Electronic water pump of thermal management integrated module

Abstract

The invention provides an electronic water pump of a thermal management integrated module, the electronic water pump comprises a casing assembly, an impeller assembly and an impeller axial positioning element, the casing assembly comprises a plurality of pressurizing guide vanes, an impeller rotating cavity, a motor assembly, a crankshaft, a casing and a connector, the multiple pressurizing guide vanes are arranged on the portion, on the periphery of the impeller rotating cavity, of the machine shell, the pressurizing guide vanes are arc-shaped sheet bodies, and a pressurizing cavity is formed by the multiple pressurizing guide vanes and the mounting hole wall of the runner plate and used for pressurizing; the impeller assembly is arranged on the crankshaft in a sleeving mode and located in the impeller rotating cavity, and impellers of the impeller assembly correspond to the positions of the pressurizing guide vanes; the connector assembly is electrically connected with the motor assembly; the impeller axial positioning element is arranged on the crankshaft and used for limiting the impeller assembly. The number of parts and the material cost are reduced, and the enterprise competitiveness is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile thermal management, in particular to an electronic water pump for a thermal management integrated module installed in a thermal management system of an automobile. BACKGROUND

[0002] With the development of science and technology and the progress of technology, automobile products are changing rapidly, and higher requirements are put forward for products. Automobile parts are an important field for China's automobile industry to participate in globalization. In response to the rapid development of electronic technology and its wide application in the automobile industry, the automobile industry is developing rapidly towards electrification and intelligence. The thermal management system is increasingly important for the endurance, safety and comfort of the vehicle, and the requirements for thermal management of the vehicle are also increasing. The thermal management integrated module can realize accurate management of thermal energy for different energy-consuming parts and ensure that each energy-consuming part is at the best working temperature.

[0003] In the thermal management integrated module of the automobile, the electronic water pump is the power source for the flow of the cooling medium (such as antifreeze). The electronic water pump of the prior art is installed on the flow channel plate of the thermal management integrated module. The water pump needs to be equipped with a volute. When installing, the water outlet of the volute needs to be aligned with the water inlet of the flow channel plate. However, in actual application, there is a gap between the volute and the flow channel plate pump mounting hole wall, and there is also a misalignment between the volute water outlet and the flow channel plate water inlet, which leads to reduced hydraulic performance and increased noise.

[0004] In some thermal management integrated modules, although a voluteless electronic water pump is used, in actual application, the volute is only integrated on the flow channel plate. The flow channel plate needs to be specially made, and is not very versatile. The material of the flow channel plate has special requirements, and the production cost is high. If the volute is not integrated on the flow channel plate, the pump mounting hole on the flow channel plate is a cylindrical cavity and does not have a boosting effect. If a volute water pump is directly installed, the performance of the water pump cannot meet the requirements.

[0005] Therefore, the electronic water pump of the prior art still has room for improvement. SUMMARY

[0006] In view of the above defects, the purpose of the present application is to provide a voluteless electronic water pump for a thermal management integrated module installed in a thermal management system of an automobile. Without changing the structure and material of the existing thermal management integrated module flow channel plate, the water pump performance and low noise requirements of the thermal management integrated module are met to solve the technical problems of the prior art.

[0007] To achieve the above purpose, the present application adopts the following technical solutions:

[0008] An electronic water pump of a thermal management integrated module, the electronic water pump comprising a casing assembly, an impeller assembly and an impeller axial positioning element, the casing assembly comprising a plurality of booster vanes, an impeller rotating cavity, a motor assembly, a shaft, a casing and a connector, the plurality of booster vanes being arranged on the casing at the periphery of the impeller rotating cavity, the booster vanes being arc-shaped pieces, the plurality of booster vanes and the mounting hole wall of the flow channel plate forming a booster cavity for boosting pressure; the impeller assembly being sleeved on the shaft and located in the impeller rotating cavity, the impeller of the impeller assembly corresponding to the positions of the plurality of booster vanes; the connector being electrically connected to the motor assembly; the impeller axial positioning element being arranged on the shaft for limiting the impeller assembly.

[0009] The electronic water pump of the thermal management integrated module according to the preferred embodiment of the present application, the impeller assembly further comprising a water inlet pipe part and a rotor part, the water inlet pipe part being a hollow cylinder, the water inlet pipe part corresponding to the water inlet pipe of the flow channel plate.

[0010] The electronic water pump of the thermal management integrated module according to the preferred embodiment of the present application, the casing comprising a radially protruding locking part, the locking part being a piece with a plurality of locking holes, the locking part locking the flow channel plate through fasteners.

[0011] The electronic water pump of the thermal management integrated module according to the preferred embodiment of the present application, the locking part further comprising a positioning pin, the positioning pin being used for accurately assembling the electronic water pump.

[0012] The electronic water pump of the thermal management integrated module according to the preferred embodiment of the present application, the electronic water pump further comprising a casing sealing ring, the casing sealing ring being arranged on the casing for preventing water seepage.

[0013] The electronic water pump of the thermal management integrated module according to the preferred embodiment of the present application, the impeller axial positioning element comprising an end face bearing and an elastic retainer, the end face bearing and the elastic retainer being connected in sequence on the shaft, the shaft comprising a recess part, the center hole of the elastic retainer abutting against the step of the recess part.

[0014] The electronic water pump of the thermal management integrated module according to the preferred embodiment of the present application, the casing assembly further comprising an axially protruding electric connector, the electric connector being a hollow annular body, the connector being arranged in the electric connector, the outer surface of the electric connector comprising a clamping protrusion, the clamping protrusion being used for clamping a power supply rack.

[0015] The electronic water pump of the thermal management integrated module according to the preferred embodiment of the present application, the plurality of booster vanes, the impeller rotating cavity, the casing and the electric connector being integrally formed.

[0016] The technical scheme of the present application improves the electronic water pump of the heat management system of the prior art automobile, designs a general-purpose electronic water pump without a volute which meets the performance and low noise requirements of the water pump of the heat management integrated module, is directly arranged on the flow channel plate without changing the structure and material of the existing heat management integrated module flow channel plate, uses the flow channel plate to replace the volute to reduce the material cost, there is no misalignment between the volute water outlet and the flow channel plate water inlet, the hydraulic performance and low noise are guaranteed, in addition, a booster guide vane is designed, the booster guide vane is located at the periphery of the impeller rotating cavity at the impeller end, cooperates with the flow channel plate mounting hole wall to form a booster cavity, so that when the impeller rotates, the booster function is realized, and the antifreeze can be pushed to a farther place.

[0017] Due to the adoption of the above technical features, the present application has the following advantages and positive effects compared with the prior art:

[0018] Firstly, the electronic water pump without a volute of the present application reduces the operating noise, has strong adaptability, and improves the competitiveness of the product;

[0019] Secondly, the electronic water pump without a volute of the present application reduces the number of parts and material cost, and improves the competitiveness of the enterprise;

[0020] Thirdly, the booster guide vane of the electronic water pump without a volute of the present application is located at the periphery of the impeller rotating cavity at the impeller end, cooperates with the flow channel plate mounting hole wall to form a booster cavity, so that when the impeller rotates, the booster function is realized, and the antifreeze can be pushed to a farther place.

[0021] Of course, implementing any one of the specific embodiments of the present application does not necessarily have all the above technical effects at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic diagram of the electronic water pump of the present application;

[0023] Figure 2 is an exploded schematic diagram of the electronic water pump of the present application;

[0024] Figure 3 is a top view schematic diagram of the present application; Figure 1

[0025] Figure 4 is a perspective schematic diagram of the electronic water pump of the present application;

[0026] Figure 5 is a cut open schematic diagram of the electronic water pump of the present application. DETAILED DESCRIPTION

[0027] ​The application is described in detail below with reference to the drawings. However, the application is not limited to these embodiments. The application encompasses any alternatives, modifications, equivalents, and / or improvements within the spirit and scope of the present application. For a complete understanding of the present application, specific details are provided in the following description of the preferred embodiments of the present application. However, those skilled in the art will understand that the present application can be practiced without all the specific details given below. In some instances, well-known methods, procedures, protocols, components, and / or assemblies have not been described in detail in order to avoid obscuring the present application.

[0028] Please refer to Figure 1 and Figure 2 The electronic water pump of the present application is applied to a vehicle and is a power source for cooling medium flow. The electronic water pump of the present application is a volute-free electronic water pump, which meets the performance and low noise requirements of the water pump of the thermal management integrated module without changing the structure and material of the flow channel plate of the thermal management integrated module. In addition, a booster vane is designed. The booster vane is located at the periphery of the impeller rotating cavity and cooperates with the installation hole wall of the flow channel plate to form a booster cavity. Thus, when the impeller rotates, the booster function is realized, and the cooling medium (e.g., antifreeze) can be pushed further.

[0029] Please refer to Figure 3 , Figure 4 and Figure 5 The electronic water pump of the present application includes a housing assembly 10, an impeller assembly 20, and an impeller axial positioning element 40. The housing assembly 10 includes a plurality of booster vanes 11, an impeller rotating cavity 12, a motor assembly 13, a shaft 14, a housing 15, and a connector 16. Figure 4 The plurality of booster vanes 11 are arranged on the housing 15 at the periphery of the impeller rotating cavity 12. The booster vanes 11 are arc-shaped pieces. The plurality of booster vanes 11 and the installation hole wall of the flow channel plate form a booster cavity for boosting. Thus, when the impeller assembly 20 rotates, the booster function is realized. In the embodiment of the present application, the number of booster vanes 11 is eight, but this cannot be used to limit the present application. As long as the number of booster vanes can cooperate with the installation hole wall of the flow channel plate to achieve the booster function, it should be within the protection scope of the present application. The impeller assembly 20 is sleeved on the shaft 14 and partially located in the impeller rotating cavity 12. The impeller 21 of the impeller assembly 20 corresponds to the positions of the plurality of booster vanes 11. When working, the impeller 21 rotates to make the cooling medium (e.g., antifreeze) move axially into the impeller 21, and then the cooling medium is thrown out of the impeller 21 to move radially through the booster cavity formed by the booster vanes 11 and the installation hole wall of the flow channel plate. Due to the effect of the booster cavity, the cooling medium (e.g., antifreeze) can be pushed further.

[0030] In addition, the connector 16 is electrically connected to the motor assembly 13 for controlling the opening and closing of the motor assembly 13; the impeller axial positioning element 40 is arranged on the shaft 14 for limiting the impeller assembly 20, the impeller assembly 20 further comprises a water inlet pipe portion 22 and a rotor portion 23, the water inlet pipe portion 22 is a hollow cylinder, the water inlet pipe portion 22 corresponds to the water inlet pipe of the flow channel plate, and the impeller 21 rotates under the driving of the rotor portion 23 to form a suction force so that the cooling medium (such as antifreeze) moves axially through the water inlet pipe portion 22 into the impeller 21.

[0031] Please refer to Figure 4 The electronic water pump of the present application is a three-dimensional schematic diagram, the shell 15 comprises a radially protruding locking portion 151, the locking portion 151 is a sheet body provided with a plurality of locking holes 152, in the embodiment of the present application, the number of the locking holes 152 is four, but this cannot be used to limit the present application, more or less. Only the number that can be stably connected should be the protection scope of the present application, the locking portion 151 is locked with the flow channel plate through fasteners, the flow channel plate is provided with through holes at positions corresponding to the locking holes 152, and the fasteners penetrate the two through holes to lock the locking portion 151 and the flow channel plate, that is, the electronic water pump is locked on the flow channel plate. In addition, the locking portion 151 further comprises a positioning pin 153, the positioning pin 153 is a protrusion protruding from the surface of the locking portion 151, the flow channel plate is provided with a groove at a position corresponding to the positioning pin 153, and the positioning pin 153 is used for accurately assembling the electronic water pump.

[0032] Please refer to Figure 1 、 Figure 2 、 Figure 3 And Figure 5 The electronic water pump further comprises a shell sealing ring 30, the shell sealing ring 30 is arranged on the shell 15 for preventing water seepage, Figure 1 In the embodiment, the shell sealing ring 30 is located on the surface of the locking portion 151 facing the booster vane 11, after the locking portion 151 is locked with the flow channel plate through the fasteners, due to the existence of the shell sealing ring 30, the cooling medium (such as antifreeze) passing through the booster vane 11 will not flow out from the gap between the locking portion 151 and the flow channel plate, thereby ensuring the sealing performance of the booster cavity.

[0033] Please refer to Figure 2 、 Figure 4 And Figure 5The impeller shaft axial positioning element 40 comprises an end face bearing 41 and an elastic retainer 42, which are sequentially connected to the shaft 14, the end face bearing 41 is a circular sheet with a central through hole comprising at least a straight section, the circular column of the shaft 14 is provided with at least a straight notch corresponding to the at least a straight section, and the end face bearing 41 cannot rotate after being connected to the shaft 14 due to the straight section. In addition, the elastic retainer 42 is a sheet with a flat outer ring surface and a circular arc inner ring surface. The shaft 14 comprises a groove portion 141, the central hole of the elastic retainer 42 abuts against the step of the groove portion 141, after assembly, there is a gap between the lower surface of the end face bearing 41 and the impeller assembly 20 which is also connected to the shaft 14, the circular arc inner ring surface of the elastic retainer 42 abuts against the step of the groove portion 141 in a clamped state, and the flat outer ring surface of the elastic retainer 42 abuts against the upper surface of the end face bearing 41. When the impeller assembly 20 is subjected to a downward force, the elastic force of the circular arc inner ring surface resists the downward force, so that the impeller assembly 20 can be stably fixed on the shaft 14.

[0034] As shown in Figure 5 The shell assembly 10 further comprises an axially protruding electrical connector 17, the electrical connector 17 is a hollow annular body, the connector 16 is arranged in the electrical connector 17, and the outer surface of the electrical connector 17 comprises a clamping protrusion 171 for clamping a power supply stand, the power supply stand provides an external power supply, and the electrical connector 17 and the power supply stand can be waterproofed by a waterproof wire harness connector structure. In addition, Figure 5 As can be seen, the plurality of booster vanes 11, the impeller rotating cavity 12, the shell 15 and the electrical connector 17 are integrally formed.

[0035] In summary, the electronic water pump of the present application is installed on the thermal management system of a vehicle for thermal management integrated module, the electronic water pump does not have a volute, and does not need to integrate a volute on the flow channel plate, can be directly assembled on the flow channel plate of the vehicle, and forms a booster cavity by using the mounting hole wall of the flow channel plate and the booster vane 11, realizes the booster function when the impeller 21 rotates, and can push the cooling medium (such as antifreeze) to a farther place. Since there is no volute, the electronic water pump of the present application reduces the number of parts, material cost, and product noise, and in addition, the design of the booster cavity better improves the pushing function of the electronic water pump of the present application.

[0036] It should be noted that the use of the terms "first", "second", etc. to define parts only facilitates the differentiation of corresponding parts, and the above terms have no special meaning unless otherwise stated, and therefore cannot be understood as limiting the scope of protection of the present application.

[0037] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0038] At the same time, it should be understood that, for ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn according to actual scale.

[0039] In summary, due to the adoption of the above technical features, the present invention has the following advantages and positive effects compared with the prior art:

[0040] First, the volute-less electronic water pump of this application reduces operating noise, has strong adaptability, and improves the competitiveness of the product.

[0041] Secondly, the volute-less electronic water pump of this application reduces the number of parts and material costs, thereby improving the competitiveness of enterprises.

[0042] Third, the booster guide vane of the volute-less electronic water pump in this application is located outside the impeller rotating cavity at the impeller end, and forms a booster cavity with the flow channel plate mounting cavity wall, thereby realizing the booster function when the impeller rotates, and the antifreeze can be pushed to a farther place.

[0043] The preferred embodiments of the invention are merely illustrative of the invention. They do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. These embodiments have been selected and specifically described in this specification to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to make good use of the invention. The invention is limited only by the claims and their full scope and equivalents. The above disclosures are merely preferred embodiments of the invention, but are not intended to limit it. Any equivalent changes and modifications made by those skilled in the art without departing from the spirit and essence of the invention should fall within the protection scope of the invention.

Claims

1. An electronic water pump for a thermal management integrated module, characterized by, The electronic water pump comprises a casing assembly, an impeller assembly and an impeller axial positioning element, the casing assembly comprises a plurality of booster vanes, an impeller rotating cavity, a motor assembly, a shaft, a casing and a connector, the plurality of booster vanes are arranged on the casing at the periphery of the impeller rotating cavity, the booster vanes are arc-shaped pieces, the mounting hole walls of the plurality of booster vanes and the flow channel plate form a booster cavity for boosting pressure; the impeller assembly is sleeved on the shaft and located in the impeller rotating cavity, the impeller of the impeller assembly corresponds to the positions of the plurality of booster vanes; the connector is electrically connected to the motor assembly; the impeller axial positioning element is arranged on the shaft for limiting the impeller assembly.

2. The electronic water pump of the thermal management integrated module of claim 1, wherein, The impeller assembly further comprises a water inlet pipeline part and a rotor part, the water inlet pipeline part is a hollow cylinder, and the water inlet pipeline part corresponds to the water inlet pipeline of the flow channel plate.

3. The electronic water pump of the thermal management integrated module of claim 2, wherein, The casing comprises a radially protruding locking part, the locking part is a piece with a plurality of locking holes, and the locking part locks the flow channel plate through fasteners.

4. The electronic water pump for a thermal management integrated module of claim 3, wherein, The locking part further comprises a positioning pin, and the positioning pin is used for accurately assembling the electronic water pump.

5. The electronic water pump for a thermal management integrated module of claim 4, wherein, The electronic water pump further comprises a casing sealing ring, and the casing sealing ring is arranged on the casing for preventing water seepage.

6. The electronic water pump for a thermal management integrated module of claim 5, wherein, The impeller axial positioning element comprises an end face bearing and an elastic retainer, the end face bearing and the elastic retainer are sequentially sleeved on the shaft, the shaft comprises a recessed part, and the center hole of the elastic retainer abuts against the step of the recessed part.

7. The electronic water pump of the thermal management integrated module of claim 6, wherein, The casing assembly further comprises an axially protruding electric connector, the electric connector is a hollow annular body, the connector is arranged in the electric connector, the outer surface of the electric connector comprises a clamping protrusion, and the clamping protrusion is used for clamping a power supply rack.

8. The electronic water pump for a thermal management integrated module of claim 7, wherein, The plurality of booster vanes, the impeller rotating cavity, the casing and the electric connector are integrally formed.

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