Static pressure cavity air duct and train

Abstract

The static pressure cavity air duct comprises an air duct body composed of an air duct shell, an air inlet is formed in the upper end of the air duct body, air outlets are formed in the lower end of the air duct body, and the air outlets are arranged in a bilateral symmetry mode with the air inlet as the symmetry axis. A plurality of groups of rectification guide vanes perpendicular to the air duct are arranged in the air duct corresponding to the air outlets, and small air outlets are formed among the rectification guide vanes. The air duct for the train roof has the advantages of improving an air flow field in the static pressure cavity of the air duct, reducing air flow resistance and reducing internal turbulence of the static pressure cavity, and can achieve the effects of improving air supply efficiency, reducing energy efficiency loss of an air conditioner, improving comfort of passengers and the like.

Description

Technical Field

[0001] The utility model relates to the field of train air conditioners, and particularly relates to a static pressure chamber air duct and a train. Background Art

[0002] Train air conditioner air ducts are mainly used in air conditioning systems of rail vehicles such as high-speed trains and subways. The air ducts are generally installed on the top of the vehicle. The air processed by the air conditioner unit is transported to the air duct by the air conditioner blower, and the air is sent out from the openings on the bottom plate of the air duct, and then sent into the passenger compartment through the diffusers on both sides of the inner top of the vehicle. The air duct system is an important part of the air conditioner device. Its function is to transport and distribute the processed air to the passenger compartment to obtain a reasonable air flow organization, and at the same time, discharge the dirty air in the passenger compartment to the outside, so that the air parameters in the room meet the design requirements. In addition to providing fresh air for passengers, another function of the train ventilation system is to ensure that the air pressure in the carriage is maintained at a comfortable level for people.

[0003] At present, the main air duct chamber and the static pressure chamber on the train roof air duct are separated by an aluminum thin plate as a partition, and a rectangular notch is prefabricated on the partition as the inlet of the static pressure chamber. The structure is relatively simple. Since the inlet of the static pressure chamber is a rectangular notch with edges and corners, the air flow resistance is relatively large. And because the main air duct blows air horizontally, the air flow entering the static pressure chamber lacks a rectifying structure and it is difficult to reach the ideal state of smooth vertical downward air supply as designed. In addition, the air flow interaction between the inlets causes internal turbulence in the static pressure chamber, resulting in loss of air conditioning efficiency. Summary of the Utility Model

[0004] Aiming at the defects of the above-mentioned existing technologies, the purpose of the utility model is to set a flow guiding structure in the static pressure chamber on the premise of meeting the design installation dimensions and structural strength of the train air duct system, so as to control the air flow direction, improve the air flow state, reduce the internal turbulence of the air duct, and achieve the purposes of improving the air supply efficiency, reducing the loss of air conditioning energy efficiency, and enhancing the comfort of passengers.

[0005] The technical solution of the utility model to solve the above technical problems is: a static pressure chamber air duct, including an air duct composed of an air duct housing. An air inlet is provided at the upper end of the air duct, and an air outlet is provided at the lower end of the air duct. The air outlets are symmetrically arranged left and right with the air inlet as the symmetry axis; a plurality of rectifying guide vanes perpendicular to the air duct are arranged in the air duct corresponding to the air outlets, and small air outlets are formed between the rectifying guide vanes.

[0006] Furthermore, the rectifying guide vanes are fixed in the air duct. The rectifying guide vanes include a horizontal plate A, an arc plate and a vertical plate A connected in sequence. The horizontal plate A is parallel to the air outlet, the convex surface of the arc plate faces the direction of the air inlet, and the vertical plate A is perpendicular to the air outlet.

[0007] Further, a human-shaped flow deflector is provided in the air duct corresponding to the air inlet. The human-shaped flow deflector is arranged in a V-shape with the air inlet as the axis of symmetry. The upper end of the human-shaped flow deflector is bluntly processed, and both ends of the human-shaped flow deflector extend into the air duct.

[0008] Further, both ends of the human-shaped flow deflector are provided with tail plates that extend obliquely upward into the air duct. The height of the outermost end of the tail plate is higher than or level with the height of the cross plate A.

[0009] Further, the human-shaped flow deflector and the tail plates are made of sound-absorbing cotton.

[0010] Further, an L-shaped partition perpendicular to the air duct is provided in the air duct between two adjacent air outlets. The partition includes a cross plate B and a vertical plate B connected together. The vertical plate B is arranged on the side close to the air inlet. The vertical plate B is a perforated plate, and the cross plate B is a sealing plate.

[0011] Further, the partition is fixed in the air duct. The cross plate B is parallel to the air outlet. One end of the cross plate B abuts against the cross plate A of the rectifying guide vane at the outermost end of the previous air outlet. The other end of the cross plate B is on the same vertical line as the starting end of the next air outlet. The lower end of the vertical plate B is connected to one end of the cross plate B, and the upper end of the vertical plate B abuts against the upper inner wall of the air duct.

[0012] Further, the opening length of the air outlet becomes smaller as the distance from the air inlet increases.

[0013] Further, a sealing strip is provided on the air duct housing outside the air inlet.

[0014] A train includes the above-mentioned static pressure chamber air duct.

[0015] The beneficial effects of the present utility model compared with the prior art: The static pressure chamber air duct designed for the train roof in the present utility model has the characteristics of improving the air flow field in the static pressure chamber of the air duct, reducing the air flow resistance, and reducing the internal turbulence of the static pressure chamber, and can achieve the effects of improving the air supply efficiency, reducing the energy consumption of the air conditioner, and enhancing the comfort of passengers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of an embodiment of the present utility model;

[0017] Figure 2 Schematic diagram of the air flow in the air duct of an embodiment of the present utility model;

[0018] Figure 3 Partial enlarged view of an embodiment of the present utility model.

[0019] Reference numerals: 1. air duct housing, 2. air inlet, 3. air outlet, 4. rectifying guide vane, 41. horizontal plate A, 42. arc plate, 43. vertical plate A, 5. human-shaped deflector, 6. tail plate, 8. partition, 81. horizontal plate B, 82. vertical plate B, 9. sealing strip. Detailed implementation manners

[0020] The embodiments of the present utility model will be further described in detail below with reference to the accompanying drawings, but the present embodiments are not used to limit the present utility model. Any similar structures and their similar changes that adopt the present utility model shall fall within the protection scope of the present utility model.

[0021] A train according to an embodiment of the present utility model includes a static pressure chamber air duct. The structure of the static pressure chamber air duct is as shown in the attached Figure 1 figure, and includes an air duct composed of an air duct housing 1. An air inlet 2 is provided at the upper end of the air duct. A sealing strip 9 is provided on the air duct housing 1 outside the air inlet 2 for sealing the air inlet 2. A human-shaped deflector 5 is provided in the air duct corresponding to the air inlet 2 for diverting the air entering the air inlet to both sides and entering the air duct. Specifically, the human-shaped deflector 5 is arranged in a human shape with the air inlet as the axis of symmetry. The upper end of the human-shaped deflector 5 is blunt-treated. The two ends of the human-shaped deflector 5 extend into the air duct, so that the air entering the air duct changes from vertical air to horizontal air. Tail plates 6 that extend obliquely upward into the air duct are provided at the two ends of the human-shaped deflector 5. The outermost end height of the tail plates 6 is higher than or level with the height of the rectifying guide vanes 4, playing a role in converging the air volume. The human-shaped deflector 5 and the tail plates 6 are made of sound-absorbing cotton laid, reducing noise and making the wind speed softer.

[0022] An air outlet 3 is provided at the lower end of the air duct. The air outlets 3 are symmetrically arranged left and right with the air inlet 2 as the axis of symmetry. The opening length of the air outlet 3 becomes smaller as the distance from the air inlet 2 becomes longer. A plurality of groups of rectifying guide vanes 4 perpendicular to the air duct are provided in the air duct corresponding to the air outlet 3. Small air outlets are formed between the rectifying guide vanes 4. The rectifying guide vanes 4 are fixed in the air duct. As Figure 3 shown in the figure, the rectifying guide vane 4 includes a horizontal plate A41, an arc plate 42 and a vertical plate A43 connected in sequence. The horizontal plate A41 is parallel to the air outlet 3. The convex surface of the arc plate 42 faces the direction of the air inlet 2. The vertical plate A43 is perpendicular to the air outlet 3.

[0023] An L-shaped partition 8 perpendicular to the air duct is provided in the air duct between two adjacent air outlets 3. As Figure 3As shown, the partition 8 includes a horizontal plate B81 and a vertical plate B82 connected together. The vertical plate B82 is arranged on the side close to the air inlet 2. The vertical plate B82 is a perforated plate, and the horizontal plate B81 is a sealing plate. The partition 8 is fixed in the air duct. The horizontal plate B81 is parallel to the air outlet 3. One end of the horizontal plate B81 abuts against the horizontal plate A41 of the rectifying guide vane 4 at the very end of the previous air outlet 3. The other end of the horizontal plate B81 is on the same vertical line as the starting end of the next air outlet 3. The lower end of the vertical plate B82 is connected to one end of the horizontal plate B81, and the upper end of the vertical plate B82 abuts against the upper inner wall of the air duct.

[0024] As Figure 2 shown, it is a schematic diagram of the air flow in the air duct. The treated air enters the air duct through the air inlet. By using the settings and cooperation of the human-shaped deflector, the rectifying guide vane, and the partition, the air flow entering the static pressure chamber is rectified, the air flow field in the static pressure chamber of the air duct is optimized, so that the air flow passes through the air outlet of the air duct more smoothly and blows vertically downward; and by using the setting of the partition, the interaction effect between the air flows entering the static pressure chamber is reduced, and the internal turbulence of the static pressure chamber is decreased, making the air supply of the air duct more stable.

[0025] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any change or replacement that can be thought of without creative work should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope defined by the claims.

Claims

1. A static pressure chamber air duct, comprising an air duct housing (1), wherein an air inlet (2) is provided at the upper end of the air duct, and an air outlet (3) is provided at the lower end of the air duct, wherein the air outlet (3) is symmetrically arranged with the air inlet (2) as a symmetry axis; characterized in that: A plurality of groups of rectifying guide vanes (4) perpendicular to the air duct are arranged in the air duct corresponding to the air outlet (3), and a small air outlet is formed between each of the rectifying guide vanes (4).

2. The static pressure chamber air duct according to claim 1, characterized in that: The rectifying guide vane (4) is fixed in the air duct, and comprises a transverse plate A (41), an arc-shaped plate (42) and a vertical plate A (43) which are connected in sequence, the transverse plate A (41) is arranged parallel to the air outlet (3), the convex surface of the arc-shaped plate (42) faces the direction of the air inlet (2), and the vertical plate A (43) is arranged perpendicular to the air outlet (3).

3. The static pressure chamber air duct according to claim 2, characterized in that: A human-shaped guide plate (5) is provided in the air duct corresponding to the air inlet (2), and the human-shaped guide plate (5) is arranged in a herringbone shape with the air inlet as the symmetry axis. The upper end of the human-shaped guide plate (5) is passivated, and both ends of the human-shaped guide plate (5) extend into the air duct.

4. The static pressure chamber air duct according to claim 3, characterized in that: Tail plates (6) extending obliquely upwards into the air duct are provided at both ends of the human-shaped deflector plate (5), and the height of the outermost end of the tail plate (6) is higher than or equal to the height of the horizontal plate A (41).

5. The static pressure chamber air duct according to claim 4, characterized in that: The material of the human-shaped deflector plate (5) and the tail plate (6) is sound-absorbing cotton.

6. The static pressure chamber air duct according to claim 5, characterized in that: An L-shaped partition plate (8) perpendicular to the air duct is provided in the air duct between two adjacent air outlets (3), the partition plate (8) comprising a horizontal plate B (81) and a vertical plate B (82) connected together, the vertical plate B (82) being provided on a side close to the air inlet (2), the vertical plate B (82) being a mesh plate, and the horizontal plate B (81) being a sealing plate.

7. The static pressure chamber air duct according to claim 6, characterized in that: The partition plate (8) is fixed in the air duct, the horizontal plate B (81) is arranged parallel to the air outlet (3), one end of the horizontal plate B (81) abuts against the horizontal plate A (41) of the most distal rectifying guide vane (4) of the previous air outlet (3), the other end of the horizontal plate B (81) is on the same vertical line as the starting end of the next air outlet (3), the lower end of the vertical plate B (82) is connected to one end of the horizontal plate B (81), and the upper end of the vertical plate B (82) abuts against the upper inner wall of the air duct.

8. The static pressure chamber air duct according to claim 7, characterized in that: The opening length of the air outlet (3) decreases as the distance from the air inlet (2) increases.

9. The static pressure chamber air duct according to claim 8, characterized in that: A sealing strip (9) is provided on the air duct housing (1) outside the air inlet (2).

10. A train, characterized in that: It comprises the static pressure chamber air duct as described in any one of claims 1 to 9.

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