The vibration isolation platform utilizes InfiniSpring steel spring isolators. The steel spring isolators are laser cut sheet metal components. Steel spring design is unique and offers new design possibilities. In the developed vibration isolation platform separate InfiniSpring-springs were used. In this case the dryer was sitting on top of the washing machine and the vibration isolation platform was dimensioned below the units. Washing machine weight was estimated to be around 70 kg, drier weight 52 kg and laundry weight 11 kg. Total weight being 70 + 52 + 11kg = 133 kg. InfiniSpring 4HS35 spring is for a load range of 25-35 kg. Five 4HS35 springs were chosen to be installed below the units and five springs are for a load range of 125 kg -175 kg. Two 60 cm x 60 cm x 2,7 cm plywood boards were connected using the springs to build the vibration isolation platform. Lower plywood was equipped with adjustment feet to align the vibration isolation platform.

In this case the washing machine vibration and noise transmission to the surroundings is greatly reduced with the vibration isolation platform manufactured using the plywood boards. Vibration isolation platform is light weight and allows easy alignment in the bathrooms. There is also no need to align the washing machine as the platform will take care of the alignment. Please see the vibration isolation platform pictures below describing the assembly.

Step 1: Install adjustment feet to lower plywood

Step 2: Align the lower plywood to washing machine location using the adjustment feet, picture below.

Step 3: Adjust offset between the lower and upper plywood by using e.g. laths above the lower plywood, picture below. Please also see the laths in Step 4 between the lower and upper plywood before spring installation.

Step 4: Calculate and mark the spring locations symmetrically around the center of gravity (washing machine depth direction), picture below.

Calculation:

• Plywood depth is 60 cm
• One spring is installed to the front in this case (spring on the right in below picture), spring location is 30 cm from the middle
• Two springs are installed 50 cm from the front, spring locations are 20 cm from the middle
• Remaining two springs can be calculated from the middle: 20 cm + 20 cm = 30 cm + X + X, X = 5 cm and springs are installed 5 cm from the middle

Step 5: Install the springs using recommended Datasheet wood screws and washers, picture below.

Step 6: Install vibration isolation platform below the washing machine, finalized vibration isolation platform shown in picture below.

Step 7: Washing machine is ready for operation, picture below.

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Figure 1. InfiniSpring® – air conditioner wooden support bracket

Outdoor unit weight is concentrated on the compressor side where pipe connections locate. Therefore, two sets of springs are installed on the compressor side and one set on the other. Figure 2 below shows the spring isolators at both sides of the outdoor unit.

Figure 2. Left: “Light end” side, Right: Compressor side springs

During the cold weather the outdoor unit will defrost ice, and this causes water to drain below the outdoor unit. It is recommended not to let the water to drain near the house. Therefore, it is good to fit a plastic tub below the outdoor unit, which can be emptied away from the house. Figure 3 below shows the final installation for the outdoor unit with a 90 liter plastic tub.

Figure 3. InfiniSpring® – air conditioner support bracket with the outdoor unit

One additional recommendation is to install the piping flexibly and this is achieved by using 360° loop at the outdoor unit piping. Figure 4 below shows the piping loop. With this arrangement the vibration isolation performance can be guaranteed as the piping also allows needed flexibility for the springs.

Figure 4. 360° loop on the pipes to allow flexibility

Air conditioning units are not always an attractive addition to a building and many owners want to cover them. Here shown wooden support bracket functions perfectly as the support frame for a wooden cover. Figure 5 below shows one possible wooden cover design, which was made for an outdoor unit with InfiniSpring®-wooden support bracket.

Figure 5. Wooden cover for the air conditioner

Air conditioner outdoor unit noise can easily disturb inside the house, if noise isolation is not done properly. To avoid the disturbing structure borne noise, it is required that the outdoor unit is installed resiliently on soft springs/mounts. We can provide the springs and also instructions for building the heat air pump wooden support brackets. Actually any type of wooden support bracket can be made easily and for any need. Please do not hesitate to contact us, if you have any comments or questions or have interest to know more.

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Figure 1. InfiniSpring® – Vibration Isolation Platform.

Presented platform is made from 3 mm thick sheet metal (grade S650MC). It can carry loads between 20 to 80 kg, main dimensions are 500x500x80 mm but can be customized freely. Unloaded height of the platform is only 13 mm. Presented platform provides natural frequencies as low as 8 Hz. Figure 2 shows mounting holes on the bottom plate and on the top plate.

Figure 2. InfiniSpring® – Vibration Isolation Platform mounting holes.

Other sheet metal thicknesses can be used as well with higher load carrying capacity and lower natural frequencies. InfiniSpring®-vibration isolation platform is offered through our webpages. In case of questions or any special needs please do not hesitate to contact us.

Online store: LINK TO SHOP

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Figure 1. InfiniSpring® – Spring Mount.

InfiniSpring®- spring mounts are all steel products and manufactured from a steel sheet using laser cutting. This makes the spring mount extremely simple product and it is exceptionally easy to modify the design to match different needs. We designed presented series with a design target to enable versatile mounting options for the spring mounts. Figure 2 below shows the mounting options for a 3 mm plate thickness InfiniSpring®-spring mount.

Figure 2.SM-2x3HS20 InfiniSpring® – Spring Mount with versatile mounting options.

The 3 mm plate thickness InfiniSpring®-spring mount is equipped with screw, bolt and M6 threaded holes and it is for loads from 15 kg up to 40 kg. InfiniSpring®-spring mounts function perfectly both in compression and tension and can be even used as spring hangers.

Load ranges and natural frequencies for different spring mount sizes are shown in Figure 3 below. Single spring mount load range is from 15 kg up to 600 kg depending on the spring mount size.

Figure 3. InfiniSpring® – Spring Mount load ranges and natural frequencies.

InfiniSpring®-spring mounts can be now ordered from us. Please find more detailed information from the spring mount datasheet on our webpages. In case of any questions or special needs please do not hesitate to contact us.

Datasheet: link to DATASHEET

Shop: link to SHOP

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