Abrégé

A processor for a controller of a water heater is configured to receive water heater control parameters and an output from a sensor indicating a measured temperature of water in the water heater. The processor is also configured to determine whether to enter an anti-stacking control mode or to enter a demand anticipation control mode. In the anti-stacking control mode the processor is configured to initiate a call for heat when the measured temperature reaches a trigger temperature, calculate a burner on delay value and set a second timer with the calculated value, and calculate a reduced activation time. In the demand anticipation control mode the processor is configured to increase the variable offset based on a frequency of the demand anticipation control mode being activated, initiate a call for heat, and control, based on the reduced activation time or the increased offset value, the burner.

Classes IPC  ?

• F24H 9/20 - Disposition ou montage des dispositifs de commande ou de sécurité
• F24H 1/18 - Appareils de chauffage à accumulation d'eau
• F24H 1/08 - Appareils monoblocs ou autonomes, c. à d. chauffe-eau avec dispositifs de commande et pompe incorporés
• G05D 23/00 - Commande de la température
• F23N 5/24 - Systèmes prévenant le développement de conditions anormales ou indésirables, c. à d. dispositifs de sécurité
• G05B 15/02 - Systèmes commandés par un calculateur électriques
• F24H 1/48 - Appareils de chauffage de l'eau pour chauffage central comprenant des moyens pour chauffer l'eau sanitaire

Abrégé

A method of controlling a gas powered water heater includes attempting to pick a main gas valve of the main burner using a first pick method. The first pick method includes closing a switch of a valve pick system to couple a capacitor of the valve pick system to the main gas valve for a first length of time to discharge energy stored in the capacitor to the main gas valve, and opening the switch of the valve pick system after the energy stored in the capacitor is discharged to the main gas valve. The controller determines if the main gas valve is open after using the first pick method. When the controller determines the main gas valve is not open, the controller attempts to pick the main gas valve using a second pick method different than the first pick method.

Classes IPC  ?

• F24H 9/20 - Disposition ou montage des dispositifs de commande ou de sécurité
• F24H 1/08 - Appareils monoblocs ou autonomes, c. à d. chauffe-eau avec dispositifs de commande et pompe incorporés
• G05B 15/02 - Systèmes commandés par un calculateur électriques
• F24H 1/18 - Appareils de chauffage à accumulation d'eau
• F24H 15/31 - Commande des vannes de vannes ayant un seul orifice d'entrée et un seul orifice de sortie, p.ex. de vannes de régulation de débit
• F24H 9/00 - APPAREILS DE CHAUFFAGE DE FLUIDES, p.ex. DE L'AIR OU DE L'EAU, COMPORTANT DES MOYENS DE PRODUCTION DE CHALEUR, p.ex. DES POMPES À CHALEUR, EN GÉNÉRAL - Parties constitutives
• F24H 9/13 - Raccordement des éléments chauffants, de transfert ou de production de chaleur aux tuyauteries de circulation pour appareils de chauffage de l’eau

Abrégé

A control system for controlling a gas powered water heater includes a thermoelectric generator to provide electrical power at a first voltage, a valve control system to selectively hold a main gas valve in an open position, a valve pick system to selectively pick the main gas valve from a closed position to the open position using the electrical power at the first voltage, and a power converter. The controller is electrically powered by a boosted electrical power at the second voltage from the power converter. The controller is communicatively coupled to the valve control system, the valve pick system, and the safety system. The controller is configured to control operation of the main burner and the main gas valve using the valve control system, the valve pick system, and the safety system to provide water heated to substantially a setpoint temperature.

Classes IPC  ?

• F24H 9/20 - Disposition ou montage des dispositifs de commande ou de sécurité
• F24H 1/18 - Appareils de chauffage à accumulation d'eau

Abrégé

A safety system for use with a thermoelectric generator is described. The safety system includes a safety switch operatively connected to the thermoelectric generator output. The safety switch has a first state in which the thermoelectric generator can provide a first voltage to a load, and a second state in which the thermoelectric generator cannot output the first voltage to the load and in which the thermoelectric generator can output a second voltage to the load. The second voltage is a non-zero voltage having a magnitude less than the first voltage.

Classes IPC  ?

• F24H 9/20 - Disposition ou montage des dispositifs de commande ou de sécurité
• F23N 5/24 - Systèmes prévenant le développement de conditions anormales ou indésirables, c. à d. dispositifs de sécurité
• F24H 1/18 - Appareils de chauffage à accumulation d'eau

Abrégé

A gas flow controller for use in a gas fired apparatus includes an actuator, a pilot valve operably connected to the actuator, a main burner valve, and a flow controller valve operably connected to the actuator. The pilot valve is moveable from a closed position to an open position by actuation of the actuator to provide selective fluid communication between a gas inlet and a first fluid chamber. The main burner valve provides selective fluid communication between the first fluid chamber and a main burner outlet. The flow controller valve is moveable from a closed position to an open position by actuation of the actuator to provide selective fluid communication between the gas inlet and a back side of the main burner valve to maintain the main burner valve in a closed position when the pilot valve is in the open position.

Classes IPC  ?

• F24H 9/20 - Disposition ou montage des dispositifs de commande ou de sécurité
• F23Q 9/12 - Allumage par flamme pilote dépendants de l'alimentation principale en combustible permettant l'alimentation en combustible du brûleur principal selon l'existence de la flamme-pilote
• F24H 1/18 - Appareils de chauffage à accumulation d'eau
• F23Q 9/08 - Allumage par flamme pilote dépendants de l'alimentation principale en combustible

Abrégé

A control system for a gas powered appliance includes a power source to provide electrical power to control at least one electrically actuated gas valve, a valve control system to selectively couple electrical power from the power source to the electrically actuated gas valve, and a controller. The valve control system includes a first switch and a second switch. The first switch and the second switch are electrically connected in series between the power source and the electrically actuated gas valve. The controller is operatively connected to the first switch and the second switch and configured to control the first switch and the second switch to selectively couple power from the power source to the electrically actuated gas valve.

Classes IPC  ?

• F24H 9/20 - Disposition ou montage des dispositifs de commande ou de sécurité
• F24H 1/18 - Appareils de chauffage à accumulation d'eau
• F23N 5/24 - Systèmes prévenant le développement de conditions anormales ou indésirables, c. à d. dispositifs de sécurité

Abrégé

A control system for controlling a gas powered water heater includes a power system to provide electrical power, a valve control system to selectively hold a main gas valve in an open position, a valve pick system to selectively pick the main gas valve from a closed position to the open position, a safety system to prevent the valve control system from holding the main gas valve in the open position, and a controller. The controller is electrically powered by the power system and communicatively coupled to the valve control system, the valve pick system, and the safety system. The controller is configured to control operation of the main burner and the main gas valve using the valve control system, the valve pick system, and the safety system to provide water heated to substantially a set point temperature.

Classes IPC  ?

• F24H 9/20 - Disposition ou montage des dispositifs de commande ou de sécurité
• F23N 5/24 - Systèmes prévenant le développement de conditions anormales ou indésirables, c. à d. dispositifs de sécurité
• F24H 1/18 - Appareils de chauffage à accumulation d'eau
• F23N 1/00 - Régulation de l'alimentation en combustible
• F24H 1/26 - 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