Abstract:
Typically, there is no air treatment system within the outdoor-hood which is used in food
store due to the fact that it would be a cause of the air pollution. For this reason, the idea to design a
new innovative outdoor-hood with electrostatic system is proposed in order to discompose smoke
from cooking. The principle behind electrostatic system is to separate particles into smaller
molecular by high voltage. The quality function deployment (QFD) technique is used to identify the
customer requirement and then the theory of fuzzy sets (FQFD) is applied consequently in order to
reduce ambiguity from the customer and development team perspectives in the evaluation process.
Questionnaire is initially used to gathering the customer requirements. The sample size is
100 roadside fast-food cookers using an outdoor-hood installation. Then FQFD is applied to convert
the customer requirements into engineering characteristics of the proposed product (phase1; product
planning). In phase 2; product design, the engineering characteristic properties are also transposed
to part characteristics of the proposed product. Membership function of triangular is investigated in
this study.
The results showed that the respondent ranked electricity saving as the highest importance
for electrostatic hood characteristics followed by safety and high performance on smoke detection.
As a result of FQFD phase 1 and 2, the top three important priorities are fan size, material in
producing frame and dust filter. Then the design of electrostatic hood was proposed corresponding
with customer requirements.