Corrugated pipe with noise reduction structure

Abstract

This utility model discloses a corrugated pipe with a noise reduction structure, relating to the field of corrugated pipe technology. It includes a corrugated pipe and a flow guide. The flow guide is disposed inside one end of the corrugated pipe. The outer wall of the flow guide gradually widens from one end to its opposite end, with the narrow end facing the end of the corrugated pipe without the flow guide. The flow guide is coaxially arranged with the corrugated pipe, and a gap is left between them for airflow. This utility model, by providing a flow guide inside the output end of the corrugated pipe, allows turbulent airflow within the corrugated pipe to impact the flow guide when it reaches the output end. This compresses the airflow, making its velocity uniform, and the airflow then exits through the gap between the flow guide and the inner wall of the corrugated pipe, reducing resonance noise. Furthermore, the gradual widening of the outer wall of the flow guide from one end to its opposite end provides flexible guidance, further improving the uniformity of airflow and thus reducing resonance noise.

Description

Technical Field

[0001] This utility model relates to the field of corrugated pipe technology, and in particular to a corrugated pipe with a noise reduction structure. Background Technology

[0002] A corrugated tube is a tubular elastic sensitive element made of foldable corrugated sheets connected along the folding and stretching direction. Dryers or shoe dryers with corrugated tubes are available on the market. The corrugated tube is used for drying shoes. Because the corrugated tube has a certain length, when the airflow flows through the inner wall of the corrugated tube, the airflow will collide with the corrugations of the corrugated tube, forming turbulent airflow. The friction produces a buzzing resonance sound. The existence of resonance noise affects the user experience.

[0003] Therefore, it is necessary to invent a bellows with a noise reduction structure to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a bellows with a noise reduction structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a corrugated pipe with a noise reduction structure, comprising a corrugated pipe and a flow guide, wherein the flow guide is disposed inside one end of the corrugated pipe, and the outer wall of the flow guide gradually widens from one end to the opposite end, with the narrow end facing the end of the corrugated pipe where the flow guide is not disposed. The flow guide is coaxially disposed with the corrugated pipe, and a gap is left between the two for airflow to pass through.

[0006] Furthermore, the flow guide is a flow guide plate and has an umbrella-shaped structure.

[0007] Furthermore, it also includes a connector, which is detachably installed at the output end of the bellows, and the guide is fixedly installed with the connector.

[0008] Furthermore, one end of the connector has several retaining plates on its inner wall for detachable engagement with the corrugated pipe.

[0009] Furthermore, the flow guide is located at the end of the connector where the clamping plate is located, and is arranged coaxially with the connector.

[0010] Furthermore, when the connector is connected to the bellows, the guide extends into the interior of the bellows.

[0011] Furthermore, it also includes support legs, with the lower wide end of the guide member being fixedly connected to the inner wall of the connector via multiple support legs.

[0012] Furthermore, the side wall of the connector is provided with an elastic plate and one end is connected to the connector. The outer side of the elastic plate is provided with a protrusion, and the end of the elastic plate not connected to the connector is provided with an outward protrusion.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] This invention features a guide element inside the output end of a corrugated pipe. When the turbulent airflow inside the corrugated pipe reaches the output end, it impacts the guide element, compressing the airflow and making the flow velocity uniform. The airflow then exits through the gap between the guide element and the inner wall of the corrugated pipe, reducing resonance noise. Furthermore, the outer wall of the guide element gradually widens from one end to the other, and the flexible guidance further enhances the uniformity of airflow, thereby reducing resonance noise. Attached Figure Description

[0015] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0016] Figure 2 This is a schematic diagram of the disassembled structure of this utility model.

[0017] Figure 3 This is a schematic diagram of the vertical angle structure of the connector of this utility model.

[0018] Figure 4 This is a schematic diagram of the vertical angle structure of the connector of this utility model.

[0019] Figure 5 This is a cross-sectional view of the connector of this utility model.

[0020] Figure 6 This is a top view of the connector structure of this utility model.

[0021] Figure 7 This is a schematic diagram of the application structure of this utility model.

[0022] In the diagram: 1. Corrugated pipe; 2. Flow guide; 3. Connector; 4. Support leg; 5. Clamping plate; 6. Elastic plate; 7. Raised strip; 8. Protrusion; 9. Clothes dryer; 10. Blanket drying head. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "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 are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 utility model.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection; a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] 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 one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] This utility model discloses a bellows with a noise reduction structure.

[0028] like Figure 1-2 As shown, a bellows with a noise reduction structure includes a bellows 1 and a flow guide 2. The flow guide 2 is disposed inside one end of the bellows 1. The outer wall of the flow guide 2 gradually widens from one end to the opposite end, and the narrow end faces the end of the bellows 1 where the flow guide 2 is not disposed. The flow guide 2 is coaxially disposed with the bellows 1, and a gap is left between the two for airflow to pass through.

[0029] As the airflow flows through the inner wall of the bellows 1, it collides with the folds of the bellows 1, creating turbulent airflow and resulting in resonance noise.

[0030] In practical use, the end of the bellows 1 with the guide 2 is the output end. When the turbulent airflow blows to the output end of the bellows 1, it hits the guide 2, the airflow is compressed, the flow rate is uniform, and then it is blown out from the gap between the guide 2 and the inner wall of the bellows 1, reducing the resonance sound.

[0031] In some embodiments, the flow guide 2 is a flow guide plate and has an umbrella-shaped structure.

[0032] In some embodiments, a connector 3 is also included, which is detachably installed at the output end of the bellows 1, and the guide 2 is fixedly installed with the connector 3.

[0033] like Figure 3-6 As shown, a number of clamping plates 5 are provided on the inner wall of one end of the connector 3 for detachable clamping between the connector 3 and the corrugated pipe 1. Specifically, the end of the corrugated pipe 1 is inserted into the interior of the connector 3 from the end of the connector 3 with the clamping plate 5, and the corrugated convex part of the corrugated pipe 1 passes through the clamping plate 5 and achieves clamping and limiting.

[0034] The flow guide 2 is located at the end of the connector 3 where the clamping plate 5 is located, and is arranged coaxially with the connector 3. The lower part of the wide end of the flow guide 2 is fixedly connected to the inner wall of the connector 3 through multiple support legs 4.

[0035] like Figure 1 As shown, when the connector 3 is connected to the bellows 1, the guide 2 extends into the interior of the bellows 1, and squeezes and reduces noise of the airflow before the turbulent airflow is blown out of the bellows 1.

[0036] like Figure 7 As shown, in some embodiments, the corrugated pipe 1 is used in the dryer 9, which is an existing hot air drying device used for drying clothes, drying shoes, etc. When drying shoes, the output end of the dryer 9 is connected to two corrugated pipes 1 for drying the inside of the shoes.

[0037] This utility model provides comparative experimental test data:

[0038] Bellows A: A conventional bellows without the flow guide 2.

[0039] Bellows B: The bellows of this utility model is provided with a flow guide 2.

[0040] Bellows A and B are identical in length, diameter, thickness, and material. The only difference is the presence or absence of the guide element 2. Noise levels for both bellows A and B were tested using the same dryer 9 at the same speed and setting. Tests were conducted 5 seconds after the dryer 9 started, and readings were taken from the same location at the bellows' output end. Multiple tests were performed, and the noise level is measured in dB. The experimental data are as follows:

[0041] Bellows A Bellows B Data 1 66 61 Data 2 67 61 Data 3 67 62

[0042] The above data clearly shows that the bellows B with the guide 2 of this utility model has a lower noise level, which achieves a good noise reduction effect.

[0043] like Figure 4As shown, the side wall of the connector 3 is provided with an elastic plate 6. The connector 3 is made of plastic. The elastic plate 6 is formed by cutting the side wall of the connector 3. One end of the elastic plate 6 is connected to the connector 3 but not cut. The outer side of the elastic plate 6 is provided with a protrusion 7. The end of the elastic plate 6 that is not connected to the connector 3 is provided with an outward protrusion 8. The elastic plate 6 and the protrusion 7 are provided for the connector 3 to be limited and locked with other accessories.

[0044] The accessories that are compatible with connector 3 include, but are not limited to, those with grooves that are compatible with the protrusion 7. Connector 3 is inserted into the accessory to be compatible, and the protrusion 7 and the groove are matched to achieve a snap-fit. When disassembling, press the protrusion 8 to cancel the matching of the protrusion 7 and the groove, and connector 3 can be pulled out.

[0045] In some embodiments, such as Figure 7 As shown, the dryer 9 also includes a quilt drying head 10 for drying quilts, and the quilt drying head 10 is detachably connected to the connector 3.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bellows with a noise reduction structure, comprising a bellows, characterized in that: It also includes a flow guide, which is located inside one end of the bellows. The outer wall of the flow guide gradually widens from one end to the opposite end, and the narrow end faces the end of the bellows where no flow guide is provided. The flow guide is coaxially arranged with the bellows, and a gap is left between them for airflow to pass through.

2. The bellows with a noise reduction structure according to claim 1, characterized in that: The flow guide is a flow guide plate and has an umbrella-shaped structure.

3. A bellows with a noise reduction structure according to claim 1, characterized in that: It also includes a connector, which is detachably installed at the output end of the bellows, and the flow guide is fixedly installed with the connector.

4. A bellows with a noise reduction structure according to claim 3, characterized in that: The inner wall of one end of the connector is provided with several clamping plates for detachable clamping with the corrugated pipe.

5. A bellows with a noise reduction structure according to claim 4, characterized in that: The flow guide is located at the end of the connector where the clamping plate is located, and is arranged coaxially with the connector.

6. A bellows with a noise reduction structure according to claim 5, characterized in that: After the connector is connected to the bellows, the guide extends into the interior of the bellows.

7. A bellows with a noise reduction structure according to claim 5, characterized in that: It also includes support legs, with the lower wide end of the guide member fixedly connected to the inner wall of the connector via multiple support legs.

8. A bellows with a noise reduction structure according to claim 3, characterized in that: The side wall of the connector is provided with an elastic plate and one end is connected to the connector. The outer side of the elastic plate is provided with a protrusion, and the end of the elastic plate that is not connected to the connector is provided with an outward protrusion.

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