我们是强迫对流的忠实粉丝

风扇和鼓风机是空气冷却热管理解决方案中的关键工具。增加的流速增加了传热和耗散。

我们是强迫对流的忠实粉丝

In the thermal management industry, we are highly concerned with the convection type. Is itnatural or is it forced convection还在设计冷却解决方案方面，该问题的答案具有很大的不同。通过自然对流，我们使用浮力to do the lifting. Forced convection solutions get outside help to move fluid through a system. Many applications need to make the switch from a natural convection solution to a forced convection one when more heat transfer is required and adding surface area isn't an option. Adding more surface area can add more weight to a cooling solution or the extra surface area might choke flow produced from natural convection.

Up to Their Own Devices

For air cooling,风扇和鼓风机机械地穿过冷却溶液，如aheat sink，从而增加具有给定量的表面积的热传递量。所有这些设备都有不同的尺寸，性能和其他选项。在这篇文章中，我们将专注于空中强制对流和创造这些空气流的设备。

空中强迫对流：粉丝和鼓风机

What's the Difference Between a Fan and a Blower?

Both a fan and a blower have a motor with engineered blades that produce a pressure differential when spun. The pressure differential is what drives the air flow through the device. The difference between the fan or blower is the direction the air is expelled from the blade.Axial fans从其旋转轴的一端拉出空气，然后沿着该相同轴沿另一个方向施加空气。

鼓风机, also known as centrifugal fans, pull air from the axis of rotation. It can either be one side or both sides of the axis. So instead of pushing out along the axis, the air is directed outward, generally guided by a housing or case that points the air flow perpendicular to the axis of rotation.

Things to Consider When Using a Fan or Blower

表现

PQ curves, also known as pressure flow curves, characterize the performance of a fan or blower. The motor that drives the fan has a certain amount of speed and torque it can handle. A motor has only so much oomph to push air through the impeller blades. This relationship on how much air it can move at particular speed is depicted in the PQ curve for a fan or blower. If you try to exceed this curve, the motor will stall out and then you won't have any flow for your application. That leads to overheating and potential product failure.

球迷和鼓风机的入口保护（IP）等级

Since most fans used in thermal management applications are electric fans, environmental factors are an important consideration when picking out a fan. A common way to determine what sort of environment a fan can handle is by the Ingress Protection Rating, or IP Rating. The first number of the IP rating refers to the solid particle ingress and what size particle the device is protected against. The second number refers to the amount of liquid protection the device has from just little droplets to dunking the device in liquid.

用户将通过各种折磨将您的产品放在您的产品中。除非您的产品将在洁净室内过时，否则您的设备和风扇或鼓风机将体验灰尘。消费电子产品经历各种灰尘来源，从人类和宠物脱落到衣服和家具中的纤维。此外，同样的消费者容易发生他们的饮料，热和冷，在您的设备上。制造地板上的产品不仅会看到那些颗粒，而且还可以看到机器的油脂和污垢。关键是您的设备，以及您的粉丝和鼓风机必须设计和制作以处理您的用户将抛出任何内容。需要一些时间才能考虑在开始挑选风扇或鼓风机之前，您的用户将在您的产品中进行滥用。

风扇和鼓风机的可靠性

你的产品的寿命有多长？如果您的产品需要主动冷却，则需要在产品生命的整个过程中需要强大的风扇或鼓风机。指定将在产品的预期寿命之前磨损的风扇将缩短产品的可用性窗口，您可能会从不满意的客户获得一些短暂的回复。否则，您可能需要计划中生维护，您需要更换风扇以延长产品的使用寿命。在某些情况下，您的最终用户难以和不切实际。

风扇和鼓风机可靠性和寿命严重依赖于风扇或鼓风机使用的轴承类型。更便宜的风扇通常使用套筒轴承以支撑风扇框架内的风扇叶轮。使用滚珠轴承的粉丝随着时间的推移会穿得慢，给那些粉丝更长的一生。已知其他粉丝使用步枪轴承，液体轴承或甚至Maglev轴承，所有这些都具有增加风扇的整体寿命。在选择风扇或鼓风机的使用以及影响您的整体产品寿命的情况时要小心。

Fans and Blowers in Your Application

我们是一群强迫对流的粉丝和外流，所以我们很乐意帮助您升级您的自然对流解决方案。联系我们或者尝试压缩空气ring a natural convection and forced convection heat sink inGenie.

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