Company D manufactures a wide range of commercial cooking equipment, mainly heating cookers. After a competitor released a new model of steam convection oven, the company conducted a comparative study with its own model. Mr. E from the Technology Department had this to say about the results:
"We were researching to develop a new model of oven that would become our main product in the future, but unfortunately we found that our own model had poor combustion efficiency. So our engineering department decided that we had to rethink the internal structure and come up with a new, unique structure to develop an oven that could compete with our competitors." (Mr. E)
Company D began working on developing a new model but immediately ran into a problem.
"The fan used in the combustion mechanism of the current model is a custom-made product. When we consulted with the partner company that we had previously outsourced production to about changing the specifications, they told us that it would be difficult to continue production. We took this opportunity to consider replacing the fan. In reviewing the internal structure for this development, we also set goals of making it smaller and lighter." (Mr. E)
Company D was selecting a fan for the development of a new model, but had difficulty finding one that met their requirements.
Under these circumstances, when Mr. E attended an exhibition, he stopped by SANYO DENKI CO., LTD. booth and consulted with the person in charge about his issues. After listening to Mr. E's issues in detail, the SANYO DENKI CO., LTD. person in charge proposed the "San Ace Blower."
"We searched for a fan that could be made smaller and lighter while still offering performance comparable to our current fans. However, the 9BM type blower proposed by SANYO DENKI CO., LTD. staff had high airflow and static pressure, and was just the right size, so we thought it would also be possible to make the fan smaller and lighter. We were also able to overcome issues such as heat resistance by reviewing the internal structure of the oven, which allowed us to fit a plastic fan." (Mr. E)
For more information on airflow and static pressure, see Knowledge Fan Basics: Fan Airflow and Static Pressure
Company D soon produced a prototype incorporating SANYO DENKI CO., LTD. 's "San Ace Blower." As per the initial goal, they were able to improve combustion efficiency while also making the oven smaller and lighter.
"PWM control function of the blower that was proposed was also a key point. This would allow us to adjust the air volume and improve combustion efficiency. In fact, we had never handled DC Cooling Fan before, so we lacked knowledge of PWM control circuits, but we consulted with SANYO DENKI CO., LTD. many times and, with their advice, we were able to successfully develop the PWM control circuit in-house." (Mr. E)
After conducting in-house verification, Company D decided to adopt the "San Ace Blower."
"This time, we boldly reviewed the internal structure and were able to develop a steam convection oven that can compete with our competitors. We are grateful to SANYO DENKI CO., LTD. for their speedy response from suggesting samples to providing technical support. In the future, we plan to install the same type of blower in other products as well, and increase the number of competitive products." (Mr. E)
For more information about blower fans, please also see "Features of Blower Fans."
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