Abstract:
A method and an apparatus for efficiently and stably producing ozone-water of an intermediate to high temperature by using a conductive diamond as an electrode material are provided. Purified water or tap water of an intermediate to high temperature is supplied from a temperature control unit (30) to an anode chamber (13) provided with an anode (3) in an electrolytic cell (1) wherein the anode (3) and a cathode (5) are so arranged as to sandwich a solid polymer film (7). When a DC current is conducted between the anode (3) and the cathode (5), ozone-water of an intermediate to high temperature is discharged from the outlet port (13b) of the anode chamber (13). When a conductive diamond having a porous or a mesh structure is employed as the anode (3) in such an ozone water production apparatus, degradation in ozone production capacity is suppressed even in a high temperature range and ozone water of an intermediate to high temperature can be produced efficiently and stably.
Abstract:
A discharge cell for use in an ozone generator includes first upper and lower electrodes (10) formed of flat rigid bodies, which are opposed with a pair of rigid spacers (20) placed between them to define a space. This space accommodates a dielectric unit having a rigid structure including a second electrode (32) sandwiched between two glass plates (31,31). A plurality of spacers (40,40,...) are inserted between the dielectric unit (30) and the first electrodes (10) so that the dielectric unit (30) can be held at a neutral position in the space to form a discharge gap (50) on each side. The discharge gap G can remain to be as narrow as less than 0.4 mm. The cell components and fastening mechanism are protected from damage.
Abstract:
In a closed ozone generator unit (2) oxygen gas is transformed into ozone gas by means of alternating current, the oxygen gas being substantially pressurized before entry into the unit (2). The unit is exposed to an external pressure substantially equal to or higher than the pressure of the oxygen gas.
Abstract:
An ozonizer has a flat plate-shaped low voltage electrode 7, a flat plate-shaped high voltage electrode 3 facing a main surface of the low voltage electrode 7. The ozonizer also has a flat plate-shaped dielectric 5 and a spacer for forming a discharge gap 6 of a thin thickness in a laminating direction provided between the low voltage electrode 7 and the high voltage electrode 3, a high voltage electrode cooling unit 2 for forming a cooling water passage 2c insulated from the high voltage electrode 3 inside the high voltage electrode 3. An alternating voltage is applied between the low voltage electrode 7 and the high voltage electrode 3 and a discharge is produced in the discharge gap 6 injected with oxygen gas to produce ozone gas.