Gas heater

About: Gas heater is a research topic. Over the lifetime, 1799 publications have been published within this topic receiving 6169 citations.

Combustion detection apparatus with a thermoelectric generator

Abstract: The apparatus (1,1') for the detection of gas combustion in an domestic gas heater or a water heater is designed as an independent installation unit mounted on a shared support bracket (8,8'), provided with a thermoelectric generator assembly (4-6, 20-26) for supplying a safety valve (16) and a main gas valve (17) of the gas heater, generating two respective lower (Vb) and higher (Vd) voltages therefor. The thermoelectric assembly (4-6,20-26) heated by a pilot flame (3) is built up by means of one or two flat Peltier type p-n junction cells (4, 20-21), which are connected to a heat transmission element (5,25) licked by the pilot flame (3) and to a shared heat sink (6,22).

Device to mix gas and air for gas heater consists of swing valve in housing with gas feed channel, turned proportional with air flow volume

Abstract: The device has a burner using a gas-air-mixture. It consists of a swing valve (2) in a housing (1), which is held turnable at right angles to the air flow direction within the housing, and is turned proportional with air flow volume against the force of a return spring. The swing valve has a gas feed channel (3), which opens at the free end of the valve into the narrowest section of the air flow path (4) in the housing, and which is supplied with gas via the pivot bearing of the swing valve. The swing valve, a compensation valve (5), with pivot bearing and gas feed, are formed as a one-piece injection-molded part.

Apparatus for the treatment of textile webs

Abstract: The assembly to dry wet fabric goods has a transport system to carry the spread material through a housing fitted with jets to blow a heated gas on to the fabric. A fan generates a recirculating gas flow. The gas temperature is raised by an indirect heating unit (6) with a cross counter-flow recuperator (60). The cross counter-flow recuperator, for the indirect heating unit in a fabric goods drying assembly, has a combustion chamber linked to the recuperator through a distributor (63). The unit has heat transfer components as flat tube bundles, with the combustion chamber between the bundles and parallel to them. The system also has additional guides to direct the recirculating gas flow at least twice across the line of the heat transfer bundles. The bundles form at least two heat exchanger zones (64a, 64b) for the gas flows. The second zone (64b) is hotter than the first zone (64a). The distributor also forms a heat exchange zone for the gas to flow through. The combustion zone is linked to an external burner at one end, and to the recuperator at the other end through the distributor. The exhaust gas collection point (65) is at the end of the combustion zone away from the burner, with a secondary gas channel link to the burner. The indirect gas heater has a further fan (67) to extract the exhaust gas from the recuperator by suction, and impel it selectively towards the combustion chamber and/or the exhaust gas outflow. A control (69) determines the exhaust gas volume flow to the combustion chamber and the outlet. The burner has a flame tube extending into the combustion chamber. The exhaust gas returned to the combustion chamber by the fan is in a ring-shaped flow around the flame tube. The exhaust gas outflow section has a fresh air heater (70), as an initial heating stage for the fresh air fed into the assembly. The tube bundles can be around the combustion chamber. The combustion chamber and the recuperator are on straight line, parallel to each other.

Heat treatment furnace

Abstract: PROBLEM TO BE SOLVED: To provide a heat treatment furnace which can execute the heat treatment in a good energy efficiency and at a low cost. SOLUTION: A holding chamber 5 for holding a material to be treated, is arranged. Then, a hot blast generating chamber 1 freely generating the hot blast is arranged, and the hot blast generating chamber 1 and the holding chamber 5 are connected through a gas sucking passage 4 for supplying the hot blast generated in the hot blast generating chamber 1 into the holding chamber 5. A gas exhaust passage 8 for exhausting the hot blast passed through the holding chamber 5 from this chamber to the outside of the chamber, is arranged, and in the hot blast generating chamber 1, an electric heater 2 and a combustion type gas heater 3 are arranged. Further, a blasting means 6 for blasting the gas heated with at least one side of both heaters 2, 3 into the holding chamber 5 through the gas sucking passage 4, is arranged. An operating device 7 for freely operating to separately change into the working state and the work- stopping state to the electric heater 2 and the combustion type gas heater 3, is arranged.

Gas feeder for evaluation testing of fuel cell

Abstract: PROBLEM TO BE SOLVED: To enable to realize stable moisture control and a quick response and to operate with little energy. SOLUTION: As for the gas feeder for an evaluation test of a fuel cell with a humidification device, a dew point of gas to be supplied to the fuel cell can be altered arbitrarily. A flow amount control valve (3), a gas heater (4), a mixer (5), and a supply gas temperature adjusting device are arranged at a gas supply path (1) to the fuel cell in that order. An superheated steam generator (7) is communicated with and connected to the mixer (5) via a steam flow amount control valve (8). COPYRIGHT: (C)2004,JPO&NCIPI