초록 ▼

An explosion-proof, pollution-free infrared dryer for concentrated vaporization and removal of combustible solvent from a newly coated product, such as a newly printed web of paper, having a pair of opposing infrared radiant heater or burner sources each contained within a combustion chamber having

An explosion-proof, pollution-free infrared dryer for concentrated vaporization and removal of combustible solvent from a newly coated product, such as a newly printed web of paper, having a pair of opposing infrared radiant heater or burner sources each contained within a combustion chamber having a radiation transmissive wall confronting the infrared source. A drying tunnel for surrounding and passing the newly coated product or web therethrough is located in the ambient room air space between the infrared sources. The drying tunnel preferably is made of radiation transmissive panels to permit irradiation by the infrared source upon the web while yet containing and concentrating the vaporized combustible solvent. A combustion inhibiting atmosphere (CIA) flows through the drying tunnel. The CIA cools the web and effectively removes the concentrated, vaporized combustible solvent from the drying tunnel away from the web and infrared sources preferably for reclamation in a CIA cooling and condensate collection system. Thereafter, the CIA may be recirculated within the drying tunnel. The infrared dryer is appropriately provided with a hot air impact preheater for passing the web therethrough before its entrance into the drying tunnel. The preheater vaporizes a portion of the combustible solvent and improves the infrared absorption of the web as it next travels into the drying tunnel. The preheater may be efficiciently supplied with hot air from a heat exchanger receiving hot exchaust gases from the infrared heater sources.

대표청구항 ▼

An explosion-proof, pollution-free infrared dryer for concentrated vaporization and removal of a combustible solvent from a newly coated product, comprising: (a) a source of infrared radiation for vaporizing the combustible solvent from the product; (b) a drying tunnel for surrounding and passing th

An explosion-proof, pollution-free infrared dryer for concentrated vaporization and removal of a combustible solvent from a newly coated product, comprising: (a) a source of infrared radiation for vaporizing the combustible solvent from the product; (b) a drying tunnel for surrounding and passing the product therethrough and having a radiation transmissive panel spaced from the source of infrared radiation and containing the combustible solvent vaporized by the infrared radiation applied through the panel and on to the product; and (c) means producing a flow of combustion inhibiting atmosphere through the drying tunnel for mixing with the vaporized solvent to prevent ignition thereof and to carry the solvent from the drying tunnel away from the product and infrared source.