KR19980023991A - compressor - Google Patents

Abstract

It is an object of the present invention to provide a high-performance compressor that can reduce the amount of oil discharge without causing oil shortage even if the compressor is inclined or foaming, and the compression element 20 and the transmission element 10 in the sealed container 1 are provided. ) And the oil retention chamber 1A and the sealed chamber 1B are partitioned by the partition member in the sealed container 1, and two oil pumps 42 are mounted on one end of the rotating shaft 13, Oil is sucked from the oil retention chamber 1A to one oil pump 42 and lubricated to the compression element 20 mounted at the other end of the rotary shaft 13, and from the closed chamber 1B to the other oil pump. The main point is to draw oil into (42) and to lubricate the oil retention chamber 1A described above.

Description

compressor

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compressor having an oil pump for lubricating a compression element, used in refrigerators and air conditioners.

Conventionally, in a vertical scroll compressor, as shown in FIG. 14, the oil of the oil retention portion 101 at the bottom of the compressor is passed through one oil pump 100 mounted at one end of the rotation shaft. It is configured to feed to a scroll compression element and bearing mounted on the other end.

When such a compressor is placed horizontally, the interior of the compressor is divided into a hermetic chamber 201 and a hermetic chamber 202 by the partition plate 205 as shown in FIG. 15 to make the hermetic chamber 202 an oil reservoir.

In addition, the oil pump 400 seals the oil compression pump or the shaft bearing to end the lubrication, and delivers the oil accumulated in the bottom portion of the sealed chamber 201 to the sealed chamber 202 via the pipe 203 to the sealed chamber 202. It consists of two pumps in total which pump the oil in the chamber 202 through the oil supply hole 414 of the rotating shaft 410, and the pump which lubricates each bearing part.

The oil pump 400 includes a housing 404 having a cylinder 415, a suction hole 402, and a discharge hole 403, and closing the opening of the cylinder 415 of the housing 404. A cover 401, a housing 407 having a cylinder 416 and a suction hole 409, covers 411 and 412 for closing an opening of the cylinder 416 of the housing 407, The partition plate which divides the rotor 405 which rotates in the cylinder 415 by the rotating shaft 410, the rotor 408 which rotates in the cylinder 416, and the cylinder 415 and the cylinder 416. It consists of 406.

In this way, the oil pump for feeding the oil in the sealed chamber 201 to the sealed chamber 202 via the pipe 203 and the oil in the sealed chamber 202 are compressed through the oil supply hole 414 of the rotating shaft 410. An oil pump for lubricating urea and bearing part is included.

In the case of the low pressure gas introduction type compressor in the hermetic container, the hermetic chamber or the inlet of the oil pump is installed in the lower part of the hermetic container.

In the case of the high pressure gas introduction type compressor in the sealed container, since oil accumulates in the low pressure part of the container, the inlet of the oil pump is provided in the closed chamber at the low pressure of the sealed container.

However, in the conventional horizontal scroll compressor, in the case of the low pressure gas introduction type compressor in the closed container, oil is diffused on one surface of the closed container, so it is easy to cause oil shortage when the compressor is inclined or foaming. There was a problem that the amount of oil discharge increased.

On the other hand, in the case of a high pressure gas introduction type compressor in a sealed container, since the low pressure part is near the discharge pipe which becomes the discharge gas outlet of the compressor, oil is easily discharged along with the discharge gas, and the oil discharge amount increases. there was.

In addition, the oil pump in the horizontal scroll compressor is an oil pump for supplying oil from the sealed chamber 201 to the sealed chamber 202 as described above, and lubricated from the sealed chamber 202 to the scroll compression element and the bearing part. Two oil pumps of the oil pump are required.

As a result, parts such as cylinders 404, 407, rotors 405, 408, covers 401, 406, 411, 412, etc. doubled and the price increased. There was also a problem.

An object of the present invention is to provide a high-performance compressor that can reduce oil discharge amount without causing oil shortage even if the compressor is inclined or foaming in the case of a low pressure gas introduction type compressor in a sealed container.

Another object of the present invention is to provide a compressor capable of effectively reducing the oil discharge amount even in a high pressure gas introduction type compressor in a sealed container.

In addition, an object of the present invention is to provide a compressor having an oil pump capable of supplying two systems of oil supply pump and oil supply pump without increasing the number of parts.

Figure 1 is a longitudinal side view showing the overall configuration of a horizontal scroll compressor of the embodiment of the present invention

2 is a longitudinal sectional side view showing the overall configuration of a horizontal scroll compressor according to another embodiment;

3 is a longitudinal side view showing the overall configuration of a horizontal scroll compressor according to still another embodiment;

Figure 4 is a cross-sectional view showing the overall configuration of a horizontal scroll compressor according to another invention

5 is a cross-sectional plan view at the completion of the discharge of the oil pump of the compressor of FIG.

6 is a cross-sectional plan view at the start of suction of the oil pump of FIG.

7 is a plan sectional view during the compression of the oil pump of FIG.

8 is a plan sectional view at the time of discharge of the oil pump of FIG.

9 is a cross-sectional plan view of the completion of the discharge of another oil pump of the compressor of FIG.

10 is a cross-sectional plan view at the start of suction of the oil pump of FIG.

FIG. 11 is a sectional plan view during compression of the oil pump of FIG.

12 is a plan sectional view at the time of discharge of the oil pump of FIG.

13 is a cross-sectional view of the oil pump of FIG.

Fig. 14 is a cross-sectional view showing the overall configuration of a vertical scroll compressor showing a conventional example.

Fig. 15 is a sectional view showing the overall configuration of a horizontal scroll compressor showing a conventional example.

16 is a sectional view of an oil pump showing a conventional example.

* Explanation of symbols on the main parts of the drawing

1. Airtight container 1A. Oil stay

1B. Enclosed Room 10. Electric Elements

13,340. Rotating shaft 20. Compression element

42, 370. Oil pumps 501, 607. Housings

502. Oval cylinders 503,602. First suction hole

504,603. First discharge hole 505,604. 2nd suction hole

506,605. 2nd discharge hole 510. Rotor

511,512. Slot 513,514. Partition rotor

606. First slot 608. First cylinder

610. First rotor 611. First key part

612. Second cylinder 613. Second slot

620. Second rotor 621. Second key part

That is, the compressor of the present invention accommodates the compression element and the electric element in the hermetic container, and the oil retention chamber and the hermetic chamber are partitioned by the partition member in the hermetic container, and two oil pumps are mounted on one end of the rotating shaft. Oil is sucked from one oil tank to one oil pump, lubricated to a compression element mounted on the other end of the rotating shaft, and oil is sucked from the sealed chamber to the other oil pump and lubricated to the oil tank. .

In the case where the compressor is an internal low pressure compressor, the oil supply passage for supplying oil from the sealed chamber to the oil pump is opened under the gas inlet of the compression element.

In the case where the compressor is an internal high pressure compressor, the oil supply passage for supplying oil to the oil pump from the sealed chamber is opened under the gas outlet of the compression element.

In addition, the oil supply capacity of the oil pump for supplying oil from the sealed chamber to the oil retention chamber is equal to or greater than the oil supply capacity for supplying oil from the oil retention chamber to the compression element.

In addition, the oil supply passage for sucking oil from the sealed chamber to the oil pump is configured as a pipe leading out of the sealed chamber from the bottom of the sealed chamber to the oil pump.

Again, the oil pump is composed of two systems as a single body and includes a first slot, a first suction hole, a first discharge hole, a second slot, a second suction hole, and a second discharge hole, and a housing having a first cylinder. A first rotor, which is received in the first slot and is accommodated in the first slot to oscillate in the first cylinder and closes the opening of the second cylinder of the housing, and is received in the second cylinder of the housing and the second key is second The first rotor and the second rotor are oscillated by the rotating shaft, and the cover includes a second rotor which is accommodated in the slot and oscillates in the second cylinder and a cover which closes the opening of the first cylinder of the housing.

In addition, the oil pump is composed of two systems in one unit, and has a housing having an elliptical cylinder, a first suction hole, a first discharge hole, a second suction hole, and a second discharge hole, and is housed in an elliptical cylinder of the housing and outside thereof. It consists of a rotor having two slots facing the circumference 180 degrees and a partition rotor that is accommodated in both slots of the rotor and slides in the cylinder.

(Example)

EMBODIMENT OF THE INVENTION Next, this invention is demonstrated in detail based on drawing.

Figure 1 shows the overall configuration of a horizontal scroll compressor of the embodiment of the present invention.

The airtight container 1 is formed by the cylindrical case 2 and the upper and lower end caps 3 and 4 which are covered by the left and right ends of the case 2.

On the left and right both ends of the cylindrical case 2, the main frame 6 serving as the main shaft receiving member and the shaft supporting portion 7 serving as the subordinate bearing member are fixed in a sealed state by shrinkage fitting or pressing.

The 1st hermetically sealed chamber 1A as an oil retention chamber is formed between this shaft support part 7 and the end cap 4, and a 2nd sealing is provided between the shaft support part 7 and the end cap 3. As shown in FIG. The yarn 1B is formed.

Then, the transmission element 10 is located between the main frame 6 and the shaft support 7 in the second hermetic chamber 1B, and the transmission element 10 is located between the main frame 6 and the end cap 3. Each of the scroll compression elements 20 driven by () is accommodated.

The transmission element 10 is composed of a stator 11 and a rotor 12, the rotation of which is freely fitted to the stator 11, and a rotation shaft 13 forming a central axis of the rotor 12, The left and right end portions 13a and 13b of the rotary shaft 13 are axially supported by the main frame 6 and the shaft support 7 via the bearing member.

In addition, the scroll compression element 20 is composed of a fixed scroll (21) and a swinging scroll (31) facing each other from side to side and on the end plate (22) of the fixed scroll (21). As the involute tooth 23 formed and the involute tooth 33 formed on the hard plate 32 of the swinging screw 31 are engaged with each other, a plurality of compression spaces are directed from the outside to the inside. The compression chamber P which is gradually reduced is formed.

In addition, the oscillating scroll 31 is axially supported by the main frame 6 freely axially by interlocking with the eccentric terminal portion 13a of the rotary shaft 13.

The oscillating scroll 31 is rotated so as not to rotate with respect to the fixed scroll 21 by the Old's coupling 20A so as to move eccentrically from the outside in the second sealed chamber 1B. A discharge port in which the low-pressure refrigerant gas introduced directly from the suction port 8A is compressed into the compression chamber P via an introduction path described later, and the compressed high-pressure refrigerant gas is provided in the center of the fixed scroll 21 ( 24).

Further, the discharge chamber 1C, which is isolated from the second hermetic chamber 1B, is provided on the discharge side surface of the discharge port 24 of the fixed scroll 21 in the above-described scroll compression element 20, and this discharge is performed. The high pressure refrigerant gas discharged from the discharge port 24 via the chamber 1C is discharged from the discharge tube 40.

In addition, the inner bottom space part of the 1st airtight chamber 1A formed of the said case 2 and the end cap 4 is used as the oil retention part 41. As shown in FIG.

And the oil accommodated in this oil retention part 41 is the oil pump provided in the axial support part of the axial support member 7 which supports the eccentric part 13b of the other end of the rotating shaft 13 of the transmission element 10. It is sucked from the suction pipe 43 of one of the two oil pumps 42a and 42b constituting the 42 and supplied to the pole bearing slide portion through the discharge port 43a.

In addition, the oil accumulated in the hermetic chamber 1B is also fixed on the bottom of the case 2 where the hermetic chamber 1B is formed by the other oil pump 42b. The oil pump is sucked from the opening 44C of the communication pipe 44B (lubrication path) located in the lower part of the suction chamber 21a installed in the tank 21 and passed through the passage 44D provided in the shaft support 7. It discharges to the oil retention part 41 from the discharge port 43b of 42b).

In addition, the opening portion 44A is formed in the shaft support member 7 which also serves as a partition between the oil retention portion 41 and the sealed chamber 1B so that a pressure difference does not occur between the oil retention portion 41 and the sealed chamber 1B. Doing.

The low pressure refrigerant gas introduced directly into the second hermetic chamber 1B from the suction port 8A is compressed through the suction port 21a formed in the fixed scroll 21 of the scroll compression element 20. P) is introduced into.

The low pressure refrigerant gas introduced via the introduction path is compressed in the compression chamber P described above, and the compressed high pressure refrigerant gas is discharged from the discharge port 24 provided in the fixed scroll 21. It discharges into 1C, and discharges it again to the exterior of the airtight container 1 from the discharge port 40 installed in this discharge chamber 1C.

That is, the oil contained in the refrigerant is separated and falls to the bottom of the case 2 while the refrigerant gas as described above is sucked into the suction port 21a formed in the fixed scroll 21 from the suction port 8A.

Therefore, the oil is sucked from the opening port 44C of the pipe 44B by the oil pump 42b and sent from the discharge port 43b of the oil pump 42b to the oil reservoir 41.

Then, the oil accumulated in the oil retention section 41 is supplied from the oil supply pipe 43 to each bearing slide section through the oil supply hole 46 through the discharge port 43a of the oil pump 42a by the oil pump 42a. do.

Here, the oil level of the oil which accumulates in the bottom part in the 2nd hermetic chamber 1B falls below the oil oil level which accumulates in the oil retention part 41 of the inner bottom part of the 1st hermetic chamber 1A.

This prevents agitation of the oil by the rotor 12 of the transmission element 10 accommodated in the second hermetic chamber 1B, facilitates lubrication by the oil pump 42, and simultaneously performs transmission It is possible to prevent deterioration of the compression efficiency due to an increase in oil loss or an input loss caused by stirring of oil by the rotor 12 of the element 10.

In this way, in the sealed container 1, the 1st sealed chamber 1A and the 2nd sealed chamber 1B which are oil retention chambers are partitioned by the partition member 7, and the sealed chamber 1A is closed from the sealed chamber 1B. Is refueling oil.

Therefore, in the case of the compressor of the low pressure gas introduction type in the sealed container 1, there is no oil supply shortage even if the compressor is inclined or foaming, and sufficient oil is supplied to each operation part from the first sealed chamber 1A. It is possible to provide a high performance compressor that can be fed and oil discharge can be reduced.

In addition, the communication pipe 44B, which is an oil supply passage for supplying oil from the second hermetic chamber 1B to the oil pump 42, has an opening 44C below the gas inlet 21a of the compression element 20. Since the oil is formed, the oil can be sucked from the low pressure portion where oil tends to collect, and the oil can be effectively utilized without leaving oil in the second sealed chamber 1B.

In addition, the oil supply ability to supply oil to the oil pump 42 from the second sealed chamber 1B is the oil supply capability to supply oil to the oil pump 42 from the first sealed chamber 1A (oil retention chamber). It is equal to or more than.

Therefore, it can utilize effectively, without leaving the oil in the airtight container 1 remaining.

In addition, since the first hermetic chamber (oil retention chamber) is formed as a shaft supporting member 7 which is an existing component, the number of components can be reduced.

In addition, since a part of the passage communicating the second sealed chamber 1B and the oil pump 42 is formed in the shaft supporting member 7, the connection work of the pipe is eliminated and the number of parts is reduced.

2 shows another embodiment.

In this case, the horizontal compressor is a two-circuit oil pump 42 which houses the compression element 20 and the electric element 10 in a sealed container 1 filled with high-pressure gas and is mounted on one end of the rotary shaft 13. It is configured to supply oil to the compression element 20 mounted on the other end 13a of the rotary shaft 13 via the through.

In the sealed container 1, the first sealing chamber 1A and the second sealing chamber 1B as the oil retention chamber are partitioned by the partition member 7 and the main frame 6, and the first sealing chamber 1 is formed. Lubrication is supplied to each operation part by the oil pump 42a from the sealed chamber 1A.

In addition, the communication pipe 44B (oil supply passage) for supplying oil from the second hermetic chamber 1B to the first hermetic chamber 1A (oil retention chamber) by the other oil pump 42b is provided. The openings 44C are arranged in the discharge chamber 1C below the gas outlet 40.

Thus, in the case of the compressor of the high pressure gas introduction type | mold in the airtight container 1, the communication pipe 44B (lubrication) is located in the lower part of the gasoline outlet 40 of the compressor which is a low pressure part, ie, where the oil is the highest in the discharge chamber 1C. Since the opening 44C of the furnace) is disposed, the oil is not discharged together with the discharge gas, so that the oil discharge amount can be reduced, and the oil in the discharge chamber 1C can be effectively utilized.

3 again shows another embodiment.

In this case, the horizontal compressor receives the compression element 20 and the transmission element 10 in the hermetic container 1 and passes through the oil pump 42 mounted on one end 13b of the rotation shaft 13. It is configured to supply oil to the compression element 20 mounted on the other end.

In the sealed container 1, the first sealed chamber 1A (oil retention chamber) and the second sealed chamber 1B are formed by the main frame 6 and the shaft supporting member 7 serving as the partition members. It is divided and supplied to each operation part from the 1st sealed chamber 1A by the oil pump 42a.

The oil supply passage for supplying oil from the second hermetic chamber 1B to the first hermetic chamber 1A by the other oil pump 42b is sealed from the lower part of the second hermetic chamber 1B. It consists of the communication pipe 44B which extends out of the container 1 and reaches the oil pump 42b through 1 A of sealed chambers (oil retention chamber).

In addition, 44C is an opening of the communication pipe 44B.

In this case, since the communication pipe 44B is disposed outside the sealed container 1, there is no problem even if there are various obstacles such as the stator 11 between the sealed chamber 1B and the oil pump 42. The inside of the sealed container 1 can be simplified and piping can be facilitated.

As is apparent from the above description, the present invention can provide a high-performance compressor that can reduce oil discharge without causing oil shortage even when the compressor is inclined or foams in the case of a low pressure gas introduction type compressor in a sealed container. have.

In addition, even in the case of a high-pressure gas introduction type compressor in a sealed container, since the opening of the oil supply passage is disposed under the gas outlet of the compressor, which is a low-pressure part, oil is not discharged together with the discharge gas, and the amount of oil discharge is reduced. You can.

In addition, since the oil passage is located outside the sealed container, even if there are various obstacles such as stators between the sealed chamber and the oil pump, the inside of the sealed container can be simplified and the piping work can be facilitated. .

4 shows the overall configuration of another compressor of the present invention.

Also in this case, the airtight container 301 is formed by the cylindrical case 302, the end cap 303 and the bottom face part 304 which were covered by the left and right ends of this case 302.

On both left and right end sides of the cylindrical case 302, a fixed support shaft 311 and a shaft support member 360 serving as a subordinate bearing member are fixed in a sealed state.

A second hermetic chamber 306 is formed between the fixed scroll 311 and the shaft support member 360.

Then, between the main frame 380 and the shaft support member 360, which are the main shaft support members in the second hermetic chamber 306, the transmission element 350 is disposed between the main frame 380 and the end cap 303. The scroll compression element 310 is driven by the transmission element 350, respectively.

The transmission element 350 is composed of a stator 351, a rotor 343 into which the rotation is freely inserted into the stator 351, and a rotation shaft 340 forming a central axis of the rotor 343. The left and right end portions 341 and 342 of the rotating shaft 340 are rotatably supported by the main frame 380 and the shaft supporting member 360 via the bearing member.

In addition, the scroll compression element 310 is composed of a fixed scroll (311) and a swinging scroll (320) facing each other on the left and right involutes formed on the hard plate 313 of the fixed scroll (311) Compression chamber such that a plurality of compression spaces are gradually reduced from the outside to the inside by engaging the involute teeth 322 formed on the hard plate 321 of the wut tooth 314 and the rocking scroll 320 with each other ( P) is formed.

In addition, the rocking scroll 320 is axially supported on the main frame 380 by being freely axially supported by interlocking with the eccentric terminal portion 341 of the drive shaft 340 of the transmission element 350.

In addition, the suction inlet 308 facing from the outside in the second hermetic chamber 306 by rotating the oscillating scroll 320 so as not to rotate with respect to the fixed scroll 311 by interlocking with the Ouldham coupling 330. ), The refrigerant gas is sucked in the compression chamber P, and compressed to discharge the compressed high-pressure refrigerant gas from the discharge port 312 formed in the center of the fixed scroll 311.

In the discharge side of the discharge port 312 of the fixed scroll 311 in the scroll compression element 310, a chamber (discharge chamber) 307, which is isolated from the second sealed chamber 306, is provided. The high pressure refrigerant gas discharged from the discharge port 132 via the chamber 307 is discharged to the discharge port 309.

Further, the inner bottom space portion of the first hermetic chamber 305 (oil retention chamber) formed by the shaft support member 360 and the bottom surface portion 304 is used as the oil retention portion 390 of oil.

The oil contained in the oil retaining portion 390 is installed on the shaft supporting portion of the shaft supporting member 360 for supporting the eccentric portion 342 of the other end of the rotary shaft 340 of the transmission element 350. Oil is supplied to the scroll compression element and each bearing slide portion sucked from the suction pipe 371 of the oil feed side pump formed in the oil pump 370.

In addition, there is a pipe 372 serving as an oil passage on the bottom side of the case 302 forming the second hermetic chamber 306 and is connected to a suction port of the oil feed side pump formed in the oil pump 370.

The discharge port of the oil feed side pump is connected to the first sealed chamber 305.

As a result, the lubrication of the scroll compression element in the rotary shaft terminal in the second hermetic chamber 306 or the end portion of the case 302 forming the hermetic chamber 306 by lubricating each bearing slide part is sealed. It is structured to send to the oil retention part of the yarn 305.

Here, the oil level of the oil that accumulates in the bottom portion in the second hermetic chamber 306 is lower than the oil level of the oil that accumulates in the oil retention portion 390 of the bottom portion in the first hermetic chamber 305. By preventing the agitation of the oil by the rotor 343 of the transmission element 350 accommodated in the sealed chamber 306 to smooth the lubrication by the oil pump 370 and at the same time the rotation of the transmission element 350 as before It has such a structure that the deterioration of the compression efficiency by the input loss which arises by stirring of the oil by the former 343, or the oil discharge increases is prevented.

Here, the structure of the oil pump 370 having the functions of the oil feed side pump and the oil feed side pump as shown in FIG. 9 includes a first slot 606, a first suction hole 602, and a first discharge hole 603. A housing 607 having a second slot 613, a second suction hole 604, and a second discharge hole 605, and a first key part housed in the first cylinder 608 of the housing 607. A second rotor 610 which is accommodated in the first slot 606 and oscillates in the first cylinder 608 and closes the opening of the second cylinder 612 of the housing 607, A second rotor 620 accommodated in the second cylinder 612 of the housing 607 and the second key portion 621 accommodated in the second slot 613 to oscillate in the second cylinder 612; The cover is configured to close the opening of the first cylinder 608 of the housing 607, and the first rotor 610 and the second rotor 620 are oscillated by the eccentric portion 342 of the rotating shaft. do.

The oil pump 370 configured as described above includes the first and second cylinders 608 and 612 inside the first and second cylinders 608 and 612 as shown in FIGS. 9 to 12 with the rocking motion of the eccentric portion 342 of the rotation shaft 340. The second rotors 610 and 620 swing and the oil is sucked and compressed separately from the first suction hole 602 and the second suction hole 604 and the first and second discharge holes 603 and 605 respectively. Are separately discharged.

By such a configuration, since the oil pump 370 has two cylinders 608, 612, and rotors 610, 620, not only the oil supply of two systems is possible but also the second rotor 620. The first rotor 610 also serves as a function of closing the cylinder 612 with respect to the < Desc / Clms Page number 5 >

As a result, since the housing is one, the number of parts can be reduced.

5 shows another configuration of the oil pump 370.

In this case, the oil pump 370 includes a housing having an elliptical cylinder 502, a first suction hole 503, a first discharge hole 504, a second suction hole 505, and a second discharge hole 506. 501 and a rotor 510 accommodated in an elliptical cylinder 502 of the housing 501 and rotating in the cylinder 502 with two slots 511, 512 facing 180 degrees to its outer circumference. ) And partition rotors 513 and 514 that are accommodated in both slots 511 and 512 of the rotor 510 and slide in the cylinder 502.

By such a configuration, the oil pump 370 can reduce the number of parts because the cylinder 502 and the rotor 510 can supply two systems of oil.

As is apparent from the above description, according to the configuration of FIG. 9, since the oil pump has two cylinders and two rotors, not only is it possible to supply two systems of oil, but also the function of closing the second cylinder for the second rotor is performed by the first pump. The rotor also serves as a partition plate between cylinders.

As a result, since the housing is one, the number of parts can be reduced.

Therefore, it is possible to provide a two-stage oil supply without increasing the parts score, and to provide a scrawl compressor having a low cost and excellent lubrication performance.

In addition, in the configuration of FIG. 5, since the oil pump is capable of supplying two systems of oil with one cylinder and one rotor, the number of parts can be reduced.

As described above, the present invention provides a high-performance compressor that can reduce oil discharge without causing oil shortage even if the compressor is inclined or foaming occurs.

Claims (9)

The compression element 20 and the electric element 10 are accommodated in the sealed container 1, and the oil retention chamber 1A and the sealed chamber 1B are partitioned by the partition member in the sealed container 1, and the rotating shaft The oil pump 42 of two systems is attached to one end of 13, oil is sucked into one oil pump 42 from the said oil retention chamber 1A, and it is attached to the other end of the said rotating shaft 13, The compressor characterized by lubricating the compression element (20) and sucking oil from the closed chamber (1B) to the other oil pump (42) and lubricating the oil retention chamber (1A). The method of claim 1, The compressor is an internal low pressure type, and the oil supply passage for supplying oil from the closed chamber (1B) to the oil pump (42) is opened under the gas inlet of the compression element (20). The method of claim 1, The compressor is an internal high pressure compressor, and the oil supply passage for supplying oil from the closed chamber (1B) to the oil pump (42) is opened under the gas outlet of the compression element (20). The method of claim 1, The oil supply capacity of the oil pump 42 for supplying oil from the closed chamber 1B to the oil retention chamber 1A is equal to or greater than the oil supply capacity for supplying oil from the oil retention chamber 1A to the compression element 20. Compressor, characterized in that. The method of claim 1, The oil supply passage for sucking oil from the sealed chamber 1B to the oil pump 42 is configured as a pipe leading out of the sealed chamber 1B from the lower part of the sealed chamber 1B to the oil pump 42. Compressor. The method of claim 1, The oil pump 370 forms two systems as a single body, and includes a first slot 606, a first suction hole 602, a first discharge hole 603, a second slot 613, a second suction hole 604, A housing 607 having a second discharge hole 605 and a first cylinder 608 of the housing 607 and a first key portion 611 are accommodated in the first slot 606 so that the first cylinder ( 608, the first rotor 610 for oscillating the inside and closing the opening of the second cylinder 612 of the housing 607, and the second key portion accommodated in the second cylinder 612 of the housing 607 621 is accommodated in the second slot 613 to close the second rotor 620 oscillating in the second cylinder 612 and the opening of the first cylinder 608 of the housing 607. Compressor, characterized in that the first rotor (610) and the second rotor (620) is oscillated by the rotating shaft (340). The method of claim 1, The oil pump 370 constitutes two systems in one piece, and has an elliptical cylinder 502, a first suction hole 503, a first discharge hole 504, a second suction hole 505, and a second discharge hole ( A rotor 510 having a housing 501 having a 506 and two slots 511, 512 housed in an elliptical cylinder 502 of the housing 501 and facing 180 degrees to its outer circumference. And a partition rotor (513) and (514) accommodated in both slots (511) and (512) of the rotor (510) and slidably moving in the cylinder (502). In the compressor configured to supply oil to the scroll compression element 20 mounted on the other end of the rotary shaft 340 and the bearing portion via an oil pump 370 mounted at one end of the rotary shaft, the oil pump 370 is Housing 607 having a first slot 606, a first suction hole 602, a first discharge hole 603, a second slot 613, a second suction hole 604, and a second discharge hole 605. And the first key 611 in the first cylinder 608 of the housing 607 and the first key 611 in the first slot 606 to oscillate in the first cylinder 608 and The first rotor 610 for closing the opening of the second cylinder 612 and the second cylinder 612 of the housing 607 and the second key portion 621 is accommodated in the second slot 613. And a cover for closing the opening of the first cylinder 608 of the housing 607, the second rotor 620 oscillating in the second cylinder 612. Electron 610 and second rotor 620 Compressor characterized in that the oscillating motion. In the compressor configured to supply oil to the scroll compression element 20 mounted on the other end of the rotary shaft and the bearing portion via an oil pump 370 mounted at one end of the rotary shaft, the oil pump 370 is an elliptical cylinder 502. ), A housing 501 having a first suction hole 503, a first discharge hole 504, a second suction hole 505, and a second discharge hole 506, and an elliptical cylinder of the housing 501. A rotor 510 housed in 502 and having two slots 511, 512 opposite the outer circumference 180 degrees and in both slots 511, 512 of this rotor 510. Compressor, characterized in that consisting of the partition rotor 513, 514 that is accommodated and slides in the cylinder (502).