CN107359746B - Oil-cooled motor for compressor - Google Patents
Oil-cooled motor for compressor Download PDFInfo
- Publication number
- CN107359746B CN107359746B CN201710703177.1A CN201710703177A CN107359746B CN 107359746 B CN107359746 B CN 107359746B CN 201710703177 A CN201710703177 A CN 201710703177A CN 107359746 B CN107359746 B CN 107359746B
- Authority
- CN
- China
- Prior art keywords
- motor
- oil
- compressor
- transition flange
- end cover
- 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.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- H02K9/193—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling medium; with means for preventing leakage of the cooling medium
Abstract
The invention discloses an oil-cooled motor for a compressor, which comprises a stator, a rotor, a shell, an end cover, a transition flange and a motor shaft for driving a head shaft of the compressor to rotate, wherein a motor cavity is formed between the shell and the end cover as well as between the shell and the transition flange, the head shaft penetrates through the transition flange to be fixedly connected with one end of the motor shaft, and the other end of the motor shaft is connected with the end cover through a bearing; the end cover, the end part of the motor shaft and the bearing form an oil passing cavity; the end cover is provided with a first oil inlet which is communicated with the oil passing cavity; the transition flange is provided with a first oil outlet which is communicated with the motor cavity. The oil cooling motor for the compressor greatly improves the cooling efficiency and the working performance of the motor.
Description
Technical Field
The invention relates to a motor, in particular to an oil-cooled motor for a compressor.
Background
At present, a screw air compressor is usually driven by a motor, and a large amount of heat is generated when the motor works, so that the heat generated in the working process of the motor must be timely discharged in order to avoid influencing the normal working of the motor and avoiding burning the motor at too high temperature, and the normal working of the motor can be ensured.
The motor cooling is generally divided into air cooling, water cooling, oil cooling and the like, wherein the oil cooling mode is widely applied due to the advantages of high specific heat capacity of oil, protection of the motor from corrosion, cyclic cooling and the like.
In the prior art, most of the oil-cooled motors are external cooling modes, namely cooling oil circulates through a shell of the motor to take away heat generated in the working process of the motor, and the cooling oil does not directly enter the motor. The cooling mode can well reduce the temperature outside the motor stator, but because cooling oil does not enter the motor, heat generated inside the motor rotor and the stator cannot be taken away in time, thereby influencing the cooling efficiency of the motor and reducing the overall performance of the motor.
Disclosure of Invention
In order to solve the problems, the invention provides an oil-cooled motor for a compressor, which improves the cooling efficiency and the overall working performance of the motor.
In order to achieve the above object, one technical scheme of the oil-cooled motor for a compressor of the present invention is as follows: the motor comprises a stator, a rotor, a shell, an end cover, a transition flange and a motor shaft for driving a head shaft of a compressor to rotate, wherein the stator is fixedly arranged on the inner surface of the shell, the rotor is fixed on the motor shaft, the shell is horizontally arranged, the end cover and the transition flange are respectively fixed at the left end and the right end of the shell, a motor cavity is formed between the shell and the end cover and the transition flange, the head shaft penetrates through the transition flange to be fixedly connected with one end of the motor shaft, and the other end of the motor shaft is connected with the end cover through a bearing; the end cover, the end part of the motor shaft and the bearing form an oil passing cavity; the end cover is provided with a first oil inlet which is communicated with the oil passing cavity; the transition flange is provided with a first oil outlet which is communicated with the motor cavity.
Preferably, a second oil inlet is formed in the transition flange, a second oil outlet is formed in the end cover, and the second oil inlet and the second oil outlet are communicated with the motor cavity.
Preferably, the transition flange is provided with an exhaust port, and the exhaust port is communicated with the motor cavity.
Preferably, the exhaust port is provided with an exhaust valve, and the exhaust valve is connected with the exhaust port through an exhaust valve connector.
Preferably, the first oil inlet is provided with a solenoid valve, and the solenoid valve is connected with the first oil inlet through a nozzle tip.
Preferably, a sealing ring is arranged between the nose shaft and the transition flange.
In order to achieve the above object, another technical scheme of the oil-cooled motor for a compressor of the present invention is as follows: the motor comprises a stator, a rotor, a shell, an end cover, a transition flange and a motor shaft for driving a handpiece shaft of a compressor to rotate, wherein the stator is fixedly arranged on the inner surface of the shell, the rotor is fixed on the motor shaft, the shell is vertically arranged, the end cover and the transition flange are respectively fixed at the upper end and the lower end of the shell, a motor cavity is formed between the shell and the end cover and the transition flange, and the handpiece shaft penetrates through the transition flange and is fixedly connected with one end of the motor shaft; an oil inlet is formed in the end cover and is communicated with the motor cavity; an oil outlet is arranged on the transition flange and is communicated with the motor cavity.
Preferably, an exhaust port is formed in the end cover, and the exhaust port is communicated with the motor cavity.
Preferably, the exhaust port is provided with an exhaust valve, and the exhaust valve is connected with the exhaust port through an exhaust valve connector.
Preferably, the oil inlet is provided with a solenoid valve, and the solenoid valve is connected with the oil inlet through a nozzle tip.
Preferably, a sealing ring is arranged between the nose shaft and the transition flange.
According to the oil-cooled motor for the compressor, cooling oil can directly enter the motor and directly contact with the rotor and the stator of the motor, so that heat generated in the motor can be timely taken away, and the cooling efficiency and the working performance of the motor are greatly improved.
Drawings
The present disclosure will become more apparent with reference to the accompanying drawings. It should be understood that these drawings are illustrative only and are not drawn to scale and are not intended to limit the scope of the invention. In the figure:
FIG. 1 is a schematic view of a first embodiment of an oil-cooled motor for a compressor of the present invention;
fig. 2 is a schematic view of a second embodiment of an oil-cooled motor for a compressor of the present invention.
Detailed Description
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Embodiment one:
as shown in fig. 1, the oil-cooled motor for a compressor of the present embodiment includes a stator 8, a rotor 7, a housing 9, an end cover 3, a transition flange 14, and a motor shaft 5 for driving a head shaft 15 of the compressor to rotate, wherein the stator 8 is fixedly mounted on an inner surface of the housing 9, the rotor 7 is fixed on the motor shaft 5, the housing 9 is horizontally arranged, the end cover 3 and the transition flange 14 are respectively fixed at left and right ends of the housing 9, and a motor cavity is formed between the housing 9 and the end cover 3 and the transition flange 14. In this embodiment, the oil-cooled motor is horizontally installed, the oil-cooled motor is connected with the compressor head, the transition flange 14 plays a role in intermediate transition connection, and is respectively connected with the shell 9 of the motor and the compressor head, in this embodiment, the transition flange 14 also plays a role as an end cover, which is equivalent to the end cover on the right side of the shell 9 as shown in fig. 1.
The machine head shaft 15 passes through the transition flange 14 and is fixedly connected with one end of the motor shaft 5, the other end of the motor shaft 5 is connected with the end cover 3 through the bearing 4, and the machine head shaft 15 is fixedly connected with the motor shaft 5 through a stud 6 penetrating through the motor shaft 5.
The end cap 3 forms an oil passing cavity 21 with the end of the motor shaft 5 and the bearing 4. The end cover 3 is provided with a first oil inlet 2 and a second oil outlet 19, the first oil inlet 2 is communicated with the oil passing cavity, and the second oil outlet 19 is communicated with the motor cavity. The transition flange 14 is provided with a second oil inlet 12 and a first oil outlet 17, and the second oil inlet 12 and the first oil outlet 17 are communicated with the motor cavity. And the first oil inlet 2, the second oil inlet 12, the first oil outlet 17 and the second oil outlet 19 are respectively provided with a glib 22, 10, 18 and 20.
The cooling oil can enter the motor cavity from the first oil inlet 2 and the second oil inlet 12 in two ways, and then is discharged from the first oil outlet 17 and the second oil outlet 19 in two ways. The cooling oil enters the oil passing cavity 21 from the first oil inlet 2 and can enter the motor cavity through the bearing 4 to lubricate the bearing 4. The cooling oil can directly contact with the inside of the motor through the gap between the motor stator 8 and the rotor 7, and takes away the heat in the motor. By adopting two paths of oil inlet and outlet, the circulation efficiency of cooling oil can be improved.
In this embodiment, the number of the first oil inlet 2, the second oil inlet 12, the first oil outlet 17 and the second oil outlet 19 is one, and of course, the number may be increased as required.
The first oil inlet 2 is provided with a solenoid valve 1, and the solenoid valve 1 is connected with the first oil inlet 2 through a nozzle 22. The electromagnetic valve 1 can control the oil inlet amount of cooling oil and the oil inlet amount.
And a sealing ring 16 is arranged between the nose shaft 15 and the transition flange 14, so that leakage of cooling oil in the motor can be prevented.
The transition flange 14 is provided with an exhaust port 13, and the exhaust port 13 is communicated with the motor cavity. When the motor is stopped, a small amount of high-pressure air in the compressor head leaks into the motor cavity through the sealing ring 16 at the joint, and a small amount of leaked air can be discharged out of the closed motor cavity through the air outlet 13. The exhaust port 13 is provided with an exhaust valve (not shown in the drawings), which is connected to the exhaust port 13 through an exhaust valve joint 11.
As a modification of this embodiment, only the first oil inlet 2 and the first oil outlet 17 may be provided, the cooling oil enters the oil passing cavity 21 from the first oil inlet 2, may enter the motor cavity through the bearing 4, and plays a role in lubricating the bearing 4, and the cooling oil directly contacts the motor through a gap between the motor stator 8 and the rotor 7, and is discharged from the first oil outlet 17 to take away heat in the motor.
Embodiment two:
compared with the first embodiment, the oil-cooled motor of the present embodiment is vertically installed. As shown in fig. 2, the oil-cooled motor for a compressor of the present embodiment includes a stator 108, a rotor 107, a housing 109, an end cover 103, a transition flange 114, and a motor shaft 105 for driving a head shaft 115 of the compressor to rotate, the stator 108 is fixedly mounted on an inner surface of the housing 109, the rotor 107 is fixed on the motor shaft 105, the housing 109 is vertically arranged, the end cover 103 and the transition flange 114 are respectively fixed at upper and lower ends of the housing 109, and a motor cavity is formed between the housing 109 and the end cover 103 and the transition flange 114.
The nose shaft 11 is fixedly connected with one end of the motor shaft 105 through the transition flange 114, and the nose shaft 115 is fixedly connected with the motor shaft 105 through a stud 106 penetrating through the motor shaft 105.
An oil inlet 102 is formed in the end cover 103, and the oil inlet 102 is communicated with the motor cavity; an oil outlet 117 is arranged on the transition flange 114, and the oil outlet 117 is communicated with the motor cavity. The oil inlet 102 and the oil outlet 117 are respectively provided with a glib 122 and a 118.
The cooling oil can enter the motor cavity from the oil inlet 102, directly contact with the interior of the motor through a gap between the motor stator 8 and the rotor 7, take away heat in the interior of the motor, and then be discharged from the oil outlet 117.
The motor shaft 105 of the vertically installed oil cooling motor is directly connected with the machine head shaft 115, and the two ends of the motor shaft 105 are not supported by bearings, so that friction in the motor rotation process can be reduced, and the overall performance of the motor is greatly improved.
The oil inlet 102 is provided with a solenoid valve 101, and the solenoid valve 101 is connected with the oil inlet 102 through a nipple 122. The solenoid valve 101 can control the oil intake of the cooling oil and the amount of the oil intake.
A sealing ring 116 is arranged between the nose shaft 115 and the transition flange 114, so that leakage of cooling oil in the motor can be prevented.
The end cover 103 is provided with an exhaust port 113, and the exhaust port 113 is communicated with the motor cavity. When the motor is stopped, a small amount of high-pressure air in the compressor head leaks into the motor cavity through the sealing ring 116 at the joint, and at the moment, the leaked small amount of air can be discharged out of the closed motor cavity through the air outlet 113. The exhaust port 113 is provided with an exhaust valve (not shown in the drawing), and the exhaust valve is connected to the exhaust port 113 through an exhaust valve joint 111.
The two embodiments of the invention provide oil-cooled motors with both horizontal and vertical mounting modes to meet different mounting requirements. The motor that the level was arranged is equipped with two way oil feed passageway and two way oil outlet channel, has further improved the circulation rate of cooling oil, improves cooling efficiency, and the inside cooling oil that gets into the motor can play bearing lubrication's effect simultaneously. The oil cooling motor shaft and the machine head shaft which are vertically arranged are directly connected, so that a bearing at the end part is omitted, the friction resistance in the working process of the motor is further reduced, and the working efficiency is improved. The motors in two arrangement modes are provided with exhaust valve interfaces, and when the motors are stopped, air leaking into the motors from the compressors can be discharged in time. The oil-cooled motor greatly improves the cooling efficiency and the working performance of the motor, and has important significance for developing a high-performance compressor.
As described above, exemplary embodiments of the present invention are described in detail with reference to the accompanying drawings. It should be understood that the invention is not intended to be limited to these specific details as set forth in the following description. Equivalent or similar changes to the structure and features of the exemplary embodiments may be made without departing from the spirit and scope of the present invention, which changes will also fall within the protection scope of the invention as defined in the appended claims.
Claims (9)
1. An oil-cooled motor for a compressor comprises a stator, a rotor, a shell, an end cover, a transition flange and a motor shaft for driving a head shaft of the compressor to rotate, wherein the stator is fixedly arranged on the inner surface of the shell, the rotor is fixed on the motor shaft, the shell is horizontally arranged, the end cover and the transition flange are respectively fixed at the left end and the right end of the shell, a motor cavity is formed between the shell and the end cover and the transition flange,
the machine head shaft penetrates through the transition flange and is fixedly connected with one end of the motor shaft, and the other end of the motor shaft is connected with the end cover through a bearing;
the end cover, the end part of the motor shaft and the bearing form an oil passing cavity;
the end cover is provided with a first oil inlet which is communicated with the oil passing cavity;
the transition flange is provided with a first oil outlet which is communicated with the motor cavity;
and the transition flange is provided with an exhaust port, and the exhaust port is communicated with the motor cavity.
2. The oil cooled motor for a compressor of claim 1, wherein the transition flange is provided with a second oil inlet and the end cap is provided with a second oil outlet, the second oil inlet and second oil outlet being in communication with the motor cavity.
3. An oil cooled motor for a compressor as claimed in claim 2, wherein the discharge port is provided with a discharge valve, the discharge valve being connected to the discharge port through a discharge valve joint.
4. An oil-cooled motor for a compressor as claimed in claim 1 or 2, characterized in that the first oil inlet is provided with a solenoid valve, which is connected to the first oil inlet via a nipple.
5. An oil-cooled motor for a compressor as claimed in claim 1 or 2, wherein a sealing ring is provided between the nose shaft and the transition flange.
6. An oil-cooled motor for a compressor comprises a stator, a rotor, a shell, an end cover, a transition flange and a motor shaft for driving a head shaft of the compressor to rotate, wherein the stator is fixedly arranged on the inner surface of the shell, the rotor is fixed on the motor shaft, the shell is vertically arranged, the end cover and the transition flange are respectively fixed at the upper end and the lower end of the shell, a motor cavity is formed between the shell and the end cover and the transition flange,
the machine head shaft penetrates through the transition flange and is fixedly connected with one end of the motor shaft;
an oil inlet is formed in the end cover and is communicated with the motor cavity;
an oil outlet is arranged on the transition flange and is communicated with the motor cavity;
and the end cover is provided with an exhaust port which is communicated with the motor cavity.
7. An oil cooled motor for a compressor as recited in claim 6, wherein the discharge port is provided with a discharge valve connected to the discharge port through a discharge valve joint.
8. The oil-cooled motor for a compressor of claim 6, wherein the oil inlet is provided with a solenoid valve, and the solenoid valve is connected with the oil inlet through a nipple.
9. An oil cooled motor for a compressor as recited in claim 6 wherein a seal ring is disposed between said nose shaft and said transition flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710703177.1A CN107359746B (en) | 2017-08-16 | 2017-08-16 | Oil-cooled motor for compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710703177.1A CN107359746B (en) | 2017-08-16 | 2017-08-16 | Oil-cooled motor for compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107359746A CN107359746A (en) | 2017-11-17 |
| CN107359746B true CN107359746B (en) | 2023-08-22 |
Family
ID=60287346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710703177.1A Active CN107359746B (en) | 2017-08-16 | 2017-08-16 | Oil-cooled motor for compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107359746B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112467941A (en) * | 2020-12-29 | 2021-03-09 | 中克骆瑞新能源科技有限公司 | Oil-cooled motor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201827074U (en) * | 2010-07-27 | 2011-05-11 | 苏州通润驱动设备股份有限公司 | Twin-screw air compressor |
| CN102235356A (en) * | 2011-07-06 | 2011-11-09 | 德斯兰压缩机(上海)有限公司 | Mechanically and electrically integrated screw rod compressor |
| CN103299517A (en) * | 2010-08-25 | 2013-09-11 | 克里恩威孚科技公司 | Systems and methods for fluid cooling of electric machines |
| CN103401353A (en) * | 2013-07-27 | 2013-11-20 | 宁波德曼压缩机有限公司 | Oil-cooled screw air compressor coaxial with motor |
| CN106899098A (en) * | 2017-03-23 | 2017-06-27 | 烟台冰轮股份有限公司 | A kind of half envelope Spiral Lobe Refrigeration Compressor based on oil-cooled motor |
-
2017
- 2017-08-16 CN CN201710703177.1A patent/CN107359746B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201827074U (en) * | 2010-07-27 | 2011-05-11 | 苏州通润驱动设备股份有限公司 | Twin-screw air compressor |
| CN103299517A (en) * | 2010-08-25 | 2013-09-11 | 克里恩威孚科技公司 | Systems and methods for fluid cooling of electric machines |
| CN102235356A (en) * | 2011-07-06 | 2011-11-09 | 德斯兰压缩机(上海)有限公司 | Mechanically and electrically integrated screw rod compressor |
| CN103401353A (en) * | 2013-07-27 | 2013-11-20 | 宁波德曼压缩机有限公司 | Oil-cooled screw air compressor coaxial with motor |
| CN106899098A (en) * | 2017-03-23 | 2017-06-27 | 烟台冰轮股份有限公司 | A kind of half envelope Spiral Lobe Refrigeration Compressor based on oil-cooled motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107359746A (en) | 2017-11-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102013510B1 (en) | Screw compressor | |
| CN107250547B (en) | Without oil feeding type compressor | |
| CN108429384A (en) | The sealing structure at motor-shaft extending end | |
| CN106704176B (en) | A kind of cooling system of lobe pump | |
| WO2019218472A1 (en) | Screw rod compressor using sliding bearings | |
| CN107359746B (en) | Oil-cooled motor for compressor | |
| CN207879864U (en) | A kind of numerically-controlled machine tool gear-box main motor shaft bearing lubrication structure | |
| JP2008303781A (en) | Screw compressor | |
| CN209990681U (en) | Pitot tube pump bearing lubricating system | |
| CN209299038U (en) | The motor of oil-leakage-prevention temperature rise | |
| JPH056037B2 (en) | ||
| JP2008232005A (en) | Screw compressor | |
| CN206860479U (en) | A kind of high-speed centrifugal vapour compression machine | |
| CN207283345U (en) | Oil-cooled motor for compressor | |
| JP2016200058A (en) | Oil supply type displacement compressor | |
| CN213125770U (en) | Permanent magnet motor of bearing oil-cooled air compressor | |
| CN108843569A (en) | Water spray double-screw compressor | |
| CN205013690U (en) | Two way seal isolating device | |
| CN106286299A (en) | Low back pressure horizontal compressor and refrigeration system | |
| CN208595060U (en) | Water spray double-screw compressor | |
| CN208595061U (en) | A kind of water spray double-screw compressor | |
| CN206917919U (en) | A kind of auto pump | |
| CN106286298B (en) | Low back pressure horizontal compressor and refrigeration system | |
| CN217682421U (en) | Forced air cooling self-lubricating bearing component | |
| CN109639023A (en) | The motor of oil-leakage-prevention temperature rise and the method for preventing motor exterior and interior cover oil leak bearing temperature rise |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |