| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 237019000 | COMBINED WITH WATER HEATER | 12 |
| 20080197205 | TANK-TANKLESS WATER HEATER - A tank-tankless water heater includes primary and secondary heat exchangers, and a combustor for the production of flue gases. In operation, water is first heated as the water and flue gases flow through primary heat exchanger. The water flows into the tank where it is stored and again heated as the flue gases flow through the secondary heat exchanger. A pump moves the water from the secondary heat exchanger, through the primary heat exchanger, and back to the secondary heat exchanger for storage as needed to maintain the stored water at a desired temperature. Water is drawn from the secondary heat exchanger during initial demand to provide a ready source of hot water, and the hot water supply is maintained by the primary heat exchanger during sustained hot water draws. The primary heat exchanger may include a temperature or temperature differential control system. | 08-21-2008 |
| 20080203179 | HOT WATER AND HEATING SYSTEM OPERATING ON THE BASIS OF RENEWABLE ENERGY CARRIERS - The invention relates to a hot water and heating system, which operates on the basis of renewable energy carriers. | 08-28-2008 |
| 20080265046 | TANKLESS WATER HEATER HOT WATER RETURN SYSTEM - A tankless return hot water return system to facilitate whole-house or whole-building hot water return recirculation used in conjunction with tankless water heaters. The system is designed to compensate for tankless head losses and to protect the tankless heat exchanger. The system has a hot water return by-pass for heat exchanger protection. The invention utilizes the tankless water heater as the heating source for the hot water return and eliminates the need and use of tank-type water heaters for tankless hot water return recirculation. The system is self-contained with built-in temperature sensing and does not require any auxiliary controls, sensors, switches, timing mechanisms or remote activation. The system is energy efficient and water conservative. | 10-30-2008 |
| 20090008465 | COMBINED HEATING/WARM WATER SYSTEM FOR MOBILE APPLICATIONS - Combined heating/warm water system ( | 01-08-2009 |
| 20090026281 | ENERGY CONSERVATION SYSTEM - A hot water circuit ( | 01-29-2009 |
| 20090078783 | SECONDARY HEATING AND COOLING SYSTEM - A heating and cooling system operates in a supplemental heating mode or a supplemental cooling mode. In supplemental heating mode, the system carries water from a hot water supply of the water heater to a heat exchanger within an air passage in the furnace to heat the building. In the supplemental cooling mode, the system carries cool water from a cool water storage tank to the heat exchanger within the furnace to assist in cooling the building. | 03-26-2009 |
| 20100187320 | METHODS AND SYSTEMS FOR RECOVERING AND REDISTRIBUTING HEAT - The disclosed system includes heat exchangers to recover and redistribute heat from and within a building heating and ventilation system and/or a steam system. Certain implementations of the system enable hybrid heating systems that merge existing combustion-based heating systems with systems that produce heat with electricity from renewable energy sources. Implementations of the disclosed system enable the conversation of energy and use of environmentally clean energy sources. In one illustrative implementation, heat is removed from an air conditioning system and redistributed into a steam generation system. | 07-29-2010 |
| 20130105589 | TANK-TANKLESS WATER HEATER | 05-02-2013 |
| 20150323199 | BOILER SYSTEM USING FUEL CELL - Disclosed is a boiler system using a fuel cell including a boiler installed in a home, a building, or the like, a fuel cell for generating electricity and reaction heat by electrochemical reaction between a fuel and oxygen, a storage tank for recovering and storing the reaction heat generated by the fuel cell with a fluid, a room heating line buried beneath a room floor of the home, the building, or the like, a warm water line connected to supply warm water to a washroom or a kitchen of the home or the building through the boiler or the storage tank when water is supplied thereto from the outside, and a suction and exhaust integrated pipe having at least two of at least one first exhaust line, at least one first suction line of the boiler, at least one second exhaust line, and at least one second suction line of the fuel cell connected thereto to be used in common. | 11-12-2015 |
| 20160178219 | COMBINED HOT WATER AND SPACE HEATING AND CONDITIONING SYSTEM INCLUDING HEAT PUMP | 06-23-2016 |
| 20160187026 | HEATER FOR INDOOR WARMING USING WASTE HEAT OF EXHAUST GAS - A fan heater for heating using exhaust waste heat, including: a natural exhaust tube discharging some exhaust gas from a water heater; a forced exhaust tube connected to the natural exhaust tube in a parallel structure, the remaining exhaust gas, excluding naturally discharged exhaust gas, flowing into the forced exhaust tube; a heat exchange device on the upper portion of the forced exhaust tube and supplied with high-temperature exhaust gas; a forced exhaust blower installed on the heat exchange device to draw exhaust gas from the forced exhaust tube and discharge it; a main unit having the heat exchange device embedded therein and having a circulation unit such that low-temperature indoor air circulates into the heat exchange device; a warm-air circulation blower supplying the indoor air towards the outer air circulation unit and circulating the low-temperature indoor air so the exhaust gas exchanges heat; and a control unit. | 06-30-2016 |
| 20170234550 | COMBINED HOT WATER AND AIR HEATING AND CONDITIONING SYSTEM INCLUDING HEAT PUMP | 08-17-2017 |
