Combined pump cover assembly and electronic water pump applying same

Abstract

The utility model discloses a combined pump cover assembly and an electronic water pump using the same, and relates to the technical field of electronic water pumps and parts thereof, the combined pump cover assembly comprises a main pump cover component and at least one auxiliary pump cover component; the main pump cover component and the auxiliary pump cover component are fixedly combined so that a liquid medium flow channel can be defined between the main pump cover component and the auxiliary pump cover component. The utility model mainly solves the problem of how to provide a pump cover with a more ideal 3D configuration for the electronic water pump. According to the pump cover assembly, the impeller cavity of the pump cover assembly is disassembled into two or more parts, and then the parts are spliced and combined, so that the pump cover assembly with a more ideal 3D configuration can be adapted to a real manufacturing process, the difference between simulation data and actual measurement data of the pump cover assembly is reduced, the simulation data of the pump cover assembly has higher credibility, and the reliability of the pump cover assembly is improved. And more possibilities are provided for 3D configuration of the pump cover assembly, and the research and development cycle and the test cycle of the electronic water pump are shortened.

Description

Technical Field

[0001] This utility model relates to the technical field of electronic water pumps and their components, specifically a combined pump cover assembly and an electronic water pump using the same. Background Technology

[0002] Electric water pumps have high output efficiency and can achieve precise flow control. Therefore, they are widely used in automobiles, home appliances and industrial equipment. For example, new energy vehicles are usually equipped with two or more electric water pumps as the power source for the entire cooling system.

[0003] The pump cover (also known as the "pump head") is one of the important components of an electric water pump. In the existing technology, the pump cover of a common electric water pump has an impeller chamber inside, and the pump cover also has an inlet and an outlet that are connected to the impeller chamber.

[0004] The impeller of the electric water pump is housed in the impeller chamber of the pump cover and can rotate in the impeller chamber. The rotating impeller can create a pressure difference in the space of the impeller chamber, thereby driving the liquid medium to be drawn from the inlet into the impeller chamber and, guided by the inner wall of the impeller chamber, to be output from the outlet to the outside of the impeller chamber.

[0005] Therefore, it can be seen that the design of the impeller chamber geometry and / or geometric structure of the pump cover is closely related to the technical indicators of the electric water pump, such as its hydrodynamic performance and noise reduction performance.

[0006] However, due to limitations in manufacturing processes and technology, it is actually impossible to manufacture a pump cover with an ideal 3D configuration. That is, after the electronic water pump is assembled in reality, due to the influence of various differences in the geometry, structure and mechanical fit of each component, the actual technical specifications of the electronic water pump will always have some differences from the original 3D digital model simulation data.

[0007] In conclusion, how to provide a pump cover with a more ideal 3D configuration for electronic water pumps to improve their technical specifications has become one of the urgent problems to be solved. Utility Model Content

[0008] The purpose of this utility model is to provide a combined pump cover assembly and an electronic water pump using the same, which enables the pump cover assembly of the electronic water pump to have a more ideal 3D configuration.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a combined pump cover assembly, comprising a main pump cover component and at least one auxiliary pump cover component; the main pump cover component and the auxiliary pump cover component are fixedly connected to form a liquid medium flow channel between the main pump cover component and the auxiliary pump cover component.

[0010] In the above technical solution, an inlet and an outlet are respectively formed at the main pump cover component and / or the auxiliary pump cover component; both the inlet and the outlet are connected to the liquid medium flow channel.

[0011] In the above technical solution, the liquid medium flow channel has an opening in its radial and / or axial direction; the inlet is connected to the opening of the liquid medium flow channel through the inner space of the main pump cover component; the outlet is located at the end of the liquid medium flow channel.

[0012] In the above technical solution, at least a portion of the inner wall of the main pump cover component is configured as a first guide inner wall; at least a portion of the inner wall of the auxiliary pump cover component is configured as a second guide inner wall; the first guide inner wall of the main pump cover component and the second guide inner wall of the auxiliary pump cover component enclose each other to form the liquid medium flow channel.

[0013] In the above technical solution, the first guide inner wall of the main pump cover component and the second guide inner wall of the auxiliary pump cover component are both arc-shaped surfaces.

[0014] In the above technical solution, the main pump cover component and / or the auxiliary pump cover component have a water outlet guide tongue formed at the water outlet.

[0015] In the above technical solution, an assembly positioning structure is provided between the main pump cover component and the auxiliary pump cover component.

[0016] An electronic water pump includes the aforementioned combined pump cover assembly.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: The combined pump cover assembly and the electronic water pump using it include a main pump cover component and at least one auxiliary pump cover component. The impeller chamber of the pump cover assembly is disassembled into two or more parts and then spliced ​​together, thereby making the 3D configuration of the pump cover assembly more ideal. It can adapt to the actual manufacturing process, reduce the difference between the simulation data and the measured data of the pump cover assembly, make the simulation data of the pump cover assembly more reliable, and provide more possibilities for the 3D configuration of the pump cover assembly, shortening the research and development cycle and testing cycle of the electronic water pump. Attached Figure Description

[0018] Figure 1 This is one of the three-dimensional views of this utility model.

[0019] Figure 2 This is the second perspective view of the present invention.

[0020] Figure 3 This is one of the exploded views of this utility model.

[0021] Figure 4 This is the second exploded view of this utility model.

[0022] Figure 5 This is a cross-sectional view of the present invention.

[0023] The attached figures are labeled as follows: 10, main pump cover component; 101, first guide inner wall; 102, water inlet; 103, water outlet; 104, first water outlet guide tongue; 20, auxiliary pump cover component; 201, second guide inner wall; 202, second water outlet guide tongue; 30, liquid medium flow channel; 301, opening. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This embodiment provides a combined pump cover assembly that can be applied to an electronic water pump as part of the pump housing structure, as well as part of the pump chamber structure and liquid medium flow channel structure, and can perform the functions of water inlet and water outlet of the electronic water pump.

[0026] Please see Figures 1-5 The combined pump cover assembly of this embodiment includes a main pump cover component 10 and at least one auxiliary pump cover component 20.

[0027] The main pump cover component 10 and the auxiliary pump cover component 20 are both integrally injection molded engineering plastic semi-shell components, and have an inner side and an outer side.

[0028] The main pump cover component 10 and the auxiliary pump cover component 20 are fixedly connected to form a liquid medium flow channel 30 between the main pump cover component 10 and the auxiliary pump cover component 20.

[0029] In this embodiment, the auxiliary pump cover component 20 is embedded inside the main pump cover component 10, and the main pump cover component 10 and the auxiliary pump cover component 20 are fixedly combined into one unit by an interference fit, so that there is no need to configure a sealing structure such as a sealing ring between the main pump cover component 10 and the auxiliary pump cover component 20. In other embodiments, the main pump cover component 10 and the auxiliary pump cover component 20 can also be fixed by screws or buckles, and a sealing structure such as a sealing ring can be configured between the main pump cover component 10 and the auxiliary pump cover component 20.

[0030] In this embodiment, only one auxiliary pump cover component 20 is configured; in other embodiments, two, three or more auxiliary pump cover components 20 may be configured to meet the 3D configuration requirements of the liquid medium flow channel 30 and the assembly process requirements of the combined pump cover assembly.

[0031] Specifically, an inlet 102 and an outlet 103 are formed at the main pump cover component 10 and / or the auxiliary pump cover component 20, respectively. In this embodiment, the inlet 102 and the outlet 103 are integrally formed at the main pump cover component 10 and are connected to the short tubular structure features on the inner and outer sides of the main pump cover component 10. The inlet 102 and the outlet 103 are both connected to the liquid medium flow channel 30.

[0032] More specifically, the liquid medium flow channel 30 has an opening 301 in its radial and / or axial direction. In this embodiment, both the main pump cover component 10 and the auxiliary pump cover component 20 have notches on their sides, so that the assembled combined pump cover assembly has an opening 301 in its radial direction in its liquid medium flow channel 30. The inlet 102 is connected to the opening 301 of the liquid medium flow channel 30 through the inner space of the main pump cover component 10. The outlet 103 is located at the end of the liquid medium flow channel 30, that is, the end of the liquid medium flow channel 30 is directly connected to the beginning of the outlet 103.

[0033] Specifically, at least a portion of the inner wall of the main pump cover component 10 is configured as a first guide inner wall 101, see [link to relevant documentation]. Figure 5 In this embodiment, the first guide inner wall 101 is an arc-shaped wall structure feature on the inner side of the main pump cover component 10; at least a portion of the inner wall of the auxiliary pump cover component 20 is configured as the second guide inner wall 201. Please refer to [link to relevant documentation]. Figure 5 In this embodiment, the second guide inner wall 201 is an arc-shaped wall structure feature on the inner side of the auxiliary pump cover component 20; the first guide inner wall 101 of the main pump cover component 10 and the second guide inner wall 201 of the auxiliary pump cover component 20 enclose each other to form a liquid medium flow channel 30.

[0034] Please see Figure 5 Furthermore, the first guide inner wall 101 of the main pump cover component 10 and the second guide inner wall 201 of the auxiliary pump cover component 20 are both arc-shaped surfaces, so that the resistance is minimized when the liquid medium flows through the first guide inner wall 101 of the main pump cover component 10 and the second guide inner wall 201 of the auxiliary pump cover component 20.

[0035] Furthermore, the main pump cover component 10 and / or the auxiliary pump cover component 20 have a water outlet guide tongue formed at the outlet 103; in this embodiment, the main pump cover component 10 has a first water outlet guide tongue 104 formed at the outlet 103, which is an arched structure integrally injection molded with the main pump cover component 10; the auxiliary pump cover component 20 has a second water outlet guide tongue 202 formed at the outlet 103, which is integrally injection molded with the auxiliary pump cover component 20. The integrated injection-molded arched structure features a main pump cover component 10 and an auxiliary pump cover component 20 that are fixedly combined. The first water outlet guide tongue 104 of the main pump cover component 10 and the second water outlet guide tongue 202 of the auxiliary pump cover component 20 are aligned and combined to form a water outlet guide tongue. The water outlet guide tongue is configured at the water outlet 103, which can smoothly guide the liquid medium to the water outlet 103 and reduce the water flow pulsation phenomenon at the water outlet 103, thereby improving the hydrodynamic performance of the combined pump cover assembly.

[0036] Furthermore, an assembly positioning structure is provided between the main pump cover component 10 and the auxiliary pump cover component 20; in some possible embodiments, multiple sets of positioning holes-positioning posts (not shown in the figure) are provided at the main pump cover component 10 and the auxiliary pump cover component 20 to achieve assembly positioning between the main pump cover component 10 and the auxiliary pump cover component 20; in other possible embodiments, the main pump cover component 10 and the auxiliary pump cover component 20 are themselves configured with a shape suitable for assembly positioning (e.g., an eccentric body structure or other irregular structure) to achieve assembly positioning between the main pump cover component 10 and the auxiliary pump cover component 20; in yet another possible embodiment, at least one set of positioning ribs-positioning grooves (not shown in the figure) can also be provided at the main pump cover component 10 and the auxiliary pump cover component 20 to achieve assembly positioning between the main pump cover component 10 and the auxiliary pump cover component 20.

[0037] This embodiment also provides an electronic water pump, which includes the above-described combined pump cover assembly.

[0038] It is understood that in this embodiment, a gap (e.g., 2mm-4mm) should be maintained between the impeller of the electronic water pump and the main pump cover component 10 and the auxiliary pump cover component 20 to ensure that the impeller will not come into contact with the main pump cover component 10 and / or the auxiliary pump cover component 20 during assembly and operation, and to ensure that the liquid medium driven by the impeller can easily enter the liquid medium flow channel 30 through the opening 301.

[0039] In some other possible embodiments, the impeller of the electric water pump can enter the opening 301 of the liquid medium flow channel 30, that is, a part of the impeller of the electric water pump is located in the liquid medium flow channel 30. In this case, the impeller should be placed into the main pump cover component 10 first, and then the auxiliary pump cover component 20 should be assembled.

[0040] The combined pump cover assembly and the electronic water pump using it in this embodiment include a main pump cover component 10 and at least one auxiliary pump cover component 20. The impeller chamber of the pump cover assembly is disassembled into two or more parts and then spliced ​​together, thereby making the pump cover assembly with a more ideal 3D configuration. This makes it suitable for real manufacturing processes, reduces the difference between the simulation data and the measured data of the pump cover assembly, makes the simulation data of the pump cover assembly more reliable, and provides more possibilities for the 3D configuration of the pump cover assembly, shortening the research and development cycle and testing cycle of the electronic water pump.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A combination pump cover assembly comprising: The assembly comprises a main pump cover member and at least one auxiliary pump cover member; The main pump cover member is fixedly combined with the auxiliary pump cover member to enclose a liquid medium flow channel between the main pump cover member and the auxiliary pump cover member.

2. The combination pump cover assembly of claim 1, wherein The main pump cover member and / or the auxiliary pump cover member is respectively provided with a water inlet and a water outlet; The water inlet and the water outlet are both in communication with the liquid medium flow channel.

3. The combination pump cover assembly of claim 2, wherein, The liquid medium flow channel is provided with an opening in a radial direction and / or an axial direction thereof; The water inlet is communicated to the opening of the liquid medium flow channel through an inner space of the main pump cover member; The water outlet is located at an end of the liquid medium flow channel.

4. The combination pump cover assembly of any of claims 1-3, wherein, At least a part of an inner wall of the main pump cover member is configured as a first guide inner wall; At least a part of an inner wall of the auxiliary pump cover member is configured as a second guide inner wall; The first guide inner wall of the main pump cover member and the second guide inner wall of the auxiliary pump cover member enclose the liquid medium flow channel.

5. The combination pump cover assembly of claim 4, wherein, The first guide inner wall of the main pump cover member and the second guide inner wall of the auxiliary pump cover member are both arc surfaces.

6. The combination pump cover assembly of claim 2 or 3, wherein, The main pump cover member and / or the auxiliary pump cover member is provided with a water outlet guide partition tongue at the water outlet.

7. The combination pump cover assembly of any of claims 1-3, wherein An assembly positioning structure is arranged between the main pump cover member and the auxiliary pump cover member.

8. An electronic water pump characterized by The assembly comprises the combined pump cover assembly of any one of claims 1-7.

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