【应用】山洋电气带PWM调速功能的正反转风扇成功开发新型热交换新风系统，控制简单，实现小型化

时间： 2023-05-08 来源：SANYO DENKI官网

技术问答

为了防止建筑物的高度密封化、建材及室内装修使用的化学物质引起的“建筑物综合症”，住宅必须义务安装新风系统进行 24小时换气。其中，可再利用换气时排出的热量、节约冷暖气设备费用的新型热交换新风系统备受瞩目。

课题

为了满足市场对小型化的需求，要利用一台风扇进行吸气及排气。

无法保持吸排气量的平衡，热交换新风系统的蓄热效率不好。

要满足系统小型化的需求，但无法保持吸排气量的平衡…

住宅设备制造商C公司，致力于新型热交换新风系统的开发。C公司商品开发部的H先生说：“市场上，热交换新风系统的小型化及低成本化发展越来越快，为了顺应这种趋势，开始进行新机型的开发。现行系统中，分别装配了吸气及排气用的风扇。吸气用的风扇通过过滤网向室内供给洁净的空气，排气用的风扇将室内脏污的空气排到室外。研讨在新型热交换新风系统中只安装一台风扇（切换该风扇的风向），以此来实现系统小型化。”

H先生立即与风扇制造商进行了商谈，开始对样品进行测评。「H先生立即与风扇制造商进行了商谈，开始对样品进行测评。“尝试了在一台风扇上切换风向，但正转与反转的风量差异比预想大得多。热交换新风系统是通过其内部的储热元件保持温度，所以若吸气量与排气量不同，则温度的保持效率会下降。因此，为了保持吸排气的平衡，需精细地控制正转与反转的转速，苦思焦虑地在想控制方法。”（H先生）H先生的开发遇挫，需寻找解决课题的有效方案。

正反转实现相同的风量及静压！使用一台风扇即可吸气及排气

为了解决该课题，H先生参加工业技术类的活动时，在山洋电气的展位与担当进行了商谈。山洋电气的担当了解了H先生的课题后，提出了使用带 PWM 调速功能的“正反转风扇”的方案。H先生对该提案非常感兴趣。“给我们建议的风扇，扇叶及外框形状的最优化设计，使正反转的风量及静压基本相同。若使用该款风扇，则无需分别在正转时与反转时调整转速，所以控制非常简单。”（H先生）

热交换新风系统的新机型开发成功！实现了小型化及成本降低

H先生立即在公司内部进行了实机验证，确认结果是可保持吸排气量的平衡。公司内部测评的结果令人非常满意，不久后 C公司就正式采用“正反转风扇”，成功开发了新型热交换新风系统。“风扇数量从 2台减为 1台，不仅成功实现了热交换新风系统的小型化，客户也非常满意。此外，进行公司内部验证时，山洋电气建议我们在试作样机上使用BOX 型的PWM控制器，顺利完成风量测评。这次采用了最合适的风扇。我想今后会跟山洋电气有更多的商谈及合作。”（H先生）

解决方案・效果

采用了通过风向的切换可在一台风扇上进行吸排气的正反转风扇。

吸排气的风量及静压基本相同。

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描述- Products are made of high-quality materials and undergo rigorous quality assurance testing. They are designed and manufactured by experienced engineers and professionals to achieve high reliability.

型号- 9BFB 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选型指南 - SANYO DENKI - 23.5 PDF 英文下载

SANYO DENKI Develops 38 × 38 × 28mm DC Fan with the Highest Static Pressure and Airflow in the Industry

SANYO DENKI has developed and launched the 38 × 38 × 28 mm San Ace 38 9HVA type DC Fan that features the highest static pressure and airflow in the industry. It is ideal for high-density 1U servers, 1U switching power supplies, and communications equipment that require superior cooling performance.

产品发布时间 : 2024-10-10