PRESERVATION Product Technology


Inverter technology

Inverter technology -> energy efficiency -> cost efficiency

In a reciprocating compressor the action of the piston inside a cylinder causes the refrigerant to be compressed. The movement of the piston creates a vacuum inside the cylinder that draws the refrigerant in. The refrigerant is then compressed before flowing out of the cylinder to begin the refrigeration cycle.

In a conventional reciprocating compressor the piston will always be working at full speed when the compressor is on to deliver maximum cooling capacity. Normally the load in the freezer is not high enough to need the maximum cooling capacity so the piston movement is excessive and energy is wasted. An inverter compressor can operate at different speeds depending on the ambient and load conditions. At times when the freezer only needs a minimal amount of cooling due to lower ambient temperatures, such as overnight, the compressor will move at a slower speed using much less energy.

The start up of a compressor is the most energy consuming part of the cycle. The ability of the inverter compressor to run at lower speeds has the advantage that the compressor will not turn off and on as often thus saving energy and reducing wear.

Inverter technology -> sample safety

The intelligent control of the inverter compressor optimizes running speed for the conditions. When the inverter compressor is running as normal it will stay on for longer than a conventional compressor but at a minimal speed. This reduces the power consumption and keeps freezer temperatures stable. When the door has been opened the compressor will run at maximum capacity to bring the temperature inside the freezer back down to set value quickly before resuming a normal cycle again.

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