A new stationary cv brazing base

Abstract

The utility model relates to the technical field of new energy automobile heat management especially, it is a kind of new fixed CV brazing base, it is based on computational fluid dynamics to carry out strict topological optimization and parameter optimization, so that inlet and L type outlet have the lowest flow resistance coefficient, the maximization of performance and reliability is realized, by overall rigidity design and partition isolation, base has excellent vibration damping characteristics;Including positioning assembly, support assembly, casing, inlet, L type outlet, check valve body and protruding portion, protruding portion and casing between constitute an overall structure, the upper portion of casing is provided with chamber, inlet is set at casing bottom end and is communicated with chamber, L type outlet is set at protruding portion bottom end, and the top of L type outlet is communicated with inlet side portion, check valve body is installed in chamber interior, check valve body bottom end and inlet are communicated, positioning assembly is set in casing interior, and positioning assembly is used to fix check valve body.

Description

Technical Field

[0001] This utility model relates to the technical field of thermal management of new energy vehicles, and in particular to a novel fixed CV brazing base. Background Technology

[0002] With the increasing complexity of electric vehicle thermal management systems, integrated modules have become the industry mainstream. Cartridge-type check valves are widely used due to their compact structure, rapid response, and high degree of standardization. While traditional installation methods primarily rely on snap rings for fixation, their base designs often fail to adequately consider system-level thermal management, flow resistance optimization, and space utilization efficiency.

[0003] Limitations of existing check valve mounting bases Although the snap ring fixing itself has the advantage of simple assembly, the traditional base design it relies on has the following limitations that are difficult to overcome: Traditional bases have limited functionality and low system integration: they only provide installation points for one-way valves, while complex refrigerant flow paths still require externally or internally machined cross holes, process plugs, and connecting pipes. This results in bulky bases with low functional density, numerous external pipes, and a significantly increased risk of leakage. The "island-like" layout results in poor flow resistance efficiency: due to the lack of global flow channel optimization in the base design, the flow channel connections between various one-way valves contain numerous sharp turns, abrupt changes in cross-section, and lengthy paths. This "island-like" layout generates significant local resistance losses, leading to increased overall system pressure loss, increased compressor power consumption, and decreased energy efficiency ratio. Thermal management blind spots, resulting in reduced energy efficiency: Traditional bases are typically a single metal block, with the high-temperature exhaust passage from the compressor and the low-temperature return passage physically very close. This significant temperature difference creates a highly efficient thermal short circuit through the highly thermally conductive metal base itself, causing high-temperature heat to transfer to the low-temperature zone, increasing the suction temperature, and directly reducing the system's cooling capacity and energy efficiency. Vibration transmission and stress concentration: During vehicle operation, the integral base will transmit vibration and stress from a certain area to the entire system. In addition, stress concentration is prone to occur at the bottom of the snap ring groove and at the intersection of the flow channels. Under long-term pressure cycling and vibration, it may become the origin point of fatigue cracks. Manufacturing and assembly complexity: To machine the complex, interconnected flow channels inside the base, extensive deep-hole cross-drilling is required, along with numerous process plugs for sealing. This not only increases the difficulty and time of machining but also introduces additional potential leakage points. During assembly, multiple check valves need to be press-fitted individually and fitted with snap rings, limiting automation. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a novel fixed CV brazing base that fundamentally simplifies the brazing base architecture. Through rigorous topology and parameter optimization based on computational fluid dynamics, the inlet and L-shaped outlet achieve the lowest flow resistance coefficients, maximizing performance and reliability. Furthermore, through overall rigid design and partitioned isolation, the base possesses excellent vibration damping characteristics.

[0005] This utility model discloses a novel fixed CV brazing base, comprising a positioning assembly, a support assembly, a housing, an inlet, an L-shaped outlet, a one-way valve body, and a protrusion. The protrusion and the housing form an integral structure. A chamber is provided in the upper part of the housing. The inlet is located at the bottom of the housing and communicates with the chamber. The L-shaped outlet is located at the bottom of the protrusion, and the top of the L-shaped outlet communicates with the side of the inlet. The one-way valve body is installed inside the chamber, and its bottom end communicates with the inlet. The positioning assembly is located inside the housing and is used to fix the one-way valve body. The support assembly is located inside the inlet. The support components are used to support the bottom of the one-way valve body; the fluid enters through the bottom of the inlet and exits through the L-shaped outlet. By internalizing the complex flow channels of the inlet and L-shaped outlet into the base, the brazed base architecture is fundamentally simplified. Through rigorous topology and parameter optimization based on computational fluid dynamics, the inlet and L-shaped outlet have the lowest flow resistance coefficient. The shell and protrusion structure have the best stiffness-to-weight ratio and the minimum stress concentration, maximizing performance and reliability. Through overall rigid design and partition isolation, the base has excellent vibration damping characteristics.

[0006] Preferably, the positioning component includes a C-shaped retaining ring, which is embedded in the inner side wall of the cavity, and the bottom end of the C-shaped retaining ring is close to the top of the one-way valve body; by limiting the top of the one-way valve body with the C-shaped retaining ring, the installation stability of the one-way valve body is improved, and the convenience of loading and unloading the one-way valve body is improved.

[0007] Preferably, the support component includes a support frame, which is disposed inside the inlet, with the top of the support frame contacting the bottom of the one-way valve body; the support frame supports the bottom of the one-way valve body, thereby improving the installation stability of the one-way valve body.

[0008] Preferably, the intersection of the inlet and the L-shaped outlet and the bend of the L-shaped outlet are smoothly transitioned; this effectively eliminates stress concentration points and improves the fatigue life of the entire module under vibration and impact conditions.

[0009] Preferably, the housing, inlet, L-shaped outlet, and protrusion are integrally machined using a precision casting process suitable for forming complex internal cavities, and the mounting holes are arranged regularly; this significantly reduces the amount of subsequent machining, especially avoiding the difficult-to-control cross-machining of deep holes. The mounting holes of all one-way valves are arranged regularly on the base, providing a unified insertion benchmark and operating space for automated assembly equipment, greatly improving assembly efficiency and quality consistency.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: after the fluid enters through the bottom of the inlet, it is discharged through the L-shaped outlet. By internalizing the complex flow channels of the inlet and L-shaped outlet into the base, the brazing base structure is fundamentally simplified. Through rigorous topology optimization and parameter optimization based on computational fluid dynamics, the inlet and L-shaped outlet have the lowest flow resistance coefficient. The shell and protrusion structure have the best stiffness-to-weight ratio and the minimum stress concentration, thus maximizing performance and reliability. Through overall rigid design and partition isolation, the base has excellent vibration damping characteristics. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the isometric structure of this utility model; Figure 2 This is an isometric schematic diagram of the shell and inlet structures; Figure 3 This is an isometric schematic diagram of the one-way valve body and C-type snap ring, etc. Figure 4 This is an isometric schematic diagram of the L-shaped outlet and protrusions, etc. Figure 5 It is an isometric schematic diagram of the shell and protrusions and other structures.

[0012] The following are labels in the attached diagram: 1. Housing; 2. Inlet; 3. L-shaped outlet; 4. One-way valve body; 5. C-shaped snap ring; 6. Support frame; 7. Protrusion. Detailed Implementation

[0013] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0014] Example 1 like Figures 1 to 5As shown, a novel fixed CV brazing base of this utility model includes a positioning component, a support component, a housing 1, an inlet 2, an L-shaped outlet 3, a one-way valve body 4, and a protrusion 7. The protrusion 7 and the housing 1 form an integral structure. A chamber is provided on the upper part of the housing 1. The inlet 2 is located at the bottom of the housing 1 and communicates with the chamber. The L-shaped outlet 3 is located at the bottom of the protrusion 7, and the top of the L-shaped outlet 3 communicates with the side of the inlet 2. The one-way valve body 4 is installed inside the chamber, and the bottom of the one-way valve body 4 communicates with the inlet 2. The positioning component is located inside the housing 1 and is used to fix the one-way valve body 4. The support component is located inside the inlet 2 and is used to support the bottom of the one-way valve body 4. like Figure 3 As shown, the positioning component includes a C-shaped retaining ring 5, which is embedded in the inner side wall of the cavity, and the bottom end of the C-shaped retaining ring 5 is close to the top end of the one-way valve body 4. In this embodiment, the fluid enters through the bottom of the inlet 2 and exits through the L-shaped outlet 3. By internalizing the complex flow channels of the inlet 2 and the L-shaped outlet 3 into the base, the brazing base architecture is fundamentally simplified. Through rigorous topology and parameter optimization based on computational fluid dynamics (CFD), the inlet 2 and the L-shaped outlet 3 have the lowest flow resistance coefficient. The structure of the shell 1 and the protrusion 7 has the best stiffness-to-weight ratio and the least stress concentration, thus maximizing performance and reliability. Through overall rigid design and partitioned isolation, the base has excellent vibration damping characteristics.

[0015] Example 2 Based on Embodiment 1, this utility model provides a novel fixed CV brazing base, such as... Figure 3 As shown, the support assembly includes a support frame 6, which is disposed inside the inlet 2, and the top of the support frame 6 contacts the bottom of the one-way valve body 4. like Figure 3 As shown, the intersection of the inlet 2 and the L-shaped outlet 3 and the bend of the L-shaped outlet 3 are smoothly transitioned. like Figure 2 As shown, the housing 1, inlet 2, L-shaped outlet 3 and protrusion 7 are integrally formed using a precision casting process suitable for complex internal cavity forming, and the mounting holes are arranged regularly. In this embodiment, the C-shaped retaining ring 5 limits the top of the one-way valve body 4, thereby improving the installation stability of the one-way valve body 4 and the convenience of loading and unloading the one-way valve body 4. The support frame 6 supports the bottom of the one-way valve body 4, thereby improving the installation firmness of the one-way valve body 4.

[0016] This utility model discloses a novel fixed CV brazing base, in which fluid enters through the bottom end of the inlet 2 and exits through the L-shaped outlet 3 during operation.

[0017] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A novel fixed CV brazing base, characterized in that, It includes a positioning component, a support component, a housing (1), an inlet (2), an L-shaped outlet (3), a one-way valve body (4), and a protrusion (7). The protrusion (7) and the housing (1) form an integral structure. A chamber is provided on the upper part of the housing (1). The inlet (2) is located at the bottom of the housing (1) and communicates with the chamber. The L-shaped outlet (3) is located at the bottom of the protrusion (7), and the top of the L-shaped outlet (3) communicates with the side of the inlet (2). The one-way valve body (4) is installed inside the chamber. The bottom of the one-way valve body (4) communicates with the inlet (2). The positioning component is located inside the housing (1) and is used to fix the one-way valve body (4). The support component is located inside the inlet (2) and is used to support the bottom of the one-way valve body (4).

2. A novel fixed CV brazing base as described in claim 1, characterized in that, The positioning component includes a C-shaped retaining ring (5), which is embedded in the inner side wall of the cavity, and the bottom end of the C-shaped retaining ring (5) is close to the top end of the one-way valve body (4).

3. A novel fixed CV brazing base as described in claim 1, characterized in that, The support assembly includes a support frame (6), which is located inside the inlet (2), and the top of the support frame (6) contacts the bottom of the one-way valve body (4).

4. A novel fixed CV brazing base as described in claim 1, characterized in that, The intersection of the inlet (2) and the L-shaped outlet (3) and the turning point of the L-shaped outlet (3) are smoothly transitioned.

5. A novel fixed CV brazing base as described in claim 1, characterized in that, The shell (1), inlet (2), L-shaped outlet (3) and protrusion (7) are integrally formed using a precision casting process suitable for complex internal cavity forming, and the mounting holes are arranged regularly.

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