Combining quality function deployment and TRIZ to solve the drainer problems

Abstract

A drainer is a very common article in a bathroom or balcony. Wherever the weep hole exists, there is always a drainer. But, the general drainer cannot obstruct cockroaches and stench from the drain. TRIZ method was used to resign and improve the stench and cockroaches problem in this study. In order to solve previous problem, we use quality function deployment (QFD), tech/physical contradictions, and invention principles to find the key point problems and improve them. This study adds a light float in the drainer. When water pours into the drainer, the float in the drain will be opened by water buoyancy. Contrariwise, when water flows out, the float and drain close directly by gravity. Therefore, this drainer can effectively keep from insect pests and bad odor, no matter the water exist or not. © 2013 Springer Science+Business Media New York.