| 摘要 |
An electric boiler comprising a plurality of boiling tubes (11) extending substantially vertically for providing heat to a heat exchanger, a core consisting of a multiplicity of heat storing bricks (30, 35), and an insulated casing surrounding the core, the casing having an openable front face to allow installation of the core and access thereto, bricks which lie, in use, against the boiling tubes (11) having side face profiles formed to provide channels for accepting part of the boiling tube (11) whereby a combination of such bricks surrounds a length of boiling tubes, the width of said bricks being such that, when the boiling tubes are surrounded by a course of said bricks lying adjacent the boiling tubes, space when viewed from the front is provided between the bricks and the casing, and between the bricks surrounding adjacent boiling tubes (11), whereby that space can be filled by sliding further bricks (30, 35) in a front to back direction with respect to the boiler. The bricks in an assembled core define channels (32, 36) extending from front to rear of the boiler for receiving heating elements (40), the heating elements being elongate and located in the core by sliding into the channels (32, 36) from the front of the core. An advantage of the invention is that the boiler may be quickly and easily installed. Further, if a heating element were to fail in service, it may be readily removed and replaced. |
