CN213484682U - Oil-free screw compressor - Google Patents
Oil-free screw compressor Download PDFInfo
- Publication number
- CN213484682U CN213484682U CN202022484526.5U CN202022484526U CN213484682U CN 213484682 U CN213484682 U CN 213484682U CN 202022484526 U CN202022484526 U CN 202022484526U CN 213484682 U CN213484682 U CN 213484682U
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- motor
- compressor
- oil
- free screw
- cooling
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Abstract
The utility model provides an oil-free screw compressor, it is including the compressor side and the motor side that are connected, the compressor side is including the compressor shell that connects gradually, the gear box, the compressor protecgulum, the motor side is including the motor protecgulum and the motor shell that connect gradually, the gear box with be equipped with the cooling layer between the motor side. The utility model provides an oil-free screw compressor sets up cooling device between gear box and motor side, and the heat of having avoided the gear box is to the transmission of motor side, has played thermal-insulated effect, has prolonged the life of compressor.
Description
Technical Field
The utility model relates to a compressor, in particular to oil-free screw compressor.
Background
Oil-free screw dry compressor's operation leans on motor drive gear, and the gear drives the public female rotor and rotates, and oil-free screw dry compressor exhaust temperature is higher on the one hand, and the heat passes through casing transmission to gear box, and on the other hand, because gear box inner space is little and sealed, adopts the mode of dialling oil to lubricate gear and bearing and can produce great heat. The oil temperature of the gear is too high, the viscosity is reduced, and even the gear is blocked in severe cases. In addition, because the motor runs at a high speed, under a high load, the temperature of the shaft and the rotor can be greatly increased, the temperature of the rotor is too high, and the permanent magnet can be demagnetized, so that the normal operation of the compressor is influenced.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome prior art's defect, provide an oil-free screw compressor.
The utility model discloses an above-mentioned technical problem is solved through following technical scheme:
the utility model provides an oil-free screw compressor, its compressor side and motor side including being connected, the compressor side is including the compressor housing that connects gradually, the gear box, the compressor protecgulum, the motor side is including the motor protecgulum and the motor housing that connect gradually, its characterized in that, the gear box with be equipped with the cooling layer between the motor side. A cooling tank is added at the joint of the motor and the gear box, so that circulating cooling liquid for cooling the motor passes through the joint of the motor and the gear box, the heat in the gear box is taken away, the temperature is reduced, and the oil-free screw dry compressor can run more safely and stably; the rotor shaft and the front bearing of the motor can be cooled to a certain extent through circulating cooling water, and heat in the gear box is isolated from being transferred to the motor side.
The surface of the motor shell is provided with a motor shell water channel, and cooling liquid flows through the motor shell water channel; the cooling layer comprises a cooling groove arranged on the side, facing the motor shell, of the front cover of the motor, and the cooling groove is communicated with a water channel of the motor shell.
The motor comprises a motor shell, a motor rotor is arranged in the motor shell, a fan device is arranged at the tail end of a rotating shaft of the motor rotor, and the rotating shaft of the fan device is overlapped with the rotating shaft of the motor rotor. The fan device is arranged at the tail end of the rotating shaft of the motor, circulating air flows in the motor, and the circulating air is cooled by cooling water of the motor shell, so that the temperature in the motor is reduced, and the temperature of the rotating shaft of the motor is reduced.
The motor shell water channel is annularly distributed on the surface of the motor shell.
The cooling tank is spirally or reversely distributed on the end face of the front cover of the motor, the cooling tank is provided with a water inlet and a water outlet, and the water channel of the motor shell is provided with a butt joint which is connected with the water inlet.
In the present invention, the above-mentioned preferred conditions can be combined at will on the basis of general knowledge in the field, so as to obtain the preferred embodiments of the present invention.
The utility model discloses an actively advance the effect and lie in: the utility model provides an oil-free screw compressor sets up the cooling layer between gear box and motor side, and the heat of having avoided the gear box is to the transmission of motor side, has played thermal-insulated effect, has prolonged the life of compressor.
Drawings
Fig. 1 is a sectional view of an oil-free screw compressor according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the motor end cover in fig. 1.
Detailed Description
The present invention will be more clearly and completely described below with reference to the accompanying drawings.
As shown in fig. 1 and 2, the oil-free screw compressor in the present embodiment includes a compressor side constituted by a compressor housing 1 and a compressor front cover 6, in which a male rotor 2 and a gear case 3 are provided, and a pinion gear 5 is provided in an internal chamber 4 of the gear case. The side of the compressor is a motor side which comprises a motor front cover 7 and a motor shell 9. Inside the gear housing internal cavity 4 there are a coupling 12, a main gear 13, bearings 14 and a rotor 15. A motor rotor 10 is provided in the motor side.
A motor shell water channel 8 is arranged on the surface of the motor shell 9, and cooling water flows through the motor shell water channel 8. A cooling layer is arranged between the gear box and the motor side, the cooling layer comprises a cooling groove 71 which is arranged on the side of the motor front cover 7 facing the motor shell, the cooling groove 71 is spirally or reversely distributed on the end surface of the motor front cover and is provided with a water inlet 72 and a water outlet 73 so as to be communicated with the motor shell water channel. A cooling tank is added at the joint of the motor and the gear box, so that circulating cooling liquid for cooling the motor passes through the joint of the motor and the gear box, the heat in the gear box is taken away, the temperature is reduced, and the oil-free screw dry compressor can run more safely and stably; the rotor shaft and the front bearing of the motor can be cooled to a certain extent through circulating cooling water, and heat in the gear box is isolated from being transferred to the motor side.
In addition, the centrifugal fan 11 is arranged at the tail end of the rotating shaft of the motor, the rotating shaft drives the centrifugal fan to rotate when rotating, cooling air flow is guided to the motor spindle and the motor rotor by the centrifugal fan, heat of the motor spindle and the motor rotor is taken away, heat load of the motor spindle and the motor rotor is reduced, and particularly during high load, efficiency and operation stability of the motor can be greatly improved.
The above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to the above embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (5)
1. The utility model provides an oil-free screw compressor, its compressor side and motor side including being connected, the compressor side is including the compressor housing that connects gradually, the gear box, the compressor protecgulum, the motor side is including the motor protecgulum and the motor housing that connect gradually, its characterized in that, the gear box with be equipped with the cooling layer between the motor side.
2. An oil-free screw compressor as claimed in claim 1, wherein a motor housing water channel is provided on a surface of the motor housing, and a cooling liquid circulates in the motor housing water channel; the cooling layer comprises a cooling groove arranged on the side, facing the motor shell, of the front cover of the motor, and the cooling groove is communicated with a water channel of the motor shell.
3. An oil-free screw compressor as claimed in claim 2, wherein a motor rotor is provided in the motor housing, and a fan unit is provided at an end of a rotation shaft of the motor rotor, the rotation shaft of the fan unit coinciding with the rotation shaft of the motor rotor.
4. An oil-free screw compressor as claimed in claim 3, wherein the motor housing water channel is annularly arranged on the surface of the motor housing.
5. An oil-free screw compressor as claimed in claim 4, wherein the cooling channel is spirally or zigzag distributed on the end surface of the front cover of the motor, the cooling channel has a water inlet and a water outlet, and the water channel of the motor housing has a butt joint connected to the water inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022484526.5U CN213484682U (en) | 2020-10-30 | 2020-10-30 | Oil-free screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022484526.5U CN213484682U (en) | 2020-10-30 | 2020-10-30 | Oil-free screw compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213484682U true CN213484682U (en) | 2021-06-18 |
Family
ID=76368996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022484526.5U Active CN213484682U (en) | 2020-10-30 | 2020-10-30 | Oil-free screw compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213484682U (en) |
-
2020
- 2020-10-30 CN CN202022484526.5U patent/CN213484682U/en active Active
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