Barrel-shaped filter screen and vehicle thermal management system

Abstract

The utility model provides a barrel-shaped filter screen and a vehicle heat management system, the barrel-shaped filter screen comprises a filter screen framework and a filter screen, the filter screen framework comprises an upper fan-shaped frame, a lower fan-shaped frame and a connecting rib, the upper fan-shaped frame and the lower fan-shaped frame are integrally formed, and the connecting rib is used for connecting the upper fan-shaped frame and the lower fan-shaped frame; the filter screen comprises a side screen and a bottom screen; the upper edge of the side net is connected with the upper fan-shaped frame in an injection molding mode, the lower edge of the side net is connected with the lower fan-shaped frame in an injection molding mode, and the side portion of the side net is connected with the connecting rib in an injection molding mode. The bottom net is connected with the lower fan-shaped frame in an injection molding mode. The filter screen is designed in a split mode, the bottom screen is directly cut, the side screen is cut, welded and connected into a barrel shape and then connected with the filter screen framework through an injection molding process, compared with a stamping process, the filter screen is simpler, impact force cannot be transmitted mutually after the side screen and the bottom screen are impacted by media, and therefore deformation cannot occur, and the service life of the filter screen is prolonged. Therefore, the height of the filter screen can be increased, and the overflowing area is increased.

Description

Technical Field

[0001] The present invention belongs to the technical field of filters, and particularly relates to a barrel-shaped filter screen and a vehicle thermal management system. Background Art

[0002] The thermal management system is a crucial component in new energy vehicles. It is mainly responsible for controlling and regulating the temperatures of key components such as the battery, motor, electronic control unit, and passenger compartment to ensure the efficient, safe, and comfortable operation of the vehicle. The drive motor delivers the refrigerant medium to ensure the normal realization of the functions of the thermal management system. The production, storage, and transportation of the refrigerant medium may be contaminated or generate impurities, ultimately resulting in the impairment of the functions of the thermal management system. Therefore, a refrigerant medium filter screen is designed to remove the impurity particles that affect the functions of the thermal management system before the refrigerant medium enters the thermal management system.

[0003] As Figure 7 shown, in the filtering device adopted by the thermal management system, after the filter screen is formed by stamping the mesh cloth, it is connected to the plastic skeleton through an injection molding process, and then is installed on the motor pump body by interference fitting. The main problems existing in the current filtering device are as follows: on the one hand, the filter screen is installed by interference fitting, and there is a risk of falling off due to material creep; on the other hand, during the stamping process of the filter screen, the mesh cloth at the corner positions will be pulled and deformed, resulting in changes in the mesh holes, and it will be deformed after being impacted by the refrigerant medium, so it is difficult to increase its height to improve the flow area. Summary of the Invention

[0004] The purpose of the present invention is to provide a barrel-shaped filter screen and a vehicle thermal management system, which can not only be firmly assembled, but also are not easily deformed by the impact of the refrigerant medium, and can increase its height to increase the flow area.

[0005] To achieve the above purpose, the present invention provides the following technical solution: a barrel-shaped filter screen, including a filter screen skeleton and a filter screen. The filter screen skeleton includes an integrally formed upper sector-shaped frame, a lower sector-shaped frame, and connecting ribs connecting the upper sector-shaped frame and the lower sector-shaped frame; the filter screen includes a side net and a bottom net; the upper edge of the side net is injection-molded and connected to the upper sector-shaped frame, its lower edge is injection-molded and connected to the lower sector-shaped frame, and its side part is injection-molded and connected to the connecting ribs; the bottom net is injection-molded and connected to the lower sector-shaped frame.

[0006] Further, the width of the upper sector-shaped frame is greater than the width of the lower sector-shaped frame.

[0007] Further, a first support rib and a second support rib are arranged in the lower sector-shaped frame. The first support rib is an arc-shaped structure concentric with the lower sector-shaped frame, and the second support rib is arranged crosswise with the first support rib.

[0008] Further, the second support rib is an arc-shaped structure.

[0009] Further, both the upper sector-shaped frame and the lower sector-shaped frame are 180° sector-shaped frames, and an arc-shaped concave structure is provided at their centers.

[0010] The present invention also provides a vehicle thermal management system, which includes a pump body, a housing installed on the pump body, and a barrel-shaped filter screen installed in the housing. The barrel-shaped filter screen is one of the above-mentioned barrel-shaped filter screens; a receiving groove matching the upper sector-shaped frame is provided on the installation surface of the pump body, and a limiting surface for limiting the upper sector-shaped frame installed in the receiving groove is provided on the installation surface of the housing.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] 1) The filter screen in the present invention adopts a split design. The bottom net is directly cut and made, and the side net is cut and then welded into a barrel shape, and then connected to the filter screen skeleton through an injection molding process. Compared with the stamping process, it is simpler. Moreover, after the side net and the bottom net are impacted by the medium, the impact force will not be transmitted to each other, so deformation will not occur. Therefore, the height of the filter screen can be increased, thereby increasing the flow-through area.

[0013] 2) The filter screen skeleton in the present invention is fixedly installed through the receiving groove on the pump body and the limiting surface on the housing, and the firmness is greatly improved compared with the interference fit. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is an assembled three-dimensional view (first perspective) of the pump body and the housing in the present invention;

[0015] Figure 2 is an assembled three-dimensional view (second perspective) of the pump body and the housing in the present invention;

[0016] Figure 3 is Figure 1 the assembled top view of the pump body and the housing shown;

[0017] Figure 4 is Figure 3 the structural cross-sectional view in the A-A direction in (the arrow in the figure indicates the medium flow direction);

[0018] Figure 5 is the structural three-dimensional view of the barrel-shaped filter screen in the present invention (the solid arrow indicates the medium flow direction before filtration, and the hollow arrow indicates the medium flow direction after filtration);

[0019] Figure 6 is the structural exploded view of the barrel-shaped filter screen in the present invention;

[0020] Figure 7It is a three-dimensional structure diagram of a barrel-shaped filter screen in the prior art.

[0021] Reference numerals:

[0022] 100, barrel-shaped filter screen; 1, filter screen skeleton; 1.1, upper sector-shaped frame; 1.2, lower sector-shaped frame; 1.3, connecting rib; 1.4, first support rib; 1.5, second support rib; 2, filter screen; 2.1, side net; 2.2, bottom net; 3, pump body; 3.1, mounting hole; 3.2, outlet; 3.3, receiving groove; 4, housing; 4.1, inlet; 4.2, filtering cavity; 4.3, limiting surface. Specific embodiments

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] As Figures 1 to 6 shown, the present invention provides a vehicle thermal management system, including a pump body 3, a housing 4 mounted on the pump body 3, and a barrel-shaped filter screen 100 mounted in the housing 4.

[0025] The top surface of the pump body 3 is provided with a mounting hole 3.1 for connecting a motor. The bottom surface of the pump body 3 is provided with a fan-shaped receiving groove 3.3, and an outlet 3.2 penetrating through the receiving groove 3.3 is provided in the mounting hole 3.1.

[0026] The top surface of the housing 4 is hermetically connected to the bottom surface of the pump body 3. A filtering cavity 4.2 is provided in the housing 4. The filtering cavity 4.2 penetrates to the top surface of the housing 4, and the barrel-shaped filter screen 100 is mounted in the filtering cavity 4.2. The bottom surface of the housing 4 is provided with an inlet 4.1, and the inlet 4.1 communicates with the filtering cavity 4.2. The position of the bottom surface of the housing 4 at the opening of the filtering cavity 4.2 matches the shape of the receiving groove 3.3 and forms a limiting surface 4.3.

[0027] The barrel-shaped filter screen 100 includes a filter screen 2 skeleton 1 and a filter screen 2. The filter screen 2 skeleton 1 is a plastic skeleton and is made by an injection molding process. The filter screen 2 skeleton 1 includes an integrally formed upper sector-shaped frame 1.1, a lower sector-shaped frame 1.2, and a plurality of connecting ribs 1.3. The connecting ribs 1.3 connect the upper sector-shaped frame 1.1 and the lower sector-shaped frame 1.2. The upper sector-shaped frame 1.1 and the lower sector-shaped frame 1.2 have the same structure, but the width of the upper sector-shaped frame 1.1 is greater than the width of the lower sector-shaped frame 1.2. The outer side surface of the upper sector-shaped frame 1.1 is farther out than the outer side surface of the lower sector-shaped frame 1.2, and their inner side surfaces are vertically aligned.

[0028] The upper sector-shaped frame 1.1 is installed in the receiving groove 3.3, and its bottom surface is restricted by the limiting surface 4.3 and cannot be separated from the receiving groove 3.3. It is more firm than the interference fit installation method of the stamping filter screen 2 and is not easy to separate during long-term use.

[0029] As a preferred example, both the upper sector-shaped frame 1.1 and the lower sector-shaped frame 1.2 are 180° sector-shaped frames, and an arc-shaped concave structure is provided at their centers.

[0030] The filter screen 2 includes a side net 2.1 and a bottom net 2.2. The shape of the bottom net 2.2 is sector-shaped, so as to match the shape of the lower sector-shaped frame 1.2. The bottom net 2.2 is formed by cutting. The side net 2.1 is cut according to the unfolded length of the upper sector-shaped frame 1.1, and then the two ends are welded together to form a barrel-shaped structure. The upper edge of the side net 2.1 is injection-molded and connected to the upper sector-shaped frame 1.1, its lower edge is injection-molded and connected to the lower sector-shaped frame 1.2, and its side part is injection-molded and connected to the connecting rib 1.3; the bottom net 2.2 is injection-molded and connected to the lower sector-shaped frame 1.2.

[0031] The split design enables the bottom net 2.2 not to transfer the acting force to the side net 2.1 after being impacted by the medium. Similarly, the impact force received by the side net 2.1 will not be transferred to the bottom net 2.2 either, so as to ensure that the entire filter screen 2 will not be deformed. Moreover, the filter screen 2 only undergoes cutting and welding during production, and will not cause pulling deformation to the mesh cloth. Since the improved filter screen 2 will not be deformed, the height H of the filter screen 2 can be further increased compared with the height h of the stamping filter screen 2, thereby increasing the flow-through area of the filter screen 2 and reducing the flow resistance of the filter screen 2.

[0032] As a preferred example, a first support rib 1.4 and a second support rib 1.5 are provided in the lower sector-shaped frame 1.2. The first support rib 1.4 is an arc-shaped structure concentric with the lower sector-shaped frame 1.2, and the second support rib 1.5 is arranged crosswise with the first support rib 1.4. Both the first support rib 1.4 and the second support rib 1.5 are injection-molded and connected to the bottom net 2.2, playing a role in supporting the bottom net 2.2 and further enhancing the ability of the bottom net 2.2 to resist the impact of the medium.

[0033] As a preferred example, the second support rib 1.5 is an arc-shaped structure. In this way, the support area for the bottom net 2.2 can be increased.

[0034] For the parts not detailed in the present invention, they are all well-known technologies to those skilled in the art.

[0035] Finally, it should be noted that: the above specific embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified and equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A barrel-shaped filter screen (100), comprising a filter screen (2) frame (1) and a filter screen (2), characterized in that: The filter screen (2) skeleton (1) comprises an integrally formed upper fan-shaped frame (1.1), a lower fan-shaped frame (1.2), and a connecting rib (1.3) connecting the upper fan-shaped frame (1.1) and the lower fan-shaped frame (1.2); the filter screen (2) comprises a side net (2.1) and a bottom net (2.2); the upper edge of the side net (2.1) is connected to the upper fan-shaped frame (1.1) by injection molding, the lower edge of the side net (2.1) is connected to the lower fan-shaped frame (1.2) by injection molding, and the side portion of the side net (2.1) is connected to the connecting rib (1.3) by injection molding; the bottom net (2.2) is connected to the lower fan-shaped frame (1.2) by injection molding.

2. The barrel-shaped filter screen (100) according to claim 1, characterized in that: The width of the upper fan-shaped frame (1.1) is greater than the width of the lower fan-shaped frame (1.2).

3. The barrel-shaped filter screen (100) according to claim 1, characterized in that: The lower fan-shaped frame (1.2) is provided with a first support rib (1.4) and a second support rib (1.5); the first support rib (1.4) is an arc-shaped structure arranged concentrically with the lower fan-shaped frame (1.2); and the second support rib (1.5) is arranged crosswise with the first support rib (1.4).

4. The barrel-shaped filter screen (100) according to claim 3, characterized in that: The second supporting rib (1.5) is an arc-shaped structure.

5. The barrel-shaped filter screen (100) according to claim 4, characterized in that: The upper fan-shaped frame (1.1) and the lower fan-shaped frame (1.2) are both 180° fan-shaped frames, and an arc-shaped concave structure is arranged at the center of the circle.

6. A thermal management system for a vehicle, comprising a pump body (3), a housing (4) mounted on the pump body (3), and a barrel-shaped filter (100) mounted in the housing (4), characterized in that: The barrel-shaped filter screen (100) is a barrel-shaped filter screen (100) as claimed in claim 1; the installation surface of the pump body (3) is provided with a 1.1) and a receiving groove (3.3) matching the receiving groove (3.3), the mounting surface of the housing being provided with a limiting surface (4.3) for limiting the upper fan-shaped frame (1.1) mounted in the receiving groove (3.3).

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