Bidirectional impeller structure of automobile electronic water pump
By designing a bidirectional impeller structure and using engineering plastic materials, the problem of existing impellers only being able to rotate in one direction has been solved, achieving bidirectional rotation and improved flow efficiency, reducing costs and friction losses, and extending service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI YINYI AUTO PARTS MFG CO LTD
- Filing Date
- 2025-07-30
- Publication Date
- 2026-07-03
AI Technical Summary
Existing automotive electronic water pump impellers can only rotate in one direction, which cannot meet the requirements for reverse rotation, resulting in low applicability, high production costs, and inconvenience in use.
A bidirectional impeller structure for an automotive electronic water pump is designed. By setting guide plates and covers on the forward and reverse impeller plates, bidirectional flow of coolant and bidirectional rotation of the impeller are achieved. Engineering plastic material is used to reduce weight and improve weather resistance.
It enables bidirectional rotation of the impeller, reduces production costs, improves applicability and flow efficiency, reduces eddy current losses and friction losses, and extends service life.
Smart Images
Figure CN224453176U_ABST
Abstract
Description
Technical Field
[0001] This utility model specifically relates to a bidirectional impeller structure for an automotive electronic water pump, belonging to the field of impeller technology. Background Technology
[0002] The impeller is the core component of an electronic water pump. It primarily generates fluid power through rotation, propelling the circulation of media such as coolant and water. The performance of the impeller directly affects the system's circulation efficiency, and its material and structural design must be precisely matched according to the characteristics of the media and operating conditions. In the future, with the development of new energy vehicles and high-end manufacturing, impellers will be upgraded towards lightweight design, high weather resistance, and low noise. Simultaneously, fluid simulation technology will be used to optimize blade shape, further improving energy efficiency.
[0003] A search revealed that CN222887102U discloses a bidirectional impeller structure for an automotive electronic water pump, including an impeller assembly. The impeller assembly comprises an upper impeller cover and a lower impeller cover, formed by welding the upper and lower covers together. Depending on the application, perforations are punched in either the upper or lower cover to create water inlets. When the impeller assembly needs to rotate clockwise, perforations are punched in the upper cover to create the upper cover water inlet, allowing coolant to flow in and out through the inlet. Conversely, when the impeller assembly needs to rotate counter-clockwise, perforations are punched in the lower cover to open the lower cover water inlet, achieving the same function. This structure improves the applicability of the impeller assembly, eliminating the need for additional molds to manufacture impellers with different structures during production, thereby reducing production costs and increasing efficiency.
[0004] Traditional impeller assemblies can only rotate in one direction. This type of impeller has limited applicability. If there is a need for reverse rotation, the above-mentioned impeller cannot meet the requirements and needs to be replaced, which is inconvenient to use. Utility Model Content
[0005] To overcome the technical defects of the existing technology, this utility model provides a bidirectional impeller structure for an automotive electronic water pump.
[0006] The technical solution adopted by this utility model is as follows: It includes a connecting shaft; a forward impeller plate is rotatably connected to the side wall of the connecting shaft, and multiple forward guide plates are fixedly connected to the upper surface of the forward impeller plate. A reverse impeller plate is provided below the forward impeller plate, and the reverse impeller plate is rotatably connected to the connecting shaft. Multiple reverse guide plates are fixedly connected to the bottom surface of the reverse impeller plate. An upper cover is provided on one side of the forward guide plate, and multiple upper guide grooves are opened on the surface of the upper cover. A first side guide groove is opened on the side wall of the upper cover. A lower cover is provided on one side of the reverse impeller plate, and a lower guide groove is opened on the bottom surface of the lower cover. A second side guide groove is opened on the side wall of the lower cover. When coolant flows from the upper... After the coolant flows into the upper cover, the forward impeller plate, located on the forward impeller plate inside the upper cover, rotates in the forward direction. The forward impeller plate and the forward impeller plate work together to discharge the forward-flowing coolant from the first side channel. When reverse rotation is required, the coolant flows into the lower cover from the lower channel. The reverse impeller plate, located on the reverse impeller plate inside the lower cover, rotates in the reverse direction. The reverse impeller plate and the reverse impeller plate work together to discharge the reverse-flowing coolant from the second side channel, thus satisfying the requirement for bidirectional impeller rotation.
[0007] Preferably, both the forward and reverse flow plates have multiple strip grooves on their sidewalls.
[0008] By adopting the above technical solutions, the coolant can be guided to release pressure in advance, avoiding local low pressure that could lead to liquid vaporization. The strip groove can adjust the angle at which the coolant enters the forward and reverse impeller plates, reducing eddy current losses. The high-speed rotating forward and reverse guide plates reduce local weight through slotting, assisting in dynamic balance adjustment.
[0009] Preferably, multiple guide plates are fixedly connected to the inner walls of both the upper and lower covers.
[0010] By adopting the above technical solution, the coolant flowing inside the upper and lower covers can be guided, facilitating the discharge of the coolant from the first and second side drainage channels on one side of the upper and lower covers, thus providing smooth flow of coolant.
[0011] Preferably, the inner walls of both the upper and lower covers are fixedly connected with multiple reinforcing ribs.
[0012] By adopting the above technical solution, the upper and lower caps will be more secure during use, thus extending their service life.
[0013] Preferably, the sidewall of the reinforcing rib is provided with a flow guiding slope.
[0014] By adopting the above technical solution, a certain guiding effect is provided for the coolant flowing out from the first side drain and the lower cover, making the coolant flow more smoothly.
[0015] Preferably, the material of the forward impeller plate and the reverse impeller plate is engineering plastic.
[0016] By adopting the above technical solution, the cooling requirements of the motor controller can be met. Moreover, the engineering plastic has high resistance to ethylene glycol coolant corrosion and good self-lubricating properties, which can reduce the friction loss between the impeller and the sealing ring. The density of the engineering plastic is only half that of aluminum alloy, resulting in significant weight reduction.
[0017] Preferably, there are at least four upper and lower drainage channels.
[0018] By adopting the above technical solution, the number of upper and lower drainage channels can be increased according to usage requirements to meet different coolant flow needs.
[0019] The beneficial effects of this utility model are:
[0020] 1. This automotive electronic water pump features a bidirectional impeller structure. When coolant enters the upper cover from the upper drainage channel, a forward drainage plate on the forward impeller plate inside the upper cover drives the forward impeller plate to rotate in the forward direction. The forward-rotating impeller plate and the forward drainage plate work together to discharge the forward-flowing coolant from the first drainage channel. When reverse rotation is required, coolant flows into the lower cover from the lower drainage channel. A reverse drainage plate on the reverse impeller plate inside the lower cover drives the reverse impeller plate to rotate in the reverse direction. The reverse-rotating impeller plate and the reverse drainage plate work together to discharge the reverse-flowing coolant from the second drainage channel, thus satisfying the requirement for bidirectional impeller rotation.
[0021] 2. This automotive electronic water pump features a bidirectional impeller structure with a slotted design that guides the coolant to release pressure in advance, preventing localized low pressure from causing liquid vaporization. The slotted design also allows for adjustment of the angle at which the coolant enters the forward and reverse impeller plates, reducing eddy current losses. The high-speed rotating forward and reverse guide plates reduce localized weight through slotting, aiding in dynamic balance adjustment. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0023] Figure 2 This is a top view of the structure of this utility model;
[0024] Figure 3 This is one of the side view structural schematic diagrams of this utility model;
[0025] Figure 4This is an exploded view of the overall structure of this utility model;
[0026] Figure 5 This is the second side view schematic diagram of the structure of this utility model;
[0027] In the diagram: 1. Connecting shaft; 2. Forward impeller plate; 3. Forward guide plate; 4. Reverse impeller plate; 5. Reverse guide plate; 6. Upper cover; 7. Upper guide groove; 8. First side guide groove; 9. Lower cover; 10. Lower guide groove; 11. Second side guide groove; 12. Strip groove; 13. Guide plate; 14. Reinforcing rib; 15. Guide slope. Detailed Implementation
[0028] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.
[0029] like Figures 1-5 As shown, this embodiment provides a bidirectional impeller structure for an automotive electronic water pump, including a connecting shaft 1. A forward impeller plate 2 is rotatably connected to the side wall of the connecting shaft 1, and multiple forward guide plates 3 are fixedly connected to the upper surface of the forward impeller plate 2. A reverse impeller plate 4 is provided below the forward impeller plate 2, and the reverse impeller plate 4 is rotatably connected to the connecting shaft 1. Multiple reverse guide plates 5 are fixedly connected to the bottom surface of the reverse impeller plate 4. An upper cover 6 is provided on one side of the forward guide plate 3, and multiple upper guide grooves 7 are opened on the surface of the upper cover 6. A first side guide groove 8 is opened on the side wall of the upper cover 6. A lower cover 9 is provided on one side of the reverse impeller plate 4, and a lower guide groove 10 is opened on the bottom surface of the lower cover 9. A second side guide groove 11 is opened on the side wall of the lower cover 9. After the coolant enters the interior of the upper cover 6 from the upper drainage channel 7, it is driven to rotate in the forward direction by the forward drainage plate 3 set on the forward impeller plate 2 inside the upper cover 6. Then, through the cooperation of the forward rotating forward impeller plate 2 and the forward drainage plate 3, the forward-flowing coolant is discharged from the first side drainage channel 8. When reverse rotation is required, the coolant can flow into the interior of the lower cover 9 from the lower drainage channel 10. The reverse drainage plate 5 set on the reverse impeller plate 4 inside the lower cover 9 drives the reverse impeller plate 4 to rotate in the reverse direction. Then, through the cooperation of the reverse rotating reverse impeller plate 4 and the reverse drainage plate 5, the reverse-flowing coolant is discharged from the second side drainage channel 11, thus satisfying the requirement that the impeller can rotate in both directions.
[0030] In this embodiment, both the forward guide plate 3 and the reverse guide plate 5 have multiple strip grooves 12 on their sidewalls. The design of the strip grooves 12 can guide the coolant to release pressure in advance, avoiding local low pressure that could lead to liquid vaporization. The strip grooves 12 can adjust the angle at which the coolant enters the forward impeller plate 2 and the reverse impeller plate 4, reducing eddy current losses. The high-speed rotating forward guide plate 3 and the reverse guide plate 5 reduce local weight through the grooves, assisting in dynamic balance adjustment.
[0031] In this embodiment, multiple guide plates 13 are fixedly connected to the inner walls of the upper cover 6 and the lower cover 9. The design of the guide plates 13 can provide guidance for the coolant flowing inside the upper cover 6 and the lower cover 9, so that the coolant can be discharged from the first side drainage groove 8 and the second side drainage groove 11 on one side of the upper cover 6 and the lower cover 9, thus providing smooth flow of coolant.
[0032] In this embodiment, multiple reinforcing ribs 14 are fixedly connected to the inner walls of the upper cover 6 and the lower cover 9. The design of the reinforcing ribs 14 will provide the upper cover 6 and the lower cover 9 with firmness during use and extend their service life.
[0033] In this embodiment, the side wall of the reinforcing rib 14 is provided with a flow guiding slope 15. The design of the flow guiding slope 15 provides a certain guiding effect for the coolant flowing out from the first side drainage groove 8 and the lower cover 9, making the coolant flow more smoothly.
[0034] In this embodiment, the forward impeller plate 2 and the reverse impeller plate 4 are made of engineering plastics. Engineering plastics have high temperature resistance, which can meet the cooling requirements of the motor controller. In addition, engineering plastics have high resistance to ethylene glycol coolant corrosion and good self-lubrication, which can reduce the friction loss between the impeller and the sealing ring. The density of engineering plastics is only half that of aluminum alloy, resulting in a significant weight reduction effect.
[0035] In this embodiment, there are at least four upper drainage channels 7 and four lower drainage channels 10. The number of upper drainage channels 7 and lower drainage channels 10 can be increased according to usage requirements to meet different coolant flow rate needs.
[0036] The implementation principle of the bidirectional impeller structure of an automotive electronic water pump according to this application embodiment is as follows: After the coolant enters the interior of the upper cover 6 from the upper drainage channel 7, the forward drainage plate 3 set on the forward impeller plate 2 inside the upper cover 6 drives the forward impeller plate 2 to rotate in the forward direction. Then, through the cooperation of the forward rotating forward impeller plate 2 and the forward drainage plate 3, the forward-flowing coolant is discharged from the first side drainage channel 8. When reverse rotation is required, the coolant can flow into the interior of the lower cover 9 from the lower drainage channel 10. Through the reverse drainage plate 5 set on the reverse impeller plate 4 inside the lower cover 9, the reverse impeller plate 4 is driven to rotate in the reverse direction. Then, through the cooperation of the reverse rotating reverse impeller plate 4 and the reverse drainage plate 5, the reverse-flowing coolant is discharged from the second side drainage channel 11, thereby satisfying the requirement that the impeller can rotate in both directions.
[0037] The design of the strip groove 12 can guide the coolant to release pressure in advance, avoiding liquid vaporization caused by local low pressure. The strip groove 12 can adjust the angle at which the coolant enters the forward impeller plate 2 and the reverse impeller plate 4, reducing eddy current losses. The high-speed rotating forward guide plate 3 and the reverse guide plate 5 reduce local weight through slotting, assisting in dynamic balance adjustment.
[0038] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should be considered within its protection scope.
Claims
1. A bidirectional impeller structure for an automotive electric water pump, characterized by comprising: Includes a connecting shaft (1): a forward impeller plate (2) is rotatably connected to the side wall of the connecting shaft (1), and a plurality of forward guide plates (3) are fixedly connected to the upper surface of the forward impeller plate (2). A reverse impeller plate (4) is provided below the forward impeller plate (2), and the reverse impeller plate (4) is rotatably connected to the connecting shaft (1). A plurality of reverse guide plates (5) are fixedly connected to the bottom surface of the reverse impeller plate (4), and an upper cover (6) is provided on one side of the forward guide plate (3). A plurality of upper guide grooves (7) are opened on the surface of the upper cover (6), and a first side guide groove (8) is opened on the side wall of the upper cover (6). A lower cover (9) is provided on one side of the reverse impeller plate (4), and a lower guide groove (10) is opened on the bottom surface of the lower cover (9). A second side guide groove (11) is opened on the side wall of the lower cover (9).
2. The bi-directional impeller structure of an automotive electric water pump according to claim 1, characterized in that: Both the forward flow guide plate (3) and the reverse flow guide plate (5) have multiple strip grooves (12) on their side walls.
3. The bi-directional impeller structure of an automotive electric water pump according to claim 1, wherein: Multiple guide plates (13) are fixedly connected to the inner walls of both the upper cover (6) and the lower cover (9).
4. The bi-directional impeller structure of an automotive electric water pump according to claim 1, wherein: The inner walls of the upper cover (6) and the lower cover (9) are both fixedly connected with multiple reinforcing ribs (14).
5. The bi-directional impeller structure of an automotive electric water pump according to claim 4, wherein: The sidewall of the reinforcing rib (14) is provided with a flow guiding slope (15).
6. The bi-directional impeller structure of an automotive electric water pump according to claim 1, wherein: The forward impeller plate (2) and the reverse impeller plate (4) are made of engineering plastics.
7. The bi-directional impeller structure of an automotive electric water pump according to claim 1, wherein: The number of upper drainage channels (7) and lower drainage channels (10) is at least four.