| RINNAI CORPORATION Patent applications |
| Patent application number | Title | Published |
|---|
| 20130112384 | HEAT EXCHANGER - Provided are a heat exchanger that does not impede downsizing and removes water in the heat absorbing pipe adequately with a simple configuration even when the reduction in diameter of the heat absorbing pipe is made. A heat exchanger | 05-09-2013 |
| 20120292543 | SOLENOID VALVE CONTROL DEVICE - Disclosed is a solenoid valve control device provided with: a first relay ( | 11-22-2012 |
| 20120046801 | HOT-WATER SUPPLY SYSTEM - Each of the water heaters | 02-23-2012 |
| 20110315091 | HOT-WATER SUPPLY SYSTEM - When a detection temperature by a hot-water tank thermister ( | 12-29-2011 |
| 20110303165 | HOT-WATER SUPPLY SYSTEM - When a detection temperature by a hot-water tank thermister ( | 12-15-2011 |
| 20110297139 | WARM AIR FURNACE - A drain pipe | 12-08-2011 |
| 20110296838 | HEAT SOURCE MACHINE - A heat source machine includes: a first emission amount calculation unit | 12-08-2011 |
| 20110290228 | WARM AIR FURNACE - A warm air furnace prevents household articles from freezing in the case where combustion is discontinued due to lack of gas during combustion operation when a house is emptied. The warm air furnace is equipped with a retry operation controller | 12-01-2011 |
| 20100135829 | AIR SUPPLY FAN DEVICE - An air supply fan device including: a fan casing disposed continuously to a combustion chamber containing a gas burner therein; an air supply fan contained inside of the fan casing, for supplying burning air to the gas burner; and a motor disposed outside of the fan casing, for rotating the air supply fan. The air supply fan device comprising: a ventilation hole formed by opening a fan casing constituting wall around a motor rotary shaft of the motor connected to the air supply fan; and a diaphragm valve body which is fixed to the ventilation hole and has a through hole, through which the motor rotary shaft is inserted, opened at the center thereof. The valve body being formed into a shape such that a gap is defined between the through hole and the motor rotary shaft when the inner pressure inside of the fan casing is negative during the rotation of the air supply fan while the gap is closed in tight contact of the peripheral edge of the through hole with the motor rotary shaft when the inner pressure inside of the combustion chamber or the fan casing is positive. | 06-03-2010 |
| 20100122668 | STORAGE TYPE WATER HEATER - A storage type water heater comprising: a stored hot water tank; a heating unit including a heat exchanger, a gas burner, and an air supply fan; a circulation pipe line; a circulating pump; a first temperature sensor for detecting an inlet side temperature T | 05-20-2010 |
| 20100096103 | HEAT EXCHANGER AND WATER HEATER INCLUDING THE SAME - There is provided a heat exchanger and a water heater having the heat exchanger including a uniform thickness of tin plating layer on the inner surface of a water feeding pipe. The heat exchanger H includes copper pipes | 04-22-2010 |
| 20100025487 | FORCED DRAFT DIRECT VENT TYPE ROOM HEATER - The room heater has, in an outer case | 02-04-2010 |
| 20100025485 | FORCED DRAFT DIRECT VENT TYPE ROOM HEATER - A vent hole | 02-04-2010 |
| 20090314275 | WARM AIR FURNACE - A warm air furnace capable of reliably carry out the fuel consumption conserving operation notwithstanding the condition such as the heating load is provided. The warm air furnace is equipped with an ecology operation setting unit | 12-24-2009 |
| 20090211334 | IMPERFECT COMBUSTION DETECTING DEVICE - An imperfect combustion detecting device includes a destructive current supplying means which supplies, under a condition that it is determined by a useful life determining means that a deterioration status corresponding value matches a use limit value, destructive current to a sensor in order to melt down a part of a circuit that configures the sensor. When it is determined that the sensor is no longer capable of performing a normal CO level detecting function, the sensor is destroyed to the extent rendering the CO level detecting function of the sensor lost to an unrecoverable level. | 08-27-2009 |
| 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 |
| 20090151654 | WATER HEATER - There is provided an indoor mounting water heater in which combustion exhaust gas is discharged to the outdoors via an exhaust duct, wherein a decrease in draft force caused when the number of burner groups to be burned is reduced by a capacity changeover mechanism to decrease the combustion capacity can be prevented, and the heat efficiency can be improved. An air supply chamber | 06-18-2009 |
| 20090139466 | HOT WATER APPARATUS - A hot water apparatus comprises a main body thereof connected to each of water distribution devices | 06-04-2009 |
