sensor, and a control circuit coupled to the control device. The control device is configured to control one selected from a group consisting of the fluid heating device and an amount of water input to the intermediary fluid device. The first and second temperature sensors are configured to output first and second temperature signals, respectively. The control circuit is configured to generate a first control signal based on the second temperature signal, determine a multiplier, generate a second control signal based on the first temperature signal, and send a main control signal to the control device based on the first and second control signals.
F24H 9/20 - Disposition ou montage des dispositifs de commande ou de sécurité
F24D 19/10 - Aménagements ou montage des dispositifs de commande ou de sécurité
F24H 1/10 - Chauffe-eau instantanés, c.-à-d. dans lesquels il n'y a production de chaleur que lorsque l'eau s'écoule, p. ex. avec contact direct de l'eau avec l'agent chauffant
A modulating burner apparatus includes a burner and a blower placed upstream of the burner. A venturi is placed upstream of the blower. A damper valve is placed upstream of the venturi. The damper valve has an open position and a restricted position. A smaller gas valve and a larger gas valve are communicated with the venturi. A controller is operably associated with the system to select a position of the damper valve and to select the appropriate one of the gas valves so as to provide a low output operation mode and a high output operation mode, which in combination provide an overall turndown ratio of at least 25:1.
F23D 14/00 - Brûleurs pour la combustion d'un gaz, p. ex. d'un gaz stocké sous pression à l'état liquide
F23D 14/04 - Brûleurs à gaz avec prémélangeurs, c.-à-d. dans lesquels le combustible gazeux est mélangé à l'air de combustion en amont de la zone de combustion du type à induction, p. ex. becs Bunsen
F24H 1/00 - Appareils de chauffage de l’eau, p. ex. chauffe-eau, chauffe-eau instantanés en continu ou chauffe-eau à accumulation
F23L 13/04 - Structure des soupapes ou registres de commande de l'alimentation en air ou du tirage pivotant autour d'un axe unique, mais n'ayant pas d'autre mouvement cet axe étant perpendiculaire au plan de l'appareil
F23N 1/02 - Régulation de l'alimentation en combustible conjointement au réglage de l'amenée d'air
F23C 3/00 - Appareils à combustion caractérisés par la forme de la chambre de combustion
F23D 14/60 - Dispositifs pour le réglage simultané du gaz et de l'air de combustion
F23C 9/00 - Appareils à combustion caractérisés par des dispositions pour renvoyer les produits de combustion ou les gaz de fumée dans la chambre de combustion
A water heater apparatus includes an elongated radial burner extending along a longitudinal central axis of the apparatus. First and second concentric rows of longitudinally extending fin tubes around the radial burner. The fin tubes may have multiple wiped circumferentially laterally portions allowing close packing of the fin tubes for improved efficiency and reduced footprint.
F28D 1/053 - Appareils échangeurs de chaleur comportant des ensembles de canalisations fixes pour une seule des sources de potentiel calorifique, les deux sources étant en contact chacune avec un côté de la paroi de la canalisation, dans lesquels l'autre source de potentiel calorifique est une grande masse de fluide, p. ex. radiateurs domestiques ou de moteur de voiture avec des canalisations d'échange de chaleur immergées dans la masse du fluide avec canalisations tubulaires les canalisations étant rectilignes
F28D 21/00 - Appareils échangeurs de chaleur non couverts par l'un des groupes
F28F 1/20 - Éléments tubulaires ou leurs ensembles avec moyens pour augmenter la surface de transfert de chaleur, p. ex. avec des ailettes, avec des saillies, avec des évidements ces moyens étant uniquement à l'extérieur de l'élément tubulaire et s'étendant longitudinalement les moyens pouvant se fixer à l'élément
F28F 13/06 - Dispositions pour modifier le transfert de chaleur, p. ex. accroissement, diminution en affectant le mode d'écoulement des sources de potentiel calorifique
A water heater apparatus includes an elongated radial burner extending along a longitudinal central axis of the apparatus. First and second concentric rows of longitudinally extending fin tubes around the radial burner. The fin tubes may have multiple wiped circumferentially laterally portions allowing close packing of the fin tubes for improved efficiency and reduced footprint.
F28D 1/053 - Appareils échangeurs de chaleur comportant des ensembles de canalisations fixes pour une seule des sources de potentiel calorifique, les deux sources étant en contact chacune avec un côté de la paroi de la canalisation, dans lesquels l'autre source de potentiel calorifique est une grande masse de fluide, p. ex. radiateurs domestiques ou de moteur de voiture avec des canalisations d'échange de chaleur immergées dans la masse du fluide avec canalisations tubulaires les canalisations étant rectilignes
F28F 1/20 - Éléments tubulaires ou leurs ensembles avec moyens pour augmenter la surface de transfert de chaleur, p. ex. avec des ailettes, avec des saillies, avec des évidements ces moyens étant uniquement à l'extérieur de l'élément tubulaire et s'étendant longitudinalement les moyens pouvant se fixer à l'élément
F28F 13/06 - Dispositions pour modifier le transfert de chaleur, p. ex. accroissement, diminution en affectant le mode d'écoulement des sources de potentiel calorifique
F24H 1/40 - Appareils de chauffage de l'eau autres qu'instantanés ou à accumulation, p. ex. chauffe-eau pour chauffage central avec un ou plusieurs tubes d'eau
F28D 21/00 - Appareils échangeurs de chaleur non couverts par l'un des groupes
A water heater apparatus includes an elongated radial burner extending along a longitudinal central axis of the apparatus. First and second concentric rows of longitudinally extending fin tubes around the radial burner. The fin tubes may have multiple wiped circumferentially laterally portions allowing close packing of the fin tubes for improved efficiency and reduced footprint.
F24H 1/40 - Appareils de chauffage de l'eau autres qu'instantanés ou à accumulation, p. ex. chauffe-eau pour chauffage central avec un ou plusieurs tubes d'eau
F24H 1/14 - Chauffe-eau instantanés, c.-à-d. dans lesquels il n'y a production de chaleur que lorsque l'eau s'écoule, p. ex. avec contact direct de l'eau avec l'agent chauffant dans lesquels l'eau est maintenue séparée de l'agent chauffant par tubes, p. ex. en forme de serpentins
F28D 7/16 - Appareils échangeurs de chaleur comportant des ensembles de canalisations tubulaires fixes pour les deux sources de potentiel calorifique, ces sources étant en contact chacune avec un côté de la paroi d'une canalisation les canalisations étant espacées parallèlement
F28F 1/24 - Éléments tubulaires ou leurs ensembles avec moyens pour augmenter la surface de transfert de chaleur, p. ex. avec des ailettes, avec des saillies, avec des évidements ces moyens étant uniquement à l'extérieur de l'élément tubulaire et s'étendant transversalement
A pre-mix burner apparatus includes a burner having a generally cylindrical burner surface, the burner having a generally circular burner inlet at one end of the burner, the burner inlet having an inlet diameter. A flow distribution member is arranged to distribute flow of fuel and air mixture into the burner. The flow distribution member includes a closed axially central portion configured to block flow of fuel and air mixture axially centrally into the burner. The flow distribution member includes a plurality of vanes extending radially outward from the closed axially central portion. The vanes are configured to generate a swirling flow of fuel and air mixture flowing past the vanes into the burner.
F23D 14/02 - Brûleurs à gaz avec prémélangeurs, c.-à-d. dans lesquels le combustible gazeux est mélangé à l'air de combustion en amont de la zone de combustion
F23D 14/70 - Chicanes ou dispositifs analogues pour créer des turbulences
A pre-mix burner apparatus includes a burner having a generally cylindrical burner surface, the burner having a generally circular burner inlet at one end of the burner, the burner inlet having an inlet diameter. A flow distribution member is arranged to distribute flow of fuel and air mixture into the burner. The flow distribution member includes a closed axially central portion configured to block flow of fuel and air mixture axially centrally into the burner. The flow distribution member includes a plurality of vanes extending radially outward from the closed axially central portion. The vanes are configured to generate a swirling flow of fuel and air mixture flowing past the vanes into the burner.
F24H 1/14 - Chauffe-eau instantanés, c.-à-d. dans lesquels il n'y a production de chaleur que lorsque l'eau s'écoule, p. ex. avec contact direct de l'eau avec l'agent chauffant dans lesquels l'eau est maintenue séparée de l'agent chauffant par tubes, p. ex. en forme de serpentins
F23D 14/02 - Brûleurs à gaz avec prémélangeurs, c.-à-d. dans lesquels le combustible gazeux est mélangé à l'air de combustion en amont de la zone de combustion
F23D 14/36 - Brûleurs spécialement conçus pour être utilisés avec des moyens comprimant le combustible gazeux ou l'air de combustion dans lesquels le compresseur et le brûleur forment une unité
F23D 14/70 - Chicanes ou dispositifs analogues pour créer des turbulences
F23D 14/10 - Brûleurs à gaz avec prémélangeurs, c.-à-d. dans lesquels le combustible gazeux est mélangé à l'air de combustion en amont de la zone de combustion du type à induction, p. ex. becs Bunsen avec la tête de brûleur tubulaire allongée
A pre-mix burner apparatus includes a burner having a generally cylindrical burner surface, the burner having a generally circular burner inlet at one end of the burner, the burner inlet having an inlet diameter. A flow distribution member is arranged to distribute flow of fuel and air mixture into the burner. The flow distribution member includes a closed axially central portion configured to block flow of fuel and air mixture axially centrally into the burner. The flow distribution member includes a plurality of vanes extending radially outward from the closed axially central portion. The vanes are configured to generate a swirling flow of fuel and air mixture flowing past the vanes into the burner.
A modulating burner apparatus (10) includes a burner (42) and a blower (52) placed upstream of the burner. A venturi (56) is placed upstream of the blower. A damper valve (58) is placed upstream of the venturi. The damper valve has an open position and a restricted position. A smaller gas valve (60) and a larger gas valve (62) are communicated with the venturi. A controller is operably associated with the system to select a position of the damper valve and to select the appropriate one of the gas valves so as to provide a low output operation mode and a high output operation mode, which in combination provide an overall turndown ratio of at least 25:1.
F23C 3/00 - Appareils à combustion caractérisés par la forme de la chambre de combustion
F23D 14/34 - Brûleurs spécialement conçus pour être utilisés avec des moyens comprimant le combustible gazeux ou l'air de combustion
F23N 1/02 - Régulation de l'alimentation en combustible conjointement au réglage de l'amenée d'air
F23L 13/04 - Structure des soupapes ou registres de commande de l'alimentation en air ou du tirage pivotant autour d'un axe unique, mais n'ayant pas d'autre mouvement cet axe étant perpendiculaire au plan de l'appareil
F23D 14/60 - Dispositifs pour le réglage simultané du gaz et de l'air de combustion
A modulating burner apparatus (10) includes a burner (42) and a blower (52) placed upstream of the burner. A venturi (56) is placed upstream of the blower. A damper valve (58) is placed upstream of the venturi. The damper valve has an open position and a restricted position. A smaller gas valve (60) and a larger gas valve (62) are communicated with the venturi. A controller is operably associated with the system to select a position of the damper valve and to select the appropriate one of the gas valves so as to provide a low output operation mode and a high output operation mode, which in combination provide an overall turndown ratio of at least 25:1.
F23D 14/60 - Dispositifs pour le réglage simultané du gaz et de l'air de combustion
F23C 3/00 - Appareils à combustion caractérisés par la forme de la chambre de combustion
F23D 14/34 - Brûleurs spécialement conçus pour être utilisés avec des moyens comprimant le combustible gazeux ou l'air de combustion
F23L 13/04 - Structure des soupapes ou registres de commande de l'alimentation en air ou du tirage pivotant autour d'un axe unique, mais n'ayant pas d'autre mouvement cet axe étant perpendiculaire au plan de l'appareil
F23N 1/02 - Régulation de l'alimentation en combustible conjointement au réglage de l'amenée d'air
It is desirable for modulating burners to provide modulation of heat input over a wide range of heat demands. In particular, modulating burners with a high turndown ratio with reduced mechanical complexity and reduced cost are desired. A modulating burner apparatus includes a burner and a blower placed upstream of the burner. A venturi is placed upstream of the blower. A damper valve is placed upstream of the venturi. The damper valve has an open position and a restricted position. A smaller gas valve and a larger gas valve are communicated with the venturi. A controller is operably associated with the system to select a position of the damper valve and to select the appropriate one of the gas valves so as to provide a low output operation mode and a high output operation mode, which in combination provide an overall turndown ratio of at least 25:1.
F23D 14/60 - Dispositifs pour le réglage simultané du gaz et de l'air de combustion
F23D 14/34 - Brûleurs spécialement conçus pour être utilisés avec des moyens comprimant le combustible gazeux ou l'air de combustion
F23L 13/04 - Structure des soupapes ou registres de commande de l'alimentation en air ou du tirage pivotant autour d'un axe unique, mais n'ayant pas d'autre mouvement cet axe étant perpendiculaire au plan de l'appareil
F23N 1/02 - Régulation de l'alimentation en combustible conjointement au réglage de l'amenée d'air
A modulating burner apparatus includes a burner and a blower placed upstream of the burner. A venturi is placed upstream of the blower. A damper valve is placed upstream of the venturi. The damper valve has an open position and a restricted position. A smaller gas valve and a larger gas valve are communicated with the venturi. A controller is operably associated with the system to select a position of the damper valve and to select the appropriate one of the gas valves so as to provide a low output operation mode and a high output operation mode, which in combination provide an overall turndown ratio of at least 25:1.
F23D 14/04 - Brûleurs à gaz avec prémélangeurs, c.-à-d. dans lesquels le combustible gazeux est mélangé à l'air de combustion en amont de la zone de combustion du type à induction, p. ex. becs Bunsen
F23C 9/00 - Appareils à combustion caractérisés par des dispositions pour renvoyer les produits de combustion ou les gaz de fumée dans la chambre de combustion
F24H 1/00 - Appareils de chauffage de l’eau, p. ex. chauffe-eau, chauffe-eau instantanés en continu ou chauffe-eau à accumulation
F23L 13/04 - Structure des soupapes ou registres de commande de l'alimentation en air ou du tirage pivotant autour d'un axe unique, mais n'ayant pas d'autre mouvement cet axe étant perpendiculaire au plan de l'appareil
F23N 1/02 - Régulation de l'alimentation en combustible conjointement au réglage de l'amenée d'air
F23C 3/00 - Appareils à combustion caractérisés par la forme de la chambre de combustion
F23D 14/60 - Dispositifs pour le réglage simultané du gaz et de l'air de combustion
A control system is provided for a modulated heating system including a plurality of modulating water heaters, which may be modulating boilers. A deadband control scheme provides for reduced cycling of the modulating heater when total system heat demand falls between the maximum output of one heater and the sum of the maximum output of that one point and the minimum firing point of the next subsequent heater. Condensation of flue gas products is prevented by monitoring flue exhaust temperature for each heater and controlling the modulation of each heater to maintain a minimum heater output sufficiently high to prevent condensation of flue gas products from that heater. Rapid reaction to changes in system heat demand is provided by sensing changes in flow rate in a primary loop of the system and anticipating resulting changes in temperature thus allowing for change in heater output prior to the time the change in flow rate has fully impacted system temperature.
A dual chamber burner assembly provides a header, a first burner chamber adjacent the header, and a second burner chamber on an opposite side of the first burner chamber from the header. The second burner chamber is provided with a flame sensor portion extending back through the first burner chamber toward the header so that first and second flame sensors may be utilized to detect flame in the first and second chambers, respectively.
F24H 1/28 - Appareils de chauffage de l'eau autres qu'instantanés ou à accumulation, p. ex. chauffe-eau pour chauffage central avec une chemise d'eau entourant la ou les chambres de combustion la chemise d'eau étant monobloc renfermant un ou plusieurs tubes foyers ou de fumées
F23N 1/02 - Régulation de l'alimentation en combustible conjointement au réglage de l'amenée d'air
F22B 5/00 - Chaudières à vapeur du type à bouilleurs, c.-à-d. sans foyer intérieur ou tubes de fumées, le corps de la chaudière ayant des contacts externes avec le courant de fumée
F23D 14/02 - Brûleurs à gaz avec prémélangeurs, c.-à-d. dans lesquels le combustible gazeux est mélangé à l'air de combustion en amont de la zone de combustion
F22B 5/02 - Chaudières à vapeur du type à bouilleurs, c.-à-d. sans foyer intérieur ou tubes de fumées, le corps de la chaudière ayant des contacts externes avec le courant de fumée avec tubes d'eau auxiliaires extérieurs au corps de la chaudière
F22D 5/00 - Commande de l'alimentation en eau ou du niveau d'eauAlimentation automatique en eau ou régulateurs automatiques du niveau d'eau
F23D 14/08 - Brûleurs à gaz avec prémélangeurs, c.-à-d. dans lesquels le combustible gazeux est mélangé à l'air de combustion en amont de la zone de combustion du type à induction, p. ex. becs Bunsen avec les orifices de sortie disposés axialement dans la tête de brûleur
F23L 9/00 - Passages ou ouvertures pour introduire l'air secondaire nécessaire à la combustion complète du combustible
F23N 3/00 - Régulation de l'amenée d'air ou du tirage
F24H 1/10 - Chauffe-eau instantanés, c.-à-d. dans lesquels il n'y a production de chaleur que lorsque l'eau s'écoule, p. ex. avec contact direct de l'eau avec l'agent chauffant
F24H 9/20 - Disposition ou montage des dispositifs de commande ou de sécurité
09 - Appareils et instruments scientifiques et électriques
11 - Appareils de contrôle de l'environnement
35 - Publicité; Affaires commerciales
Produits et services
Electronic controls for boilers and water heaters including swimming pool heaters. Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes; heating apparatus and heating systems; cooking systems; ovens; furnaces; boilers; water heaters; swimming pool heaters; parts and fittings for all of the aforesaid goods. Retail services relating to the sale of boilers and water heaters including swimming pool heaters and parts and fittings for the aforesaid goods.
09 - Appareils et instruments scientifiques et électriques
11 - Appareils de contrôle de l'environnement
35 - Publicité; Affaires commerciales
Produits et services
Electronic controls for boilers and water heaters including swimming pool heaters. Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes; water heaters; apparatus and installations for heating and boiling of fluids; boilers; heaters; swimming pool heaters; parts and fittings for all of the aforesaid goods. Retail services relating to the sale of boilers and water heaters; including swimming pool heaters and parts and fittings for the aforesaid goods.
09 - Appareils et instruments scientifiques et électriques
11 - Appareils de contrôle de l'environnement
35 - Publicité; Affaires commerciales
Produits et services
Electronic controls for boilers and water heaters including swimming pool heaters. Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes; heating apparatus and heating systems; cooking systems; ovens; furnaces; boilers; water heaters; swimming pool heaters; parts and fittings for all of the aforesaid goods. Retail services relating to the sale of boilers and water heaters including swimming pool heaters and parts and fittings for the aforesaid goods.
(1) Water heaters, heating boilers and programmable electronic controllers for water heaters and heating boilers sold as a component of water heaters and heating boilers.
A modulating burner apparatus includes a variable speed blower feeding a multi-chamber burner having first and second burner chambers. A manifold system communicates the blower with the burner, and a flow control valve member is located between the blower and the second chamber of the burner. The flow control valve is configured to provide fuel and air mixture from the blower to only the first burner chamber at lower blower speeds of the blower and to both the first and second burner chambers at higher blower speeds of the blower.
F23D 14/02 - Brûleurs à gaz avec prémélangeurs, c.-à-d. dans lesquels le combustible gazeux est mélangé à l'air de combustion en amont de la zone de combustion
F23N 3/00 - Régulation de l'amenée d'air ou du tirage
F24H 1/28 - Appareils de chauffage de l'eau autres qu'instantanés ou à accumulation, p. ex. chauffe-eau pour chauffage central avec une chemise d'eau entourant la ou les chambres de combustion la chemise d'eau étant monobloc renfermant un ou plusieurs tubes foyers ou de fumées
F24D 11/00 - Systèmes de chauffage central utilisant la chaleur accumulée dans des matériaux accumulateurs
09 - Appareils et instruments scientifiques et électriques
11 - Appareils de contrôle de l'environnement
Produits et services
Electronic controls for water heaters and heating boilers Electronic controls for remotely controlling water heaters which are sold as an integral component of water heaters; Electronic controls for remotely controlling heating boilers which are sold as an integral component of water heaters
09 - Appareils et instruments scientifiques et électriques
11 - Appareils de contrôle de l'environnement
41 - Éducation, divertissements, activités sportives et culturelles
Produits et services
Hot water storage tanks. Electronic controls for heating boilers. Furnaces, water heaters, hydronic heating boilers, pool
heaters. Educational services, namely, conducting classes and
seminars in the field of water heater and boiler
installation and repair.
09 - Appareils et instruments scientifiques et électriques
11 - Appareils de contrôle de l'environnement
41 - Éducation, divertissements, activités sportives et culturelles
Produits et services
(1) Electronic controls for heating boilers; residential furnaces and industrial furnaces, water heaters, hydronic heating boilers, metal hot water storage tanks, pool heaters. (1) Educational services, namely, conducting classes and seminars in the field of water heater and boiler installation and repair
09 - Appareils et instruments scientifiques et électriques
11 - Appareils de contrôle de l'environnement
41 - Éducation, divertissements, activités sportives et culturelles
Produits et services
Metal hot water storage tanks Electronic controls for heating boilers Furnaces, water heaters, hydronic heating boilers, pool heaters Educational services, namely, conducting classes and seminars in the field of water heater and boiler installation and repair
A control system for managing and interfacing a plurality of water heaters, e.g. boilers. The control system includes a first boiler unit controlled by a first boiler control unit and a second boiler unit controlled by a second boiler control unit. The first boiler control unit is operable to coordinate the operation of the first and second boiler units in response to changes in output demand. The flues of the first and second boiler units are connected to a common flue. The control system further includes an interface and an interface control system. The interface control system communicates requests from the interface, to report and/or alter the operating parameters of the first and second boiler units, to the first and second boiler control units and communicates the request outcome(s) back to the interface.
41 - Éducation, divertissements, activités sportives et culturelles
Produits et services
(1) Educational services, namely, conducting on-line classes and seminars in the field of water heater and boiler installation and repair.
(2) Educational services, namely, conducting classes and seminars in the field of water heater and boiler installation and repair.
A control system for managing and interfacing a plurality of water heaters, e.g. boilers. The control system includes a first boiler unit controlled by a first boiler control unit and a second boiler unit controlled by a second boiler control unit. The first boiler control unit is operable to coordinate the operation of the first and second boiler units in response to changes in output demand. The flues of the first and second boiler units are connected to a common flue. The control system further includes an interface and an interface control system. The interface control system communicates requests from the interface, to report and/or alter the operating parameters of the first and second boiler units, to the first and second boiler control units and communicates the request outcome(s) back to the interface.
A water heating apparatus includes a burner having first and second zones. First and second blowers provide premixed fuel and air to the first and second zones, respectively. An automated control system controls the two blowers.
F23D 14/02 - Brûleurs à gaz avec prémélangeurs, c.-à-d. dans lesquels le combustible gazeux est mélangé à l'air de combustion en amont de la zone de combustion
F23D 14/34 - Brûleurs spécialement conçus pour être utilisés avec des moyens comprimant le combustible gazeux ou l'air de combustion
F24H 1/28 - Appareils de chauffage de l'eau autres qu'instantanés ou à accumulation, p. ex. chauffe-eau pour chauffage central avec une chemise d'eau entourant la ou les chambres de combustion la chemise d'eau étant monobloc renfermant un ou plusieurs tubes foyers ou de fumées
F24H 9/20 - Disposition ou montage des dispositifs de commande ou de sécurité
A control system is provided for a modulated heating system including a plurality of modulating water heaters, which may be modulating boilers. A deadband control scheme provides for reduced cycling of the modulating heater when total system heat demand falls between the maximum output of one heater and the sum of the maximum output of that one point and the minimum firing point of the next subsequent heater.
A fire tube heater apparatus includes a shell, with a tube bundle received in the shell and a burner section communicated with the tube bundle. The tubes in the tube bundle have circular inlet and outlet end portions with a flattened, serpentine intermediate portion. The intermediate portion has a width greater than the inlet outside diameter and a tube thickness transverse to the width less than the inlet outside diameter.
A dual chamber burner assembly is provided for use with a heater apparatus having dual combustion air premix blowers. The burner assembly includes first and second interior zones communicated with first and second foraminous outer wall portions. First and second fuel and air inlet passages are communicated with the first and second interior zones, respectively.
F24H 1/40 - Appareils de chauffage de l'eau autres qu'instantanés ou à accumulation, p. ex. chauffe-eau pour chauffage central avec un ou plusieurs tubes d'eau
84.
GAS FIRED MODULATING WATER HEATING APPLIANCE WITH DUAL COMBUSTION AIR PREMIX BLOWERS
A water heating apparatus (10) uses a low range blower assembly (52) and a high range blower assembly (54), each providing a variable flow of premixed fuel and air to a burner assembly (42). Appropriate choice of the operating ranges of the blower assemblies can provide a high turndown ratio approximately equal to the product of the turndown ratios of each of the individual blower assemblies. Turndown ratios as high as 25:1 are achievable.
F24H 1/28 - Appareils de chauffage de l'eau autres qu'instantanés ou à accumulation, p. ex. chauffe-eau pour chauffage central avec une chemise d'eau entourant la ou les chambres de combustion la chemise d'eau étant monobloc renfermant un ou plusieurs tubes foyers ou de fumées
F23D 14/08 - Brûleurs à gaz avec prémélangeurs, c.-à-d. dans lesquels le combustible gazeux est mélangé à l'air de combustion en amont de la zone de combustion du type à induction, p. ex. becs Bunsen avec les orifices de sortie disposés axialement dans la tête de brûleur
F23D 14/34 - Brûleurs spécialement conçus pour être utilisés avec des moyens comprimant le combustible gazeux ou l'air de combustion
F23L 9/00 - Passages ou ouvertures pour introduire l'air secondaire nécessaire à la combustion complète du combustible
F23N 1/02 - Régulation de l'alimentation en combustible conjointement au réglage de l'amenée d'air
85.
GAS FIRED MODULATING WATER HEATING APPLIANCE WITH DUAL COMBUSTION AIR PREMIX BLOWERS
A water heating apparatus uses a low range blower assembly and a high range blower assembly, each providing a variable flow of premixed fuel and air to a burner assembly. Appropriate choice of the operating ranges of the blower assemblies can provide a high turndown ratio approximately equal to the product of the turndown ratios of each of the individual blower assemblies. Turndown ratios as high as 25:1 are achievable.
F23D 14/02 - Brûleurs à gaz avec prémélangeurs, c.-à-d. dans lesquels le combustible gazeux est mélangé à l'air de combustion en amont de la zone de combustion
A water heating apparatus uses a low range blower assembly and a high range blower assembly, each providing a variable flow of premixed fuel and air to a burner assembly. Appropriate choice of the operating ranges of the blower assemblies can provide a high turndown ratio approximately equal to the product of the turndown ratios of each of the individual blower assemblies. Turndown ratios as high as 25:1 are achievable.
A method of controlling a modulating water heater supplying water to a system includes sensing a parameter which changes corresponding to a change in system flow rate, the sensed parameter being a parameter other than system temperature, and then modulating output of the heater in response to a change in the sensed parameter. Early detection of system flow rate changes permits early modulation of water heater output before the changes in flow rate have had time to significantly impact the system temperature.
A control system is provided for a modulated heating system including at least one modulating water heater and a controller. A deadband control scheme provides for reduced cycling of the modulating heater when total system heat demand falls between the maximum output of one heater and the sum of the maximum output of that one point and the minimum firing point of the next subsequent heater. Condensation of flue gas products is prevented by monitoring flue exhaust temperature for each heater and controlling the modulation of each heater to maintain a minimum heater output sufficiently high to prevent condensation of flue gas products from that heater. Rapid reaction to changes in system heat demand is provided by sensing changes in flow rate in a primary loop of the system and anticipating resulting changes in temperature thus allowing for change in heater output prior to the time the change in flow rate has fully impacted system temperature.
A control system is provided for a modulated heating system including a plurality of modulating water heaters, which may be modulating boilers. A deadband control scheme provides for reduced cycling of the modulating heater when total system heat demand falls between the maximum output of one heater and the sum of the maximum output of that one point and the minimum firing point of the next subsequent heater.
