| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 122180400 | Water tube surrounded by burned fuel | 24 |
| 20120125269 | HEATER - A heater, comprising a fuel burner, a primary heat exchanger, and an enclosure around the fuel burner and primary heat exchanger and defining a gas flow path, wherein the enclosure further comprises a secondary heat exchanger and/or heat storage means. | 05-24-2012 |
| 20120174878 | GAS-FIRED WATER HEATER WITH AN EXHAUST ASSEMBLY - A gas-fired water heater including a storage tank, a combustion chamber, a burner for producing products of combustion, the burner positioned in the combustion chamber, a flue including a longitudinal axis, the flue extending from the combustion chamber through the storage tank, and an exhaust assembly positioned above the flue. The exhaust assembly includes a hood, a motor including a drive shaft, and a fan coupled to the drive shaft for rotation with the drive shaft about a rotational axis. The hood receives the products of combustion from the flue and directs the products of combustion at an acute angle toward the fan. The rotational axis is positioned at the acute angle relative to the longitudinal axis. | 07-12-2012 |
| 20130092105 | FLUE HAVING AN ADJUSTABLE FLUE GAS FLOW UNIT - Known chimneys or chimney furnaces use flue gas flow units for heating buildings, said devices having displaceable or fixed obstacles for deflecting flue gas for generating flue gas turbulence. The invention relates to a device and method for transferring heat through a flue gas discharge pipe ( | 04-18-2013 |
| 20130247844 | LOW NOX BURNER FOR A WATER HEATER - A method of assembling multiple low NO | 09-26-2013 |
| 20140014047 | CONTINUOUS FLOW WATER HEATER THAT MITIGATES THE EFFECT OF ALTITUDE - A continuous flow heater that mitigates the effect of altitude, characterized in that it consists of a combustion system with four mixers attached to a rectangular base into which the gas is injected and distributed through fifty small cavities is provided. The combustion system is attached to a heat transfer system. The continuous flow heater that mitigates the effect of altitude is suitable for altitudes greater than 2000 meters above the sea level without notable reductions in power or significant increases in polluting and toxic emissions. The combustion system has better air draft than conventional systems, enabling it to mitigate the reduction in the quantity of oxygen in the air at higher altitudes, improving the operation of the equipment compared to the operation of equipment already available on the market, and making a better use of non-renewable natural resources. | 01-16-2014 |
| 20140174382 | HEAT EXCHANGER AND WATER HEATER INCLUDING THE SAME - In a primary heat exchanger, a heat conduction pipe is arranged as one connected pipe in a lower stage and an upper stage in a manner extending back and forth through a plurality of fins. The heat conduction pipe is arranged such that a pitch between the heat conduction pipes in the upper stage is shorter than a pitch between the heat conduction pipes in the lower stage. In addition, the heat conduction pipe is arranged such that a position in a center of each heat conduction pipe in the upper stage in a second direction orthogonal to a first direction in which the heat conduction pipe extends and a position in a center of each heat conduction pipe in the lower stage in the second direction are displaced from each other. | 06-26-2014 |
| 20140190425 | HEAT EXCHANGER AND WATER HEATER - A fin includes a cut and raised slit and a cut and raised wall portion. The cut and raised slit is formed in a region adjacent to at least one through hole of a plurality of through holes in a first direction and has a tunnel-shaped hole extending in a second direction intersecting the first direction. The cut and raised wall portion is located in the second direction of the cut and raised slit, protrudes toward a main surface of the fin, and extends along the first direction. Thus, a heat exchanger and a water heater capable of sufficiently conducting an amount of heat of a combustion gas to a heat conduction pipe even in a blind spot of a flow of the combustion gas of the heat conduction pipe and suppressing noise can be realized. | 07-10-2014 |
| 20140326197 | COMBINED GAS-WATER TUBE HYBRID HEAT EXCHANGER - A heat exchanger having a cylindrical body comprising an upper section, a lower section, a side water jacket surrounding the upper and lower sections, a top water jacket disposed atop the upper section and a gas exhaust disposed below the lower section. A water cavity is disposed substantially in the lower section while a gas cavity having a burner is disposed substantially centrally within the gas cavity. A plurality of water tubes disposed in a ring formation, connect the water cavity through the gas cavity to the top water jacket and a plurality of gas tubes also disposed in ring formations, connect the gas cavity through the water cavity to the gas exhaust. At least one of the gas tubes ring has a diameter that is greater than that of the water tubes ring. | 11-06-2014 |
| 20140345542 | EXHAUST CASE AND COMBUSTION APPARATUS PROVIDED WITH THE SAME - An exhaust case having the first exhaust gas flow path for flowing combustion exhaust gas passing upward through a heat exchange, behind a water-shielding plate and for guiding the combustion exhaust gas onto the water-shielding plate toward an exhaust vent, and having the second exhaust gas flow path for flowing a part of combustion exhaust gas into a space between the water-shielding plate and a horizontal plate part and further into the exhaust vent. A ventilation hole is provided for an upright plate part extending from the rear end of the horizontal plate part in order to flow combustion exhaust gas into the space, and is provided in the substantially horizontal direction. Accordingly, the exhaust case is inhibited to become large scaled, and a superior exhaust noise-reduction effect, a suppression effect of combustion oscillation of the burner, and a waterproof performance are able to be achieved. | 11-27-2014 |
| 20150090200 | LOW-NOISE, GAS-TYPE, INSTANTANEOUS WATER HEATER - The invention relates to a low-noise gas instantaneous water heater, belonging to the technical field of gas appliances. The low-noise gas instantaneous water heater comprises a combustion device, a heat exchanger and a blower; wherein the combustion device, the heat exchanger and the blower are arranged such that a combustion flue gas is discharged after passing sequentially through the heat exchanger and the blower; the blower comprises a stepless speed regulating motor with a motor control panel and an impeller driven by the motor, and at least one thermal insulation device is arranged between the motor control panel and the combustion flue gas generated by the combustion device. The low-noise gas instantaneous water heater is capable of combining the advantages of an updraught structure and a stepless speed regulating blower, effectively solving the problem of loud noise in the operation process of the heater, and reaching the requirements of the constant temperature performance, exhaust gas indexes and reliability of the gas instantaneous water heater. | 04-02-2015 |
| 20150107535 | HEAT EXCHANGER, SET AND METHOD FOR FORMING THE SAME - Heat exchanger comprising a first heat exchanging body having a first end and an opposite second end, at least a flue gas channel and at least a water channel, a longitudinal direction of the first body extending between the first and second end thereof, and a second heat exchanging body, having a first end and an opposite second end, at least a flue gas channel and at least a water channel, a longitudinal direction of the second body extending between the first and second end thereof, wherein the first end of the second body is connected to the second end of the first body, wherein a burner chamber is provided at the first end of the first body. | 04-23-2015 |
| 20150292768 | HEAT EXCHANGER - A heat exchange system comprising a housing ( | 10-15-2015 |
| 20150338127 | COMBUSTION APPARATUS HAVING AIR INTAKE PREHEATER - The present invention relates to a combustion apparatus capable of reducing the combustion load of a burner and improving the combustion efficiency thereof. The combustion apparatus includes: a premixing chamber for premixing external air, introduced through an air supply inlet, with a combustion gas; a blower for supplying a mixed air premixed in the premixing chamber toward a burner; a combustion chamber for burning the mixed air by ignition of the burner; a heat exchanger for heat exchange with room heating water by using the combustion heat of the combustion chamber; an exhaust gas discharging part for discharging an exhaust gas having passed through the heat exchanger; and a duct through which the exhaust gas having passed through the exhaust gas discharging part is discharged outside, wherein the combustion apparatus includes an air intake preheater for heat exchange between the exhaust gas discharged to the duct through the exhaust gas discharging part and the air supplied to the premixing chamber through the air supply inlet, the air intake preheater including a channel-forming member in which a plurality of unit plates are stacked with a predetermined interval therebetween to form an exhaust gas channel and an air intake channel therein that are separated from each other, are adjacent to each other, and are alternately arranged. | 11-26-2015 |
| 20150338130 | HOT WATER SUPPLY DEVICE - A hot water supply device | 11-26-2015 |
| 20150345827 | HOT WATER TANK ATTACHED TO BOILER - Provided is a hot water tank attached to a boiler. Water flows along a buffer tank as well as a hot water coil by providing the buffer tank and the hot water coil in an outer tank. Heat source applies heat water between the outer tank and the buffer tank while flowing therebetween. A significant amount of hot water IS supplied, and the temperature variation of the hot water is reduced. | 12-03-2015 |
| 20150362211 | HIGH EFFICIENCY BOILER - A high efficiency compact boiler is disclosed which includes a burner configured to introduce combustion gases into an interior region of the boiler, a heat exchange tube made of a length of finned tubing in the form of a helical coil positioned within the interior region of the boiler such that combustion gases from the burner can flow from a region inside the helical coil to a region outside the helical coil, and a floating baffle configured to redirect the flow of combustion gases around the finned tubing as it passes from the region inside the helical coil to the region outside the helical coil, the baffle being positioned proximal adjacent turns of the helical coil and having a coiled configuration corresponding substantially to the helical coil. | 12-17-2015 |
| 20160010891 | Water Heater | 01-14-2016 |
| 20160018130 | FLUE HAVING AN ADJUSTABLE FLUE GAS FLOW UNIT - Known chimneys or chimney furnaces use flue gas flow units for heating buildings, said devices having displaceable or fixed obstacles for deflecting flue gas for generating flue gas turbulence. The invention relates to a device and method for transferring heat through a flue gas discharge pipe in which pivotal guide plates are inserted in the longitudinal direction of the pipe run, at which the flue gas flow is more or less deflected in a sinuous line as function of the pivot angle of the guide plates that can be adjusted during furnace operation. A fan can increase the flue gas flow. An optional furnace heat exchanger generates additional hot water as needed. The controller activates the actuators for the fan, guide plate pivot angle setting, and at least one circulating pump as a function of the prescribed controlled variables such as flue gas temperature, reservoir temperature, heat exchanger performance, or flue gas flow. | 01-21-2016 |
| 20160025373 | WATER HEATER - A water heater includes a burner of a premixed type, a heat exchanger, and a fan suctioning combustion gas and exhausting combustion gas to the outside. The burner includes a burner case partitioned into a combustion chamber and a gas introduction chamber by a partition plate and a plurality of combustion tubes arranged in the combustion chamber. An air supply opening for supplying air into the gas introduction chamber is provided in the burner case. The partition plate has a plurality of opening portions communicating with the inside of the combustion tubes and a plurality of through holes communicating with the outside of the combustion tubes within the combustion chamber. The air supply opening is constructed to have an opening area smaller than the total sum of the total of opening areas of the plurality of opening portions and the total of opening areas of the plurality of through holes. | 01-28-2016 |
| 20160025375 | WATER HEATER - A water heater of a latent heat recovery type adapted to an exhaust suction system includes a drainage water discharge path. The drainage water discharge path includes a drainage water tank having a water-seal mechanism, and the drainage water tank has a first chamber and a second chamber communicating with the first chamber through a hole. The second chamber is capable of storing drainage water up to a storage water plane located at a position higher than an upper end of the hole, and the first chamber senses a fluid level in the first chamber reaching a prescribed sensing plane. A height difference between the sensing plane in the first chamber and the storage water plane is greater than a height of a water head obtained by converting a difference between atmospheric pressure and a minimum pressure at the drainage water inlet to the water head. | 01-28-2016 |
| 20160025376 | WATER HEATER - A water heater includes a burner generating combustion gas, a heat exchanger heating water which flows through the inside, through heat exchange with combustion gas generated in the burner, a fan supplying air to the burner, and a housing storing these components. The water heater has a water entry portion in a top plate of the housing. A water supply pipe for supplying water to the inside of the heat exchanger is connected to the water entry portion. The water entry portion is arranged to be included, in a plane view, in at least one component constituting the heat exchanger and an exhaust path for combustion gas which has passed through the heat exchanger. The component is made of a material having corrosion resistance against drainage water resulting from condensation of combustion gas. | 01-28-2016 |
| 20160025377 | Water Heater - A water heater is provided that can suppress backflow (entry) of drainage water into a fan from downstream of the fan in a path of a flow of combustion gas. The fan includes a fan case, an impeller housed within the fan case, a drive source attached to the fan case so as to drive the impeller, and a rotation shaft connecting the impeller and the drive source. An exhaust connection portion has a connection portion case and is provided with an exhaust port for emitting combustion gas delivered from the fan to outside of the water heater. The exhaust connection portion also has a drainage water discharge portion for discharging drainage water accumulated downstream of the fan in the path of the flow of combustion gas. | 01-28-2016 |
| 20160069587 | FAN ASSEMBLY AND WATER HEATER - A fan assembly includes a fan and an emission connection portion. The fan includes a fan case having a first internal space, an impeller, and a rotation shaft. The emission connection portion includes a connection portion case having a second internal space and provided with an emission port for emitting gas sent from the fan to the outside of the fan assembly through the second internal space. In a plan view from a direction of axis of the rotation shaft, a tongue portion extending from one end toward the other end is located at a boundary between the first internal space and the second internal space, and the tongue portion is provided to extend to a position at least reaching a straight line connecting a center point of the emission port and a center of rotation of the rotation shaft to each other, from one end toward the other end. | 03-10-2016 |
| 20160169552 | FULLY-WETTED, REFRACTORY-FREE TUBELESS FLUID HEATING SYSTEM WITH NEGLIGIBLE THERMAL EXPANSION STRESS | 06-16-2016 |
