JPS6069287A - Oil supplying structure for enclosed type compressor - Google Patents

Abstract

PURPOSE:To prevent foaming phenomena due to mixing of refrigerant gas and lubricating oil by a method wherein a porous plate is provided from the upper part of opening of a small vertical groove, provided between a discharging cover and a lower bearing, to the position of oil level of the lubricating oil. CONSTITUTION:The porous plate 20 is provided from the upper part of opening of the small vertical groove 17, provided between the discharging cover 11 and the lower bearing, to the position of level of the lubricating oil. The refrigerant gas is sucked from a suction pipe 9 and compressed, thereafter, is discharged into a discharging muffler 13. In this case, a part of the refrigerant gas is discharged into the oil reserved at the bottom of the case 1 from the opening of the small vertical groove 17, however, most of the refrigerant gas is sucked by the porous plate 20 and is discharged into the case 1 at a position higher than the level of the oil, therefore, the foaming phenomena due to mixing of the refrigerant gas and the lubricating oil is not generated and stable lubrication may be effected.

Description

[Detailed description of the invention] This J2 concerns the reliability of hermetic compressors.

A conventional f-closed compressor will be explained with reference to FIG.

In the upper part of the case 1, a pressure element 4IIIii4 element A is arranged in the lower part of the pulsation element 21, and the excitation element 2 and the compression element base are connected by a rotating shaft 4. Rotor 5 constituting awakening key #2
The row 27 that is attached to the center part 6 of the rotating shaft 4 due to the rotation of
rotates in the cylinder chamber 8, and refrigerant gas is sucked in through the suction pipe 9, compressed, and then discharged from the valve 10 into the muffling chamber 13, which is composed of a rod 11 and a bearing 12.

After that, most of the refrigerant gas passes through the passage 14 penetrating the compression ratio and exits into the case 1, increasing the gap between the rotor 5 and stator 15 and the gap between the stator 15 and case 1. The lubricating oil is discharged from the outlet g16 at the top of the case 1. Lubricating oil is stored at the bottom of the case 1.The vcri small vertical groove 17 between the four bodies 11 and the bearing 12 is a gas vent hole. The small vertical groove 17 allows refrigerant gas to flow through the gap 18 between the four bodies 11 and the F pair pufferfish 12, and is attached to the lower end of the rotating shaft 4. Rotating from oil supply 19, 11
f: Prevents refrigerant gas from entering the inner hole of 114 and interfering with oil supply to the sliding portion of the compression element heather. According to this hermetic compressor, since the small vertical grooves 17 are submerged in the lubricating oil surface F, refrigerant gas is violently blown out into the lubricating oil, and the lubricating oil and refrigerant gas mix, resulting in a foaming state. The lubricating oil is taken out of the hermetic compressor from the discharge a16 along with the cold/ring gas, and the oil level of the lubricating oil stored in the case 1 decreases.
The open-fire drying station was developed to improve the above-mentioned defect, where oil supply to the sliding parts of the compression elements is insufficient and galling is likely to occur. That is, the storage body 11 and the lower bearing 1
A porous plate is provided from the upper part of the small vertical $17 opening provided between the lubricating oil level and the lubricating oil level.

The invention will now be explained with reference to an embodiment shown in FIG. Refrigerant gas is sucked in through the suction pipe 9, compressed, and then discharged into the silencing chamber 16. Most of the refrigerant gas rises through the coil 14 and exits the case 1 before being discharged from the discharge pipe 16, but some refrigerant gas is discharged through the small vertical opening 1417.
It is discharged into the oil stored in the bottom vc of the case 1. However, the discharged refrigerant gas immediately becomes porous &2.
0 and exits into case 1 from a position above the lubricating oil level. Therefore, the phenomenon of the refrigerant gas and the lubricating oil mixing violently and causing bubbles does not occur at all. Since the structure is configured so that the lubricating oil is not allowed to come out of the hermetic compressor, it is possible to prevent the lubricating oil level from dropping and the lubricant from being insufficiently supplied to the slide #JJIfi of the compression element, thereby preventing the galling phenomenon. This has the effect of significantly improving reliability. If a concave depression is found on the underside of the porous plate, or if the opening of the small vertical groove 17 is gripped with a porous object, the small vertical f4
The refrigerant gas seeping out from 17 can be captured more reliably, and reliability is further improved.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a conventional hermetic compressor, and FIG. 2 is a longitudinal sectional view of the hermetic compressor of the present invention. DESCRIPTION OF SYMBOLS 1... Case, 2... Electric element, 3... Compression element, 4... Rotating shaft, 5... Rotor, 6... -6 part,
7... Roller, 8... Cylinder chamber, 9... Suction pipe, 10... Valve, 11... Cover, 12... Lower bearing, 13... Silence chamber, 14...・Aisle, 15・
...Stator, 16...Discharge pipe, 17...Small vertical groove,
18... Gap, 19... Lubricator, 20... Porous placement plate. No 1 drawing

Claims (1)

[Claims] 1. A screw element is disposed on the upper part of the planar case, a compression element is disposed on the lower part, a cylinder constituting the compression element is sandwiched between an upper bearing and a lower bearing, and a 4.
A closed type compressor in which a body is attached to form a silencing chamber is characterized in that a porous plate is provided from the upper part of the opening of the small vertical groove provided between the cover body and the lower bearing to the level of the lubricating oil. Oil supply structure for a hermetic compressor. Lubricating the hermetic compressor dIIa. 6. Porous material with a shape that obstructs the opening of the small vertical groove