An air flow automatic distribution device

Abstract

This utility model discloses an automatic airflow distribution device, comprising: a main duct for airflow and component installation; an inlet duct for gas input; a small outlet duct for gas discharge under low airflow conditions; a large outlet duct for gas discharge under high airflow conditions, which works in conjunction with the small outlet duct to achieve flow distribution; a gas equalization distribution device located at the inlet of the large outlet duct to ensure uniform distribution of incoming gas; and a spring adjustment device consisting of a spring, a spring plate, and a pad, which automatically adjusts the distribution path according to the velocity and pressure of the incoming air, without the need for external control or sensors. The electrical energy generated by a small turbine generator powers the flow monitoring sensor, achieving energy recovery and reuse. During the airflow distribution process, energy loss during airflow is minimized by optimizing the duct shape and internal structure.

Description

Technical Field

[0001] This utility model belongs to the field of air flow distribution technology, and specifically relates to an automatic air flow distribution device. Background Technology

[0002] In numerous fields such as industrial production, building ventilation, and transportation facilities, precise airflow distribution is crucial for the efficient and stable operation of systems. In industrial production, chemical reactions have strict requirements on gas flow rates, and improper distribution may lead to safety accidents. Building ventilation systems need to allocate flow rates reasonably based on space size and personnel density; otherwise, indoor air quality and comfort will be affected. Airflow control in the air intakes of aircraft and other vehicles is directly related to engine performance and flight safety.

[0003] Current airflow distribution devices have many shortcomings. Vane-type airflow meters have slow response to rapid acceleration, high intake resistance, and are prone to reading drift due to dirt accumulation. While Karman vortex flow meters offer high accuracy, their circuit parameters require adjustment when measuring different media, resulting in poor versatility. In large buildings and industrial ventilation, traditional valve regulation relies on manual operation, making it difficult to distribute flow and slow to respond to changes in operating conditions. For example, in factory compressed air systems, supply-demand mismatches often lead to pressure fluctuations and energy waste. Regulation devices for special scenarios are complex in structure and expensive, preventing their widespread adoption in civilian and industrial applications. Utility Model Content

[0004] The purpose of this invention is to provide an automatic airflow distribution device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic airflow distribution device, comprising:

[0006] The main duct serves as the primary channel for airflow and is used for airflow and component installation.

[0007] Air inlet duct, used for gas input;

[0008] Small air outlet duct, used for exhausting gas under low air volume conditions;

[0009] Large air outlet duct is used for exhausting gas in high-volume operating conditions and works with small air outlet duct to achieve flow distribution;

[0010] A gas flow distribution device is installed at the air inlet of the large air outlet duct to ensure uniform distribution of the incoming gas.

[0011] The spring adjustment device consists of a spring, a spring, and a pad. The spring is deformed by the force applied to the spring, which controls the opening and closing of the large air outlet duct.

[0012] A flow monitoring sensor is installed on the main air duct to monitor the gas flow rate inside the air inlet duct;

[0013] A small turbine generator, located inside a duct, converts air kinetic energy into electrical energy to power components.

[0014] Preferably, when the gas flow rate in the inlet pipe increases, the pressure inside the main duct rises, pushing the spring plate of the spring adjustment device to squeeze the spring and open the large outlet pipe; when the flow rate decreases, the spring resets to close the large outlet pipe, and the gas is discharged through the small outlet pipe. The gas flow distribution device is fixed at the inlet of the large outlet pipe, and the structural state is not affected by the flow rate change.

[0015] Preferably, during a fire, the smoke volume increases, the fan switches to a high-volume, high-pressure operation state, which causes the pressure in the main duct to rise. The increased pressure directly acts on the spring adjustment device, pushing the spring to squeeze the spring, causing the large outlet duct to open and discharge the smoke.

[0016] Preferably, the spring adjustment device is related to the flow rate and pressure in the main air duct. When the flow rate and pressure increase, the pressure acting on the spring increases, the spring contracts, and the gas is discharged smoothly. The spring's elastic coefficient is set based on the gas flow rate in the duct.

[0017] Preferably, the flow monitoring sensor can monitor the gas flow data in the air inlet duct in real time and provide feedback on the diversion data. The small turbine generator fan rotates when the air flows through it, converting the kinetic energy of the air into electrical energy, which can be stored.

[0018] Preferably, the electrical energy generated by the small turbine generator can be used to power the flow monitoring sensor, achieving energy recovery and reuse.

[0019] Preferably, the spring adjustment device is installed at the air inlet of the large-diameter air outlet duct, which can be replaced at any time and is easy to inspect. The installation positions of the flow monitoring sensor and the small turbine generator will not affect the normal flow of air in the duct. Furthermore, the spring adjustment device, the flow monitoring sensor, and the small turbine generator can all be easily disassembled, and the duct will not be affected if impurities or dust accumulate.

[0020] Compared with the prior art, the technical effects and advantages of this utility model are as follows:

[0021] The device can automatically adjust the airflow path based on the incoming air velocity and pressure, without the need for external control or sensors. This means it can adaptively ensure effective airflow under different operating conditions, reducing energy consumption.

[0022] The entire air distribution unit adopts a modular design, which allows for easy disassembly and assembly. This is highly advantageous for maintaining and replacing damaged parts, and also facilitates customization and expansion of the unit to suit different application scenarios.

[0023] During the air diversion process, energy loss during airflow is minimized by optimizing the pipe shape and internal structure. Simultaneously, environmental factors are considered in the selection of materials and the manufacturing process to reduce environmental impact.

[0024] The electricity generated by the small turbine generator can be used to power flow monitoring sensors, achieving energy recovery and reuse. Furthermore, it enables real-time monitoring of key parameters such as airflow and distribution ratios, which are then displayed to operators through an intuitive interface. This helps in the timely detection and adjustment of potential problems. Attached Figure Description

[0025] Figure 1 This is a detailed cross-sectional view of the automatic airflow distribution device of this utility model;

[0026] Figure 2 This is a diagram of the automatic airflow distribution device of this utility model;

[0027] Figure 3 This is a drawing of the small turbine generator wind turbine of this utility model.

[0028] In the diagram: 1. Main air duct; 2. Air inlet duct; 3. Small air outlet duct; 4. Large air outlet duct; 6. Spring adjustment device; 7. Spring; 8. Spring; 9. Pad; 10. Flow monitoring sensor; 11. Small turbine generator fan. Detailed Implementation

[0029] 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.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved with", "connected", etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0031] Please see Figure 1-3This utility model provides a technical solution: an automatic airflow distribution device, including a main air duct 1. The main air duct 1 serves as the main load-bearing structure of the entire device. Its internal channels are smoothed to reduce gas flow resistance. The duct body is made of corrosion-resistant, high-strength metal material, which can adapt to long-term use in different environments. The main air duct 1 includes an air inlet duct 2, with a smooth transition guide structure at the inlet of the air inlet duct 2 to guide the gas smoothly into the interior of the main air duct 1 and avoid airflow turbulence; and small air outlet ducts 3 and large air outlet ducts 4 with different diameters. The diameter of the small air outlet duct 3 is designed according to conventional low-volume operating conditions to ensure that the gas can be quickly and centrally discharged at low flow rates. The diameter of the large air outlet duct 4 is determined according to emergency high-volume airflow requirements to meet the rapid discharge of large amounts of smoke and other gases.

[0032] At the air inlet of the large-diameter large-outlet duct 4, a gas flow equalization and distribution device is installed. This device consists of multiple sets of radially distributed guide vanes, which can make the gas entering the large-outlet duct 4 evenly distributed, avoid pipe wear caused by excessive local airflow velocity, and improve gas emission efficiency. A spring adjustment device 6 is also provided. The spring adjustment device 6 consists of a spring 7, a spring 8, and a pad 9. The spring 7 is made of an alloy material with high elasticity and fatigue resistance, which can maintain stable deformation capacity under long-term stress. The pad 9 is made of high-temperature resistant and wear-resistant rubber material, which can reduce wear at the contact point between the spring 7 and the pipe and extend the service life of the components.

[0033] A flow monitoring sensor 10 is installed on the main duct 1. The sensor adopts the high-precision thermal flow measurement principle and can maintain measurement accuracy over a wide flow range. Its probe extends into the central airflow area inside the main duct 1 to obtain more representative flow data. A small turbine generator fan 11 is installed inside the duct. The turbine blades are made of lightweight and high-strength composite materials. The blade angle has been optimized by fluid dynamics, so that it can start rotating at a low airflow speed and improve energy conversion efficiency.

[0034] This device can automatically distribute airflow based on the gas flow rate within the inlet duct 2. Its core function lies in triggering a mechanical response through changes in gas flow rate, forming a closed-loop flow regulation mechanism. Typically, the airflow originates from supply and exhaust fans and other equipment. These devices can adjust their output airflow according to actual needs. When the supply airflow is small, all the gas is discharged from the small-diameter outlet duct 3. At this time, the gas flow distribution device is essentially in its initial state, with its guide vanes maintaining a fixed angle, thus not interfering with the airflow in the small outlet duct 3.

[0035] In the event of an emergency such as a fire, the spread of fire will generate a large amount of smoke. At this time, the fire control system will send a signal to quickly switch the fan to a high-volume, high-pressure state. The air volume and pressure in the main duct 1 will then rise sharply in a short period of time. The increased pressure will act evenly on the surface of the spring 7, overcoming the initial elastic force of the spring 8 and pushing the spring 7 towards the pad 9 to compress the spring 8. The compression of the spring 8 will increase with the increase of pressure, thereby gradually opening the large-diameter outlet duct 4. The degree of opening is matched with the air volume and pressure, so as to discharge a large amount of smoke in the shortest possible time and reduce the smoke concentration at the fire scene.

[0036] The spring adjustment device 6 has a precise correspondence with the flow rate and pressure in the main air duct 1. When the flow rate and pressure increase, the pressure acting on the spring plate 7 increases linearly, and the spring 8 contracts. The contraction process is smooth and repeatable, ensuring that the gas can be smoothly discharged through the large outlet duct 4. The elastic coefficient k of the spring 8 is determined by the maximum and minimum design trigger values ​​of the gas flow rate in the duct. By adjusting the k value, the device can adapt to the flow rate adjustment requirements in different scenarios.

[0037] The flow monitoring sensor 10 can monitor the gas flow data in the air inlet duct 2 in real time. Its sampling frequency can reach more than 10 times per second, which can capture instantaneous changes in flow in a timely manner and feed back the flow data to the control center through wired or wireless communication, providing a basis for system operation status monitoring and fault diagnosis. The small turbine generator 11 rotates when air flows through it. Its internal permanent magnet generator can convert the mechanical energy of the turbine into electrical energy. The generated electrical energy is processed by rectification and voltage regulation circuits and stored in the built-in battery of the device. The battery adopts a large-capacity, long-life lithium battery, which can provide power to key components for a certain period of time in the event of a power outage.

[0038] The electrical energy generated by the small turbine generator 11 can be used to power the flow monitoring sensor 10, forming a self-sufficient energy cycle system and achieving the purpose of energy recovery and reuse. This not only reduces dependence on external power sources but also improves the energy-saving and environmental protection performance of the device.

[0039] The spring adjustment device 6 is installed at the air inlet of the large-diameter outlet duct 4. It employs a modular snap-fit ​​connection structure, allowing for quick and easy replacement, facilitating daily inspection and maintenance, and effectively reducing failure rates due to component aging or damage. The installation positions of the flow monitoring sensor 10 and the small turbine generator 11 are carefully designed to avoid the main airflow channels within the main duct 1, thus avoiding significant resistance to normal airflow within the duct. Furthermore, the spring adjustment device 6, flow monitoring sensor 10, and small turbine generator 11 can all be easily disassembled using specialized tools. When impurities and dust accumulate inside the duct due to long-term use, these components can be easily cleaned or replaced, ensuring the duct remains unaffected and maintaining the long-term stable operation of the device.

[0040] Disassembly process of spring adjusting device 6: Prepare one Phillips screwdriver, one Allen wrench, and a plastic pry bar for prying the spring piece (avoid damaging the surface of the parts); Positioning the installation: The spring adjusting device 6 is located at the air inlet of the large air outlet duct 4. It has a detachable metal retaining ring on its outer side, with four Phillips screws evenly distributed on the retaining ring; Use the Phillips screwdriver to unscrew the four screws on the retaining ring in sequence, and remove the retaining ring. At this time, you can see the clip structure connecting the spring adjusting device 6 to the duct; Use the Allen wrench to loosen the two Allen bolts on the clip, and gently pull the edge of the spring piece 7 to separate the spring adjusting device 6 from the groove of the air inlet of the large air outlet duct 4. The disassembly is then complete.

[0041] Disassembly procedure for flow monitoring sensor 10: First, disconnect the flow monitoring sensor 10 from the external control system (if it is a wired connection, unplug the connector; if it is a wireless connection, turn off the sensor power switch). The sensor is fixed to the outer wall of the main duct 1 by two arc-shaped metal clips, which are secured with bolts at both ends. Use a wrench to unscrew the bolts and remove the metal clips. The sensor's probe extends into the duct through a pre-drilled hole on the main duct 1. A sealing rubber ring is provided at the contact point between the probe and the duct. Hold the sensor body and slowly pull the probe outwards, being careful not to damage the sealing rubber ring.

[0042] The small turbine generator 11 is installed on a bracket inside the main duct 1. The bracket is fixed to the inner wall of the duct with three countersunk screws. If there is a protective net on the outside of the fan (to prevent impurities from entering), use needle-nose pliers to remove the clips on the edge of the protective net and remove the protective net. Use an extended screwdriver to reach into the inside of the duct and unscrew the three countersunk screws on the bracket. At this time, the fan can shake slightly with the bracket. The power cord of the fan is connected to the external energy storage device through the wire hole on the duct wall. After unplugging the power cord connector, the fan and the bracket can be removed from the duct.

[0043] During disassembly, none of the connecting parts of any component use welded or other non-removable structures, and sufficient operating space is provided, allowing a single person to complete the disassembly work. Disassembled components can be directly cleaned, inspected, or replaced; installation is simply a matter of reversing the steps to restore usability.

[0044] This automatic airflow distribution device achieves automatic distribution of gas flow based on the airflow through structural design and component coordination. The specific working principle is as follows:

[0045] Under normal conditions, when the air supply volume provided by equipment such as supply and exhaust fans is small, the device ensures that all the gas is discharged from the small outlet pipe 3 according to the gas flow rate in the inlet pipe 2. At this time, the gas flow distribution device at the air inlet of the large outlet pipe 4 is not affected, the spring adjustment device 6 also remains in its initial state, and the large outlet pipe 4 is in the closed state.

[0046] In emergency situations such as fires, when the increased smoke volume causes the fan to switch to a high-volume, high-pressure state, the air volume and pressure in the main duct 1 also increase. The increased pressure acts on the spring plate 7 of the spring adjustment device 6, pushing the spring plate 7 to compress the spring 8, causing the spring 8 to contract, thereby opening the outlet of the large exhaust duct 4, allowing a large amount of smoke to be discharged in a timely manner through the large exhaust duct 4, thus achieving flow distribution adjustment in emergency situations.

[0047] Meanwhile, the flow monitoring sensor 10 on the main air duct 1 monitors the gas flow data in the air inlet duct 2 in real time and feeds back the diversion data. The small turbine generator 11 inside the duct rotates when air flows through it, converting the kinetic energy of the air into electrical energy. The generated electrical energy can be stored and can power the flow monitoring sensor 10, realizing energy recovery and reuse.

[0048] In addition, the spring 8 of the spring adjustment device 6 has an elastic coefficient determined by the gas flow rate in the pipeline, ensuring accurate response under different flow rates and pressures; it, along with the flow monitoring sensor 10 and the small turbine generator fan 11, are easy to replace and disassemble, and the installation position does not affect the normal air flow, ensuring stable and efficient operation of the device.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic air flow distribution device, characterized by, include: The main duct (1) serves as the main channel for airflow and is used for airflow and component installation. Air inlet pipe (2), used for gas input; Small air outlet duct (3) is used for exhausting gas under low air volume conditions; The large air outlet duct (4) is used for the discharge of gas under large air volume conditions and works in conjunction with the small air outlet duct (3) to achieve flow distribution; A gas flow distribution device is installed at the air inlet of the large air outlet pipe (4) to ensure that the incoming gas is evenly distributed. The spring adjustment device (6) consists of a spring (7), a spring (8) and a pad (9). The spring (7) is subjected to force to drive the spring (8) to deform, thereby controlling the opening and closing of the large air outlet pipe (4). A flow monitoring sensor (10) is installed on the main air duct (1) to monitor the gas flow rate in the air inlet duct (2); A small turbine generator (11) is installed inside the duct to convert air kinetic energy into electrical energy to power the components.

2. An automatic air flow distribution device according to claim 1, characterized in that: When the gas flow rate of the inlet pipe (2) increases, the pressure inside the main pipe (1) rises, pushing the spring plate (7) of the spring adjustment device (6) to squeeze the spring (8) and open the port of the large outlet pipe (4); when the flow rate decreases, the spring (8) resets and closes the large outlet pipe (4), and the gas is discharged through the small outlet pipe (3).

3. An automatic air flow distribution device according to claim 2, wherein: During a fire, the amount of smoke increases, and the fan switches to a high-volume, high-pressure operating state, causing the pressure inside the main air duct (1) to rise. The increased pressure directly acts on the spring plate (7) of the spring adjustment device (6), pushing the spring plate to squeeze the spring (8), causing the opening of the large air outlet duct (4) to discharge the smoke.

4. The automatic airflow distribution device according to claim 1, characterized in that: The spring adjustment device (6) adjusts the opening of the large air outlet pipe (4) in response to the pressure in the main air duct (1); wherein the elastic coefficient of the spring (8) is set based on the gas flow rate in the pipe.

5. The automatic airflow distribution device according to claim 1, characterized in that: The flow monitoring sensor (10) monitors the gas flow rate and feeds back the data; the electrical energy generated by the small turbine generator (11) can be stored.

6. The automatic airflow distribution device according to claim 1, characterized in that: The electrical energy generated by the small turbine generator (11) can be used to power the flow monitoring sensor (10), achieving energy recovery and reuse.

7. The automatic airflow distribution device according to claim 1, characterized in that: The spring adjustment device (6) is installed at the air inlet of the large air outlet pipe (4) for easy replacement and inspection; the installation positions of the flow monitoring sensor (10) and the small turbine generator fan (11) do not affect the normal air flow in the pipe.

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