Combining Quality Function Deployment and TRIZ to Solve the Drainer Problems
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 an
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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. Keyword Quality function deployment • Tech/physical contradictions • Invention principles
1 Introduction The main function of a drainer is to drain off water. However, the long-term use of water pipes or the connection and integration of drainage pipes of the apartment buildings can easily result in odors and the breeding of mosquitoes, cockroaches, and moldy gases, having a considerable adverse impact on environment quality. In response to the above mentioned needs and problems, types of drainers have been developed and marketed as briefly summarized as below: 1. The traditional water trap drainer: The disadvantage is that the water in the trap will dry if the drainage hole has not drained off water for a long time. As a result,
C.-P. Chang (*) • Y.-H. Lin Department of Industrial Engineering and Management, National Chin-Yi University of Technology, Taichung, Taiwan, R.O.C. J. Juang and Y.-C. Huang (eds.), Intelligent Technologies and Engineering Systems, Lecture Notes in Electrical Engineering 234, DOI 10.1007/978-1-4614-6747-2_95, # Springer Science+Business Media New York 2013
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the pest control and deodorant functions will be gone. Therefore, this type of drainer is not suitable for being installed in holes that do not drain off water frequently. 2. The manual-type drainer: The opening and closing of the drainer is manually adjusted and its disadvantages are: (a) Manual (b) Completely unable to block odors, which may also come in if it is left open unintentionally (c) Requiring regular cleaning as there may be scaling between two layers of iron pieces 3. Water falling-type drainer (spring door): By using the gravity, it will open if the weight of the water has reached the threshold level. It closes when there is no water flow and thus it can effectively prevent odors and pests. The disadvantages are that the water flow will be very slow and it requires regular cleaning. Hence, it is suitable for places of little drainage. Moreover, although the pest control effects are very good, it cannot prevent odors as it is contained by spring and rubber. The elasticity of rubber and spring will lose to create gaps. As a result, the odors will come out. 4. Water seal-type drainer: Wa
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