Adhesive Layered Backflow Preventer for Data Center Cooling
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Solution Overview
Problem
Rack-mounted data storage systems face backflow air loss due to recirculation of air within the system, which compromises cooling efficiency and can lead to premature device failure, and existing backflow preventers often use costly materials like injection molded plastic and metal components that can further hinder airflow.
Innovation Solution
An adhesive layered backflow preventer is introduced, comprising a laminate structure with hinged backflow flaps made from alternating layers of plastic and adhesive, eliminating the need for costly molded parts and metal components, allowing airflow in one direction while preventing backflow through the use of a series of two-dimensional profiles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional injection molded plastic and metal components are used for backflow preventers, then structural strength and durability are improved, but cost increases and airflow resistance worsens
Solution Approach 1:
The patent uses flexible adhesive layers (such as acrylic, silicone, or rubber-based adhesives) as thin films to create the backflow preventer structure. These flexible adhesive layers replace traditional rigid injection molded plastic parts and metal components, maintaining structural integrity while eliminating the need for costly molded parts and metal fasteners. The flexible nature of the adhesive layers allows them to function as both structural elements and sealing components.
Solution Approach 2:
The backflow preventer is constructed as a composite laminate structure consisting of alternating layers of plastic substrates and adhesive layers. This composite construction combines the structural properties of plastic with the flexible sealing properties of adhesives, creating a unified component that replaces traditional multi-part assemblies of molded plastic and metal. The composite structure achieves both strength and flexibility without requiring additional metal fasteners or complex molding operations.
2Strength
If traditional injection molded plastic and metal components are used for backflow preventers, then structural strength and durability are improved, but device complexity increases
Solution Approach 1:
The patent merges multiple traditional components (molded plastic housing, metal fasteners, sealing elements) into a single integrated laminate structure. The alternating layers of plastic and adhesive are bonded together to form a unified backflow preventer assembly that performs both structural support and sealing functions simultaneously. This consolidation eliminates the need for separate molded parts and metal fasteners, significantly reducing device complexity.
Solution Approach 2:
The flexible adhesive layers serve dual purposes as both bonding agents and structural components. Instead of using rigid molded plastic parts connected by metal fasteners, the flexible adhesive layers create a continuous, integrated structure that is both simpler to manufacture and equally effective at preventing backflow. The thin film nature of the adhesives allows for a more streamlined design with fewer discrete parts.
3Stability of the object's composition
If heavy molded parts and metal components are used, then structural stability is improved, but airflow efficiency worsens
Solution Approach 1:
The flexible adhesive layers create a lightweight laminate structure that presents minimal resistance to airflow. Unlike heavy molded plastic parts and metal components, the thin adhesive films allow air to pass through with minimal turbulence and pressure loss. The flexibility of the adhesive layers enables them to conform to the fan housing contours without creating protrusions that would disrupt airflow patterns.
Solution Approach 2:
The composite laminate structure of alternating plastic and adhesive layers creates a lightweight assembly that maintains structural stability while minimizing airflow resistance. The plastic layers provide rigidity and shape, while the thin adhesive layers provide bonding and flexibility with minimal mass. This composite construction achieves the necessary structural stability without the weight and bulk of traditional molded parts and metal fasteners, thereby preserving airflow efficiency.
4Reliability
If backflow preventers are installed to prevent recirculation, then cooling efficiency is improved, but fan pressure requirements increase
Solution Approach 1:
The flexible adhesive layers create a compliant backflow preventer structure that flexes with airflow pressure rather than rigidly blocking it. This flexibility allows the preventer to accommodate pressure variations without creating excessive backpressure on the fan. The thin film structure offers minimal resistance to forward airflow while effectively blocking reverse flow, maintaining cooling efficiency without significantly increasing fan pressure requirements.
Solution Approach 2:
The composite laminate structure combines the rigidity of plastic layers with the flexibility of adhesive layers to create a backflow preventer that effectively blocks recirculation while minimizing pressure drop. The alternating layers create a multi-functional structure that provides both structural support and flexible sealing, preventing backflow without creating excessive resistance to forward airflow. This balanced design maintains reliable cooling efficiency without unduly increasing fan pressure requirements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The adhesive layered backflow preventer effectively inhibits backflow air loss, maintaining efficient airflow and reducing the risk of device failure by using a lightweight, cost-effective design that does not compromise fan pressure.
Implementation Method 1
The backflow preventer includes a plurality of layers comprising a front support layer, a first adhesive layer adhered to a distal side of the front support layer, a backflow flap layer adhered to a distal side of the first adhesive layer, a second adhesive layer adhered to a distal side of the backflow flap layer, and a rear support layer adhered to a distal side of the second adhesive layer
Implementation Method 2
The backflow preventer is hinged to rotate in a single direction responsive to a direction of cooling airflow from a corresponding fan
Data Source
AI summary
An adhesive layered backflow preventer laminate, for use in impeding airflow from flowing in a backflow direction through the backflow preventer and a corresponding cooling fan, includes a thin front support layer adhered to a thin backflow flap layer, having a plurality of backflow flaps, which is adhered to a thin rear support layer. Each of the structural layers is adhered to the adjacent structural layer using a respective double-sided adhesive layer, by way of a manufacturing process that avoids the use of costly injection molded parts and machined plastic parts and metal components such as springs and hinges.