A gradually expanding undercarriage guide air pipe structure
Patent Information
- Application Number
- CN202522364555.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-07
- Publication Date
- 2026-08-21
- Estimated Expiration
- 2035-11-07
AI Technical Summary
[0003]传统车底导流风管结构简单，其进气口缺乏高效的气水分离机制，在雨雪天气或高速运行中，大量雨水、融雪极易随气流直接侵入管道内部，这不仅会腐蚀风管构件，更可能导致车载电气设备短路、空调系统性能衰减，并影响车厢内空气品质，存在安全与维护隐患；因此，出现一种车底渐扩式导流风管结构
[0012]与现有技术相比，本实用新型的有益效果是：通过排水管与涡旋导流板的设置，实现了利用离心力原理将气流中水分与杂质进行分离；鸭嘴阀作为最终排水部件，实现了集水的自动排放，具有良好的密封性，能防止外部气流、异物及灰尘的倒灌；连接组件的设置，使鸭嘴阀的安装、检查与更换操作简便，无需拆卸主要管道，装置操作简便高效，有效解决了传统导流风管进气口有雨水的侵入。
Smart Images
Figure CN224660747U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of transportation vehicle technology, specifically relating to a gradually expanding air duct structure under a vehicle. Background Technology
[0002] The undercarriage gradually expanding air duct structure is a key component that has emerged with the development of high-speed rail transit. Its application scenarios are mainly concentrated in modern high-speed trains and subway vehicles, serving the vehicle body ventilation and equipment cooling system. This structure has evolved from a simple air intake duct to a carefully designed structure based on aerodynamic principles. Through its unique gradually expanding cross section, it aims to efficiently manage the complex airflow faced by trains when running at high speeds, thereby achieving smooth air intake, reducing aerodynamic drag and operating energy consumption.
[0003] Traditional under-vehicle air ducts have a simple structure, but their air inlets lack an efficient air-water separation mechanism. In rainy or snowy weather or during high-speed operation, a large amount of rainwater and melted snow can easily enter the duct with the airflow. This can not only corrode the duct components, but may also cause short circuits in on-board electrical equipment, degrade the performance of the air conditioning system, and affect the air quality inside the cabin, posing safety and maintenance hazards. Therefore, a gradually expanding under-vehicle air duct structure has emerged. Utility Model Content
[0004] The purpose of this utility model is to provide a gradually expanding air duct structure under a vehicle, which aims to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: A gradually expanding under-vehicle air duct structure includes, The mounting flange connects to the air inlet pipe on the surface of the mounting flange, the drain assembly connects to the end of the air inlet pipe, the connecting assembly connects to the side wall of the drain assembly, and the duckbill valve is fitted onto the outlet of the connecting assembly. The drainage assembly includes a diffuser connected to the end of the air inlet pipe, a drain pipe connected to the end of the diffuser, a guide plate fixedly installed on the inner wall of the drain pipe, a drain hole opened on the surface of the drain pipe, and a water collection pipe sleeved on the surface of the diffuser.
[0006] In a preferred embodiment of this utility model, the air inlet pipe is connected to one end of the diffuser pipe, and the drain pipe is connected to the other end of the diffuser pipe.
[0007] As a preferred embodiment of this utility model, the guide plate is arranged in a vortex shape, and the surface of the water collection pipe is provided with a water outlet.
[0008] As a preferred embodiment of the present invention, the connecting assembly includes a first flange connected to the surface of the water collection pipe, and bolts inserted into the inner wall of the first flange.
[0009] As a preferred embodiment of the present invention, the connecting assembly further includes a second flange bolted to the surface of the first flange, and a retaining ring fitted onto the surface of the duckbill valve.
[0010] In a preferred embodiment of this utility model, the connecting assembly further includes buckles fixedly connected to both ends of the retaining ring, and the bolts are threadedly connected to the inner walls of the buckles.
[0011] In a preferred embodiment of this utility model, the duckbill valve is sleeved on the surface of the second flange, and the first flange is connected to the inner wall of the outlet of the water collection pipe.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting up the drain pipe and the vortex guide plate, the separation of water and impurities in the airflow is achieved by using the principle of centrifugal force; the duckbill valve, as the final drainage component, realizes the automatic discharge of collected water, has good sealing performance, and can prevent backflow of external airflow, foreign objects and dust; the setting of the connecting components makes the installation, inspection and replacement of the duckbill valve simple, without the need to disassemble the main pipe, the device is simple and efficient to operate, and effectively solves the problem of rainwater intrusion at the air inlet of the traditional guide duct. Attached Figure Description
[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the drainage component structure of this utility model; Figure 3 This is a schematic diagram of the connection structure between the drainage pipe and the guide plate of this utility model; Figure 4 This is a schematic diagram of the connection component structure of this utility model.
[0014] In the diagram: 101, mounting flange; 102, air inlet pipe; 103, drainage assembly; 104, connecting assembly; 105, duckbill valve; 103a, diffuser; 103b, drain pipe; 103c, baffle plate; 103d, drain hole; 103e, water collection pipe; 104a, first flange; 104b, bolt; 104c, second flange; 104d, retaining ring; 104e, snap fastener. Detailed Implementation
[0015] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0016] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0017] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. Example
[0018] Reference Figures 1-4 This is an embodiment of the present invention, which provides a vehicle under-floor gradually expanding airflow duct structure, including, Mounting flange 101, air inlet pipe 102 connected to the surface of mounting flange 101, drain assembly 103 connected to the end of air inlet pipe 102, connecting assembly 104 connected to the side wall of drain assembly 103, and duckbill valve 105 sleeved on the outlet of connecting assembly 104. The drainage assembly 103 includes a diffuser 103a connected to the end of the air inlet pipe 102, a drain pipe 103b connected to the end of the diffuser 103a, a guide plate 103c fixedly installed on the inner wall of the drain pipe 103b, a drain hole 103d opened on the surface of the drain pipe 103b, and a water collection pipe 103e sleeved on the surface of the diffuser 103a.
[0019] Specifically, the air inlet pipe 102 is connected to one end of the diffuser pipe 103a, and the drain pipe 103b is connected to the other end of the diffuser pipe 103a.
[0020] Furthermore, the guide plate 103c is arranged in a vortex shape, and the surface of the water collection pipe 103e is provided with a water outlet.
[0021] The airflow enters the drain pipe 103b and is forced to rotate by the vortex-shaped guide plate 103c inside, forming a high-speed vortex. Under the centrifugal force generated by the vortex, water droplets and solid impurities with a density much greater than air are thrown towards the inner wall of the drain pipe 103b and finally discharged through the drain hole 103d on the wall. Preferably, the connecting assembly 104 includes a first flange 104a communicating with the surface of the water collection pipe 103e, a bolt 104b inserted into the inner wall of the first flange 104a, a second flange 104c connected to the surface of the first flange 104a by the bolt 104b, a retaining ring 104d sleeved on the surface of the duckbill valve 105, and the connecting assembly 104 also includes a buckle 104e fixedly connected to both ends of the retaining ring 104d. The bolt 104b is threadedly connected to the inner wall of the buckle 104e, the duckbill valve 105 is sleeved on the surface of the second flange 104c, and the first flange 104a communicating with the inner wall of the outlet of the water collection pipe 103e.
[0022] It should be noted that the retaining ring 104d has buckles 104e at both ends that are threadedly connected to the bolt 104b, thereby fastening the duckbill valve 105 to the outlet of the second flange 104c. The external water collection pipe 103e collects the liquid, and the collected liquid flows through the outlet of the water collection pipe 103e, through the connecting assembly 104, and is finally automatically discharged by the duckbill valve 105 under the action of gravity.
[0023] During use, the airflow enters the drain pipe 103b and is forced to rotate by the vortex-shaped guide plate 103c inside, forming a high-speed vortex. Under the centrifugal force generated by the vortex, water droplets and solid impurities with a density much greater than that of air are thrown towards the inner wall of the drain pipe 103b and finally discharged through the drain hole 103d on the wall. The liquid is collected by the external water collection pipe 103e. The collected liquid flows through the outlet of the water collection pipe 103e, through the connecting assembly 104, and is finally automatically discharged by the duckbill valve 105 under the action of gravity.
[0024] In summary, by using the drain pipe 103b and the vortex guide plate 103c, the separation of moisture and impurities in the airflow is achieved using the principle of centrifugal force. The duckbill valve 105, as the final drainage component, enables automatic discharge of collected water and has good sealing performance, preventing backflow of external airflow, foreign objects, and dust. The connection component 104 makes the installation, inspection, and replacement of the duckbill valve 105 simple, without the need to disassemble the main pipeline. The device is simple and efficient to operate, effectively solving the problem of rainwater intrusion at the air inlet of traditional guide ducts.
[0025] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.
[0026] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.
[0027] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.
[0028] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A gradually expanding undercarriage air duct structure, characterized in that: include, Mounting flange (101), air inlet pipe (102) connected to the surface of mounting flange (101), drain assembly (103) connected to the end of air inlet pipe (102), connecting assembly (104) connected to the side wall of drain assembly (103), and duckbill valve (105) sleeved on the outlet of connecting assembly (104). The drainage assembly (103) includes a diffuser (103a) connected to the end of the air inlet pipe (102), a drain pipe (103b) connected to the end of the diffuser (103a), a guide plate (103c) fixedly installed on the inner wall of the drain pipe (103b), a drain hole (103d) opened on the surface of the drain pipe (103b), and a water collection pipe (103e) sleeved on the surface of the diffuser (103a).
2. The undercarriage gradually expanding air duct structure according to claim 1, characterized in that: The air inlet pipe (102) is connected to one end of the diffuser pipe (103a), and the drain pipe (103b) is connected to the other end of the diffuser pipe (103a).
3. The undercarriage gradually expanding air duct structure according to claim 2, characterized in that: The guide plate (103c) is arranged in a vortex shape, and the surface of the water collection pipe (103e) is provided with a water outlet.
4. The undercarriage gradually expanding air duct structure according to claim 3, characterized in that: The connection assembly (104) includes a first flange (104a) communicating with the surface of the water collection pipe (103e) and a bolt (104b) inserted into the inner wall of the first flange (104a).
5. The undercarriage gradually expanding air duct structure according to claim 4, characterized in that: The connecting assembly (104) also includes a second flange (104c) connected to the surface of the first flange (104a) by bolts (104b), and a retaining ring (104d) fitted onto the surface of the duckbill valve (105).
6. The undercarriage gradually expanding air duct structure according to claim 5, characterized in that: The connecting assembly (104) further includes buckles (104e) fixedly connected to both ends of the retaining ring (104d), and the bolt (104b) is threadedly connected to the inner wall of the buckle (104e).
7. The undercarriage gradually expanding air duct structure according to claim 6, characterized in that: The duckbill valve (105) is sleeved on the surface of the second flange (104c), and the first flange (104a) is connected to the inner wall of the outlet of the water collection pipe (103e).