| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 122180100 |
Having heat exchange feature
| 95 |
| 122180500 |
And external water tank | 3 |
| 20100101507 | WATER HEATERS WITH FUEL LINE AND DOOR ASSEMBLY - A water heater includes a water container, a combustion chamber having an opening that may be covered by a door and located adjacent the water container, a burner associated with the combustion chamber and arranged to combust fuel to heat water in the water container, and a control valve for regulating fuel flow from an external fuel source. A fuel line extends between the control valve and the burner, the fuel line has a first substantially rigid portion connected to the control valve, a second interior portion extending from the door to the burner and a third flexible portion fixedly connected to both of the first and second portions. | 04-29-2010 |
| 20100101508 | WATER HEATERS WITH SEALED DOOR ASSEMBLY - A water heater door assembly includes a base plate sized and shaped to substantially sealingly cover an access opening in a water heater combustion chamber and has at least one opening through which a fuel supply line extends at least partly between a burner in the combustion chamber and a gas control valve, and a flexible seal positioned at least partly within the opening including an engaging portion substantially sealed to an edge portion of the opening, and a through hole that is shaped to receive the fuel supply and has a size slightly smaller than the size of an outer dimension of the fuel supply line such that the flexible seal and the fuel supply line are friction fit together to form a seal. | 04-29-2010 |
| 20120222631 | GAS-FIRED WATER HEATER WITH SEPARABLE HEAT EXCHANGER OR DETACHABLY CONNECTED EXTERNAL WATER HEATER - A hot water heater, particularly but not exclusively for domestic use, is herein described and having removably secured thereto a modular heat exchanger or an external water heater to heat the water in a separate tank portion. The two are easily separable from one another for service, repair or interchange. The air-to-air heat exchanger extracts heat loss from the central flue of a gas fired water heater to provide a source of heat for the building in which the hot water heater is installed. The external water heater is provided with a gas-fired burner for heating water from the tank circulated in a heat exchanger to transfer heat from a fluid heated by the burner and circulated in the heat exchanger to transfer the heat to water circulated from the water tank. | 09-06-2012 |
| 122170200 |
Liquid fuel burner | 2 |
| 20080223313 | HIGH EFFICIENCY WATER HEATER - An application for a method of heating water includes burning fuel to produce hot gases and heating a first mass of water with a first heat exchanger coupled to the hot gases. Heat remaining after the hot gases pass through the first heat exchanger is used by a second heat exchanger to heat a second mass of water. The first mass of water is partially isolated from the second mass of water and the first mass of water is contained substantially within the second mass of water. The second mass of water is colder than the first mass of water and, thereby, condenses more water vapor out of the hot gases. | 09-18-2008 |
| 20150114317 | COMPACT SERVICEABLE DIESEL HEATER METHOD AND APPARATUS - A diesel heater has two compartments with the components which are frequently serviced being located in one of the compartments which is easily accessible to the user. The heater is of reduced size and weight for smaller coaches and boats and the control system allows for maximum safety and flexibility in operating from AC power, engine power or burner combustion. | 04-30-2015 |
| Entries |
| Document | Title | Date |
|---|
| 20090173291 | Gas and electric heating system - The gas and electric heating system has combination gas and electric heat generators to provide energy to a steam-generating boiler. The system utilizes a blue-flame, gaseous-fuel burner disposed externally of the boiler in one embodiment and a flame jet burner in a second embodiment. Electrical heating elements are positioned inside the boiler. Steam generated in the boiler flows to a heating core. The core is positioned in an air duct. Heat is transferred from the core to air flowing through the duct. The heated air flows from the duct into an area to be heated. Controls are provided to correlate the functions of the various components in the system. | 07-09-2009 |
| 20090188447 | Condensing Side-Arm Water Heater - An apparatus for providing a condensing side-arm water heater with improved efficiency. The condensing side-arm element recirculates exhaust gases into heating the cooler part of a water heater tank by the thermosiphon (or buoyancy) effect in a counterflow configuration, thus increasing efficiency of the water heater. | 07-30-2009 |
| 20100116225 | Integrated Dual Chamber Burner - 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. | 05-13-2010 |
| 20100154723 | ULTRA LOW NOx WATER HEATER | 06-24-2010 |
| 20100192874 | PULSE COMBUSTION SYSTEM FOR A WATER HEATER - A water heater. The water heater includes a water circuit adapted to conduct water to be heated, a combustion system operable to produce products of combustion and operable to provide the products of combustion to heat water in the water circuit, and a fuel train assembly configured to provide fuel to the combustion system. The fuel train assembly includes a gas expansion chamber, a first gas shut-off valve positioned upstream of the expansion chamber, and a second gas shut-off valve positioned downstream of the expansion chamber. | 08-05-2010 |
| 20100282185 | BURNER AND METHOD FOR IMPLEMENTING AN OXYCOMBUSTION - The invention relates to a method of combustion of a fuel using an oxygen containing gas and at least one mainly inert gas, in which:
| 11-11-2010 |
| 20100294214 | BURNER FOR GAS BOILER - The present invention relates to a burner for gas boiler that produces stable combustion without lifting of flame by stably guiding gas and primary and secondary air to the inside of an upper plate and having a first slope having main fire holes to improve efficiency of ignition and combustion in a burner main body, in which a gas mixture channel is formed by a guide plate disposed at the center of the burner main bodyburner bodyor stable mixing of gas and the primary air. | 11-25-2010 |
| 20110083618 | BURNER - A gas burner including a burner body having a lower housing, an inlet conduit and a combustion surface element attached to the lower housing. A diffuser/reflector positioned within the body encourages even distribution and mixing of a combustible gas/air mixture. The diffuser/reflector is preferably of a sheet metal construction and includes a plurality of stamped openings with each of these openings having an overhanging guide plate. The combustion surface element includes a plurality of integrally formed rigidizing ribs and is made from a high temperature steel alloy wire cloth. The inlet conduit is secured directly or indirectly to an access door/bulkhead that is used to close off an access opening formed in a water heater wall through which the burner is installed. In one construction, an air scoop shrouds the inlet conduit and at least partially defines a flow path of primary air, substantially isolated from the combustion chamber. | 04-14-2011 |
| 20110303164 | INTEGRATED CONTACT CONDENSING WATER HEATER - An apparatus for heating water having three vertically aligned water heating process sections. The upper section includes an annular water storage tank disposed around a combustion chamber having a downward firing burner. The intermediate section, disposed vertically below the upper section receives flue gas from the combustion chamber, which flue gas is cooled and dehumidified, producing a hot condensate which collects in a passive condensate flow control device disposed proximate the bottom of the intermediate section. The lower section, disposed vertically below the intermediate and separated therefrom by the passive condensate flow control device receives hot condensate from the flow control device, which is used to preheat and humidify air, such as room air, which is then recycled to the combustion process of the upper section for use as combustion air. This passive condensate flow control device uses gravity to inject condensate, thereby facilitating a system design that only requires a single condensate pump. | 12-15-2011 |
| 20120090561 | GAS WATER HEATER WITH WASTE GAS PURIFICATION AND FILTRATION FUNCTIONS - A gas water heater includes a gas water heater main unit having an exhaust pipe attached thereto for guiding out waste gas during burning of a fuel gas to heat water, an ozone generator installed in the exhaust pipe and electrically connected to an external power source for generating ozone into the exhaust pipe to mix with the waste gas produced during operation of the gas water heater main unit, and a gas filter installed in the exhaust pipe for removing solid matters from the waste gas passing through the exhaust pipe. | 04-19-2012 |
| 20120298053 | AIR:FLUID DISTRIBUTION SYSTEM AND METHOD - A valve assembly including a block forming a bore. An air inlet opening is in communication with the bore, and provides a volume of air into the bore. The bore provides communication between the air inlet opening and at least one air outlet passage. A fuel inlet opening is in communication with the bore, and provides a volume of fuel into the bore. The bore provides communication between the fuel inlet opening and at least one fuel outlet passage. A pintle is slidably positionable within the bore to control the volume of air directed out of the bore through the air outlet passage and the volume of fuel directed out of the bore through the fuel outlet passage. | 11-29-2012 |
| 20130074786 | GAS WATER HEATER WITH INCREASED THERMAL EFFICIENCY AND SAFETY - A gas water heater having increased thermal efficiency comprises a water tank having a sealed combustion chamber thereunder. An atmospheric burner is located in the combustion chamber. A flue pipe extends from the sealed combustion chamber and through the water tank for heat exchange of hot atmospheric gas therein with water in the water tank. A heat exchanger is in communication with the combustion gases exiting the water tank to extract residual heat from the combustion gas in the flue pipe for mixture with ambient air to produce pre-heated combustion air. An air convection or draft inducing device directs the hot combustion air from the heat exchanger through a sealed conduit to direct the pre-heated combustion air to the combustion chamber. | 03-28-2013 |
| 20130092104 | FAN HOUSING FOR A FAN FOR SUPPLYING A FUEL/OXIDIZER MIXTURE TO A BURNER, INSERT AND SUPPLY DEVICE THEREFOR - Fan housing for a fan for supplying a fuel/oxidizer mixture to a burner, comprising: a supply opening ( | 04-18-2013 |
| 20140007822 | MIXTURE SUPPLY SYSTEM FOR A HOT WATER APPLIANCE, A HOT WATER APPLIANCE COMPRISING SUCH A MIXTURE SUPPLY SYSTEM AND A METHOD FOR MIXING A FUEL AND AN OXIDIZER - The invention relates to a mixture supply system which is adapted for mounting in a hot water appliance and which is adapted to supply a combustible mixture to a burner of the hot water appliance, comprising a fuel feed for a fluid fuel, an oxidizer feed for a fluid oxidizer, a mixing chamber for mixing the fuel and the oxidizer in order to form the combustible mixture, a discharge for discharging the combustible mixture from the mixing chamber and a fan for urging the fuel and oxidizer from the respective feed to the mixing chamber, and urging the mixture therefrom to the discharge, wherein the fan is adapted to act directly on both the fuel and the oxidizer. The fan does not so much make use of an airflow with gas drawn in by a venturi, but gas is supplied separately to the fan. | 01-09-2014 |
| 20140345541 | Ultra Low NOx Burner Using Distributed Direct Fuel Injection - A burner box includes a housing, a fuel tube and a porous heat dissipating surface. The housing is bounded by a sidewall and has a top and an opposite bottom that are each open so that the sidewall defines an open passage that allows unimpeded vertical airflow. The fuel tube extends into the passage and defines a plurality of spaced apart orifices that distribute fuel into the open passage. The fuel tube is at a distance from the top of the housing so that substantially all of the fuel is entrained by the combustion air before the fuel reaches the top. The heat dissipating surface is disposed across the top of the housing and supports a flame. The heat dissipating surface includes enough open area so that the fuel/air mixture passes through the porous heat dissipating surface unimpeded. The heat dissipating surface dissipates heat from the flame and prevents flashback. | 11-27-2014 |
| 20150369475 | BURNER FOR BURNING FUEL AND A DEVICE COMPRISING SUCH A BURNER | 12-24-2015 |
| 20160123580 | GAS PREMIX BURNER - A gas premix burner including a perforated plate, a woven wire mesh or an expanded metal sheet; and a woven, knitted or braided burner deck having metal fibers supported by the perforated plate, woven wire mesh or expanded metal sheet. The woven, knitted or braided burner deck has at least a zone with a high density of at least 1250 g/dm | 05-05-2016 |
| 20160138826 | APPARATUSES AND METHODS FOR SUPPLYING NATURAL GAS TO A FRAC WATER HEATER - Apparatuses and methods for heating well fracturing fluid using natural gas supplied to a frac water heater are provided. In some embodiments, portable separators can be tied into an existing, on-site, natural gas source and supply the heating unit's burner system with the producer's own produced natural gas (for example, sweet fuel gas). By using on-site sweet fuel gas, liquefied petroleum gas (LPG) or diesel consumption and associated cartage costs can be reduced or eliminated. As such, the apparatuses and methods can also reduce the associated carbon footprint on the environment. In some embodiments, the apparatuses and methods can comprise a drying element to dry or condition the gas prior to use. | 05-19-2016 |
