Abstract: A method for controlling at least one radial blower in a cooling system, wherein the radial blower comprises a housing in which a shaft is rotationally mounted, which receives at least one impeller wheel of a compressor at one end, which is secured to the housing, and the housing comprises at least one radial bearing and at least one axial bearing via which the shaft is rotationally mounted in the housing, and said radial blower also comprises a motor which is driven by a rotor and a stator and which drives the shaft, wherein, by means of at least one laser Doppler vibrometer assigned to the shaft, operating points of the shaft are detected and forwarded to a controller for determining an operating status of the radial blower.

Abstract: A radial blower, in particular for a cooling machine, comprising a housing in which a shaft is rotationally mounted, which receives at least one impeller wheel of a compressor at one end, which is secured to the housing, comprising at least one radial bearing and at least one axial bearing via which the shaft is rotationally mounted in the housing, and comprising a motor driven by a rotor and a stator and provided between the first and the second radial bearing, wherein at least one channel having a pressure connection for a pressure medium to be supplied is provided in the housing, which channel feeds into a rotor space formed between the shaft and the housing and extending from the impeller wheel to the radial bearing or axial bearing, which is provided next to the impeller wheel.

Abstract: A radial blower, in particular for a cooling machine, comprising a housing in which a shaft is rotationally mounted, which receives at least one impeller wheel of a compressor at one end, which is secured to the housing, comprising at least one radial bearing and at least one axial bearing via which the shaft is rotationally mounted in the housing, and comprising a motor driven by a rotor and a stator and provided between the first and the second radial bearing, wherein at least one channel having a pressure connection for a pressure medium to be supplied is provided in the housing, which channel feeds into a rotor space formed between the shaft and the housing and extending from the impeller wheel to the radial bearing or axial bearing, which is provided next to the impeller wheel.