High efficiency convection ovens
High efficiency convection ovens
Spray Tech engineers and builds drying and curing ovens to provide excellent temperature uniformity around the part profile throughout the heating process for both liquid and powder curing applications. Any of the components and subassemblies used in our ovens are selected for NFPA compliance, quality and long life. All electrical and mechanical components are widely represented for local service and maintenance.
All oven panels, duct work and heater cabinets are designed by Spray Tech and manufactured in our factory. Typical oven configurations may include mechanical air seals, gravity seals, quiet entry zones and interior baffles to prevent air mixing near openings. IR pre-heat ovens may be used to gel over powder for applications involving high mass parts.
Oven Body Construction
- All oven panels are fabricated on Spray Tech’s own panel manufacturing line.
- Low heat transfer, 6” oven panels for minimal thermal heat loss and increased energy savings.
- Oven floor panels are designed to reduce heat sinking and cold spots and to allow maintenance foot traffic without deforming.
- Ovens are built in sections for shipping and reduced installation time.
- Painted ovens are sometimes provided for an aesthetically appealing appearance.
Oven Burner Systems
- Industry-best packaged burners with high turndown ratios are used for fast and efficient heating.
- Heater cabinets are made with lower gauge aluminized steel and a heavy -duty structural framework to accommodate the recirculating fan and drive.
- High density mineral wool is used in heater cabinet walls to compensate for higher interior operating temperatures.
Duct Work
- All sheet metal work is laser cut and precision made in our shop using computer aided manufacturing tools.
- Aluminized steel is used to prevent distortion due to heating effects and to resist premature corrosion.
- Nozzles are adjustable and fabricated to provide a wide range of air velocity into the oven zone.
- Supply nozzles allow for air flow adjustment, which is necessary for optimizing temperature uniformity.
- Return duct work provides precise control of air flow so that air may be directed where it is required for uniformity performance.
- Typical cure ovens are configured with
- Drying ovens are typically designed for high velocity delivery of air for fast and efficient drying.
- Full recirculating filtration may be included for applications demanding higher finish quality standards.
Oven Controls
- Oven control screens are accessible from the main system PLC and HMI and are designed to minimize the requirement for operator control.
- Ovens are managed locally through sophisticated PID controllers, designed to bring up and maintain oven temperature without overshoot.
- Oven bring up and shut down may be automated.
- Oven performance data may be stored and shared via internet connection.
- All ovens comply with NFPA regulations governing ovens and furnaces for safety, including automated purge, exhaust and explosion relief.
