Patent ID: 7614260
Filing Date: 2009-11-10
Classification: D06F

Abstract:
1. A system for controlling a supply of ozone supplied for laundering clothing, the system comprising at least one washing machine with an air supply device for supplying air to each washing machine; and each washing machine comprising: an internal drum for containing laundry and a quantity of a water; a sump located vertically below the washing machine, and the sump having a drain valve facilitating retention of the water supplied to the washing machine; at least one exhaust outlet being provided in the washing machine for exhausting gas from the washing machine; and an air flow control valve for regulating a flow rate of the air being supplied to the washing machine, and the air flow control valve being connected to an ozone generator for producing ozone from the air, and the ozone generator being connected with the sump to supply the produced ozone to the washing machine; an ozone exhaust sensor continuously sensing a level of ozone exhausting from the washing machine in the exhaust gas during operation thereof, the at least one sensor being located in the at least one exhaust outlet for detecting a concentration of ozone contained within the exhaust gas as the exhaust gas exits the at least one exhaust outlet, and a relay coupling the at least one sensor to the ozone generator for temporarily interrupting production of ozone by the ozone generator when the level of ozone exhausting from the washing machine in the exhaust gas exceeds about 0.1 parts per million until the ozone exhaust sensor again detects a level of ozone in the exhaust gas below about 0.1 parts per million of ozone, so that the ozone generator can again commence further production of ozone; an area ozone level sensor for detecting a level of the ozone contained within an area accommodating the at least one washing machine, and in an event that the area ozone level sensor detects the ozone level for the area to be above about 0.1 parts per million, the area ozone level sensor interrupts further production of ozone by each generator until the area ozone level sensor again detects a level of ozone below about 0.1 parts per million.