Reference

26.10.2020

Koja Oy Fan Unit with Integrated Springs

Koja Oy is a family-owned company offering customers intelligent and energy efficient HVAC systems, air handling systems and industrial fan solutions. Labrys Oy presented the new InfiniSpring® solution to Koja Oy R&D Management. Antti Häyrynen from Koja Oy R&D Management saw the potential in the InfiniSpring® integration and a new fan unit design was targeted to utilize InfiniSpring®-springs.

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Test

24.09.2020

How to select InfiniSpring® for a fan?

The test case fan is equipped with a 2.2 kW electric motor, which is controlled via variable-frequency drive. The motor nominal speed is 1440 rpm. The fan is used in air handling units and typically equipped with rubber elements. In this article InfiniSpring®-springs are dimensioned below the fan.

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Test

14.09.2020

Which frequencies are harmful for fan installations and what is fan’s minimum operating frequency?

Test case fan is equipped with 3HS20 InfiniSpring®-springs and with a 2.2 kW electric motor, which is controlled via variable-frequency drive. Motor nominal speed is 1440 rpm. This article focuses on testing the fan with big unbalance to see which rigid body modes are harmful for the fan installation.

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Test

08.09.2020

How safe is the spring selection based only on the weight data of a fan?

The test case fan is equipped with 3HS20 InfiniSpring®-springs and a 2.2 kW electric motor, which is controlled via variable-frequency drive. The motor nominal speed is 1440 rpm. The fan is used in air handling units and typically equipped with rubber elements. This article focuses on validating InfiniSpring®-spring selection based on the fan weight data.

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