CN220869654U - Cooling system of movable oil injection screw compressor - Google Patents
Cooling system of movable oil injection screw compressor Download PDFInfo
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- CN220869654U CN220869654U CN202322472269.7U CN202322472269U CN220869654U CN 220869654 U CN220869654 U CN 220869654U CN 202322472269 U CN202322472269 U CN 202322472269U CN 220869654 U CN220869654 U CN 220869654U
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- temperature sensor
- variable frequency
- frequency motor
- exhaust temperature
- compressor
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- 238000001816 cooling Methods 0.000 title claims abstract description 30
- 238000002347 injection Methods 0.000 title abstract description 7
- 239000007924 injection Substances 0.000 title abstract description 7
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 19
- 239000003921 oil Substances 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 5
- 238000007664 blowing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The embodiment of the application provides a cooling system of a movable oil injection screw compressor, which comprises a bidirectional fan, a variable frequency motor, a frequency converter, an exhaust temperature sensor and an ambient temperature sensor; the bidirectional fan is connected to the output shaft of the variable frequency motor and can rotate forward or reversely under the drive of the variable frequency motor so as to blow or suck air in the direction of the cooler; the variable frequency motor, the exhaust temperature sensor and the environment temperature sensor are all electrically connected with the frequency converter, and the frequency converter can automatically adjust the rotation frequency of the variable frequency motor according to the received exhaust temperature signal and the environment temperature signal, so that the cooling air quantity of the bidirectional fan is adjusted, the exhaust temperature which is caused by too low air quantity can be prevented from being too high, and the cooler which is caused by too high air quantity can be prevented from being blocked.
Description
Technical Field
The utility model relates to the field of air compressors, in particular to a cooling system of a movable oil injection screw compressor.
Background
At present, the movable oil injection screw compressors on the market are roughly divided into diesel-driven air compressors and electric-driven air compressors according to different driving parts, wherein the electric-driven air compressors are zero-emission versions of the air compressors, the unit does not produce emission, the noise is low, the use is convenient, the total possession cost is lower than that of other non-electric-driven air compressors, the reliability of the machine is higher, and the shutdown time can be effectively reduced.
The cooler of the electric drive type air compressor is mainly used for cooling lubricating oil of the head of the air compressor and compressed air at the exhaust end. For the cooling air supply of the cooler, the current electric drive type and the diesel drive type are different, the electric drive type air compressor is not connected with a fan through a crank shaft, and an independent fan motor is required to be configured for the cooling air supply of the cooler.
As shown in fig. 1, when the ambient temperature is high, the cooling air is supplied in a blowing mode, and is introduced from the tank side of the oil-gas separator or the left side and the right side of the unit, and is discharged outside the case after passing through the outer fins of the cooler; the mode can discharge heat generated by the motor in the case and the working of the compressor main machine to the outside of the case, and ensures that the air inlet temperature of the compressor main machine is as low as possible.
As shown in fig. 2, when the ambient temperature is low, the blowing fan needs to be replaced by the air suction fan, because the air contains moisture, if the interior of the case is always cold air, the air control pipeline can be frozen, and the normal regulation cannot be performed, so that the machine is in fault; the induced draft fan can bring the heat of the cooler into the case, so that the temperature inside the case is always in a zero state, and the air control pipeline is prevented from being frozen.
The cooling form described above, however, also suffers from several problems during use:
1. along with the change of the ambient temperature, the cooling mode needs to be switched between the blowing type and the air suction type in a reciprocating way, and each switching needs to be manually disassembled and replaced, so that time and labor are wasted; and fan motor is usually power frequency motor, can't automatically regulated amount of wind, causes the electric power waste easily under the occasion that the cooling air quantity demand is less.
2. When the ambient temperature is extremely severe in winter, the possibility of icing of the pneumatic control pipeline is solved by adopting an induced draft cooling mode, but a large amount of cold air enters the outer fins of the cooler from the side of the cooler, so that lubricating oil in the cooler becomes viscous, part of cooler channels can be blocked, the cooling performance of the cooler is reduced, the exhaust temperature of the unit is too high to stop, and the cooler can be seriously leaked due to temperature alternation and expansion and contraction of a flow channel.
Disclosure of utility model
In view of the above, embodiments of the present utility model provide a cooling system of a mobile oil-injected screw compressor capable of switching a cooling wind direction and adjusting a cooling wind amount.
The embodiment of the utility model provides a cooling system of a movable oil injection screw compressor, which comprises a bidirectional fan, a variable frequency motor, a frequency converter, an exhaust temperature sensor and an environment temperature sensor; the bidirectional fan is connected to the output shaft of the variable frequency motor, so that the bidirectional fan can rotate forward or reversely under the drive of the variable frequency motor to blow or suck air in the direction of the cooler;
The exhaust temperature sensor is used for measuring the exhaust temperature of the whole compressor, and the environment temperature sensor is used for measuring the environment temperature of the whole compressor; the variable frequency motor, the exhaust temperature sensor and the environment temperature sensor are all electrically connected with the frequency converter, and the frequency converter is configured to be capable of automatically adjusting the rotation frequency of the variable frequency motor according to the received exhaust temperature signal and the received environment temperature signal.
Optionally, the exhaust temperature sensor is disposed in an exhaust pipeline of the compressor main unit, and the ambient temperature sensor is disposed in a case of the compressor main unit.
Optionally, the bidirectional fan is provided with a plurality of axial flow fan blades, and each axial flow fan blade is formed with a symmetrical axial flow curved surface.
Optionally, the frequency converter is also connected with a forward and reverse rotation knob for controlling the forward rotation or the reverse rotation of the frequency conversion motor.
The embodiment of the utility model has the following beneficial effects:
1. Adopt two-way fan to carry out the cooling air supply, two-way fan can be under inverter motor's drive corotation or reversal to blow or induced draft towards the direction of cooler, need not to dismantle the wind direction switching that changes can realize cooling system, the simple operation.
2. Adopt inverter motor drive two-way fan to rotate, inverter motor and converter electricity are connected, and the converter can be according to the rotation frequency of received exhaust temperature signal and ambient temperature signal automatically regulated inverter motor to adjust the cooling amount of wind of two-way fan, can prevent that the exhaust temperature that the amount of wind is too low from being too high, can prevent again that the amount of wind is too high from leading to the cooler to block up.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a blowing type cooling air supply for an electrically driven air compressor;
FIG. 2 is a schematic diagram of the supply of induced draft cooling air to an electrically driven air compressor;
FIG. 3 is a schematic diagram of an embodiment of the present utility model;
FIG. 4 is a schematic diagram of a connection according to an embodiment of the present utility model;
the figures represent the numbers:
1. a bidirectional fan; 2. a variable frequency motor; 3. a frequency converter; 4. an exhaust gas temperature sensor; 5. an ambient temperature sensor; 6. and (5) rotating the knob in the forward and reverse directions.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.
Referring to fig. 3 and 4, an embodiment of the present utility model provides a cooling system of a mobile oil injection screw compressor, which includes a bidirectional fan 1, a variable frequency motor 2, a frequency converter 3, an exhaust temperature sensor 4 and an ambient temperature sensor 5; the bidirectional fan 1 is connected to an output shaft of the variable frequency motor 2, and the variable frequency motor 2 can drive the bidirectional fan 1 to rotate forward or reversely, so that the bidirectional fan 1 blows or sucks air towards the direction of the cooler, and the requirement of wind direction switching of a cooling system is met. Further, the bidirectional fan 1 in the present embodiment is provided with a plurality of axial flow fan blades, each of which is formed with a symmetrical axial flow curved surface (for example, the R4Z series fan of WingFan company), and the symmetrical axial flow curved surface can provide the air with the same flow rate when the bidirectional fan 1 rotates forward or backward, so as to achieve the same air supply effect.
The exhaust temperature sensor 4 is arranged in an exhaust pipeline of the compressor main machine and is used for measuring the exhaust temperature of the compressor whole machine; the environmental temperature sensor 5 is arranged in the case of the whole compressor and is used for measuring the environmental temperature of the whole compressor. The variable frequency motor 2, the exhaust temperature sensor 4 and the environmental temperature sensor 5 are all electrically connected with the frequency converter 3, the exhaust temperature sensor 4 and the environmental temperature sensor 5 can transmit measured real-time temperature to the frequency converter 3, and the frequency converter 3 is pre-provided with relevant control parameters in advance, so that the frequency converter 3 can automatically adjust the rotation frequency of the variable frequency motor 2 according to received exhaust temperature signals and environmental temperature signals, and the cooling air volume of the bidirectional fan 1 is adjusted, so that the exhaust temperature caused by too low air volume can be prevented from being too high, and the cooler is prevented from being blocked due to too high air volume.
In addition, the frequency converter 3 is also connected with a forward and reverse rotation knob 6 for controlling the forward rotation or the reverse rotation of the frequency conversion motor 2, the forward and reverse rotation knob 6 is connected with a corresponding port of the frequency converter 3 in a signal mode, and meanwhile, the frequency converter 3 is set to be reverse rotation, so that the forward and reverse rotation switching of the frequency conversion motor 2 can be realized under the condition that a motor wire is not required to be disassembled and assembled, and the on-site use of a customer is facilitated.
The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of the above examples is only for aiding in understanding the technical solution of the present utility model and its core ideas; those of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (4)
1. A cooling system for a mobile oil injected screw compressor, comprising: the device comprises a bidirectional fan, a variable frequency motor, a frequency converter, an exhaust temperature sensor and an environment temperature sensor; the bidirectional fan is connected to the output shaft of the variable frequency motor, so that the bidirectional fan can rotate forward or reversely under the drive of the variable frequency motor to blow or suck air in the direction of the cooler;
The exhaust temperature sensor is used for measuring the exhaust temperature of the whole compressor, and the environment temperature sensor is used for measuring the environment temperature of the whole compressor; the variable frequency motor, the exhaust temperature sensor and the environment temperature sensor are all electrically connected with the frequency converter, and the frequency converter is configured to be capable of automatically adjusting the rotation frequency of the variable frequency motor according to the received exhaust temperature signal and the received environment temperature signal.
2. The cooling system of a mobile oil injected screw compressor of claim 1 wherein: the exhaust temperature sensor is arranged in an exhaust pipeline of the compressor main unit, and the environment temperature sensor is arranged in a case of the compressor whole machine.
3. The cooling system of a mobile oil injected screw compressor of claim 1 wherein: the bidirectional fan is provided with a plurality of axial flow fan blades, and each axial flow fan blade is provided with a symmetrical axial flow curved surface.
4. The cooling system of a mobile oil injected screw compressor of claim 1 wherein: the frequency converter is also connected with a forward and reverse rotation knob for controlling the forward rotation or the reverse rotation of the variable frequency motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322472269.7U CN220869654U (en) | 2023-09-12 | 2023-09-12 | Cooling system of movable oil injection screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322472269.7U CN220869654U (en) | 2023-09-12 | 2023-09-12 | Cooling system of movable oil injection screw compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220869654U true CN220869654U (en) | 2024-04-30 |
Family
ID=90814232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322472269.7U Active CN220869654U (en) | 2023-09-12 | 2023-09-12 | Cooling system of movable oil injection screw compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220869654U (en) |
-
2023
- 2023-09-12 CN CN202322472269.7U patent/CN220869654U/en active Active
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