Noise reduction structure and fresh air ventilator with same

Abstract

The utility model relates to the technical field of fresh air ventilator equipment, and provides a noise reduction structure and a fresh air ventilator with the noise reduction structure, the noise reduction structure comprises an inner through outer cylinder, an inner through noise reduction cylinder is arranged in the outer cylinder, a plurality of oblique edges are arranged in the noise reduction cylinder along the air outlet flowing direction, and the oblique edges are arranged in the outer cylinder. And the distances between the end parts of the oblique edges and the axis of the noise reduction cylinder are gradually reduced in the air outlet flowing direction. According to the utility model, the defects in the prior art are overcome, the design is reasonable, the structure is compact, and air sequentially passes through the first inclined surfaces and the second inclined surfaces of the plurality of inclined edges when flowing, so that the air flowing direction is changed, and the generation of vortex and noise is reduced. A gap is formed between the noise reduction cylinder and the outer cylinder, direct impact of airflow on the noise reduction cylinder is reduced, air enters the space between the noise reduction cylinder and the outer cylinder and is blocked by the inclined baffle and then enters the noise reduction cylinder through the air return groove, and therefore an air curtain is formed to block the airflow entering the noise reduction cylinder, and the noise reduction effect of the noise reduction cylinder is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fresh air ventilator equipment, and in particular to a noise reduction structure and a fresh air ventilator with the noise reduction structure. Background Art

[0002] Fresh air ventilators play an important role in modern buildings. They can provide fresh air while expelling polluted air from the room to ensure indoor air quality. However, during the operation of the fresh air ventilator, the noise generated by the air flow often affects the user's living experience. To this end, we propose a noise reduction structure and a fresh air ventilator with the noise reduction structure. Utility Model Content

[0003] (1) Technical problems solved

[0004] In view of the deficiencies in the prior art, the present invention provides a noise reduction structure and a fresh air ventilator having the noise reduction structure to solve the above-mentioned problems in the prior art.

[0005] (2) Technical solution

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a noise reduction structure, comprising an outer cylinder with a continuous interior, a noise reduction cylinder with a continuous interior disposed within the outer cylinder, a plurality of oblique edges arranged in the noise reduction cylinder along the air flow direction, and a distance between the ends of the plurality of oblique edges and the axis of the noise reduction cylinder gradually decreasing along the air flow direction;

[0007] The bevel edge includes a first bevel and a second bevel, and the first bevel and the second bevel of adjacent bevel edges are arranged facing each other and forming an acute angle.

[0008] Furthermore, the angle between the first inclined surface and the air flow direction is an acute angle, and the angle between the second inclined surface and the air flow direction is an obtuse angle.

[0009] Furthermore, the oblique edges are arranged along the inner wall of the noise reduction cylinder and have a ring-shaped structure.

[0010] Furthermore, there is an air flow gap between the noise reduction tube and the outer tube, and an oblique block is provided between the two. A return air groove is opened in the circumference of the outer wall of the noise reduction tube, and the return air groove is arranged on the side of the oblique block close to the air inlet end.

[0011] Furthermore, the oblique baffle is tilted toward the air inlet end, and the angle between it and the air outlet flow direction is an obtuse angle. The inner wall of the return air trough is tilted, and its tilt direction is consistent with the tilt direction of the oblique baffle toward the air inlet end.

[0012] A fresh air ventilator includes a noise reduction structure and a shell. One side of the shell is provided with an air supply pipe for being installed in conjunction with the noise reduction structure, and the outer cylinder is installed in the air supply pipe.

[0013] Furthermore, the outer tube is provided with an outer edge on the side away from the air inlet end, the outer edge is circumferentially provided with a clamping plate on the side facing the air supply pipe, the clamping plate is provided with a buckle on the side facing the axis of the outer tube, and the outer wall of the air supply pipe is circumferentially provided with a clamping groove that cooperates with the buckle.

[0014] Furthermore, the buckle is tilted toward one side of the slot.

[0015] Furthermore, the card slot is arranged to be inclined toward one side of the buckle.

[0016] (3) Beneficial effects

[0017] The present invention provides a noise reduction structure and a fresh air ventilator having the noise reduction structure. The invention has the following beneficial effects:

[0018] 1. When the air flows, it passes through the first and second inclined surfaces of the plurality of bevel edges in sequence, so that the direction of the air flow is changed, thereby reducing the generation of vortex and noise.

[0019] 2. There is a gap between the noise reduction tube and the outer tube to reduce the direct impact of the airflow on the noise reduction tube. The air entering the noise reduction tube and the outer tube is blocked by the oblique block and enters the noise reduction tube through the return air slot, thus forming a "wind curtain" to block the airflow entering the noise reduction tube, further improving the noise reduction effect of the noise reduction tube.

[0020] 3. The cooperation between the buckle and the slot facilitates the installation and disassembly of the noise reduction structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the main perspective view of the noise reduction structure of the utility model;

[0023] Figure 3 This is a three-dimensional schematic diagram of the back of the noise reduction structure of the utility model;

[0024] Figure 4 This is a schematic sectional perspective diagram of the noise reduction structure of the utility model;

[0025] Figure 5 This is a schematic cross-sectional view of the noise reduction structure of the utility model;

[0026] Figure 6 It is a three-dimensional schematic diagram of the air supply pipe structure of the utility model.

[0027] In the figure: 11, outer tube; 111, outer edge; 112, clamping plate; 113, buckle; 12, noise reduction tube; 13, oblique edge; 14, oblique block; 15, return air duct; 131, first inclined surface; 132, second inclined surface; 2, shell; 3, air supply pipe; 4, clamping slot. DETAILED DESCRIPTION

[0028] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0029] Refer to the attached Figure 1-6 A noise reduction structure includes an outer cylinder 11 with a through-hole structure. The outer cylinder 11 is a cylindrical structure. A space for accommodating a noise reduction cylinder 12 is provided in the outer cylinder 11. The noise reduction cylinder 12 is a cylindrical structure with a through-hole structure. A plurality of oblique edges 13 are arranged in the noise reduction cylinder 12 along the air flow direction. The distance between the ends of the plurality of oblique edges 13 and the axis of the noise reduction cylinder 12 gradually decreases along the air flow direction. When the air flows, it passes through the plurality of oblique edges 13 in sequence, so that the air flow direction is changed, thereby reducing the generation of vortex and noise.

[0030] The bevel 13 includes a first bevel 131 and a second bevel 132. The first bevel 131 and the second bevel 132 of adjacent bevels 13 are opposite to each other and are arranged at an acute angle, further optimizing the noise reduction effect. After the air changes direction through the first bevel 131, it will change direction again through the second bevel 132, thereby further improving the noise reduction effect.

[0031] In this embodiment, the angle between the first inclined surface 131 and the air outlet flow direction is an acute angle, and the angle between the second inclined surface 132 and the air outlet flow direction is an obtuse angle. When the air flows, it will first pass through the first inclined surface 131 and then move outward, and then pass through the second inclined surface 132 and move outward, thereby better controlling the flow direction of the air and reducing vortices and noise.

[0032] In this embodiment, the oblique edge 13 is provided along the inner wall of the noise reduction tube 12 and has a ring-shaped structure, which increases the contact area between the oblique edge 13 and the air and better performs the noise reduction process.

[0033] In this embodiment, there is an air flow gap between the noise reduction tube 12 and the outer tube 11 to reduce the direct impact of the airflow on the noise reduction tube 12, and an oblique block 14 is provided between the two. A return air groove 15 is opened circumferentially on the outer wall of the noise reduction tube 12. The return air groove 15 is arranged on the side of the oblique block 14 close to the air inlet end. The air entering between the noise reduction tube 12 and the outer tube 11 is blocked by the oblique block 14 and will enter the noise reduction tube 12 through the return air groove 15, thereby forming a "wind curtain" to block the airflow entering the noise reduction tube 12, thereby further improving the noise reduction effect of the noise reduction tube 12.

[0034] In this embodiment, the oblique baffle 14 is tilted toward the air inlet end, and the angle between it and the air outlet flow direction is an obtuse angle, which is used to guide the airflow to flow back into the return air groove 15. The inner wall of the return air groove 15 is tilted, and its tilt direction is consistent with the tilt direction of the oblique baffle 14 toward the air inlet end, further optimizing the path of the airflow backflowing into the noise reduction tube 12.

[0035] A fresh air ventilator includes a noise reduction structure and a shell 2. The shell 2 is the outer shell of the fresh air ventilator. One side of the shell 2 is provided with an air supply pipe 3 for being installed in conjunction with the noise reduction structure, which is used to introduce fresh air from outdoor into the room. The shell 2 is also provided with an exhaust pipe for discharging turbid air in the room. The outer cylinder 11 is installed in the internal space of the air supply pipe 3.

[0036] In this embodiment, an outer edge 111 is provided on the side of the outer tube 11 away from the air inlet end, and a clamping plate 112 is circumferentially provided on the side of the outer edge 111 facing the air supply pipe 3, and a buckle 113 is provided on the side of the clamping plate 112 facing the axis of the outer tube 11. A card slot 4 that cooperates with the buckle 113 is circumferentially provided on the outer wall of the air supply pipe 3. When the outer tube 11 is inserted into the air supply pipe 3, the buckle 113 is stuck in the card slot 4, and the stable connection between the packaging noise reduction structure and the air supply pipe 3 can prevent the noise reduction structure from being separated from the shell 2 during a long time, and the buckle 113 can be pulled out of the card slot 4 by pulling the clamping plate 112 on the buckle 113, which is convenient for removing and cleaning the noise reduction structure later.

[0037] In this embodiment, the buckle 113 is tilted toward one side of the slot 4. At the same time, the slot 4 is tilted toward the buckle 113 so that the buckle 113 can slide into the slot 4 more smoothly, thereby simplifying the installation process.

[0038] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0039] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A noise reduction structure, comprising an outer cylinder (11) with a continuous interior, characterized in that: The outer cylinder (11) is provided with an internally penetrating noise reduction cylinder (12), and the noise reduction cylinder (12) has a plurality of oblique edges (13) arranged along the air flow direction, and the distance between the ends of the plurality of oblique edges (13) and the axis of the noise reduction cylinder (12) gradually decreases along the air flow direction; The oblique edges (13) comprise a first oblique surface (131) and a second oblique surface (132), and the first oblique surfaces (131) and the second oblique surfaces (132) of adjacent oblique edges (13) are opposite to each other and are arranged at an acute angle.

2. The noise reduction structure according to claim 1, wherein: The angle between the first inclined surface (131) and the air outlet flow direction is an acute angle, and the angle between the second inclined surface (132) and the air outlet flow direction is an obtuse angle.

3. The noise reduction structure according to claim 1, wherein: The oblique edge (13) is arranged along the inner wall of the noise reduction cylinder (12) and has a ring-shaped structure.

4. The noise reduction structure according to claim 1, wherein: An air flow gap is provided between the noise reduction cylinder (12) and the outer cylinder (11), and an oblique block (14) is provided between the two. A return air groove (15) is provided in the circumferential direction of the outer wall of the noise reduction cylinder (12), and the return air groove (15) is provided on a side of the oblique block (14) close to the air inlet end.

5. The noise reduction structure according to claim 4, wherein: The oblique baffle (14) is arranged to be inclined toward the air inlet end, and the angle between it and the air outlet flow direction is an obtuse angle. The inner wall of the return air slot (15) is arranged to be inclined, and its inclination direction is consistent with the inclination direction of the oblique baffle (14) toward the air inlet end.

6. A fresh air ventilator, characterized in that: The noise reduction structure comprises the noise reduction structure according to any one of claims 1 to 5, and further comprises a shell (2), wherein one side of the shell (2) is provided with an air supply pipe (3) for cooperating with the noise reduction structure, and the outer cylinder (11) is installed in the air supply pipe (3).

7. The fresh air ventilator according to claim 6, characterized in that: The outer tube (11) is provided with an outer edge (111) on a side away from the air inlet end, a clamping plate (112) is circumferentially provided on a side of the outer edge (111) facing the air supply pipe (3), a buckle (113) is provided on a side of the clamping plate (112) facing the axis of the outer tube (11), and a slot (4) that matches the buckle (113) is circumferentially provided on the outer wall of the air supply pipe (3).

8. The fresh air ventilator according to claim 7, characterized in that: The buckle (113) is arranged tilted toward one side of the card slot (4).

9. A fresh air ventilator according to claim 7 or 8, characterized in that: The card slot (4) is arranged obliquely toward one side of the buckle (113).

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