CN116733646A - Brushless motor fuel pump with built-in controller - Google Patents
Brushless motor fuel pump with built-in controller Download PDFInfo
- Publication number
- CN116733646A CN116733646A CN202310944299.5A CN202310944299A CN116733646A CN 116733646 A CN116733646 A CN 116733646A CN 202310944299 A CN202310944299 A CN 202310944299A CN 116733646 A CN116733646 A CN 116733646A
- Authority
- CN
- China
- Prior art keywords
- controller
- brushless motor
- fuel pump
- oil outlet
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 41
- 230000017525 heat dissipation Effects 0.000 claims abstract description 38
- 238000007789 sealing Methods 0.000 claims abstract description 38
- 239000002184 metal Substances 0.000 claims abstract description 23
- 229910052751 metal Inorganic materials 0.000 claims abstract description 23
- 238000009434 installation Methods 0.000 claims abstract description 10
- 230000008878 coupling Effects 0.000 claims description 10
- 238000010168 coupling process Methods 0.000 claims description 10
- 238000005859 coupling reaction Methods 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000001746 injection moulding Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 3
- 239000000696 magnetic material Substances 0.000 claims description 3
- 238000005253 cladding Methods 0.000 claims 2
- 238000010030 laminating Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/04—Feeding by means of driven pumps
- F02M37/08—Feeding by means of driven pumps electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/08—Cooling; Heating; Preventing freezing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The brushless motor fuel pump with the built-in controller comprises a control unit, a brushless motor and a fuel pump which are sequentially connected, wherein the control unit comprises an oil outlet cover, a controller, a heat conducting pad, a mounting bracket and a metal heat radiating plate; the installation support is fixedly arranged at the upper end of the brushless motor, a circulation cavity for oil to flow out is arranged between the installation support and the upper end of the brushless motor, the circulation cavity, the brushless motor and the fuel pump are sequentially communicated, the oil outlet cover is fixedly connected with the upper end of the installation support, and the oil outlet cover is provided with an oil outlet communicated with the circulation cavity; the mounting support is in sealing connection with the oil outlet cover to form a sealing cavity for mounting the controller, the heat conducting pad and the metal heat dissipation plate are sequentially connected from top to bottom, the lower part of the metal heat dissipation plate is in sealing connection with the mounting hole formed in the mounting support, and the metal heat dissipation plate penetrates through the mounting hole and is exposed in the circulation cavity.
Description
Technical Field
The application relates to the field of brushless motor fuel pumps, in particular to a brushless motor fuel pump with a built-in controller.
Background
In general, an electric fuel pump employs a mode in which a controller and a brushless motor are separated from each other, and there is a mode in which the controller and the brushless motor are combined with each other in the related art. The utility model discloses a brushless motor fuel pump with built-in controller as disclosed in application number 2007100713329, it specifically includes out oil end cover, electrical apparatus socket, shell, pump part, brushless motor and controller, and pump part includes the pump body, pump impeller and pump cover, and brushless motor includes stator and winding part, rotor part, hall sensor, and rotor part's axle passes the pump body and pump impeller fixed connection, and the controller is set up to the smaller layered structure that can arrange in the shell of overall dimension. There are two problems in practical settings: firstly, the controller is of a built-in design, so that the technical problem that the controller is difficult to dissipate heat exists; the connection relation between the second controller and the brushless motor is relatively close, so that liquid in the brushless motor easily permeates into a cavity in the controller to cause the controller to fail.
Disclosure of Invention
In order to solve the problems, the application provides a brushless motor fuel pump with a built-in controller, which comprises:
the brushless motor fuel pump with the built-in controller comprises a control unit, a brushless motor and a fuel pump which are sequentially connected, wherein the control unit comprises an oil outlet cover, a controller, a heat conducting pad, a mounting bracket and a metal heat radiating plate;
the installation support is fixedly arranged at the upper end of the brushless motor, a circulation cavity for oil to flow out is arranged between the installation support and the upper end of the brushless motor, the circulation cavity, the brushless motor and the fuel pump are sequentially communicated, the oil outlet cover is fixedly connected with the upper end of the installation support, and the oil outlet cover is provided with an oil outlet communicated with the circulation cavity;
the mounting support is in sealing connection with the oil outlet cover to form a sealing cavity for mounting the controller, the heat conducting pad and the metal heat dissipation plate are sequentially connected from top to bottom, the lower part of the metal heat dissipation plate is in sealing connection with the mounting hole formed in the mounting support, and the metal heat dissipation plate penetrates through the mounting hole and is exposed in the circulation cavity.
Preferably, the mounting bracket and the oil outlet cover are mutually sealed to form a box-type sealing structure, and a sealing ring is arranged at the joint of the mounting bracket and the oil outlet cover. The mounting bracket and the oil outlet cover are mutually sealed, and the corresponding sealing ring is added, so that the sealing effect of the sealing cavity is improved. The power components arranged on the controller are arranged on the surface close to the heat conducting pad, and the power components are contacted with the heat conducting pad.
Preferably, the metal heat dissipation plate comprises a main plate connected with the heat conduction pad and a heat dissipation part protruding downwards relative to the main plate, the heat dissipation part is in sealing connection with the mounting hole, the lower end of the heat dissipation part is exposed in the circulation cavity, and a heat dissipation groove corresponding to the circulation cavity is arranged in the heat dissipation part. The arrangement of the heat dissipation grooves relative to the concave increases the corresponding contact area relative to the planar design, and improves the heat dissipation efficiency.
Preferably, the upper end of the oil outlet cover is provided with an electric connection groove and an oil outlet nozzle, an electrode electrically connected with the controller is arranged in the electric connection groove, the oil outlet nozzle is communicated with an oil outlet, the oil outlet is arranged on one side of the oil outlet cover, the oil outlet is of a flat axial extending structure, and the oil outlet covers one side of the sealing cavity. The oil outlet is of a flat structure and is coated on one side of the sealing cavity, so that the led oil liquid and the sealing cavity can obtain the largest contact surface, and the heat dissipation function of the sealing cavity is further realized.
Preferably, the brushless motor comprises a motor housing, a stator and a rotor, wherein the motor housing is fixedly connected with the control unit, a motor cavity for accommodating the stator and the rotor is arranged in the motor housing, the stator is electrically connected with the controller, and the rotor is in transmission connection with the fuel pump.
Preferably, the rotor comprises a rotating shaft and a rotating magnet, the rotating magnet is made of plastic magnetic materials through injection molding and is provided with a polygonal clamping groove at one end, and the fuel pump comprises a coupling and a pump assembly which are in transmission connection with each other, and the coupling is in transmission connection with the polygonal clamping groove.
Preferably, the rotor further comprises an iron core, the iron core is fixedly sleeved with the rotating shaft, and the polygonal clamping groove is of a hexagonal structure. According to the characteristics that plastic magnetic injection molding can form various structures, one end of the rotor magnet is made into a concave hexagonal structure matched with a coupling for transmitting torque, so that the rotor magnet not only rotates, but also has the function of transmitting torque through the concave hexagonal structure, and the brushless pump structure is simpler and more compact.
Preferably, the fuel pump further comprises a filter screen assembly for filtering fuel.
Preferably, the brushless motor further comprises a motor support, the motor support is installed below the installation support in a clamping mode, the circulation cavity is arranged between the motor support and the installation support, and the motor support is provided with one or more circulation ports for communicating the circulation cavity with the motor cavity.
Preferably, the surface of the oil outlet cover is provided with a circumferential extending annular groove, the lower part of the annular groove is provided with an annular inclined plane, the upper part of the motor shell is coated with the lower part of the oil outlet cover, the mounting bracket and the motor bracket, the upper end of the motor shell is provided with an annular wrapping edge which is bent obliquely inwards, and the annular wrapping edge and the annular groove form clamping fit. The upper part of the motor shell can effectively prevent the mounting bracket and the motor bracket from being exposed outside, and prevent external pollution from contacting the controller through a gap between the mounting bracket and the motor bracket.
The beneficial effects are that: according to the application, the mounting bracket is in sealing connection with the oil outlet cover to form the sealing cavity for mounting the controller, so that the sealing effect of the controller is improved, and the oil is prevented from penetrating and damaging. The heat generated by the components on the controller is taken away by the flowing fuel through the heat conducting pad and the metal heat radiating plate, so that the corresponding heat radiating function is realized.
Drawings
Fig. 1 is a schematic cross-sectional view of an embodiment.
Fig. 2 is a cross-sectional perspective view of an embodiment.
Fig. 3 is a schematic top view of an embodiment.
Fig. 4 is a sectional structural view of the rotary magnet.
Reference numerals: 1. an oil outlet cover; 2. a controller; 3. a thermal pad; 4. a seal ring; 5. a mounting bracket; 6. a metal heat dissipation plate; 61. a main board; 62. a heat dissipation part; 63. a heat sink; 7. a motor bracket; 8. a housing; 81. a motor cavity; 82. annular edge wrapping; 9. a stator; 10. a rotor; 101. a rotating shaft; 102. an iron core; 103. a rotating magnet; 11. a pump assembly; 12. a coupling; 13. a screen assembly; 14. a flow-through chamber; 15. an oil outlet; 16. sealing the cavity; 17. an electrical connection slot; 18. an electrode; 19. an oil outlet nozzle; 20. polygonal clamping grooves; 21. a flow port; 22. an annular groove; 23. an annular inclined plane.
Detailed Description
The application is further described below with reference to figures 1-4 and examples.
Examples: as shown in fig. 1, a brushless motor fuel pump with a built-in controller 2 includes a control unit, a brushless motor and a fuel pump connected in sequence.
The control unit comprises an oil outlet cover 1, a controller 2, a heat conducting pad 3, a mounting bracket 5 and a metal heat radiating plate 6. The controller 2 adopted by the application is a hall-free controller 2. The mounting bracket 5 is fixedly arranged at the upper end of the brushless motor, a circulation cavity 14 for oil outflow is arranged between the mounting bracket 5 and the upper end of the brushless motor, and the circulation cavity 14, the brushless motor and the fuel pump are sequentially communicated. The oil outlet cover 1 is fixedly connected with the upper end of the mounting bracket 5, and the oil outlet cover 1 is provided with an oil outlet 15 communicated with the circulation cavity 14. The oil outlet 15 is arranged on one side of the oil outlet cover 1, the oil outlet 15 is of a flat axial extending structure, and the oil outlet 15 covers one side of the sealing cavity 16. The oil outlet 15 is of a flat structure and is coated on one side of the sealing cavity 16, so that the maximum contact surface between the guided oil and the sealing cavity 16 is obtained, and the heat dissipation function of the sealing cavity 16 is further realized. As shown in fig. 3, an electric connection groove 17 and an oil outlet nozzle 19 are arranged at the upper end of the oil outlet cover 1, an electrode 18 electrically connected with the controller 2 is arranged in the electric connection groove 17, and the oil outlet nozzle 19 is communicated with the oil outlet 15.
The mounting bracket 5 is in sealing connection with the oil outlet cover 1 to form a sealing cavity 16 for mounting the controller 2, the heat conducting pad 3 and the metal heat dissipation plate 6 are sequentially connected from top to bottom, the lower part of the metal heat dissipation plate 6 is in sealing connection with the mounting bracket 5 in a mounting hole, and the metal heat dissipation plate 6 penetrates through the mounting hole and is exposed in the circulation cavity 14. The mounting bracket 5 and the oil outlet cover 1 are mutually sealed to form a box type sealing structure, and the power components on the controller 2 are all arranged on the surface close to the heat conducting pad 3 and are contacted with the heat conducting pad 3, so that heat generated by the power components can be taken away by fuel flowing through the heat conducting pad 3 and the metal heat radiating plate 6, and the components on the controller 2 are protected. The joint of the mounting bracket 5 and the oil outlet cover 1 is provided with a sealing ring 4. The mounting bracket 5 and the oil outlet cover 1 are mutually sealed, and the corresponding sealing ring 4 is added, so that the sealing effect of the sealing cavity 16 is improved.
The metal heat dissipation plate 6 comprises a main plate 61 connected with the heat conduction pad 3 and a heat dissipation part 62 protruding downwards relative to the main plate 61, the heat dissipation part 62 is in sealing connection with the mounting hole, the lower end of the heat dissipation part 62 is exposed in the circulation cavity 14, and a heat dissipation groove 63 corresponding to the circulation cavity 14 is arranged in the heat dissipation part 62. The arrangement of the heat dissipation grooves 63 relative to the concave increases the corresponding contact area relative to the planar design, and improves the heat dissipation efficiency.
The brushless motor comprises a motor housing 8, a stator 9, a rotor 10 and a motor bracket 7. The motor housing 8 is fixedly connected with the control unit, a motor cavity 81 for accommodating a stator 9 and a rotor 10 is arranged in the motor housing 8, the stator 9 is electrically connected with the controller 2, and the rotor 10 is in transmission connection with the fuel pump. The motor support 7 is installed below the mounting support 5 in a clamping mode, the circulation cavity 14 is arranged between the motor support 7 and the mounting support 5, and the motor support 7 is provided with one or more circulation ports 21 which are used for communicating the circulation cavity 14 with the motor cavity 81.
The rotor 10 comprises a rotating shaft 101, an iron core 102 and a rotating magnet 103, wherein the rotating magnet 103 is formed on the rotating shaft 101 by injection molding of plastic magnetic materials, and a polygonal clamping groove 20 is formed at one end of the rotating magnet 103. The fuel pump includes a filter screen assembly 13, a coupling 12 and a pump assembly 11 in driving connection with each other. The screen assembly 13 is used for filtering fuel. The coupling 12 is in driving connection with the polygonal clamping groove 20. As shown in fig. 4, the core 102 is fixedly sleeved with the rotating shaft 101, and the polygonal clamping groove 20 has a hexagonal structure. According to the characteristics that plastic magnetic injection molding can form various structures, one end of the magnet of the rotor 10 is provided with a concave hexagonal structure matched with the coupling 12 for transmitting torque, so that the magnet of the rotor 10 not only rotates, but also has the function of transmitting torque through the concave hexagonal structure, and the brushless pump structure is simpler and more compact.
The outer surface of the oil outlet cover 1 is provided with a circumferential extending annular groove 22, the lower part of the annular groove 22 is provided with an annular inclined plane 23, the upper part of the motor housing 8 is coated with the lower part of the oil outlet cover 1, the mounting bracket 5 and the motor bracket 7, the upper end of the motor housing 8 is provided with an annular wrapping edge 82 which is bent obliquely inwards, and the annular wrapping edge 82 and the annular groove 22 form clamping fit. The upper portion of the motor housing 8 can effectively prevent the mounting bracket 5 and the motor bracket 7 from being exposed outside, and prevent external pollution from contacting the controller 2 through a gap between the mounting bracket 5 and the motor bracket 7.
Operation principle: the positive electrode 18 and the negative electrode 18 are externally connected with direct current, are converted into alternating current through the Hall-free controller 2, generate an alternating magnetic field through the stator 9, enable the rotor 10 to rotate, drive the pump assembly 11 to rotate through the coupling 12, suck outside oil from the outside of the filter screen assembly 13, pass through a gap between the stator 9 and the rotor 10, pass through the motor bracket 7, pass through the metal heat radiation plate 6 and the mounting bracket 5, and finally are discharged from the oil outlet nozzle 19 on the oil outlet cover 1.
It is apparent that the above examples of the present application are merely illustrative of the present application and are not limiting of the embodiments of the present application. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary or impossible to exemplify all embodiments herein. And obvious changes and modifications which come within the spirit of the application are desired to be protected.
Claims (10)
1. The brushless motor fuel pump with the built-in controller comprises a control unit, a brushless motor and a fuel pump which are sequentially connected, wherein the control unit comprises an oil outlet cover (1), a controller (2), a heat conducting pad (3), a mounting bracket (5) and a metal heat radiating plate (6);
the mounting bracket (5) is fixedly mounted at the upper end of the brushless motor, a circulation cavity (14) for oil outflow is arranged between the mounting bracket (5) and the upper end of the brushless motor, the circulation cavity (14), the brushless motor and the fuel pump are sequentially communicated, the oil outlet cover (1) is fixedly connected with the upper end of the mounting bracket (5), and the oil outlet cover (1) is provided with an oil outlet (15) communicated with the circulation cavity (14);
the mounting support (5) is in sealing connection with the oil outlet cover (1) to form a sealing cavity (16) for mounting the controller (2), the heat conducting pad (3) and the metal heat dissipation plate (6) are sequentially connected from top to bottom, the lower part of the metal heat dissipation plate (6) is in sealing connection with the mounting support (5) in a mounting hole, and the metal heat dissipation plate (6) penetrates through the mounting hole and is exposed in the circulation cavity (14).
2. The brushless motor fuel pump with built-in controller as claimed in claim 1, wherein: the mounting support (5) and the oil outlet cover (1) are mutually sealed to form a box type sealing structure, a sealing ring (4) is arranged at the joint of the mounting support (5) and the oil outlet cover (1), power components arranged on the controller (2) are distributed on the surface close to the heat conducting pad (3), and the power components are in contact with the heat conducting pad (3).
3. The brushless motor fuel pump with built-in controller as claimed in claim 1, wherein: the metal heat dissipation plate (6) comprises a main plate (61) connected with the heat conduction pad (3) and a heat dissipation part (62) protruding downwards relative to the main plate (61), the heat dissipation part (62) and the mounting hole form a sealed connection, the lower end of the heat dissipation part (62) is exposed in the circulation cavity (14), and a heat dissipation groove (63) corresponding to the circulation cavity (14) is formed in the heat dissipation part (62).
4. The brushless motor fuel pump with built-in controller as claimed in claim 1, wherein: the upper end of oil outlet cover (1) is equipped with electric connection groove (17) and play glib (19), be equipped with electrode (18) of electric connection controller (2) in electric connection groove (17), play glib (19) intercommunication oil-out (15), oil-out (15) set up in one side of oil outlet cover (1), oil-out (15) are flat axial extending structure, one side of oil-out (15) cladding seal chamber (16).
5. The brushless motor fuel pump with built-in controller as claimed in claim 1, wherein: the brushless motor comprises a motor housing (8), a stator (9) and a rotor (10), wherein the motor housing (8) is fixedly connected with a control unit, a motor cavity (81) for accommodating the stator (9) and the rotor (10) is formed in the motor housing (8), the stator (9) is electrically connected with the controller (2), and the rotor (10) is in transmission connection with a fuel pump.
6. The brushless motor fuel pump with built-in controller as claimed in claim 5, wherein: the rotor (10) comprises a rotating shaft (101) and a rotating magnet (103), the rotating magnet (103) is formed on the rotating shaft (101) by injection molding of plastic magnetic materials, a polygonal clamping groove (20) is formed in one end of the rotating magnet (103), the fuel pump comprises a coupling (12) and a pump assembly (11) which are in transmission connection with each other, and the coupling (12) is in transmission connection with the polygonal clamping groove (20).
7. The brushless motor fuel pump with built-in controller as claimed in claim 6, wherein: the rotor (10) further comprises an iron core (102), the iron core (102) is fixedly sleeved with a rotating shaft (101), and the polygonal clamping groove (20) is of a hexagonal structure.
8. The brushless motor fuel pump with built-in controller as claimed in claim 6, wherein: the fuel pump further comprises a filter screen assembly (13), wherein the filter screen assembly (13) is used for filtering fuel.
9. The brushless motor fuel pump with built-in controller as claimed in claim 5, wherein: the brushless motor further comprises a motor support (7), the motor support (7) is installed below the installation support (5) in a clamping mode, a circulation cavity (14) is arranged between the motor support (7) and the installation support (5), and one or more circulation ports (21) which are used for communicating the circulation cavity (14) with the motor cavity (81) are formed in the motor support (7).
10. The brushless motor fuel pump with built-in controller as claimed in claim 9, wherein: the outer surface of play oil cap (1) is equipped with ring channel (22) of circumference extension, the lower part of ring channel (22) is equipped with annular inclined plane (23), the upper portion cladding of motor housing (8) goes out oil cap (1) lower part, installing support (5) and motor support (7), the upper end of motor housing (8) is equipped with oblique inside crooked annular and bordures (82), annular bordures (82) and ring channel (22) constitute the screens laminating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310944299.5A CN116733646A (en) | 2023-07-28 | 2023-07-28 | Brushless motor fuel pump with built-in controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310944299.5A CN116733646A (en) | 2023-07-28 | 2023-07-28 | Brushless motor fuel pump with built-in controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116733646A true CN116733646A (en) | 2023-09-12 |
Family
ID=87902907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310944299.5A Pending CN116733646A (en) | 2023-07-28 | 2023-07-28 | Brushless motor fuel pump with built-in controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116733646A (en) |
-
2023
- 2023-07-28 CN CN202310944299.5A patent/CN116733646A/en active Pending
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