Rotary compressor with oiling mechanism

摘要

A rotary compressor includes an oiling mechanism that contains a vertical fitting hole formed on a countershaft portion in the lower part of the rotating shaft, and an oil pipe having an inlet port at the lower end and an opening at the upper end. The upper part of the oil pipe is press-fitted into the vertical fitting hole. The oiling mechanism further contains a pump vane having a vane portion and a base portion. The vane portion is twisting processed and inserted into the vertical oil hole to provide a space. The base portion is fixed into the lower part of the oil pipe that has an inner diameter smaller than the width thereof.

主权项

1. A rotary compressor comprising:
a hermetically-sealed compressor housing that includes a refrigerant outlet in the upper part thereof and a refrigerant inlet in the lower part thereof, and retains lubricating oil in the lower part thereof; a compressing unit that is placed in the lower part of the compressor housing and compresses a refrigerant sucked through the refrigerant inlet to discharge the compressed refrigerant through the refrigerant outlet; a motor that is placed in the upper part of the compressor housing and includes a rotating shaft connected to the compressing unit to drive the compressing unit via the rotating shaft, the rotating shaft having a vertical oil hole and a lateral oil hole for supplying the lubricating oil; and an oiling mechanism that supplies the lubricating oil to the compressing unit through the vertical oil hole and the lateral oil hole, wherein the oiling mechanism includes:
a vertical fitting hole that is formed on a countershaft portion in the lower part of the rotating shaft;an oil pipe that has an inlet port at the lower end and an opening at an upper end, an upper part of the oil pipe being press-fitted into the vertical fitting hole; and a pump vane formed of an elongate steel plate, the pump vane including a vane portion and a base portion, the vane portion having a 180-degree twisted shape, the base portion arranged at one end of the pump vane and having a width wider than a width of the vane portion, the vane portion and the base portion having substantially equal thickness, wherein the with of the vane portion is smaller than an inner diameter of the oil pipe and an inner diameter of the vertical oil hole, and the width of the base portion is slight;y wider than the inner diameter of the oil pipe for interference fit, and the pump vane is arranged in the oil pipe such that the base portion is fixed in a lower part of the oil pipe and the vane portion is disposed in the vertical oil hole, and that a space is formed between the vane portion and the oil pipe, whereby the countershaft portion is not deformed due to the deformation of the oil pipe.