Face blowing air duct assembly structure of vehicle air conditioner

Abstract

The utility model relates to the technical field of vehicle air conditioner design, in particular to a vehicle air conditioner face blowing air duct assembly structure which comprises an air inlet duct, a main pipeline, side pipelines, guide plates and air outlet sections, the main pipeline is arranged at one end of the air inlet duct, the side pipelines are arranged on the two sides of the air inlet duct, and the air outlet sections are arranged on the main pipeline and the side pipelines. According to the vehicle air conditioner face blowing air duct assembly structure, the whole air outlet section uses the gradually-shrinking section as an air flow inlet and then sequentially penetrates through the connecting throat pipe and the gradually-expanding section to be discharged out of the air outlet pipe, air flow stably flowing out of the main pipeline and the side pipeline can be accelerated under the action of the convergent angle of the gradually-shrinking section, and meanwhile static pressure is reduced; after air flow penetrates through the connecting throat pipe to reach a flow velocity peak value, kinetic energy is recycled into static pressure under the action of a divergence angle of the diverging section to enable the air flow to flow out stably, fan energy consumption is reduced, resistance reduction is conducted through a longitudinal microgroove regulation and control boundary layer in the process that the air flow penetrates through the diverging section, vortex is prevented from being generated in a pipeline, and noise is reduced. And the noise generated when the whole air duct is used is reduced.

Description

Technical Field

[0001] This utility model relates to the field of vehicle air conditioning design technology, specifically to the structure of a vehicle air conditioning blowing duct assembly. Background Technology

[0002] The vehicle air conditioning system is a core component of automotive comfort, and it needs to take into account multiple objectives such as cooling / heating efficiency, energy consumption control, space layout, and human-machine interaction. Among them, the vehicle air conditioning face blowing duct assembly is the core component of the air conditioning system that controls the airflow to the face / chest of the occupants. Its structural design directly affects the air delivery efficiency, comfort, and NVH performance.

[0003] To address the design issues of vehicle air conditioning duct assemblies, Chinese Patent Publication No. CN218661241U proposes a vehicle air conditioning duct assembly, comprising: a first air supply assembly, wherein an air distribution fin is provided inside the first air supply assembly, the air distribution fin divides the interior of the first air supply assembly into two independent air supply channels, and an air guide structure is provided at the air outlet of at least one of the two air supply channels. The first side of the air guide structure is connected to the outer wall of the air outlet in the width direction, and the second side of the air guide structure extends toward the plane where the air distribution fin is located. The air guide structure includes an adjacent first air guide surface and a second air guide surface, which are arranged at a preset angle. The first air guide surface and the second air guide surface have different extension lengths along the width direction of the air outlet, and the first air guide surface and the second air guide surface have different inclinations.

[0004] The above-mentioned utility model sets an air guide structure at the air outlet of the air supply channel, and sets the air guide structure as a first air guide surface and a second air guide surface with different structures, so that the air outlet is more uniform. However, the air outlet structure of the entire assembly is relatively simple. The airflow will gradually lose kinetic energy as it flows out of the pipe, resulting in high fan energy consumption. Moreover, the direction adjustment is only achieved by separating the channel with air distribution fins and simple air guide surfaces, which may lead to excessively high local wind speeds or dead zones at the air outlet. The airflow directly impacts the edge of the air guide structure, which can easily generate turbulence noise. Therefore, we propose a vehicle air conditioning blowing duct assembly structure. Utility Model Content

[0005] To solve the above-mentioned technical problems, this application provides a vehicle air conditioning face blowing duct assembly structure, including an air inlet duct, a main duct, side ducts, a guide plate, and an air outlet section. A main duct is provided at one end of the air inlet duct, a guide plate is provided in the main duct, side ducts are provided on both sides of the air inlet duct, and an air outlet section is provided on both the main duct and the side ducts.

[0006] In some embodiments, the air outlet section consists of a tapering section, a connecting throat, a widening section, a longitudinal microgroove, an air outlet pipe, and a docking frame, with one end of the tapering section fixed to the main pipe and the side pipe, respectively.

[0007] In some embodiments, the other end of the tapering section is fixed to one end of the connecting throat, and the other end of the connecting throat is fixed to the expanding section.

[0008] In some embodiments, an air outlet pipe is provided at the end of the gradually widening section away from the connecting throat pipe, and a docking frame is provided on the air outlet pipe.

[0009] In some embodiments, the diffusion angle of the expanding section is 7°, and longitudinal microgrooves are uniformly formed on the inner wall of the expanding section.

[0010] In some embodiments, the convergence angle of the tapering section is 15°, and inclined guide vanes are uniformly provided at the inlet of the tapering section.

[0011] This utility model has at least the following beneficial effects:

[0012] The airflow entering the inlet duct of this invention is guided to the main duct and side duct respectively by the built-in diversion fins, and then enters the outlet section from one end of the main duct and side duct. The entire outlet section uses the converging section as the airflow inlet, and then passes through the connecting throat and the expanding section in sequence before being discharged from the outlet duct. The airflow flowing smoothly out of the main duct and side duct will be accelerated by the convergence angle of the converging section, and the static pressure will be reduced. The airflow reaches the peak velocity when passing through the connecting throat, and then the kinetic energy is recovered into static pressure by the diffusion angle of the expanding section, so that the airflow flows out smoothly, reducing the energy consumption of the fan. During the process of the airflow passing through the expanding section, the boundary layer is controlled by the longitudinal micro-grooves to reduce drag and prevent the generation of eddies in the duct, thereby reducing the noise of the entire duct during use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram showing the position of the guide plate in this utility model;

[0015] Figure 3 This is a partial structural schematic diagram of the present invention;

[0016] Figure 4 for Figure 3 A magnified view of a portion of region A in the middle;

[0017] Figure 5 This is a side view of the air outlet section of this utility model.

[0018] In the diagram: 1-Air inlet duct; 2-Main duct; 3-Side duct; 4-Guide plate; 5-Air outlet section; 51-Converging section; 52-Connecting throat; 53-Expanding section; 54-Longitudinal micro-groove; 55-Air outlet duct; 56-Connecting frame. Detailed Implementation

[0019] 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.

[0020] Example 1:

[0021] Please see Figure 1-5 This utility model provides a technical solution: a vehicle air conditioning blowing duct assembly structure, including an air inlet duct 1, a main duct 2, side ducts 3, a guide plate 4, and an air outlet section 5. The main duct 2 is provided at one end of the air inlet duct 1, and the guide plate 4 is provided in the main duct 2. Side ducts 3 are provided on both sides of the air inlet duct 1, and air outlet sections 5 are provided on both the main duct 2 and the side ducts 3. The guide plate 4 in the main duct 2 is used to guide the airflow and reduce the wind energy loss in the main duct 2.

[0022] The air outlet section 5 consists of a converging section 51, a connecting throat 52, a diverging section 53, longitudinal microgrooves 54, an air outlet duct 55, and a docking frame 56. One end of the converging section 51 is fixed to the main duct 2 and the side duct 3, respectively. The other end of the converging section 51 is fixed to one end of the connecting throat 52, and the other end of the connecting throat 52 is fixed to the diverging section 53. An air outlet duct 55 is provided at the end of the diverging section 53 away from the connecting throat 52, and a docking frame 56 is provided on the air outlet duct 55. The diffusion angle of the diverging section 53 is 7°, and longitudinal microgrooves 54 are evenly distributed on the inner wall of the diverging section 53. The convergence angle of the converging section 51 is 15°. Angled guide vanes are evenly distributed at the inlet of the converging section 51. The angled guide vanes serve as an airflow pretreatment structure at the inlet of the converging section 51, which can solve the turbulence and energy loss problems caused by non-uniform incoming flow and adjust the disordered air intake to circumferential pre-swirl. The airflow is made to fit the converging wall more closely, reducing the generation of separation vortices. The airflow entering the air inlet duct 1 is guided to the main duct 2 and the side duct 3 by the built-in diverter fins. Then, it enters the air outlet section 5 from one end of the main duct 2 and the side duct 3. The entire air outlet section 5 uses the converging section 51 as the airflow inlet. After passing through the connecting throat 52 and the expanding section 53 in sequence, it is discharged from the air outlet duct 55. The airflow flowing smoothly out of the main duct 2 and the side duct 3 will be accelerated by the convergence angle of the converging section 51, and the static pressure will be reduced. The airflow reaches the peak velocity after passing through the connecting throat 52. Then, under the action of the diffusion angle of the expanding section 53, the kinetic energy is recovered into static pressure, so that the airflow flows out smoothly, reducing the energy consumption of the fan. During the process of the airflow passing through the expanding section 53, the boundary layer is regulated by the longitudinal micro-grooves 54 to reduce drag and prevent the generation of vortices in the duct, thus reducing the noise of the entire air duct during use.

[0023] Example 2:

[0024] Please see Figure 1-5 This utility model provides a technical solution: a vehicle air conditioning duct assembly structure, including an air inlet duct 1, a main duct 2, side ducts 3, a guide plate 4, and an air outlet section 5. The main duct 2 is located at one end of the air inlet duct 1, and the guide plate 4 is located within the main duct 2. Side ducts 3 are located on both sides of the air inlet duct 1. Air outlet sections 5 are located on both the main duct 2 and the side ducts 3. The air outlet section 5 consists of a tapering section 51, a connecting throat 52, a widening section 53, longitudinal microgrooves 54, an air outlet pipe 55, and a connecting frame 56. One end of the tapering section 51 is fixed to both the main duct 2 and the side duct 3. The widening section 53 has a diffusion angle of 12°, and longitudinal microgrooves 54 are evenly distributed on the inner wall of the widening section 53. The cross-section of the longitudinal microgrooves 54 is V-shaped, and the convergence angle of the tapering section 51 is 25°. °, at the inlet of the tapering section 51, there are evenly arranged inclined guide vanes with an angle of 15° between the inclined guide vanes and the air duct. The tapering section 51, connecting throat 52, tapering section 53 and air outlet 55 are connected sequentially to the air outlets of the main pipe 2 and the side pipe 3, respectively. By increasing the diffusion angle of the tapering section 53 and the convergence angle of the tapering section 51, the total length of the air outlet section 5 is shortened without changing the cross-sectional area of ​​the main pipe 2 and the side pipe 3. The overall structure is more compact and suitable for use scenarios with limited installation space. At the same time, as the convergence angle of the tapering section 51 increases, the volumetric flow rate per unit cross-section increases, the airflow acceleration effect is stronger, and the air outlet is more concentrated. In addition, the V-shaped longitudinal micro-groove 54 facilitates the discharge of condensate and particulate matter carried in the airflow, reducing the risk of pipe deposition.

[0025] 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 vehicle air conditioning duct assembly, comprising an air inlet duct (1), a main duct (2), a side duct (3), a guide vane (4), and an air outlet section (5), characterized in that: One end of the air inlet duct (1) is provided with a main pipe (2), a guide plate (4) is provided in the main pipe (2), and side pipes (3) are provided on both sides of the air inlet duct (1). Air outlet sections (5) are provided on both the main pipe (2) and the side pipes (3).

2. The vehicle air conditioning vent assembly structure according to claim 1, characterized in that: The air outlet section (5) consists of a tapering section (51), a connecting throat (52), a widening section (53), a longitudinal micro-groove (54), an air outlet pipe (55), and a docking frame (56). One end of the tapering section (51) is fixed to the main pipe (2) and the side pipe (3), respectively.

3. The vehicle air conditioning blowing duct assembly structure according to claim 2, characterized in that: The other end of the tapering section (51) is fixed to one end of the connecting throat (52), and the other end of the connecting throat (52) is fixed to the expanding section (53).

4. The vehicle air conditioning blowing duct assembly structure according to claim 3, characterized in that: An air outlet pipe (55) is provided at the end of the gradually expanding section (53) away from the connecting throat pipe (52), and a docking frame (56) is provided on the air outlet pipe (55).

5. The vehicle air conditioning blowing duct assembly structure according to claim 4, characterized in that: The diffusion angle of the gradually expanding section (53) is 7°, and longitudinal microgrooves (54) are uniformly formed on the inner wall of the gradually expanding section (53).

6. The vehicle air conditioning blowing duct assembly structure according to claim 2, characterized in that: The convergence angle of the tapering section (51) is 15°, and the inlet of the tapering section (51) is uniformly provided with inclined guide vanes.

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