Anti-backflow exhaust sub-runner three-way component
By designing a three-way component for the anti-backflow exhaust diversion channel, and using a specific airflow path and sealing plate to control the airflow direction, the problem of airflow impact and backflow in the prefabricated emergency hospital ventilation system was solved, achieving efficient ventilation and extending equipment life.
Patent Information
- Application Number
- CN202520324896.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-02-27
AI Technical Summary
Traditional three-way components are prone to airflow collisions, eddies, and backflow in prefabricated emergency hospital ventilation systems, which increases ventilation resistance, affects system efficiency and equipment lifespan, and existing anti-backflow devices are complex and unreliable.
Design a backflow prevention exhaust diversion tee component, which connects to the main exhaust pipe through a first manifold and inserts a second manifold into the main pipe to form a specific airflow path. The exhaust holes on the sealing plate are used to control the airflow direction and speed to avoid airflow impact and eddies.
It effectively controls airflow direction, reduces eddies and backflow, lowers ventilation resistance, improves system efficiency, extends equipment life, and simplifies system structure.
Smart Images
Figure CN223740321U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to air conveying shunt equipment field especially relates to a prevent backflow exhaust shunt way tee component. BACKGROUND
[0002] Building ventilation system is the key facility to guarantee indoor air quality, adjust temperature and humidity and remove pollutants. It is generally used in hospitals, especially some prefabricated emergency hospitals and other public places. In the ventilation system, the direction control and anti-backflow of air flow are important technical problems to ensure the efficient operation of the system.
[0003] Taking the tee component used in prefabricated emergency hospitals as an example, prefabricated emergency hospitals are generally two-story buildings. The exhaust of the toilets in the upper and lower wards is discharged to the roof through the vertical shared duct. When the air flow of two sub-pipes converges into the main pipe, the angle between the two air flows exists, which is easy to cause mutual impact, fusion and impact with the inner wall of the pipe, thereby forming vortex and even small-scale backflow. This will increase the ventilation resistance, may cause pipe vibration and affect the service life of the pipe; and is not conducive to standardized production.
[0004] In the ventilation system, air flow backflow may cause the following problems: backflow of dirty air to the clean area, affecting indoor air quality; backflow causes air flow turbulence, reducing ventilation efficiency; fan, filter and other equipment may be damaged due to reverse air flow;
[0005] To prevent air flow backflow, the traditional ventilation system usually uses check valves or one-way dampers. However, these devices have the following limitations: increase system complexity, need additional installation and maintenance; large air flow resistance, affect ventilation efficiency; insufficient reliability: may appear wear or jam after long-term use. Therefore, developing an exhaust shunt tee component with anti-backflow function has become an important research direction for building ventilation system design, especially in the direction of prefabricated emergency hospital ventilation system. INVENTION CONTENTS
[0006] In order to overcome the shortcomings of the prior art, the utility model provides a prevent backflow exhaust shunt way tee component.
[0007] The utility model discloses the following technical scheme is realized: a prevent backflow exhaust shunt way tee component, including exhaust main pipe, first flow pipe and second flow pipe, first flow pipe with one end of exhaust main pipe is linked together, second flow pipe with main pipe is linked together and the end of second flow pipe is inserted into exhaust main pipe by one end of exhaust main pipe.
[0008] One end of the exhaust main pipe is provided with a sealing plate, the sealing plate is provided with a first exhaust hole and a second exhaust hole, the first manifold pipe is fixed on the sealing plate and coaxial with the first exhaust hole, and the second manifold pipe is inserted into the exhaust main pipe through the second exhaust hole.
[0009] The first manifold pipe is communicated with the exhaust main pipe through the first exhaust hole, the second manifold pipe is fixedly connected with the side wall of the second exhaust hole, and one end of the second manifold pipe inserted into the exhaust main pipe is parallel to the exhaust main pipe.
[0010] The pipe diameter of the first manifold pipe is the same as that of the second manifold pipe.
[0011] The inner diameter of the exhaust main pipe is 160 mm, the outer diameter of the first manifold pipe and the second manifold pipe is 80 mm, and the length of the second manifold pipe inserted into the exhaust main pipe is 350 mm.
[0012] The end of the first manifold pipe away from the exhaust main pipe is a first air inlet, and the end of the second manifold pipe extending out of the exhaust main pipe is fixedly connected with the elbow pipe to form a second air inlet.
[0013] Compared with the prior art, the first manifold pipe is communicated with one end of the exhaust main pipe, the second manifold pipe is communicated with the main pipe, and the end of the second manifold pipe is inserted into the exhaust main pipe from one end of the exhaust main pipe. The second manifold pipe is inserted into the main pipe, so that the branch air flow moves along a specific air flow path. When the air flow flows into the exhaust main pipe through the second manifold pipe, a barrier is formed, which helps to control the direction and speed of the air flow, so that the two air flows flowing into the exhaust main pipe through the first manifold pipe and the second manifold pipe do not impact each other, do not form vortex, and reduce the backflow phenomenon. BRIEF DESCRIPTION OF DRAWINGS
[0014] Fig. 1 is a schematic diagram of the internal structure of the anti-backflow exhaust shunt tee component in the utility model;
[0015] Fig. 2 is a schematic diagram of the internal structure of the anti-backflow exhaust shunt tee component in the utility model;
[0016] In the drawing: 1, exhaust main pipe; 2, first manifold pipe; 3, second manifold pipe; 4, sealing plate; 41, first exhaust hole; 42, second exhaust hole; 5, elbow pipe. DETAILED DESCRIPTION
[0017] In the following, the utility model is further described in combination with the drawings and specific embodiments, and it should be noted that the following described embodiments or technical features can be combined to form new embodiments without conflict.
[0018] Referring to Figs. 1-2 A backflow prevention exhaust diverging tee member includes an exhaust main pipe 1, a first manifold pipe 2 and a second manifold pipe 3. The first manifold pipe 2 is in communication with one end of the exhaust main pipe 1. The second manifold pipe 3 is in communication with the main pipe and the end of the second manifold pipe 3 is inserted into the exhaust main pipe 1 from one end of the exhaust main pipe 1. The second manifold pipe 3, due to its insertion into the main pipe, causes the branch airflow to move along a specific airflow path. A barrier is formed when the airflow is merged into the exhaust main pipe 1 via the second manifold pipe 3, which helps to control the direction and speed of the airflow, so that the two airflows flowing into the exhaust main pipe 1 via the first manifold pipe 2 and the second manifold pipe 3 do not impact each other and do not form eddies, thereby reducing the backflow phenomenon.
[0019] In this embodiment, a cover plate 4 is provided at one end of the exhaust main pipe 1. The cover plate 4 is provided with a first exhaust hole 41 and a second exhaust hole 42. The end of the first manifold pipe 2 is fixed to the cover plate 4 and the first manifold pipe 2 is coaxial with the first exhaust hole 41. The end of the second manifold pipe 3 passes through the second exhaust hole 42 and is placed in the exhaust main pipe 1. The cover plate 4 is used to provide a position for welding and fixing the first manifold pipe 2 and the second manifold pipe 3, and at the same time, the cover plate 4 is used to virtually reduce the possibility of backflow.
[0020] In this embodiment, the best implementation is that the first manifold pipe 2 is in communication with the exhaust main pipe 1 through the first exhaust hole 41, the second manifold pipe 3 is fixedly connected with the side wall of the second exhaust hole 42, and the end of the second manifold pipe 3 placed in the exhaust main pipe 1 is parallel to the exhaust main pipe 1. The end of the first manifold pipe 2 away from the exhaust main pipe 1 is a first air inlet, and the end of the second manifold pipe 3 extending out of the exhaust main pipe 1 can form a second air inlet or can be fixedly connected with an elbow pipe coaxially, and the second air inlet is formed by the elbow pipe. Specifically, the first manifold pipe 2 is directly inserted into the bottom of the exhaust main pipe 1, and the airflow discharged into the exhaust main pipe 1 through the first manifold pipe 2 is discharged upward. After the second manifold pipe 3 is connected with the elbow pipe, the second manifold pipe 3 is inserted into the exhaust main pipe 1. When the airflow enters the exhaust main pipe 1 through the second air inlet and is transported into the exhaust main pipe 1 through the second manifold pipe 3, the airflow moves along a specific airflow path, forming a barrier. This helps to control the direction and speed of the airflow, so that the two airflows flowing into the exhaust main pipe 1 via the first manifold pipe 2 and the second manifold pipe 3 do not impact each other and do not form eddies, thereby reducing the backflow phenomenon.
[0021] The pipe diameter of the first manifold 2 is the same as the pipe diameter of the second manifold 3 in the embodiment. Preferably, the inner diameter of the exhaust main pipe 1 is 160 mm, the outer diameter of the first manifold 2 and the second manifold 3 is 80 mm, and the length of the second manifold 3 inserted into the exhaust main pipe 1 is 350 mm. Taking a double-layer assembly type emergency hospital as an example, the exhaust air in the bathroom in the upper and lower patient rooms is discharged through the vertical shared pipeline to the roof. When the first manifold 2 (φ80) for exhaust air in the first patient room and the second manifold 3 (φ80) for exhaust air in the second patient room are merged into the exhaust main pipe 1 (φ160), no tee joint is arranged, the first manifold 2 is directly inserted into the bottom of the exhaust main pipe 1 (φ160), the air flow is upwardly discharged, and a first flow channel is formed. The second manifold 3 is directly connected with the exhaust main pipe 1 (φ160) through a 90° elbow, and then a branch pipe is arranged to extend into the exhaust main pipe 1 (φ160), the length of the branch pipe inserted into the exhaust main pipe 1 (φ160) is 350 mm, a second flow channel is formed, and the flow channel is inserted into the main pipeline, so that the branch air flow moves along a specific air flow path. The inserted pipeline forms a barrier, which is helpful to control the direction and speed of the air flow, so that the two air flows in the first flow channel and the second flow channel do not impact each other, do not form vortex, and do not produce backflow.
[0022] Compared with the prior art, the first manifold 2 is in communication with one end of the exhaust main pipe 1, the second manifold 3 is in communication with the main pipe, and the end of the second manifold 3 is inserted into the exhaust main pipe 1 from one end of the exhaust main pipe 1. The second manifold 3 is inserted into the main pipeline, so that the branch air flow moves along a specific air flow path. When the air flow is merged into the exhaust main pipe 1 through the second manifold 3, a barrier is formed, which is helpful to control the direction and speed of the air flow, so that the two air flows flowing into the exhaust main pipe 1 through the first manifold 2 and the second manifold 3 do not impact each other, do not form vortex, and reduce the backflow phenomenon.
[0023] The above embodiment is only a preferred embodiment of the utility model, and cannot be used to limit the range of protection of the utility model, and any non-substantial change and replacement made by the person skilled in the art on the basis of the utility model belongs to the range of protection required by the utility model.
Claims
1. A backdraft prevention vent manifold tee member comprising a vent main, a first manifold, and a second manifold, characterized in that: The first manifold is communicated with one end of the exhaust main pipe, and the second manifold is communicated with the main pipe and the end of the second manifold is inserted into the exhaust main pipe by one end of the exhaust main pipe.
2. A backflow preventing vented manifold conduit tee component according to claim 1, wherein: One end of the exhaust main pipe is provided with a sealing plate, the sealing plate is provided with a first exhaust hole and a second exhaust hole, the end of the first manifold is fixed on the sealing plate and the first manifold is coaxial with the first exhaust hole, and the end of the second manifold is inserted into the exhaust main pipe through the second exhaust hole.
3. A backflow preventing vented manifold conduit tee component as claimed in claim 2, wherein: The first manifold is communicated with the exhaust main pipe through the first exhaust hole, the second manifold is fixedly connected with the side wall of the second exhaust hole, and the end of the second manifold inserted into the exhaust main pipe is parallel to the exhaust main pipe.
4. A backflow preventing vented manifold conduit tee component as claimed in claim 1, wherein: The pipe diameter of the first manifold is the same as that of the second manifold.
5. A backflow preventing vented manifold conduit tee component as claimed in claim 4, wherein: The inner diameter of the exhaust main pipe is 160 mm, the outer diameter of the first manifold and the second manifold is 80 mm, and the length of the second manifold inserted into the exhaust main pipe is 350 mm.
6. A backflow preventing vented manifold conduit tee component as in any of claims 1-5, wherein: The end of the first manifold away from the exhaust main pipe is a first air inlet, and the end of the second manifold out of the exhaust main pipe is coaxially fixedly connected with the elbow pipe to form a second air inlet.