Company B, which develops and manufactures various types of communication equipment, is developing a communication module that can be installed outdoors and is compatible with 5G. The company has run into several challenges. Director A of the Research and Development Department at Company B explains:
"The product under development is smaller than previous models, and because increased traffic processing will generate more heat, improving cooling performance was extremely important. Furthermore, because we envision it being installed outdoors, such as on the walls of buildings, it also needed to be waterproof and other environmentally resistant."
New challenges have also arisen due to the characteristics of 5G communications.
"Conventional 4G radio waves have a low frequency, can reach long distances, and tend to bend around buildings and other structures. On the other hand, 5G radio waves have a high frequency and tend to travel in a straight line, making them easily blocked by various objects. To solve this problem, we need to install many more base stations than ever before, which inevitably means that they will be installed close to people. As a result, the noise from cooling fans was also a major concern. In other words, we needed something that could withstand the environment and cool the high-temperature inside of the equipment while keeping noise levels lower than ever before."
Mr. A and his colleagues were looking for a high-performance cooling fan that could meet these requirements.
Mr. A, who was comparing fans from several companies on the Internet, noticed SANYO DENKI CO., LTD. products because of their high specifications, and contacted them through an agency. After listening carefully to Mr. A's issues, the SANYO DENKI CO., LTD. representative recommended the 9WPA type of "San Ace Splash Proof Fan," which has waterproof and dustproof performance with protection class IP68(*1) and has twice maximum airflow and four times maximum static pressure compared to the conventional 9WP type Splash Proof Fan (*2).
"It has IP68 waterproof and dustproof performance, and has impeccable specifications such as the industry's top (*3) high airflow and high static pressure. I was also attracted by PWM control function which allows for optimal operation with reduced noise." (Mr. A)
*1 Protection classes (IP codes) are defined in IEC (International Electrotechnical Commission) 60529.
IP68:
・No dust can enter the device.
・No harmful water intrusion even when submerged
*2 Our previous product was DC Cooling Fan 60 x 25 mm thick "San Ace 60" 9WP type (model number: 9WP0612G401, 9WP0624G401).
*3 As of April 14, 2020. As an axial DC fan of the same size. According to our research.
Mr. A was satisfied with these proposals. The SANYO DENKI CO., LTD. representative then offered further technical support.
"Because we didn't have an environment in which we could measure the noise level of the equipment, we sent a prototype of the equipment with a cooling fan built in to SANYO DENKI CO., LTD. 's Technology Center and had them measure it. This allowed us to confirm that the noise level was reduced by the PWM control of the San Ace Splash Proof Fan." (Mr. A)
Company B was satisfied with the measurement results of the prototype device and soon decided to adopt the "San Ace Splash Proof Fan" 9WPA type.
"Thanks to SANYO DENKI CO., LTD. 's technical support, we were able to achieve our development goals. We appreciate their proposals that took our needs into account. Furthermore, they also said they would be happy to discuss customization, such as adding connectors and tubes to the fan lead wires, so we would like to consult with them on other projects as well." (Mr. A)
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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