A porous uniform speed type air volume detection device

Abstract

The present application relates to the technical field of air volume detection, and particularly relates to a multi-hole uniform-speed air volume detection device, which comprises a shell, one side of the shell is fixedly connected with an air inlet flange, the other side of the shell is fixedly connected with an air outlet flange, the inner wall of the shell is fixedly installed with a partition plate on the side close to the air inlet flange, equidistant through holes are formed in the partition plate in a ring shape, an air volume centering mechanism is arranged on the inner side of the partition plate, and an air volume uniformity detection mechanism is arranged on the inner side of the air volume centering mechanism. The air volume centering mechanism and the air volume uniformity detection mechanism are used to effectively detect the air volume uniformity of the air outlet, the elliptical movable plate is used to extrude the annular movable sleeve under different air volume, so as to drive the conductive contact piece in the arc-shaped sliding block to contact and electrify the conductive block, the accurate judgment of the air volume uniformity is realized according to whether the conductive block is electrified under the same gear, and the accurate detection of the air volume uniformity is realized.

Description

Technical Field

[0001] This invention relates to the field of airflow detection technology, and in particular to a multi-hole uniform airflow detection device. Background Technology

[0002] As living standards continue to improve, more and more consumers are paying attention to the comfort of using home appliances. The uniformity of airflow from products such as electric fans and hair dryers directly determines the user experience, so it is necessary to test the airflow of such products.

[0003] Existing airflow detection devices can only detect the size of the airflow during use. However, large airflow and high speed obviously cannot meet the needs of comfort. Existing airflow detection devices cannot effectively detect the uniformity of the air outlet. Therefore, a multi-hole uniform speed airflow detection device is proposed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a multi-hole uniform airflow detection device, which solves the technical problem of being unable to detect the uniformity of airflow.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a multi-hole uniform air volume detection device, comprising a housing, an air inlet flange fixedly connected to one side of the housing, an air outlet flange fixedly connected to the other side of the housing, a partition plate fixedly installed on the inner wall of the housing near the air inlet flange, through holes evenly spaced in a ring on the partition plate, an air volume centering mechanism provided on the inner side of the partition plate, an air volume uniformity detection mechanism provided on the inner side of the air volume centering mechanism, a controller provided on the outer side of the air volume uniformity detection mechanism, and support rods fixedly installed at equal intervals on the side wall of the controller, the ends of the support rods being fixedly connected to the inner wall of the air outlet flange;

[0006] The air volume centering mechanism includes a positioning sleeve fixedly connected to the inner wall of the housing. The positioning sleeve is located inside the partition. An elastic washer is fixedly fitted to the inner wall of the positioning sleeve, and an elliptical movable plate is fixedly connected to the outer side of the elastic washer.

[0007] Preferably, the airflow uniformity detection mechanism includes an arc-shaped limiting rail fixedly connected to the inner wall of the housing. The arc-shaped limiting rail is evenly spaced along the circumferential inner wall of the housing. The arc-shaped limiting rail is located between the airflow centering mechanism and the air outlet flange. An annular movable sleeve is sleeved on the upper end of the arc-shaped limiting rail. An arc-shaped slider is fixedly connected to the annular movable sleeve at an angle. The arc-shaped sliders are all sleeved on the outer side of the arc-shaped limiting rail.

[0008] Each of the arc-shaped limiting rails has a limiting rod fixedly connected to the side near the air outlet flange, and the end of each limiting rod is fixedly connected to the controller.

[0009] Preferably, conductive blocks are fixedly connected at equal intervals on the limiting rod, and a conductive contact is fixedly connected at the center of the inner wall of the arc-shaped slider. The resistance value of the conductive blocks gradually decreases along the airflow direction.

[0010] Both the conductive contact and the conductive block are electrically connected to the controller.

[0011] The center line connecting the elliptical movable plate, the annular movable sleeve, and the arc-shaped limiting rail all coincides with the axis of the housing.

[0012] The curvature of the arc-shaped limiting rail, the arc-shaped slider, and the limiting rod all converge towards the center of the controller.

[0013] By employing the above technical solution, the present invention provides a multi-hole uniform velocity airflow detection device, which has at least the following beneficial effects:

[0014] 1. This invention achieves effective detection of airflow uniformity at the air outlet through an airflow centering mechanism and an airflow uniformity detection mechanism. Simultaneously, the elliptical movable plate squeezes the annular movable sleeve under different airflow levels, thereby causing the conductive contact piece inside the arc-shaped slider to contact and energize the conductive block. Based on whether the conductive block is energized at the same speed setting, the airflow uniformity can be accurately judged, achieving precise detection of airflow uniformity and ensuring user comfort.

[0015] 2. This invention achieves uniform pre-distribution of airflow at the outlet through partitions and equally spaced annularly distributed through holes, realizing uniformity pre-processing before airflow detection. This ensures that the pre-processed, evenly distributed airflow acts on the airflow centering mechanism, further improving the detection accuracy of airflow uniformity.

[0016] 3. This invention achieves synchronous detection of airflow uniformity at different air volumes by using conductive blocks with different resistance values ​​arranged at equal intervals along the upper end of the limiting rod. Based on the different sliding distances of the annular movable sleeve at different air volumes, the conductive blocks at each gear position are brought into contact during the sliding process of the annular movable sleeve, thus achieving the effect of accurate detection of airflow uniformity at different air volume levels.

[0017] 4. The present invention uses an elliptical movable plate and an annular movable sleeve to be aligned and set together with an arc-shaped limiting rail, so that when the air volume drives the annular movable sleeve to move, it always acts on the center of the air volume uniformity detection mechanism, which effectively ensures the detection accuracy of the uniformity detection at the center of the air volume and reduces the detection result error caused by the air volume deviation. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0019] Figure 1 This is a front-view stereoscopic structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the bottom-view three-dimensional structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the internal cross-sectional three-dimensional structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the internal cross-sectional structure of the present invention;

[0023] Figure 5 For the present invention Figure 4 Enlarged schematic diagram of the structure at point A in the middle.

[0024] In the diagram: 1. Housing; 2. Inlet flange; 3. Outlet flange; 4. Partition plate; 5. Through hole; 6. Air volume centering mechanism; 60. Positioning sleeve; 61. Elastic washer; 62. Elliptical movable plate; 7. Air volume uniformity detection mechanism; 70. Arc-shaped limit rail; 71. Annular movable sleeve; 72. Arc-shaped slider; 73. Limiting rod; 74. Conductive block; 75. Conductive contact piece; 8. Controller; 9. Support rod. Detailed Implementation

[0025] 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.

[0026] Example 1

[0027] Please refer to Figures 1-3A multi-hole uniform airflow detection device includes a housing 1. An air inlet flange 2 is fixedly connected to one side of the housing 1. Before airflow detection begins, the air inlet flange 2 is first installed on the air outlet side of the device to be tested. Then, the device is turned on to detect the airflow. An air outlet flange 3 is fixedly connected to the other side of the housing 1. A partition 4 is fixedly installed on the inner wall of the housing 1 near the air inlet flange 2. The partition 4 has through holes 5 arranged in a ring at equal intervals. The airflow is detected through the partition 4 and the through holes 5 arranged in a ring at equal intervals. The air volume is pre-divided evenly to achieve uniformity pre-processing before air volume detection. This ensures that the pre-processed air volume is evenly distributed and acts on the air volume centering mechanism 6, further improving the detection accuracy of air volume uniformity detection. The inner side of the partition 4 is provided with the air volume centering mechanism 6, and the inner side of the air volume centering mechanism 6 is provided with the air volume uniformity detection mechanism 7. The outer side of the air volume uniformity detection mechanism 7 is provided with the controller 8. The side wall of the controller 8 is fixedly installed with support rods 9 at equal intervals, and the end of the support rods 9 is fixedly connected to the inner wall of the air outlet flange 3.

[0028] The airflow centering mechanism 6 includes a positioning sleeve 60 fixedly connected to the inner wall of the housing 1. The positioning sleeve 60 is located inside the partition 4. An elastic washer 61 is fixedly sleeved on the inner wall of the positioning sleeve 60. An elliptical movable plate 62 is fixedly connected to the outer side of the elastic washer 61. During detection, the airflow continuously impacts the elliptical movable plate 62, causing the elastic washer 61 to undergo elastic deformation. This causes the elliptical movable plate 62 to move towards one side of the airflow uniformity detection mechanism 7. By aligning the elliptical movable plate 62 and the annular movable sleeve 71, and cooperating with the arc-shaped limiting rail 70, the airflow driving the annular movable sleeve 71 always acts on the center of the airflow uniformity detection mechanism 7, effectively ensuring the detection accuracy of the uniformity detection at the center of the airflow and reducing the detection result error caused by airflow deviation.

[0029] Example 2

[0030] Please refer to Figures 3-4 This embodiment is basically the same as Embodiment 1. This embodiment is made on the basis of Embodiment 1 and has the same beneficial effects as Embodiment 1. The same parts can be referred to each other, and will not be described in detail here.

[0031] The airflow uniformity detection mechanism 7 includes an arc-shaped limiting rail 70 fixedly connected to the inner wall of the housing 1. The arc-shaped limiting rail 70 is evenly spaced along the circumferential inner wall of the housing 1. The arc-shaped limiting rail 70 is located between the airflow centering mechanism 6 and the air outlet flange 3. An annular movable sleeve 71 is sleeved on the upper end of the arc-shaped limiting rail 70. An arc-shaped slider 72 is fixedly connected to the annular movable sleeve 71 at an angle. The arc-shaped sliders 72 are all sleeved on the outer side of the arc-shaped limiting rail 70. When the elliptical movable plate 62 moves, its short axis side acts on the side wall of the annular movable sleeve 71, so that under the action of wind force, the annular movable sleeve 71 slides along the arc-shaped limiting rail 70, thereby driving the conductive contact 75 inside the arc-shaped slider 72 to contact and energize the conductive block 74 on the limiting rod 73.

[0032] As a preferred technical solution in this embodiment, the arc-shaped limiting rail 70 is fixedly connected to the side of the air outlet flange 3. The ends of the limiting rods 73 are fixedly connected to the controller 8. The controller 8 is informed whether each conductive block 74 with the same resistance value is energized. The electrical signal when energized is transmitted to the controller 8, thereby determining whether the air volume is uniform. When the conductive blocks 74 with the same resistance value are energized synchronously, the air volume on the surface is uniform and blown out in the correct direction. When the conductive blocks 74 with the same resistance value are not energized synchronously, the air volume on the surface is deviated and is not blown out in the correct direction.

[0033] Example 3

[0034] Please refer to Figures 4-5 This embodiment is basically the same as Embodiment 1. This embodiment is made on the basis of Embodiment 1 and has the same beneficial effects as Embodiment 1. The same parts can be referred to each other, and will not be described in detail here.

[0035] Conductive blocks 74 are fixedly connected at equal intervals on the limiting rod 73. A conductive contact 75 is fixedly connected at the center of the inner wall of the arc-shaped slider 72. The resistance of the conductive blocks 74 gradually decreases along the airflow direction. When the arc-shaped slider 72 slides along the arc-shaped limiting rail 70, the greater the airflow, the more obvious the deformation of the elastic washer 61. At this time, the displacement distance of the elliptical movable plate 62 is greater, which in turn makes the sliding distance of the arc-shaped slider 72 larger. At this time, it contacts different conductive blocks 74, thereby realizing the synchronous detection of uniformity at different airflow. By using conductive blocks 74 with different resistance values ​​set at equal intervals along the upper end of the limiting rod 73, the synchronous detection of the airflow uniformity at different airflow is achieved. According to the different sliding distances of the annular movable sleeve 71 at different airflows, the contact of the conductive blocks 74 at each gear position is driven during the sliding of the annular movable sleeve 71, thus achieving the effect of accurate detection of airflow uniformity at different airflow levels.

[0036] As a preferred technical solution in this embodiment, both the conductive contact 75 and the conductive block 74 are electrically connected to the controller 8, so that the electrical signals of the conductive contact 75 and the conductive block 74 are transmitted to the controller 8 to realize the detection during the air volume detection process.

[0037] As a preferred technical solution in this embodiment, the center line connecting the elliptical movable plate 62, the annular movable sleeve 71 and the arc-shaped limiting rail 70 all coincide with the axis of the housing 1, so that the air volume centering mechanism 6 and the air volume uniformity detection mechanism 7 are located at the same center, eliminating the influence of external variables, thereby achieving accurate detection of air volume uniformity.

[0038] As a preferred technical solution in this embodiment, the bending directions of the arc-shaped limiting rail 70, the arc-shaped slider 72, and the limiting rod 73 all converge towards the center of the controller 8. By aligning the elliptical movable plate 62 and the annular movable sleeve 71, and cooperating with the arc-shaped limiting rail 70, the airflow driving the annular movable sleeve 71 to move always acts on the center of the airflow uniformity detection mechanism 7, effectively ensuring the detection accuracy of the uniformity detection at the center of the airflow and reducing the detection result error caused by airflow deviation.

[0039] The control method of this invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Furthermore, since this invention is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail here.

[0040] It should be noted that 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 process, method, article, or apparatus.

[0041] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. Since the above embodiments are substantially similar to the method embodiments, their descriptions are relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-hole uniform velocity airflow detection device, comprising a housing (1), characterized in that: An air inlet flange (2) is fixedly connected to one side of the housing (1), and an air outlet flange (3) is fixedly connected to the other side of the housing (1). A partition plate (4) is fixedly installed on the inner wall of the housing (1) near the air inlet flange (2). Through holes (5) are opened in a ring at equal intervals on the partition plate (4). An air volume centering mechanism (6) is provided on the inner side of the partition plate (4). An air volume uniformity detection mechanism (7) is provided on the inner side of the air volume centering mechanism (6). A controller (8) is provided on the outer side of the air volume uniformity detection mechanism (7). A support rod (9) is fixedly installed at equal intervals on the side wall of the controller (8). The end of the support rod (9) is fixedly connected to the inner wall of the air outlet flange (3). The air volume centering mechanism (6) includes a positioning sleeve (60) fixedly connected to the inner wall of the housing (1). The positioning sleeve (60) is located inside the partition (4). An elastic washer (61) is fixedly sleeved on the inner wall of the positioning sleeve (60). An elliptical movable plate (62) is fixedly connected to the outer side of the elastic washer (61). The air volume uniformity detection mechanism (7) includes an arc-shaped limiting rail (70) fixedly connected to the inner wall of the housing (1). The arc-shaped limiting rail (70) is evenly spaced along the circumferential inner wall of the housing (1). The arc-shaped limiting rail (70) is located between the air volume centering mechanism (6) and the air outlet flange (3). An annular movable sleeve (71) is sleeved on the upper end of the arc-shaped limiting rail (70). An arc-shaped slider (72) is fixedly connected to the annular movable sleeve (71) at an angle. The arc-shaped slider (72) is sleeved on the outer side of the arc-shaped limiting rail (70).

2. The multi-hole uniform velocity airflow detection device according to claim 1, characterized in that: The arc-shaped limiting rail (70) is fixedly connected to a limiting rod (73) on the side near the air outlet flange (3), and the end of the limiting rod (73) is fixedly connected to the controller (8).

3. The multi-hole uniform velocity airflow detection device according to claim 2, characterized in that: The limiting rod (73) is fixedly connected with conductive blocks (74) at equal intervals, and the center of the inner wall of the arc-shaped slider (72) is fixedly connected with a conductive contact piece (75). The resistance value of the conductive block (74) gradually decreases along the airflow direction.

4. The multi-hole uniform velocity airflow detection device according to claim 3, characterized in that: Both the conductive contact (75) and the conductive block (74) are electrically connected to the controller (8).

5. The multi-hole uniform velocity airflow detection device according to claim 1, characterized in that: The center line connecting the elliptical movable plate (62), the annular movable sleeve (71), and the arc-shaped limiting rail (70) all coincides with the axis of the housing (1).

6. The multi-hole uniform velocity airflow detection device according to claim 2, characterized in that: The curvature of the arc-shaped limiting rail (70), the arc-shaped slider (72), and the limiting rod (73) all converges toward the center of the controller (8).

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