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Apparatus for cleaning printed wiring boards and/or printed circuit boards after soldering thereof for removal of rosin soldering fluxes using terpene compounds. The apparatus includes three separate components, a first housing containing the terpene washing apparatus, a second housing containing a

Apparatus for cleaning printed wiring boards and/or printed circuit boards after soldering thereof for removal of rosin soldering fluxes using terpene compounds. The apparatus includes three separate components, a first housing containing the terpene washing apparatus, a second housing containing a water rinsing apparatus, and intermediate conveying means for transporting the devices from the first housing to the second housing. This intermediate conveying means should be disposed at an angle such that the end facing the second housing is disposed lower than the first end. Exhaust fans are provided for the first housing to prevent escape of terpene odors or vapors therefrom, while similar exhaust fans in the second housing prevent the escape of water vapor. Scrubbers are provided in the exhaust ducts from the first housing to prevent terpene compounds from escaping to the atmosphere. A flame detector prevents the introduction of boards having flames thereon or being overheated. A series of temperature controls prevent the terpene vapor temperature from rising above a predetermined value to prevent the vapors from igniting.

대표청구항 ▼

Apparatus for washing printed circuit boards with a terpene compound for removal of solder rosin fluxes, said apparatus comprising: a first housing for containing a bath comprising a terpene compound, said housing having an inlet and an outlet; first means for conveying printed circuit boards from s

Apparatus for washing printed circuit boards with a terpene compound for removal of solder rosin fluxes, said apparatus comprising: a first housing for containing a bath comprising a terpene compound, said housing having an inlet and an outlet; first means for conveying printed circuit boards from said inlet to said outlet through said first housing, said conveying means being adapted to receive printed circuit boards at said inlet from a soldering apparatus; means for spraying terpene compounds from said bath onto boards disposed on said first conveying means within said first housing, said spraying means spraying said boards with sufficient force and at a sufficient angle to permit the terpene compounds to flow in a narrow space between components and a surface of the board disposed therebeneath; temperature sensing means for preventing ignition of vapors within said first housing; a second housing having an entrance and an exit; means disposed adjacent said inlet and said outlet of said first housing for exhausting air from an interior of said first housing and for preventing the escape of vapors from said first housing; second means for conveying boards from said entrance to said exit of said second housing; means disposed in said second housing for rinsing terpene compounds from boards; means associated with said exhausting means for removing pollutants from gases from the interior of said first housing; means for preventing the escape of vapors from said second housing; and third means for conveying boards from said outlet of said first housing to said entrance of said second housing, said conveying means being disposed at an angle with respect to the horizontal wherein boards being conveyed from said outlet of said first housing to said entrance of said second housing move in a downwardly direction, said third conveying means being outside of said first housing and outside of said second housing and being unconnected to said first conveying means and said second conveying means.