CN112177928A - Compressor structure and screw compressor - Google Patents
Compressor structure and screw compressor Download PDFInfo
- Publication number
- CN112177928A CN112177928A CN202011098775.9A CN202011098775A CN112177928A CN 112177928 A CN112177928 A CN 112177928A CN 202011098775 A CN202011098775 A CN 202011098775A CN 112177928 A CN112177928 A CN 112177928A
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- China
- Prior art keywords
- compressor
- motor stator
- compressor body
- motor
- male rotor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004804 winding Methods 0.000 claims abstract description 13
- 230000006698 induction Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 4
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000029058 respiratory gaseous exchange Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/026—Lubricant separation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/06—Silencing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention provides a compressor structure and a screw compressor. The compressor structure comprises a compressor body, an air suction end cover and a motor stator, wherein the motor stator is arranged in the air suction end cover and is provided with a first end and a second end which are opposite to each other, a winding of the motor stator is arranged at the first end to form a lead end, and the second end faces to a first end face of the compressor body. According to the compressor structure and the screw compressor provided by the invention, the lead end is arranged on one side far away from the compressor body, so that the structures such as the motor stator and the like are close to the male rotor of the compressor as much as possible, the length of the cantilever of the motor is reduced, the disturbance degree of the male rotor shaft between the male rotor and the matching section of the motor is reduced, the vibration and the noise of the compressor are improved, the compressor is more compact, and the placement space of the compressor is reduced.
Description
Technical Field
The invention relates to the technical field of compression equipment, in particular to a compressor structure and a screw compressor.
Background
The semi-closed screw compressor has the advantages that the motor is arranged inside the compressor, so that the matching section of the male rotor and the motor does not need to extend out of the compressor, no dynamic seal exists, the sealing effect is good, and the semi-closed screw compressor has a wider application prospect than an open-type compressor. The motor is used as an important component of a semi-closed screw compressor and is mainly limited by a winding of a motor stator, the winding can extend to a certain length on two sides of a stator iron core, the length can be influenced by the process level, the control difficulty of the extension length of the winding of a lead end is larger than that of a winding of a non-lead end, therefore, the winding length of the lead end is larger than that of the winding of the non-lead end, but the wiring board of the traditional compressor is generally placed on a machine body, the lead end of the motor stator is arranged at a position close to the wiring board for wiring with the wiring board, the installation mode causes a longer cantilever of the motor, the shaft disturbance of the compressor in the operation process is larger, and the noise and vibration of the compressor are adversely influenced.
Disclosure of Invention
In order to solve the technical problem that the compressor generates noise and vibration due to the fact that the length of the lead end of the motor is large in the prior art, the compressor structure and the screw compressor are provided, wherein the lead end of the motor is reasonably arranged according to the installation position of the motor to reduce the vibration and the noise.
A compressor structure comprising:
a compressor body;
the air suction end cover is arranged on the first end surface of the compressor body;
the motor stator is arranged in the air suction end cover and provided with a first end and a second end which are opposite, a winding of the motor stator forms a lead end at the first end, and the second end faces the first end face of the compressor body.
The compressor structure still includes the oil content filter screen, be provided with the induction port on the end cover of breathing in, the oil content filter screen set up in the induction port with between the first end.
The compressor structure still includes the oil content filter screen, and part the oil content filter screen passes through first end stretches into inside the motor stator.
The compressor body includes positive rotor shaft and electric motor rotor, positive rotor shaft by the second end stretches into inside the motor stator, electric motor rotor set up in motor stator's inside, just electric motor rotor set up in on the positive rotor shaft.
The compressor is characterized in that a bearing is arranged on the compressor body, a mounting hole is formed in the first end face, the bearing is arranged at the mounting hole, and the male rotor shaft penetrates through the compressor body through the bearing.
The compressor structure further comprises a wiring board, wherein the wiring board is arranged on the outer wall of the air suction end cover, and the lead penetrates through the air suction end cover and then is electrically connected with the wiring board.
A compressor structure comprising:
a compressor body;
the air suction end cover is arranged on the first end surface of the compressor body;
and the motor stator is arranged in the compressor body, a winding of the motor stator forms a lead end at the first end, and the first end faces the first end face.
A screw compressor comprises the compressor structure.
According to the compressor structure and the screw compressor provided by the invention, the lead end is arranged on one side far away from the compressor body, so that the structures such as the motor stator and the like are close to the male rotor of the compressor as much as possible, the length of the cantilever of the motor is reduced, the disturbance degree of the male rotor shaft between the male rotor and the matching section of the motor is reduced, and the vibration and the noise of the compressor are improved.
Drawings
FIG. 1 is a schematic view of a compressor according to the prior art;
FIG. 2 is a schematic structural diagram of a compressor structure and a screw compressor according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating cantilever length calculations for a compressor structure and a screw compressor according to an embodiment of the present invention;
FIG. 4 is a schematic view of another structure of a compressor structure and a screw compressor according to an embodiment of the present invention;
in the figure:
1. a compressor body; 2. a suction end cap; 3. a motor stator; 31. a first end; 32. a second end; 4. an oil content filter screen; 11. a male rotor shaft; 5. a rotor of an electric machine.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The compressor structure shown in fig. 2 to 4 includes: the compressor comprises a compressor body 1, a male rotor and a female rotor which are meshed with each other are arranged in the compressor body 1, and a male rotor shaft of the male rotor protrudes out of the compressor body 1 and is in transmission connection with a motor arranged outside the compressor body; the air suction end cover 2 is arranged on the first end surface of the compressor body 1 and is provided with an air suction port, and the compressor body 1 sucks air through the air suction port; and a motor stator 3 disposed in the suction end cap 2, the motor stator 3 having a first end 31 and a second end 32 opposite to each other, a winding of the motor stator 3 constituting a lead terminal at the first end 31 and a non-lead terminal at the second end 32, the second end 32 (non-lead terminal) being directed toward the first end surface of the compressor body 1 in order to reduce a dimension between the motor stator 3 and the compressor body 1, thereby achieving a reduction in a cantilever length of the motor by a structure in which the dimension of the non-lead terminal is smaller than that of the lead terminal, thereby reducing a disturbance degree of a male rotor motor fitting portion during operation of the compressor, improving vibration and noise of the compressor, and simultaneously disposing the motor inside the suction end cap 2, thereby reducing a risk of motor scratch in the case of reducing a structural dimension of the compressor.
Taking L2 as (1-2) L1;
cantilever length for the conventional motor arrangement shown in fig. 1:
A1＝L1+L2+m-n＝0.5×L1+L2；
cantilever length of the motor arrangement of the invention as shown in fig. 2 to 4:
A2＝L2+L3+m-n＝0.1×L1+L2；
the cantilever length shortening rate is:
η＝A1-A2/A1；
the cantilever length shortening rate eta is 16-27%;
in the aspect of deflection (deflection: displacement of the center of a circle of the cross section of the shaft in the direction vertical to the axial direction), due to the uneven materials of the male rotor shaft and the motor rotor, when the motor rotor and the male rotor shaft move at high speed, a force F vertical to the axial direction of the male rotor can be generated under the action of centrifugal force;
according to the material mechanics formula:
W＝FA3/3EI；
wherein E is the elastic modulus of the material, and I is the moment of inertia of the male rotor shaft;
it can be seen from the formula that when other parameters are not changed, the deflection w is proportional to the third power of the cantilever length a, and when the cantilever length reduction rate η is 16% to 27%, the deflection w is reduced by 36% to 61%, so that the vibration and noise of the compressor can be greatly reduced, and the probability of the motor stator and the rotor being scratched can also be reduced.
Compressor structure still includes oil content filter screen 4, be provided with the induction port on the end cover 2 of breathing in, oil content filter screen 4 set up in the induction port with between the first end 31, also by the one end of compressor structure to the other end of compressor, compressor structure includes induction port, oil content filter screen 4, motor stator 3's first end 31 (lead wire end), motor stator 3's second end 32 (non-lead wire end) and compressor body 1 in proper order.
Compressor structure still includes oil content filter screen 4, and part oil content filter screen 4 passes through first end 31 stretches into inside motor stator 3, under the normal operating's of guaranteeing oil content filter screen 4 circumstances, further reduce compressor structure's size.
The compressor comprises a compressor body 1 and is characterized in that a bearing is arranged on the compressor body 1, a mounting hole is formed in the first end face, the bearing is arranged at the mounting hole, the male rotor shaft 11 penetrates through the compressor body 1 through the bearing, and the male rotor shaft 11 of the compressor protrudes out of the compressor body 1 through the first end face.
The compressor structure still includes the wiring board, the wiring board set up in on the outer wall of end cover 2 breathes in, just the lead wire runs through behind the end cover 2 of breathing in with the wiring board electricity is connected, sets up wiring board and terminal box isotructure with wiring board matched with on end cover 2 breathes in to reduce compressor body 1's complexity, the die sinking and the processing of compressor body 1 of being convenient for.
As another embodiment, a compressor structure as shown in fig. 4 includes: a compressor body 1; the air suction end cover 2 is arranged on the first end surface of the compressor body 1; and a motor stator 3 disposed in the compressor body 1, wherein a winding of the motor stator 3 forms a lead end at the first end 31, and the first end 31 faces the first end face, that is, the first end 31 is disposed at a side far away from the male rotor, so that a length of the male rotor shaft 11 extending out is reduced by using a size of the second end 32 (non-lead end) to be smaller than a size of the first end 31 (lead end), thereby reducing a disturbance degree of the male rotor shaft 11, and further reducing vibration and noise of the compressor structure, and a direction of an arrow in the figure is a fluid flow direction.
A screw compressor comprises the compressor structure.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. A compressor structure, characterized in that: the method comprises the following steps:
a compressor body (1);
the air suction end cover (2) is arranged on the first end surface of the compressor body (1);
the motor stator (3) is arranged in the air suction end cover (2), the motor stator (3) is provided with a first end (31) and a second end (32) which are opposite to each other, a winding of the motor stator (3) forms a lead end at the first end (31), and the second end (32) faces to the first end face of the compressor body (1).
2. The compressor structure of claim 1, wherein: compressor structure still includes oil content filter screen (4), be provided with the induction port on suction end cover (2), oil content filter screen (4) set up in the induction port with between first end (31).
3. The compressor structure of claim 1, wherein: the compressor structure further comprises an oil content filter screen (4), and a part of the oil content filter screen (4) extends into the interior of the motor stator (3) through the first end (31).
4. The compressor structure of claim 1, wherein: compressor body (1) includes male rotor axle (11) and electric motor rotor (5), male rotor axle (11) by second end (32) stretch into inside motor stator (3), electric motor rotor (5) set up in the inside of motor stator (3), just electric motor rotor (5) set up in on male rotor axle (11).
5. The compressor structure of claim 4, wherein: the compressor is characterized in that a bearing is arranged on the compressor body (1), a mounting hole is formed in the first end face, the bearing is arranged at the mounting hole, and the male rotor shaft (11) penetrates through the compressor body (1) through the bearing.
6. The compressor structure of claim 1, wherein: the compressor structure further comprises a wiring board, wherein the wiring board is arranged on the outer wall of the air suction end cover (2), and the lead penetrates through the air suction end cover (2) and then is electrically connected with the wiring board.
7. A compressor structure, characterized in that: the method comprises the following steps:
a compressor body (1);
the air suction end cover (2) is arranged on the first end surface of the compressor body (1);
the motor stator (3) is arranged in the compressor body (1), a winding of the motor stator (3) forms a lead end at the first end (31), and the first end (31) faces the first end face.
8. A screw compressor characterized by: comprising the compressor structure of any one of claims 1 to 6 or the compressor structure of claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011098775.9A CN112177928A (en) | 2020-10-14 | 2020-10-14 | Compressor structure and screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011098775.9A CN112177928A (en) | 2020-10-14 | 2020-10-14 | Compressor structure and screw compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112177928A true CN112177928A (en) | 2021-01-05 |
Family
ID=73950133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011098775.9A Pending CN112177928A (en) | 2020-10-14 | 2020-10-14 | Compressor structure and screw compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112177928A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1512065A (en) * | 1998-09-17 | 2004-07-14 | ������������ʽ���� | Oil-free screw compressor |
| CN1616827A (en) * | 2003-11-14 | 2005-05-18 | 株式会社神户制钢所 | Air compressor |
| JP2013167211A (en) * | 2012-02-16 | 2013-08-29 | Hitachi Appliances Inc | Screw compressor |
| US20150292513A1 (en) * | 2012-11-05 | 2015-10-15 | Johnson Controls Technology Company | Semi-hermetic compressor motor for ammonia service |
| CN105909524A (en) * | 2016-06-01 | 2016-08-31 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor |
| CN213511197U (en) * | 2020-10-14 | 2021-06-22 | 珠海格力电器股份有限公司 | Compressor structure and screw compressor |
-
2020
- 2020-10-14 CN CN202011098775.9A patent/CN112177928A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1512065A (en) * | 1998-09-17 | 2004-07-14 | ������������ʽ���� | Oil-free screw compressor |
| CN1616827A (en) * | 2003-11-14 | 2005-05-18 | 株式会社神户制钢所 | Air compressor |
| JP2013167211A (en) * | 2012-02-16 | 2013-08-29 | Hitachi Appliances Inc | Screw compressor |
| US20150292513A1 (en) * | 2012-11-05 | 2015-10-15 | Johnson Controls Technology Company | Semi-hermetic compressor motor for ammonia service |
| CN105909524A (en) * | 2016-06-01 | 2016-08-31 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor |
| CN213511197U (en) * | 2020-10-14 | 2021-06-22 | 珠海格力电器股份有限公司 | Compressor structure and screw compressor |
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