GB287520A - Improvements in or relating to electric liquid heaters - Google Patents

Abstract

287,520. Schott, W. March 23, 1927, [Convention date]. Heating by elec tricity. - A flow heater comprises tubular heating body 1 housed in a meta: shell 3, a casing 6 surrounding t h e shell and subdivided by a cylindrical par. tition 5 and a tube 14 arranged inside the heating body, the tube being in heat conductive relation with a safety cut out. The heater is coupled to the water supply cock by means of a rubber sleeve 10 fitted to the vessel 6. Earthing is effected by a resilient tongue 11. A porcelain body 12 secrewed to the outlet 9 carries the partition 5 and a tube 13 which subdivides the tube 14. The diameter of the casing 6 is increased in the lower half. The inlet and outlet connections may be reversed. Heat conducting ribs 25 are provided on the tube 14. The heating body is covered with cement and surrounded by a sheet of mica 4 before insertion into the container 3. The latter is soldered at 7 to the vessel 6. The cut-out is situated in a chamber A and comprises a cartridge 26 provided with a fuse wire 27 and mounted in a holder 29 which screws into a bracket 20, bolted at one end to a member 21 secured to the tube 14 so that the bracket is in. heat conductive relation with the tube but electrically insulated therefrom.. The cartridge abuts a contact member 19 at one end. The cut-out is protected from radiant heat by an insulating layer 17 arranged between plates 16. The tubes 14, 13 may be replaced by a U tube.