CN216342635U - Permanent magnet frequency conversion air compressor - Google Patents
Permanent magnet frequency conversion air compressor Download PDFInfo
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- CN216342635U CN216342635U CN201922399642.4U CN201922399642U CN216342635U CN 216342635 U CN216342635 U CN 216342635U CN 201922399642 U CN201922399642 U CN 201922399642U CN 216342635 U CN216342635 U CN 216342635U
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Abstract
The utility model provides a permanent magnet variable frequency air compressor, which consists of a permanent magnet main machine, an air compressor box body, an air inlet valve, a minimum pressure valve, an oil-gas separation tank, a frequency converter box, an electric part, a frequency converter, a pipeline system, an air inlet and a control panel. The permanent magnet main machine rotor is designed by adopting an asymmetric tooth-shaped screw rod, is made of a neodymium iron boron rare earth permanent magnet and is arranged at the bottom of the air compressor box body. An air inlet valve is arranged above the permanent magnet main machine, the oil-gas separation tank is connected with the permanent magnet main machine through a pipeline, and a minimum pressure valve is arranged at the top of the oil-gas separation tank. The air compressor box is characterized in that an air inlet and a control panel are arranged outside the air compressor box, the air inlet is formed in the top of the air compressor box, the control panel is arranged on the outer side surface of the air compressor box, and a frequency converter and an electric component are fixed in the frequency converter box in a hanging mode. The air consumption which changes constantly can be responded quickly, and the noise and the energy consumption are reduced.
Description
Technical Field
The utility model belongs to the field of air compressors, and particularly relates to a variable-frequency air compressor.
Technical Field
The air compressor is a kind of equipment for compressing gas, and is widely applied to the production and living fields of airplane manufacturing industry, automobile manufacturing industry, chemical plants, thermal power plants, hydraulic power plants, steel plants and the like. The air compressor mainly includes several types, such as positive displacement compressor, piston compressor, rotary compressor, etc., among which the screw compressor is one of the most commonly used rotary positive displacement compressors.
In the air compressor system, the initial purchase cost only accounts for 8% of the total cost, and the operation energy consumption cost accounts for about 86%, and the high operation energy consumption cost invisibly increases the operation cost of enterprises. The general output power of the air compressor also improves energy consumption under different conditions, so that emission reduction and consumption reduction are always development directions in the field of the air compressor.
Disclosure of Invention
The utility model aims to provide a permanent magnet variable frequency air compressor which can quickly respond to constantly changing air consumption and reduce noise and energy consumption.
In order to achieve the purpose, the utility model adopts the technical scheme that:
the utility model relates to a permanent magnet variable frequency air compressor, which consists of a permanent magnet main machine (1), an air compressor box body (2), an air inlet valve (3), a minimum pressure valve (4), an oil-gas separation tank (5), a frequency converter box (6), an electric component (7), a frequency converter (8), a pipeline system (9), an air inlet (10) and a control panel (11).
The rotor of the permanent magnet main machine (1) is made of a neodymium iron boron rare earth permanent magnet, the rotor is designed by an asymmetric tooth-shaped screw rod and is installed at the bottom of the air compressor box body (2), and an air inlet valve (3) is arranged above the permanent magnet main machine (1).
The oil-gas separation tank (5) is connected with the permanent magnet host (1) through a pipeline, and the minimum pressure valve (4) is arranged at the top of the oil-gas separation tank (5).
The air compressor box body (2) is externally provided with an air inlet (10) and a control panel (11), the air inlet (10) is formed in the top of the air compressor box body (2), and the control panel (11) is formed in the outer side face of the air compressor box body (2). And the frequency converter (8) and the electric component (7) are suspended and fixed in the frequency converter box (6).
Furthermore, the permanent magnet main machine (1) adopts a 5:6 asymmetric tooth-shaped screw design, and an electromagnetic coil in the permanent magnet main machine (1) adopts a corona-resistant enameled wire.
Preferably, a fan is arranged in the frequency converter (8).
Preferably, the air inlet (10) is provided with a louver with a filter screen.
The utility model has the following beneficial effects:
(1) the electricity consumption is reduced, and the operation cost is reduced for users;
(2) the conditions of frequent start-up and shut-down and loading and unloading are avoided, the operation flow is simplified, the start energy consumption is reduced, the impact current is limited below 100%, the maximum power load is reduced, the consumed electric energy is greatly reduced, and the service life of the motor is not influenced by a large amount of start-up and shut-down;
(3) when the gas consumption is suddenly changed, the quick response can be carried out, the reaction time is within 50ms, the system pressure can be accurately stabilized within +/-0.05 bar, the equipment damage caused by pressure fluctuation is avoided, and the energy loss is further reduced;
(4) the controller is ensured to rapidly stop the motor from running when the gas utilization is suspended, the internal pressure of the system is released without unloading, the system directly enters the dormancy state, and the system is rapidly started after the gas utilization is recovered.
Drawings
Fig. 1 is an internal structure view of an air compressor according to the present invention.
Fig. 2 is an external structural view of an air compressor according to the present invention.
Fig. 3 is an overall schematic view of the air compressor according to the present invention.
Detailed Description
The utility model relates to a permanent magnet frequency conversion air compressor, which consists of a permanent magnet main machine 1, an air compressor box body 2, an air inlet valve 3, a minimum pressure valve 4, an oil-gas separation tank 5, a frequency converter box 6, an electric part 7, a frequency converter 8, a pipeline system 9, an air inlet 10 and a control panel 11.
The rotor of the permanent magnet host 1 is made of neodymium iron boron rare earth permanent magnets, the rotor adopts an asymmetric tooth-shaped screw design, complete sealing of curved surfaces between the rotors can be achieved, the area between teeth is increased, and the influence of a leakage triangular area is relatively reduced. Permanent magnetism host computer 1 is installed in air compressor machine box 2 bottom, and permanent magnetism host computer 1 top is provided with admission valve 3.
The oil-gas separation tank 5 is connected with the permanent magnet host 1 through a pipeline, and the minimum pressure valve 4 is arranged at the top of the oil-gas separation tank 5.
Air intake 10, control panel 11 are provided with to the outside of air compressor box 2, and air intake 10 sets up in the top of air compressor box 2, and control panel 11 sets up in 2 lateral surfaces of air compressor box.
The frequency converter 8 and the electrical component 7 are fixed in the frequency converter box 6 in a suspended mode, the frequency conversion control system can automatically adjust the gas production amount and the temperature of the system, constant-temperature operation is kept, and frequent starting, stopping, loading and unloading of the air compressor are avoided.
The permanent magnet main machine 1 adopts a 5:6 asymmetric tooth-shaped screw design, so that oil films are favorably formed, abrasion is reduced, gas disturbance loss is effectively reduced, noise is reduced, and the efficiency of the air compressor is improved. The electromagnetic coil in the permanent magnet host 1 adopts corona-resistant enameled wire, so that the insulation property is high, the current cannot exceed the full load current when the motor runs, and the impact on power grid equipment is greatly reduced.
A fan is arranged in the frequency converter 8, so that heat generated in the unit enters the frequency conversion box 6, and the frequency converter 8 and the electric component 7 are prevented from running at high temperature.
Preferably, the air inlet 10 is provided with a louver with a filter screen.
After the power is switched on, the permanent magnet main machine 1 is started. After a set time, the rotating speed is increased from a low speed to a rated rotating speed and reaches a rated torque, at the moment, the air inlet valve 3 is in a micro-starting state, the minimum pressure valve 4 is in a closing state, the starting pressure is basically maintained at 2.2-2.5 bar, and the light-load starting of the air compressor is realized.
When the system pressure exceeds 4bar, the minimum pressure valve 4 is opened, the unit starts to supply air outwards, the air inlet valve 3 is in a full-open state at the moment, the unit operates under a load, then the system pressure quickly reaches the rated pressure, the permanent magnet main machine 1 operates at full pressure, and the unit enters a normal operation working condition.
When the gas consumption is increased and the pipeline pressure is lower than a set value, the rotating speed of the permanent magnet main machine 1 is increased, and the unit enters a load running state.
When the gas consumption is reduced, the pressure of a pipeline is higher than a set value, the rotating speed of the permanent magnet main machine 1 is reduced along with the reduction of the gas consumption, if the pressure of the pipeline is lower than 4.5bar, the minimum pressure valve 4 is closed, the pipeline of a user is separated from the unit, the unit operates under a lower back pressure in a no-load mode, the pressure is basically maintained within the range of 2.2-2.5 bar, the normal circulation of lubricating oil is guaranteed, and energy consumption is saved.
The permanent magnet frequency conversion air compressor has the advantages of low noise, high stability and low power consumption, and is suitable for manufacturing industries with various air consumption changes and severe working conditions.
Claims (5)
1. A permanent magnet frequency conversion air compressor comprises a permanent magnet main machine (1), an air compressor box body (2), an air inlet valve (3), a minimum pressure valve (4), an oil-gas separation tank (5), a frequency converter box (6), an electrical component (7), a frequency converter (8), a pipeline system (9), an air inlet (10) and a control panel (11), wherein a rotor of the permanent magnet main machine (1) adopts an asymmetric tooth-shaped screw design, is made of a neodymium-iron-boron rare earth permanent magnet and is arranged at the bottom of the air compressor box body (2), the air inlet valve (3) is arranged above the permanent magnet main machine (1), the oil-gas separation tank (5) is connected with the permanent magnet main machine (1) through a pipeline, the minimum pressure valve (4) is arranged at the top of the oil-gas separation tank (5), the air inlet (10) and the control panel (11) are arranged outside the air compressor box body (2), and the air inlet (10) is arranged at the top of the air compressor box body (2), control panel (11) set up in air compressor machine box (2) lateral surface, inside unsettled fixed converter (8) of converter case (6) and electrical component (7).
2. The permanent magnet inverter air compressor according to claim 1, characterized in that a fan is arranged in the inverter (8).
3. The permanent magnet variable frequency air compressor according to claim 1, characterized in that the air inlet (10) is provided with a louver with a filter screen.
4. The permanent magnet frequency conversion air compressor according to claim 1, wherein the permanent magnet main machine (1) adopts a 5:6 asymmetric tooth-shaped screw design.
5. The permanent magnet frequency-conversion air compressor according to claim 1, characterized in that the electromagnetic coil in the permanent magnet main unit (1) is corona-resistant enameled wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922399642.4U CN216342635U (en) | 2019-12-27 | 2019-12-27 | Permanent magnet frequency conversion air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922399642.4U CN216342635U (en) | 2019-12-27 | 2019-12-27 | Permanent magnet frequency conversion air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216342635U true CN216342635U (en) | 2022-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922399642.4U Active CN216342635U (en) | 2019-12-27 | 2019-12-27 | Permanent magnet frequency conversion air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216342635U (en) |
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2019
- 2019-12-27 CN CN201922399642.4U patent/CN216342635U/en active Active
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