120results about "Drum steam boilers" patented technology

An evaporator including a lower drum, an upper drum, and at least one tube extending between the lower drum and the upper drum. The plurality of tubes have fluid passageways therein extending from the lower drum to the upper drum. A duct is provided having a heating gas passageway provided therein. The at least one tube extends through the heating gas passageway. The fluid passageways define an overall flow path from the lower drum to the upper drum extending in a direction substantially counter-current to an overall flow path defined by the heating gas passageway extending from a gas inlet of the heating gas passageway to a gas outlet thereof.

A preferred embodiment supplemental heating system is fluidly connectable to a vehicle cooling system and includes a liquid heat generator operable for heating a cooling fluid delivered to the supplemental heating system from the vehicle's cooling system. The liquid heat generator includes a discharge passage connectable to a heater core of the vehicle and a inlet passage connectable to the vehicle's cooling system. The supplemental heating system further includes a control valve having an inlet connectable to an exit passage of a heater core of the vehicle, a discharge passage fluidly connected to the liquid heat generator, and a second discharge passage connectable to the vehicle's cooling system. The control valve is operable for controlling the proportion of cooling fluid exiting the heater core that is returned to the vehicle's cooling system and recirculated back to the liquid heat generator.

The objective of the present invention is to provide a hot water-centered hot water and heating combination boiler, in which heat exchange for a hot water supply is performed in a main heat exchanger and heat exchange for a heating water supply is performed in an auxiliary heat exchanger so that the hot water supply can be accelerated, energy can be saved, and the temperature of the hot water can be controlled with ease. To achieve the abovementioned objective, the boiler of the present invention includes: a cold water inflow tube through which cold water flows in; a main heat exchanger which heats the cold water flowing in through the cold water inflow tube by using the combustion heat of a burner; a hot water discharge tube which discharges the hot water heated in the main heat exchanger; an auxiliary heat exchanger which supplies heating water during a heating mode, in which heating consumption place, and causes heat exchange to occur between the heated water in the main heat exchanger and the lowered temperature returning water, in which the heating consumption place; and a control part which controls the combustion of the burner during a hot water mode and heating mode.

An on-line method and a device for cleaning of contamination such as caking or slag deposits from surfaces in vessels and combustion installations by means of blasting technology. An explosive gas mixture is made to detonate in the proximity of the deposits and thereby clean the deposits from the surfaces.

A gas-fired burner apparatus includes a porous combustion surface disposed in a combustion chamber substantially sealed to prevent entry of secondary air. A subatmospheric pressure is maintained in the combustion chamber by a natural or aspirated draft. The subatmospheric pressure cooperates with an aspirating flow of fuel to the burner apparatus to provide an increased flow of primary combustion air which reduces the combustion temperature and the emission of pollutants. Alternatively, the subatmospheric pressure may be used to achieve a given flow of primary combustion air with a reduced combustion surface area. Water heater and room heater applications of the burner apparatus are illustrated.

The present invention provides a water supply tank unit which can treat water that has leaked when a water supply tank is pulled out so that it does not remain. In the invention, a water supply tank unit which is attached to a high-frequency heating apparatus with a steam generating function and holds a water supply tank detachably, said tank unit comprises: a water supply tank 17 having a water supply port 55 on its side surface; a tank case door member 31 for supporting the water supply tank 17, which has a water inlet 59 connected to the water supply port 55 with an inserting operation of the water supply tank 17, and a scupper 60 formed around an elastic fitting piece by perforating a bottom part near the water inlet 59; and a sponge provided below the scupper 60.

Disclosed herein are storage type water heaters having means for improved mixing of cold water supply with water stored in the water tank of a water heater, means for limiting surges of water into and out of a water tank, and means for disrupting formation and propagation of convection currents and water streamers in a water tank.

A shield for a combustion chamber of a hot water heater is described. The combustion chamber is a sealed or not combustion chamber and the metal heat shield encircles and is spaced about the burner and pilot which is located in the combustion chamber. The shield is also spaced from the skirt and a bottom wall of the combustion chamber. The shield is further provided with apertures to permit passage of air supplied by an air supply duct. The shield provides for heat concentration on a lower heat transfer wall of the inner casing containing the water to be heated. The shield also reduces heat loss through the skirt and the bottom end wall of the combustion housing.

A method and steam generator includes a steam generator container having a heated wall surface, an inlet for a liquid and an outlet for removing the vaporized liquid or steam, a rotor, which is mounted for rotation in the container and causes a rotational flow of the liquid outwardly against the heated wall to cause vaporization. During rotation of the rotor, outer edges of the blades of the rotor contact the wall surface to either abrade or wipe deposits, such as lime, from the wall surface.

An apparatus (10) for transferring heat to a fluid from combustion gases including a housing (12) extending between a first end (14) and a second end (16). The apparatus further includes a burner (24) in which a combustible gas and oxygen react to form hot combustion gases which flow from the burner to a gas outlet (28) in the second end. The fluid flows in a length of helically coiled tubing (30) extending the length of the housing. The tubing includes a fin portion (36) which is spirally wound about the length of tubing. The apparatus further includes a core member (40) which extends within the coils of the tubing, and which engages the tubing. The core member includes a spirally-wound threaded area (62) about which the tubing is wrapped. The core member further includes a recessed portion (66) which creates stagnant air pocket adjacent the end of the core member. In operation the combustion gases leaving the burner are prevented from being short circuited and are directed into the tubing by the core member. The combustion gases are routed by the fin portion along a helical flow path throughout the length of the core member. The combustion gases are transferred into contact with the core member every revolution around the tubing. The recessed portion reduces the heat transfer between the core member and the exiting combustive gases.