Y-shaped ventilation three-way valve

Abstract

The utility model discloses a Y-shaped ventilation three-way valve which comprises a Y-shaped three-way pipe fitting, a valve is arranged in the Y-shaped three-way pipe fitting, a branch pipe intersection inner end is formed between a first branch pipe and a second branch pipe, the valve comprises a rotating shaft and a door plate, the rotating shaft is arranged at one end of the door plate, and the door plate is hinged to the branch pipe intersection inner end through the rotating shaft. A stepping motor is arranged outside the Y-shaped three-way pipe fitting and drives the door plate to swing through a worm and gear reducing mechanism, the door plate has a first position and a second position relative to the Y-shaped three-way pipe fitting, the door plate can swing between the first position and the second position, the door plate closes the first branch pipe and opens the second branch pipe at the first position, and the door plate closes the second branch pipe at the second position. The door plate closes the second branch pipe and opens the first branch pipe. The Y-shaped ventilation three-way valve is convenient to use, and the flow proportion of the main pipe distributed to the first branch pipe and the second branch pipe can be adjusted only by arranging one valve.

Description

Technical Field

[0001] This utility model relates to the field of three-way valves, specifically to a Y-type ventilation three-way valve. Background Technology

[0002] Currently, some ventilation systems require Y-type ventilation three-way valves. These valves consist of a main pipe and two branch pipes, with the ends of the two branch pipes connected to one end of the main pipe. The valves are designed to adjust the flow rate ratio from the main pipe to the two branch pipes. However, existing Y-type ventilation three-way valves require manual adjustment, as illustrated in the Chinese Utility Model Patent Publication No. CN206861830U, "Air Conditioning Duct Airflow Ratio Distribution Three-Way Adapter." When applied to ceiling-mounted ventilation systems, the existing Y-type ventilation three-way valves are inconvenient to use due to the difficulty of manual operation. Therefore, improvements to the existing Y-type ventilation three-way valves are necessary. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a Y-type ventilation three-way valve that is easy to use.

[0004] The objective of this utility model is achieved through the following technical solution.

[0005] The Y-type ventilation three-way valve disclosed in this utility model includes a Y-type three-way fitting, which includes a main pipe, a first branch pipe, and a second branch pipe. The first branch pipe and the second branch pipe are connected to one end of the main pipe. A valve is provided inside the Y-type three-way fitting. An intersecting inner end is formed between the first branch pipe and the second branch pipe. The valve includes a rotating shaft and a door plate. The rotating shaft is located at one end of the door plate. The door plate is hinged to the intersecting inner end of the branch pipe through the rotating shaft. A stepper motor is provided outside the Y-type three-way fitting. The stepper motor drives the door plate to swing through a worm gear reduction mechanism. The door plate has a first position and a second position relative to the Y-type three-way fitting. The door plate can swing between the first position and the second position. In the first position, the door plate closes the first branch pipe and opens the second branch pipe. In the second position, the door plate closes the second branch pipe and opens the first branch pipe.

[0006] Preferably, a first limiting step is formed between the first branch pipe and the main pipe, and in the first position, the door panel is abutted against the first limiting step; a second limiting step is formed between the second branch pipe and the main pipe, and in the second position, the door panel is abutted against the second limiting step.

[0007] Preferably, the main pipe, the first branch pipe, and the second branch pipe are all horizontally elliptical pipes.

[0008] Preferably, the Y-type tee fitting includes a lower connector and an upper connector, and the lower connector and the upper connector are connected by fasteners.

[0009] Preferably, a transmission box is installed on the outside of the Y-shaped tee fitting, the worm gear reduction mechanism includes a worm and a worm wheel, the worm is rotatably connected to the transmission box, the worm wheel is located in the transmission box and meshes with the worm, the worm wheel is installed on the end of the rotating shaft, and the stepper motor is installed on the outside of the transmission box and drives the worm.

[0010] Preferably, one end of the rotating shaft has an external spline, and the worm gear has an internal spline, with the external spline and the internal spline being adapted to be inserted into each other.

[0011] Compared with the prior art, the advantages of this utility model are as follows: Since this utility model sets a stepper motor to drive the door panel to swing through a worm gear reduction mechanism, the door panel has a first position and a second position relative to the Y-type three-way pipe fitting. The door panel can swing between the first position and the second position. In the first position, the door panel closes the first branch pipe and opens the second branch pipe. In the second position, the door panel closes the second branch pipe and opens the first branch pipe. Therefore, the Y-type ventilation three-way valve of this utility model is convenient to use. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the Y-type ventilation three-way valve of this utility model.

[0013] Figure 2 This is an exploded view of the Y-type ventilation three-way valve of this utility model.

[0014] Figure 3 This is a top-view cross-sectional view of the Y-type ventilation three-way valve of this utility model.

[0015] Figure 4 This is a schematic diagram of the door panel of this utility model in the first position.

[0016] Figure 5 This is a schematic diagram showing the door panel of this utility model in the second position.

[0017] Figure 6 This is a cross-sectional view of the Y-type ventilation three-way valve of this utility model from the left view direction.

[0018] Figure 7 This is a top-view cross-sectional view of the Y-type tee fitting of this utility model.

[0019] Figure 8 This is a three-dimensional structural diagram of the valve of this utility model.

[0020] Figure 9 This is a three-dimensional structural diagram of the worm gear of this utility model.

[0021] Labeling Explanation: Y-type tee fitting 1; lower assembly 101; upper assembly 102; main pipe 11; first branch pipe 12; first limiting step 121; second branch pipe 13; second limiting step 131; inner end of intersecting branch pipes 10; valve 2; rotating shaft 21; external spline 211; door panel 22; stepper motor 4; worm gear 5; worm wheel 6; internal spline 61; transmission box 7; box cover 71. Detailed Implementation

[0022] The present invention will now be further described with reference to the accompanying drawings.

[0023] The Y-type ventilation three-way valve of this utility model, such as Figures 1 to 3 As shown, the device includes a Y-type tee fitting 1, which comprises a main pipe 11, a first branch pipe 12, and a second branch pipe 13. The first branch pipe 12 and the second branch pipe 13 are connected to one end of the main pipe 11, as shown. Figure 1 As shown, the Y-type tee fitting 1 is equipped with a valve 2, such as... Figure 7 As shown, a branch pipe intersection inner end 10 is formed between the first branch pipe 12 and the second branch pipe 13. The branch pipe intersection inner end 10 is the inner end of the area where the first branch pipe 12 and the second branch pipe 13 intersect. Therefore, the outer end of the area where the first branch pipe 12 and the second branch pipe 13 intersect is connected to one end of the main pipe 11. As shown in Figure 7, the valve 2 includes a rotating shaft 21 and a door plate 22. The rotating shaft 21 is located at one end of the door plate 22. The rotating shaft 21 and the door plate 22 are integrally formed, which is beneficial to improving the structural strength of the valve 2. The axis of the main pipe 11, the axis of the first branch pipe 12, and the axis of the second branch pipe 13 can all be arranged in the same horizontal plane. The rotating shaft 21 is perpendicular to the horizontal plane. The door plate 22 is hinged to the branch pipe intersection inner end 10 through the rotating shaft 21. Specifically, the branch pipe intersection inner end 10 forms a circular insertion hole. The lower end of the rotating shaft 21 is inserted into the circular insertion hole, so the door plate 22 can swing around the rotating shaft 21. Figure 1 As shown, a stepper motor 4 is installed on the outside of the Y-shaped tee fitting 1. The stepper motor 4 drives the door panel 22 to swing through a worm gear reduction mechanism. The door panel 22 has a first position and a second position relative to the Y-shaped tee fitting 1, and the door panel 22 can swing between the first position and the second position, as shown. Figure 4 As shown, in the aforementioned first position, the door panel 22 closes the first branch pipe 12 and opens the second branch pipe 13. That is to say, at this time, the door panel 22 is located between the first branch pipe 12 and the main pipe 11. The door panel 22 separates the first branch pipe 12 from the main pipe 11, thereby allowing the airflow entering the main pipe 11 to flow to the second branch pipe 13; Figure 5 As shown, in the aforementioned second position, door panel 22 closes the second branch pipe 13 and opens the first branch pipe 12; as Figure 3As shown, when the door panel 22 is located on the symmetrical plane between the second branch pipe 13 and the first branch pipe 12 (i.e., the door panel 22 is located between the first position and the second position), the cross-sectional area of ​​the main pipe 11 connected to the first branch pipe 12 is equal to the cross-sectional area of ​​the main pipe 11 connected to the second branch pipe 13.

[0024] Since the stepper motor 4 can drive the door panel 22 to swing between the first and second positions, the flow rate distributed from the main pipe 11 to the first branch pipe 12 and the second branch pipe 13 can be adjusted electrically, avoiding the need for manual operation on the three-way valve. Therefore, the three-way valve of this invention is convenient to use. Because the stepper motor 4 drives the door panel 22 to swing through a worm gear reduction mechanism, the torque-increasing effect of the worm gear reduction mechanism allows the stepper motor 4 to be set with relatively low power while still meeting the needs of driving the valve 2. Furthermore, the worm gear reduction mechanism has a self-locking effect, preventing airflow from pushing the door panel 22. Since the stepper motor 4 is located outside the Y-shaped three-way fitting 1, it avoids the potential impact of contaminants contained in the fluid inside the Y-shaped three-way fitting 1 on the stepper motor 4. Figures 3 to 5 As shown, this utility model can adjust the flow ratio of the main pipe 11 to the first branch pipe 12 and the second branch pipe 13 by setting only one valve 2, avoiding the need for the first branch pipe 12 and the second branch pipe 13 to have independent valve structures. Therefore, the structure of the three-way valve of this utility model is relatively simple.

[0025] Furthermore, such as Figure 7 As shown, a first limiting step 121 is formed between the first branch pipe 12 and the main pipe 11, as... Figure 4 As shown, in the aforementioned first position, the door panel 22 is abutted against the first limiting step 121; as Figure 7 As shown, a second limiting step 131 is formed between the second branch pipe 13 and the main pipe 11, as... Figure 5 As shown, in the aforementioned second position, the door panel 22 abuts against the second limiting step 131; for example, as Figure 4 As shown, when airflow is input into the main pipe 11, the airflow applies pressure to the door panel 22. Although it may not cause the door panel 22 to swing or shift, it may cause the door panel 22 to bend and deform elastically. However, since the first limiting step 121 supports the door panel 22, the elastic bending deformation of the door panel 22 can be reduced, thus preventing the door panel 22 from fatigue breaking.

[0026] Furthermore, such as Figure 1As shown, the main pipe 11, the first branch pipe 12, and the second branch pipe 13 are all horizontally elliptical pipes. That is to say, the cross-sections of the main pipe 11, the first branch pipe 12, and the second branch pipe 13 are all (or approximately) elliptical, and the major axis of the ellipse is located in the horizontal plane. This makes the Y-type ventilation three-way valve a flat three-way valve, which helps to reduce the overall height of the Y-type ventilation three-way valve and facilitates its installation between the ceiling and the interior ceiling. Under the same height and size setting, the ventilation cross-sectional area of ​​the horizontally elliptical pipe is larger than that of the circular pipe. When the Y-type ventilation three-way valve of this utility model is connected to a flexible air duct, the end of the flexible air duct can be flattened and fitted to the input end of the main pipe 11, and the body of the flexible air duct can also be flattened (approximately elliptical) and installed between the ceiling and the interior ceiling. The Y-type ventilation three-way valve of this utility model can also be connected to a pipe with an elliptical cross-section.

[0027] Furthermore, such as Figure 2 As shown, the Y-type tee fitting 1 includes a lower assembly 101 and an upper assembly 102. The lower assembly 101 and the upper assembly 102 are connected by fasteners. That is to say, the Y-type tee fitting 1 has a split structure. Specifically, a threaded sleeve is integrally formed on the inner side of the upper end of the lower assembly 101. A screw passes through the upper assembly 102 and is screwed onto the aforementioned threaded sleeve, thereby firmly connecting the lower assembly 101 and the upper assembly 102. A slot can be formed at the upper end of the lower assembly 101, and the lower end of the upper assembly 102 is inserted into the aforementioned slot, which helps to improve the sealing effect. Since the Y-type tee fitting 1 is composed of the lower assembly 101 and the upper assembly 102, it is convenient to install the valve 2 into the Y-type tee fitting 1.

[0028] Furthermore, such as Figure 1 As shown, the Y-type tee fitting 1 has a transmission box 7 mounted on its exterior via corresponding screws, as... Figure 2 As shown, the worm gear reducer includes a worm 5 and a worm wheel 6. The worm 5 is rotatably connected inside the transmission housing 7. Specifically, a rotational support hole is formed on the side wall of the transmission housing 7, and the two ends of the worm 5 are respectively adapted to connect to the corresponding rotational support holes. The worm wheel 6 is located inside the transmission housing 7, as shown in the figure. Figure 6 As shown, the worm gear 6 is meshed with the worm 5, and the worm gear 6 is mounted on the end of the rotating shaft 21, as shown. Figure 1 As shown, the stepper motor 4 is mounted on the outside of the transmission box 7. The stepper motor 4 drives the worm gear 5. Specifically, the stepper motor 4 has an output shaft, which is a flat shaft. The output shaft is coaxially inserted into one end of the worm gear 5. Thus, the stepper motor 4 can drive the worm gear 5 to rotate, the worm gear 5 can drive the worm wheel 6 to rotate, and the worm wheel 6 can drive the valve 2 to swing. By setting up the transmission box 7, it is beneficial to protect the worm gear reduction mechanism. Figure 1 and Figure 2 As shown, the transmission box 7 is covered with a box cover 71 to prevent debris from falling between the worm 5 and the worm wheel 6.

[0029] Furthermore, such as Figure 8 As shown, one end (upper end) of the rotating shaft 21 has an external spline 211, as... Figure 9 As shown, an internal spline 61 is formed inside the worm gear 6, as... Figure 6 As shown, the external spline 211 and the internal spline 61 are fitted together. Since the spline connection structure can withstand a large torque (compared to a single flat key structure), the transmission connection between the shaft 21 and the worm gear 6 is not prone to wear and failure. The external spline 211 of the shaft 21 passes through the upper assembly 102.

Claims

1. A Y-type vented three-way valve, comprising a Y-type three-way pipe fitting (1), the Y-type three-way pipe fitting (1) comprising a main pipe (11), a first branch pipe (12) and a second branch pipe (13), the first branch pipe (12) and the second branch pipe (13) communicating one end of the main pipe (11), characterized in that: The Y-shaped three-way pipe fitting (1) is internally provided with a valve (2), a branch pipe intersection inner end (10) is formed between the first branch pipe (12) and the second branch pipe (13), the valve (2) comprises a rotating shaft (21) and a door plate (22), the rotating shaft (21) is arranged at one end of the door plate (22), the door plate (22) is hinged to the branch pipe intersection inner end (10) through the rotating shaft (21), the Y-shaped three-way pipe fitting (1) is externally provided with a stepping motor (4), the stepping motor (4) drives the door plate (22) to swing through a worm gear deceleration mechanism, the door plate (22) has a first position and a second position relative to the Y-shaped three-way pipe fitting (1), the door plate (22) can swing between the first position and the second position, in the first position, the door plate (22) closes the first branch pipe (12) and opens the second branch pipe (13), in the second position, the door plate (22) closes the second branch pipe (13) and opens the first branch pipe (12).

2. The Y-patterned vented tee valve of claim 1, wherein: A first limiting step (121) is formed between the first branch pipe (12) and the main pipe (11), in the first position, the door plate (22) abuts and connects the first limiting step (121); a second limiting step (131) is formed between the second branch pipe (13) and the main pipe (11), in the second position, the door plate (22) abuts and connects the second limiting step (131).

3. The Y-type vented tee valve of claim 1 or 2, wherein: The main pipe (11), the first branch pipe (12) and the second branch pipe (13) are all horizontally arranged elliptical pipes.

4. The Y-type vented tee valve of claim 1 or 2, wherein: The Y-shaped three-way pipe fitting (1) comprises a lower assembly (101) and an upper assembly (102), the lower assembly (101) and the upper assembly (102) are connected through fasteners.

5. The Y-patterned vented tee valve of claim 4, wherein: A transmission box (7) is mounted on the outside of the Y-shaped three-way pipe fitting (1), the worm gear deceleration mechanism comprises a worm (5) and a worm gear (6), the worm (5) is rotationally connected in the transmission box (7), the worm gear (6) is arranged in the transmission box (7), the worm gear (6) is meshingly connected with the worm (5), the worm gear (6) is mounted on the end of the rotating shaft (21), the stepping motor (4) is mounted on the outside of the transmission box (7), the stepping motor (4) is drivingly connected with the worm (5).

6. The Y-patterned vented tee valve of claim 5, wherein: One end of the rotating shaft (21) is formed with an external spline (211), the worm gear (6) is internally formed with an internal spline (61), the external spline (211) is adaptively inserted into the internal spline (61).

Images