A high-efficiency air supply device with current-sharing effect and a high-efficiency air supply system

Abstract

The application discloses a high-efficiency air supply device with current equalization effect, which comprises a shell and a current equalization plate. The shell is a box with an open bottom, and the open bottom forms an air outlet. An air inlet is formed in the top of the shell, and the air inlet is located in the middle of the top plate of the shell. The current equalization plate is arranged in the shell, and the shape of the current equalization plate is the same as the cross-sectional shape of the shell. The current equalization plate is in close contact with the inner wall of the shell. The current equalization plate is divided into a high-speed area, a medium-speed area and a low-speed area from the center to the periphery. The hole diameter of the through holes in the high-speed area, the medium-speed area and the low-speed area gradually increases. The high-efficiency air supply device changes the airflow entering the air inlet into airflow with uniform speed distribution at the air outlet, ensures the stable and uniform airflow environment of the rear working chamber, and ensures the stability of the operation of the precision equipment or the accuracy of the data of the experimental equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air flow control, in particular to a high-efficiency air supply device with flow uniformization effect. BACKGROUND

[0002] In the field of clean room environment, laboratory operation, etc., the air supplied by the external environmental control device reaches the working chamber after being controlled by the high-efficiency air supply device, so as to ensure the stability of the air quality and temperature in the chamber. The uniformity and stability of the air flow supplied by the high-efficiency air supply device are crucial to the working environment of the working chamber.

[0003] At present, the flow uniformization plate is arranged in the high-efficiency air supply device to reduce the impact of high-speed air flow on the bottom of the air inlet after the air flow is subjected to flow splitting treatment. However, the existing flow uniformization plate has the following shortcomings: 1. The hole diameter and spacing of the flow uniformization plate are fixed. When the high-speed air flow enters the air supply inlet, the uneven distribution of the air flow often leads to excessively high air flow speed in the central region and low air flow speed in the edge region, so that it is difficult to achieve uniform air speed distribution of the whole after the air flow passes through the flow uniformization plate, and the concentrated air flow or uneven distribution of the air flow on the air outlet surface is prone to occur; 2. The uneven air flow distribution entering the working chamber can cause turbulence in the chamber, affect the stability of the precision equipment inside, or cause errors in the data of the experimental equipment and affect the experimental results; 3. Vortex may occur in the local area, forming an air flow dead angle, so that the tiny particles in the air are difficult to be discharged and deposited in these areas, affecting the clean environment in the chamber, and thus affecting the operation of the precision equipment or experimental equipment; 2. The position of the flow uniformization plate is fixed and cannot be adjusted, so the flow uniformization effect cannot be adjusted, and the air supply system cannot meet the complex working condition requirements, and cannot provide a stable and uniform air flow environment for the chamber, thereby affecting the operation of the experimental equipment or precision equipment. SUMMARY

[0004] The present application provides a high-efficiency air supply device with flow uniformization effect, which changes the air flow entering the air inlet into air flow with uniform speed distribution at the air outlet, ensures the stable and uniform air flow environment of the rear working chamber, and ensures the stability of the precision equipment operation or the accuracy of the experimental equipment data. In addition, the tiny particles in the air in the rear working chamber are discharged along with the air flow, effectively improving the clean environment of the working chamber and further ensuring the operation of the precision equipment or experimental equipment data. Meanwhile, the present application also provides a high-efficiency air supply system.

[0005] The application discloses a high-efficiency air supply device with a flow equalizing effect, which comprises a shell and a flow equalizing plate.

[0006] Further, the high-speed area of the flow equalizing plate is located directly below the air inlet and has the same shape as the air inlet 2.1; the medium-speed area is located at the periphery of the high-speed area, and the low-speed area is located at the periphery of the medium-speed area; the high-speed area has the smallest area, the medium-speed area has the largest area, and the low-speed area has an area therebetween.

[0007] Further, when the shell is rectangular and the air inlet is circular, the flow equalizing plate is rectangular, the high-speed area is circular, and the high-speed area and the medium-speed area together form a small rectangle, and the long and short edges of the small rectangle are parallel to the long and short edges of the flow equalizing plate.

[0008] Further, when the shell is rectangular and the air inlet is circular, the flow equalizing plate is rectangular, the high-speed area is circular, and the high-speed area and the medium-speed area together form an ellipse, the center of the ellipse coincides with the center of the circle, and the long and short edges of the ellipse are parallel to the long and short edges of the flow equalizing plate.

[0009] Further, the high-efficiency air supply device further comprises four L-shaped height adjusting blocks, one edge of the height adjusting block is connected to the flow equalizing plate through a fastener, and the other edge is connected to the side wall of the shell.

[0010] Further, the thickness of the flow equalizing plate is between 1 mm and 5 mm.

[0011] Further, the flow equalizing plate is processed by using a precise laser cutting technology.

[0012] Further, the surface of the flow equalizing plate is subjected to corrosion prevention treatment.

[0013] Further, the flow equalizing plate and the height adjusting block are made of aluminum alloy or stainless steel.

[0014] The application discloses a high-efficiency air supply system, which comprises an external environmental control device, a high-efficiency air supply device and a working room.

[0015] The high-efficiency air supply device has the following advantages: 1. The airflow generated by the front external environmental control device flows through the flow uniformizing plate to form airflow with uniform flow rate, and is sent to the rear working chamber through the air outlet to fill the entire body chamber, forming a stable and uniform airflow environment, and no turbulence is caused in the chamber; 1. The stability of the operation of the precision equipment is ensured, and the service life is prolonged; 2. The experimental error caused by airflow fluctuation is reduced, and the accuracy of experimental data, especially the results of precision instrument experiments, is ensured; 3. The tiny particles in the air will not accumulate but will be discharged with the airflow, effectively improving the clean environment of the working chamber and further ensuring the operation of the precision equipment or experimental equipment; 2. The height of the flow uniformizing plate is adjusted by replacing the height adjusting block, the distance between the flow uniformizing plate and the air inlet is adjusted, the flow path of the airflow passing through the flow uniformizing plate is changed, the uniformity and distribution effect of the airflow are optimized, the special requirements of airflow distribution in different application scenarios are met, and the best airflow uniformity can be achieved under different working conditions. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the whole air supply system of the present application.

[0017] Figure 2 It is a structural schematic diagram of the high-efficiency air supply device of the present application.

[0018] Figure 3 It is a combined schematic diagram of the flow uniformizing plate and the height adjusting block.

[0019] Figure 4 It is a schematic diagram of the height adjusting block.

[0020] Figure 5 It is a schematic diagram of the airflow distribution of the high-efficiency air supply device.

[0021] Figure 6 It is a schematic diagram of the flow uniformizing plate arranged in different regions. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] Embodiment 1

[0024] From Figure 2 , Figure 3 , Figure 5 , Figure 6It can be known that the high-efficiency air supply device with the current equalization effect comprises a shell 2.2, a current equalization plate 2.4, the shell 2.2 is a box with an open bottom, an air outlet 2.3 is formed by the open bottom, an air inlet 2.1 is formed at the top of the shell 2.2, and the air inlet 2.1 is located in the middle of the top plate of the shell 2.2; the current equalization plate 2.4 is arranged in the shell 2.2, the shape of the current equalization plate 2.4 is the same as the cross-sectional shape of the shell 2.2, and the current equalization plate 2.4 is in close contact with the inner wall of the shell 2.2; the current equalization plate 2.4 is divided into a high-speed area, a medium-speed area and a low-speed area from the center to the periphery; and the hole diameters of the through holes in the high-speed area, the medium-speed area and the low-speed area gradually increase.

[0025] The working principle of the high-efficiency air supply device is as follows: after the airflow of the external ring control device in the early stage enters the high-efficiency air supply device, the current equalization plate is divided into the high-speed area, the medium-speed area and the low-speed area according to the internal flow field distribution, the airflow first enters the high-speed area with a small hole diameter, and a small amount of airflow passes through the current equalization plate; then, most of the airflow diffuses to the medium-speed area and partially passes through the current equalization plate; finally, the airflow reaches the low-speed area in the periphery and passes through the through hole with a large hole diameter, so that the airflow speed is effectively balanced, the airflow speed distribution out of the air outlet is uniform, the uniform airflow enters the subsequent working chamber and can fill each corner, a stable and uniform airflow environment is formed in the chamber, airflow fluctuation is reduced, the stability of the precise equipment inside is ensured or the accuracy of the experimental equipment data is ensured; in addition, the tiny particles in the air will not accumulate but will be discharged with the airflow, the environmental quality of the chamber is effectively improved, and the operation of the precise equipment or the experimental equipment is ensured.

[0026] The high-efficiency air supply device changes the airflow entering the air inlet into the airflow with uniform speed distribution at the air outlet, and solves the phenomenon that the airflow speed is reduced due to the outward diffusion of the airflow entering the air supply inlet, and the phenomenon that airflow concentration or uneven distribution easily occurs on the air outlet surface.

[0027] Example 2

[0028] From Figure 2 、 Figure 3 、 Figure 5 、 Figure 6 It can be known that the high-efficiency air supply device: the high-speed area of the current equalization plate 2.4 is located directly below the air inlet 2.1 and has the same shape as the air inlet 2.1; the medium-speed area is located at the periphery of the high-speed area, and the low-speed area is located at the periphery of the medium-speed area; the area of the high-speed area is the smallest, the area of the medium-speed area is the largest, and the area of the low-speed area is in the middle.

[0029] The high-speed area corresponds to a larger pressure and flow rate difference caused by high-speed airflow, in order to avoid airflow disturbance and local pressure imbalance caused by large-area high-speed flow, therefore the area ratio of the high-speed area is the smallest; the low-speed area is an airflow easing area, used to reduce the turbulent effect of airflow boundary and airflow swirling phenomenon, so that the overall flow field is more stable, avoiding local strong disturbance or dead angle, the area ratio is slightly increased; the medium-speed area is the main distribution area of airflow, occupying most of the air supply surface, in order to ensure the stable distribution of most of the airflow, therefore the area ratio of the medium-speed area is the largest. By reasonably designing the areas of the high-speed area, the medium-speed area and the low-speed area, the effective balance of airflow velocity and the uniformity of airflow pressure are ensured, so that the airflow of the air outlet is further uniform, and the phenomenon that the airflow is concentrated or unevenly distributed on the air outlet surface of the traditional air supply outlet is improved.

[0030] Among them: the hole diameter and hole spacing on the flow uniforming plate 2.4 are adjusted according to actual application requirements to adapt to different air supply outlet sizes and airflow requirements.

[0031] Example 3

[0032] From Figure 2 , Figure 3 , Figure 5 , Figure 6 It can be known that the high-efficiency air supply device: when the shell 2.2 is rectangular and the air inlet 2.1 is circular, the flow uniforming plate 2.4 is rectangular, the high-speed area is circular, and the high-speed area and the medium-speed area are small rectangles, the long and short edges of which are parallel to the long and short edges of the flow uniforming plate 2.4.

[0033] For the case that the shell 2.2 is rectangular and the air inlet 2.1 is circular: the high-speed area is a circular area with the same size as the air inlet 2.1, the medium-speed area is a small rectangular area minus the circular area, and the low-speed area is the overall rectangular area of the flow uniforming plate 2.4 minus the small rectangular area. Among them: the small rectangular area of the medium-speed area makes the holes arranged more closely, the hole rate per unit area is higher, the ventilation efficiency is increased, the airflow coverage is more comprehensive, the appearance of local dead angle can be avoided, and the overall airflow is enhanced; the long and short edges of the small rectangular hole match the long and short edges of the flow uniforming plate 2.4, that is, the long and short edges of the air outlet, which helps to improve the ventilation efficiency, airflow uniformity, and avoid local flow rate difference.

[0034] The airflow first enters the circular high-speed area with small hole diameter, a small amount of airflow passes through the flow uniforming plate; then, most of the airflow diffuses to the medium-speed area and partially passes through the flow uniforming plate; finally, the airflow reaches the low-speed area around and passes through the large-diameter through hole, realizing the effective balance of airflow velocity, offsetting the phenomenon of wind speed reduction caused by the outward diffusion of airflow, and ensuring that the airflow of the high-efficiency air supply device forms a uniform velocity distribution on the air outlet surface.

[0035] Example 4

[0036] From Figure 2 , Figure 3 , Figure 5 , Figure 6 It can be known that the high-efficiency air supply device: when the shell 2.2 is rectangular, the air inlet 2.1 is circular, the flow uniforming plate 2.4 is rectangular, the high-speed area is circular, the overall of the high-speed area and the medium-speed area is elliptical, the center of the elliptical shape coincides with the center of the circular shape, and the long and short edges of the elliptical shape are parallel to the long and short edges of the flow uniforming plate 2.4.

[0037] For the case that the shell 2.2 is rectangular and the air inlet 2.1 is circular: the high-speed area is a circular area with the same size as the air inlet 2.1, the medium-speed area is an area obtained by subtracting the circular area from the elliptical area, and the low-speed area is an area obtained by subtracting the elliptical area from the overall rectangular area of the flow uniforming plate 2.4. Among them, the elliptical area can better guide the diffusion of the airflow from the high-speed area to the low-speed area, reducing the turbulent effect of the high-speed airflow boundary, making the overall flow field more stable, and avoiding local strong disturbance or dead angle; the ratio of the long and short edges of the elliptical shape is increased, so that the airflow velocity on the long and short edges of the flow uniforming plate is more matched, thereby improving the uniformity of the airflow.

[0038] The airflow first enters the circular high-speed area with a small hole diameter, and a small amount of airflow passes through the flow uniforming plate; then, most of the airflow diffuses to the medium-speed area and partially passes through the flow uniforming plate; finally, the airflow reaches the low-speed area around and passes through the large-diameter through hole, realizing effective balance of the airflow velocity, offsetting the phenomenon of reduced wind speed caused by the outward diffusion of the airflow, and ensuring that the airflow with uniform velocity is formed on the air outlet surface of the high-efficiency air supply device.

[0039] Example 5

[0040] From Figure 3 , Figure 4 It can be known that the high-efficiency air supply device further comprises four L-shaped height adjusting blocks 2.5, one edge of the height adjusting block 2.5 is connected to the flow uniforming plate 2.4 through a fastener, and the other edge is connected to the side wall of the shell 2.2.

[0041] According to different air supply systems and working conditions, the height adjusting block 2.5 is replaced to adjust the height of the flow uniformizing plate 2.4, adjust the distance between the flow uniformizing plate 2.4 and the air inlet, change the flow path of the air flow passing through the flow uniformizing plate 2.4, optimize the uniformity and distribution effect of the air flow, meet the special requirements of air flow distribution in different application scenarios, and make the best air flow uniformity can be realized under different working conditions. The specific description is as follows: 1. In the case of high height, the flow uniformizing plate 2.4 is close to the air inlet 2.1, and the air flow is dispersed immediately after entering the device, that is, the local high-speed area of the air flow is quickly reduced, the strong air flow is avoided to directly enter the medium-speed area and the low-speed area, the air flow can be quickly diffused and uniformly distributed, and it is suitable for the working condition of large air flow pressure; 2. In the case of low height, the flow uniformizing plate 2.4 is far away from the air inlet 2.1, and the air flow reaches the flow uniformizing plate after sufficient diffusion time and space, and the air flow is more stable when passing through the flow uniformizing plate, and the air flow speed of the edge area is relatively increased, so that the problem of low air flow speed of the edge area can be effectively solved, which is helpful to improve the air flow uniformity of the edge area, and is suitable for the working condition of large area air outlet.

[0042] Example 6

[0043] The thickness of the flow uniformizing plate 2.4 of the high-efficiency air supply device is between 1 mm and 5 mm.

[0044] The thickness of the flow uniformizing plate 2.4 should be able to ensure that it has sufficient structural strength and durability.

[0045] The flow uniformizing plate 2.4 is processed by using precise laser cutting technology to ensure the accuracy of the hole diameter and spacing. The height adjusting block 2.5 and the flow uniformizing plate 2.4 are made of aluminum alloy or stainless steel materials to improve the structural strength and durability. The surface of the flow uniformizing plate 2.4 is subjected to corrosion prevention treatment to prolong its service life.

[0046] Example 7

[0047] From Figure 1 It can be seen that the high-efficiency air supply system of the application: it includes an external environmental control device 1, a high-efficiency air supply device 2, and a working chamber 3. The external environmental control device 1 is communicated with the high-efficiency air supply device 2 through the air supply pipeline 11, and the high-efficiency air supply device 2 is communicated with the working chamber 3. The air inlet 2.1 is fixedly connected with the air supply pipeline 1.1, and the air outlet 2.3 is sealingly connected with the chamber air inlet 3.1.

[0048] The high-efficiency air supply system of the application: the external environmental control device 1 generates constant temperature and humidity gas, the high-efficiency air supply device 2 transmits the gas into the working chamber 3, and the gas passing through the flow uniformizing plate 2.4 makes the gas flow rate distribution of the gas flowing out of the air outlet 2.3 uniform. The gas with uniform flow rate distribution fills the entire body chamber after entering the working chamber 3, forming a stable and uniform air flow environment, ensuring the stability of the operation of the precision equipment or the accuracy of the experimental data of the experimental equipment.

[0049] The high-efficiency air supply device has the following advantages: 1. The airflow generated by the front external environmental control device flows through the flow uniformizing plate to form airflow with uniform flow rate distribution, and is sent to the rear working chamber through the air outlet to fill the entire body chamber, forming a stable and uniform airflow environment without causing turbulence in the chamber; 1. Ensures the stability of the operation of precision equipment and prolongs its service life; 2. Reduces experimental errors caused by airflow fluctuations and ensures the accuracy of experimental data, especially the results of precision instrument experiments; 3. Tiny particles in the air will not accumulate but will be discharged with the airflow, effectively improving the clean environment of the working chamber and further ensuring the operation of precision equipment or experimental equipment; 2. By replacing the height adjusting block to adjust the height of the flow uniformizing plate, the distance between the flow uniformizing plate and the air inlet is adjusted, the flow path of the airflow passing through the flow uniformizing plate is changed, the uniformity and distribution effect of the airflow are optimized, and the special requirements of airflow distribution in different application scenarios are met, so that the best airflow uniformity can be achieved under different working conditions.

[0050] Therefore, the high-efficiency air supply device ensures the balance and consistency of the environment in the working chamber, and is especially suitable for occasions that require strict air quality and temperature control, such as clean rooms, laboratories, etc. The high-efficiency air supply system improves the system stability and environmental control precision.

[0051] The preferred embodiments of the application disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details and do not limit the application to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of the specification. The specification selects and describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited only by the claims and their entire scope and equivalents.

Claims

1. A high-efficiency air supply device with flow equalization effect, characterized in that: It includes the shell (2.2), the flow uniforming plate (2.4), the shell (2.2) is the box with the bottom opening, the bottom opening forms the air outlet (2.3), the top of the shell (2.2) is provided with the air inlet (2.1), the air inlet (2.1) is located in the middle of the top plate of the shell (2.2); the flow uniforming plate (2.4) is arranged in the shell (2.2), the shape of the flow uniforming plate (2.4) is same with the cross section shape of the shell (2.2), the flow uniforming plate (2.4) is in close contact with the inner wall of the shell (2.2); the flow uniforming plate (2.4) is divided into high speed area, medium speed area and low speed area from the center to the periphery; the hole diameter of the through hole on the high speed area, the medium speed area and the low speed area gradually increases; the high speed area of the flow uniforming plate (2.4) is located directly below the air inlet (2.1) and has the same shape as the air inlet (2.1); the medium speed area is located at the periphery of the high speed area, and the low speed area is located at the periphery of the medium speed area; the area of the high speed area is the smallest, the area of the medium speed area is the largest, and the area of the low speed area is in the middle; when the shell (2.2) is rectangular and the air inlet (2.1) is circular, the flow uniforming plate (2.4) is rectangular, the high speed area is circular, and the whole of the high speed area and the medium speed area is small rectangular, and the long and short edges of the whole of the high speed area and the medium speed area are parallel to the long and short edges of the flow uniforming plate (2.4); when the shell (2.2) is rectangular and the air inlet (2.1) is circular, the flow uniforming plate (2.4) is rectangular, the high speed area is circular, and the whole of the high speed area and the medium speed area is oval, the center of the oval is coincided with the center of the circle, and the long and short edges of the oval are parallel to the long and short edges of the flow uniforming plate (2.4); the high efficiency air supply device further comprises four L-shaped height adjusting blocks (2.5), one edge of the height adjusting block (2.5) is connected with the flow uniforming plate (2.4) through a fastener, and the other edge is connected with the side wall of the shell (2.2).

2. The high efficiency air delivery device of claim 1, wherein: The thickness of the flow uniforming plate (2.4) is between 1mm and 5mm.

3. The high efficiency air delivery device of claim 1, wherein: The flow uniforming plate (2.4) is processed by using precise laser cutting technology.

4. The high efficiency air delivery device of claim 1, wherein: The surface of the flow uniforming plate (2.4) is treated by anti-corrosion.

5. The high efficiency air delivery device of claim 1, wherein: The flow uniforming plate (2.4) and the height adjusting block (2.5) are made of aluminum alloy or stainless steel material.

6. A high efficiency air delivery system characterized by: It includes the external ring control device (1), the high efficiency air supply device (2) of any one of claims 1-5, and the working room (3); the external ring control device (1) is communicated with the high efficiency air supply device (2) through the air supply pipeline (1.1), the high efficiency air supply device (2) is communicated with the working room (3); the air inlet (2.1) is fixedly connected with the air supply pipeline (1.1), and the air outlet (2.3) is sealingly connected with the working room air inlet (3.1).

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