Air duct one-way valve of air curtain machine

Abstract

The utility model relates to an air duct one-way valve of an air curtain machine, which comprises a valve body frame, a one-way plate and a check block, the valve body frame is of a frame structure and forms a ventilation channel, the one-way plate is hinged with the valve body frame, the check block is fixed on the valve body frame, extends inwards and can prevent the one-way plate from rotating inwards, and a fan opposite to an air outlet is arranged in the air curtain machine. The two air outlets are communicated through the air duct, the one-way valves are fixed to the inner walls of the air outlets, close to the fans, of the air duct, air outlet of the two fans cannot interfere with each other, and the air outlet effect of the fans is improved.

Description

Technical Field

[0001] This utility model relates to a one-way valve for the air duct of an air curtain machine. Background Technology

[0002] An air curtain machine is installed above a door, forming a downward air curtain to block the escape of indoor heating or cooling. An air curtain machine typically has two fans facing each other, connected by an air duct that directs air downwards. Because the fans are positioned opposite each other and share an air duct, the airflow from the two fans can interfere with each other, reducing the overall airflow efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a one-way valve for the air duct of an air curtain machine, which prevents the air outlets of the two fans from interfering with each other and improves the air outlet effect of the fans.

[0004] To achieve the above objectives, the technical solution of this utility model is: a one-way valve for an air curtain machine, comprising a valve body frame, a one-way plate, and a stop block. The valve body frame is a frame structure and forms a ventilation channel. The one-way plate is hinged to the valve body frame. The stop block is fixed on the valve body frame and extends inward to prevent the one-way plate from rotating inward.

[0005] Preferably, it also includes a duct, with the valve body frame fixed to the inner wall of the duct near the air outlet of the fan. The fan outlet needs to pass through a one-way valve to ensure a one-way airflow effect.

[0006] Preferably, the valve body frame has a quadrilateral structure, with the length of the two sides greater than the width of the top and bottom. The shape of the quadrilateral is consistent with the inner wall of the air duct, ensuring that the air from the fan is blown out from the ventilation channel.

[0007] Preferably, a support bar is provided in the middle of the valve body frame, forming two ventilation channels. Each ventilation channel is provided with a one-way plate and a stop. The support bar increases the stability of the valve body frame. Compared with a single one-way plate, the weight of a single one-way plate is reduced and will not obstruct the airflow.

[0008] Preferably, the upper part of the one-way valve is hinged to the valve body frame, and both inner walls of the valve body frame are fixed with blocks. The hinged upper part of the one-way valve allows it to rotate along the upper part, which, together with the two blocks, creates a one-way airflow effect.

[0009] Preferably, the valve body frame is also provided with several mounting holes to facilitate connection to the air duct.

[0010] With the above structure, this utility model features a ventilation channel formed by the valve body frame, and a one-way plate hinged to the valve body frame covers the air outlet area of ​​the ventilation channel. A stop block is fixed to the valve body frame and extends inward, preventing the one-way plate from rotating inward. When two fans operate simultaneously, the air blown by each fan can be blown out through the ventilation channel of its respective one-way valve. When the air from one fan interferes with the air outlet of the other fan through the air duct, it will be blocked by the one-way plate and can only be blown out through the air outlet of the air duct. Therefore, the air outlets of the two fans will not interfere with each other, improving the air outlet efficiency of the fans. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the present invention;

[0012] Figure 2 yes Figure 1 Usage status diagram. Detailed Implementation

[0013] The present invention will be further described in detail below with reference to the embodiments given in the accompanying drawings.

[0014] See Figure 1 , 2 As shown, a one-way valve for an air curtain machine includes a valve body frame 1, a one-way plate 2, and a stop block 4. The valve body frame 1 is a frame structure and forms a ventilation channel 13. The one-way plate 2 is hinged to the valve body frame 1. The stop block 4 is fixed on the valve body frame 1 and extends inward to prevent the one-way plate 2 from rotating inward.

[0015] See Figure 1 , 2 As shown, the device includes a duct 12, and a valve frame 1 is fixed on the inner wall of the duct 12 near the air outlet of the fan 11. The fan 11 has air outlets set opposite each other, and the two air outlets are connected by the duct 12. In this embodiment, the air curtain machine is first fixed at a suitable position above the door frame, and then one end of the duct 12 is connected to the air outlet of the air curtain machine. When the device is started, the impeller of the fan 11 is driven to rotate at high speed by the motor. The blades on the impeller push the air, causing the air to be thrown out from the center of the impeller in a tangential direction to form a high-speed airflow. The airflow is delivered to the duct 12, so that the air outlet of the fan 11 can pass smoothly through the one-way valve, enter the ventilation channel 13, and be blown out from the air outlet of the air curtain machine to form an air curtain.

[0016] See Figure 1 , 2As shown, the valve body frame 1 has a quadrilateral structure, with the length of both sides greater than the width of the top and bottom. In this embodiment, the one-way valve is installed on the inner wall of the air outlet of the air duct 12 near the fan 11. The structure of the one-way valve body frame 1 is consistent with the structure of the inner wall of the air duct 12, ensuring that there is no gap between the valve body frame 1 and the inner wall of the air duct 12. Thus, the air from the fan 11 will be completely blown out through the ventilation channel 13 after passing through the one-way valve. There will be no air leakage between the valve body frame 1 and the inner wall of the air duct 12, ensuring that the air outlets of the two fans 11 will not interfere with each other.

[0017] See Figure 1 , 2 As shown, a support bar 6 is provided in the middle of the valve body frame 1, forming two ventilation channels 13. Each ventilation channel 13 is provided with a one-way plate 2 and a baffle 4. In this embodiment, when the fan 11 exhausts air through the one-way valve ventilation channel 13, the stability of the valve body frame 1 may be affected by external forces. The support bar 6 in the middle of the valve body frame 1 can solve this problem, enhancing the robustness of the valve body frame 1 and the air duct 12. In this embodiment, each ventilation channel 13 is provided with a one-way plate 2. Compared to only one one-way plate 2 on the valve body frame 1, having two one-way plates 2 reduces the area and weight. After the fan 11 exhausts air through the valve body frame 1, it can more easily blow up the one-way plate without affecting the air exhaust through the ventilation channel 13.

[0018] See Figure 1 , 2 As shown, the upper part of the one-way plate 2 is hinged to the valve body frame 1 by the hinge 3. Both sides of the inner wall of the valve body frame 1 are fixed with a stop block 4. In this embodiment, when the fan 11 blows air through the one-way valve, the one-way plate 2 is blown up by the air from the fan 11 and rotates along the upper part. When the one-way plate 2 falls down along the upper part, the stop block 4 blocks the one-way plate 2 from rotating inward, ensuring that the air from the fan 11 blows out in one direction after passing through the one-way valve.

[0019] See Figure 1 , 2 As shown, the valve body frame 1 has several mounting holes 5 on both sides in the vertical direction. In this embodiment, the one-way valve body frame 1 is first placed on the inner wall of the air duct 12. The same mounting holes are also provided at the same position on the inner wall of the air duct 12. The mounting holes 5 are then aligned with the mounting holes on the inner wall of the air duct 12. The bolts are then used to fix the valve body frame 1 and the nuts are used to tighten the bolts to achieve a firm seal and ensure the sealing between the valve body frame 1 and the inner wall of the air duct 12.

[0020] See Figure 1 , 2As shown, the one-way valve of this utility model is installed on the inner wall of the air duct 12 in the air curtain machine. The air curtain machine is equipped with two fans 11 with opposite air outlets. The air outlets of the two fans 11 are connected to the same air duct 12. The valve body frame 1 of the one-way valve is fixed on the inner wall of the air duct 12 near the air outlet of the fans 11. After the fans 11 are started, the fans 11 start to run. The high-speed airflow generated by the fans 11 flows into the air duct 12 through the ventilation channel 13 of the one-way valve. The air outlet of the air duct 12 forms a downward air curtain. Because of the presence of a one-way valve in this embodiment, the one-way plate 2 of the one-way valve is hinged at the top and can rotate along the top. The air generated by the fan 11 on one side can open the one-way plate 2, allowing it to pass through the ventilation channel 13. On the other side, part of the air from the fan 11 is discharged from the air outlet of the air duct 12, and the other part of the air will be blown directly to the one-way plate 2 on one side and blocked by the one-way plate 2, so as not to affect the air outlet of the fan 11 on one side, thus forming a one-way air outlet, ensuring that the air outlets of the two fans 11 do not interfere with each other, improving the air outlet effect of the fans 11, and the air can be concentrated and blown evenly towards the air outlet of the air curtain machine, and then blown out at a certain speed and angle to form a continuous air curtain, effectively blocking the airflow of indoor cold or hot air.

[0021] 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 modifications and improvements can be made without departing from the inventive concept of the present utility model, and these all fall within the protection scope of the present utility model.

Claims

1. A one-way valve for a duct of an air curtain machine, characterized in that: It includes a valve body frame (1), a one-way plate (2) and a stop (4). The valve body frame (1) is a frame structure and forms a ventilation channel (13). The one-way plate (2) is hinged to the valve body frame (1). The stop (4) is fixed on the valve body frame (1) and extends inward to prevent the one-way plate (2) from rotating inward.

2. A one-way valve for a duct of a curtain air machine according to claim 1, characterized in that: It also includes a duct (12), and the valve body frame (1) is fixed on the inner wall of the duct (12) near the air outlet of the fan (11).

3. The one-way valve of the air duct of the air curtain machine according to claim 1, characterized in that: The valve body frame (1) has a quadrilateral structure, with the length of both sides being greater than the width of the top and bottom.

4. The one-way valve of the air duct of the air curtain machine according to claim 1, characterized in that: The valve body frame (1) has a support bar (6) in the middle, forming two ventilation channels (13), each ventilation channel (13) is provided with a one-way plate (2) and a stop block (4).

5. The one-way valve according to claim 1, wherein: The upper part of the one-way plate (2) is hinged to the valve body frame (1) by a hinge (3), and the inner walls on both sides of the valve body frame (1) are fixed with blocks (4).

6. The one-way valve according to claim 1, wherein: The valve body frame (1) is also provided with several mounting holes (5).

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