Heat‑dissipation Channel Improvement of Oil‑free Vacuum Pump, Control Temperature Rise Under Continuous Heavy‑load Operation

Long‑term heavy‑load operation of oil‑free vacuum pump will generate a large amount of compression heat and friction heat inside the pump cavity. Poor heat dissipation will cause continuous temperature rise of key components such as scroll plates, bearings and motor windings. Excessive operating temperature will accelerate material aging, aggravate thermal deformation of precision parts, and further trigger performance decline such as vacuum attenuation and abnormal noise.

The improvement of heat‑dissipation channel starts with optimizing the heat conduction path and airflow circulation. Optimize the structure of heat‑dissipation fins on the pump housing, increase the effective heat‑dissipation area and reasonably adjust the fin spacing to avoid airflow dead zones. Optimize the internal air duct layout to guide the cooling airflow to directly sweep high‑heat‑generating parts, reduce local heat accumulation. For forced air‑cooling structures, match the fan air volume and air duct flow direction to prevent short‑circuit of cooling air.

Carry out thermal isolation optimization between high‑temperature pump cavity and motor cavity, prevent heat from transferring to motor winding in large quantity. Optimize the assembly fitting tolerance of heat‑conducting contact surfaces, reduce contact thermal resistance and improve heat transfer efficiency. Avoid local structural dead angles where heat is hard to dissipate during structural redesign.

After the improvement of heat‑dissipation channel, temperature rise test shall be carried out under continuous heavy‑load working conditions. Monitor the temperature changes of pump shell, bearing position and motor winding for long‑time running. Cooperate with regular dust removal maintenance for heat‑dissipation channels to prevent dust accumulation from blocking fins and air ducts, so as to maintain stable heat‑dissipation performance and prolong the service life of oil‑free vacuum pump.

When the equipment is applied in high‑ambient‑temperature scenarios, auxiliary heat‑dissipation measures can be matched according to actual working conditions, to ensure that the temperature rise of the whole machine is controlled within the allowable design range under long‑time continuous operation.