Patent ID: 7942344
Filing Date: 2011-05-17
Classification: B05B

Abstract:
1. A device to prevent the exsiccation of fluid products in a delivery head of a dispensing machine for said fluid products, wherein said delivery head is provided with one or more delivery nozzles, the device comprising: a ring-shaped element arranged substantially coaxial with said delivery head and shaped so as to define a ring-shaped chamber which extends around said delivery head, said ring-shaped chamber having a central hole which contains at least a portion of said delivery head; a ring-shaped passage between said ring-shaped chamber and a lower end of said delivery head, said ring-shaped passage surrounding a perimeter of said lower end of said delivery head, said ring-shaped passage providing air communication between said ring-shaped chamber and said lower end of said delivery head; a flow generation mechanism which is able to generate a flow of air mixed with steam or with at least a solvent; a conveying apparatus able to convey said flow into said ring-shaped chamber, said flow being further conveyed through said ring-shaped passage to said lower end of said delivery head, thereby creating in a zone underneath said delivery nozzles into which said fluid products are dispensed from said delivery nozzles, a determinate atmosphere, different from the atmosphere in the environment where said dispensing machine is to be found during use; detection sensors arranged in proximity with said delivery head and able to detect a temperature and a relative humidity or solvent content of said flow; and a regulation mechanism able to regulate the temperature and the relative humidity or solvent content of said flow according to the detected temperature and the detected relative humidity or solvent content in order to maintain the temperature and the relative humidity or solvent content of said flow within a set of pre-determined values.