CN209781282U - Direct-drive device for compressor - Google Patents
Direct-drive device for compressor Download PDFInfo
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- CN209781282U CN209781282U CN201920345871.5U CN201920345871U CN209781282U CN 209781282 U CN209781282 U CN 209781282U CN 201920345871 U CN201920345871 U CN 201920345871U CN 209781282 U CN209781282 U CN 209781282U
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- bearing
- transmission shaft
- impeller
- compressor
- oil
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Abstract
The utility model discloses a compressor is with directly driving device, including transmission shaft and motor casing, compression impeller is installed to the overhanging end of transmission shaft, the transmission shaft is provided with the first bearing and accepts the portion of touching and the second bearing and accepts the portion of touching, the first contact site of bearing and bearing second contact site movable mounting respectively have first bearing and second bearing, first bearing with at least one of second bearing is thrust bearing, the equal fixed mounting of first bearing and second bearing is in on the motor casing, the tip in the transmission shaft with motor casing inner carries out power fit. Through the compression impeller that sets up on the transmission shaft, realize directly driving, reduce wearing and tearing and improve transmission efficiency.
Description
Technical Field
The utility model relates to a compressor field, especially a compressor is with directly driving device.
Background
Most of existing refrigeration air-conditioning compressors adopt two sets of shaft systems, including low-speed shafts and high-speed shafts which are driven through gear sets, but moving parts are more, the transmission systems are complex, and in addition, the loss is large usually when the transmission is carried out through gears, so that the transmission efficiency is reduced.
disclosure of Invention
An object of the utility model is to improve prior art's shortcoming, provide a compressor with directly driving device, realize directly driving, reduce wearing and tearing and improve transmission efficiency.
The technical scheme is as follows:
Compressor is with directly driving device, including transmission shaft and motor casing, the overhanging end of transmission shaft is installed and is compressed impeller, the transmission shaft is provided with first bearing and is received the portion of contacting and the second bearing and is received the portion of contacting, the first contact site of bearing and bearing second contact site movable mounting respectively have first bearing and second bearing, first bearing with at least one of second bearing is thrust bearing, the equal fixed mounting of first bearing and second bearing is in on the motor casing, the tip in the transmission shaft with motor casing inner carries out power fit.
The compression impeller comprises a first impeller and a second impeller, the first impeller is located on the outer side of the extending end of the transmission shaft, the second impeller is located on the inner side of the extending end of the transmission shaft, through channels are formed in the first impeller and the second impeller, and the size of the channel of the first impeller is larger than that of the channel of the second impeller.
The overhanging end of the transmission shaft is provided with a first step table, and the second impeller abuts against the first step table.
The first bearing is a sliding bearing, and the second bearing is a thrust sliding bearing.
The middle part of the transmission shaft is provided with a second step table, and the second bearing is movably matched with the side wall of the second step table.
And a layer of babbitt metal bearing bush is arranged on the matching surfaces of the first bearing, the second bearing and the transmission shaft and the matching surfaces of the second bearing and the side wall of the second step table.
And a plurality of arc-shaped grooves are formed in the matching surfaces of the first bearing, the second bearing and the transmission shaft.
Three sections are uniformly arranged on the circular arc-shaped groove.
Oil supply channels are formed in the first bearing and the second bearing, oil inlets of the oil supply channels are located on the side faces of the first bearing and the second bearing, and oil outlets of the oil supply channels are formed in matching faces of the first bearing, the second bearing and the transmission shaft.
Oil storage grooves are formed in the matching surfaces of the first bearing, the second bearing and the transmission shaft, and oil outlets of the oil supply channels are located at the bottoms of the oil storage grooves.
The first bearing, the second bearing and the transmission shaft matching surface are provided with a plurality of arc grooves, and the oil storage tank is arranged at the bottom of the grooves.
And oil outlets of oil supply channels are formed on the side surfaces of the first bearing and the second bearing and close to the transmission shaft.
an oil overflow groove is formed in the side edge of the oil storage groove and penetrates through the two side edges of the first bearing and the second bearing
It should be noted that:
The foregoing "first, second, and third … …" do not denote any particular quantity or order, but rather are used merely to distinguish one name from another.
The advantages or principles of the invention are explained below:
1. The compressor is with directly driving the device and including transmission shaft and motor casing, realize rotating with the interior tip of transmission shaft through the motor casing is inside, wherein the overhanging end of transmission shaft installs compression impeller, and contact portion and second bearing and install first bearing and second bearing respectively in first bearing, rotate the rotation through first bearing and second bearing, frictional force has been reduced, realize direct drive compression impeller through the compression impeller of the direct fixed mounting of transmission shaft and rotate, in addition, first bearing is thrust bearing with at least one of second bearing, because the process of drive compression, compression impeller can receive a thrust, so offset this power through thrust bearing, consequently realize single-axis drive, the wearing and tearing have been reduced, thereby transmission efficiency has been improved.
2. The compression impeller comprises a first impeller and a second impeller, wherein the first impeller is positioned at the outer side of the transmission shaft, the second impeller is positioned at the inner part, the channel size of the first impeller is larger than that of the second impeller, the first impeller is subjected to primary compression, and then secondary compression of the second impeller is utilized.
3. in addition, the first step table is arranged at the extending end of the transmission shaft, the second impeller abuts against the first step table, abutting limiting of the second impeller is achieved through the arrangement of the first step table, and the displacement phenomenon cannot occur even in the high-speed operation process.
4. The bearing adopts the slide bearing, has avoided the mechanical transmission of antifriction bearing, can effectual less noise, and in addition, the second bearing is thrust slide bearing, when first impeller and second impeller received thrust, can play and offset.
5. The second step platform that the middle part of transmission shaft set up cooperatees with the second bearing, so realize the effect of thrust through the second step platform, provide a stress point.
6. A layer of babbitt metal bearing bush is arranged on all matching surfaces of the first bearing, the second bearing and the transmission shaft, and large-range friction loss is avoided by utilizing the characteristics of low strength and soft texture.
7. The oil supply channel continuously supplies oil to the matching surfaces of the first bearing, the second bearing and the transmission shaft, so that dry friction is avoided, and the first bearing, the second bearing and the transmission shaft are damaged.
8. Oil storage grooves are formed in the matching surfaces of the first bearing, the second bearing and the transmission shaft, and oil outlets of the oil supply channels are located at the bottoms of the oil storage grooves, so that a small amount of oil can be stored in the oil storage grooves to provide lubrication.
9. the first bearing and the second bearing are matched with the transmission shaft in a matched surface mode, a plurality of arc grooves are formed in the matched surface, the oil storage groove is located at the bottom of each arc groove, oil is continuously supplied, the arc grooves are arranged to play a reset role, when the transmission shaft is radially offset, pressure on one side of the offset is overlarge, the top edge of each arc groove plays a thrust force at the moment, lubricating oil is compressed due to pressure, the thrust force is provided, the pressure of the lubricating oil is reduced on the other side, the transmission shaft is pushed back to the original position through resultant force, and balance reset is achieved.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
Fig. 2 is a schematic structural view of a transmission shaft according to an embodiment of the present invention;
Fig. 3 is a schematic structural diagram of a second bearing according to an embodiment of the present invention;
3 fig. 3 4 3 is 3 a 3 sectional 3 view 3 taken 3 along 3 line 3 a 3- 3 a 3 of 3 fig. 3 2 3 according 3 to 3 an 3 embodiment 3 of 3 the 3 present 3 invention 3; 3
Fig. 5 is a schematic structural view of the embodiment of the present invention, in which the groove is matched with the transmission shaft.
Description of reference numerals:
10. A motor housing; 20. a drive shaft; 21. a first bearing contact portion; 22. a second bearing contact portion; 23. a first step table; 24. a second step; 30. a first bearing; 40. a second bearing; 41. a groove; 42. an oil supply passage; 43. an oil storage tank; 44. an oil overflow groove; 45. an oil outlet; 50. a first impeller; 60. a second impeller.
Detailed Description
The following describes embodiments of the present invention in detail.
As shown in fig. 1 to 5, a direct drive device for a compressor includes a transmission shaft 20 and a motor housing 10, wherein a compression impeller is mounted at an overhanging end of the transmission shaft 20, the transmission shaft 20 is provided with a first bearing 30 contact portion 21 and a second bearing 40 contact portion 22, the first bearing contact portion and the second bearing contact portion are respectively movably mounted with a first bearing 30 and a second bearing 40, at least one of the first bearing 30 and the second bearing 40 is a thrust bearing, the first bearing 30 and the second bearing 40 are both fixedly mounted on the motor housing 10, an inner end of the transmission shaft 20 is in power fit with an inner end of the motor housing 10, wherein the compression impeller includes a first impeller 50 and a second impeller 60, the first impeller 50 is located at an outer side portion of the overhanging end of the transmission shaft 20, and the second impeller 60 is located at an inner side portion of the overhanging end of the transmission shaft 20, the first impeller 50 and the second impeller 60 are provided with through channels inside, and the channel size of the first impeller 50 is larger than that of the second impeller 60.
As shown in fig. 1 and 2, the outward extending end of the transmission shaft 20 is provided with a first step 23, and the second impeller 60 abuts against the first step 23. The first bearing 30 is a sliding bearing, and the second bearing 40 is a thrust sliding bearing. The middle part of the transmission shaft 20 is provided with a second step 24, and the second bearing 40 is movably matched with the side wall of the second step 24.
As shown in fig. 3, a layer of babbitt metal bush is disposed on the mating surfaces of the first bearing 30 and the second bearing 40 with the transmission shaft 20, and the mating surfaces of the second bearing 40 with the side wall of the second step table 24.
As shown in fig. 3 to fig. 5, both the first bearing 30 and the second bearing 40 are provided with an oil supply channel 42, an oil inlet of the oil supply channel 42 is located on a side surface of the first bearing 30 and the second bearing 40, and a mating surface of the first bearing 30, the second bearing 40 and the transmission shaft 20 is provided with an oil outlet 45 of the oil supply channel 42. A plurality of arc-shaped grooves 41 are formed in the matching surfaces of the first bearing 30 and the second bearing 40 with the transmission shaft 20, specifically, in this embodiment, three grooves 41 are formed. Oil storage grooves 43 are formed in matching surfaces of the first bearing 30, the second bearing 40 and the transmission shaft 20, an oil outlet 45 of the oil supply channel 42 is located at the bottom of the oil storage groove 43, and the oil storage groove 43 is arranged at the bottom of the groove 41.
An oil outlet 45 of the oil supply channel 42 is formed on the side surfaces of the first bearing 30 and the second bearing 40 and close to the transmission shaft 20. An oil overflow groove 44 is formed at a side edge of the oil storage groove 43, and penetrates through both side edges of the first bearing 30 and the second bearing 40.
Advantages and principles of the present embodiment:
1. The compressor is with directly driving the device and including transmission shaft 20 and motor casing 10, through the inside of motor casing 10 and the rotation of inner end realization of transmission shaft 20, wherein the overhanging end of transmission shaft 20 installs the compression impeller, and install first bearing 30 and second bearing 40 respectively at first bearing 30 contact site 21 and second bearing 40 contact site 22, rotate and rotate through first bearing 30 and second bearing 40, frictional force has been reduced, realize that direct drive compression impeller rotates through the compression impeller of the direct fixed mounting of transmission shaft 20, in addition, at least one of first bearing 30 and second bearing 40 is thrust bearing, because the process of drive compression, the compression impeller can receive a thrust, so offset this power through thrust bearing, consequently realize the unipolar drive, wearing and tearing have been reduced, thereby transmission efficiency has been improved.
2. The compression impeller includes a first impeller 50 and a second impeller 60, and the first impeller 50 is located at an outer side of the driving shaft 20 and the second impeller 60 is located at an inner side, wherein a passage size of the first impeller 50 is larger than a passage size of the second impeller 60, and a primary compression by the first impeller 50 is performed and then a secondary compression by the second impeller 60 is performed.
3. In addition, the first step 23 is arranged at the extending end of the transmission shaft 20, the second impeller 60 abuts against the first step 23, the abutting limit of the second impeller 60 is realized through the arrangement of the first step 23, and the displacement phenomenon can not occur even in the high-speed operation process.
4. the bearings are sliding bearings, mechanical transmission of the rolling bearings is avoided, noise can be effectively reduced, and in addition, the second bearing 40 is a thrust sliding bearing and can be offset when the first impeller 50 and the second impeller 60 are subjected to thrust.
5. the second step 24 provided in the middle of the driving shaft 20 is engaged with the second bearing 40, so that a thrust is applied through the second step 24 to provide a force receiving point.
6. On all the mating surfaces of the first bearing 30 and the second bearing 40 and the transmission shaft 20, a layer of babbitt metal bush is arranged, and the characteristics of low strength and soft texture are utilized to avoid large-scale friction loss.
7. the oil supply passage 42 continuously supplies oil to the matching surfaces of the first bearing 30 and the second bearing 40 and the transmission shaft 20, so that dry friction is avoided, and the first bearing 30 and the second bearing 40 and the transmission shaft 20 are prevented from being damaged.
8. An oil storage groove 43 is formed on the matching surfaces of the first bearing 30, the second bearing 40 and the transmission shaft 20, and an oil outlet 45 of the oil supply channel 42 is positioned at the bottom of the oil storage groove 43, so that a small amount of storage can be performed through the oil storage groove 43, and lubrication can be provided.
9. The matching surfaces of the first bearing 30, the second bearing 40 and the transmission shaft 20 are provided with a plurality of arc-shaped grooves 41, the oil storage groove 43 is positioned at the bottom of the arc-shaped grooves 41, so that oil is continuously supplied, the arc-shaped grooves 41 are arranged to play a role in resetting, when the transmission shaft 20 has radial deviation, the pressure on one side of the deviation is overlarge, the top edge of the arc-shaped grooves 41 plays a role in pushing force at the moment, lubricating oil is compressed due to the pressure, so that the pushing force is provided, and on the other side, the pressure of the lubricating oil is reduced, so that the transmission shaft 20 is pushed back to the original position.
The above are only specific embodiments of the present invention, and the protection scope of the present invention is not limited thereby; any replacement and improvement made on the basis of not violating the conception of the utility model belong to the protection scope of the utility model.
Claims (10)
1. The compressor is with directly driving device, its characterized in that, including transmission shaft and motor casing, the overhanging end of transmission shaft is installed and is compressed impeller, the transmission shaft is provided with first bearing and is received contact portion and second bearing and receive contact portion, the first contact portion of bearing and bearing second contact portion movable mounting have first bearing and second bearing respectively, first bearing with at least one of second bearing is thrust bearing, first bearing and second bearing equal fixed mounting are in on the motor casing, the tip in the transmission shaft with motor casing inner carries out power fit.
2. The direct drive device for the compressor as claimed in claim 1, wherein the compression impeller comprises a first impeller and a second impeller, the first impeller is located at the outer side part of the overhanging end of the transmission shaft, the second impeller is located at the inner side part of the overhanging end of the transmission shaft, a through channel is arranged inside each of the first impeller and the second impeller, and the channel size of the first impeller is larger than that of the second impeller.
3. A direct drive device for a compressor as set forth in claim 2, wherein said drive shaft is provided at an outwardly extending end thereof with a first step, and said second impeller abuts against said first step.
4. a direct drive for a compressor as set forth in any one of claims 1 through 3 wherein said first bearing is a plain bearing and said second bearing is a thrust plain bearing.
5. A direct drive device for a compressor as claimed in claim 4, wherein a second step is arranged in the middle of the transmission shaft, and the second bearing is movably matched with the side wall of the second step.
6. A direct drive device for a compressor as set forth in claim 5 wherein a layer of babbitt metal bearing is provided on mating surfaces of said first bearing and said second bearing with a drive shaft and mating surfaces of said second bearing with said second step side wall.
7. A direct drive device for a compressor as claimed in claim 4 wherein a plurality of circular arc grooves are provided on mating surfaces of said first bearing and said second bearing with said drive shaft.
8. The direct drive device for the compressor as claimed in claim 4, wherein the first bearing and the second bearing are both provided with oil supply channels, oil inlets of the oil supply channels are located on the side surfaces of the first bearing and the second bearing, and oil outlets of the oil supply channels are both provided on the matching surfaces of the first bearing and the transmission shaft and the matching surfaces of the second bearing and the transmission shaft.
9. The direct drive device for the compressor as claimed in claim 8, wherein oil storage grooves are formed in matching surfaces of the first bearing and the second bearing with the transmission shaft, and oil outlets of the oil supply passages are located at bottoms of the oil storage grooves.
10. A direct drive device for a compressor as claimed in claim 9 wherein a plurality of circular arc grooves are provided on mating surfaces of said first bearing and said second bearing with said drive shaft, and said oil reservoir is provided at the bottom of said grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920345871.5U CN209781282U (en) | 2019-03-18 | 2019-03-18 | Direct-drive device for compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920345871.5U CN209781282U (en) | 2019-03-18 | 2019-03-18 | Direct-drive device for compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209781282U true CN209781282U (en) | 2019-12-13 |
Family
ID=68798439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920345871.5U Active CN209781282U (en) | 2019-03-18 | 2019-03-18 | Direct-drive device for compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209781282U (en) |
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2019
- 2019-03-18 CN CN201920345871.5U patent/CN209781282U/en active Active
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