Electrically-assisted turbocharger with self-cleaning function

Abstract

The invention provides an electric auxiliary turbocharger with a self-cleaning function, and relates to the technical field of electric auxiliary turbochargers, the electric auxiliary turbocharger comprises a cleaner, a gas compressor and a turbine which are connected in sequence, and a turbine in the turbine, a gas compressor blade in the gas compressor and an auxiliary motor are connected through a rotating shaft. The cleaner comprises a cleaner shell, a cleaning disc and a cleaning motor, the cleaning motor drives the cleaning disc to rotate through a transmission structure, and the transmission structure comprises a first vertical bevel gear, two horizontal bevel gears and a second vertical bevel gear, the first vertical bevel gear and the second vertical bevel gear are meshed with the two horizontal bevel gears which are oppositely arranged up and down, an auxiliary motor is arranged outside the gas compressor, the auxiliary motor is far away from a turbine, and therefore the heat dissipation pressure is small, stable operation of the motor is facilitated, and the service life of the motor is prolonged; in addition, the auxiliary motor is arranged outside the gas compressor, and the performance of the gas compressor cannot be directly affected.

Description

Technical Field

[0001] The present invention belongs to the technical field of electrically assisted turbochargers, and more specifically, particularly relates to an electrically assisted turbocharger with a self-cleaning function. Background Art

[0002] A turbocharger is an air boosting device that uses the exhaust gas from the engine to increase the density of the air entering the engine cylinder. It mainly consists of two parts, a turbine and a compressor, to improve engine performance. The turbine is driven to rotate by the exhaust gas from the engine and is connected to the compressor through a shaft, causing the compressor to rotate as well, thereby compressing air and sending it into the engine. Compared to traditional turbochargers, in addition to the exhaust gas drive, an electric-assisted turbocharger also adds an electric motor / generator (MGU) to assist in driving the compressor impeller. At low speeds, the electronic control unit controls the motor to start and drive the compressor to work, improving the engine's acceleration and low-speed torque issues.

[0003] However, the existing electrically assisted turbochargers mainly have the following problems: 1. The auxiliary motor in the existing electric-assisted turbocharger is arranged inside the turbocharger. Since the auxiliary motor is close to the turbine, the operating temperature of the auxiliary motor is high and the magnetic field has a greater impact. In order to prevent the auxiliary motor from being damaged at high temperatures, a complex cooling system needs to be set up to cool the auxiliary motor, which makes the overall structure complex and increases the manufacturing cost. In addition, since the auxiliary motor is arranged inside the turbocharger, it has an impact on the internal structure of the turbocharger, affecting the performance of the compressor and destroying the original efficiency and characteristics of the compressor.

[0004] 2. Turbochargers are susceptible to pollutants such as oil and dust in harsh working environments. These pollutants not only affect the normal operation of the turbine and compressor, but may also cause corrosion and damage to the precision parts inside, shortening the service life of the turbocharger. To solve the above technical problems, the existing technology requires the blades to be removed and then manually cleaned, which is inconvenient and labor-intensive. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides an electrically assisted turbocharger with a self-cleaning function to solve the above problems.

[0006] An electrically assisted turbocharger with a self-cleaning function comprises a cleaner, a compressor, and a turbine connected in sequence, wherein a turbine in the turbine, a compressor blade in the compressor, and an auxiliary motor are connected via a rotating shaft; The cleaner includes a cleaner housing, a cleaning disc, and a cleaning motor, and the cleaning motor drives the cleaning disc to rotate through a transmission structure; The transmission structure includes a first vertical bevel gear, two horizontal bevel gears arranged opposite to each other up and down, and a second vertical bevel gear, the two horizontal bevel gears are respectively rotatably connected to the fixed shaft, and the first vertical bevel gear and the second vertical bevel gear are meshed with the two horizontal bevel gears arranged opposite to each other up and down; the output shaft of the cleaning motor is fixedly connected to the first vertical bevel gear, and the second vertical bevel gear is fixedly connected to the cleaning disc through a connecting shaft, and a cleaning liquid tank is arranged between the second vertical bevel gear and the cleaning disc, the connecting shaft passes through the cleaning liquid tank, and the connecting shaft is rotatably connected to the left and right sides of the cleaning liquid tank through a sealed bearing, and the end of the cleaning disc is connected to the cleaning liquid tank and can rotate relative to the cleaning liquid tank; The auxiliary motor is fixedly arranged in the cleaner housing, and the rotating shaft passes through the cleaning motor, the first vertical bevel gear, the second vertical bevel gear, the connecting shaft, the cleaning disc and is connected with the compressor blade in sequence.

[0007] By arranging the auxiliary motor outside the compressor, the auxiliary motor is far away from the turbine, so the heat dissipation pressure is smaller, which is beneficial to the stable operation and life extension of the motor; in addition, arranging the auxiliary motor outside the compressor will not directly affect the performance of the compressor, and the original efficiency and characteristics of the compressor are maintained.

[0008] During the cleaning process, the cleaning disc rotates and the compressor blades are stationary. The sprayed cleaning liquid moves in a curve under the action of gravity and centrifugal force. The rotating spraying cleaning liquid can clean the compressor blades from multiple angles. The trajectory of the rotating spraying cleaning liquid can cover more areas of the compressor blades, effectively solving the problem of cleaning dead corners and achieving all-round cleaning of the compressor blades.

[0009] Preferably, the cleaning motor is a hollow motor; preferably, the auxiliary motor is a permanent magnet motor; Preferably, the cleaner housing is detachably connected to the compressor housing; Preferably, a cleaning liquid inlet is provided on the cleaning device housing, and the cleaning liquid inlet is connected to the cleaning liquid tank through a guide pipe; preferably, a cleaning liquid control valve is provided on the guide pipe; Preferably, the cleaning liquid inlet is connected to the liquid inlet pipe, and the liquid inlet pipe is connected to the pump, and the cleaning liquid is pumped into the cleaning liquid tank by the pump, and appropriate flow pressure is given to the cleaning liquid so that the cleaning liquid is sprayed out of the cleaning disc under the action of pressure.

[0010] Preferably, a movable damper fan is provided in the cleaner housing, and the movable damper fan is provided between the cleaning disk and the compressor blades. When the electrically assisted turbine is working, the movable fan door is closed to prevent the cleaner from affecting the normal operation of the electrically assisted turbine. When cleaning, the movable fan door is opened, and the cleaning motor drives the cleaning disk to clean the compressor blades.

[0011] Preferably, a spray pipe is provided on the cleaning disc.

[0012] Preferably, it is provided with a control device, which is electrically connected to the auxiliary motor and the cleaning motor. Preferably, the control device is also electrically connected to the cleaning liquid control valve, the movable damper fan, and the pump to control the cleaning device.

[0013] Preferably, a sewage outlet is provided at the bottom of the compressor casing, through which the sewage after cleaning is discharged.

[0014] A method for using an electrically assisted turbocharger with a self-cleaning function, the method comprising the following steps: When the electric auxiliary turbine is working, the control device controls the auxiliary motor to work, so that the auxiliary motor drives the compressor blades to rotate. When cleaning is required, the control device controls the cleaning motor to work, so that the cleaning motor drives the cleaning disk to rotate, so as to clean the compressor blades. Preferably, when the electric-assisted turbine is working, the control device controls the movable damper fan to close; when cleaning is required, the control device controls the movable damper fan to open.

[0015] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, by arranging the auxiliary motor outside the compressor, the auxiliary motor is far away from the turbine, so the heat dissipation pressure is small, which is beneficial to the stable operation and life extension of the motor; in addition, arranging the auxiliary motor outside the compressor will not directly affect the performance of the compressor, and the original efficiency and characteristics of the compressor are maintained.

[0016] In the present invention, the self-cleaning of the compressor blades in the electrically assisted turbocharger is achieved through the electrically assisted turbocharger with a self-cleaning function, thereby improving the cleaning efficiency, saving labor costs and reducing labor intensity.

[0017] In the present invention, during the cleaning process, the cleaning disk is rotated and the compressor blades are stationary. The sprayed cleaning liquid moves in a curve under the action of gravity and centrifugal force. The rotating sprayed cleaning liquid can clean the compressor blades from multiple angles. The trajectory of the rotating sprayed cleaning liquid can cover more areas of the compressor blades, effectively solving the problem of cleaning dead corners and achieving all-round cleaning of the compressor blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the auxiliary motor structure of the present invention; Figure 2 It is an internal view of the cleaning device structure of the present invention; Figure 3 It is a schematic diagram of the structure of the horizontal bevel gear of the present invention; Figure 4 It is a schematic diagram of the structure of the cleaning disk of the present invention; Figure 5Schematic diagram of the cleaning liquid inlet in the present invention in a closed state; Figure 6 It is a schematic diagram of the cleaning liquid inlet opening state of the present invention.

[0019] In the figure, the correspondence between the component names and the figure numbers is: 1. Auxiliary motor; 2. Cleaner housing; 3. Air inlet; 4. Air outlet; 5. Cleaning liquid inlet; 6. Compressor housing; 7. Cleaner shaft; 8. Guide rod; 9. Cleaning disc; 10. Compressor blade; 11. Sewage outlet; 12. Switcher; 13. Shaft; 14. Movable sealing door leaf; 15. Cleaning motor; 16. First vertical bevel gear; 17. Horizontal bevel gear; 18. Fixed shaft; 19. Second vertical bevel gear; 20. Connecting shaft; 21. Sealed bearing; 22. Cleaning liquid control valve; 23. Cleaning liquid tank; 24. Injection pipe. DETAILED DESCRIPTION

[0020] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0021] See also Figure 1-Figure 6 The present invention provides an electrically assisted turbocharger with a self-cleaning function, characterized in that it comprises a cleaner, a compressor, and a turbine connected in sequence, wherein the turbine in the turbine, the compressor blades 10 in the compressor, and the auxiliary motor 1 are connected via a rotating shaft 13; The cleaner includes a cleaner housing 2, a cleaning disc 9, and a cleaning motor 15. The cleaning motor 15 drives the cleaning disc 9 to rotate through a transmission structure. The transmission structure includes a first vertical bevel gear 16, two horizontal bevel gears 17 arranged opposite to each other up and down, and a second vertical bevel gear 19. The two horizontal bevel gears 17 are rotatably connected to the fixed shaft 18 respectively, and the first vertical bevel gear 16 and the second vertical bevel gear 19 are meshed with the two horizontal bevel gears 17 arranged opposite to each other up and down; the output shaft of the cleaning motor 15 is fixedly connected to the first vertical bevel gear 16, and the second vertical bevel gear 19 is fixedly connected to the cleaning disc 9 through a connecting shaft 20. A cleaning liquid tank 23 is provided between the second vertical bevel gear 19 and the cleaning disc 9. The connecting shaft 20 passes through the cleaning liquid tank 23, and the connecting shaft 20 is rotatably connected to the left and right sides of the cleaning liquid tank 23 through a sealed bearing 21. The end of the cleaning disc 9 is connected to the cleaning liquid tank 23 and can rotate relative to the cleaning liquid tank 23. The auxiliary motor 1 is fixedly arranged in the cleaner housing 2 , and the rotating shaft 13 passes through the cleaning motor 15 , the first vertical bevel gear 16 , the second vertical bevel gear 19 , the connecting shaft 20 , the cleaning disc 9 and is connected to the compressor blade 10 in sequence.

[0022] By arranging the auxiliary motor 1 outside the compressor, the auxiliary motor 1 is far away from the turbine, so the heat dissipation pressure is small, which is beneficial to the stable operation and life extension of the motor; in addition, arranging the auxiliary motor outside the compressor will not directly affect the performance of the compressor, and the original efficiency and characteristics of the compressor are maintained.

[0023] During the cleaning process, the cleaning disc 9 is rotated and the compressor blades are stationary. The sprayed cleaning liquid moves in a curve under the action of gravity and centrifugal force. The rotating spraying cleaning liquid can clean the compressor blades from multiple angles. The trajectory of the rotating spraying cleaning liquid can cover more areas of the compressor blades, effectively solving the problem of cleaning dead corners and achieving all-round cleaning of the compressor blades 10.

[0024] The cleaning motor 15 is a hollow motor; the auxiliary motor 1 is a permanent magnet motor; The cleaner housing 2 is detachably connected to the compressor housing 6; The cleaning device housing 2 is provided with a cleaning liquid inlet 5, which is connected to a cleaning liquid tank 23 via a flow guide pipe 8; a cleaning liquid control valve 22 is provided on the flow guide pipe 8; The cleaning liquid inlet 5 is connected to a liquid inlet pipe, which is connected to a pump. The cleaning liquid is pumped into the cleaning liquid tank by the pump, and appropriate flow pressure is given to the cleaning liquid so that the cleaning liquid is sprayed out of the cleaning disk 9 under the action of pressure.

[0025] A movable damper fan 14 is arranged in the cleaner housing 2, and the movable damper fan 14 is arranged between the cleaning disk 9 and the compressor blades 10. When the electric-assisted turbine is working, the movable fan door 14 is closed to prevent the cleaner from affecting the normal operation of the electric-assisted turbine. When cleaning, the movable fan door 14 is opened, and the cleaning motor 15 drives the cleaning disk 9 to clean the compressor blades 10.

[0026] A spray pipe 14 is provided on the cleaning disc 9 .

[0027] It is provided with a control device, which is electrically connected to the auxiliary motor 1 and the cleaning motor 15. The control device is also electrically connected to the cleaning liquid control valve 22, the movable damper fan 14 and the pump for controlling them.

[0028] A sewage outlet 11 is provided at the bottom of the compressor casing 6, through which the sewage after cleaning is discharged.

[0029] A method for using an electrically assisted turbocharger with a self-cleaning function, the method comprising the following steps: When the electric auxiliary turbine is working, the control device controls the auxiliary motor 1 to work, so that the auxiliary motor 1 drives the compressor blade 10 to rotate. When cleaning is required, the control device controls the cleaning motor 15 to work, so that the cleaning motor 15 drives the cleaning disk 9 to rotate, so as to clean the compressor blade 10. When the electric auxiliary turbine is working, the control device controls the movable damper fan 14 to be closed; when cleaning is required, the control device controls the movable damper fan 14 to be opened.

[0030] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. An electrically assisted turbocharger with a self-cleaning function, comprising a cleaner, a compressor, and a turbine connected in sequence, characterized in that: The turbine comprises: a turbine, a compressor, compressor blades (10), an auxiliary motor (1) and a rotating shaft (13), wherein the turbine, the compressor blades (10) in the compressor and the auxiliary motor (1) are connected via the rotating shaft (13); The cleaner comprises a cleaner housing (2), a cleaning disc (9), and a cleaning motor (15); a transmission structure is provided between the cleaning motor (15) and the cleaning disc (9), and the transmission structure drives the cleaning disc (9) to rotate; The transmission structure comprises a first vertical bevel gear (16), two horizontal bevel gears (17) arranged opposite to each other in an upper and lower direction, and a second vertical bevel gear (19); the two horizontal bevel gears (17) are rotatably connected to a fixed shaft (18); the first vertical bevel gear (16), the second vertical bevel gear (19) and the two horizontal bevel gears (17) are meshed; The output shaft of the cleaning motor (15) is fixedly connected to the first vertical bevel gear (16); a connecting shaft (20) is fixedly connected between the second vertical bevel gear (19) and the cleaning disc (9); a cleaning liquid tank (23) is provided between the second vertical bevel gear (19) and the cleaning disc (9); the connecting shaft (20) passes through the cleaning liquid tank (23); and sealed bearings (21) are rotatably connected between the connecting shaft (20) and the cleaning liquid tank (23) on both sides; an end of the cleaning disc (9) is connected to the cleaning liquid tank (23) and can rotate relative to the cleaning liquid tank (23).

2. An electrically assisted turbocharger with a self-cleaning function as claimed in claim 1, characterized in that: The auxiliary motor (1) is fixedly arranged in the cleaner housing (2), and the rotating shaft (13) passes through the cleaning motor (15), the first vertical bevel gear (16), the second vertical bevel gear (19), the connecting shaft (20), the cleaning disc (9) and is connected to the compressor blade (10) in sequence.

3. An electrically assisted turbocharger with a self-cleaning function as claimed in claim 2, characterized in that: The cleaning motor (15) is a hollow motor, and the auxiliary motor (1) is a permanent magnet motor.

4. An electrically assisted turbocharger with a self-cleaning function as claimed in claim 3, characterized in that: The cleaner housing (2) is detachably connected to the compressor housing (6).

5. An electrically assisted turbocharger with a self-cleaning function as claimed in claim 4, characterized in that: The cleaning device housing (2) is provided with a cleaning liquid inlet (5), a flow guide pipe (8) is connected between the cleaning liquid inlet (5) and the cleaning liquid tank (23), and a cleaning liquid control valve (22) is provided on the flow guide pipe (8).

6. An electrically assisted turbocharger with a self-cleaning function as claimed in claim 5, characterized in that: The cleaning liquid inlet (5) is connected to a liquid inlet pipe, and the liquid inlet pipe is connected to a pump.

7. An electrically assisted turbocharger with a self-cleaning function as claimed in claim 6, characterized in that: A movable air door fan (14) is arranged in the cleaner housing (2), and the movable air door fan (14) is arranged between the cleaning disc (9) and the compressor blade (10).

8. An electrically assisted turbocharger with a self-cleaning function as claimed in claim 7, characterized in that: The cleaning disc (9) is provided with a spray pipe (14), and the cleaner is provided with a control device, which is electrically connected to the auxiliary motor (1) and the cleaning motor (15).

9. An electrically assisted turbocharger with a self-cleaning function as claimed in claim 8, characterized in that: The control device is also electrically connected to the cleaning liquid control valve (22), the movable damper fan (14), and the pump for controlling them.

10. An electrically assisted turbocharger with a self-cleaning function as claimed in claim 9, characterized in that: A sewage outlet (11) is provided at the bottom of the compressor casing (6).

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