K Corporation, a manufacturer of housing equipment that focuses on new energy systems, is involved in home cogeneration systems.
Although the company's products have been well received in the market, the company has had trouble with systems it delivered in the past. Mr. E, a senior leader in the engineering department at Company K, looks back on the situation at the time as follows:
"At one point, we had a series of problems with the equipment we had installed suddenly stopping. After investigating, we found that most of the causes were due to fan failure. Since most home cogeneration systems are installed outdoors, a variety of environmental factors such as rain, snow, humidity, direct sunlight, and dust can cause fan failure."
Company K soon began developing an improved model. Mr. E realized that the equipment parts needed to be able to withstand the harsh outdoor environment, so he came up with a plan to improve durability. In particular, the fans needed to be waterproof and dustproof.
"We were not confident that moisture-proofing alone would be enough, so we decided that the improved model should use Splash Proof Fan. Considering the future spread of home cogeneration systems, there is no doubt that improving reliability is a top priority, so we quickly needed to find a fan with excellent durability." (Mr. E)
Mr. E, who had been gathering information to solve the problem, visited SANYO DENKI CO., LTD. 's booth at an exhibition and asked about the durability of the fan. After listening to his requirements in detail, the SANYO DENKI CO., LTD. representative suggested a "Splash Proof Fan" to Mr. E.
The first thing that caught Mr. E's attention was the high level of waterproofing. Live parts such as the windings and circuit boards are tightly coated with resin using a proprietary technology, ensuring waterproof and dustproofing with an IP68* rating.
*Protection class IP68: Dust-proof type: Rotating machine that can be used even in dusty conditions at all times / Submersible type: Rotating machine that can be used even when submerged in water at a specified pressure at all times
"I heard that the protection rating was certified after clearing the strict inspection standards of a third-party organization (TUV). In addition to this seal of approval, the fans are thoroughly checked for abnormal noises through a 100% inspection before being shipped, which shows that the utmost care is taken with quality control." (Mr. E)
Company K also requested that SANYO DENKI CO., LTD. provide a lifespan of 80,000 hours at an ambient temperature of 45°C, and was told that this condition could also be met.(*) Mr. E said, "I was convinced that there was nothing to be desired in terms of durability and reliability."
*Expected life: 60,000 hours at an ambient temperature of 60°C (indoor environment L10: survival rate 90%, rated voltage, continuous operation, free air condition)
Furthermore, the wide range of sizes and specifications available, as well as the extensive functionality of PWM control function, which allows for easy adjustment of airflow, all contributed to Mr. E's decision to adopt the product.
After conducting actual testing, Company K decided to adopt SANYO DENKI CO., LTD. 's "Splash Proof Fan."
SANYO DENKI CO., LTD. continued to support the product development by processing the connectors, changing the lead wire length, and attaching labels specified by Company K.
"We were extremely grateful for this kind of flexible customization. The response was quick and it also helped shorten the development lead time." (Mr. E)
Mr E then described his subsequent achievements as follows:
"With the new model, we have been able to improve the reliability of the equipment. Even now, after shipping 10,000 units, there have been zero cases of defects in the field. The number of cogeneration systems in use continues to increase steadily. We are very grateful to SANYO DENKI CO., LTD. not only for their appropriate proposals, but also for the various ongoing support they have provided even after the installation."
For more information about Splash Proof Fan, please also see "Features of Splash Proof Fan, Oil Proof Fan, Wide Temperature Range Fan, and G Proof Fan."
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