Improving the capacity of espresso machine using reverse engineering method and VDI 2221 method

Abstract

An espresso machine is used to extract coffee powder under high pressure. The machine works instantly as the coffee powder will be extracted through hot sprayed water. Small coffee shops who just started their business use simple machines with small capacities. In this research, the machine used is a small machine with a 1.7-liter water capacity. Through this research, the capacity will be increased, and the machine's efficiency will be improved so that small coffee shops can start their business with small capital but with maximal results. Reverse engineering is an analysis process of an existing product to be used as a reference for designing a new similar product but with improved advantages of the product. The research started with determining the topic and continued with a literature study, which will discuss and observe the work process. Reverse engineering is done by disassembling and reassembling the machine used for the benchmark, followed by modifying the machine to become a new prototype. After the modification, the machine will have higher efficiency. Previously the machine could only do eight repetitions; after the modification, it can do fourteen repetitions.