KR100315795B1 - Filth container for scroll compressor - Google Patents

Abstract

The present invention relates to a waste storage device of a scroll compressor, and in particular, by forming an oil reservoir in which oil is stored in the oil pump in the oil pump for supplying oil so that dirt does not flow into the bearing part, thereby reducing the wear of the mechanism part. The present invention relates to a FILTH CONTAINER for scroll compressor that can extend the life of the system and prevent failure.

The present invention as described above is formed on one side of the pump cover so that the oil flowing into the pump cover to the bearing portion through the sub-frame is discharge connection passage for guiding oil to the sub-frame; The difference between the weight of the oil and the foreign matter passing through the discharge connection passage so as to prevent the foreign matter contained in the oil is supplied to the bearing portion and damage to the bearing portion formed on one side of at least one of the pump cover and the sub-frame A sewage reservoir and stored intact by; It characterized in that it comprises a connecting passage for connecting the discharge connection passage and the waste reservoir to guide and transport the oil to the waste reservoir.

Description

Filth container for scroll compressor

The present invention relates to a waste storage device of a scroll compressor, and in particular, by forming an oil reservoir in which oil is stored in the oil pump in the oil pump for supplying oil so that dirt does not flow into the bearing part, thereby reducing the wear of the mechanism part. The present invention relates to a waste storage device of a scroll compressor which can extend the service life of the battery and prevent failure.

In general, a scroll compressor is a compressor for compressing a low pressure refrigerant gas and discharging it at a high pressure by causing the rotating scroll connected to a rotating shaft to revolve in a fixed state. In the above structure, the bearing parts are formed at each friction part to reduce friction, and the scroll compressor is provided with a pump device for supplying oil to the bearing part.

In recent years, the compressor is variably driven by outputting a frequency corresponding to each state without using a constant frequency for simply driving the compressor in an air conditioner or a refrigerator in which the compressor is used.

1 is a cross-sectional view of a conventional scroll compressor, FIG. 2 is a front view of a conventional scroll compressor oil pump, FIG. 3 is a sectional view taken along line EE shown in FIG. 2, and FIG. 4 is a diagram of a conventional scroll compressor oil pump. 5 is an operation view, FIG. 5 is a front view of a pump plate of a conventional scroll compressor, FIG. 6 is a front view of a pump cover of a conventional scroll compressor, FIG. 7 is a sectional view taken along line AA of FIG. It is sectional drawing by the BB line shown in FIG.

Conventional Scroll Compressor As shown in FIGS. 1 to 8, a shell 1, which is an outer case provided with a suction pipe 1a through which refrigerant gas is sucked, is welded to an upper end of the shell 1, An upper cap provided with a diaphragm 3 separating the low pressure side, and a discharge tube 2a welded to cover the diaphragm 3 to form a high pressure side together with the diaphragm 3 and through which a high-pressure refrigerant gas is discharged. (2), the lower cap (6) welded to the lower end of the shell (1), the fixed scroll (4) connected and fixed to the diaphragm (3) by a plurality of bolts, and through the suction pipe (1a) A rotating scroll (5) engaged with the fixed scroll (4) to revolve so as to compress the sucked refrigerant gas, a shaft (8) for transmitting a driving force to the rotating scroll (5), and a rotation in which the shaft (8) is press-fitted A stator 10 provided around the outside of the rotor 9 such that the electrons 9 and the rotor 9 are rotated by an induced current. ), The main frame 7 supporting the pivoting scroll 5 and the shaft 8 and the like, and the respective bearing parts 13 connected to the lower end of the shaft 8 to reduce frictional force generated during compression. , 14, 15, 16) is composed of an oil pump 20 for supplying oil.

Here, the shaft 8 has an oil supply hole 8a communicating with the oil pump 20 at a lower end thereof, and a plurality of supply holes 8b connected to the oil supply hole 8a are bearing parts 13. , 14, 15, 16). That is, the supply hole 8b includes a thrust bearing portion 13 between the fixed scroll 4 and the turning scroll 5, a journal bearing portion 14 between the turning scroll 5 and the shaft 8, Oil is supplied to the journal bearing portion 15 between the shaft 8 and the main frame 7 and the journal bearing portion 16 between the lower portion of the shaft 8 and the oil pump 20.

In addition, the oil pump 20 is installed to be immersed in the lower oil surface 11 of the shell 1, the shaft 8 is inserted and the cylinder 21a is formed so that the oil can be pumped at the same time The subframe 21 in which the discharge port 21d of the oil connected to the hole 8a is formed, and the shaft 8 is eccentric to the pump to forcibly pump oil into the cylinder 21a of the subframe 21. A pump roller 24 connected to the pump plate, a pump plate 22 installed to separate the inlet port 23a and the outlet port 21d of the oil from the lower part of the subframe 21, and the lower part of the pump plate 22. The suction port 23a is formed at the suction port, and the pump cover 23 is formed with a discharge connection passage 23b connected to the discharge port 21d.

In other words, the pump cover 23 is formed with a discharge connection passage 23b which is a connection passage between the suction port 23a through which the oil is sucked and the discharge port 21d of the oil discharged by the pump roller 24. The pump plate 22 has a suction hole 22a communicating with the suction port 23a and a discharge hole 22b connected to the discharge connection passage 23b. ), A suction port 21b communicating with the cylinder 21a and the suction hole 22a and a discharge port 21c connected to the discharge hole 22b are formed.

Referring to the operation of the scroll compressor according to the prior art configured as described above are as follows.

First, a low pressure refrigerant gas is sucked into the suction pipe 1a, and the sucked refrigerant gas is transferred between the swing scroll 5 and the fixed scroll 4.

At the same time, the rotor 9 starts to rotate by the induced current with the stator 10, so that the shaft 8 pushed into the rotor 9 rotates.

When the shaft 8 rotates, the swing scroll 5 revolves with the fixed scroll 4, and thus the refrigerant gas sucked between the swing scroll 5 and the fixed scroll 4 is It is compressed and discharged from the center portion of the fixed scroll (4), and discharged to a high pressure state through the discharge pipe (2a).

Meanwhile, in the oil pump 20, as shown in FIG. 4, the compression roller connected to the shaft 8 so as to be eccentrically engages with the subframe 21 and revolves in the compression chamber 21a. As the pump roller 24 revolves, oil is sucked into the cylinder 21a of the subframe 21 through the suction port 23a, the suction hole 22a, and the suction port 21b. The sucked oil is compressed by the pump roller 24 and discharged to the oil supply hole 8a through the suction port 21c, the discharge hole 22b, the discharge connection passage 23b, and the discharge port 21d. The oil discharged into the oil supply hole 8a is supplied to the bearing parts 13, 14, 15, and 16 through the supply hole 8b. In this case, since the oil is an incompressible fluid, the discharge valve is not provided and the pump roller 24 revolves to be immediately transferred to the discharge port 21d through the discharge port 21c.

Some of the oil supplied to the bearing parts 13, 14, 15, and 16 through the supply hole 8b is discharged through the discharge pipe 2a together with the refrigerant gas, and the rest of the oil is discharged to the recovery pipe 12. Through it is recovered to the lower part of the shell (1) again.

However, in the conventional scroll compressor, the pump roller 24 is connected to the shaft 8 and revolves in contact with the outer wall of the cylinder 21a of the subframe 21 so that the rotation of the shaft 8 is performed. When the pump roller 24 is idle and the scroll compressor is operated at a high frequency in proportion to the pump roller 24, the pump roller 24 also has a high rotational speed, so that foreign matters contained in the oil do not sink in the lower portion. It is supplied to the bearing portion 13, 14, 15, 16 together. Therefore, the foreign matter supplied to the bearing parts 13, 14, 15, and 16 has a problem that has a fatal effect on the reliability of the bearing parts (13, 14, 15, 16).

Of course, in order to prevent this, there is a case in which a magnet is installed on the bottom surface of the oil pump 20 or a mesh for filtering foreign matters in the moving passage of oil is installed. If only the foreign matter can be filtered out and the net is installed, the space for the net installation is not only narrow, but the spring must be fastened with bolts to prevent the net from being deformed. At the same time, the space becomes more narrow and the number of parts is required, resulting in a cost increase.

The present invention has been made in order to solve the above problems of the prior art, forming a dirt reservoir that can store the foreign matter of the oil on one side of the discharge port from which the oil is discharged from the oil pump, there is no increase in cost and at the same time the foreign matter of the oil It is an object of the present invention to provide a waste storage device of a scroll compressor that can filter the oil.

1 is a cross-sectional view of a conventional scroll compressor,

2 is a front view of a conventional scroll compressor oil pump,

3 is a cross-sectional view taken along line EE shown in FIG. 2;

4 is an operation of the conventional scroll compressor oil pump,

5 is a front view of a pump plate of a conventional scroll compressor,

6 is a front view of a pump cover of a conventional scroll compressor,

7 is a cross-sectional view taken along line AA of FIG. 6,

8 is a cross-sectional view taken along line BB shown in FIG. 6;

9 is a front view of a pump cover according to the first embodiment of the present invention;

10 is a cross-sectional view taken along line CC shown in FIG. 9;

11 is a sectional view of a pump cover according to a second embodiment of the present invention;

12 is a front view of a subframe according to a third embodiment of the present invention;

13 is a front view of a pump cover according to a third embodiment of the present invention;

14 is a front view of a pump plate according to a third embodiment of the present invention;

FIG. 15 is a cross-sectional view taken along line DD shown in FIGS. 11 to 14.

<Explanation of symbols on main parts of the drawings>

50, 73: pump cover 50a, 73a: inlet 50b, 73b: discharge connection passage 50c: reservoir connection passage 50d, 71e: dirt reservoir 71: subframe

71a: Cylinder 71b: Suction port 71c: Discharge port

71d: discharge port 72: pump plate 72a: suction hole

72b: discharge hole 72c: first connecting passage 73c: second connecting passage

The dirt storage device of the scroll compressor according to the present invention for achieving the object as described above is formed on one side of the pump cover so that the oil flowing into the pump cover can be supplied to the bearing portion through the sub-frame is oil A discharge connection passage leading to the air; The difference between the weight of the oil and the foreign matter passing through the discharge connection passage so as to prevent the foreign matter contained in the oil is supplied to the bearing portion and damage to the bearing portion formed on one side of at least one of the pump cover and the sub-frame A sewage reservoir and stored intact by; It is possible to be characterized in that it comprises a connecting passage for connecting the discharge connection passage and the waste reservoir to guide and transport the oil to the waste reservoir.

In addition, the connection passage is characterized in that the discharge connection passage side portion is formed to be inclined or rounded in the direction of the discharge connection passage so that dirt can easily flow into the waste storage.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

9 is a front view of a pump cover according to a first embodiment of the present invention, FIG. 10 is a cross-sectional view taken along line CC shown in FIG. 9, and FIG. 11 is a view of the pump cover according to a second embodiment of the present invention. 12 is a cross-sectional view of the pump cover, FIG. 12 is a front view of a subframe according to a third embodiment of the present invention, FIG. 13 is a front view of a pump cover according to a third embodiment of the present invention, and FIG. 14 is a third view of the present invention. It is a front view of the pump plate by an Example, and FIG. 15 is sectional drawing by the DD line | wire shown in FIGS.

The waste storage device of the scroll compressor according to the first embodiment of the present invention is connected to the discharge connection passage 50b at the same time as the suction port 50a and the discharge connection passage 50b are formed as shown in FIGS. It comprises a pump cover 50 in which the reservoir connection passage 50c and the dirt reservoir 50d are formed.

That is, the oil containing the foreign matter is sucked through the suction port 50a, and is transferred to the discharge port (not shown) by the pump roller (not shown) through the discharge connection passage 50b. Foreign matter begins to be transported with the oil when it is settled down by the weight difference with the oil or when the scroll compressor is operated at a high speed. At this time, foreign matters of the oil are introduced into the waste reservoir 50d through the reservoir connection passage 50c and accumulated at the bottom of the waste reservoir 50d, and the foreign matter once introduced into the soil reservoir 50d is separated from the oil reservoir 50d. Maintaining the stacked state on the floor by the difference in weight, the oil is removed is discharged again through the discharge port.

On the other hand, Figure 11 is a view showing a second embodiment according to the present invention, the discharge connection passage 50b side portion of the reservoir connection passage 60c formed on one side of the pump cover 60 is the discharge connection passage 50b As described above, when the inclination θ is formed on one side of the connection passage 60c, the dirt reservoir is more easily introduced into the dirt reservoir 60d. The working efficiency of 60d is increased.

Here, it is a matter of course that the same effect can be obtained by forming rounding without forming one side of the reservoir connection passage 60c to be inclined (θ).

Meanwhile, in the scroll storage device of the scroll compressor according to the third embodiment of the present invention, as illustrated in FIGS. 12 to 15, a dirt storage 71e is formed at one side of the subframe 71 and the pump plate 72 is provided. A first connection passage 72c connected to the waste reservoir 71e at the second connection passage 73c, and a second connection passage 73c communicating with the first connection passage 72c and the discharge connection passage 73b to the pump cover 73; ) To form.

That is, the oil and foreign matter sucked through the suction port 73a of the pump cover 73 pass through the suction hole 72a of the pump plate 72 and the suction port 71b of the sub-frame 71 to form a cylinder. After being sucked into the 71a, it passes through the discharge port 71c of the subframe 71 by the pressure of the revolution of the pump roller 74, and then through the discharge connection passage 73b At this time, the oil and the foreign matter are transferred to the dirt storage 71e through the second connection passage 73c and the first connection passage 72c, and the foreign matter is transferred to the weight difference with the oil. As a result, it is maintained at the bottom of the dirt storage 71e, and the oil from which the foreign matter is removed is discharged through the discharge port 71d. Of course, the first connection passage 72c and the second connection passage ( The part of the discharge connection passage 73b side of 73c is inclined toward the discharge connection passage 73b. Shop or foreign matter in the oil to form the rounded corners of the discharge passageway (73b) side portions can be readily introduced.

As such, the dirt storage device of the scroll compressor according to the present invention can filter foreign matters of oil with a simple structure, thereby providing an effect that no foreign matter flows into the bearing part even during a high speed operation of the scroll compressor.

Claims (2)

A discharge connection passage formed at one side of the pump cover to guide the oil flowing into the pump cover to the bearing unit through the subframe to guide the oil to the subframe; The difference between the weight of the oil and the foreign matter passing through the discharge connection passage so as to prevent the foreign matter contained in the oil is supplied to the bearing portion and damage to the bearing portion formed on one side of at least one of the pump cover and the sub-frame A sewage reservoir and stored intact by; And a connection passage connecting the discharge connection passage and the waste reservoir to guide and transport oil to the waste reservoir. The method of claim 1, The connection passage waste storage device of the scroll compressor, characterized in that the discharge connection passage side portion is formed to be inclined or rounded in the discharge connection passage direction so that dirt can easily flow into the waste storage.