Electronic water pump of thermal management integrated module

Abstract

The utility model relates to an electronic water pump of a thermal management integration 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 automotive thermal management, and particularly to an electric water pump for a thermal management integrated module installed in an automotive thermal management system. Background Art

[0002] With the development of technology and the progress of science, automotive products are changing with each passing day, and higher requirements are also put forward for products. Automotive components are an important area for China's automotive industry to participate in globalization. In response to the rapid development of electronic technology and its extensive application in the automotive industry, and the rapid development of the automotive industry towards electrification and intelligence, the thermal management system is becoming increasingly important for the endurance, safety, and comfort of the whole vehicle. The requirements for thermal management of the whole vehicle are also getting higher and higher. The thermal management integrated module can achieve precise management of thermal energy for different energy-consuming parts, ensuring that each energy-consuming component is at the optimal working temperature.

[0003] In the automotive thermal management integrated module, the electric water pump is the power source for the flow of the cooling medium (such as antifreeze). The electric 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 applications, there are gaps between the volute and the wall of the water pump installation hole of the flow channel plate, and there is also a situation where the water outlet of the volute is misaligned with the water inlet of the flow channel plate, resulting in a reduction in hydraulic performance and an increase in noise.

[0004] In some thermal management integrated modules, although a volute-less electric water pump is adopted, in actual applications, only the volute is integrated on the flow channel plate. The flow channel plate needs to be specially made, with poor versatility, and there are special requirements for the material of the flow channel plate, resulting in a high manufacturing cost. If the volute is not integrated on the flow channel plate, the water pump installation hole on the flow channel plate is a cylindrical cavity, which does not have a pressurizing effect. If a volute water pump is directly installed, the performance of the water pump cannot be satisfied.

[0005] Therefore, there is still room for improvement in the electric water pump of the prior art. Summary of the Utility Model

[0006] The purpose of the present utility model is to provide a volute-less electric water pump for a thermal management integrated module installed in an automotive thermal management system, which can meet the requirements of the water pump performance and low noise of the thermal management integrated module without changing the structure and material of the existing flow channel plate of the thermal management integrated module, so as to solve the technical problems of the prior art.

[0007] To achieve the above object, the present application provides an electric water pump for a thermal management integrated module. The electric water pump includes a housing assembly, an impeller assembly, and an impeller axial positioning element. The housing assembly includes a plurality of booster guide vanes, an impeller rotating cavity, a motor assembly, a machine shaft, a housing, and a connector. The plurality of booster guide vanes are arranged on the housing outside the impeller rotating cavity. The booster guide vanes are arc-shaped plates. The plurality of booster guide vanes and the mounting hole walls of the flow channel plate form a booster chamber for boosting pressure. The impeller assembly is sleeved on the machine shaft and is located in the impeller rotating cavity. The impeller of the impeller assembly corresponds to the positions of the plurality of booster guide vanes. The connector is electrically connected to the motor assembly. The impeller axial positioning element is arranged on the machine shaft to limit the impeller assembly.

[0008] According to the electric water pump of the thermal management integrated module in a preferred embodiment of the present application, the impeller assembly further includes a water inlet pipe portion and a rotor portion. The water inlet pipe portion is a hollow cylinder, and the water inlet pipe portion corresponds to the water inlet pipeline of the flow channel plate.

[0009] According to the electric water pump of the thermal management integrated module in a preferred embodiment of the present application, the housing includes a radially protruding locking portion. The locking portion is a plate provided with a plurality of locking holes. The locking portion locks the flow channel plate through fasteners.

[0010] According to the electric water pump of the thermal management integrated module in a preferred embodiment of the present application, the locking portion further includes a positioning pin, and the positioning pin is used for accurately assembling the electric water pump.

[0011] According to the electric water pump of the thermal management integrated module in a preferred embodiment of the present application, the electric water pump further includes a housing sealing ring. The housing sealing ring is arranged on the housing to prevent water seepage.

[0012] According to the electric water pump of the thermal management integrated module in a preferred embodiment of the present application, the impeller axial positioning element includes a face bearing and a snap ring. The face bearing and the snap ring are sequentially sleeved and connected on the machine shaft. The machine shaft includes a groove portion, and the central hole of the snap ring abuts against the step of the groove portion.

[0013] According to the electric water pump of the thermal management integrated module in a preferred embodiment of the present application, the housing assembly further includes an axially protruding electrical connector. The electrical connector is a hollow ring body. The connector is arranged in the electrical connector. The outer surface of the electrical connector includes a clamping protrusion, and the clamping protrusion is used for clamping the power plug holder.

[0014] According to the electric water pump of the thermal management integrated module in a preferred embodiment of the present application, the plurality of booster guide vanes, the impeller rotating cavity, the housing, and the electrical connector are integrally formed.

[0015] The technical solution of this application improves the electric water pump of the existing automotive thermal management system, and designs a volute-less electric water pump with high versatility that meets the water pump performance and low-noise requirements of the thermal management integration module. Without changing the structure and material of the flow channel plate of the existing thermal management integration module, it is directly installed on the flow channel plate, using the flow channel plate instead of the volute to reduce material costs. There is no misalignment between the volute water outlet and the flow channel plate water inlet, ensuring hydraulic performance and low noise. In addition, a booster guide vane is designed. The booster guide vane is located outside the impeller rotation cavity at the impeller end and cooperates with the wall of the installation hole of the flow channel plate to form a booster cavity. Thus, when the impeller rotates, the boosting function is realized, and the antifreeze can be pushed to a farther place.

[0016] Compared with the prior art, this application has the following advantages:

[0017] First, the volute-less electric water pump of this application reduces the operating noise, has strong adaptability, and improves the competitiveness of the product;

[0018] Second, the volute-less electric water pump of this application reduces the number of parts and material costs, and improves the competitiveness of the enterprise;

[0019] Third, the booster guide vane of the volute-less electric water pump of this application is located outside the impeller rotation cavity at the impeller end and cooperates with the wall of the installation hole of the flow channel plate to form a booster cavity. Thus, when the impeller rotates, the boosting function is realized, and the antifreeze can be pushed to a farther place.

[0020] Of course, when implementing any specific embodiment of the content of this application, it does not necessarily have all the above technical effects at the same time. Brief Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the electric water pump of this application;

[0022] Figure 2 It is an exploded schematic diagram of the electric water pump of this application;

[0023] Figure 3 For Figure 1 the top view schematic diagram;

[0024] Figure 4 It is a three-dimensional schematic diagram of the electric water pump of this application;

[0025] Figure 5 It is a sectional schematic diagram of the electric water pump of this application. Detailed Description of the Embodiments

[0026] The following specifically describes this application in conjunction with the drawings.

[0027] Please refer to both Figure 1 and Figure 2Schematic diagram of the electric water pump and the explosion diagram of the present application. The electric water pump of the thermal management integrated module of the present application is applied to a vehicle and is the power source for the flow of the cooling medium. The electric water pump of the present application is a volute-less electric water pump. Without changing the structure and material of the flow channel plate of the existing thermal management integrated module, it can meet the requirements of the water pump performance and low noise of the thermal management integrated module. Moreover, a booster guide vane is designed. The booster guide vane is located outside the impeller rotation cavity at the impeller end and cooperates with the installation cavity wall of the flow channel plate to form a booster cavity. Thus, when the impeller rotates, the boosting function is realized, and the cooling medium (such as antifreeze) can be pushed to a farther place.

[0028] Please also refer to Figure 3 、 Figure 4 and Figure 5 ,The electric water pump described in the present application includes a housing assembly 10, an impeller assembly 20, and an impeller axial positioning element 40. Among them, the housing assembly 10 includes a plurality of booster guide vanes 11, an impeller rotation cavity 12, a motor assembly 13, a machine shaft 14, a housing 15, and a connector 16. Figure 4 Among them, the plurality of booster guide vanes 11 are arranged on the housing 15 outside the impeller rotation cavity 12. The booster guide vanes 11 are arc-shaped plates. The plurality of booster guide vanes 11 and the installation cavity wall of the flow channel plate form a booster cavity for boosting. Thus, when the impeller assembly 20 rotates, the boosting function is realized. In the embodiment of the present application, the number of the booster guide vanes 11 is 8, but it cannot be used to limit the present application. Whether there are a few more or a few less, as long as the number can cooperate with the installation cavity wall of the flow channel plate to achieve the boosting function, it should be within the protection scope of the present application. The impeller assembly 20 is sleeved on the machine shaft 14 and partially located in the impeller rotation cavity 12. The impeller 21 of the impeller assembly 20 corresponds to the positions of the plurality of booster guide vanes 11. During operation, the impeller 21 rotates to axially move the cooling medium (such as antifreeze) into the impeller 21, and then the cooling medium is thrown out through the impeller 21 and radially moves through the booster cavity formed by the booster guide vanes 11 and the installation cavity wall of the flow channel plate and flows out. Due to the effect of the booster cavity, the cooling medium (such as antifreeze) can be pushed to a farther place.

[0029] In addition, the connector 16 is electrically connected to the motor assembly 13 to control the opening and closing of the motor assembly 13. The impeller axial positioning element 40 is arranged on the machine shaft 14 to limit the impeller assembly 20. The impeller assembly 20 further includes a water inlet pipe part 22 and a rotor part 23. The water inlet pipe part 22 is a hollow cylinder, and the water inlet pipe part 22 corresponds to the water inlet pipeline of the flow channel plate. When the impeller 21 rotates under the drive of the rotor part 23 to form a suction force, the cooling medium (such as antifreeze) axially moves through the water inlet pipe part 22 and enters the impeller 21.

[0030] Please refer to Figure 4Schematic three-dimensional view of the electric water pump of the present application. The housing 15 includes 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 it should not be used to limit the present application. Whether there are more or fewer, as long as the number can ensure a stable connection, it should be within the protection scope of the present application. The locking portion 151 is locked to the flow channel plate by fasteners. The flow channel plate is provided with through holes at positions corresponding to the locking holes 152. The fasteners pass through these two through holes to lock the locking portion 151 and the flow channel plate, that is, to lock the electric water pump to the flow channel plate. In addition, the locking portion 151 further includes 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. The positioning pin 153 is used for accurately assembling the electric water pump.

[0031] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 5 , the electric water pump further includes a housing sealing ring 30. The housing sealing ring 30 is arranged on the housing 15 to prevent water seepage. Figure 1 In, the housing sealing ring 30 is located on the surface of the locking portion 151 facing the pressurizing guide vane 11. After the locking portion 151 is locked to the flow channel plate by fasteners, due to the presence of the housing sealing ring 30, the cooling medium (such as antifreeze) passing through the pressurizing guide vane 11 will not flow out from the gap between the locking portion 151 and the flow channel plate, ensuring the sealing performance of the pressurizing chamber.

[0032] Please refer to Figure 2 、 Figure 4 and Figure 5, the impeller axial positioning element 40 includes a face bearing 41 and an elastic retaining ring 42. The face bearing 41 and the elastic retaining ring 42 are sequentially sleeved and connected to the machine shaft 14. The face bearing 41 is a circular sheet body with a central through hole including at least one straight segment. At the place where the circular column of the machine shaft 14 corresponds to the at least one straight segment, at least one straight notch is provided. After the face bearing 41 is sleeved and connected to the machine shaft 14, due to the effect of the straight segment, the face bearing 41 will not rotate; in addition, the elastic retaining ring 42 is a sheet body with a flat outer ring surface and a circular arc inner ring surface; the machine shaft 14 includes a groove portion 141. The central hole of the elastic retaining ring 42 abuts and connects to the step of the groove portion 141. After assembly, there is a gap between the lower surface of the face bearing 41 and the impeller assembly 20 which is also sleeved on the machine shaft 14. The circular arc inner ring surface of the elastic retaining ring 42 abuts against the step of the groove portion 141 to present a clamped state. The flat outer ring surface of the elastic retaining ring 42 abuts and connects to the upper surface of the face bearing 41. When receiving the upward force from the impeller assembly 20, the elastic force of the circular arc inner ring surface resists this upward force so that the impeller assembly 20 can be firmly fixed on the machine shaft 14.

[0033] As Figure 5 shown, the housing assembly 10 further includes an axially protruding electrical connector 17. The electrical connector 17 is a hollow annular body. The plug 16 is arranged in the electrical connector 17. The outer surface of the electrical connector 17 includes a clamping protrusion 171. The clamping protrusion 171 is used to clamp the power plug holder. The power plug holder provides external power. The waterproof function can be realized between the electrical connector 17 and the power plug holder through a waterproof wire harness plug structure. In addition, Figure 5 it can be seen from

[0034] In summary, the present application is an electronic water pump for a thermal management integrated module installed in the thermal management system of an automobile. The electronic water pump has no volute and does not need to integrate a volute on the counter part flow channel plate. It can be directly assembled on the flow channel plate of the vehicle, and a pressurization cavity is formed by using the installation cavity wall of the flow channel plate and the booster guide vane 11. When the impeller 21 rotates, the pressurization function is realized, and the cooling medium (such as antifreeze) can be pushed to a farther place. Since there is no volute, the electronic water pump of the present application reduces the number of parts and the material cost, and reduces the product noise. In addition, the design of the pressurization cavity better improves the pushing function of the electronic water pump of the present application.

[0035] It should be noted that using words such as "first" and "second" to limit the components is only for the convenience of distinguishing the corresponding components. Without otherwise stating, the above words have no special meaning, so they cannot be understood as a limitation to the protection scope of the present application.

[0036] In the description of the present application, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description. Without contrary instructions, these orientation words 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. Therefore, it should not be construed as a limitation on the protection scope of the present application; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0037] At the same time, it should be understood that for the convenience of description, the dimensions of each part shown in the drawings are not drawn according to the actual proportional relationship.

[0038] Compared with the prior art, the present application has the following advantages:

[0039] First, the volute-less electric water pump of the present application reduces the running noise, has strong adaptability, and improves the competitiveness of the product;

[0040] Second, the volute-less electric water pump of the present application reduces the number of parts and material costs, and improves the competitiveness of the enterprise;

[0041] Third, the boosting guide vane of the volute-less electric water pump of the present application is located outside the impeller rotation cavity at the impeller end, and cooperates with the installation hole wall of the flow channel plate to form a boosting cavity. Thus, when the impeller rotates, the boosting function is realized, and the antifreeze can be pushed to a farther place.

[0042] The above are only several specific embodiments of the present application disclosed, but the present application is not limited thereto. Any change that can be thought of by those skilled in the art should fall within the protection scope of the present application.

Claims

1. An electronic water pump with a thermal management integrated module, characterized in that: The electronic water pump includes a casing assembly, an impeller assembly and an impeller axial positioning element. The casing assembly includes a plurality of boost guide vanes, an impeller rotating cavity, a motor assembly, a crankshaft, a casing and a connector. The plurality of boost guide vanes are arranged on the casing outside the impeller rotating cavity. The boost guide vanes are arc-shaped sheets. The plurality of boost guide vanes and the mounting hole wall of the flow channel plate form a boost cavity for boosting. The impeller assembly is sleeved on the crankshaft and located in the impeller rotating cavity. The impeller of the impeller assembly corresponds to the position of the plurality of boost guide vanes. The connector is electrically connected to the motor assembly. The impeller axial positioning element is arranged on the crankshaft for limiting the impeller assembly.

2. The electronic water pump of the thermal management integrated module according to claim 1, characterized in that: The impeller assembly further comprises a water inlet pipe portion and a rotor portion. The water inlet pipe portion is a hollow cylinder, and the water inlet pipe portion corresponds to the water inlet pipeline of the flow channel plate.

3. The electronic water pump of the thermal management integrated module according to claim 2, characterized in that: The housing comprises a radially protruding locking portion, which is a sheet body with a plurality of locking holes, and the locking portion locks the flow channel plate through a fastener.

4. The electronic water pump of the thermal management integrated module according to claim 3, characterized in that: The locking portion further comprises a positioning pin, and the positioning pin is used for accurately assembling the electronic water pump.

5. The electronic water pump of the thermal management integrated module according to claim 4, characterized in that: The electronic water pump further comprises a casing sealing ring, which is arranged on the casing to prevent water seepage.

6. The electronic water pump of the thermal management integrated module according to claim 5, characterized in that: The impeller axial positioning element includes an end bearing and an elastic retaining ring, which are sequentially sleeved and connected to the machine shaft. The machine shaft includes a groove portion, and the center hole of the elastic retaining ring abuts against a step connected to the groove portion.

7. The electronic water pump of the thermal management integrated module according to claim 6, characterized in that: The housing assembly also includes an axially protruding electrical connector, which is a hollow annular body. The connector is arranged in the electrical connector, and the outer surface of the electrical connector includes a latching protrusion, which is used to latch the power socket.

8. The electronic water pump of the thermal management integrated module according to claim 7, characterized in that: The plurality of boost guide vanes, the impeller rotating cavity, the casing and the electrical connector are integrally formed.

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