Vacuum pump, scroll pump, and manufacturing method for such

Abstract

A vacuum pump includes a fan including a rotational speed to be controlled to cool the vacuum pump, a temperature sensor, and a control device that regulates the rotational speed of the fan in dependence on a power consumption of a drive of the vacuum pump and on a temperature measured by the temperature sensor. Another vacuum pump includes an electrically driven fan, an air guide hood, and a conductor that leads from the fan to a supply connection for the fan. The conductor is connected to the supply connection via an electrical connector. The connector is separated from an air flow path, defined by the air guide hood, by a partition wall.

What is claimed is: 
     
         1 . A vacuum pump, comprising
 a fan including a rotational speed that is configured to be controlled to cool the vacuum pump;   a temperature sensor; and   a control device that is configured to regulate the rotational speed of the fan in dependence on a power consumption of a drive of the vacuum pump and on a temperature measured by the temperature sensor.   
     
     
         2 . The vacuum pump in accordance with  claim 1 ,
 wherein the regulation takes place in dependence on a temperature of at least one of a motor, a motor winding, drive electronics, o a pump body, and a housing of the vacuum pump, measured by the temperature sensor.   
     
     
         3 . The vacuum pump in accordance with  claim 1 ,
 wherein a first threshold value of the temperature is defined, and   wherein at least one of:
 the regulation only takes place at a measured temperature above the first threshold value, and 
 the rotational speed of the fan is kept constant at zero or at a minimum rotational speed below the first threshold value. 
   
     
     
         4 . The vacuum pump in accordance with  claim 1 ,
 wherein a second threshold value of the temperature is defined, and   wherein the rotational speed of the fan is kept constant at a maximum rotational speed at a measured temperature above the second threshold value.   
     
     
         5 . The vacuum pump in accordance with  claim 1 , wherein the vacuum pump is a scroll pump. 
     
     
         6 . A vacuum pump, comprising:
 an electrically driven fan;   an air guide hood; and   a conductor that leads from the fan to a supply connection for the fan,   wherein the conductor is connected to the supply connection via an electrical connector, and   wherein the connector is separated from an air flow path, defined by the air guide hood, by a partition wall.   
     
     
         7 . The vacuum pump in accordance with  claim 6 ,
 wherein the conductor is a cable.   
     
     
         8 . The vacuum pump in accordance with  claim 6 ,
 wherein the conductor leads from the fan through the air guide hood to the supply connection.   
     
     
         9 . The vacuum pump in accordance with  claim 6 ,
 wherein the electrical connector is a plug.   
     
     
         10 . The vacuum pump in accordance with  claim 6 ,
 wherein the connector is at least partly arranged within the air guide hood.   
     
     
         11 . The vacuum pump in accordance with  claim 6 ,
 wherein the conductor is led from the connector through a recess in the partition wall.   
     
     
         12 . The vacuum pump in accordance with  claim 11 ,
 wherein the recess is arranged offset from the connector in a peripheral direction.   
     
     
         13 . The vacuum pump in accordance with  claim 6 , wherein the vacuum pump is a scroll pump.