Published Online:February 2026
Product Name:The IUP Journal of Mechanical Engineering
Product Type:Article
Product Code:IJME040126
DOI:10.71329/IUPJMECH/2026.19.1.75-82
Author Name:Prem Kumar S and Sanjay S S
Availability:YES
Subject/Domain:Engineering
Download Format:PDF
Pages:75-82
The demand for efficient and hygienic dishwashing solutions in large-scale catering enterprises has driven the development of mechanized washing systems. This paper presents the design and performance evaluation of a conveyor-based plate washing machine and compares its effectiveness with conventional manual washing. The machine integrates a 12 V DC motor-driven chain conveyor, centrifugal pump, nozzles with 15° spray angles, and photoelectric sensors for automated operation, all controlled through a PLC system. The performance was assessed using washing cycle time and cleanliness index as primary parameters. The experimental trials revealed that the machine required only 15 seconds per plate, compared to 39.4 seconds for manual washing, indicating a 62% improvement in time efficiency. The labor requirements were also reduced, with only two operators needed for machine washing compared to three to five for manual washing, while eliminating direct human contact with cleaning agents. However, manual washing achieved a higher cleanliness index due to continuous human monitoring and immediate correction of impurities. The study demonstrates that the developed dishwasher offers substantial advantages in productivity, labor efficiency, and operator safety, making it suitable for large-scale catering applications. Future refinements in nozzle configuration and rinse cycles are recommended to further enhance cleaning quality.
Dishwashing is one of the most common daily household and institutional activities worldwide, essential for maintaining hygiene and preventing foodborne illnesses.