Circuit for the recovery of solvent vapor evolved in the course of a cleaning cycle in dry-cleaning machines or plants, and for the de-pressurizing of such machines
First Claim
1. In dry-cleaning machines and/or plants including a cleaning circuit comprising a cleaning drum, a solvent tank, a solvent circulating pump and a filter for the solvent, all connected in series, and a drying and solvent recovery circuit comprising said drum, a circulating fan and a condenser connected in series, the vapor outlet of said condenser being connected through a heater to said drum and the liquid outlet of said condenser being connected through a separator to said tank, the improvement whereby solvent vapors evolved in the course of a cleaning cycle in such machines and/or plants are recovered and such machines and/or plants are depressurized, consisting essentially of:
- a solvent recovery filter, located at a level higher than the remainder of the machine and/or plant, said filter having an inlet directly connected with the highest point of said drying circuit, and an outlet leading directly to the atmosphere.
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Accused Products
Abstract
Recovery of solvent vapor in the course of the cleaning cycle in dry-cleaning machines and/or plants, which include a cleaning circuit, a drying circuit and a distillation circuit, in which low boiling-point solvents are utilized in particular, and simultaneous de-pressurization of such machines, inside of which, in the course of said dry-cleaning operation, a partial evaporation of the solvent occurs which results in the building-up of a given pressure, are accomplished by means of a filter, which whose inlet is directly connected with any point of the drying circuit, while its outlet is directly connected with the outside.
98 Citations
5 Claims
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1. In dry-cleaning machines and/or plants including a cleaning circuit comprising a cleaning drum, a solvent tank, a solvent circulating pump and a filter for the solvent, all connected in series, and a drying and solvent recovery circuit comprising said drum, a circulating fan and a condenser connected in series, the vapor outlet of said condenser being connected through a heater to said drum and the liquid outlet of said condenser being connected through a separator to said tank, the improvement whereby solvent vapors evolved in the course of a cleaning cycle in such machines and/or plants are recovered and such machines and/or plants are depressurized, consisting essentially of:
a solvent recovery filter, located at a level higher than the remainder of the machine and/or plant, said filter having an inlet directly connected with the highest point of said drying circuit, and an outlet leading directly to the atmosphere. - View Dependent Claims (2, 3, 4, 5)
Specification