GB390660A - Improvements in and relating to ozonisers - Google Patents

Abstract

<PICT:0390660/III/1> <PICT:0390660/III/2> <PICT:0390660/III/3> In an apparatus for the production of ozone, the electrode system is divided into two sections, having central channels 8<1>, 8<2> leading to a central collector and outlet pipe 9 for the ozone. Each section consists of alternate high and low pressure electrodes 4, 5, of the plate type, separated by glass dielectric sheets 6 between which is a passage 7 for the air to be treated, which passes radially from the periphery of the electrodes to the central passages 8<1>, 8<2>, being led in by pipe 19<1>. The electrodes consist of hollow bodies through which a cooling liquid such as water is circulated, and are suspended freely from bars 13, the ends of which bear on channel members on the upper part of the frame. The bars 13 are free to move, thus facilitating the easy removal and accurate spacing of the electrodes. Insulators 11 are inserted in the supports of the high-pressure electrodes. Each assembly of electrodes is pressed together by adjustable wedges 17<1>, 17<2>. The low-pressure electrodes are cooled by water flowing from the distributing pipe 25 through the pipe 27 and inlets 20 to the electrodes, then through outlets 21 and pipes 39 to the discharge pipe 61. A flow control device in the circuit consists of a glass cylinder 40<1> into which the water flows from pipe 61 through orifices 41<1>, 41<2>, 41<3>. A blade overflow, preferably of triangular cross section, may replace the orifices. The water from the cylinder discharges into the pipe 61<1>. The water cooling the high-pressure electrodes is fed from an insulated tank 31 through pipe 35 in a manner similar to that for the low-pressure electrodes. The tank is fed from a sprinkler 32 which is insulated from the high-pressure electrical circuit. The used water passes through a flow control device 40 and discharges through a sprinkler 43 into the lower tank 44. The upper tank 31 and the inlet and outlet pipes are insulated and connected to the high-pressure electrical circuit by the lead 50 to the transformer 2. Alternatively, the cooling water may be passed to the high- and low-pressure electrodes in series by a suitable modification of the connections to the electrodes. In the outlet pipe 9 for the ozonized air, a gauging apparatus 72 is connected by pipes 71<1>, 71<2>, between which is a diaphragm 73 in which bears a plate 76 with a central aperture 77 which is accurately gauged to set up pressure variations between the pipes 71<1>, 71<2>. The whole is mounted in a movable holder 70. This arrangement may be replaced by venturi tubes.