Rectifier type air diffuser

Abstract

The application relates to the field of air filtering devices, in particular to a rectifying type air distribution and uniform air device, which comprises a first rectifying bin, a rectangular groove body structure, a rectangular strip-shaped protective plate arranged around the first rectifying bin, a taper distribution plate clamped in the groove body, the taper distribution plate being a plate-shaped structure with a taper cross section, through holes arranged on the plate surfaces on both sides of the taper angle, and a strip-shaped support leg with a right-angled cross section fixedly welded at the four corners of the protective plate; a second rectifying plate, a plate-shaped structure, is installed at the lower part of the first rectifying bin and is fixedly contacted with the other end of the support leg, and through holes with uniform sizes are arranged on the plate surface, so that the problem that the air supply outlet and the air outlet on the same straight line cannot make the technical device play the effect of uniformly outputting air when the air supply pressure is too high in the above-mentioned technology is solved, the device has the effects of wide adaptation scene, large application range, simple structure, low comprehensive cost, uniformly dispersed air output and slowed air output speed.

Description

Technical Field

[0001] This invention relates to the field of air filtration devices, specifically a rectifier-type diffuser and uniform airflow device. Background Technology

[0002] In recent years, with the rapid development of technology, air conditioners have become widespread in households and have become one of the most important appliances in homes and companies. Air conditioners use a direct-blowing air supply method when working, which can effectively and quickly reduce the ambient temperature of a designated area, allowing residents to live in a relatively comfortable temperature environment. In companies with high population density, it is inevitable that the air supply from the air conditioner unit will directly blow air onto employees at their workstations. Over time, this can lead to a decrease in immunity and colds in those directly exposed to the air conditioner, and in severe cases, it can cause a series of problems such as air conditioning sickness, facial paralysis, and trigeminal neuralgia. Therefore, a diffuser has been designed, which is installed on the air supply outlet to reduce the air supply velocity and prevent direct airflow.

[0003] In a fan filter unit with publication number CN114876837B, the technology adopts a box-type structure, with an internal electric fan and differential pressure switch to regulate the pressure difference between the air supply and the air outlet. The internal planar diffuser plate further improves the uniformity of air in the containment chamber. However, the air supply and air outlet of this technology are on the same straight line. This means that when the air supply pressure is too high, the air supply and air outlet on the same straight line cannot achieve the effect of uniform air output. In addition, the electric fan equipped with this technology increases the maintenance and operation costs, making it unsuitable for non-professional occasions such as homes and companies.

[0004] In the air handling ceiling with publication number CN219300881U, the technology uses a conical filter and a baffle plate, which can effectively guide the output air to disperse and avoid the air supply and outlet being on the same straight line without obstruction. The air outlet is equipped with a steel ball spring structure, making the device more suitable for high-pressure air supply environments. However, the cover plate-casing-baffle plate structure adopted by the device makes the device complex and poses a risk of air overflow and leakage. In addition, the device requires a high-pressure strong air supply and is not suitable for conventional use. Furthermore, the conical filter requires regular maintenance, but it is not easy to replace, which increases maintenance costs. Summary of the Invention

[0005] The present invention provides a rectifier-type diffused air distribution device, which aims to solve the problem in the above-mentioned technology that the air supply and air outlet, which are on the same straight line, cannot achieve a uniform air output effect when the air supply pressure is too high.

[0006] Secondly, this invention provides a rectifier-type diffused air distribution device, which has the advantages of wide applicability, large scope of application, simple structure, low overall cost, uniformly dispersed air output, and reduced airflow output speed compared with the prior art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A rectifier-type diffuser and uniform airflow device includes: a primary rectifier chamber, which is a rectangular trough structure with rectangular strip-shaped protective plates around its perimeter. A tapered diverter plate is installed inside the trough, and the tapered diverter plate is a plate-shaped structure with a tapered cross-section. Through holes are provided on the plate surface on both sides of the tapered angle, and the four corners of the protective plate are welded and fixed to one end of four strip-shaped support legs with right-angled cross-sections of equal length; a secondary rectifier plate, which is a plate-shaped structure, is installed at the lower part of the primary rectifier chamber and is fixed in contact with the other end of the support legs, and the plate surface is provided with uniform and equal-sized through holes.

[0009] The primary rectifier chamber is the first-stage rectifier structure. Fresh air is introduced from the air supply port and is distributed and dispersed at the primary rectifier chamber, which has the effect of uniformly and dispersedly introducing air.

[0010] The secondary rectifier plate, as a secondary rectifier structure, serves to receive and transmit the airflow dispersed from the primary rectifier chamber, and to make the airflow evenly dispersed and refined by passing through the secondary rectifier plate, thereby effectively slowing down the speed of the input airflow.

[0011] Preferably, the center line of the tapered diffuser plate is the cone apex, and the two sides are inclined towards the end of the secondary rectifier plate to form a tapered angle. The angle range of the tapered angle is 135 degrees to 170 degrees. The large angle range of the tapered diffuser plate can make the input airflow evenly and gently dispersed by the cone apex when the air is input to the tapered diffuser plate. If the angle is too small, the airflow will be dispersed too quickly, resulting in the problem of air backflow and recirculation in the chamber. If the angle is too large, the input air will not be dispersed obviously.

[0012] Preferably, the tapered diverter has uniformly distributed and equally sized through holes on both sides of the cone apex, and a blank plate surface is provided between the through hole area and the cone apex. The area of ​​the blank plate surface is 25%-50% of the area of ​​the tapered diverter. The blank plate surface is opposite to the air supply port. When the air supply port enters the primary rectifier chamber, the blank plate surface can block the air supply port and the air outlet to avoid the air supply port and the air outlet being on the same straight line without strong obstruction. This makes the invention have a better air dispersion effect and also makes the invention suitable for high-pressure air supply environments.

[0013] Preferably, it also includes a top plate, which is a plate-shaped structure and is installed on the upper part of the tapered diverter plate. The top plate has a circular tubular air supply port at the center of its upper plane, and the air supply port penetrates the top plate.

[0014] Preferably, a top plate sealing strip is also included. The top plate sealing strip is U-shaped and installed between the top plate and the upper part of the first-stage rectifier chamber. The top plate sealing strip connects and seals the top plate and the first-stage rectifier chamber, and connects and seals the upper part of the first-stage rectifier chamber and the top plate. The top plate sealing strip is used to seal the top plate and the third-stage rectifier chamber to prevent air overflow and leakage from occurring in the overall casing of the invention. In addition, the top plate sealing strip is also used to seal the top plate and the first-stage rectifier chamber to ensure that the input airflow entering from the air supply port can only be transmitted to the next stage through the first-stage rectifier chamber, avoiding uneven dispersion. Secondly, it also ensures the sealing between the first-stage rectifier chamber and the third-stage rectifier chamber, so that the airflow in the first-stage rectifier chamber can only enter the third-stage rectifier chamber through the second-stage rectifier plate, thereby achieving the purpose of uniform rectification in three stages.

[0015] Preferably, it also includes a three-stage sealing chamber, which is a rectangular groove structure, with the top plate installed at the groove opening and the first-stage rectifier chamber installed inside the three-stage sealing chamber.

[0016] Preferably, the bottom plane of the three-stage rectifier chamber is provided with evenly distributed and equally sized air outlets, and a raised strip is welded on the inner wall at 1 / 3 of the height of the interior of the three-stage rectifier chamber. A secondary rectifier plate is clamped on the upper part of the raised strip, ensuring that the three-stage rectifier chamber has enough space to buffer the airflow output from the secondary rectifier plate, which has the effect of further slowing down the output airflow.

[0017] Preferably, the distribution density of the through holes in the tapered splitter plate is less than that in the secondary rectifier plate, and the distribution density of the through holes in the secondary rectifier plate is less than that in the air outlets on the bottom plane of the tertiary rectifier chamber. The through holes in the tapered splitter plate, the through holes in the secondary rectifier plate, and the air outlets on the bottom plane of the tertiary rectifier chamber are the main means of uniformly dispersing air in the three-stage structure. Through the through holes and air outlets with different density distributions in the three stages, the air is gradually refined and dispersed, thereby achieving excellent uniform airflow dispersion.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] This invention adopts a combined installation form of top plate-first stage rectifier compartment-second stage rectifier board-third stage rectifier compartment, which has the effect of simple structure and no electrical components are set inside, thus reducing the use cost, maintenance cost and the threshold of use.

[0020] The present invention has a small number of components, is easy to install, and has a high degree of integration, which can reduce air overflow and leakage.

[0021] The first-stage rectifier chamber of this invention adopts a tapered flow divider design. The large-angle taper of the plate surface and the blank planes and through holes on both sides of the cone top prevent the air supply port and air outlet from being on the same straight line without strong obstruction. Therefore, it has the ability to adapt to high-pressure air supply environment. In addition, this design also has a strong airflow dispersion effect.

[0022] The bottom planes of the secondary rectifier plate and the tertiary rectifier chamber of the present invention are used to transmit input airflow and output airflow. The distribution density of the through holes and air outlets provided on the bottom planes of the primary rectifier chamber, the secondary rectifier plate, and the tertiary rectifier chamber increases step by step, which has the effect of gradually transmitting airflow and gradually dispersing and refining airflow.

[0023] The spaces of the primary and tertiary rectifier chambers of this invention are used to buffer the airflow transmission speed, which has the effect of gradually slowing down the output airflow. Attached Figure Description

[0024] Figure 1 This is an exploded view of the overall structure of one embodiment of the present invention.

[0025] Figure 2 This is a top view schematic diagram of the top plate structure according to an embodiment of the present invention.

[0026] Figure 3 for Figure 2 Schematic diagram of the overall structure BB.

[0027] Figure 4 This is a cross-sectional view of the overall structure of one embodiment of the present invention.

[0028] Figure 5 This is a front view schematic diagram of the overall structure of an embodiment of the present invention.

[0029] In the diagram: 1. Air inlet; 2. Top plate; 3. Top plate sealing strip; 4. Primary rectifier chamber; 4.1. Protective plate; 4.2. Tapered diverter plate; 4.3. Support leg; 5. Secondary rectifier plate; 6. Tertiary rectifier chamber; 6.1. Raised strip; 7. Hanging ear; 8. Air outlet. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5This embodiment describes a flow-dispersing and equalizing airflow device, comprising a primary flow-rectifying chamber 4, which is a rectangular trough structure with rectangular strip-shaped protective plates 4.1 around its perimeter. A tapered flow-dividing plate 4.2 is fitted inside the trough. The protective plates and the tapered flow-dividing plate are fully welded together. The tapered flow-dividing plate is a plate-shaped structure with a tapered cross-section. Through holes are provided on the plate surface on both sides of the tapered angle. The four corners of the protective plate are welded and fixed to one end of four strip-shaped support legs 4.3 with equal length and right-angled cross-section. A secondary flow-rectifying plate 5 is a plate-shaped structure installed at the lower part of the primary flow-rectifying chamber and fixed in contact with the other end of the support legs. The plate surface is provided with uniform and equal-sized through holes.

[0032] The first-stage rectifier chamber 4 is the first-stage rectifier structure. Fresh air is introduced from the air supply port 1 and is distributed and dispersed at the first-stage rectifier chamber, which has the effect of uniformly and dispersedly introducing air. The protective plate and the tapered diverter plate are fully welded together, which has the effect of improving the edge sealing performance of the first-stage rectifier chamber.

[0033] The secondary rectifier plate 5, as a secondary rectifier structure, serves to receive and transmit the stream of air dispersed from the primary rectifier chamber, and to make the stream of air evenly dispersed and refined by passing through the secondary rectifier plate, and to effectively reduce the speed of the input airflow.

[0034] like Figure 1 and 3 As shown, the center line of the tapered diffuser plate 4.2 is the cone apex, and the two sides are inclined towards the end of the secondary rectifier plate to form a tapered angle. The angle range of the tapered angle is 135 degrees to 170 degrees. The large angle range of the tapered diffuser plate 4.2 can make the input airflow evenly and gently dispersed by the cone apex when the air is input. If the angle is too small, the airflow will be dispersed too quickly, resulting in the problem of air backflow and recirculation in the chamber. If the angle is too large, the input air will not be dispersed obviously.

[0035] The tapered diverter 4.2 has uniformly distributed and equally sized through holes on both sides of the cone apex, and a blank plate surface is provided between the through hole area and the cone apex. The area of ​​the blank plate surface is 25%-50% of the area of ​​the tapered diverter 4.2. The blank plate surface is opposite to the air supply port 1. When the air supply port enters the primary rectifier chamber, the blank plate surface can block the air supply port 1 and the air outlet 8 to avoid the air supply port and the air outlet being on the same straight line without strong obstruction. This makes the invention have a better air dispersion effect and also makes the invention suitable for high-pressure air supply environments.

[0036] like Figure 2 As shown, it also includes a top plate 2, which is a plate-shaped structure and is installed on the upper part of the tapered diversion plate 4.2. A circular tubular air supply port 1 is provided at the center of the upper plane of the top plate, and the air supply port penetrates the top plate.

[0037] like Figure 1As shown, it also includes a top plate sealing strip 3. The top plate sealing strip 3 is U-shaped and is installed between the top plate 2 and the upper part of the first-stage rectifier chamber 4 by rivets. The top plate sealing strip connects and seals the top plate 2 and the first-stage rectifier chamber 4. The top plate sealing strip connects and seals the upper part of the first-stage rectifier chamber and the top plate. The top plate sealing strip 3 is used to seal the top plate 2 and the third-stage rectifier chamber 6 to prevent air overflow and leakage from occurring in the overall shell of the invention. In addition, the top plate sealing strip 3 is also used to seal the top plate 2 and the first-stage rectifier chamber 4 to ensure that the input airflow entering from the air supply port 1 can only be transmitted to the next stage through the first-stage rectifier chamber 4, avoiding uneven dispersion. Secondly, it also ensures the sealing between the first-stage rectifier chamber 4 and the third-stage rectifier chamber 6, so that the airflow in the first-stage rectifier chamber 4 can only enter the third-stage rectifier chamber 6 through the second-stage rectifier plate 5, thereby achieving the purpose of uniform rectification in three stages.

[0038] like Figure 1 and 4 As shown, it also includes a three-stage rectifier compartment 6, which is a rectangular trough structure. The top plate is installed at the trough opening, and the first-stage rectifier compartment 4 is installed inside the third-stage rectifier compartment. The four corners of the outer periphery of the third-stage rectifier compartment 6 are welded with lugs 7 for easy installation and fixing.

[0039] like Figure 4 As shown, the bottom plane of the three-stage rectifier chamber is provided with evenly distributed and equally sized air outlets 8, and a protrusion 6.1 is welded on the inner wall at 1 / 3 of the height inside the three-stage rectifier chamber. A secondary rectifier plate 5 is clamped on the upper part of the protrusion, ensuring that the three-stage rectifier chamber 6 has enough space to buffer the airflow output from the secondary rectifier plate. Similarly, in this embodiment, there is a space with the same function between the secondary rectifier plate 5 and the primary rectifier chamber 4, and between the primary rectifier chamber 4 and the top plate 2, so that the airflow has sufficient space for movement and buffering during each stage of rectification, thereby improving the rectification effect step by step.

[0040] The distribution density of the through holes in the tapered diverter plate 4.2 is less than that in the secondary rectifier plate 5, and the distribution density of the through holes in the secondary rectifier plate 5 is less than that in the air outlet 8 on the bottom plane of the tertiary rectifier chamber 6.

[0041] Secondly, in this embodiment, the opening diameter of the first-stage rectifier chamber 4 is 20mm, the opening diameter of the second-stage rectifier plate 5 is 6mm, and the opening diameter of the bottom plane of the third-stage rectifier chamber 6 is 4mm. The opening diameter decreases sequentially and the holes are arranged at a certain interval. The adjacent rows of holes are staggered, so that the airflow can be further dispersed after each stage of rectification, and finally the exhaust gas is more uniform.

[0042] The through holes in the tapered flow divider 4.2, the through holes in the secondary rectifier plate 5, and the air outlets on the bottom plane of the tertiary rectifier chamber 6 are the main means of uniformly dispersing air in the three-stage structure. Through the through holes and air outlets with different densities in the three stages, the air is gradually refined and dispersed, thereby achieving excellent uniform airflow dispersion.

[0043] The working principle of this invention is as follows: the airflow at the air supply port is rectified and split through three-stage rectification, so that the output airflow speed is slowed down and evenly dispersed, which is suitable for exhaust systems in companies, homes, laboratories, etc.

[0044] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Any simple modifications, alterations, and equivalent transformations made to the above embodiments based on the technical essence of the present invention shall still fall within the protection scope of the technical solution of the invention.

Claims

1. A rectifier-type diffuser for uniform airflow, characterized in that, include: The first-stage rectifier compartment (4) is a rectangular tank structure with rectangular strip-shaped guard plates (4.1) around it. A tapered diverter plate (4.2) is installed inside the tank. The tapered diverter plate is a plate structure with a tapered cross-section. Through holes are provided on the plate surface on both sides of the cone top. The guard plate is welded to one end of four strip-shaped support legs (4.3) of equal length and with right angle cross-section at the four corners. The secondary rectifier plate (5) is a plate-shaped structure, installed at the lower part of the primary rectifier compartment and fixed in contact with the other end of the support leg, and has uniform and equal-sized through holes on the plate surface; The support leg (4.3) creates an airflow buffer space between the primary rectifier chamber (4) and the secondary rectifier plate (5); It also includes the top plate (2) and the three-stage rectifier chamber (6); The third-stage rectifier compartment (6) is a rectangular trough structure. The top plate (2) is installed at the trough opening, and the first-stage rectifier compartment (4) is installed inside the third-stage rectifier compartment. The distribution density of the through holes in the tapered diverter plate (4.2) is less than that of the through holes in the secondary rectifier plate (5), and the distribution density of the through holes in the secondary rectifier plate is less than that of the air outlets on the bottom plane of the tertiary rectifier chamber (6).

2. The rectifying and diffusing air distribution device according to claim 1, characterized in that, The center line of the tapered diverter plate (4.2) is the cone apex, and the two sides are inclined toward the end of the secondary rectifier plate (5) to form a tapered angle, with the angle range of 135 degrees to 170 degrees.

3. A flow-rectifying and diffused air distribution device according to claim 1, characterized in that, The tapered diverter plate (4.2) has uniformly distributed and equally sized through holes on both sides of the cone apex, and a blank plate surface is provided between the through hole area and the cone apex. The area of ​​the blank plate surface is 25%-50% of the area of ​​the tapered diverter plate.

4. A flow-rectifying and diffused air distribution device according to claim 1, characterized in that, The top plate (2) is a plate-shaped structure, installed on the upper part of the tapered diverter plate, and the center of the upper plane of the top plate is provided with a circular tubular air supply port (1), which penetrates the top plate.

5. A flow-rectifying and diffused air distribution device according to claim 1 or 4, characterized in that, It also includes a top plate sealing strip (3), which is U-shaped and installed between the top plate (2) and the upper part of the first-stage rectifier chamber (4), and the top plate sealing strip (3) connects and seals the top plate and the first-stage rectifier chamber.

6. A flow-rectifying and diffused air distribution device according to claim 1, characterized in that, The bottom plane of the three-stage rectifier chamber (6) is provided with air outlets (8) that are evenly distributed and of equal size, and a protrusion (6.1) is welded on the inner wall at a height of 1 / 3 inside the three-stage rectifier chamber, and a secondary rectifier plate (5) is clamped on the upper part of the protrusion.

7. A rectifier-type diffuser for uniform airflow according to claim 5, characterized in that, The top plate sealing strip (3) connects and seals the upper part of the primary rectifier compartment (4) and the top plate (2).

8. A rectifier-type diffuser for uniform airflow according to claim 1, characterized in that, The three-stage rectifier chamber (6) has lugs (7) welded to the four corners of its outer periphery.

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