CN214465075U - Compressor structure and compressor that lubricated effect is good - Google Patents
Compressor structure and compressor that lubricated effect is good Download PDFInfo
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- CN214465075U CN214465075U CN202120037378.4U CN202120037378U CN214465075U CN 214465075 U CN214465075 U CN 214465075U CN 202120037378 U CN202120037378 U CN 202120037378U CN 214465075 U CN214465075 U CN 214465075U
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- 230000000694 effects Effects 0.000 title abstract description 17
- 230000006835 compression Effects 0.000 claims abstract description 36
- 238000007906 compression Methods 0.000 claims abstract description 36
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 238000005461 lubrication Methods 0.000 claims abstract description 22
- 230000001050 lubricating effect Effects 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 18
- 238000004891 communication Methods 0.000 claims description 15
- 230000006698 induction Effects 0.000 claims description 8
- 238000005096 rolling process Methods 0.000 claims description 6
- 239000003507 refrigerant Substances 0.000 abstract description 36
- 238000009835 boiling Methods 0.000 abstract description 6
- 238000009834 vaporization Methods 0.000 abstract description 6
- 230000008016 vaporization Effects 0.000 abstract description 6
- 239000000314 lubricant Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model provides a lubricated effectual compressor structure and compressor. The compressor structure includes seal structure, the motor chamber with be formed with first bearing chamber between the compression chamber, first bearing chamber and outside lubrication circulation mechanism intercommunication, just first bearing chamber with be formed with first intercommunication clearance between the motor chamber, seal structure set up in the first intercommunication clearance. The utility model provides a lubricated effectual compressor structure and compressor utilizes the pressure in seal structure and compression chamber to seal the bearing chamber to make the pressure increase of bearing intracavity, and then make the bearing intracavity be used for lubricated refrigerant's boiling point increase, effectually avoid the refrigerant vaporization and destroy lubricated liquid film, guarantee the liquid lubrication of bearing, utilize the refrigerant that seal structure can avoid the bearing intracavity to reveal to the motor intracavity simultaneously, further guarantee the pressure of bearing intracavity, thereby guarantee the lubricated effect of bearing.
Description
Technical Field
The utility model relates to a compression equipment technical field, especially a lubricated effectual compressor structure and compressor.
Background
Centrifugal compressor rotor systems are typically comprised of a rotating shaft, an impeller and its fasteners, bearings. The rotor links to each other with the motor, thereby drives the high-speed gyration of impeller and produces centrifugal force and do work to the refrigerant, realizes the compression function to the refrigerant, and wherein the pivot needs reliable bearing to support, and current compression mechanism uses the refrigerant to lubricate the bearing, has simplified the structure complexity of compressor greatly, but the boiling point of refrigerant is lower, and lubricated in-process vaporizes easily, leads to the poor problem of bearing lubrication effect.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem of poor lubricating effect caused by low boiling point of refrigerant in the existing compressor, the compressor structure and the compressor which have good lubricating effect by increasing the pressure in the bearing cavity by using the sealing mechanism so as to improve the boiling point of the refrigerant and avoid the vaporization of the refrigerant are provided.
The utility model provides a compressor structure, includes the casing, be formed with compression chamber and motor chamber in the casing, compressor structure still includes seal structure, the motor chamber with be formed with first bearing chamber between the compression chamber, first bearing chamber and outside lubrication circulation mechanism intercommunication, just first bearing chamber with be formed with first intercommunication clearance between the motor chamber, seal structure set up in the first intercommunication clearance.
A labyrinth sealing mechanism is arranged in the first communication gap and forms the sealing structure.
The bearing is arranged in the first bearing cavity, a liquid seal cavity is formed in one end, far away from the bearing, of the labyrinth seal mechanism, the external lubricating circulation mechanism is communicated with the liquid seal cavity, and the liquid seal cavity and the labyrinth seal mechanism jointly form the seal structure.
The labyrinth seal mechanism comprises a first labyrinth seal mechanism and a second labyrinth seal mechanism which are arranged in parallel, a spiral seal mechanism is arranged between the first labyrinth seal mechanism and the second labyrinth seal mechanism, and the first labyrinth seal mechanism, the second labyrinth seal mechanism and the spiral seal mechanism jointly form the seal structure.
A second communicating gap is formed between the first bearing cavity and the compression cavity, and the sealing structure is arranged in the second communicating gap.
The compressor structure comprises two rolling bearings, and the two rolling bearings are arranged in the first bearing cavity.
Be provided with gas vent and induction port on the casing, the gas vent communicates with the condenser, induction port and evaporimeter intercommunication, the lubricated export of condenser with the lubricated entry of evaporimeter all with first bearing chamber intercommunication, just the condenser with the evaporimeter constitutes outside lubrication circulation mechanism.
A first balance pipeline is arranged between the evaporator and the first bearing cavity, and a first pressure adjusting mechanism is arranged on the first balance pipeline.
One side of the motor cavity, which is far away from the compression cavity, is formed with a second bearing cavity, the second bearing cavity is communicated with the external lubrication circulation mechanism, a third communication gap is formed between the second bearing cavity and the motor cavity, and the sealing structure is arranged in the third communication gap.
And a fourth communication gap is formed between the second bearing cavity and the inside of the shell, and the fourth communication gap is provided with the sealing structure.
Be provided with gas vent and induction port on the casing, the gas vent communicates with the condenser, induction port and evaporimeter intercommunication, just the lubricated export of condenser with the lubricated entry of evaporimeter all with second bearing chamber intercommunication, just the condenser with the evaporimeter constitutes outside lubrication circulation mechanism.
And a second balance pipeline is arranged between the evaporator and the second bearing cavity, and a second pressure adjusting mechanism is arranged on the second balance pipeline.
A third balance pipeline is arranged between the first bearing cavity and the motor cavity, and a third pressure adjusting mechanism is arranged on the third balance pipeline; or a fourth balance pipeline is arranged between the second bearing cavity and the motor cavity, and a fourth pressure adjusting mechanism is arranged on the fourth balance pipeline; or a third balance pipeline is arranged between the first bearing cavity and the motor cavity, a third pressure adjusting mechanism is arranged on the third balance pipeline, a fourth balance pipeline is arranged between the second bearing cavity and the motor cavity, and a fourth pressure adjusting mechanism is arranged on the fourth balance pipeline.
The compressor structure still includes pivot and impeller, the pivot runs through in proper order the motor chamber first bearing chamber with the compression chamber, the impeller set up in the pivot, just the impeller is located in the compression chamber.
The impeller quantity is a plurality of, and all the impeller sets up side by side along the length direction of pivot.
A compressor comprises the compressor structure.
The utility model provides a lubricated effectual compressor structure and compressor utilizes the pressure in seal structure and compression chamber to seal the bearing chamber to make the pressure increase of bearing intracavity, and then make the bearing intracavity be used for lubricated refrigerant's boiling point increase, effectually avoid the refrigerant vaporization and destroy lubricated liquid film, guarantee the liquid lubrication of bearing, utilize the refrigerant that seal structure can avoid the bearing intracavity to reveal to the motor intracavity simultaneously, further guarantee the pressure of bearing intracavity, thereby guarantee the lubricated effect of bearing.
Drawings
Fig. 1 is a schematic structural diagram of a compressor structure with a good lubrication effect and a compressor structure of an embodiment of the compressor, which is not shown in a sealing structure;
fig. 2 is a schematic structural view of a compressor structure with a good lubricating effect and a sealing structure of an embodiment of the compressor provided by the present invention;
fig. 3 is a schematic structural view of a compressor structure with a good lubrication effect and a first bearing cavity and a sealing structure of an embodiment of the compressor provided by the present invention;
fig. 4 is a schematic structural view of a compressor structure with a good lubrication effect and a second bearing cavity and a sealing structure of an embodiment of the compressor provided by the present invention;
fig. 5 is a schematic structural diagram of a compressor structure with a good lubrication effect and a first balance pipeline of an embodiment of the compressor provided by the present invention;
in the figure:
1. a compression chamber; 2. a motor cavity; 3. a rotating shaft; 4. a first communication gap; 5. a labyrinth seal mechanism; 6. a first bearing cavity; 7. a liquid seal cavity; 8. a spiral sealing mechanism; 9. a second communication gap; 10. a first balance line; 11. a condenser; 12. an evaporator; 13. a second bearing cavity; 14. a third communication gap; 15. a fourth communication gap; 16. an impeller.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
As shown in fig. 1 to 5, the compressor structure includes a casing, a compression cavity 1 and a motor cavity 2 are formed in the casing, in order to ensure that a rotating shaft 3 in the compressor structure can rotate normally, a certain gap needs to be provided between the casing and the rotating shaft 3, such as a first communication gap 4 between a bearing cavity and the motor cavity 2, and because the compression cavity 1 is a high-pressure cavity and the motor cavity 2 is a low-pressure cavity, a lubricant (refrigerant) entering the bearing cavity by an external lubrication circulation mechanism has a pressure difference with a low pressure in the motor cavity 2, the lubricant leaks into the motor cavity 2 due to the effect of the pressure, so that the pressure in the bearing cavity is reduced, and because the lubricant is a refrigerant, when the pressure is reduced, the boiling point of the refrigerant is reduced accordingly, so that when the bearing is lubricated by a liquid refrigerant, the lubricating liquid film is damaged due to the problem of vaporization, and the problem of poor lubricating effect of the bearing is caused, therefore, this application the compressor structure still includes seal structure, motor chamber 2 with be formed with first bearing chamber 6 between the compression chamber 1, first bearing chamber 6 and outside lubrication circulation mechanism intercommunication, just first bearing chamber 6 with be formed with first intercommunication clearance 4 between the motor chamber 2, seal structure set up in first intercommunication clearance 4, utilize seal structure to seal first intercommunication clearance 4, avoid the refrigerant in first bearing chamber 6 to reveal in motor chamber 2, simultaneously because the strong interior high-pressure environment that is of compression, the refrigerant in first bearing chamber 6 can not perhaps can not reveal to compression chamber 1 basically to guarantee the reliability of 6 internal pressures in first bearing chamber, and then guarantee the lubricated effect of liquid refrigerant to the bearing.
The labyrinth seal structure is characterized in that a plurality of annular seal teeth which are sequentially arranged are arranged on the shell around the rotating shaft 3, a series of cut-off gaps and expansion cavities are formed between the teeth, and a refrigerant generates a throttling effect when passing through the gaps of the zigzag labyrinth to achieve the purpose of leakage resistance.
The bearing is arranged in the first bearing cavity 6, a liquid seal cavity 7 is arranged at one end, far away from the bearing, of the labyrinth seal mechanism 5, the external lubrication circulation mechanism is communicated with the liquid seal cavity 7, the liquid seal cavity 7 and the labyrinth seal mechanism 5 jointly form the seal structure, and the external lubrication circulation mechanism sends a liquid refrigerant into the liquid seal cavity 7, so that a certain air effect is formed in the liquid seal cavity 7, and the seal effect of the seal structure is further improved by utilizing the liquid seal effect.
The compressor structure comprises two rolling bearings, and the two rolling bearings are arranged in the first bearing cavity 6.
The shell is provided with an exhaust port and an air suction port, the exhaust port is communicated with the condenser 11, the air suction port is communicated with the evaporator 12, a lubricating outlet of the condenser 11 and a lubricating inlet of the evaporator 12 are communicated with the first bearing cavity 6, the condenser 11 and the evaporator 12 form the external lubricating circulation mechanism, a refrigerant discharged from the exhaust port of the compression cavity 1 enters the condenser 11 to form a high-pressure liquid refrigerant, the high-pressure liquid refrigerant enters the first bearing cavity 6 from the lubricating outlet of the condenser 11 to lubricate a bearing in the first bearing cavity 6, and the refrigerant lubricating circulation is completed after the lubrication is finished and enters the evaporator 12 from the lubricating inlet of the evaporator 12.
A first balance pipeline 10 is arranged between the evaporator 12 and the first bearing cavity 6, a first pressure adjusting mechanism is arranged on the first balance pipeline 10, the first balance pipeline 10 is used for adjusting the pressure in the first bearing cavity 6, and the problem of overhigh pressure caused by vaporization of a refrigerant in the first bearing cavity 6 is avoided.
When the bearings of the compressor structure are respectively arranged on two sides of the motor cavity 2, a second bearing cavity 13 is formed in one side, far away from the compression cavity 1, of the motor cavity 2, the second bearing cavity 13 is communicated with the external lubricating circulation mechanism, a third communicating gap 14 is formed between the second bearing cavity 13 and the motor cavity 2, the sealing structure is arranged in the third communicating gap 14, the third communicating gap 14 is sealed through the sealing structure, and the refrigerant is prevented from being leaked into the motor cavity 2.
When the rotating shaft 3 penetrates through the second bearing cavity 13, a gap exists between the part of the second bearing cavity 13 close to the motor cavity 2 and the part far away from the motor cavity 2, namely a fourth communicating gap 15 is formed between the second bearing cavity 13 and the inside of the shell, and the fourth communicating gap 15 is provided with the sealing structure, so that the sealing reliability of the second bearing cavity 13 is ensured.
The shell is provided with an exhaust port and an air suction port, the exhaust port is communicated with the condenser 11, the air suction port is communicated with the evaporator 12, a lubricating outlet of the condenser 11 and a lubricating inlet of the evaporator 12 are communicated with the second bearing cavity 13, the condenser 11 and the evaporator 12 form the external lubricating circulation mechanism, a refrigerant discharged from the exhaust port of the compression cavity 1 enters the condenser 11 to form a high-pressure liquid refrigerant, the high-pressure liquid refrigerant enters the second bearing cavity 13 from the lubricating outlet of the condenser 11 to lubricate a bearing in the second bearing cavity 13, and the refrigerant lubricating circulation is completed after the lubrication is finished and enters the evaporator 12 from the lubricating inlet of the evaporator 12.
A second balance pipeline is arranged between the evaporator 12 and the second bearing cavity 13, a second pressure adjusting mechanism is arranged on the second balance pipeline, the second balance pipeline is used for adjusting the pressure in the second bearing cavity 13, and the problem of overhigh pressure caused by vaporization of a refrigerant in the second bearing cavity 13 is avoided.
A third balance pipeline is arranged between the first bearing cavity 6 and the motor cavity 2, and a third pressure adjusting mechanism is arranged on the third balance pipeline; or a fourth balance pipeline is arranged between the second bearing cavity 13 and the motor cavity 2, and a fourth pressure adjusting mechanism is arranged on the fourth balance pipeline; or first bearing chamber 6 with be provided with the third balanced pipeline between the motor chamber 2, be provided with third pressure adjustment mechanism on the third balanced pipeline, second bearing chamber 13 with be provided with the fourth balanced pipeline between the motor chamber 2, be provided with fourth pressure adjustment mechanism on the fourth balanced pipeline, as required, can lead the pressure in first bearing chamber 6 and/or the second bearing chamber 13 to in the motor chamber 2 to avoid first bearing chamber 6 or the too high problem of second bearing chamber 13 pressure.
The compressor structure still includes pivot 3 and impeller 16, pivot 3 runs through in proper order motor chamber 2 first bearing chamber 6 with compression chamber 1, impeller 16 set up in on the pivot 3, just impeller 16 is located in compression chamber 1, the rotation of pivot 3 drives impeller 16 and rotates to compress and reach the purpose of compression to the refrigerant that gets into in compression chamber 1.
The number of the impellers 16 is plural, and all the impellers 16 are arranged in parallel along the length direction of the rotating shaft 3, that is, the compressor structure forms a multi-stage compression structure.
A compressor comprises the compressor structure.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (16)
1. The utility model provides a compressor structure, includes the casing, be formed with compression chamber (1) and motor chamber (2) in the casing, its characterized in that: the compressor structure still includes seal structure, motor chamber (2) with be formed with first bearing chamber (6) between compression chamber (1), first bearing chamber (6) and outside lubrication circulation mechanism intercommunication, just first bearing chamber (6) with be formed with first intercommunication clearance (4) between motor chamber (2), seal structure set up in first intercommunication clearance (4).
2. The compressor structure of claim 1, wherein: a labyrinth seal mechanism (5) is arranged in the first communication gap (4), and the labyrinth seal mechanism (5) forms the seal structure.
3. The compressor structure of claim 2, wherein: be provided with the bearing in first bearing chamber (6), just labyrinth seal mechanism (5) are kept away from the one end department of bearing is provided with liquid seal chamber (7), outside lubrication circulation mechanism with liquid seal chamber (7) intercommunication, liquid seal chamber (7) with labyrinth seal mechanism (5) constitute jointly seal structure.
4. The compressor structure of claim 2, wherein: labyrinth seal mechanism (5) are including the first labyrinth seal mechanism and the second labyrinth seal mechanism that set up side by side, just first labyrinth seal mechanism with be provided with spiral seal mechanism (8) between the second labyrinth seal mechanism, first labyrinth seal mechanism second labyrinth seal mechanism and spiral seal mechanism (8) constitute jointly seal structure.
5. The compressor structure of claim 1, wherein: a second communication gap (9) is formed between the first bearing cavity (6) and the compression cavity (1), and the sealing structure is arranged in the second communication gap (9).
6. The compressor structure of claim 1, wherein: the compressor structure comprises two rolling bearings, and the two rolling bearings are arranged in the first bearing cavity (6).
7. The compressor structure of claim 1, wherein: be provided with gas vent and induction port on the casing, gas vent and condenser (11) intercommunication, induction port and evaporimeter (12) intercommunication, the lubricated export of condenser (11) with the lubricated entry of evaporimeter (12) all with first bearing chamber (6) intercommunication, just condenser (11) with evaporimeter (12) constitute outside lubrication circulation mechanism.
8. The compressor structure of claim 7, wherein: a first balance pipeline (10) is arranged between the evaporator (12) and the first bearing cavity (6), and a first pressure adjusting mechanism is arranged on the first balance pipeline (10).
9. The compressor structure of claim 1, wherein: one side of the motor cavity (2) far away from the compression cavity (1) is provided with a second bearing cavity (13), the second bearing cavity (13) is communicated with the external lubricating circulation mechanism, a third communicating gap (14) is formed between the second bearing cavity (13) and the motor cavity (2), and the sealing structure is arranged in the third communicating gap (14).
10. The compressor structure of claim 9, wherein: and a fourth communication gap (15) is formed between the second bearing cavity (13) and the inside of the shell, and the sealing structure is arranged on the fourth communication gap (15).
11. The compressor structure of claim 9, wherein: be provided with gas vent and induction port on the casing, gas vent and condenser (11) intercommunication, induction port and evaporimeter (12) intercommunication, just the lubricated export of condenser (11) with the lubricated entry of evaporimeter (12) all with second bearing chamber (13) intercommunication, just condenser (11) with evaporimeter (12) constitute outside lubrication circulation mechanism.
12. The compressor structure of claim 11, wherein: and a second balance pipeline is arranged between the evaporator (12) and the second bearing cavity (13), and a second pressure adjusting mechanism is arranged on the second balance pipeline.
13. The compressor structure of claim 9, wherein: a third balance pipeline is arranged between the first bearing cavity (6) and the motor cavity (2), and a third pressure adjusting mechanism is arranged on the third balance pipeline; or a fourth balance pipeline is arranged between the second bearing cavity (13) and the motor cavity (2), and a fourth pressure adjusting mechanism is arranged on the fourth balance pipeline; or first bearing chamber (6) with be provided with the third balanced pipeline between motor chamber (2), be provided with third pressure adjustment mechanism on the third balanced pipeline, second bearing chamber (13) with be provided with the fourth balanced pipeline between motor chamber (2), be provided with the fourth pressure adjustment mechanism on the fourth balanced pipeline.
14. The compressor structure of claim 1, wherein: the compressor structure still includes pivot (3) and impeller (16), pivot (3) run through in proper order motor chamber (2) first bearing chamber (6) with compression chamber (1), impeller (16) set up in on pivot (3), just impeller (16) are located in compression chamber (1).
15. The compressor structure of claim 14, wherein: the number of the impellers (16) is multiple, and all the impellers (16) are arranged in parallel along the length direction of the rotating shaft (3).
16. A compressor, characterized by: comprising the compressor structure of any one of claims 1 to 15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120037378.4U CN214465075U (en) | 2021-01-06 | 2021-01-06 | Compressor structure and compressor that lubricated effect is good |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120037378.4U CN214465075U (en) | 2021-01-06 | 2021-01-06 | Compressor structure and compressor that lubricated effect is good |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214465075U true CN214465075U (en) | 2021-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120037378.4U Active CN214465075U (en) | 2021-01-06 | 2021-01-06 | Compressor structure and compressor that lubricated effect is good |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214465075U (en) |
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2021
- 2021-01-06 CN CN202120037378.4U patent/CN214465075U/en active Active
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