JP2000356187A - Hermetic motor-driven compressor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the noise of a hermetic compressor mounted in an electric refrigerator or the like. SOLUTION: In this compressor, refrigerating machine oil stagnated in an upper surface of a cylinder block 9 uniformly flow out of a release part 13 of the refrigerating machine oil by an effect of a refrigerating machine oil drop preventing wall 12. At this time, the arranged position of the release part 13 of the refrigerating machine oil, enables the control of the route of the refrigerating machine oil returning to a bottom part of a hermetic vessel. In this way, a drop of the oil from an edge part of the cylinder block 9 is prevented, and generation of a collision sound generated by collision against a splash sprung by rotation of a supply oil pipe can be avoided. Accordingly, the noise of the compressor can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hermetic electric compressor mounted on an electric storage or the like.

[0002]

2. Description of the Related Art In recent years, a hermetic electric compressor (hereinafter referred to as a compressor) has been required to have a quiet operation sound, and various noises generated inside the compressor have been improved. I have.

Hereinafter, an example of a conventional compressor will be described with reference to the drawings.

FIGS. 9 and 10 show a conventional compressor. Reference numeral 51 denotes an airtight container, 52 denotes a compression element elastically supported in the airtight container 51, and 53 denotes an electric element disposed above the compression element 52.

Reference numeral 54 denotes a crankshaft that is rotationally driven by an electric element 53, 55 denotes an oil supply pipe attached to the lower end of the crankshaft 54, 56 denotes refrigerating machine oil sealed in a closed container 51, and 58 denotes a crankshaft 54 Reference numeral 59 denotes a cylinder block.

[0006] Regarding the compressor configured as described above,
The operation will be described below.

[0007] An oil supply pipe 55 having a centrifugal pump section 55a attached to the lower end of a crankshaft 54 driven to rotate by an electric element 53 rotates in refrigerating machine oil 56 sealed in a closed vessel 51, and the pump is used for the pump. By operation, the refrigerator oil 56 is pumped from the opening 61.

[0008] The pumped refrigerating machine oil 56 passes through an oil hole provided inside the crankshaft 54 and an oil groove 54c provided on the outer periphery of the crankshaft 54, and a thrust portion provided at the upper end of the main bearing portion 58. The gas is discharged to the outside of the main bearing portion 58 from the 58a and the V groove portion 58b.

The refrigerating machine oil 56 discharged to the outside of the main bearing portion 58 passes through the outer wall portion 58c of the main bearing portion 58 and the upper surface of the cylinder block 59 and drops as oil droplets from the edges to drop into the closed container 51. Return to the bottom.

[0010]

However, in the above configuration, the oil droplets dropped from the edge collide with the oil level of the refrigerating machine oil 56 sealed in the bottom of the closed vessel 51. or,
The dropped oil droplets collide with splashes of the refrigerating machine oil 56 splashed by the rotation of the oil supply pipe 55.

The collision noise generated at this time has a problem of increasing the noise of the compressor.

The present invention has been made in view of the above problems, and has as its object to provide a compressor with low noise.

[0013]

According to the present invention, there is provided a cylinder block having a refrigerator oil dripping prevention wall and a refrigerator oil discharge section.

[0014] Thus, it is possible to prevent oil droplets from dropping from the edge of the cylinder block, and to collide with the oil droplets and the refrigerating machine oil sealed in the closed container, and to repel the refrigerating machine oil splashed by the oil droplets and the rotation of the oil supply pipe. The generation of sound due to the collision of droplets can be prevented, and the noise of the compressor can be reduced.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention comprises a cylinder block provided with a refrigerating machine oil drip prevention wall and a refrigerating machine oil discharging section, wherein the refrigerating machine oil flows out of the refrigerating machine oil discharging section. Has an action.

According to a second aspect of the present invention, the cylinder block is provided with one or more refrigerating machine oil discharge vertical holes. It has the effect of suppressing harsh and non-uniform noises such as collision sounds.

According to a third aspect of the present invention, a substantially annular refrigerating machine oil flow control wall is provided around a refrigerating machine oil discharge vertical hole, and by controlling the flow direction of the refrigerating machine oil to be constant, the oil is controlled. It has the effect of suppressing harsh and non-uniform noises such as dropping sounds and collision sounds.

According to a fourth aspect of the present invention, a refrigerating machine oil flow control groove communicating with a refrigerating machine oil discharge vertical hole is provided. It has the effect of suppressing harsh and non-uniform noise such as sound and collision noise.

According to a fifth aspect of the present invention, there is provided a refrigerating machine oil wherein the lower end of the refrigerating machine oil discharge vertical hole is located above the support spring receiving portion and the lower end of the refrigerating machine oil discharging vertical hole reaches the support spring receiving portion. This is provided with a flow control inclined portion, and has an effect of suppressing unpleasant and uneven noise such as a drop sound of an oil droplet and a collision sound by the refrigerating machine oil being transmitted down the support spring.

According to a sixth aspect of the present invention, there is provided a refrigerating machine oil discharge pipe having one end opened to the refrigerating machine oil discharge vertical hole and the other end opened to the refrigerating machine oil. Flowing down through the discharge pipe has an effect of suppressing unpleasant and non-uniform noise such as oil drop sound and collision sound.

According to a seventh aspect of the present invention, there is provided a refrigerating machine oil discharging spring having one end connected to a refrigerating machine oil discharging vertical hole and the other end immersed in the refrigerating machine oil. It has the effect of suppressing unpleasant uneven noise such as oil drop sound and collision sound by suppressing the unpleasant uneven noise such as oil drop sound and collision sound by transmitting down the machine oil discharge spring. .

According to an eighth aspect of the present invention, a cylinder oil supply vertical hole is provided at an upper portion of the cylinder portion, and when the refrigerating machine oil flows into the cylinder portion, noise such as a drop sound of an oil droplet and a collision sound are generated. It has an effect of suppressing an uneven noise.

According to a ninth aspect of the present invention, a lower end portion of the refrigerating machine oil discharge vertical hole is located above the cylinder portion, and a cylinder oil supply inclined portion extending from the lower end portion of the refrigerating machine oil discharge vertical hole to the cylinder portion is provided. The refrigerating machine oil has an effect of suppressing unpleasant and non-uniform noise such as a dropping sound of an oil droplet and a collision sound by flowing into a cylinder portion.

[0024]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

(Embodiment 1) FIG. 1 is a longitudinal sectional view of a compressor of the present invention, and FIG. 2 is a perspective view of a main part of FIG.

1 and 2, reference numeral 1 denotes a closed container, 2
Is a compression element, 3 is an electric element, 4 is a crankshaft constituting the compression element 2, and includes a main shaft portion 4a and a main shaft portion 4a.
a of the eccentric shaft portion 4b located below the a.

Reference numeral 6 denotes a refrigerating machine oil that is sealed in the closed container 1 and stored in the bottom 1a of the closed container 1. Reference numeral 5 denotes an oil supply pipe attached to the lower end of the crankshaft 4 and has a centrifugal pump 5a and an opening 11.

The opening 11 is open to the refrigerating machine oil 6 stored in the bottom 1a of the sealed container 1. The refrigerating machine 6 supplies the refrigerating machine oil 6 to the oil groove 4c through the oil hole 10 of the crankshaft 4 through the oil supply pipe 5. I have.

Reference numeral 9 denotes a cylinder block constituting the compression element 2, which has a main bearing portion 8, a support spring receiving portion 14, and a cylinder portion 15. At the upper end of the main bearing portion 8, a thrust portion 8a and a V groove portion 8b are provided. Is provided.

Reference numeral 12 denotes a refrigerating machine oil drip prevention wall provided on the peripheral edge of the upper surface of the cylinder block 9, and reference numeral 13 denotes a refrigerating machine oil discharge unit formed of a cutout or a recess provided in a part of the drip prevention wall 12.

Reference numeral 21 denotes a support spring, which
And the electric element 3 are elastically supported inside the closed container 1.

In the above configuration, the crankshaft 4 is rotated by the action of the electric element 3 to rotate the oil supply pipe 5 attached to the lower end. The oil supply pipe 5 rotates in the refrigerating machine oil 6, and the refrigerating machine oil 6 is supplied to an oil groove 4 c formed on the outer periphery of the main shaft 4 through the oil hole 10 by the pumping action of the centrifugal pump unit 5 a.

The refrigerating machine oil 6 supplied to the oil groove 4c is supplied to the thrust portion 8a and the V groove portion 8 provided at the upper end of the main bearing portion 8.
b, and is transmitted down the outer wall portion 8c, and stays on the upper surface of the cylinder block 9 by the refrigerating machine oil drip prevention wall 12.

The accumulated refrigerating machine oil 6 is supplied to the refrigerating machine oil discharging unit 1.
It flows out of 3 uniformly. At this time, it is possible to control the route in which the refrigerating machine oil 6 returns to the bottom 1 a of the closed casing 1 by the arrangement position of the refrigerating machine oil discharge unit 13.

Thus, it is possible to prevent oil droplets from dropping from the edge of the cylinder block 9 and to avoid the generation of a collision sound generated by the collision with the splash splashed by the rotation of the oil supply pipe 5. Therefore, the noise of the compressor can be reduced.

(Embodiment 2) According to another embodiment, as shown in FIG. 3, the refrigerating machine oil discharging portion is one or more refrigerating machine oil discharging vertical holes 16 provided in the cylinder block 9.

In the above-described configuration, it is possible to control the route in which the refrigerating machine oil 6 returns to the bottom 1a of the closed casing 1 depending on the arrangement position.

Thus, it is possible to prevent oil droplets from dropping from the edge of the cylinder block 9 and to avoid the generation of a collision sound generated by the collision with the splash splashed by the rotation of the oil supply pipe 5. Therefore, the noise of the compressor can be reduced.

(Embodiment 3) According to another embodiment, as shown in FIGS. 3 and 4, a substantially annular refrigerating machine oil flow control wall 17 is provided around a refrigerating machine oil discharge vertical hole 16.

In the above-described configuration, the inflow position of the refrigerating machine oil 6 can be guided to the refrigerating machine oil discharge vertical hole 16, and as a result, the outflow direction from the refrigerating machine oil discharge vertical hole 16 can be controlled.

Therefore, the refrigerating machine oil 6 depends on the arrangement position.
It is possible to more reliably control the path that returns to the bottom 1a of the closed container 1.

Thus, it is possible to prevent oil droplets from dropping from the edge of the cylinder block 9 and to avoid the generation of a collision sound generated by the collision with the splash splashed by the rotation of the oil supply pipe 5. Therefore, the noise of the compressor can be reduced.

(Embodiment 4) According to another embodiment, as shown in FIGS. 3 and 4, a refrigerator oil flow control groove 18 communicating with the refrigerator oil discharge vertical hole 16 is provided.

In the above configuration, it is possible to control the inflow position of the refrigerating machine oil 6 into the refrigerating machine oil discharge vertical hole 16, and as a result, it is possible to control the outflow direction from the refrigerating machine oil discharge vertical hole 16.

Therefore, the refrigerating machine oil 6 depends on the arrangement position.
It is possible to more reliably control the path that returns to the bottom 1a of the closed container 1.

Thus, it is possible to prevent oil droplets from dropping from the edge of the cylinder block 9 and to avoid the generation of collision sound generated by collision with the splash splashed by the rotation of the oil supply pipe 5. Therefore, the noise of the compressor can be reduced.

(Embodiment 5) According to another embodiment, as shown in FIG. 3, the lower end of the refrigerating machine oil discharge vertical hole 16 is located above the support spring receiving portion 14, and the refrigerating machine oil discharge vertical hole 16 is provided. From the lower end of the support spring receiving part 1
4 is provided.

In the above-described configuration, the refrigerating machine oil 6 flowing out from the lower end of the refrigerating machine oil discharge vertical hole 16 flows through the refrigerating machine oil flow control inclined portion 23 to flow therethrough.
4 and fall down to the support spring 21 and return to the bottom 1 a of the sealed container 1.

Thus, it is possible to prevent oil droplets from dropping from the edge of the cylinder block 9 and to avoid the generation of collision noise generated by collision with the splash splashed by the rotation of the oil supply pipe 5. Therefore, the noise of the compressor can be reduced.

(Embodiment 6) According to another embodiment, as shown in FIG. 5, a refrigerating machine oil discharge pipe 19 having one end opened to the refrigerating machine oil discharging vertical hole 16 and the other end opened to the refrigerating machine oil 6 is provided. It is provided.

In the above configuration, the refrigerating machine oil 6 flowing into the refrigerating machine oil discharge pipe 19 falls inside the refrigerating machine oil discharge pipe 19 and returns to the bottom 1 a of the closed casing 1.

Thus, it is possible to prevent oil droplets from dropping from the edge of the cylinder block 9 and to avoid the generation of a collision sound generated by the collision with the splash splashed by the rotation of the oil supply pipe 5. Therefore, the noise of the compressor can be reduced.

(Embodiment 7) According to another embodiment, as shown in FIG. 6, one end is connected to the refrigerating machine oil discharge vertical hole 16 and the other end is refrigerating machine oil discharging spring 20 immersed in the refrigerating machine oil 6. It is provided with.

In the above-described configuration, the refrigerating machine oil 6 flowing into the refrigerating machine oil discharging vertical hole 16 travels down the refrigerating machine oil discharging spring 20 and returns to the bottom 1 a of the closed casing 1.

As a result, it is possible to prevent oil droplets from dropping from the edge of the cylinder block 9 and to avoid the generation of collision noise generated by collision with the splash splashed by the rotation of the oil supply pipe 5. Therefore, the noise of the compressor can be reduced.

(Embodiment 8) According to another embodiment, as shown in FIG. 7, the cylinder oil supply vertical hole 22 is provided above the cylinder portion 15.

In the above configuration, the refrigerating machine oil 6 flowing into the cylinder oil supply vertical hole 22 is supplied to the cylinder unit 15.

Thus, it is possible to prevent oil droplets from dropping from the edge of the cylinder block 9 and to avoid the generation of collision sound generated by collision with the splash splashed by the rotation of the oil supply pipe 5. Therefore, the noise of the compressor can be reduced. Further, it is possible to improve the lubricity of the outer peripheral portion of the piston 25 and prevent the leakage of the compressed gas.

(Embodiment 9) According to another embodiment, as shown in FIG. 8, the lower end of the refrigerating machine oil discharge vertical hole 16 is located above the cylinder portion 15, and the lower end of the refrigerating machine oil discharge vertical hole 16 is provided. A cylinder oil supply inclined portion 24 extending from the cylinder portion 15 to the cylinder portion 15 is provided.

In the above configuration, the refrigerating machine oil 6 flowing into the refrigerating machine oil discharge vertical hole 16 is supplied to the cylinder refueling inclined portion 2.
4 and is supplied to the cylinder portion 15.

Thus, it is possible to prevent oil droplets from dropping from the edge of the cylinder block 9 and to avoid the generation of collision sound generated by collision with the splash splashed by the rotation of the oil supply pipe 5. Therefore, the noise of the compressor can be reduced. Further, it is possible to improve the lubricity of the outer peripheral portion of the piston 25 and prevent the leakage of the compressed gas.

[0062]

As is apparent from the above embodiment, according to the first aspect of the present invention, the refrigerating machine oil retained on the upper surface of the cylinder block by the effect of the refrigerating machine oil dripping preventing wall is discharged from the refrigerating machine oil discharging portion by one. Flows out like this. At this time, it is possible to control the route in which the refrigerating machine oil returns to the bottom of the closed container by the arrangement position of the refrigerating machine oil discharge unit.

Thus, it is possible to prevent oil droplets from dropping from the edge of the cylinder block, and to avoid the generation of collision noise generated by collision with the splash splashed by the rotation of the oil supply pipe. Therefore, an advantageous effect that the noise of the compressor can be reduced can be obtained.

Further, according to the second aspect of the present invention, it is possible to control the route in which the refrigerating machine oil returns to the bottom of the sealed container by the arrangement position of one or more refrigerating machine oil discharge vertical holes provided in the cylinder block. It becomes possible.

As a result, it is possible to prevent oil droplets from dropping from the edge of the cylinder block, and to avoid the generation of collision noise generated by collision with the splash splashed by the rotation of the oil supply pipe. Therefore, an advantageous effect that the noise of the compressor can be reduced can be obtained.

According to the third aspect of the present invention, by providing a substantially annular refrigerating machine oil flow control wall around the refrigerating machine oil discharging vertical hole, the inflow position of the refrigerating machine oil into the refrigerating machine oil discharging vertical hole is controlled. As a result, the outflow direction from the refrigerator oil discharge vertical hole can be controlled.

Therefore, it is possible to more reliably control the route in which the refrigerating machine oil returns to the bottom of the closed container depending on the arrangement position.

Thus, it is possible to prevent oil droplets from dropping from the edge of the cylinder block, and to avoid the generation of collision sound generated by collision with the splash splashed by the rotation of the oil supply pipe. Therefore, an advantageous effect that the noise of the compressor can be reduced can be obtained.

According to the fourth aspect of the present invention, by providing the refrigerating machine oil flow control groove communicating with the refrigerating machine oil discharging vertical hole, it is possible to control the inflow position of the refrigerating machine oil into the refrigerating machine oil discharging vertical hole. As a result, it is possible to control the outflow direction from the refrigerator oil discharge vertical hole.

Therefore, it is possible to more reliably control the route in which the refrigerating machine oil returns to the bottom of the closed container depending on the arrangement position.

Thus, it is possible to prevent oil droplets from dripping from the edge of the cylinder block, and to avoid the generation of collision sound generated by collision with the splash splashed by the rotation of the oil supply pipe. Therefore, an advantageous effect that the noise of the compressor can be reduced can be obtained.

According to the fifth aspect of the present invention, the lower end of the refrigerator oil discharge vertical hole is located above the support spring receiving portion, and the lower end of the refrigerator oil discharge vertical hole extends from the lower end of the refrigerator oil discharge vertical hole to the support spring receiving portion. By providing the refrigerating machine oil flow control inclined part, the refrigerating machine oil flowing out from the lower end of the refrigerating machine oil discharge vertical hole flows down the refrigerating machine oil flow control inclined part, is transmitted from the support spring receiving part to the support spring, and falls down, and Return to the bottom.

Thus, it is possible to prevent oil droplets from dropping from the edge of the cylinder block, and to avoid the generation of collision noise generated by collision with the splash splashed by the rotation of the oil supply pipe. Therefore, an advantageous effect that the noise of the compressor can be reduced can be obtained.

According to the sixth aspect of the present invention, a refrigerant oil discharge pipe having one end opened to the refrigerator oil discharge vertical hole and the other end opened to the refrigerator oil is provided, so that the refrigerant oil flows into the refrigerator oil discharge pipe. The refrigerating machine oil falls inside the refrigerating machine oil discharge pipe and returns to the bottom of the sealed container.

As a result, it is possible to prevent oil droplets from dropping from the edge of the cylinder block, and to avoid the generation of collision noise generated by collision with the splash splashed by the rotation of the oil supply pipe. Therefore, an advantageous effect that the noise of the compressor can be reduced can be obtained.

According to the present invention, a refrigerating machine oil discharging spring having one end connected to the refrigerating machine oil discharging vertical hole and the other end immersed in the refrigerating machine oil is provided.
The refrigerating machine oil that has flowed into the refrigerating machine oil discharge vertical hole travels down the refrigerating machine oil discharging spring and returns to the bottom of the closed container.

Thus, it is possible to prevent oil droplets from dropping from the edge of the cylinder block, and to avoid the generation of collision noise generated by collision with the splash splashed by the rotation of the oil supply pipe. Therefore, an advantageous effect that the noise of the compressor can be reduced can be obtained.

According to the eighth aspect of the present invention, by providing the cylinder oil supply vertical hole at the upper part of the cylinder portion, the refrigerating machine oil flowing into the cylinder oil supply vertical hole is supplied to the cylinder portion.

As a result, it is possible to prevent oil droplets from dropping from the edge of the cylinder block and to avoid the generation of collision noise generated by collision with the splash splashed by the rotation of the oil supply pipe. Therefore, the noise of the compressor can be reduced. Further, the advantageous effects of improving the lubricity of the outer peripheral portion of the piston and preventing leakage of the compressed gas can be obtained.

According to the ninth aspect of the present invention, the lower end portion of the refrigerator oil discharge vertical hole is located above the cylinder portion, and the cylinder oil supply inclined portion extending from the lower end portion of the refrigerator oil discharge vertical hole to the cylinder portion is formed. With this arrangement, the refrigerating machine oil that has flowed into the refrigerating machine oil discharge vertical hole is supplied to the cylinder portion along the cylinder oil supply inclined portion.

Thus, it is possible to prevent oil droplets from dropping from the edge of the cylinder block, and to avoid the generation of collision sound generated by collision with splashes splashed by the rotation of the oil supply pipe. Therefore, the noise of the compressor can be reduced. Further, the advantageous effects of improving the lubricity of the outer peripheral portion of the piston and preventing leakage of the compressed gas can be obtained.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a hermetic electric compressor according to Embodiment 1 of the present invention.

FIG. 2 is an exploded perspective view of a main part of the compressor.

FIG. 3 is a sectional view of a main part of a compressor according to Embodiments 2 to 4 of the present invention.

FIG. 4 is a top view of a cylinder block according to another embodiment of the present invention.

FIG. 5 is a sectional view of a main part according to another embodiment of the present invention.

FIG. 6 is a sectional view of a main part according to another embodiment of the present invention.

FIG. 7 is a sectional view of a main part according to another embodiment of the present invention;

FIG. 8 is a sectional view of a main part according to another embodiment of the present invention.

FIG. 9 is a longitudinal sectional view showing a conventional compressor.

FIG. 10 is a perspective view of a main part of FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Closed container 2 Compression element 3 Electric element 4 Crankshaft 4a Main shaft part 4b Eccentric shaft part 5 Oil supply pipe 6 Refrigeration oil 8b V groove part 8c Outer wall part 9 Cylinder block 11 Opening 12 Refrigeration oil dripping prevention wall 13 Refrigeration oil discharge part 14 Support Spring receiving part 15 Cylinder part 16 Refrigerator oil discharge vertical hole 17 Refrigerator oil flow control wall 18 Refrigerator oil control groove 19 Refrigerator oil discharge pipe 20 Refrigerator oil discharge spring 21 Support spring 22 Cylinder oil supply vertical hole 23 Refrigerator oil flow control inclined part 24 Cylinder oil supply inclination Department

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Manabu Modegi 4-5-2-5 Takaida Hondori, Higashi-Osaka City, Osaka Inside Matsushita Refrigerating Machinery Co., Ltd. 2-5 Matsushita Refrigeration Machinery Co., Ltd. (72) Inventor Maiko Kawabata 4-2-5 Takaida Hondori, Higashi Osaka City, Osaka Prefecture Matsushita Refrigeration Machinery Co., Ltd. F-term (reference) 3H003 AA02 AB04 AC03 BD03 BD04

Claims (9)

[Claims] 1. A compression element elastically supported via a support spring and an electric element disposed in a closed container, wherein the compression element includes a crankshaft including a main shaft portion and an eccentric shaft portion driven to rotate by the electric element. A piston is provided that reciprocates in the cylinder block via a connecting rod connected to the shaft and the eccentric shaft, and an oil supply pipe communicating with an oil groove formed on the outer periphery of the crankshaft is provided at a lower end of the crankshaft. And the oil supply pipe opens and rotates in refrigerating machine oil enclosed in the closed container,
A hermetic electric compressor in which the cylinder block is provided with a refrigerating machine oil drip prevention wall, a refrigerating machine oil discharge section, a support spring receiving section, a cylinder section, and a main bearing section. 2. The hermetic electric compressor according to claim 1, wherein the refrigerating machine oil discharging portion is one or more refrigerating machine oil discharging vertical holes provided in the cylinder block. 3. The hermetic electric compressor according to claim 2, wherein a substantially annular refrigerator oil flow control wall is provided around the refrigerator oil discharge vertical hole. 4. The hermetic electric compressor according to claim 2, wherein a refrigerator oil flow control groove communicating with the refrigerator oil discharge vertical hole is provided. 5. A refrigerating machine oil discharge vertical hole is provided above a support spring receiving portion, and a refrigerating machine oil flow control inclined portion from the lower end of the refrigerating machine oil discharging vertical hole to the supporting spring receiving portion is provided. 3. The hermetic electric compressor according to claim 2, wherein: 6. The hermetic electric compressor according to claim 2, further comprising a refrigerating machine oil discharge pipe having one end opened to the refrigerating machine oil discharge vertical hole and the other end opened to the refrigerating machine oil. 7. The hermetic electric compressor according to claim 2, further comprising a refrigerating machine oil discharge spring having one end connected to the refrigerating machine oil discharge vertical hole and the other end immersed in the refrigerating machine oil. 8. The hermetic electric compressor according to claim 1, wherein a vertical cylinder oil supply hole is provided in an upper portion of the cylinder portion. 9. The refrigerating machine oil discharge vertical hole has a lower end located above the cylinder portion, and a cylinder oil supply inclined portion extending from the lower end of the refrigerating machine oil discharge vertical hole to the cylinder portion is provided. Item 3. A hermetic electric compressor according to Item 2.