A house fresh air system air port facilitating replacement of filter element

Abstract

This utility model discloses an air outlet for a residential fresh air system that facilitates filter replacement, relating to the technical field of residential fresh air systems. It includes a duct with a through-hole in its center for drawing external air into the room; a first curved plate and a second curved plate, each with holes on its surface, one end of the curved plate connected to the inner wall of the through-hole, and the other ends connected to each other. The area of ​​the first and second curved plates covers the area of ​​the airflow path. In this utility model, the airflow entering the flow path contacts the first and second curved plates. The airflow guided by the curved plates continues to flow and contacts an inclined plate connected to the windward side of the curved plates. Guided by the inclined plate and the curved plates, a "vortex" is formed inside the channel, thereby prolonging the contact time between the airflow and the curved plates, improving the filtration effect of the fresh air, preventing impurities from entering subsequent channels with the airflow, and further reducing the total amount of impurities entering the room.

Description

Technical Field

[0001] This utility model relates to the technical field of building fresh air systems, specifically to a building fresh air system vent that facilitates filter replacement. Background Technology

[0002] In the field of indoor air environment control, fresh air systems, as core equipment for improving indoor air quality, have one of their core functions: introducing fresh outdoor air into the room while simultaneously removing particulate matter, dust, pollen, and other impurities to ensure the respiratory health of indoor occupants. To achieve this purification goal, filtration systems are an indispensable component of fresh air systems.

[0003] Currently, the filtration schemes used in traditional fresh air systems are relatively simple. Their typical structure is as follows: a vertical filter plate is fixedly installed in the middle of the airflow path of the ventilation duct. The size of the filter plate is roughly matched with the cross-sectional size of the ventilation duct, and it intercepts impurities in the airflow only through the pore structure of the filter material itself.

[0004] However, this traditional filtration structure has obvious technical defects in practical applications: because the filter plate is arranged vertically in the ventilation duct, the airflow direction in the duct is perpendicular to the filter surface of the filter plate. The airflow passes through the filter plate at a relatively fast speed, resulting in a very short contact time between impurities in the airflow and the filter material. Some small particles or light pollutants are difficult to be effectively captured by the filter material and then enter the room with the airflow, which greatly reduces the filtration effect. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a fresh air vent for a house ventilation system that facilitates filter replacement.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] An air vent for a residential fresh air system that facilitates filter replacement includes:

[0008] The duct has a through hole in the middle to draw outside air into the room;

[0009] The first and second curved plates have holes on their surfaces. One end of each curved plate is connected to the inner wall of the through hole, and the other end is connected to each other. The area of ​​the first and second curved plates covers the area of ​​the wind flow path. On the wind flow path, the concave surface of the first and second curved plates is the windward surface.

[0010] An inclined plate is connected to the windward side of the first curved plate and the second curved plate, and a channel is formed between adjacent inclined plates and the surfaces of the first and second curved plates. The inclined end of the inclined plate faces the wind flow path.

[0011] When external wind enters, the first curved plate, the second curved plate, and the inclined plate guide the wind force, and the wind forms a "vortex" in the channel.

[0012] Preferably, one end of the connection between the first and second curved plates is horizontally parallel to the top inner wall of the through hole, and the connection between the first and second curved plates is located at the center of the wind flow path.

[0013] Preferably, the windward surface of the inclined plate is configured as a concave structure, so that when the wind comes into contact with the windward surface of the inclined plate, the wind flows along the concave structure.

[0014] Preferably, the non-windward surface of the inclined plate is provided with a guide ridge extending along the wind flow direction. The cross-section of the guide ridge is arc-shaped, and the extension direction of the guide ridge is consistent with the rotation direction of the "vortex".

[0015] Preferably, the angle between the inclined plate and the windward surface of the first and second curved plates is 30°-60°, and the projected area of ​​the inclined plate on the surfaces of the first and second curved plates covers the channel area formed by the adjacent inclined plates.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] The airflow entering the flow path contacts the first and second curved plates. Guided by the curved plates, the airflow continues to flow and comes into contact with the inclined plate connected to the windward side of the curved plates. Guided by the inclined plate and the curved plates, a "vortex" is formed inside the channel, which prolongs the contact time between the wind and the curved plates, improves the filtration effect of fresh air, prevents impurities from entering the subsequent channels with the airflow, and further reduces the total amount of impurities entering the room. Attached Figure Description

[0018] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0020] Figure 2 This is a side sectional three-dimensional structural diagram of the present invention;

[0021] Figure 3This is a cross-sectional planar structural diagram of the present invention.

[0022] The diagram is labeled as follows: 1. Pipe; 2. First bend of the arc plate; 3. Second bend of the arc plate; 4. Inclined plate. Detailed Implementation

[0023] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0024] Example

[0025] like Figure 1-3 As shown, a home ventilation system vent that facilitates filter replacement includes:

[0026] Pipe 1, with a through hole in its middle for drawing outside air into the room;

[0027] The first curved plate 2 and the second curved plate 3 have holes on their surfaces. One end of their curved plates is connected to the inner wall of the through hole, and the other end is connected to each other. The area of ​​the first curved plate 2 and the second curved plate 3 covers the area of ​​the wind flow path. On the wind flow path, the concave surface of the first curved plate 2 and the second curved plate 3 is the windward surface.

[0028] Inclined plate 4 is connected to the windward side of the first curved plate 2 and the second curved plate 3, and a channel is formed between adjacent inclined plates 4 and the surfaces of the first curved plate 2 and the second curved plate 3. The inclined end of the inclined plate 4 faces the wind flow path.

[0029] When external wind enters, the first curved plate 2, the second curved plate 3, and the inclined plate 4 guide the wind force, and the wind forms a "vortex" in the channel.

[0030] Specifically: After the fresh air system is started, external air is drawn into the air vent through the through hole in the middle of the pipe 1 under the negative pressure of the system. It directly enters the preset airflow path, providing the initial airflow for the indoor fresh air delivery. The airflow entering the flow path first contacts the first curved plate 2 and the second curved plate 3. At this time, the "concave surface" of the two curved plates is the windward surface. The airflow comes into contact with the windward surface and is naturally guided by the curvature of the curved plate to flow along the curved path of the windward surface. Then the airflow will come into contact with the inclined plate 4 connected to the windward surface of the curved plate. The inclined plate 4 blocks and guides the airflow, thereby guiding the airflow into the interior of the channel. At this time, the airflow inside the channel comes into contact with the incoming airflow and the airflow passing through the curved plate. The airflow after contact generates an impact force, thereby generating a relatively stable vortex inside the channel. At this time, the vortex comes into contact with the surface of the hole, thereby prolonging the contact time between the airflow and the curved plate, improving the filtration effect of the fresh air, preventing impurities from entering the subsequent channels with the airflow, and further reducing the total amount of impurities entering the room.

[0031] In this embodiment, one end of the connection between the first curved plate 2 and the second curved plate 3 is horizontally parallel to the top inner wall of the through hole, and the connection between the first curved plate 2 and the second curved plate 3 is located at the center of the wind flow path.

[0032] Specifically: The two curved plates extend symmetrically towards the inner wall of the through hole from the center of the flow path. The connecting end is in the center, and the other end is connected to the inner wall of the two sides of the through hole, forming a "centrally divergent" symmetrical flow channel. After the external air enters, it will be evenly distributed to the two side channels by the symmetrical curved plates, avoiding the flow deviation phenomenon of "airflow accumulation on one side and airflow sparse on the other side" caused by the offset of the connecting end. This ensures that the flow rate and velocity of all sub-airflows are completely consistent after being divided by the inclined plate 4, and there will be no situation of "edge airflow passing through the hole quickly and central airflow stagnating". This ensures that the interception efficiency of the hole for large particles of impurities is uniform and the initial filtration effect is more stable.

[0033] In this embodiment, the windward surface of the inclined plate 4 is set as a concave structure. When the wind comes into contact with the windward surface of the inclined plate 4, the wind flows along the concave structure.

[0034] Specifically: If the windward surface of the inclined plate 4 is flat or convex, the airflow will cause local turbulence such as airflow rebound and diversion due to "direct impact" when it comes into contact with the airflow; while the concave curved surface allows the airflow to "fit in" and slide naturally into the channel along the concave arc without obvious impact points, which completely reduces the airflow breakup caused by impact, keeps the airflow in a continuous and complete flow state, avoids the airflow from spreading to the outside of the channel, and ensures that all airflow can be concentrated into the inside of the channel, providing a sufficient and uniform airflow source for "collision of old and new airflow to form vortices" in the channel.

[0035] In this embodiment: the non-windward surface of the inclined plate 4 is provided with a guide ridge extending along the wind flow direction. The cross-section of the guide ridge is arc-shaped, and the extension direction of the guide ridge is consistent with the rotation direction of the "vortex".

[0036] Specifically: When a vortex rotates naturally within a channel, it is prone to "shifting outwards from the channel" or "locally stagnating" due to slight differences in airflow velocity, such as slower airflow at the edges and faster airflow at the center. However, the guide ridges extend along the direction of vortex rotation, which is equivalent to providing an "arc-shaped guide track" for the vortex. When the vortex rotates, it will flow along the arc-shaped surface of the ridges and be constrained in the central area of ​​the channel, avoiding shifting to the sides and ensuring that the vortex always rotates stably within the preset channel space.

[0037] In this embodiment, the angle between the inclined plate 4 and the windward surfaces of the first curved plate 2 and the second curved plate 3 is 30°-60°, and the projected area of ​​the inclined plate 4 on the surfaces of the first curved plate 2 and the second curved plate 3 covers the channel area formed by the adjacent inclined plates 4.

[0038] Specifically: If the included angle is less than 30°: the inclined plate 4 is too gentle. When the airflow flows along the windward side of the curved plate, it is easy to "slide along the plate through the channel" instead of entering the channel, resulting in insufficient airflow in the channel and difficulty in forming vortices. At the same time, the gentle angle will prolong the airflow path, increase local stagnation, and reduce the air supply efficiency.

[0039] If the angle is greater than 60°: the inclined plate 4 is too steep, and the airflow will generate "strong impact resistance" when it comes into contact with it, similar to hitting a vertical baffle, which will cause local turbulence. This will not only destroy the stability of the vortex, but also increase the load on the fan, requiring higher power to overcome the resistance, and increase energy consumption.

[0040] Angle 30°-60°: The airflow can form a "gentle and directional downward trajectory" along the inclined plate 4, which will not slide across the channel or generate a strong impact, and can enter the interior of the channel efficiently, providing a "sufficient and stable airflow source" for the formation of vortices.

[0041] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A housing fresh air system air outlet facilitating replacement of a filter cartridge, characterized by: include: The duct has a through hole in the middle to draw outside air into the room; The first and second curved plates have holes on their surfaces. One end of each curved plate is connected to the inner wall of the through hole, and the other end is connected to each other. The area of ​​the first and second curved plates covers the area of ​​the wind flow path. On the wind flow path, the concave surface of the first and second curved plates is the windward surface. An inclined plate is connected to the windward side of the first curved plate and the second curved plate, and a channel is formed between adjacent inclined plates and the surfaces of the first and second curved plates. The inclined end of the inclined plate faces the wind flow path. When external wind enters, the first curved plate, the second curved plate, and the inclined plate guide the wind force, and the wind forms a "vortex" in the channel.

2. The housing fresh air system air outlet with filter core convenient to replace according to claim 1, characterized in that: The top inner wall of the through hole is horizontally parallel to one end of the connection between the first and second curved plates, and the connection between the first and second curved plates is located at the center of the wind flow path.

3. The housing fresh air system air outlet with filter core convenient to replace according to claim 2, characterized in that: The windward side of the inclined plate is designed with a concave structure. When the wind comes into contact with the windward side of the inclined plate, the wind flows along the concave structure.

4. The housing fresh air system air outlet with filter core convenient to replace according to claim 3, characterized in that: The non-windward side of the inclined plate is provided with a guide ridge extending along the direction of wind flow. The cross-section of the guide ridge is arc-shaped, and the extension direction of the guide ridge is consistent with the rotation direction of the "vortex".

5. The housing fresh air system air outlet with filter core replacement convenience according to claim 4, characterized in that: The angle between the inclined plate and the windward surface of the first and second curved plates is 30°-60°, and the projected area of ​​the inclined plate on the surface of the first and second curved plates covers the area of ​​the channel formed by the adjacent inclined plates.

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