| 摘要 |
<p>The invention is concerned with the field of constructing compressors and can be used in stationary and portable gas (air) and refrigerating plants, air-conditioners and heat pumps. A rotary piston compressor is proposed, the compressor comprising an epitrochoidal body with a front and a rear lateral cover and with a rotor which is arranged in the cavity of said body and is situated on an eccentric shaft, wherein the body, lateral covers and rotor form variable-volume working chambers, a system for lubricating the working surfaces of the compressor, the system having a lubricant-containing housing, a device for atomizing the lubricant in the form of an ejector, the nozzle of which is connected by a pipe to the bottom part of the housing, a system of channels connecting the ejector to the working chambers, and a device for metering the supply of lubricant, in which the lubricant-containing housing is fastened to the rear lateral cover, the ejector is mounted within the housing, and the channel system is in the form of a radial or inclined opening, which is formed in the expansion zone in the body, and an axial opening which is connected to said opening via a large-diameter chamber and passes through the body, the flange of the rear lateral cover and the front flange of the housing, and is connected to the ejector, and radial channels are formed on the working surfaces of the lateral covers in order, via an annular gap formed between the eccentric shaft and rear lateral cover, to connect the housing cavity to the working chambers in the suction period, wherein the device for metering the supply of lubricant is in the form of a spring-loaded valve and slotted flexible ring, primarily made of anti-friction material and having a gap of a specified metering size at the location of the slot, of which valve and ring the spring-loaded valve is mounted in front of the ejector in the above-mentioned large-diameter chamber, and the slotted flexible ring is mounted in the annular gap between the eccentric shaft and rear lateral cover, wherein said annular gap is covered by the ring and the gap of a specified metering size is formed at the location of the slot of said ring. The compressor additionally comprises, within the housing, an additional backup lubricant-spraying means in the form of a pair of gears mounted in the housing.</p> |
