JPS62110595U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional view showing a shaft of an embodiment in which the present invention is applied to a closed vertical shaft scroll compressor for refrigeration and air conditioning, Fig. 2 is a partially enlarged perspective view showing the upper part of Fig. 1, and Fig. 3 4 is a longitudinal sectional view showing a known closed vertical shaft scroll compressor for refrigeration and air conditioning, and FIG. 4 is a model diagram showing how to support the shaft shown in FIG. 3. 51...Centrifugal pump, 53...Eccentric pin, 71...Upper bearing, 72...Lower bearing, 100...Shaft, 1
02... Oil supply hole, 103... Lower bearing oil supply hole, 104
...Circumferential oil structure, 105...Communication hole, 106...Gas vent hole, 107...Oil supply hole, 108...Introduction hole.

Claims (1)

[Scope of utility model registration request] It is pivotally supported by an upper bearing and a lower bearing, has an eccentric pin protruding from its upper end for rotating an orbiting scroll, and has a vertical shaft with a centrifugal pump formed at its lower end, which is bored in the axial direction. In a scroll type fluid machine equipped with a lubricating means for supplying lubricating oil from an oil sump to a bearing through an eccentric pump discharge hole, an eccentric pin is bored in the shaft in the axial direction at an eccentric position substantially opposite in phase to the eccentric pin. eccentric pump discharge hole;
a radial oil hole whose inner end opens to the eccentric pump discharge hole and whose outer end opens to the lower bearing surface; one end communicates with the eccentric pump discharge hole and the other end communicates with the shaft of the eccentric pin; A scroll-type fluid machine characterized by comprising a connecting oil hole that communicates with the directional oil hole.