Entries |
Document | Title | Date |
20080257281 | Water Heater and a Method of Operating Same - A method of determining an operating water temperature for a boiling water heater includes the following steps: (a) adding water to a tank to a predetermined level; (b) heating the water in the tank to approximately 95 degrees Celsius; (c) applying sufficient heat to the water in the tanks so as to cause boiling of the water in the tank within a predetermined first period of time; (d) measuring the boiling water temperature of the water in the tank; and (e) subtracting a predetermined temperature from the boiling water temperature measured in step (d) to arrive at the operating water temperature. | 10-23-2008 |
20080264354 | Apparatus and Method for Generating Steam - The present invention relates to a steam generating apparatus ( | 10-30-2008 |
20080314337 | WATER HEATER CONTROL - A system and method of using a set-back or programmable thermostat for heating or cooling systems to also controlling a fast-recovery water heater such as a power-vented fossil fuel powered water heater such that the water heater is disabled during a set-back mode of the thermostat. The system sends a control signal to a relay module adjacent to the water heater, into which the water heater electrical power cord can be plugged into. The interlock mechanism of the water heater prevents operation of the water heater when power to the water heater is interrupted. | 12-25-2008 |
20090025654 | Automatically controlled outdoor pelletized bio-fuel-burning hydronic heater - A heating system has a heating unit with a combustion chamber for burning wood pellets or other pelletized fuel. The heating unit is controlled by a process control module that automatically keeps all operating functions within predetermined limits for safe, efficient and easy operation. The unit also includes a combustion air distribution assembly with a stir shaft that rotates within the combustion chamber and introduces combustion air through orifices along the length of the shaft to enhance fuel combustion. A thermo cycle plumbing assembly serves as a safety feature by preventing overheating in the event of a power failure or pump failure. Also included in the unit is a removable insulated firebox burn chamber that provides a high temperature combustion atmosphere and a heat/particulate recovery module which provides maximum heating efficiency and reduces emissions, meeting EPA requirements and contributing to a cleaner environment. | 01-29-2009 |
20090120380 | TEMPERATURE CONTROL SYSTEM FOR A WATER HEATER - A system for detecting stacking and controlling temperature in a water heater. A controller with a connection to a temperature sensor and heating element in a water tank of the heater may be designed to limit stacking and its effects. The controller may use a sensing and calculation technique to detect the stacking. If stacking is detected, then the setpoint for the heater may be lowered so that the outlet water temperature is within a safe limit. If stacking is not detected, then the setpoint may be gradually restored to optimize water heater capacity. | 05-14-2009 |
20090120381 | WATER HEATER WITH IONIZED IGNITION AND ELECTRONIC CONTROL OF TEMPERATURE - A water heater is controlled by an electronic system that initiates the operation of the heater when a flow detector sends a demand signal for hot water flow to the electronic card, which ignites a burner as function of a temperature programmed by the user. The burner is lit gradually by an electrical spark emitted by a spark plug connected to the electronic card, which in turn controls gas feed to the burner. As soon as the burner is lit, the electric current generated by the first spark plug is transformed by the ionization effect, changing the polarization of the current, which is detected by another spark plug that emits the change signal to the electronic card for further control of the heater. The heater operates without a permanently lit pilot light. | 05-14-2009 |
20090151652 | Gas Water Heater With Harmful Gas Monitoring And Warning Functions And The Method of Monitoring And Warning - A gas water heater with a warning function, the gas water heater being disposed in a facility and comprising: a gas water heater main body including a controller having a warning cell; and a gas detecting unit separate from the main body and disposed at an indoor monitoring point of the facility, the gas detecting unit having a gas sensor and being in communication with the controller. | 06-18-2009 |
20090159017 | HOT WATER SUPPLY APPARATUS - A hot water supply apparatus including: a hot-water supply pipe for guiding hot water generated by a hot-water generator to a hot-water supplying terminal; two hot-water supply temperature sensors for detecting water temperature in the hot-water supply pipe; a temperature control unit for adjusting a temperature of the hot water supplied to the hot-water supplying terminal; a sensor abnormality determining unit for determining sensor abnormality when a difference between temperatures detected by the two hot-water supply temperature sensors is larger than a predetermined permissible error; a sensor selector for selectively setting one hot-water supply temperature sensor detecting a higher temperature as a hot-water supply temperature sensor for temperature control; and a hot-water supply temperature controller for controlling the temperature control unit so that a temperature detected by the hot-water supply temperature sensor for temperature control selected from the two hot-water supply temperature sensors is matched with a set temperature. | 06-25-2009 |
20100251973 | FLUID HEATING SYSTEM - A fluid heat exchange system with a fluid flow circuit having a heat exchange fluid flow loop, a heat absorption component (as in a domestic hot water tank inclusive of small commercial use tanks as in tanks of 20 to 120 gallons), a heat exchanger and preferably also a pump. A controlled and automated fuel supply source based heater (as in a pellet stove) is in heat passage communication with the said heat exchanger. A control unit triggers activation of the pump upon fluid in the heat absorption component reaching or dropping below a preset temperature, and the fluid flow circuit is arranged such that, during times of non-activation of the pump, fluid is free to flow in a unidirectional flow within the fluid circuit based on thermodynamic temperature differentials alone. A retrofitting of a domestic hot water tank is also featured preferably making use of preexisting drain and safety vent porting for in-feed and out-feed porting in the exchange loop side. Also, the flow circuit preferably is free of check valves and steam accommodation equipment. | 10-07-2010 |
20100300377 | WATER HEATER APPARATUS WITH DIFFERENTIAL CONTROL - An apparatus for a water heater is configured to control heating operation of a water heater to maintain a desired water temperature. The various embodiments comprise a sensor that provides an output indicative of the sensed temperature of water in a water heater, and a controller in communication with the sensor. The controller is operable to initiate a present call for heat where the sensed temperature is a predetermined amount below a set-point temperature. The controller is also configured to determine whether a prior call for heat occurred within a predetermined elapsed time period preceding the present call for heat, and to respond thereto by delaying the start of heating operation in the present call for heat until one of a predetermined time period or a predetermined sensed temperature change has occurred. | 12-02-2010 |
20110000444 | GAS BOILER HAVING CLOSED-TYPE CISTERN TANK - A gas boiler having a closed cistern tank with no diaphragm, in which the volume of the cistern tank can be reduced, the closed cistern tank storing returned heating water and absorbing pressure changes of the heating water. The cistern tank having no diaphragm has an internal space that is isolated from the atmosphere, and includes a heating water inlet through which the heating water is introduced, a heating water outlet through which the heating water is discharged toward a circulation pump, a water level detecting sensor which detects the water level of the heating water stored in the cistern tank, and a safety valve for maintaining the pressure of an internal space of the cistern tank to less than a predetermined value. | 01-06-2011 |
20110061608 | DEVICE FOR SUPPLYING WARM WATER AND METHOD THEREOF - Provided is a device for supplying warm water and a method thereof. The device for supplying warm water includes a first heater configured to have a first set capacity and heating received water, a second heater configured to have a second set capacity greater than the first set capacity and heating received water, and a control part calculating heater driving cycles of the first heater and the second heater according to a set water temperature, and driving the first heater and the second heater according to the heater driving cycles. The control part calculates the heater driving cycle of the first heater by using a phase control method, and calculates the heater driving cycle of the second heater by using a zero-crossing control method. | 03-17-2011 |
20110271914 | Flue-Gas Analysis Safety Apparatus - Flue-gas analysis safety apparatus | 11-10-2011 |
20110277706 | GAS-FIRED HEATING DEVICE HAVING A THERMOPILE - A gas-fired heating device having a burner, a pilot to provide a pilot flame, a thermopile thermally coupled to the pilot flame and configured to generate a power in response to the pilot flame, an electrically controlled gas valve to control the flow of gas to at least one of the pilot and the burner, and a controller electrically coupled to the thermopile and the gas valve. The controller receives and is powered by the power from the thermopile. The controller initiates closing of the gas valve after a monitored component of the power, such as a voltage, traverses a threshold. | 11-17-2011 |
20110315091 | HOT-WATER SUPPLY SYSTEM - When a detection temperature by a hot-water tank thermister ( | 12-29-2011 |
20120055419 | DEMAND MANAGEMENT FOR WATER HEATERS - A water heating control and storage system, including an insulated tank for containing water to be heated. The storage system has a heat exchanger connected to the tank for using energy stored during off peak times as in water heated above normal storage temperature. An operation control device receives a demand response signal and enables water to be heated in a heat storing mode to heat water for usage. A method for controlling a water heating storage system includes providing an insulated tank for containing water to be heated; providing a heat exchanger coupled to the tank; and selectively operating in a heat storing mode in which water in the tank is heated to a higher than normal temperature and a heat exchange mode during which heat is extracted from the water stored in the tank by a heat exchanger for supplying stored energy to another energy consuming load in response to a demand response signal. | 03-08-2012 |
20120060771 | HOT WATER HEATER SCHEDULER - A hot water heater and method for controlling same. The hot water heater can be programmed to only heat water when the consumer anticipates that they will need it. The consumer can control the temperature of the water, the time at which the hot water will be needed, and can specify the speed vs. efficiency tradeoff regarding how the water is heated by selecting an operating mode, for example, thereby resulting in a more energy efficient and cost effective hot water heater. | 03-15-2012 |
20120125268 | DIRECT VENT/POWER VENT WATER HEATER AND METHOD OF TESTING FOR SAFETY THEREOF - A water heater includes a combustor, a gas valve, a blower, a detector, and an operating device. The detector senses a speed of a motor of the blower. The operating device is stored with reference speed ranges under various gas supplies to control the gas valve to cut off the gas supply when the detector senses that the speed of the motor of the blower is beyond the reference speed range | 05-24-2012 |
20120247403 | INSTANTANEOUS HOT-WATER SYSTEM - Disclosed is a hot-water system including a water tank with a water inlet and a water outlet for storing air-conditioning water; a pump motor, connected to the water outlet of the water tank through a connection pipe at one end thereof, circulating the air-conditioning water in the water tank by a pumping operation; an instantaneous water heater, connected to the other end of the pump motor by a connection pipe, instantaneously heating the air-conditioning water being circulated by the pumping operation of the pump motor; and an air-conditioning member, connected to both of the instantaneous water heater and the water tank to form an air-conditioning fluid path of a closed loop and guide the flow of the air-conditioning water; wherein the surface temperature of the air-conditioning member is increased by the heat of the air-conditioning water heated by the instantaneous water heater. | 10-04-2012 |
20140060457 | METHOD AND APPARATUS FOR DETECTING AND COMPENSATING FOR SEDIMENT BUILD-UP IN TANK-STYLE WATER HEATERS - A method for detecting and compensating for sediment build-up in a tank style water heater is disclosed. An illustrative but non-limiting example may include monitoring a temperature of water within a water storage tank of a water heater over time, resulting in a monitored temperature profile. The method may then include determining if the monitored temperature profile includes one or more features that indicate sediment build up in the water storage tank, and if so, provide an output that indicates sediment build up is present. | 03-06-2014 |
20140360441 | METHOD OF GENERATING HEAT - The invention provides a method for producing a supply of a heated fluid, which method comprises passing the fluid through a heat exchanger unit where it is heated by a heat source; characterised in that the heat source derives heat from the exothermic reaction of two or more chemical reactants. The chemical reactants are preferably an acid and a base. | 12-11-2014 |
20150013622 | WATER HEATER APPLIANCE AND A METHOD FOR OPERATING THE SAME - A water heater appliance and a method for operating the same are provided. The method includes receiving a first temperature measurement from a temperature sensor of the water heater appliance, receiving a second temperature measurement from the temperature sensor of the water heater appliance, and establishing if water is flowing through a conduit of the water heater appliance based at least in part on the first and second temperature measurements. | 01-15-2015 |
20150114313 | HOT WATER SUPPLY SYSTEM - A hot water supply system provided on a water pipeline, which includes a water inflow side and a water outlet side. The hot water supply system includes a plurality of water heaters; each includes a conduit, a heating device, a calculating unit, and a control unit. The conduit includes an inlet section, an outlet section, and a heating section in sequence, wherein the inlet section and the outlet section are connected with the water inflow side and the water outflow side respectively; the heating device heats the heating section; the calculating unit estimates a heating workload needed. If the heating workload of any water heater exceeds a predetermined upper limit workload thereof, the control unit of one water heater controls the other idle heating device to heat water, which ensures that water temperature of water provided to the water outflow side would reach a demanded water temperature. | 04-30-2015 |
20150345829 | TANKLESS WATER HEATER - This invention is including a controller, a waterway and a heat pump circulation loop; the waterway, in the water-flowing direction, successively includes: an inlet, a heating part and an outlet; the heat pump circulation loop successively includes: a compressor, an evaporator, a condenser and a throttle device, wherein the compressor is in control connection with the controller, and the condenser includes a heating condenser and a pressure relief condenser, wherein the heating condenser is in heat conduction contact with the heating part in the waterway and is set in series with the pressure relief condenser in the heat pump circulation loop, besides, a heating condenser valve is set in the branch where the heating condenser lies and a pressure relief condenser valve in that where the pressure relief condenser stands, wherein the heating condenser valve and the pressure relief condenser valve are in control connection with the controller. | 12-03-2015 |
20150362212 | Waste-Heat Recovery System in Oil-Cooled Gas Compressor - The purpose of the present invention is: to enable hot water at a required temperature to be supplied, even in cases when compressor load factor is low; to suppress heat dissipation from a waste-heat recovery device; and to improve waste-heat recovery rate. A waste-heat recovery system in an oil-cooled gas compressor is provided with: a compressor main body ( | 12-17-2015 |
20160003486 | HOT WATER APPARATUS AND FAILURE NOTIFICATION METHOD FOR HOT WATER APPARATUS - An indirect-heating hot water apparatus is designed to correctly detect clogging in a secondary water circuit at low costs. A hot water apparatus is provided with: a primary water circuit in which water heated by absorbing heat from a refrigerant at a heat exchanger circulates; a secondary water circuit connected to the primary water circuit via a heat exchanger, in which water circulates; and a tank connected to the secondary water circuit, in which the water circulating in the secondary water circuit is stored. The hot water apparatus detects the temperature of the water circulating in the primary water circuit and the temperature of the water stored in the tank. When the temperature of the water circulating in the primary water circuit is at or above a first threshold and the temperature of the water stored in the tank is at or below a second threshold, the hot water apparatus issues a notification indicating that the secondary water circuit is clogged. | 01-07-2016 |
20160097546 | HEAT PUMP WATER HEATER APPLIANCE - Water heater appliances and methods for operating water heater appliances are provided. A water heater appliance includes a tank defining an interior volume, and a sealed system for heating water within the interior volume. The sealed system includes a compressor operable to compress refrigerant, a first condenser downstream of and in fluid communication with the compressor, and a second condenser downstream of and in fluid communication with the compressor. The first and second condensers are each operable to heat water within the interior volume using energy from the refrigerant. The sealed system additionally includes a valve in fluid communication with the first and second condensers and configured to vary a ratio of refrigerant flow through the first and second condensers. | 04-07-2016 |
20160138829 | SYSTEM FOR CONTROLLING EXHAUST HEAT RECOVERY TEMPERATURE USING MIXING VALVE AND METHOD THEREFOR - There is provided a system including: an automatic supplement valve configured to automatically supplementing direct water; an expansion tank configured to be connected to the automatic supplement valve to adjust expansion pressure depending on the temperature change of the direct water; an exhaust heat pump configured to be connected to the expansion tank to circulate heat in an exhaust heat line connecting the exhaust heat source and the hot water tank; and a mixing valve configured to be extendedly formed between a first hot water (1H) line for receiving the exhaust heat of the exhaust heat source and a second hot water (2H) line having passed through the exhaust heat exchanger of the hot water tank to mix the first hot water (1H) with the second hot water (2H). | 05-19-2016 |
20160187029 | CONNECTED HOT-WATER SUPPLY SYSTEM - To provide a connected hot-water supply system capable of preventing combustion failure of the burner of each hot-water supplier during hot-water supply operation to achieve stable hot-water supply operation. When dispersion in the rotation speed of a fan | 06-30-2016 |
20160377323 | WATER HEATER APPLIANCE WITH TANK CAPACITY CONTROL INTERFACE AND RELATED CONTROL METHODS - In one aspect, a method for controlling the operation of a water heater appliance may generally include receiving a user input associated with a selection of a tank capacity setpoint for the water heater appliance, determining a tank temperature setpoint for water contained within a tank of the water heater appliance based on the user-selected tank capacity setpoint and controlling the operation of the water heater appliance based on the tank temperature setpoint. | 12-29-2016 |