High-efficiency flow-diffusing plate for tuyere

Abstract

The utility model discloses a kind of high-efficiency flow-distribution plates for air port, it includes fixed frame, the inside fixed connection of fixed frame has cold bridge isolation pad, the inside fixed connection of cold bridge isolation pad has plate body, the inside of plate body is provided with flow-distribution groove and honeycomb airflow hole, spiral flow guide rib is set at honeycomb airflow hole, the inside fixed connection of flow-distribution groove has flow guide piece, the both sides of flow guide piece are provided with heat preservation layer, the outside of heat preservation layer is provided with anti-condensation coating. Through the above structure, the airflow that is guided by spiral, intermediate honeycomb airflow hole and peripheral gradual groove, realizes the accurate matching of speed and direction at plate body export, forms the diffusion airflow with wide coverage and uniform distribution, simultaneously cooperate with the protection system formed by cold bridge isolation pad, sealing glue and anti-condensation coating, block heat loss and condensation risk, so that flow-distribution plate can also prolong the service life while improving air supply efficiency.

Description

Technical Field

[0001] This utility model relates to the field of diffuser technology, and in particular to a high-efficiency diffuser for air outlets. Background Technology

[0002] In HVAC systems and various industrial ventilation scenarios, diffusers, as core components at the air outlet end, directly determine the airflow diffusion effect, the accuracy of ambient temperature and humidity control, and the system's operating efficiency. With increasing building energy efficiency requirements, more refined industrial demands for airflow uniformity, and rising expectations for comfort in living and working environments, traditional diffusers are gradually revealing their insufficient functional adaptability, becoming a key factor restricting the overall performance improvement of ventilation systems.

[0003] Existing diffusers generally suffer from a lack of simplistic airflow guidance design, with most relying solely on simple straight grooves or circular holes for airflow diffusion, failing to control airflow speed and direction. This leads to concentrated airflow in the outlet area, resulting in limited airflow coverage and imbalances such as excessively high wind speeds and significant temperature differences in some areas, while remote areas experience insufficient airflow. This not only affects human comfort but also reduces the uniformity of temperature and humidity control in industrial settings. Furthermore, in environments with low-temperature air supply or large indoor-outdoor temperature differences, the metal frame and body of the diffuser are prone to forming cold bridges. Heat is rapidly transferred through the highly thermally conductive structure, causing the diffuser surface temperature to drop below the air dew point temperature, resulting in condensation. Condensed water droplets not only drip onto floors, equipment, or decorative surfaces, causing corrosion and mold, but also increase indoor humidity, disrupting environmental stability. To achieve a synergistic improvement in airflow diffusion uniformity, heat loss control, and service life extension, a diffuser that combines efficient airflow guidance, reliable anti-condensation performance, and low energy consumption is needed. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency diffuser for air vents to solve the problems mentioned in the background art.

[0005] This utility model also provides a high-efficiency diffuser plate for air outlets, comprising: a fixed frame, a cold bridge isolation pad fixedly connected inside the fixed frame, a plate body fixedly connected inside the cold bridge isolation pad, a diffuser groove and a honeycomb airflow hole provided inside the plate body, a spiral guide rib provided at the honeycomb airflow hole, a guide plate fixedly connected inside the diffuser groove, a heat insulation layer provided on both sides of the guide plate, and an anti-condensation coating provided on the outside of the heat insulation layer.

[0006] Preferably, the diffuser channels are evenly distributed in an array around the perimeter near the center of the plate, and the width of the diffuser channels gradually increases towards the edge.

[0007] Preferably, the cold bridge isolation pad has a ring structure and is perfectly adapted to the inner contour of the fixed frame, and the cold bridge isolation pad is made of aluminum silicate fiber felt material.

[0008] Preferably, a reinforcing block is fixedly connected to the edge of the spiral guide rib, and the outside of the reinforcing block is fixedly connected to the plate.

[0009] Preferably, the honeycomb airflow holes have a regular hexagonal hole structure, and there are multiple honeycomb airflow holes that are evenly distributed in the middle of the plate.

[0010] Preferably, the interior of the insulation layer is made of polyurethane foam.

[0011] Preferably, the anti-condensation coating is a nano-silica modified coating.

[0012] Preferably, sealant is applied between the fixing frame, the cold bridge isolation pad, and the plate.

[0013] Compared with existing technologies, the beneficial effects of this utility model are as follows: This diffuser achieves precise airflow distribution through a partitioned flow-guiding design using honeycomb holes and diffuser channels. Furthermore, the spiral guide ridges and gradually widened grooves optimize the flow pattern and improve diffusion uniformity. Additionally, the combination of aluminum silicate cold bridge isolation pads, polyurethane insulation layers, and anti-condensation coatings prevents cold bridging and condensation problems at the source. In use, each component independently performs airflow regulation or protection functions while forming an organic whole through sealed connections. This allows the diffuser to meet the requirements of high-efficiency air delivery while also ensuring operational stability and economy, making it suitable for various terminal airflow optimization scenarios in air conditioning and ventilation systems. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0015] Figure 1 This is a complete structural diagram of the high-efficiency diffuser plate for air outlets of this utility model;

[0016] Figure 2 This is a side view of the high-efficiency diffuser plate for air outlets of this utility model;

[0017] Figure 3 This is an exploded structural diagram of the high-efficiency diffuser plate for air outlets according to this utility model;

[0018] Figure 4 This is a structural diagram of the high-efficiency diffuser plate for air outlets according to this utility model;

[0019] Figure 5 This is a structural diagram of the insulation layer and anti-condensation coating of the high-efficiency diffuser plate for air outlets of this utility model.

[0020] Legend:

[0021] 1. Fixed frame; 2. Cold bridge isolation pad; 3. Plate; 4. Diffuser groove; 5. Honeycomb airflow hole; 6. Spiral guide rib; 7. Guide plate; 8. Insulation layer; 9. Anti-condensation coating; 10. Reinforcing block; 11. Sealant. Detailed Implementation

[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0023] The present invention will be further described in detail below with reference to embodiments:

[0024] Example 1

[0025] like Figure 1-5 As shown in the figure, an embodiment of the present invention provides a high-efficiency diffuser for air outlets, comprising: a fixed frame 1, a cold bridge isolation pad 2 fixedly connected inside the fixed frame 1, a plate body 3 fixedly connected inside the cold bridge isolation pad 2, a diffuser groove 4 and a honeycomb airflow hole 5 provided inside the plate body 3, a spiral guide rib 6 provided at the honeycomb airflow hole 5, a guide plate 7 fixedly connected inside the diffuser groove 4, a heat insulation layer 8 provided on both sides of the guide plate 7, and an anti-condensation coating 9 provided on the outside of the heat insulation layer 8; the diffuser groove 4 is evenly distributed in an array around the perimeter near the center of the plate body 3, and the width of the diffuser groove 4 is... The edges are gradually widened; the cold bridge isolation pad 2 is a ring structure and is completely adapted to the inner contour of the fixed frame 1. The cold bridge isolation pad 2 is made of aluminum silicate fiber felt material; the edge of the spiral guide rib 6 is fixedly connected to the reinforcing block 10, and the outside of the reinforcing block 10 is fixedly connected to the plate 3; the honeycomb airflow hole 5 is a regular hexagonal hole structure, and there are multiple honeycomb airflow holes 5 evenly distributed in the middle position of the plate 3; the interior of the insulation layer 8 is made of polyurethane foam material; the anti-condensation coating 9 is a nano-silica modified coating; the fixed frame 1, the cold bridge isolation pad 2 and the plate 3 are coated with sealant 11.

[0026] In this embodiment, the basic structure consists of a fixed frame 1, an aluminum silicate cold bridge isolation pad 2, and a plate 3. The fixed frame 1 provides stable support, the cold bridge isolation pad 2 blocks heat transfer and prevents condensation, and the sealant 11 prevents airflow leakage, ensuring that all airflow enters the plate 3. After the airflow reaches the plate 3, it is guided by the spiral guide ribs 6 to move in a spiral motion, extending the path and stabilizing the flow. The hexagonal honeycomb airflow holes 5 in the middle of the plate 3 receive the core airflow, while the outer ring array of diffuser grooves 4 receives the peripheral airflow, achieving initial uniform distribution and avoiding uneven diffusion. The guide plates 7 further guide the airflow, and the polyurethane insulation layer 8, combined with the anti-condensation coating 9, prevents condensation. Finally, the regulated airflow forms a uniformly diffused airflow at the outlet of the plate 3, achieving a highly efficient air delivery effect.

[0027] Example 2

[0028] like Figure 1-5 As shown in the figure, an embodiment of this utility model discloses a high-efficiency diffuser for air outlets, which includes a fixed frame 1. A cold bridge isolation pad 2 is fixedly connected inside the fixed frame 1, and a plate body 3 is fixedly connected to the inner side of the cold bridge isolation pad 2. First, the fixed frame 1 serves as an overall load-bearing frame, allowing other components to be stably connected. The aluminum silicate fiber felt cold bridge isolation pad 2 on its inner side, with the excellent thermal insulation properties of aluminum silicate material, can block the heat transfer path between the plate body 3 and the fixed frame 1, avoiding the boundary condensation problem caused by the thermal conductivity of the metal fixed frame 1 forming a cold bridge. At the same time, the sealant 11 between the fixed frame 1, the cold bridge isolation pad 2, and the plate body 3 forms a complete sealing system, preventing airflow leakage from structural gaps and ensuring that all airflow enters the functional area of ​​the plate body 3 to participate in regulation.

[0029] When the airflow reaches the plate 3, the flow is distributed through the partitioned design of the central honeycomb airflow holes 5 and the peripheral diffuser channels 4. The evenly distributed hexagonal honeycomb airflow holes 5 in the central area of ​​the plate 3 utilize the balanced load-bearing and flow distribution characteristics of the honeycomb structure to receive the airflow in the core area, while the diffuser channels 4 distributed around the perimeter of the plate 3 are responsible for receiving the airflow in the peripheral area. This partitioned design avoids the problem of uneven diffusion caused by concentrated airflow impact from the source, laying the foundation for subsequent precise flow control.

[0030] It should be noted that the honeycomb airflow holes 5 in the middle of the plate 3 adopt a regular hexagonal structure. This structure can form dense and uniform airflow channels within a unit area, and the flow pattern is regulated by the spiral guide ribs 6 fixed by the reinforcing block 10. Before the airflow enters the regular hexagonal channels, the spiral guide ribs 6 guide the airflow, forcing the airflow to perform a combined axial advancement and circumferential rotation along the spiral trajectory. This movement mode can not only effectively extend the airflow path and increase the contact frequency between gas molecules and the channel wall, but also maintain laminar flow stability under low Reynolds number conditions, reduce the boundary layer thickness, and avoid the problems of excessively high central flow velocity and slow edge airflow caused by direct airflow. In addition, the reinforcing block 10 can strengthen the connection strength between the spiral guide ribs 6 and the plate 3, ensuring the stability of the guide structure under high-speed airflow impact and avoiding airflow disturbance and noise caused by vibration.

[0031] The outer diffuser channels 4 are distributed in an array with a dense center and widening edges, forming a precise guiding channel in conjunction with the internal guide vanes 7. After the airflow enters the diffuser channels 4, it first changes its direction of motion under the guidance of the guide vanes 7, avoiding eddy current losses caused by the airflow impacting the plate 3 perpendicularly. The polyurethane foam insulation layers 8 on both sides of the guide vanes 7 isolate the heat exchange between the airflow and the plate 3 through excellent thermal insulation performance, preventing condensation from forming on the channel walls due to temperature differences. At the same time, the design of the diffuser channel 4, with its gradually widening channel width towards the edge, is adapted to the pressure attenuation law during the airflow diffusion process. The narrow channel section near the center maintains the airflow velocity and avoids kinetic energy loss, while the wide channel section extending towards the edge provides sufficient diffusion space for the airflow, allowing the peripheral airflow to match the velocity of the airflow in the central area, ultimately forming a uniform velocity field at the outlet of the plate 3, thus solving the problem of strong wind at the center and weak wind at the edge of the diffuser.

[0032] Example 3

[0033] like Figure 1-5 As shown in the figure, an embodiment of this utility model discloses a high-efficiency diffuser plate for air outlets, which includes a diffuser groove 4 with a guide plate 7 fixedly connected inside. Insulation layers 8 are provided on both sides of the guide plate 7, and an anti-condensation coating 9 is provided on the outside of the insulation layer 8. After the airflow is optimized, it achieves stable discharge under the action of the protective structure, while ensuring the long-term operating efficiency of the system. The nano-silica modified anti-condensation coating 9 covering the outside of the insulation layer 8 reduces condensation through a dual mechanism. First, the microporous structure constructed by nano-silica can accommodate a small amount of water vapor, and its core-shell structure can improve the stability of the coating. Second, the excellent thermal conductivity of the coating can quickly balance the temperature of the flow channel wall, maintaining a long-term condensation-free state even in extreme environments, thus preventing condensation from damaging the structure of the plate 3.

[0034] Example 4

[0035] like Figure 1-5As shown in the figure, an embodiment of this utility model discloses a high-efficiency diffuser for air vents, which includes a fixed frame 1. A cold bridge isolation pad 2 is fixedly connected inside the fixed frame 1. Due to the heat transfer between the metal fixed frame 1 and the plate body 3, a cold bridge effect is formed, causing condensation and dripping at the air vent boundary. This not only affects the comfort of the indoor environment but may also cause safety hazards such as ceiling dampness and short circuits. Therefore, it is necessary to further reduce the cold bridge effect by setting an aluminum silicate fiber felt cold bridge isolation pad 2 inside the fixed frame 1.

[0036] The aluminum silicate fiber in the cold bridge insulation pad 2 serves as the core thermal insulation material. Its superior performance stems from its unique microstructure and composition. Primarily composed of alumina and silica, it is formed into an interwoven fiber network after high-temperature melt spinning. The network is densely packed with numerous tiny pores, which trap still air, effectively blocking heat transfer through conduction, convection, and radiation. Its thermal conductivity is significantly lower than that of the metal frame and traditional insulation materials. Even under extreme conditions where the air conditioning supply temperature differs greatly from the ambient temperature, it still forms a stable thermal barrier, reducing the heat transfer efficiency between the fixed frame 1 and the plate 3. The cold bridge insulation pad 2 fits perfectly against the inner contour of the fixed frame 1 and is tightly adhered using high-temperature resistant sealant 11. This avoids thermal insulation failure caused by installation gaps and utilizes the excellent flexibility of aluminum silicate to compensate for assembly errors between the fixed frame 1 and the plate 3. Meanwhile, the material is non-flammable, has excellent chemical stability and is environmentally friendly and non-toxic. It will not age or decompose even in long-term high temperature and high humidity environments, which not only ensures safety in use but also extends the product's service life and effectively solves the problem of cold bridge condensation.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A high-efficiency diffuser for air vents, comprising: A fixed frame (1) is characterized in that a cold bridge isolation pad (2) is fixedly connected inside the fixed frame (1), a plate (3) is fixedly connected to the inner side of the cold bridge isolation pad (2), a diffuser groove (4) and a honeycomb airflow hole (5) are provided inside the plate (3), a spiral guide rib (6) is provided at the honeycomb airflow hole (5), a guide plate (7) is fixedly connected inside the diffuser groove (4), a heat insulation layer (8) is provided on both sides of the guide plate (7), and an anti-condensation coating (9) is provided on the outside of the heat insulation layer (8).

2. The high-efficiency diffuser for air vents according to claim 1, characterized in that, The diffuser channels (4) are evenly distributed in an array around the center of the plate (3), and the width of the diffuser channels (4) gradually increases towards the edge.

3. The high-efficiency diffuser for air vents according to claim 1, characterized in that, The cold bridge isolation pad (2) has a ring structure and is fully adapted to the inner contour of the fixed frame (1). The cold bridge isolation pad (2) is made of aluminum silicate fiber felt material.

4. The high-efficiency diffuser for air vents according to claim 1, characterized in that, The edge of the spiral guide rib (6) is fixedly connected to a reinforcing block (10), and the outside of the reinforcing block (10) is fixedly connected to the plate (3).

5. A high-efficiency diffuser for air vents according to claim 1, characterized in that, The honeycomb airflow holes (5) are hexagonal holes, and there are multiple honeycomb airflow holes (5) evenly distributed in the middle of the plate (3).

6. A high-efficiency diffuser for air vents according to claim 1, characterized in that, The interior of the insulation layer (8) is made of polyurethane foam.

7. A high-efficiency diffuser for air vents according to claim 1, characterized in that, The anti-condensation coating (9) is a nano-silica modified coating.

8. A high-efficiency diffuser for air vents according to claim 3, characterized in that, The fixed frame (1), the cold bridge isolation pad (2) and the plate (3) are coated with sealant (11).

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