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Passive Baffle System Using Two-Way Shape Memory Materials Disclosure Number: IPCOM000243996D
Publication Date: 2015-Nov-04
Document File: 3 page(s) / 113K

Publishing Venue

The Prior Art Database


Disclosed is a baffle device comprised of two-way shape memory materials that can passively change shape from nearby components that produce changes in heat from powering on and off. The baffles will then redirect airflow depending on which components are powered on and off.

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Passive Baffle System Using Two -

During certain cooling situations in a server environment, baffles are needed to redirect airflow to critical components or to reduce airflow recirculation in a server. This disclosure aids in redirecting airflow by incorporating passive baffles composed of two-way shape memory materials (SMM). The two-way SMM will change shape passively resulting from temperature changes in the system. An example of a two-way shape memory polymer (SMP) is shown in Figure 3 below.

-Way Shape Memory Materials

Way Shape Memory Materials

    This disclosure describes a method to using bi-directional shape memory materials to create a passive baffle system. The baffle would have two states, "open" and "closed." The mechanism to switch from open to closed would rely on the shape change reaction of the shape memory materials which would occur at a specific temperature. The core idea is to be able to redirect air to more sensitive components in a server when certain components are not being greatly utilized (running cool). The baffle would activate to close off airflow to the cool components and redirect it to more sensitive components.

    Figures 1 and 2 below illustrate airflow in the open and closed states of the passive baffle. The baffle is constructed out of the two-way shape memory material. The shape memory material can be constructed to have its two memory states separated by 90 degrees, which will


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allow for the open and closed states...