JP2008253469A5 - - Google Patents

Claims (6)

In a dry cleaning device that performs washing using a solvent to which soap is added
a) a soap concentration detecting means disposed in a flow path through which the solvent flows, having a pair of electrodes, and detecting a soap concentration in the solvent by detecting electrical conductivity of the solvent;
b) Solvent removal means for removing the solvent from the flow path at least where the soap concentration detection means is disposed so that the electrode of the soap concentration detection means is exposed to the air;
c) When the electrode of the soap concentration detecting means is exposed to the air by removing the solvent by the solvent removing means, the electric conductivity is detected by the soap concentration detecting means, and the electrode is detected according to the detection result. An anomaly detection means for detecting the presence of foreign matter between,
A dry cleaning apparatus comprising: A solvent supply flow path for supplying the solvent sucked by the pump from the solvent tank to the washing room through the liquid supply line, and the solvent sucked by the pump from the solvent tank through the return line via the solvent purification means. A solvent circulation path to be circulated in the tank is formed so as to be switchable by switching between opening and closing of a liquid supply valve disposed in the liquid supply line and a circulation valve disposed in the return line, The soap concentration detection means is disposed in a flow path sandwiched between the pump, the liquid supply valve, and the circulation valve, and the solvent exclusion means stops the operation of the pump and also supplies the liquid supply valve and / or the 2. The dry cleaning apparatus according to claim 1, wherein the dry cleaning apparatus is a control means for controlling the circulation valves so as to open them.   Following the washing operation in which a drum for storing laundry is provided in the laundry room, the solvent is supplied to the laundry room by the solvent supply flow path, and the drum is rotated at a low speed, the flow path is changed to the solvent circulation flow path. A dry cleaning apparatus that performs a liquid removal operation by switching and rotating the drum at a high speed, wherein the abnormality detection means detects an abnormality of the soap concentration detection means during the execution of the liquid removal operation. The dry cleaning apparatus according to claim 2.   4. The dry cleaning apparatus according to claim 3, wherein abnormality detection is performed by the abnormality detection unit after substantial liquid removal is completed during execution of the liquid removal operation. The dry cleaning apparatus according to claim 1, further comprising an abnormality notifying unit that notifies an abnormality when the presence of a foreign substance between the electrodes is detected by the abnormality detecting unit.   The dry cleaning apparatus according to claim 1, further comprising an operation control unit that terminates the operation when the abnormality detection unit detects the presence of a foreign substance between the electrodes.