A shelter ventilation duct

Abstract

The utility model relates to the field of square cabin ventilation, specifically relates to a square cabin ventilation pipeline, including the casing, the casing is divided into main air duct and auxiliary air duct, one end of main air duct and auxiliary air duct is equipped with same air inlet, the first air outlet is to one end of main air duct away from air inlet, the second air outlet is to one end of auxiliary air duct away from air inlet, the first air outlet and the second air outlet are all special-shaped interfaces, and the first air outlet and the second air outlet are angular staggered settings, one end of auxiliary air duct close to air inlet is equipped with the pivot, and the pivot is fixedly connected with swing leaf, and one end of pivot projects out of casing and is connected with locking structure, locking structure controls swing leaf to open or close the air inlet of auxiliary air duct, the utility model divides and sets up into main air duct and auxiliary air duct with air duct, and controls the air volume size of auxiliary air duct, satisfies the requirement of ventilation in different air duct, realizes the ventilation mode of same entrance, different outlet, is suitable for the ventilation pipeline design of special-shaped cabin body.

Description

Technical Field

[0001] This utility model relates to the field of cabin ventilation, specifically to a cabin ventilation duct. Background Technology

[0002] Prefabricated modular shelters (MDSs) are typically designed with a rational air duct structure. However, existing conventional air duct structures can generally only achieve a single ventilation function, and the cross-sectional area of ​​the vents is fixed, making it impossible to adjust the airflow. Especially in irregularly shaped MDSs, the interfaces between the air ducts and the shelter are also irregularly shaped, with multiple interfaces in different positions and directions, and some interfaces even need to be opened intermittently. For example, when ventilating an irregularly shaped shelter, some vents need to be kept open, while others only need to be opened after the internal temperature reaches a certain threshold. This places higher design requirements on the ventilation ducts. Utility Model Content

[0003] The purpose of this utility model is to overcome the defects of the existing technology and propose a cabin ventilation duct. Through reasonable structural design, an auxiliary air duct is added without changing the air supply equipment, and the air volume of the auxiliary air duct is adjusted.

[0004] The solution is a container ventilation duct, comprising a shell, characterized in that the shell is divided into a main air duct and an auxiliary air duct, with the same air inlet at one end of the main air duct and the auxiliary air duct; the end of the main air duct opposite to the air inlet is a first air outlet, and the end of the auxiliary air duct opposite to the air inlet is a second air outlet; both the first and second air outlets are irregularly shaped interfaces, and are arranged at an angle to each other; the auxiliary air duct has a rotating shaft at the end near the air inlet, with a swing blade fixedly connected to the rotating shaft; one end of the rotating shaft extends out of the shell and is connected to a locking structure; the locking structure controls the swing blade to open or close the air inlet of the auxiliary air duct.

[0005] Preferably, the main air duct and the auxiliary air duct have rectangular or rectangular cross sections in the longitudinal direction.

[0006] Preferably, the lower end of the auxiliary air duct is provided with a recessed portion, and the recessed portion and the air inlet are connected by an arc-shaped transition, and the recessed portion and the bottom surface of the auxiliary air duct are also connected by an arc-shaped transition.

[0007] Preferably, the wind direction changing section of the auxiliary air duct is provided with an arc-shaped corner.

[0008] Preferably, the locking structure includes a pin; a mounting bracket is fixedly provided on the outer side of the housing, the rotating shaft passes through the mounting bracket and is fixedly connected to a disc, the disc has several holes evenly distributed around its circumference, the mounting bracket has holes corresponding to the disc, and the pin is inserted into the corresponding holes of the disc and the mounting bracket.

[0009] Preferably, the mounting bracket has a U-shaped structure, with a plate fixedly mounted on the protruding part in the middle of the mounting bracket, and the plate having insertion holes corresponding to the mounting bracket.

[0010] Preferably, the locking structure is an electric clutch, with one end of the electric clutch connected to a rotating shaft and the other end connected to a motor.

[0011] Preferably, the maximum opening position of the swing blade does not obstruct the air inlet of the main air duct.

[0012] Beneficial effects:

[0013] 1. This utility model divides the air duct into a main air duct and an auxiliary air duct, and controls the air volume of the auxiliary air duct to meet the ventilation requirements of different air ducts, realize the ventilation mode of the same inlet and different outlets, and is suitable for the ventilation duct design of irregularly shaped cabins;

[0014] 2. During the adjustment of the auxiliary air duct air volume, the position of the swing blades controlling the air volume can be locked to ensure that each air duct can maintain a stable air volume under the required conditions. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the location of the second air outlet of this utility model. The auxiliary air duct in the diagram is in a closed state.

[0018] Figure 3 This is a schematic diagram of the arc-shaped corner of this utility model;

[0019] Figure 4 This is a schematic diagram of the locking structure of this utility model.

[0020] In the diagram: 1. Housing; 2. Air inlet; 3. Main air duct; 5. Rotating shaft; 6. Oscillating blade; 7. Auxiliary air duct; 8. Locking structure; 9. First air outlet; 10. Second air outlet; 11. Recessed section; 12. Arc-shaped corner; 801. Disc; 802. Pin; 803. Mounting bracket; 804. Plate; 805. Socket. Detailed Implementation

[0021] 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.

[0022] like Figures 1 to 4 As shown, a ventilation duct for a modular shelter includes a shell 1. The shell 1 is divided into a main air duct 3 and an auxiliary air duct 7. Both the main air duct 3 and the auxiliary air duct 7 have the same air inlet 2 at one end, saving on air supply equipment. The end of the main air duct 3 facing away from the air inlet 2 is a first air outlet 9, and the end of the auxiliary air duct 7 facing away from the air inlet 2 is a second air outlet 10. Both the first air outlet 9 and the second air outlet 10 are irregularly shaped interfaces, the shape of which is determined according to the specific shape of the modular shelter. The connection positions and shapes are determined, and the first air outlet 9 and the second air outlet 10 are arranged at an angle and staggered. The main air duct 3 and the auxiliary air duct 7 are connected at different positions, prioritizing ensuring that the axis of the main air duct 3 is straight to ensure smooth air intake. The auxiliary air duct 7 has a rotating shaft 5 near the air inlet 2, and an oscillating blade 6 is fixedly connected to the rotating shaft 5. One end of the rotating shaft 5 extends out of the housing 1 and is connected to a locking structure 8. The locking structure 8 controls the oscillating blade 6 to open or close the air inlet 2 of the auxiliary air duct 7. The locking structure 8 controls the rotation angle of the rotating shaft 5. As the rotating shaft 5 drives the oscillating blade 6 to gradually open, the air intake of the auxiliary air duct 7 also gradually increases, thereby adjusting the air intake of the auxiliary air duct 7.

[0023] The main air duct 3 and the auxiliary air duct 7 have rectangular or near-rectangular cross sections along their length. For irregularly shaped cabins, the circular cross-section air ducts commonly used in the prior art are not convenient for dividing the main air duct 3 and the auxiliary air duct 7. There is also a problem of difficulty in sealing the circular cross-section air duct with the components passing through the air duct shell 1. Therefore, rectangular or near-rectangular cross-section air ducts are used to optimize the air duct structure and reduce manufacturing difficulty.

[0024] The lower end of the auxiliary air duct 7 is provided with a recessed section 11, which has an arc-shaped transition with the air inlet 2 and the bottom surface of the auxiliary air duct 7. Since the auxiliary air duct 7 shares the air inlet end of the shell 1 with the main air duct 3, the auxiliary air duct 7 is opened on the basis of ensuring the air intake of the main air duct 3. The air inlet 2 of the auxiliary air duct 7 will be smaller than the air inlet 2 of the main air duct 3. The purpose of setting the recessed section 11 is to increase the internal air intake area of ​​the auxiliary air duct 7. Under the condition of a constant air intake velocity, increasing the internal area of ​​the auxiliary air duct 7 can increase the air intake flow of the auxiliary air duct 7. The connection between the recessed section 11 and the air inlet 2 and the ground of the shell 1 is set with an arc-shaped transition, which effectively reduces the impact of airflow on the duct.

[0025] The wind direction changing section of the auxiliary air duct 7 is equipped with an arc-shaped corner 12. A right-angle air duct structure will significantly increase wind resistance. The auxiliary air duct 7 needs to deliver the wind to a target position different from the main air duct 3, so it must be equipped with a corner section. The arc-shaped corner 12 makes the wind transition smoothly and reduces the impact of the air duct.

[0026] The locking structure 8 includes a pin 802; a mounting bracket 803 is fixedly mounted on the outside of the housing 1, the rotating shaft 5 passes through the mounting bracket 803 and is fixedly connected to a disc 801, the disc 801 has several holes 805 evenly distributed around its circumference, the mounting bracket 803 has holes 805 corresponding to the disc 801, and the pin 802 is inserted into the corresponding holes 805 of the disc 801 and the mounting bracket 803. When it is necessary to adjust the air intake of the auxiliary air duct 7, the pin 802 is pulled out, the disc 801 is rotated to drive the rotating shaft 5 and the oscillating blade 6 to rotate together, and after rotating to the required position, the pin 802 is inserted into the hole 805 of the mounting bracket 803, the disc 801 can no longer rotate, thus locking the position of the oscillating blade 6.

[0027] The mounting bracket 803 has a U-shaped structure. A plate 804 is fixedly mounted on the protruding part in the middle of the mounting bracket 803. The plate 804 has a corresponding insertion hole 805 on the mounting bracket 803. The pin 802 is inserted into the corresponding insertion hole 805 of the disc 801, plate 804, and mounting bracket 803 in sequence. After insertion, it maintains a distance from the housing 1 to avoid interference with the housing 1. Since there is a gap between the insertion hole 805 and the pin 802, the double-hole fixed pin 802 is prone to shaking. The plate 804 is added to extend the contact length between the pin 802 and the insertion hole 805 to maintain the stability of the pin 802.

[0028] The locking structure 8 is an electric clutch, with one end connected to the rotating shaft 5 and the other end connected to the motor. To improve the opening and closing efficiency of the auxiliary air duct 7, the rotating shaft 5 is electrically controlled by a motor. The motor, in conjunction with the clutch, enables precise control of the motor shaft, maintains the fixed position of the swing blade 6, and improves the stability of the locking function.

[0029] The maximum opening position of the oscillating blade 6 does not obstruct the air inlet 2 of the main air duct 3. As the main air intake channel, the main air duct 3 needs to maintain a constant air intake volume while remaining normally open. It is preferable to place the oscillating blade 6 between the auxiliary air duct 7 and the main air duct 3, which facilitates the installation and connection of the locking structure 8.

[0030] Working principle: The air inlet 2 is connected to the air supply equipment, and the first air outlet 9 and the second air outlet 10 are connected to the container in a contoured manner; the first air outlet 9 is connected to the main heat dissipation area of ​​the container and always maintains ventilation, while the second air outlet 10 is connected to the secondary heat dissipation area of ​​the container. When needed, the auxiliary air duct 7 is opened for ventilation, and the locking structure 8 controls the opening of the swing blade 6. During the gradual opening process, the air intake of the auxiliary air duct 7 increases from small to large. After reaching the target position, the locking structure 8 is used to lock and fix the swing blade 6. The maximum opening position of the swing blade 6 does not block the air inlet 2 of the main air duct 3.

[0031] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

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