Compressors for low GWP refrigerant: the HA-LG series

Applications in low temperature basically place higher demands on every compressor. In the low-temperature range, the refrigerant mass flow is lower and is disproportionately heated by the drive motor. In addition, HFO refrigerants such as 455A or R454C require significantly more know-how in terms of the drive motor compared to standard refrigerants.

The reason: HFO refrigerants have a significantly higher solubility in the oil, which leads to a strong reduction of the oil viscosity and thus increases the susceptibility to compressor damage.

For this reason, BOCK has developed a special drive unit for the new LG series that makes the compressors less sensitive to decreasing viscosity. This has resulted in the HA-LG series now available on the market. The proven air-cooled semi-hermetic Bock compressor for low temperature.

Efficient and reliable solution for low temperature applications

The compressors are direct-intake and the motor is air-cooled. The suction gas is not additionally heated by the motor but is sucked in directly by the compressor without any diversions via the motor. The engine is cooled by a compact ventilation unit, which cools not only the engine itself but also the cylinder heads through targeted air cooling. This allows the discharge gas temperature to be reduced. The result: a significant increase in capacity and an extension of the application range.