Adjustable noise reduction ventilation grille

Abstract

The utility model relates to an adjustable noise reduction ventilation grille which comprises a plurality of first grille strips and rotating shafts, the number of the rotating shafts is consistent with that of the first grille strips, the first grille strips correspond to the rotating shafts in a one-to-one mode, any first grille strip is parallel to the corresponding rotating shaft, and the rotating shafts are inserted into the corresponding first grille strips and located on the inner sides of the first grille strips. The number of the second grating strips is consistent with that of the first grating strips, the second grating strips correspond to the rotating shafts one to one, any second grating strip is parallel to the corresponding rotating shaft, and the rotating shafts are inserted into the corresponding first grating strips and located on the inner sides of the second grating strips; wherein the inner side of each first grille strip is close to the side corresponding to the second grille strip, the inner side of each second grille strip is close to the side corresponding to the first grille strip, the two surfaces of each first grille strip are both provided with recesses, and the two surfaces of each second grille strip are both provided with recesses. Compared with the prior art, the utility model has the advantages of noise reduction, adjustable wind resistance and the like.

Description

Technical Field

[0001] The utility model relates to a ventilation grille, in particular to an adjustable noise-reducing ventilation grille. Background Art

[0002] Power equipment including active filters requires heat dissipation. The forms of heat dissipation include liquid cooling and air cooling, with air cooling being the current main form.

[0003] Air cooling requires a fan to draw in cold air from the outside or blow out hot air from the inside. Since the fan drives the flow of air, it will generate noise, which will cause noise pollution to the environment. Therefore, technical personnel in this field are committed to reducing such noise.

[0004] In this regard, for example, Chinese patent CN201633680U discloses a ventilation grille that blocks sound waves by providing a reverse bend at the end of each grille bar. However, this method affects the intake airflow on the one hand, and can only achieve one-way noise reduction on the other hand.

[0005] In addition, Chinese patent CN 103292441 A discloses a bionic noise reduction grille, which has a serrated structure on the leading and trailing edges of the grille. The serrated units of the serrated structure are evenly distributed along the edge of the grille, and the serrated units are symmetrically distributed on the leading and trailing edges of the grille. The serrated structure of the leading and trailing edges can suppress the shedding of vortices at the tail of the grille, reduce the pulsating pressure generated by the unsteady airflow on the grille surface, and ultimately reduce the aerodynamic noise generated by the grille under the airflow.

[0006] However, the bionic noise reduction grille can only reduce the noise of sound waves whose propagation direction is parallel to the base surface of the grille bars. Although bidirectional noise reduction can be achieved, the noise reduction effect is limited. Utility Model Content

[0007] The purpose of the utility model is to provide an adjustable noise reduction ventilation grille.

[0008] The purpose of the utility model can be achieved through the following technical solutions:

[0009] An adjustable noise reduction ventilation grille, comprising:

[0010] A plurality of first grille bars and a rotating shaft having the same number as the first grille bars, wherein each first grille bar corresponds to each rotating shaft, each first grille bar is arranged parallel to the corresponding rotating shaft, and the rotating shaft is inserted into the corresponding first grille bar and is arranged inside the first grille bar;

[0011] The number of second grille bars is the same as that of the first grille bars, each second grille bar corresponds to each rotating shaft, any second grille bar is arranged parallel to the corresponding rotating shaft, and the rotating shaft is inserted into the corresponding first grille bar and is located inside the second grille bar;

[0012] The inner side of the first grille bar is the side close to the corresponding second grille bar, the inner side of the second grille bar is the side close to the corresponding first grille bar, and depressions are provided on both surfaces of the first grille bar, and depressions are provided on both surfaces of the second grille bar, and the axes of all rotating shafts are in the same plane.

[0013] A plurality of cylindrical first rings are provided at the inner edge of the first grid bar, the inner diameters of all the first rings are consistent with the outer diameter of the rotating shaft, and the axes of all the first rings are in a straight line;

[0014] A plurality of cylindrical second rings are provided at the inner edge of the second grid bar, the inner diameters of all the second rings are consistent with the outer diameter of the rotating shaft, and the axes of all the second rings are in a straight line;

[0015] Corresponding to any corresponding first grid bar and second grid bar, the projection line segment of any first ring on the first grid bar on the axis of the rotating shaft does not overlap with the projection line segment of any second ring on the axis of the rotating shaft, and the rotating shaft is set through each first ring and each second ring.

[0016] The first grid bar is also provided with a first elastic sleeve, and the second grid bar is also provided with a second elastic sleeve. The first elastic sleeve and the second elastic sleeve are both provided with external threads. The rotating shaft is arranged through the first elastic sleeve and the second elastic sleeve, and the first elastic sleeve and the second elastic sleeve are locked by a locking nut to prevent the first grid bar and the second grid bar from rotating relative to the rotating shaft.

[0017] The first elastic sleeve and the second elastic sleeve are respectively located at two ends of the rotating shaft, and all the projection line segments of the first ring and the second ring on the axis of the rotating shaft are located between the projection line segments of the first elastic sleeve and the second elastic sleeve on the axis of the rotating shaft.

[0018] The first elastic sleeve and the second elastic sleeve have the same structure.

[0019] The first elastic sleeve is provided with a plurality of strip-shaped notches, and the strip-shaped notches are arranged along the axial direction.

[0020] The rotation angle of the first grid bars and the second grid bars is ±45 degrees.

[0021] The depression is semi-cylindrical.

[0022] The center of the groove on one side of the first grid bar is projected onto the base surface of the first grid bar to form a first projection line, and the center of the groove on the other side is projected onto the base surface of the first grid bar to form a second projection line, and the distance between any first projection line and an adjacent second projection line is half the distance between any projection line and any adjacent projection line;

[0023] The center of the groove on one side surface of the second grid bar is projected onto the base surface of the second grid bar to form a third projection line, which is alternately arranged with the center of the groove on the other side surface to form a fourth projection line projected onto the base surface of the second grid bar, and the distance between any third projection line and the adjacent fourth projection line is half the distance between any three projection lines and any three adjacent projection lines.

[0024] All the first grid bars are arranged in parallel.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. By setting up grille bars with recesses on the upper and lower surfaces, and the two interconnected grille bars can rotate about the same axis, it is possible to adjust the air guide angle while understanding the flow resistance and sound waves by changing the curvature and angle of the recess, thereby achieving dual adjustment of wind noise and wind resistance.

[0027] 2. The first grille bar and the second grille bar are symmetrically arranged, so that they can be used for both air outlet and air inlet, and have a wide range of applications.

[0028] 3. By combining in the form of a sleeve, a larger rotation angle can be achieved, and the rotation of the first grille bar and the second grille bar can not affect each other.

[0029] 4. Through the cooperation of the elastic sleeve and the locking nut, the angle of the grille bar can be easily fixed.

[0030] 5. The center of the groove on one side of the first grille bar is projected onto the base surface of the first grille bar to form a first projection line, and the center of the groove on the other side is projected onto the base surface of the first grille bar to form a second projection line, which are arranged alternately. The distance between any first projection line and an adjacent second projection line is half the distance between any projection line and any adjacent projection line. This can reduce the process cost on the one hand, and on the other hand, reduce the decrease in noise reduction effect caused by the superposition of sound waves on the other side after passing through the grille bars. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural diagram of the utility model;

[0032] Figure 2 is a schematic structural diagram of the first grid bar;

[0033] Figure 3 is a schematic diagram of the bottom surface perspective of the first grille bar;

[0034] Figure 4 is a schematic diagram of the first set of rings;

[0035] Figure 5 is a schematic diagram of a first elastic sleeve;

[0036] Figure 6 This is a schematic diagram of the second state of the utility model;

[0037] Figure 7 This is a schematic diagram of the third state of the present utility model;

[0038] Figure 8 This is a schematic diagram of the fourth state of the present utility model;

[0039] Figure 9 This is a schematic diagram of state five of the present utility model;

[0040] Wherein: 1, rotating shaft, 2, second grille bar, 3, second grille bar, 2-1, recess, 2-2, first ring, 2-3, first elastic sleeve. DETAILED DESCRIPTION

[0041] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0042] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition or explanation in subsequent drawings.

[0043] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. In addition, the terms "proximal", "distal", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Physical quantities in formulas, unless separately marked, should be understood as basic quantities of the International System of Units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation, or integration.

[0044] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0045] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0046] An adjustable noise-reducing ventilation grille, such as Figure 1 Shown, including:

[0047] A plurality of first grille bars 2 and a rotating shaft 1 having the same number as the first grille bars 2, wherein each first grille bar 2 corresponds to each rotating shaft 1, and any first grille bar 2 is arranged parallel to the corresponding rotating shaft 1, and the rotating shaft 1 is inserted into the corresponding first grille bar 2 and is arranged on the inner side of the first grille bar 2;

[0048] The number of second grille bars 3 is the same as that of the first grille bars 2, and each second grille bar 3 corresponds to each rotation shaft 1. Any second grille bar 3 is arranged parallel to the corresponding rotation shaft 1, and the rotation shaft 1 is inserted into the corresponding first grille bar 2 and is located inside the second grille bar 3;

[0049] The inner side of the first grid bar 2 is the side close to the corresponding second grid bar 3, and the inner side of the second grid bar 3 is the side close to the corresponding first grid bar 2. Figure 2 and Figure 3 As shown, recesses 2 - 1 are provided on both surfaces of the first grid bars 2 , and recesses 2 - 1 are provided on both surfaces of the second grid bars 3 , and the axes of all the rotating shafts 1 are in the same plane.

[0050] By providing grille bars with recesses 2-1 on both the upper and lower surfaces, and the two interconnected grille bars being rotatable about the same rotating shaft 1, it is possible to adjust the wind guide angle while adjusting the flow resistance and sound waves by changing the curvature and angle of the recess 2-1, thereby achieving dual adjustment of wind noise and wind resistance.

[0051] In addition, the first grid bars 2 and the second grid bars 3 are symmetrically arranged, so that they can be used for both air outlets and air inlets, and have a wide range of applications.

[0052] In most embodiments, a plurality of cylindrical first rings 2-2 are provided at the inner edge of the first grid bar 2, the inner diameters of all the first rings 2-2 are consistent with the outer diameter of the rotating shaft 1, and the axes of all the first rings 2-2 are in a straight line;

[0053] Similarly, a plurality of cylindrical second rings are provided at the inner edge of the second grid bar 3 , the inner diameters of all the second rings are consistent with the outer diameter of the rotating shaft 1 , and the axes of all the second rings are in a straight line;

[0054] Corresponding to any corresponding first grid bar 2 and second grid bar 3, the projection line segment of any first ring 2-2 on the first grid bar 2 on the axis of the rotating shaft 1 does not overlap with the projection line segment of any second ring on the axis of the rotating shaft 1, and the rotating shaft 1 is arranged through each first ring 2-2 and each second ring.

[0055] Thus, by combining in the form of a sleeve, a larger rotation angle can be achieved, and the rotation of the first grid bar 2 and the second grid bar 3 can not affect each other and can rotate freely, such as Figure 6-Figure 9 shown.

[0056] In addition, in some embodiments, a first elastic sleeve 2-3 is further provided on the first grid bar 2, and a second elastic sleeve is further provided on the second grid bar 3. The first elastic sleeve 2-3 and the second elastic sleeve are both provided with external threads. The rotating shaft 1 is arranged through the first elastic sleeve 2-3 and the second elastic sleeve, and the first elastic sleeve 2-3 and the second elastic sleeve are locked by a locking nut to prevent the first grid bar 2 and the second grid bar 3 from rotating relative to the rotating shaft 1.

[0057] The first elastic sleeve 2-3 and the second elastic sleeve are respectively located at both ends of the rotating shaft 1, and all the projection line segments of the first sleeve 2-2 and the second sleeve on the axis of the rotating shaft 1 are located between the projection line segments of the first elastic sleeve 2-3 and the second elastic sleeve on the axis of the rotating shaft 1.

[0058] By cooperating with the elastic sleeve and the locking nut, the angle of the grille bar can be easily fixed. This type of embodiment mainly adopts a manual adjustment mode. Of course, in other embodiments, automatic adjustment can also be adopted, for example, motor control can be used.

[0059] Generally, the first elastic sleeve 2 - 3 and the second elastic sleeve have the same structure.

[0060] like Figure 5As shown, the first elastic sleeve 2-3 is provided with a plurality of strip-shaped notches, which are arranged along the axial direction. The first elastic sleeve 2-3 includes a base portion and a portion for locking, wherein the inner diameter of the portion for locking gradually decreases from one end near the base portion to the suspended end. During the screwing process of the locking nut from the suspended end to the end near the base portion, the inner wall of the portion for locking is driven to press the rotating shaft 1 to achieve locking. In order to cooperate with the first elastic sleeve 2-3, as shown Figure 4 As shown, the first ring 2 - 2 also increases the distance from the main part of the first grille bar 2 through a connecting rod, thereby increasing the distance between the rotating shaft 1 and the main part of the first grille bar 2 , based on which space can be reserved for the locking nut.

[0061] In this embodiment, the rotation angle of the first grid bars 2 and the second grid bars 3 is ±45 degrees.

[0062] In addition, in this embodiment, the recess 2-1 is semi-cylindrical, and the center of the groove on one side of the first grid bar 2 is projected onto the base surface of the first grid bar 2 to form a first projection line, and the center of the groove on the other side is projected onto the base surface of the first grid bar 2 to form a second projection line, which is arranged alternately, and the distance between any first projection line and an adjacent second projection line is half the distance between any projection line and any adjacent projection line.

[0063] The center of the groove on one side surface of the second grid bar 3 is projected onto the base surface of the second grid bar 3 to form a third projection line, and the center of the groove on the other side surface is projected onto the base surface of the second grid bar 3 to form a fourth projection line, and the distance between any third projection line and the adjacent fourth projection line is half the distance between any three projection lines and any three adjacent projection lines.

[0064] This can reduce process costs on the one hand, and on the other hand, can reduce the reduction in noise reduction effect caused by the superposition of sound waves on the other side after the sound waves pass through the grille bars.

[0065] Generally, all first grille bars 2 are arranged in parallel to achieve quick selective balance adjustment of wind noise and wind resistance. The blade angle is adjustable in both directions without limiting the direction of use. It can be used for air outlet or air inlet. The unique blade design reduces wind resistance and provides a larger sound reflection surface during passage.

Claims

1. An adjustable noise reduction ventilation grille, characterized in that: include: A plurality of first grille bars and a rotating shaft having the same number as the first grille bars, wherein each first grille bar corresponds to each rotating shaft, each first grille bar is arranged parallel to the corresponding rotating shaft, and the rotating shaft is inserted into the corresponding first grille bar and is arranged inside the first grille bar; The number of second grille bars is the same as that of the first grille bars, each second grille bar corresponds to each rotating shaft, any second grille bar is arranged parallel to the corresponding rotating shaft, and the rotating shaft is inserted into the corresponding first grille bar and is located inside the second grille bar; The inner side of the first grille bar is the side close to the corresponding second grille bar, the inner side of the second grille bar is the side close to the corresponding first grille bar, and depressions are provided on both surfaces of the first grille bar, and depressions are provided on both surfaces of the second grille bar, and the axes of all rotating shafts are in the same plane.

2. The adjustable noise reduction ventilation grille according to claim 1, characterized in that: A plurality of cylindrical first rings are provided at the inner edge of the first grid bar, the inner diameters of all the first rings are consistent with the outer diameter of the rotating shaft, and the axes of all the first rings are in a straight line; A plurality of cylindrical second rings are provided at the inner edge of the second grid bar, the inner diameters of all the second rings are consistent with the outer diameter of the rotating shaft, and the axes of all the second rings are in a straight line; Corresponding to any corresponding first grid bar and second grid bar, the projection line segment of any first ring on the first grid bar on the axis of the rotating shaft does not overlap with the projection line segment of any second ring on the axis of the rotating shaft, and the rotating shaft is set through each first ring and each second ring.

3. The adjustable noise reduction ventilation grille according to claim 2, characterized in that: The first grid bar is also provided with a first elastic sleeve, and the second grid bar is also provided with a second elastic sleeve. The first elastic sleeve and the second elastic sleeve are both provided with external threads. The rotating shaft is arranged through the first elastic sleeve and the second elastic sleeve, and the first elastic sleeve and the second elastic sleeve are locked by a locking nut to prevent the first grid bar and the second grid bar from rotating relative to the rotating shaft.

4. The adjustable noise reduction ventilation grille according to claim 3, characterized in that: The first elastic sleeve and the second elastic sleeve are respectively located at two ends of the rotating shaft, and all the projection line segments of the first ring and the second ring on the axis of the rotating shaft are located between the projection line segments of the first elastic sleeve and the second elastic sleeve on the axis of the rotating shaft.

5. The adjustable noise reduction ventilation grille according to claim 3, characterized in that: The first elastic sleeve and the second elastic sleeve have the same structure.

6. The adjustable noise reduction ventilation grille according to claim 5, characterized in that: The first elastic sleeve is provided with a plurality of strip-shaped notches, and the strip-shaped notches are arranged along the axial direction.

7. The adjustable noise reduction ventilation grille according to claim 1, characterized in that: The rotation angle of the first grid bars and the second grid bars is ±45 degrees.

8. The adjustable noise reduction ventilation grille according to claim 1, characterized in that: The depression is semi-cylindrical.

9. The adjustable noise reduction ventilation grille according to claim 8, characterized in that: The center of the groove on one side of the first grid bar is projected onto the base surface of the first grid bar to form a first projection line, and the center of the groove on the other side is projected onto the base surface of the first grid bar to form a second projection line, and the distance between any first projection line and an adjacent second projection line is half the distance between any projection line and any adjacent projection line; The center of the groove on one side surface of the second grid bar is projected onto the base surface of the second grid bar to form a third projection line, which is alternately arranged with the center of the groove on the other side surface to form a fourth projection line projected onto the base surface of the second grid bar, and the distance between any third projection line and the adjacent fourth projection line is half the distance between any three projection lines and any three adjacent projection lines.

10. The adjustable noise reduction ventilation grille according to claim 1, characterized in that: All the first grid bars are arranged in parallel.

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