Electronic water pump, pump shell of electronic water pump and new energy vehicle

Abstract

According to the pump shell for the electronic water pump, the structure of a traditional electronic water pump is improved and optimized, an oval flow channel opening in the traditional pump shell is replaced, the design of the flow channel opening with the rectangular section is adopted, it is verified that through shape optimization of the outlet of the flow channel, vortexes generated when water flows through can be reduced, and the service life of the electronic water pump is prolonged. According to the electronic water pump, vibration caused by passing of water flow is greatly reduced, the working noise NVH value of the water pump can be greatly reduced by adopting the rectangular flow channel opening section design compared with an oval flow channel opening, and the technical problems that noise, vibration and poor sound vibration roughness performance exist in the design of an existing electronic water pump for the vehicle, and the use experience of the vehicle is affected are effectively solved. The utility model further provides an electronic water pump comprising the pump shell and a new energy vehicle comprising the electronic water pump.

Description

Technical Field

[0001] The utility model relates to the technical field of circulation systems for new energy vehicles, and in particular to a pump housing for an electronic water pump, an electronic water pump, and a new energy vehicle. Background Art

[0002] With the rapid development of new energy vehicles, more and more people are paying attention to this field. Electronic water pumps are widely used in new energy vehicles, such as engine cooling, battery cooling, and warm air circulation. Because new energy vehicles have high requirements for energy efficiency and environmental performance, the application of electronic water pumps in these areas is particularly important.

[0003] Electronic water pumps possess numerous excellent properties, including acid and alkali resistance, corrosion resistance, rapid self-priming, strong suction, high flow rate, and high pressure. These characteristics enable electronic water pumps to perform exceptionally well in new energy vehicles, effectively ensuring their proper operation. New energy vehicles have become a major trend in future development, and the importance of electronic water pumps, as key components, is self-evident.

[0004] However, the biggest concern with electronic water pumps is NVH (Noise, Vibration, and Harshness), which also includes issues with component strength and lifespan caused by vibration. Electric water pumps in electric vehicles are used for cooling, including battery cooling, warm air circulation, and electric drive. Therefore, multiple water pumps are installed simultaneously in electric vehicles. When multiple water pumps are operating simultaneously, NVH issues become particularly pronounced, significantly reducing the overall user experience of new energy vehicles.

[0005] In summary, existing electronic water pump designs for vehicles have technical problems such as poor noise, vibration and harshness performance, which affect the vehicle usage experience. Utility Model Content

[0006] The technical problem to be solved by the present invention is that the existing electronic water pump design for vehicles has poor noise, vibration and acoustic roughness performance, which affects the vehicle usage experience.

[0007] In order to solve the above problems, the utility model provides a pump casing for an electronic water pump, comprising a volute portion and a joint portion located on one end face of the volute portion, the volute portion and the joint portion being integrally connected, and a flow channel opening being provided on the lateral outer peripheral surface of the volute portion, the cross-section of the flow channel opening being rectangular.

[0008] The utility model provides a water pump casing to improve and optimize the traditional electronic water pump structure, replacing the elliptical flow channel opening on the traditional pump casing with a flow channel opening design with a rectangular cross-section. It has been verified that the shape optimization of the flow channel outlet can reduce eddy currents when water flows through, and greatly reduce the vibration caused by the passage of water. The rectangular flow channel opening cross-section design can greatly reduce the NVH value of the water pump's working noise compared to the elliptical flow channel opening, effectively solving the technical problem that the existing electronic water pump design for vehicles has poor noise, vibration and acoustic roughness performance, which affects the vehicle usage experience.

[0009] As a preferred solution, a guide plate is installed inside the volute. The outer edge of the guide plate is integrally connected to the inner circumference of the volute, and its inner edge has a spiral profile. Based on the above structure, this design further optimizes the internal structure of the volute of the pump casing and installs a spiral guide plate to guide the water flow to the flow channel outlet, minimizing the noise and vibration caused by the water flowing inside the volute.

[0010] As a preferred solution, the end of the guide plate is integrally connected with a tongue structure for water diversion, the cross section of the tongue structure is acute-angled, and the base of the tongue structure smoothly transitions to the side edge of the flow channel opening. The use of acute-angled tongues at the end of the guide plate to replace the existing right-angled tongues, combined with the above-mentioned rectangular flow channel opening design, can further reduce the working noise of the water pump. At the same time, this design also improves the water pump head. The increase in water pump head can enable the vehicle to use a relatively lower-power electronic water pump model to meet its working requirements under the same conditions. Correspondingly, lower water pump power means less working vibration noise, which further helps to reduce water pump noise.

[0011] As a preferred solution, the cross-sectional acute angle of the tongue structure is in the range of 15°-30°, inclusive. Studies have found that when the acute angle of the tongue structure of the pump casing is between 15°-30°, it has a more ideal noise reduction and head increase effect.

[0012] As a preferred solution, the acute angle of the cross section of the tongue structure is 20°. Based on the above design, the acute angle of the tongue is further optimized. Research has found that when the angle is 20°, it has the most ideal noise reduction effect. At this angle, the edge shape design of the tongue end also takes into account the strength and durability of the pump structure.

[0013] As a preferred solution, the tip edge of the tongue structure is chamfered in an arc shape. This design, based on the above-mentioned tongue tip edge angle design, further adopts a tongue edge design with an arc shape chamfer, which can further reduce the water vortex generated at the tongue position, thereby reducing noise. The arc end surface design can also maintain the durability of the tongue structure and resist wear and corrosion.

[0014] As a preferred solution, the inner side of the connector is integrally connected to a water diversion grid structure, comprising multiple radially evenly distributed louvers. The internal structural design of the pump casing connector has been optimized, with an integrated water diversion grid structure incorporated within the original hollow cylindrical connector. The evenly distributed louvers separate the incoming water flow, providing drainage and noise reduction benefits. Furthermore, it effectively prevents larger particles from entering the pump and clogging the flow channel.

[0015] As a preferred solution, the outer side of the volute portion is provided with a boss structure on the periphery of the flow channel opening for thickening the flow channel wall. This design is suitable for the square flow channel opening structure of this application, avoiding the excessive thinness of the casing wall at the corners of the square flow channel. By providing the boss structure on the outer side of the volute at the position corresponding to the flow channel opening, the flow channel wall is thickened, thereby improving the durability of the pump casing.

[0016] The present utility model also provides an electronic water pump comprising any one of the above-mentioned pump casings for electronic water pumps. Since the above-mentioned pump casing of the electronic water pump has the above-mentioned beneficial effects, the electronic water pump comprising the pump casing of the electronic water pump should also have corresponding beneficial effects.

[0017] The present utility model also provides a new energy vehicle including the above-mentioned electronic water pump. Since the above-mentioned electronic water pump has the above-mentioned beneficial effects, the new energy vehicle equipped with the electronic water pump should also have corresponding beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic side view of the exterior structure of a pump housing for an electronic water pump provided by the utility model;

[0019] Figure 2 for Figure 1 Schematic diagram of the overall outer structure of the middle pump casing;

[0020] Figure 3 for Figure 1 Schematic diagram of the overall inner structure of the middle pump casing;

[0021] Figure 4 for Figure 3 Schematic diagram of the partial structure of the tongue structure position inside the middle pump casing.

[0022] in, Figure 1-Figure 4 middle:

[0023] 1. Volute; 2. Joint; 3. Drainage plate; 4. Tongue structure; 5. Flow channel; 6. Boss structure; 7. Water distribution grid structure. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0025] Before explaining the working principle of the present invention in detail, the description of the present invention needs to be further explained: In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "two ends," "one end," "the other end," and the like, indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection, a direct connection, an indirect connection via an intermediate medium, or a connection between two components by welding. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model in specific circumstances.

[0027] refer to Figure 1-Figure 4 The following examples are described: Figure 1 A schematic side view of the exterior structure of a pump housing for an electronic water pump provided by the utility model; Figure 2 for Figure 1 Schematic diagram of the overall outer structure of the middle pump casing; Figure 3 for Figure 1 Schematic diagram of the overall inner structure of the middle pump casing; Figure 4 for Figure 3 Schematic diagram of the partial structure of the tongue structure position inside the middle pump casing.

[0028] The pump casing for the electronic water pump provided in this embodiment includes a volute portion 1 and a joint portion 2 located on one end face of the volute portion 1. The volute portion 1 and the joint portion 2 are integrally connected. A flow channel opening 5 is provided on the lateral outer peripheral surface of the volute portion 1, and the cross-section of the flow channel opening 5 is rectangular.

[0029] The utility model provides a water pump casing to improve and optimize the traditional electronic water pump structure, replacing the elliptical flow channel opening 5 on the traditional pump casing with a flow channel opening 5 design with a rectangular cross-section. It has been verified that the shape optimization of the flow channel outlet can reduce the vortex when the water flows through, and greatly reduce the vibration caused by the water flow. The rectangular flow channel opening 5 cross-section design can greatly reduce the NVH value of the water pump's working noise compared to the elliptical flow channel opening 5, effectively solving the technical problem that the existing electronic water pump design for vehicles has poor noise, vibration and acoustic roughness performance, which affects the vehicle usage experience.

[0030] In the technical solution provided in this embodiment, a guide plate 3 with a spiral side edge profile is provided inside the volute portion 1. The end of the guide plate 3 adjacent to the flow channel opening 5 is integrally connected with a tongue structure 4, and the cross section of the tongue structure 4 is acute-angled. This design further optimizes the internal structure of the volute portion 1 of the pump casing on the basis of the above structure, and adopts the end tongue of the acute-angled guide plate 3 to replace the right-angled tongue of the existing design. In conjunction with the above-mentioned rectangular flow channel opening 5 design, it can further reduce the working noise of the water pump. At the same time, this design also improves the water pump head. The increase in the water pump head can make the vehicle use a relatively lower-power electronic water pump model to meet its working requirements under the same conditions. Correspondingly, lower water pump power means smaller working vibration noise, which further helps to reduce the water pump noise.

[0031] In the technical solution provided in this embodiment, the acute angle of the cross section of the tongue structure 4 ranges from 15° to 30°, inclusive. Studies have shown that when the acute angle of the tongue structure 4 of the pump casing is between 15° and 30°, it achieves more ideal noise reduction and lift improvement effects.

[0032] In the technical solution provided in this embodiment, the acute angle of the cross section of the tongue structure 4 is 20°. Based on the above design, the acute angle of the tongue is further optimized. After research, it is found that when the angle is 20°, it has the most ideal noise reduction effect. At this angle, the ridged shape design of the tongue end also takes into account the strength and durability of the pump structure.

[0033] In the technical solution provided in this embodiment, the tip edge of the tongue structure 4 is chamfered in an arc shape. This design, based on the above-mentioned tongue tip edge angle design, further adopts a tongue edge design with an arc shape chamfer, which can further reduce the water vortex generated at the tongue position, thereby reducing noise. The design of the arc end surface can also maintain the durability and resistance to wear and corrosion of the tongue structure 4.

[0034] In the technical solution provided by this embodiment, a water-dividing grid structure 7 is integrally connected to the inner side of the joint. This grid structure 7 comprises multiple radially evenly distributed louvers. The internal structural design of the pump casing joint is optimized, and an integrated water-dividing grid structure is incorporated within the previously hollow cylindrical joint. The evenly distributed louvers separate the incoming water flow, providing drainage and noise reduction. Furthermore, it effectively prevents larger particles from entering the pump and clogging the flow channel.

[0035] In the technical solution provided in this embodiment, the volute portion is provided with a boss structure 6 at the outer edge of the flow channel opening for thickening the flow channel wall. This design is suitable for the square flow channel opening structure of this application, avoiding the excessive thinness of the casing wall at the corners of the square flow channel. By providing a boss structure on the outer side of the volute corresponding to the flow channel opening, the flow channel wall is thickened, thereby improving the durability of the pump casing.

[0036] The present utility model also provides an electronic water pump comprising any one of the above-mentioned pump casings for electronic water pumps. Since the above-mentioned pump casing of the electronic water pump has the above-mentioned beneficial effects, the electronic water pump comprising the pump casing of the electronic water pump should also have corresponding beneficial effects.

[0037] The present utility model also provides a new energy vehicle including the above-mentioned electronic water pump. Since the above-mentioned electronic water pump has the above-mentioned beneficial effects, the new energy vehicle equipped with the electronic water pump should also have corresponding beneficial effects.

[0038] Although the disclosure is as described above, the scope of protection of the disclosure is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of protection of the utility model.

Claims

1. A pump housing for an electronic water pump, comprising a volute portion (1) and a joint portion (2) located on one end surface of the volute portion (1), wherein the volute portion (1) and the joint portion (2) are integrally connected, and characterized in that: A flow passage opening (5) is provided on the lateral outer peripheral surface of the volute portion (1), and the cross section of the flow passage opening (5) is rectangular.

2. The pump housing for an electronic water pump according to claim 1, characterized in that: A guide plate (3) is provided inside the volute portion (1); the outer edge of the guide plate (3) is integrally connected to the inner circumference of the volute portion (1); and the inner edge profile is spiral.

3. The pump housing for an electronic water pump according to claim 2, characterized in that: The end of the guide plate (3) is integrally connected with a tongue structure (4) for water distribution, the tongue structure (4) is located inside the flow channel opening (5), the cross section of the tongue structure (4) is acute-angled, and the base of the tongue structure (4) smoothly transitions to the side edge of the flow channel opening (5).

4. The pump housing for an electronic water pump according to claim 3, characterized in that: The acute angle of the cross section of the tongue structure (4) is in the range of 15° to 30°, including the end values.

5. The pump housing for an electronic water pump according to claim 4, characterized in that: The acute angle of the cross section of the tongue structure (4) is 20°.

6. The pump housing for an electronic water pump according to claim 3, characterized in that: The tip edge of the tongue structure (4) is chamfered in an arc shape.

7. The pump housing for an electronic water pump according to any one of claims 1 to 6, characterized in that: The joint portion (2) is in the shape of a hollow tube, and its inner side surface is integrally connected to a water-dividing grid structure (7), wherein the water-dividing grid structure (7) comprises a plurality of grid petals uniformly distributed in the radial direction.

8. The pump housing for an electronic water pump according to claim 1, characterized in that: The outer side surface of the volute portion (1) is provided with a boss structure (6) for thickening the flow channel wall at the outer periphery of the flow channel opening (5).

9. An electronic water pump, characterized in that: The invention comprises a pump housing for an electronic water pump according to any one of claims 1 to 8.

10. A new energy vehicle, comprising a vehicle body and an electronic water pump arranged in the vehicle body, characterized in that: The electronic water pump is the electronic water pump according to claim 9.

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