Central heating system
Реферат: 1385412 Central heating systems ELECTROLUX AB 18 Aug 1972 [20 Aug 1971] 38653/72 Heading F4U An unpressurized central heating system, e.g. for a caravan, comprises radiators disposed at a lower level than a gas or oil-fired liquid heater which has a burner 24, Fig. 3, a flue 32 shrouded by a jacket 38 forming a boiler and a riser pipe 39 from which the heated water passes to an expansion vessel 40. The vessel 40, Fig. 4, comprises an upper air-cooled condenser portion 49 from which uncondensed steam is vented to atmosphere through a pipe 41 and a lower, liquid storage and vapour separator portion 44 to which the riser 39 and a down pipe 43 are connected. The upper section of the outer surface of the flue pipe has a portion 57 which is roughened or knurled to increase heat exchange at the upper portion of the boiler and cause steam bubbles to be emitted therefrom. A non- return valve may be disposed in the system and ambient air flows over the boiler, flue and expansion vessel from an opening 55 in the floor of the caravan to pass through an apertured and hinged wall 54 into the space to be heated.
Central heating system
Номер патента: EP3004747A1. Автор: Alistair SMIT. Владелец: Individual. Дата публикации: 2016-04-13.