Method for controlling the temperature of a vacuum pump, and associated vacuum pump and installation

A method for controlling a temperature of a vacuum pump of a dry vacuum pump type subjected to variable pumping loads,

• the vacuum pump comprising:
• a stator,
• at least one pumping stage,
• two shafts extending into the at least one pumping stage and respectively bearing at least one rotor, the at least one rotor being configured to rotate synchronously in opposite directions in the stator and to drive a gas that is to be pumped from a suction inlet of the vacuum pump to a delivery outlet,
• at least one cooling element coupled to the stator,
• at least one temperature sensor configured to measure a temperature of the stator, and
• a controller configured to control the temperature of the stator by means of the at least one cooling element and of the at least one temperature sensor;
• and
• the method comprising:
• controlling the temperature of the vacuum pump by means of the at least one cooling element coupled to the stator on the basis of a temperature setpoint and of a measurement of the temperature of the stator, and
• monitoring whether a value of a parameter indicative of a pumping load, chosen from either a current drawn or a power consumed by the vacuum pump, is below a load threshold and, if the value is below the load threshold, then the temperature setpoint is increased.