| 摘要 |
FIELD: compressor and pump engineering. ^ SUBSTANCE: spiral machine comprises housing, ports for sucking and delivering gas, unmovable spiral member that engages the movable spiral member moving with eccentricity with respect to the unmovable spiral member to form closed compression spaces, device for preventing rotation, eccentric shaft mounted on bearings, and fan for circulating cooling air. The blades of the fan wheel are mounted with a spaced relation to the unmovable base that is a cooling surface to cause air to flow over the surface of the unmovable base to generate vortices, air flow detachment, and decreasing thermal resistance on the cooling surface that is provided with roughness. The wheel of the fan is provided with autonomous drive. ^ EFFECT: enhanced reliability and prolonged service life. ^ 1 cl, 5 dwg |
