JPH08247071A - Oiling device for rotary compressor - Google Patents

Abstract

PURPOSE: To improve driving reliability with a low cost device by providing an oil separation hole on a lower part of a wire mesh filter as well as discharging discharged gas from a compression element from a discharge pipe inscribing the wire mesh filter and constituting it so as to feed oil to a shaft from this oil separation hole. CONSTITUTION: A rotary compressor discharges gas sucked in a fluid chamber partitioned by a vane through a discharge pipe 16 by way of compressing it continuously by revolving a roller fit on an eccentric part of a shaft in the inside of a cylinder. In this case, a wire mesh filter 17 is interposed on the discharge pipe 16. Thereby, oil is separated at the time when gas containing a large amount of oil discharged to the discharge pipe 16, the separated oil is introduced to an oiling pipe 1 from the oil separation hole 18 provided on a lower part of the wire mesh filter 20, fed to the shaft from an oiling hole and made to carry out lubrication. Consequently, an oiling pipe and an oiling spring are eliminated and cost of a device is reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary compressor, and more particularly to an oil supply device for the rotary compressor.

[0002]

2. Description of the Related Art In recent years, it has been very important to improve reliability and reduce cost of a rotary compressor.

An example of a conventional compressor will be described below with reference to the Japanese Patent Application Laid-Open No. 62-93495 with reference to the drawings.

FIG. 3 shows a conventional rotary compressor, which is an electric element having a stator 2 and a rotor 3 in a closed container 1,
A compression element driven by this electric element is housed.

In the compression element, the roller 6 fitted to the eccentric portion 5 of the shaft 4 rotates in the cylinder 7 by the rotation of the shaft 4, and the inside of the cylinder is partitioned by the vane 8 pressed against the rotor 6, The gas sucked through the suction pipe 9 is continuously compressed and discharged through the discharge pipe 10.

FIG. 4 is an enlarged view of a main part of FIG.
Refueling spring 12 inscribed in and fixed to shaft 4
Is provided. The rotation of the shaft 4 causes the oil supply spring 12 to rotate, so that the oil 13 stored in the closed container 1 is sucked up to the oil supply hole 14 along the outer periphery of the oil supply spring 12 and supplied to the shaft 4.

[0007]

However, in the above structure, the refueling spring 13 is bent and is inscribed in the refueling pipe 11. Therefore, the repulsive force of the refueling spring 13 causes the refueling pipe 1 to be in contact with the refueling pipe 1.
1 has a problem of reliability deterioration such as wear of the inner wall surface and wear of the oil supply spring 12.

Further, since the oil supply pipe 11 and the oil supply spring 13 are used, the cost is increased.

In view of the above problems, the present invention has high reliability,
An oil supply device for a rotary compressor at low cost is provided.

[0010]

In order to achieve this object, an oil supply device for a rotary compressor according to the present invention comprises a discharge pipe in which a wire mesh filter is inscribed, an oil separation hole provided in a lower portion of the wire mesh filter, It is composed of an oil supply pipe that connects an oil supply hole for supplying oil from the oil separation hole to the shaft.

Further, a wire mesh filter is provided inside the oil supply pipe in the vicinity of the oil supply hole.

[0012]

According to the present invention, the oil contained in the discharged gas in a large amount is separated by the wire mesh filter and flows from the oil separation hole to the oil supply hole through the oil supply pipe. The shaft will continue to be lubricated through the lubrication holes.

Further, inscribed in the vicinity of the oil supply hole of the oil supply pipe,
By installing the wire mesh filter, when the rotary compressor starts from the stop, the oil stored in the wire mesh filter becomes
With the flow of the discharged gas, it immediately flows into the oil supply hole and is supplied to the shaft, so that the shaft is immediately supplied with oil even if the engine is repeatedly started and stopped repeatedly.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An oil supply device for a rotary compressor according to an embodiment of the present invention will be described below with reference to the drawings. The same parts as those of the conventional example will be described using the same reference numerals, and the same parts of the configuration and the operation will be omitted.

FIG. 1 is a side sectional view of an oil supply device for a rotary compressor according to a first embodiment of the present invention, and FIG. 2 is an oil supply for a rotary compressor according to a second embodiment of the present invention. It is a side sectional view of an apparatus.

In FIG. 1, 16 is a wire mesh filter 17
Is a discharge pipe internally inscribed, 18 is an oil separation hole provided in the lower portion of the wire mesh filter, and 19 is an oil supply pipe connecting with an oil supply hole for supplying oil to the shaft.

In the above structure, when the discharged gas containing a large amount of oil passes through the wire mesh filter 18,
The oil is separated, and the oil is supplied from the oil separation hole 18 to the shaft through the oil supply pipe 19, so that the conventional oil supply pipe and oil supply spring are not required, and the moving parts are eliminated. It is possible to provide a highly reliable low-cost oil supply device for a rotary compressor.

Next, the second implementation side of the present invention will be described. The parts having the same configurations and operations as those of the first embodiment will be omitted.

In FIG. 2, reference numeral 20 is a wire mesh filter inscribed in the oil supply pipe 19 near the oil supply hole.

In the above-described structure, the oil supplied to the oil supply hole 14 is always stored in the wire mesh filter 20, so that the oil stored in the wire mesh filter 20 due to the flow of discharge gas when the rotary compressor is started. Since the oil is immediately refueled, the shaft is immediately refueled even if the start and stop are repeated frequently, and a more reliable lubrication device for a rotary compressor can be provided.

[0021]

As described above, the effect of claim 1 of the present invention is that the discharge pipe in which the wire mesh filter is inscribed, the oil separation hole provided in the lower part of the wire mesh filter, the oil separation hole and the oil supply for supplying oil to the shaft. By providing the oil supply pipe that connects the hole, the conventional oil supply pipe and the oil supply spring are not required, so that it is possible to provide a more reliable and low cost oil supply device for a rotary compressor.

The effect of claim 2 is that by inscribing a wire mesh filter in the vicinity of the oil supply hole of the oil supply pipe,
Since the oil can be stored even when the engine is stopped and the shaft is immediately refueled when the engine is started, it is possible to provide a more reliable rotary compressor.

[Brief description of drawings]

FIG. 1 is a side sectional view of an oil supply device for a rotary compressor according to a first embodiment of the present invention.

FIG. 2 is a side sectional view of an oil supply device for a rotary compressor according to another embodiment of the present invention.

FIG. 3 is a sectional view of a conventional rotary compressor.

FIG. 4 is an enlarged view of a main part of FIG.

[Explanation of symbols]

 1 Airtight Container 16 Discharge Pipe 17 Wire Mesh Filter 18 Oil Separation Hole 19 Oil Supply Pipe 20 Wire Mesh Filter

Claims (2)

[Claims] 1. An electric element internally provided in a closed container, a compression element driven by the electric element, and a wire mesh filter for directly discharging the discharge gas from the compression element from the discharge chamber to the outside are inscribed. An oil supply device for a rotary compressor, comprising a discharge pipe, an oil separation hole provided in a lower portion of the wire mesh filter, and an oil supply pipe connecting an oil supply hole for supplying oil from the oil separation hole to a shaft. 2. The oil supply device for a rotary compressor according to claim 1, wherein a wire netting filter is provided inside the oil supply pipe near the oil supply hole.