A multi-faceted air intake fresh air filter box
The fresh air filter box, with its multi-faceted air intake and air guide vane design, solves the problems of small air intake area and uneven airflow distribution in traditional fresh air filter boxes, achieving high-efficiency filtration and flexible installation to meet different usage needs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 广东鹏锦智能装备股份有限公司
- Filing Date
- 2025-07-25
- Publication Date
- 2026-07-03
AI Technical Summary
Traditional fresh air filter boxes have a single-sided air intake, resulting in a small air intake area, low dust holding capacity and filtration efficiency, uneven airflow distribution, insufficient utilization of filter media, and easy formation of local high-pressure areas.
The design features a multi-faceted air intake structure with multiple air inlets located on multiple sides of the housing. Airflow is guided by guide vanes, and the opening and closing of the air inlets are controlled by a telescopic cover and a drive mechanism. It supports switching between single-face and multi-faceted air intake modes. The filter assembly is installed in both external and internal styles.
It improves the air intake area and filtration efficiency, evens out airflow distribution, reduces turbulence, enhances filter media utilization, has a compact structure, is easy to assemble and disassemble, has low cost, and can adapt to different environmental installation needs.
Smart Images

Figure CN224454790U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air purification technology, and to a multi-faceted air intake fresh air filter box. Background Technology
[0002] One of the important functions of a fresh air filter box is to provide clean, fresh air for indoor spaces. Traditional fresh air filter boxes are generally single-sided air intakes, but this structure has certain limitations: 1. The air intake area is small, resulting in lower dust holding capacity and filtration efficiency; 2. It is easy to cause uneven airflow distribution, resulting in a filter material utilization rate of less than 60%, and it is easy to form local high-pressure areas (measured pressure loss ≥160Pa). Utility Model Content
[0003] To address the technical problems in the prior art, this utility model provides a multi-faceted air intake fresh air filter box, including a box body with an air inlet and an air outlet. A filter assembly is installed inside the air inlet through a support member. The air inlets include multiple air inlets, which are respectively located on multiple adjacent surfaces of the box body and are arranged opposite to the air outlet. The box body is provided with multiple guide vanes, which are respectively located between two adjacent air inlets. One end of each guide vane is fixedly connected to the inner wall of the box body, and the other end is a free extension end.
[0004] Furthermore, the air inlet includes three, one of which is directly opposite the air outlet, and the other two are symmetrically distributed on both sides.
[0005] Furthermore, the air guide plate is bent toward the air inlet side on both sides.
[0006] Furthermore, a telescopic cover is installed at the air inlet. The telescopic cover is movably connected to the air inlet via a drive mechanism. The telescopic cover closes or opens the air inlet under the action of the drive mechanism.
[0007] Furthermore, the telescopic cover is made of 304 stainless steel.
[0008] Furthermore, the filter assembly and the air inlet can be installed in an external or internal manner.
[0009] Beneficial effects:
[0010] 1. In this utility model, the setting of multiple air inlets enables multi-faceted coordinated air intake, increases the air intake area, improves dust holding capacity and filtration efficiency. Combined with the setting of guide vanes, the airflow can be guided and distributed, improving the utilization rate of filter media. At the same time, it can also avoid the generation of eddies inside the box, ensuring uniform and smooth airflow. In addition, this fresh air filter box occupies a small area in the structural equipment components, is easy to disassemble and replace, and has low cost.
[0011] 2. In this utility model, the three air inlets, which are symmetrically distributed, can further avoid the generation of eddies inside the box and ensure a uniform and smooth airflow. Combined with the design of the guide vanes bending to both sides, it can reduce wind resistance and facilitate the guidance and distribution of airflow.
[0012] 3. In this utility model, the telescopic cover and drive mechanism enable convenient control of the opening and closing of the air inlet, support switching between single-sided or multi-sided air inlet modes, and meet different usage needs; combined with the use of 304 stainless steel, the structural strength and service life of the telescopic cover can be improved.
[0013] 4. The present invention can adapt to different installation requirements by setting up external and internal installation methods. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a schematic diagram showing the flow state of the air as it passes through the housing.
[0017] Explanation of reference numerals in the attached figures:
[0018] 1. Housing; 2. Air inlet; 3. Air outlet; 4. Filter assembly; 5. Air guide vane. Detailed Implementation
[0019] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0020] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0022] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0023] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0024] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0025] This utility model provides a multi-faceted air intake fresh air filter box, such as Figure 1 and Figure 2 As shown, the device includes a housing 1, which has an air inlet 2 and an air outlet 3. The housing 1 has a streamlined frame. A filter assembly 4 is installed inside the air inlet 2 via a support. Multiple air inlets 2 are located on adjacent surfaces of the housing 1 and are opposite to the air outlet 3. Specifically, there are three air inlets 2, one of which is directly opposite the air outlet 3, and the other two are symmetrically distributed on either side of the air inlet 2 opposite the air outlet 3. Multiple guide vanes 5 are provided inside the housing 1, located between adjacent air inlets 2. One end of each guide vane 5 is fixedly connected to the inner wall of the housing 1, and the other end is a free-extending end. Figure 2 The middle arrow indicates the direction of wind flow.
[0026] In this embodiment, the arrangement of three air inlets 2 enables multi-faceted coordinated air intake, increasing the air intake area, improving dust holding capacity and filtration efficiency. Combined with the arrangement of the guide vanes 5, the airflow can be guided and distributed, improving the utilization rate of the filter material. At the same time, it can also prevent the generation of eddies inside the housing 1, ensuring uniform and smooth airflow. In addition, this fresh air filter box occupies a small area in the structural equipment components, is easy to disassemble and replace, and has low cost.
[0027] In this utility model, preferably, such as Figure 2 As shown, the guide vane 5 is bent toward the air inlet 2 on both sides.
[0028] In this embodiment, the wind resistance can be reduced and the airflow can be easily guided and distributed by the bend of the guide plate 5 to both sides.
[0029] In this utility model, preferably, such as Figure 1 and Figure 2 As shown, a telescopic cover is installed at the air inlet 2. The telescopic cover is movably connected to the air inlet 2 through a drive mechanism. The telescopic cover closes or opens the air inlet 2 under the action of the drive mechanism. The telescopic cover is made of 304 stainless steel.
[0030] In this embodiment, the opening and closing of the air inlet 2 can be easily controlled by the telescopic cover and the drive mechanism, supporting the switching of single-sided or multi-sided air intake modes to meet different usage needs. In addition, the direction of air intake can be adjusted by the telescopic cover. Combined with the fact that the material is 304 stainless steel, the structural strength and service life of the telescopic cover can be improved.
[0031] In this utility model, preferably, such as Figure 1 and Figure 2 As shown, the filter assembly 4 and the air inlet 2 are installed in two ways: external and internal (not shown in the figure). The filter assembly 4 is used to intercept particulate matter carried in the fresh air and includes a pre-filter and a medium-efficiency filter installed at intervals from the outside to the inside.
[0032] In this embodiment, the use of both external and internal (not shown in the figure) installation methods can adapt to different environmental installation requirements.
[0033] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0034] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. A multi-faceted air intake fresh air filter box, comprising a box body (1), wherein the box body (1) is provided with an air inlet (2) and an air outlet (3), and a filter assembly (4) is installed in the air inlet (2) by means of a support member, characterized in that, The air inlet (2) includes multiple inlets, which are located on multiple adjacent surfaces of the housing (1) and are opposite to the air outlet (3). Multiple guide vanes (5) are provided inside the housing (1), which are located between two adjacent air inlets (2). One end of the guide vane (5) is fixedly connected to the inner wall of the housing (1), and the other end is a free extension end.
2. The multi-face air intake fresh air filtering box according to claim 1, characterized in that, The air inlet (2) includes three, one of which is directly opposite the air outlet (3), and the other two are symmetrically distributed on both sides.
3. The multi-face air intake fresh air filtering box according to claim 2, characterized in that, The guide vane (5) is bent toward the air inlet (2) on both sides.
4. A multi-faceted air intake fresh air filter box according to any one of claims 1 to 3, characterized in that, A telescopic cover is installed at the air inlet (2). The telescopic cover is movably connected to the air inlet (2) through a drive mechanism. The telescopic cover closes or opens the air inlet (2) under the action of the drive mechanism.
5. The multi-face air intake fresh air filtering box according to claim 4, characterized in that, The telescopic cover is made of 304 stainless steel.
6. The multi-face air intake fresh air filtering box according to claim 1, characterized in that, The filter assembly (4) and the air inlet (2) can be installed in either an external or internal manner.