CN112460025A

CN112460025A - Lubricating oil supply device and rotary machine including same

Info

Publication number: CN112460025A
Application number: CN201910840956.5A
Authority: CN
Inventors: 胡小伟; 倪凌枫; 李丽丽
Original assignee: Emerson Climate Technologies Suzhou Co Ltd
Current assignee: Copeland Suzhou Co Ltd
Priority date: 2019-09-06
Filing date: 2019-09-06
Publication date: 2021-03-09

Abstract

The present disclosure provides a lubricating oil supply device and a rotary machine, the lubricating oil supply device including: an upper plate; a first gusset plate and a second gusset plate extending downward from the upper plate; and a gasket disposed below the first gusset and the second gusset, and defining a first hole allowing inflow of lubricating oil; characterized in that the lubricating oil supply device further includes a throttle member that is connected to the upper plate above the upper plate and that defines a second hole that allows lubricating oil to flow out, the throttle member being configured to restrict the flow rate of lubricating oil that flows through the second hole. The lubricating oil supply device according to the present disclosure can prevent an excessive amount of oil supply from occurring in the case of high-speed rotation of the rotating shaft while securing the lubrication requirement in the case of low-speed rotation of the rotating shaft, thereby improving the performance of the rotating machine.

Description

Lubricating oil supply device and rotary machine including same

Technical Field

The present disclosure relates to a lubricating oil supply device and a rotary machine including the lubricating oil supply device.

Background

The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.

The compressor generally includes a housing, a compression mechanism accommodated in the housing, a rotary shaft for driving the compression mechanism, and the like. Generally, a compressor requires lubrication, sealing, and cooling of compressor parts (e.g., bearings, compression mechanisms, etc.) by a lubricant (hereinafter referred to as lubricating oil or oil). When the compressor is operated, the rotary shaft is rotated by the motor to drive the compression mechanism to compress the working fluid, and at the same time, the lubricating oil is supplied to the respective components of the compressor via the lubricating oil supply passage of the rotary shaft.

With the development of the frequency conversion technology, the rotating speed of the compressor can be correspondingly changed according to the actual required conditions. However, in the case where the rotating shaft of the compressor is rotated at a high speed, the amount of oil supply may be excessively high, and the excessive amount of lubricating oil may not only cause waste of the lubricating oil but also cause a decrease in the efficiency of the heat exchanger, thereby affecting the operation and performance of the compressor system. On the other hand, in the case where the rotating shaft of the compressor is rotated at a low speed, there is a possibility that the performance of the compressor is deteriorated due to the excessive wear of parts caused by the insufficient supply of the lubricating oil.

Therefore, there is still a need to provide a lubricating oil supply device capable of solving the above-mentioned problems.

Disclosure of Invention

It is an object of one or more embodiments of the present disclosure to provide a lubricating oil supply device that enables both the requirement for lubrication in the case where a rotating shaft rotates at a low speed and the excessive supply of oil in the case where the rotating shaft rotates at a high speed to be prevented, thereby improving the performance of a rotating machine.

According to an aspect of the present disclosure, there is provided a lubricating oil supply device including: an upper plate; a first gusset plate and a second gusset plate extending downward from the upper plate; and a gasket disposed below the first gusset and the second gusset, and defining a first hole allowing inflow of lubricating oil; characterized in that the lubricating oil supply device further includes a throttle member that is connected to the upper plate above the upper plate and that defines a second hole that allows lubricating oil to flow out, the throttle member being configured to restrict the flow rate of lubricating oil that flows through the second hole.

According to one aspect of the present disclosure, the throttle member includes a throttle plate having an annular body and a connecting portion connecting the throttle plate to the upper plate, the throttle plate defining the second bore.

According to one aspect of the present disclosure, the throttle member includes a first throttle plate and a second throttle plate having opposed to each other and a first connecting portion and a second connecting portion respectively connecting the first throttle plate and the second throttle plate to the upper plate, the first throttle plate and the second throttle plate defining the second bore therebetween.

According to an aspect of the present disclosure, positions of the first throttle plate and the second throttle plate in a longitudinal direction of the lubricating oil supply device are shifted from each other.

According to one aspect of the present disclosure, the first gusset and the second gusset extend in different directions from the upper plate such that the first gusset and the second gusset form a bifurcated structure, and at least one of the first gusset and the second gusset is connected to the gasket at an end opposite to an end extending from the upper plate.

According to another aspect of the present disclosure, there is provided a rotary machine including a rotary shaft having a lubricant supply passage provided along an axial direction of the rotary shaft and having a first axial end portion and a second axial end portion, and a lubricant supply device provided in the lubricant supply passage, the lubricant flowing in a direction from the first axial end portion toward the second axial end portion, the lubricant supply device including: an upper plate; first and second corner panels extending from the upper panel toward the first axial end; a gasket disposed closer to the first axial end portion than the first gusset and the second gusset, and defining a first hole that allows inflow of lubrication oil, characterized in that the lubrication oil supply device further includes a throttle member disposed closer to the second axial end portion than the upper plate, the throttle member covering at least a portion of the lubrication oil supply passage and defining a second hole that allows outflow of lubrication oil.

According to another aspect of the present disclosure, the throttle member is disposed separately from the upper plate, and the throttle member is fixed inside the lubricating oil supply passage.

According to another aspect of the disclosure, the throttle member is constituted by an annular body, or the throttle member includes third and fourth gussets having bases extending from the bases toward the second axial end and a throttle plate defining the second hole, the throttle plate is disposed closer to the second axial end than the third and fourth gussets, and the third and fourth gussets extend in different directions to form a bifurcated structure.

According to another aspect of the present disclosure, the area of the second hole is 0.3 to 0.7 times the area of the lubricating oil supply passage.

According to another aspect of the present disclosure, the outer peripheral wall of the throttle member contacts the inner wall of the lubricant oil supply passage.

According to another aspect of the disclosure, the first gusset and the second gusset extend in different directions from the upper plate such that the first gusset and the second gusset form a bifurcated structure, and at least one of the first gusset and the second gusset is connected to the gasket at an end opposite to an end extending from the upper plate.

According to another aspect of the present disclosure, the lubricant supply device is provided in the lubricant supply passage near the first axial end portion.

According to another aspect of the present disclosure, the rotary machine is an inverter type scroll compressor and a rotary shaft of the scroll compressor is used to drive a compression mechanism of the scroll compressor.

The lubricating oil supply device according to the present disclosure can prevent an excessive amount of oil supply from occurring in the case of high-speed rotation of the rotating shaft while securing the lubrication requirement in the case of low-speed rotation of the rotating shaft, thereby improving the performance of the rotating machine.

Drawings

The features and advantages of one or more embodiments of the present disclosure will become more readily apparent from the following description taken in conjunction with the accompanying drawings. The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way, the drawings are not to scale, and some features may be exaggerated or minimized to show details of particular components. In the drawings:

fig. 1 is a sectional view schematically showing a scroll compressor to which a lubricating oil supply device according to a comparative example is applied;

FIG. 2 is an enlarged partial cross-sectional view of the bottom structure of FIG. 1;

fig. 3a and 3b schematically show a lubricating oil supply device according to a comparative example;

fig. 4 is a partial sectional view schematically showing a scroll compressor to which a lubricating oil supply device according to a first embodiment of the present disclosure is applied;

5a-5c schematically illustrate a lubrication oil supply device according to a first embodiment of the present disclosure;

fig. 6 shows a graph of variation in oil supply amount for different rotation speeds of the rotary shaft for a scroll compressor to which the lubricating oil supply device according to the comparative example is applied and a scroll compressor to which the lubricating oil supply device according to the first embodiment of the present disclosure is applied.

Fig. 7 is a partial sectional view schematically showing a scroll compressor to which a lubricating oil feeding device according to a second embodiment of the present disclosure is applied;

8a-8c schematically illustrate a lubrication oil supply device according to a second embodiment of the present disclosure;

fig. 9 is a partial sectional view schematically showing a scroll compressor to which a lubricating oil feeding device according to a third embodiment of the present disclosure is applied; and

fig. 10 is a partial sectional view schematically showing a scroll compressor to which a lubricating oil supply device according to a fourth embodiment of the present disclosure is applied.

Detailed Description

The following description of the various embodiments of the disclosure is merely exemplary in nature and is in no way intended to limit the disclosure, its application, or uses. The same reference numerals are used to designate the same components in the respective drawings, and thus the configurations of the same components will not be described repeatedly.

First, the general configuration of the scroll compressor will be described with reference to fig. 1. As shown in fig. 1, the scroll compressor 1 includes a housing 10. More specifically, the housing 10 may be constructed of a generally cylindrical body 12, a top cover 14 disposed at one end of the body 12, and a bottom cover 16 disposed at the other end of the body 12. A partition plate 20 is disposed between the top cover 14 and the body 12, the partition plate 20 dividing the internal space of the housing 10 into a high pressure side and a low pressure side, wherein the space between the partition plate 20 and the top cover 14 forms the high pressure side and the space defined by the partition plate 20, the body 12 and the bottom cover 16 forms the low pressure side. A lubricating oil pool is provided at the lower portion of the casing 10.

The housing 10 accommodates therein a compression mechanism 30 and a drive mechanism 40. In the example shown in FIG. 1, compression mechanism 30 includes a non-orbiting scroll member 32 and an orbiting scroll member 34 that mesh with each other. The driving mechanism 40 includes a motor 50 and a rotary shaft 60. The motor 50 includes a stator and a rotor. The stator is fixedly connected to the housing 10. The rotor is fixedly connected to the rotating shaft 60 and rotates in the stator. When the compressor is operated, the rotary shaft 60 rotates to drive the compression mechanism 30 to compress the working fluid, and at the same time, the lubricating oil is supplied to compressor components such as the fixed scroll part 32, the orbiting scroll part 34, and the bearings through the lubricating

oil supply passages

62, 64 inside the rotary shaft 60. A first axial end (lower end in fig. 1) of the lubricant supply passage is disposed in the lubricant sump, and a second axial end (upper end in fig. 1) is disposed adjacent the eccentric crank pin 72. The lubrication oil supply passage includes a first lubrication oil supply passage 62 concentric with the rotary shaft 60 and a second lubrication oil supply passage 64 offset in the radial direction with respect to the first lubrication oil supply passage.

The rotary shaft 60 is supported at an upper end by a main bearing housing and at a lower end by a lower bearing housing 70. Main and lower bearing housings 70 are fixedly connected to housing 10 by suitable means. An eccentric crank pin 72 of the rotary shaft 60 is inserted into the orbiting scroll member 34 to rotatably drive the orbiting scroll member 34.

Referring to fig. 2, a lubrication oil supply device 80 may be provided in the first lubrication oil supply passage 62. As shown in detail in fig. 3a and 3b, the lubrication oil supply device 80 includes an upper plate 82, a first gusset 84, a second gusset 86, and a gasket 88. The first and

second corner plates

84, 86 extend downwardly from the upper plate 82 and diverge respectively in different directions such that the first and

second corner plates

84, 86 form opposing fork-shaped structures. A washer 88 is disposed below the first and

second gussets

84, 86, and the washer 88 is formed as a generally circular ring-shaped body having a through hole 89 in the center. The first and

second gussets

84, 86 may be connected to a gasket 88 at an end opposite the end extending from the upper plate 82 (i.e., the lower end in fig. 2).

As shown in fig. 2, when the compressor is operated, the lubricating oil of the lower portion of the casing 10 enters the first lubricating oil supply passage 62 inside the rotary shaft 60 through the through-hole 89 of the gasket 88. Since the lubricating oil supply device 80 rotates together with the rotary shaft 60, the lubricating oil flows in the radial direction from the center of the washer 88 to the peripheral edge of the washer 88 by the centrifugal force, whereby the lubricating oil is pumped up along the first angle plate 84 and the second angle plate 86. The oil then continues to be pumped upwardly through the upper plate 82, flowing to the second oil supply passage 64 and to the second end adjacent the eccentric crank pin 72 (shown in FIG. 1). After being discharged from the second end, the lubricating oil flows downward under the action of gravity and lubricates and cools the various moving parts under the drive of the various moving parts. This lubricating oil supply device 80 can efficiently throw lubricating oil from the lubricating oil pool at the bottom up to each moving part of the compressor, thereby increasing the amount of oil supply.

However, as the rotational speed of the rotary shaft 60 increases, the amount of the lubricating oil pumped to the inside of the rotary shaft 60 and thus to the moving parts also increases. Therefore, in the case where the rotary shaft 60 rotates at a high speed, an oil supply amount in the compressor may be excessively high, which not only causes a waste of the lubricating oil but also may cause an oil circulation rate to be excessively high, which is not desirable.

In order to solve the above problems, the present inventors have devised an improved lubricating oil supply device that adjusts the amount of lubricating oil supplied through a lubricating oil supply passage when a rotary shaft rotates using a throttle, so that it is possible to solve the problem of an excessive amount of oil supplied when the rotary shaft rotates at a high speed while ensuring sufficient supply of lubricating oil when the rotary shaft rotates at a low speed, thereby achieving the purpose of improving the performance of a compressor.

The lubricating oil supply device according to the present disclosure will be described in further detail with reference to fig. 4 to 10.

Fig. 4 is a partial sectional view schematically showing a scroll compressor to which a lubricating oil supply device according to a first embodiment of the present disclosure is applied. Fig. 5a to 5c specifically show a lubricating oil supply device according to a first embodiment of the present disclosure. As shown in fig. 5a to 5c, the lubricating oil supply device 100 according to the first embodiment of the present disclosure includes an upper plate 82, a first angle plate 84, a second angle plate 86, and a gasket 88 similarly to the lubricating oil supply device 80 according to the comparative example shown in fig. 1, except that the lubricating oil supply device 100 further includes a throttle member provided above the upper plate 82. The throttle member includes a throttle plate 110 and a connecting portion 120. The throttle plate 110 at least partially covers the first lubricant supply passage 62 to restrict the flow rate of the lubricant, and the throttle plate 110 defines a through hole 112 in the center thereof that allows the lubricant to flow out. The connecting portion 120 connects the throttle plate 110 to the upper plate 82. Preferably, the area of the through hole 112 may be 0.3 to 0.7 times the area of the first lubricant supply passage 62, and the outer wall of the throttle plate 110 may be disposed in contact with the inner wall of the first lubricant supply passage 62, so that a better throttling effect can be achieved.

As exemplarily shown in fig. 4, the throttle plate 110 may extend in a direction perpendicular to the flow direction of the lubricating oil.

When the rotary shaft 60 of the compressor is operated at a high speed, the lubricating oil in the lower portion of the casing 10 flows through the through-hole 89 of the gasket 88 and is then pumped up along the first gusset 84, the second gusset 86, and the upper plate 82 to the throttle plate 110, at which time the lubricating oil supplied upward is subjected to a local resistance of the throttle plate 110 covering the first lubricating oil supplying passage 62, so that the upward pumping force is reduced and the amount of lubricating oil flowing through the throttle plate 110 is reduced, thereby preventing an excessive amount of lubricating oil from being supplied to the second lubricating oil supplying passage 64 and reaching the second end portion adjacent to the eccentric crank pin. On the other hand, when the rotary shaft 60 of the compressor is operated at a low speed, since the rotational speed is low at this time, the force of pumping up through the through-hole 89 of the gasket 88 is small, and therefore the lubricating oil blocked by the throttle plate 110 is relatively small. That is, in the case of low-speed rotation, the throttling action of the throttle plate 110 is relatively small, and therefore it is possible to ensure sufficient supply of lubricating oil to the moving parts of the compressor.

Referring now to FIG. 5c, a method of making the lubrication oil supply apparatus 100 is specifically described by first stamping a sheet metal into a flat, unitary member that includes the throttle plate 110, the upper plate 82, the first and

second gussets

84, 86, and the gasket 88. Next, the first corner panel 84 is bent in a first direction along the fold line 92 of the upper panel 82 and the second corner panel 86 is bent in an opposite second direction along the fold line 94 of the upper panel 82 to form a bifurcated structure. Gasket 88 is then bent into a substantially horizontal plane. The throttle plate 110 is finally bent at an angle to the vertical direction (i.e., the flow direction of the lubricating oil) to cover the first lubricating oil supply passage 62. The lubricating oil supply device 100 according to the first embodiment of the present disclosure may be made of a single thin metal plate through a stamping process and a folding process, so that it is possible to simplify the manufacturing process and save material consumption.

Curves a and B of fig. 6 show changes in the amount of oil supply for different rotation shaft speeds in the scroll compressor to which the lubricating oil supply device 80 according to the comparative example is applied and the scroll compressor to which the lubricating oil supply device 100 according to the first embodiment of the present disclosure is applied, respectively. As shown in fig. 6, the oil supply amount of the scroll compressor to which the lubricating oil supply device according to the comparative example is applied and the scroll compressor to which the lubricating oil supply device according to the first embodiment of the present disclosure is applied are substantially the same when the rotating shaft of the compressor is operated at a low speed. The oil supply amount of the scroll compressor to which the lubricating oil supply device according to the comparative example is applied is significantly increased with the increase in the rotation speed and may be as high as about 60g/s when the rotation speed of the rotating shaft of the compressor is increased, whereas the oil supply amount of the scroll compressor to which the lubricating oil supply device according to the first embodiment of the present disclosure is applied is increased at a relatively slow speed increase after reaching about 25g/s and the maximum oil supply amount is about 30 g/s. It can thus be seen that the lubricating oil supply device according to the present disclosure can ensure the supply of a sufficient amount of lubricating oil at low rotational speeds of the rotating shaft, and significantly reduce the amount of oil supply at high rotational speeds, thereby avoiding the supply of an excessive amount of lubricating oil to the compressor components, thereby improving the performance of the compressor.

Referring to fig. 7-8 c, a lubrication oil supply device 200 according to a second embodiment of the present disclosure is provided. The lubricating oil supply device 200 includes a throttle plate, an upper plate 82, a first gusset plate 84 and a second gusset plate 86, and a gasket 88, similarly to the lubricating oil supply device 100 according to the first embodiment of the present disclosure, except that a separate first throttle plate 210 and a second throttle plate 212 are used in the lubricating oil supply device 200 instead of the integrated throttle plate 110, and the first throttle plate 210 and the second throttle plate 212 are connected to the upper plate 82 by a first connecting portion 220 and a second connecting portion 222, respectively. A through hole 214 allowing outflow of lubricating oil is formed between the first throttle plate 210 and the second throttle plate 212.

Referring to fig. 8c, a method of manufacturing the lubricating oil supply device 200 will be specifically described, and similar to the above-described method of manufacturing the lubricating oil supply device 100 according to the first embodiment of the present disclosure, a flat integral part is first formed by stamping a metal thin plate, the flat integral part including the first and

second throttle plates

210 and 212, the upper plate 82, the first and

second corner plates

84 and 86, and the gasket 88, wherein the first and

second throttle plates

210 and 212 are connected with the first and

second connection portions

220 and 222, respectively. Next, the first corner panel 84 is bent in a first direction along the fold line 92 of the upper panel 82 and the second corner panel 86 is bent in a second direction opposite the first direction along the fold line 94 of the upper panel 82 to form a bifurcated structure. Gasket 88 is then bent into a substantially horizontal plane. Thereafter, the first connecting portion 220 is bent in the second direction along the folding line 96 of the upper panel 82, and the second connecting portion 222 is bent in the first direction along the folding line 98 of the upper panel 82. Finally, the first throttle plate 210 is bent in the first direction along the fold line 224 of the first connection 220, and the second throttle plate 212 is bent in the second direction along the fold line 226 of the second connection 222, thereby forming the through-hole 214 between the first throttle plate 210 and the second throttle plate 212. As shown in fig. 8a-8c, the first throttle plate 210 and the second throttle plate 212 are axially offset from each other, thereby allowing the entire oil supply device to be made from a single piece of thin metal plate. Since the lubricating oil supply device 100 according to the second embodiment of the present disclosure can be made of a single piece of thin metal plate through a punching process and a folding process, it is possible to simplify the manufacturing process and save material consumption. Here, it should be noted that although fig. 8a-8c illustrate the first and

second throttle plates

210 and 212 forming square holes, the present disclosure is not so limited and circular holes, rectangular holes, or any other suitable shape may be formed.

Fig. 9 shows a partial sectional view of a compressor to which a lubricating oil feeding device 300 according to a third embodiment of the present disclosure is applied. The lubricating oil supply device 300 according to the third embodiment of the present disclosure includes the throttle plate 110, the upper plate 82, the first and

second corner plates

84 and 86, and the gasket 88, similarly to the lubricating oil supply device 100 according to the first embodiment of the present disclosure, except that the throttle plate 110 is disposed separately from the upper plate 82 and fixed within the first lubricating oil supply passage 62. For example, throttle plate 110 may be secured within first lubrication supply passage 62 by an interference fit.

Fig. 10 shows a partial sectional view of a compressor to which a lubricating oil feeding device 400 according to a fourth embodiment of the present disclosure is applied. As shown in fig. 10, the lubricating oil supply device 400 according to the fourth embodiment of the present disclosure includes two lubricating oil supply devices 80 arranged in this order. Specifically, as shown in fig. 10, the upper-side lubricating oil feeding device is inverted, specifically, the upper plate of the upper-side lubricating oil feeding device 80 is disposed on the lower side and is therefore also referred to as a base 92, and the first and second gussets of the upper-side lubricating oil feeding device 80 extend upward from the base, which are referred to herein as third and

fourth gussets

94 and 96, and a gasket 98 is disposed on the upper sides of the third and

fourth gussets

94 and 96. The third and

fourth gussets

94, 96 may extend in different directions to form a bifurcated structure, and the gasket 98 may define an aperture 99 that allows the flow of lubrication oil therethrough. In the lubricating oil supply device 400 according to the fourth embodiment of the present disclosure, when the lubricating oil flows in the first lubricating oil supply passage 62 to the gasket 98, the force of the lubricating oil pumping up is reduced by the blocking action of the gasket 98, whereby the upper side lubricating oil supply device can function as the throttle mechanism and the gasket 98 thereof can function as the throttle plate.

The lubricating oil supply device applied to the scroll compressor is exemplarily described above, but it should be understood by those skilled in the art that the lubricating oil supply device according to the present disclosure may also be applied to other apparatuses having a lubricating oil supply passage, and the lubricating oil supply device according to the present disclosure is particularly suitable for various rotating machines having a rotating shaft.

Although various embodiments of the present disclosure have been described in detail herein, it is to be understood that the disclosure is not limited to the particular embodiments described and illustrated in detail herein, and that other modifications and variations may be effected by one skilled in the art without departing from the spirit and scope of the disclosure. All such variations and modifications are intended to fall within the scope of the present disclosure. Moreover, all the components described herein may be replaced by other technically equivalent components.

Claims

1. A lubrication oil supply apparatus (100, 200) comprising:

an upper plate (82);

a first gusset panel (84) and a second gusset panel (86) extending downward from the upper panel; and

a gasket (88) disposed below the first and second gussets and defining a first hole (89) that allows inflow of lubrication oil;

characterized in that the lubricating oil supply device further comprises a throttle member (110, 210) connected to the upper plate above the upper plate and defining a second hole (112, 214) allowing the lubricating oil to flow out, the throttle member being configured to restrict the flow rate of the lubricating oil flowing through the second hole.

2. The lubrication oil supply device (100) according to claim 1,

the throttle member includes a throttle plate (110) having an annular body and a connecting portion (120) connecting the throttle plate to the upper plate, the throttle plate defining the second bore.

3. The lubrication oil supply device (200) according to claim 1,

the throttle member includes a first throttle plate (210) and a second throttle plate (212) having opposing each other and a first connecting portion (220) and a second connecting portion (222) respectively connecting the first throttle plate and the second throttle plate to the upper plate, the first throttle plate and the second throttle plate defining the second bore (214) therebetween.

4. The lubrication oil supply device (200) according to claim 3,

the first throttle plate (210) and the second throttle plate (212) are offset from each other in position in the longitudinal direction of the lubricating oil supply device.

5. The lubrication oil supply device (100, 200) according to any one of claims 1-4,

the first gusset (84) and the second gusset (86) extend in different directions from the upper plate such that the first gusset and the second gusset form a bifurcated structure, and at least one of the first gusset and the second gusset is connected to the gasket at an end opposite to an end extending from the upper plate.

6. A rotary machine including a rotary shaft (60) having a lubricant supply passage (62, 64) provided along an axial direction of the rotary shaft and having a first axial end portion and a second axial end portion, and a lubricant supply device (100, 200, 300, 400) provided in the lubricant supply passage, lubricant flowing in a direction from the first axial end portion toward the second axial end portion,

the lubricating oil supply device includes: an upper plate (82); a first gusset (84) and a second gusset (86) extending from the upper plate toward the first axial end; a gasket (88) disposed closer to the first axial end than the first and second gussets and defining a first hole (89) that allows inflow of lubricating oil,

characterized in that the lubricating oil supply device further comprises a throttle member disposed closer to the second axial end portion than the upper plate, the throttle member covering at least a portion of the lubricating oil supply passage (62, 64) and defining a second hole (112, 214, 99) allowing outflow of lubricating oil.

7. The rotary machine according to claim 6,

the throttle member is disposed separately from the upper plate (82), and the throttle member is fixed inside the lubricating oil supply passage (62, 64).

8. The rotary machine according to claim 7,

the restriction is formed by an annular body, or,

the throttle member includes a base (92), a third (94) and a fourth (96) gusset extending from the base toward the second axial end, and a throttle plate (98) defining the second aperture (99), the throttle plate being disposed closer to the second axial end than the third and fourth gussets, and the third and fourth gussets extending in different directions to form a bifurcated structure.

9. Rotating machine according to any one of claims 6 to 8,

the area of the second hole (112, 214, 99) is 0.3 to 0.7 times the area of the lubricant supply passage.

10. Rotating machine according to any one of claims 6 to 8,

the outer wall of the throttle member contacts the inner wall of the lubricant supply passage (62, 64).

11. Rotating machine according to any one of claims 6 to 8,

12. Rotating machine according to any one of claims 6 to 8,

the lubricant supply device is disposed in the lubricant supply passage near the first axial end portion.

13. Rotating machine according to any of claims 6 to 8, wherein the rotating machine is an inverter type scroll compressor and a rotating shaft (60) of the scroll compressor is used for driving a compression mechanism (30) of the scroll compressor.