Magnetic suspension blower inlet comprehensive adjusting system and adjusting method

By using volute, volute diffuser and ternary flow impeller components in the magnetic levitation blower, combined with the axial flow adjustment component, the complex structure and insufficient adjustment of the existing guide vane adjustment device imported by the magnetic levitation blower is solved, and more efficient fan operation and energy recovery are achieved.

CN119878597APending Publication Date: 2025-04-25SHANDONG TIANRUI HEAVY IND CO LTD

Patent Information

Application Number
CN202411896616.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-23
Publication Date
2025-04-25

AI Technical Summary

Technical Problem

The existing imported guide vane adjustment device of magnetic levitation blower has problems such as complex structure, many parts, friction wear and vibration, and cannot effectively adjust in the high-pressure field.

Method used

A comprehensive control system for imported magnetic levitation blower is adopted, including a volute, volute diffuser and ternary flow impeller assembly. The steering and rotation speed of the ternary flow impeller assembly are adjusted through the axial flow adjustment component, so as to adjust the direction and pressure of the intake air flow, and energy recovery is carried out when the power is cut off.

Benefits of technology

The structure is simplified, friction wear and vibration is reduced, fan efficiency is improved, partial energy recovery is achieved, impact noise is reduced, and the fan is expanded efficient working range.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention belongs to the technical field of magnetic suspension air blower inlet adjusting systems, and discloses a magnetic suspension air blower inlet comprehensive adjusting system and method.The magnetic suspension air blower inlet comprehensive adjusting system comprises a volute, a volute diffuser is communicated with an axial air inlet of the volute, and a three-dimensional flow impeller assembly is rotationally installed in the volute; an axial flow adjusting assembly is arranged in the volute diffuser and located on the air inlet side of the three-dimensional flow impeller assembly, and the axial flow adjusting assembly adjusts the rotating direction and the rotating speed of the three-dimensional flow impeller assembly according to the working state of the three-dimensional flow impeller assembly, so that the three-dimensional flow impeller assembly works within the optimal working range. The efficiency of the fan can be improved, and part of energy can be recycled; a fluid sealing function can be generated in a working state, impact noise can be reduced, and the purpose of noise reduction is achieved.
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Description

Technical Field

[0001] The invention belongs to the technical field of magnetic suspension blower inlet regulating systems, and in particular, relates to a magnetic suspension blower inlet comprehensive regulating system and regulating method. Background Art

[0002] The magnetic levitation blower adopts magnetic levitation support technology, which eliminates mechanical friction and wear and multi-pole speed increaser mechanism. It does not require lubrication and has a speed of up to tens of thousands of rpm. It has the advantages of high power density, small size, light weight, fast response, and strong stability. It can effectively improve the efficiency of the system. Compared with traditional blowers such as water ring blowers and Roots blowers, the energy saving effect of magnetic levitation blowers is improved by 30%-40%. It is an iterative upgraded product that leads the industry to develop in the direction of high efficiency, greenness, and intelligence. It is a high-end green energy-saving equipment that promotes the transformation and upgrading of traditional industries and the conversion of new and old kinetic energy.

[0003] Since the magnetic levitation blower adopts high-speed centrifugal impeller technology, in actual application, the working conditions are complex and changeable, and there is a surge problem in the high-pressure environment. In order to further improve the application performance of the magnetic levitation blower, an inlet guide device is usually used in the actual high-pressure operating environment.

[0004] The Chinese patent with patent application number: CN202110710009.1 discloses an inlet guide vane adjustment device and a blower, wherein the inlet guide vane device includes: a cylinder, a plurality of guide vanes rotatably connected to the cylinder and arranged inside the cylinder, a turntable sleeved on the outer periphery of the cylinder, and a force balancing mechanism connected to the turntable. Corresponding to the position of the guide vanes, the cylinder is circumferentially provided with connecting holes with the same number as the guide vanes, and each connecting hole is penetrated by a rotating rod so that each guide vane contacts the turntable through the corresponding rotating rod during rotation.

[0005] The above-mentioned existing inlet guide vane adjustment device adjusts the direction and pressure of the intake air flow by changing the opening of the guide vane, thereby adjusting the intake pressure and direction of the blower. However, the existing inlet guide vane adjustment device has many overall parts and duplicated structures, can only adjust the surge flow, and has many deficiencies such as friction, wear and vibration during operation, and is prone to damage during operation. At the same time, the inlet guide vane adjustment device is a passive adjustment method, which can only adjust the intake volume by the size of the blade opening angle, and cannot actively control the boost pressure of the air inlet, which limits the adjustment application of the blower in the high-pressure field. Summary of the invention

[0006] The main technical problem to be solved by the present invention is to provide a comprehensive inlet adjustment system and adjustment method for a magnetic levitation blower, which has a simple overall structure, is easy to control, can improve the efficiency of the blower, and can realize partial energy recovery; a fluid sealing function will be generated in the working state, and the impact noise can be reduced, thereby achieving the purpose of noise reduction.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: A magnetic levitation blower inlet integrated regulation system comprises a volute, wherein the axial air inlet of the volute is connected to a volute diffuser, a three-dimensional flow impeller assembly is rotatably mounted in the volute, an axial flow regulation assembly is arranged in the volute diffuser at the air inlet side of the three-dimensional flow impeller assembly, and the axial flow regulation assembly regulates the direction and speed of the three-dimensional flow impeller assembly according to the working state of the three-dimensional flow impeller assembly, so that the three-dimensional flow impeller assembly operates within an optimal working range.

[0008] The following is a further optimization of the above technical solution by the present invention: The three-dimensional flow impeller assembly includes a three-dimensional flow impeller arranged inside the volute, a center hole is opened in the middle of the three-dimensional flow impeller, the three-dimensional flow impeller is installed on the impeller mounting shaft through the center hole, and the impeller mounting shaft is threaded with an impeller fastening nut for fixing the impeller mounting shaft; the impeller mounting shaft is integrally connected to the power output end of the external magnetic levitation motor.

[0009] Further optimization: the axial flow regulating assembly includes a motor mounting base fixedly installed in the volute diffuser and located in front of the three-dimensional flow impeller, an actuator motor is fixedly installed at the middle position of the motor mounting base, and the axial flow regulating impeller is fixedly connected to the rotor shaft of the actuator motor.

[0010] Further optimization: the axis of the executive motor rotor shaft and the axis of the volute diffuser are coaxially arranged.

[0011] Further optimization: A guide cone is coaxially arranged on the front side of the axial flow regulating impeller, and the guide cone is fixedly mounted on the rotor shaft of the actuator motor.

[0012] Further optimization: the electric energy output end of the actuator motor is electrically connected to the magnetic suspension bearing controller on the magnetic suspension motor, and the electric energy output by the actuator motor supplies power to the magnetic suspension bearing through the magnetic suspension bearing controller.

[0013] The present invention also provides a magnetic suspension blower inlet comprehensive adjustment method. Based on the above magnetic suspension blower inlet comprehensive adjustment system, the adjustment method comprises the following steps: Step 1: The rotation of the three-dimensional flow impeller can absorb external air into the volute through the volute diffuser and discharge it through the air outlet after compression. At this time, by adjusting the working state of the actuator motor, the axial flow regulating impeller is driven to rotate forward and reverse and adjust its speed state, thereby adjusting the gas flow range and incident angle of the compression inlet, so that the surge flow line of the magnetic suspension blower moves to the left, thereby obtaining a lower surge flow; Step 2: When the magnetic suspension blower is operated in a low temperature environment, the axial flow regulating assembly works to reduce the air density in the volute diffuser; Step 3: When the magnetic suspension blower is running in a high temperature environment, the axial flow regulating component works to pressurize the air in the volute diffuser, thereby increasing the air density; Step 4: When the magnetic levitation blower is powered off, the axial flow regulating assembly enters the power generation mode, converts the mechanical energy of the airflow into electrical energy, and supplies power to the magnetic levitation bearing of the magnetic levitation motor.

[0014] Further optimization: In step two, the working state of the axial flow regulating component is: the motor is started and drives the axial flow regulating impeller to rotate in the opposite direction at high speed, which is used to reduce the gas flow at the compression inlet, reduce the pressure and air density of the gas at the inlet of the magnetic levitation blower, and prevent the magnetic levitation blower from working in a low efficiency area due to the high inlet gas flow.

[0015] Further optimization: In step three, the working state of the axial flow regulating component is: the motor is started and drives the axial flow regulating impeller to rotate forward at high speed. The axial flow regulating impeller is used to compress the gas at the inlet in advance, increase the pressure of the gas at the inlet of the magnetic levitation blower and the density of the air, and prevent the blower from working in a low efficiency area due to low inlet gas flow.

[0016] Further optimization: In step four, the working state of the axial flow regulation component is: when the magnetic levitation motor is powered off, the rotor of the magnetic levitation motor still rotates at a high speed and drives the three-dimensional flow impeller to rotate for inhaling air. The inlet airflow will drive the axial flow regulation impeller to rotate. The rotation of the axial flow regulation impeller drives the rotor of the actuator motor to rotate, so that the actuator motor works in the power generation mode, converting the mechanical energy of the airflow into electrical energy, and the electrical energy is transmitted to the magnetic levitation bearing of the magnetic levitation motor.

[0017] The present invention adopts the above technical scheme, which has ingenious conception and reasonable structure. By adjusting the executive motor to drive the axial flow regulating impeller to operate at different working speeds, the magnetic levitation blower can be kept running at high efficiency at different working points within a certain range; at the same time, the magnetic levitation blower can obtain a lower surge flow rate; and the magnetic levitation blower can obtain a larger flow and pressure working range, so that the magnetic levitation blower can obtain a larger high-efficiency area.

[0018] In the present invention, when the blower pressure and flow rate are reasonably matched, the inlet airflow adjusts the inlet airflow angle through the axial flow regulating impeller blade angle, thereby reducing the energy loss in the blower compression process; when the magnetic levitation blower is powered off, the rotor of the magnetic levitation motor rotates under high-speed conditions to drive the three-dimensional flow impeller to rotate for inhaling air. At this time, the inlet airflow will drive the axial flow regulating impeller to rotate, and then drive the rotor of the actuator motor to rotate, so that the actuator motor works in the power generation mode, converts the mechanical energy of the airflow into electrical energy, and the electrical energy is transmitted to the magnetic levitation bearing of the magnetic levitation motor, thereby avoiding the blower rotor from falling under high speed conditions, thereby improving safety.

[0019] In the present invention, the axial flow regulating component is arranged in front of the three-dimensional flow impeller. The three-dimensional flow impeller and the axial flow regulating component will produce a fluid sealing function in the working state, isolating the impact noise between the inlet airflow and the three-dimensional flow impeller 7, thereby achieving the purpose of noise reduction.

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 It is a structural schematic diagram of the axial flow regulating impeller in an embodiment of the present invention.

[0022] In the figure: 1-axial flow regulating impeller; 2-executor motor; 3-guide cone; 4-motor mounting seat; 5-volute diffuser; 6-volute; 7-three-dimensional flow impeller; 8-impeller mounting shaft; 9-impeller fastening nut. DETAILED DESCRIPTION

[0023] like Figure 1-2 As shown: a magnetic levitation blower inlet integrated regulation system, including a volute 6, the axial air inlet of the volute 6 is connected to a volute diffuser 5, a three-dimensional flow impeller assembly is rotatably installed in the volute 6, an axial flow regulation assembly is arranged on the air inlet side of the three-dimensional flow impeller assembly in the volute diffuser 5, the axial flow regulation assembly adjusts the direction and speed of the three-dimensional flow impeller assembly according to the working state of the three-dimensional flow impeller assembly, so that the three-dimensional flow impeller assembly works within the optimal working range.

[0024] In this embodiment, the axial air inlet of the volute 6 is arranged at the center position of one side of the volute 6, the volute 6 is provided with a mounting cavity and a compressed air channel, and the volute 6 is provided with an air outlet, which is connected to the compressed air channel.

[0025] In this embodiment, the volute 6 is mounted on an external magnetic levitation motor, and the power output end of the magnetic levitation motor is integrally connected with an impeller mounting shaft 8 , and the impeller mounting shaft 8 extends into the volute 6 .

[0026] The three-dimensional flow impeller assembly includes a three-dimensional flow impeller 7 arranged inside the volute 6, a center hole is opened in the middle of the three-dimensional flow impeller 7, and the three-dimensional flow impeller 7 is installed on the impeller mounting shaft 8 through the center hole. The three-dimensional flow impeller 7 and the impeller mounting shaft 8 are positioned by a shaft shoulder, and the impeller mounting shaft 8 is threadedly connected with an impeller fastening nut 9 for fixing the impeller mounting shaft 8.

[0027] In this design, the three-dimensional flow impeller 7 is installed on the impeller mounting shaft 8 through the center hole and positioned by the shaft shoulder, and then the impeller fastening nut 9 is threadedly connected to the impeller mounting shaft 8. The impeller fastening nut 9 is used to fix the three-dimensional flow impeller 7 on the impeller mounting shaft 8, which is convenient for assembly and installation.

[0028] The impeller mounting shaft 8 is driven to rotate by a magnetic suspension motor, and the rotation of the impeller mounting shaft 8 drives the three-dimensional flow impeller 7 to rotate. At this time, the three-dimensional flow impeller 7 rotates in the volute 6 to compress the air.

[0029] In this embodiment, the volute diffuser 5 is detachably connected to the volute 6, and the volute diffuser 5 is fixedly mounted on the volute 6 by fastening bolts, which is convenient for assembly and installation.

[0030] The axial flow regulating assembly includes a motor mounting base 4 fixedly installed in the volute diffuser 5 and located in front of the three-dimensional flow impeller 7, an actuator motor 2 is fixedly installed at the middle position of the motor mounting base 4, and an axial flow regulating impeller 1 is fixedly connected to the rotor shaft of the actuator motor 2.

[0031] With this design, the actuator motor 2 is fixedly mounted inside the volute diffuser 5 using the motor mounting base 4, which is convenient for assembly and installation.

[0032] In this embodiment, the axis of the rotor shaft of the actuator motor 2 and the axis of the volute diffuser 5 are coaxially arranged.

[0033] The actuator motor 2 is used to drive the axial flow regulating impeller 1 to rotate forward and reverse. The rotation of the axial flow regulating impeller 1 can adjust the gas flow range and incident angle of the compression inlet, thereby making the three-dimensional flow impeller 7 work within the optimal working range, thereby making the magnetic levitation blower obtain a larger flow and pressure working range; and making the blower obtain a larger high-efficiency area.

[0034] In this embodiment, the motor mounting base 4 is fixedly installed in the volute diffuser 5 in a detachable installation manner.

[0035] In this embodiment, bolt fasteners are used to achieve removable fixing at the connection between the motor mounting base 4 and the volute diffuser 5 .

[0036] The overall structure of the motor mounting seat 4 includes an intermediate mounting seat, and a plurality of support arms arranged in an annular shape and at intervals are fixedly connected to the outer surface of the intermediate mounting seat, and the other end of the support arm is fixedly connected to the inner surface of the volute diffuser 5 by bolt fasteners; the actuator motor 2 is fixedly mounted on the intermediate mounting seat.

[0037] A guide cone 3 is coaxially arranged on the front side of the axial flow regulating impeller 1. The guide cone 3 is fixedly mounted on the rotor shaft of the actuator motor 2. The guide cone 3 is used to fix the axial flow regulating impeller 1 and can also guide the air, which is convenient to use.

[0038] It should be noted that the existing movable inlet guide devices all use a clearance fit method to ensure the flexible movement of the guide vanes. Therefore, when impacted by airflow, the guide vanes will vibrate with the mounting structure at high frequency to produce noise. The axial flow regulating assembly proposed in the present invention uses an interference fit method to prevent noise generated by impact and vibration between components.

[0039] The motor mounting base 4 and the volute diffuser 5 are fixedly connected by means of interference fit. In this embodiment, the axial flow regulating component is arranged in front of the three-dimensional flow impeller 7. The three-dimensional flow impeller 7 and the axial flow regulating component will produce a fluid sealing function in the working state, isolating the impact noise between the inlet airflow and the three-dimensional flow impeller 7, thereby achieving the purpose of noise reduction.

[0040] The actuator motor 2 also has an energy recovery function. When the blower pressure and the intake air flow are reasonably matched, the inlet airflow adjusts the inlet airflow angle through the blade angle of the axial flow regulating impeller 1, thereby reducing the energy loss during the blower compression process; at this time, the inlet airflow will drive the axial flow regulating impeller 1 to rotate, and the axial flow regulating impeller 1 drives the rotor of the actuator motor 2 to rotate. At this time, the actuator motor 2 works in the power generation mode, converting the mechanical energy of the airflow into electrical energy, thereby realizing energy recovery.

[0041] In this embodiment, the power output end of the actuator motor 2 is electrically connected to the magnetic bearing controller on the magnetic levitation motor. The power output by the actuator motor 2 powers the magnetic bearing through the magnetic bearing controller, thereby preventing the blower rotor from falling at high speed when the magnetic levitation motor is powered off, thereby improving safety.

[0042] The present invention also provides a magnetic suspension blower inlet comprehensive adjustment method. Based on the above magnetic suspension blower inlet comprehensive adjustment system, the adjustment method comprises the following steps: Step 1: The rotation of the three-dimensional flow impeller 7 can absorb external air through the volute diffuser 5 into the volute 6 and discharge it through the outlet after compression. At this time, by adjusting the working state of the execution motor 2, the axial flow regulating impeller 1 is driven to rotate forward and reverse and its speed state is adjusted, thereby adjusting the gas flow range and incident angle of the compression inlet, and then the surge flow line of the magnetic levitation blower can be moved to the left, thereby obtaining a lower surge flow.

[0043] In step one: by adjusting the working state of the execution motor 2, the axial flow regulating impeller 1 is driven to rotate forward and reverse and its speed state is adjusted, so that the gas flow range and the incident angle of the compression inlet can be adjusted, so that the three-dimensional flow impeller 7 of the magnetic levitation blower can work within the optimal working range, thereby enabling the magnetic levitation blower to obtain a larger flow and pressure working range, and the blower to obtain a larger high-efficiency area.

[0044] In step 1, the forward and reverse rotation and the speed of the axial flow impeller 1 are adjusted based on comprehensive judgment of the blower's operating parameters such as pressure, flow rate and speed.

[0045] In step 1, the axial flow regulating impeller 1 is used to adjust the parameters such as the blower output pressure, flow rate, speed and power before and after the blower is adjusted to determine whether the adjustment is successful or not, and whether the parameters are within a reasonable range of parameter settings.

[0046] Step 2: When the magnetic levitation blower is running in a low-temperature environment, the axial flow regulating component works to reduce the air density in the volute diffuser 5 to prevent the magnetic levitation blower from running in an unfavorable state of low speed and high current.

[0047] In the step 2, the working state of the axial flow regulating component is: the execution motor 2 is started and drives the axial flow regulating impeller 1 to rotate in the opposite direction at high speed, which is used to reduce the gas flow at the compression inlet, thereby reducing the pressure of the gas at the inlet of the magnetic levitation blower, and then reducing the density of the air, preventing the magnetic levitation blower from working in a low efficiency area due to the high inlet gas flow.

[0048] In the step 2, the high-speed reverse rotation of the axial flow regulating impeller 1 means that the direction of rotation of the axial flow regulating impeller 1 is opposite to the direction of rotation of the ternary flow impeller 7 .

[0049] Step 3: When the magnetic levitation blower is running in a high temperature environment, the axial flow regulating component is used to pressurize the air in the volute diffuser 5, thereby increasing the air density and preventing the magnetic levitation blower from running in an unfavorable overspeed state.

[0050] In the step three, the working state of the axial flow regulating component is: the execution motor 2 is started and drives the axial flow regulating impeller 1 to rotate forward at high speed. At this time, the axial flow regulating impeller 1 works to compress the gas at the inlet in advance, thereby increasing the pressure of the gas at the inlet of the magnetic levitation blower, and then increasing the density of the air, preventing the blower from working in a low efficiency area due to the low inlet gas flow.

[0051] Step 4: When the magnetic levitation blower is powered off, the axial flow regulating component enters the power generation mode, converts the mechanical energy of the airflow into electrical energy, and supplies power to the magnetic levitation bearing of the magnetic levitation motor to prevent the blower rotor from falling at high speed.

[0052] In the step four, the working state of the axial flow regulating component is: when the pressure and flow of the magnetic levitation blower are reasonably matched, the inlet airflow adjusts the inlet airflow angle through the blade angle of the axial flow regulating impeller 1, thereby reducing the energy loss in the compression process of the blower; when the magnetic levitation motor is powered off, the rotor of the magnetic levitation motor still rotates under high-speed conditions. At this time, the rotor drives the three-dimensional flow impeller 7 to rotate for inhaling air. At this time, the inlet airflow will drive the axial flow regulating impeller 1 to rotate, and the rotation of the axial flow regulating impeller 1 drives the rotor of the executive motor 2 to rotate, so that the executive motor 2 works in the power generation mode, converts the mechanical energy of the airflow into electrical energy, and the electrical energy is transmitted to the magnetic levitation bearing of the magnetic levitation motor to prevent the blower rotor from falling under high speed conditions.

[0053] For those skilled in the art, according to the teachings of the present invention, without departing from the principles and spirit of the present invention, changes, modifications, substitutions and variations made to the implementation methods are still within the protection scope of the present invention.

Claims

1. A magnetic suspension blower inlet integrated regulation system, comprising a volute (6), wherein the axial air inlet of the volute (6) is connected to a volute diffuser (5), characterized in that: A three-dimensional flow impeller assembly is rotatably mounted in the volute (6), and an axial flow regulating assembly is arranged on the air inlet side of the three-dimensional flow impeller assembly in the volute diffuser (5). The axial flow regulating assembly regulates the direction and speed of the three-dimensional flow impeller assembly according to the working state of the three-dimensional flow impeller assembly, so that the three-dimensional flow impeller assembly operates within an optimal working range.

2. According to claim 1, a magnetic suspension blower inlet integrated adjustment system is characterized in that: The three-dimensional flow impeller assembly comprises a three-dimensional flow impeller (7) arranged inside a volute (6); a center hole is opened in the middle of the three-dimensional flow impeller (7); the three-dimensional flow impeller (7) is mounted on an impeller mounting shaft (8) through the center hole; an impeller fastening nut (9) for fixing the impeller mounting shaft (8) is threadedly connected to the impeller mounting shaft (8); the impeller mounting shaft (8) is integrally connected to the power output end of the external magnetic suspension motor.

3. A magnetic suspension blower inlet integrated adjustment system according to claim 2, characterized in that: The axial flow regulating assembly comprises a motor mounting seat (4) fixedly mounted in a volute diffuser (5) and located in front of a three-dimensional flow impeller (7); an actuator motor (2) is fixedly mounted at a central position of the motor mounting seat (4); and an axial flow regulating impeller (1) is fixedly connected to a rotor shaft of the actuator motor (2).

4. A magnetic suspension blower inlet integrated adjustment system according to claim 3, characterized in that: The axis of the rotor shaft of the actuator motor (2) and the axis of the volute diffuser (5) are coaxially arranged.

5. A magnetic suspension blower inlet integrated adjustment system according to claim 4, characterized in that: A guide cone (3) is coaxially arranged on the front side of the axial flow regulating impeller (1), and the guide cone (3) is fixedly mounted on the rotor shaft of the actuator motor (2).

6. A magnetic suspension blower inlet integrated adjustment system according to claim 5, characterized in that: The electric energy output end of the actuator motor (2) is electrically connected to a magnetic suspension bearing controller on the magnetic suspension motor, and the electric energy output by the actuator motor (2) supplies power to the magnetic suspension bearing through the magnetic suspension bearing controller.

7. A magnetic suspension blower inlet comprehensive regulation method, based on a magnetic suspension blower inlet comprehensive regulation system according to claim 6, characterized in that: The adjustment method includes the following steps: Step 1: The three-dimensional flow impeller (7) rotates to absorb external air through the volute diffuser (5) into the volute (6) and discharge it through the air outlet after compression. At this time, by adjusting the working state of the execution motor (2), the axial flow regulating impeller (1) is driven to rotate forward and reverse and adjust its speed state, thereby adjusting the gas flow range and incident angle of the compression inlet, so that the surge flow line of the magnetic suspension blower moves to the left, thereby obtaining a lower surge flow; Step 2: When the magnetic suspension blower is operated in a low temperature environment, the axial flow regulating component works to reduce the air density in the volute diffuser (5); Step 3: When the magnetic suspension blower is running in a high temperature environment, the axial flow regulating component works to pressurize the air in the volute diffuser (5), thereby increasing the air density; Step 4: When the magnetic levitation blower is powered off, the axial flow regulating assembly enters the power generation mode, converts the mechanical energy of the airflow into electrical energy, and supplies power to the magnetic levitation bearing of the magnetic levitation motor.

8. A magnetic suspension blower inlet comprehensive adjustment method according to claim 7, characterized in that: In step 2, the working state of the axial flow regulating component is: the execution motor (2) is started and drives the axial flow regulating impeller (1) to rotate in the opposite direction at high speed, so as to reduce the gas flow rate at the compression inlet, reduce the pressure and air density of the gas at the inlet of the magnetic levitation blower, and prevent the magnetic levitation blower from operating in a low efficiency area due to the high inlet gas flow rate.

9. A magnetic suspension blower inlet comprehensive adjustment method according to claim 8, characterized in that: In step 3, the working state of the axial flow regulating component is: the execution motor (2) is started and drives the axial flow regulating impeller (1) to rotate forward at high speed. The axial flow regulating impeller (1) works to compress the gas at the inlet in advance, thereby increasing the pressure of the gas at the inlet of the magnetic levitation blower and the density of the air, and preventing the blower from working in a low efficiency area due to a low inlet gas flow rate.

10. A magnetic suspension blower inlet comprehensive adjustment method according to claim 9, characterized in that: In step 4, the working state of the axial flow regulating component is: when the magnetic levitation motor is powered off, the rotor of the magnetic levitation motor still rotates at a high speed and drives the three-dimensional flow impeller (7) to rotate for inhaling air, and the inlet airflow drives the axial flow regulating impeller (1) to rotate. The rotation of the axial flow regulating impeller (1) drives the rotor of the actuator motor (2) to rotate, so that the actuator motor (2) works in the power generation mode, converts the mechanical energy of the airflow into electrical energy, and the electrical energy is transmitted to the magnetic levitation bearing of the magnetic levitation motor.

Citation Information

Patent Citations

  • An imported guide vane adjustment device and blower

    CN113357193B

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