Smoke exhaust pipe and range hood
By designing the connection section of the exhaust pipe to connect with the range hood, and utilizing the angle of the noise reduction section and the principle of sound refraction, combined with the vibration damping part to reduce the noise of the exhaust pipe, the problem of high noise in traditional range hood exhaust pipes is solved, achieving improved noise reduction effect and user experience.
Patent Information
- Application Number
- CN202520091125.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-15
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-01-15
AI Technical Summary
Traditional range hoods tend to generate significant airflow noise during the smoke extraction process, which negatively impacts the user experience.
Design a smoke exhaust pipe that connects to the range hood via a connecting section. Utilize the angle formed by the first and second rings of the noise reduction section to extend the noise transmission path. Control the noise propagation path and refraction direction through the principle of sound refraction, and reduce vibration noise by combining with a shock-absorbing part.
It effectively reduces exhaust pipe noise, improves user experience, reduces manufacturing difficulty and cost, while maintaining good noise reduction effect.
Smart Images
Figure CN223869278U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of range hood technology, specifically relating to a smoke exhaust pipe and a range hood. Background Technology
[0002] With the acceleration of urbanization and the improvement of people's living standards, the comfort of the kitchen, as an important area in family life, is receiving increasing attention. Range hoods are typically used to remove cooking fumes from the kitchen.
[0003] Traditional range hoods use a fan to draw in cooking fumes, which are then discharged outdoors through an exhaust duct. One end of the exhaust duct is connected to the range hood's air outlet, and the other end is connected to a common flue.
[0004] However, during the smoke extraction process, range hoods can easily generate significant airflow noise in the exhaust pipe, affecting the user experience. Utility Model Content
[0005] This application provides a smoke exhaust pipe and a range hood to solve the problem of excessive noise from the smoke exhaust pipe during the smoke exhaust process of the range hood.
[0006] In a first aspect, this application provides a smoke exhaust pipe, including: a connecting section for connecting to a range hood;
[0007] A noise reduction section is connected to the connecting section. The noise reduction section includes several noise reduction rings, each ring including a first ring segment and a second ring segment. The first ring segment and the second ring segment have an included angle. The second ring segment is connected to the first ring segment of the adjacent noise reduction ring. The first ring segment at the end of the noise reduction section is connected to the connecting section. The included angle between the first ring segment and the second ring segment gradually increases towards the end away from the range hood.
[0008] A transition section is provided for connection to a common flue, and the second ring segment at the end of the noise reduction section is connected to the transition section.
[0009] In one possible design, at least two of the noise reduction rings form a group, with the first and second ring segments in the same group forming the same angle, and the angles between the first and second ring segments in adjacent groups increasing by 5° in the direction away from the range hood.
[0010] In one possible design, the angle between the first ring segment and the second ring segment is α, where 20° ≤ α ≤ 30°.
[0011] In one possible design, the cross-sectional length of the first ring segment is greater than the cross-sectional length of the second ring segment.
[0012] In one possible design, the first ring segment includes a first inner layer and a first outer layer, the second ring segment includes a second inner layer and a second outer layer, the first outer layer is connected to the adjacent second outer layer, the first inner layer is connected to the adjacent second inner layer, and the included angle α is formed between the first inner layer and the second inner layer.
[0013] In one possible design, a noise reduction layer (400) is provided in both the first ring segment (211) and the second ring segment (212).
[0014] In one possible design, the connecting section includes a connecting part and a shock-absorbing part, the connecting part being used to connect to the range hood, one side of the shock-absorbing part being connected to the connecting part, and the other side being connected to the noise reduction section.
[0015] In one possible design, the shock-absorbing part is a rubber ring.
[0016] In one possible design, the connecting part includes a connector and a snap fastener, the connector being used to mate with the air outlet of the range hood, the snap fastener being used to engage with the air outlet of the range hood, and the connector being connected to the shock-absorbing part.
[0017] Secondly, this application provides a range hood, including a range hood body and an exhaust pipe disposed on the range hood body.
[0018] The exhaust pipe and range hood provided in this application are connected to the range hood via a connecting section to exhaust the fumes extracted by the range hood. The noise generated by the exhaust pipe during the exhaust process comes into contact with the first and second ring segments, which form an angle with the noise reduction section, thus extending the noise transmission path. By utilizing the principle of sound refraction, the propagation path and refraction direction of the sound are controlled, thereby achieving the effect of noise reduction. Furthermore, the angle on the side closer to the range hood is smaller, increasing the number of refractions of the noise between the first and second ring segments, thereby improving the noise reduction effect. Attached Figure Description
[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.
[0020] Figure 1 This is a schematic diagram of the structure of the exhaust pipe provided in an embodiment of this application;
[0021] Figure 2 for Figure 1 A cross-sectional view of the noise reduction section.
[0022] Explanation of reference numerals in the attached figures:
[0023] 100. Connecting section;
[0024] 110. Connecting part;
[0025] 111. Connector;
[0026] 112. Buckle;
[0027] 120. Vibration damping unit;
[0028] 200, Noise Reduction Section;
[0029] 210. Noise Reduction Ring;
[0030] 211. First segment;
[0031] 2111, First Inner Layer;
[0032] 2112, First outer layer;
[0033] 212. Second ring segment;
[0034] 2121, Second Inner Layer;
[0035] 2122, Second outer layer;
[0036] 300, Adapter Section;
[0037] 400. Noise Reduction Layer.
[0038] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation
[0039] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0040] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein.
[0041] In this application, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.
[0042] With the acceleration of urbanization and the improvement of people's living standards, the comfort of the kitchen, as an important area in family life, is receiving increasing attention. Range hoods are typically used to remove cooking fumes from the kitchen.
[0043] Traditional range hoods use a fan to draw in cooking fumes, which are then discharged outdoors through an exhaust duct. One end of the exhaust duct connects to the range hood's outlet, and the other end connects to a common ventilation duct. The range hood's fan draws in cooking fumes from the kitchen and expels them into the exhaust duct. The rapid airflow within the exhaust duct generates considerable noise.
[0044] However, during the smoke extraction process, range hoods can easily generate significant airflow noise in the exhaust pipe, affecting the user experience.
[0045] To address the aforementioned issues, this application provides a smoke exhaust pipe and a range hood. The smoke exhaust pipe is connected to the range hood via a connecting section to expel the fumes extracted by the range hood. During the smoke exhaust process, the noise generated by the smoke exhaust pipe comes into contact with the first and second rings of the noise reduction section, extending the noise transmission path. By utilizing the principle of sound refraction, the propagation path and refraction direction of the sound are controlled, thereby achieving the effect of noise reduction. Furthermore, the angle between the pipes on the side closer to the range hood is smaller, increasing the number of refractions of noise between the first and second rings, thus improving the noise reduction effect.
[0046] The technical solutions of this application and how they solve the aforementioned technical problems are described in detail below with specific embodiments. These specific embodiments may exist independently or in combination with each other. Identical or similar concepts or processes may not be repeated in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.
[0047] Figure 1 This is a schematic diagram of the structure of the exhaust pipe provided in an embodiment of this application; Figure 2 for Figure 1 A cross-sectional view of the noise reduction section. (Refer to...) Figure 1 and Figure 2 This application provides a smoke exhaust pipe, which includes a connecting section 100 for connecting to a range hood;
[0048] The noise reduction section 200 is connected to the connecting section 100. The noise reduction section 200 includes several noise reduction rings 210. Each noise reduction ring 210 includes a first ring segment 211 and a second ring segment 212. The first ring segment 211 and the second ring segment 212 have an included angle. The second ring segment 212 is connected to the first ring segment 211 of the adjacent noise reduction ring 210. The first ring segment 211 at the end of the noise reduction section 200 is connected to the connecting section 100. The included angle between the first ring segment 211 and the second ring segment 212 gradually increases towards the end away from the range hood.
[0049] The transition section 300 is used to connect with the common flue, and the second ring section 212 at the end of the noise reduction section 200 is connected to the transition section 300.
[0050] Several noise reduction rings 210 on the noise reduction section 200 are connected in sequence to form a pipe body. The first ring segment 211 and the second ring segment 212 on the noise reduction ring 210 form an angle. The angle reduces the noise of the airflow in the flue. By using the principle of sound refraction, the propagation path and refraction direction of the sound are controlled, thereby achieving the effect of noise reduction. In addition, the angle of the side closer to the range hood is smaller, which increases the number of refractions of the noise between the first ring segment 211 and the second ring segment 212, thereby improving the noise reduction effect.
[0051] The noise reduction ring 210 near the range hood has a smaller angle between the first ring segment 211 and the second ring segment 212, making the noise reduction ring 210 closer to the range hood more densely packed. The smaller angle means noise is refracted more times within the noise reduction ring 210, thus strengthening noise reduction near the noise source for a higher noise reduction effect. Due to the attenuation of airflow within the exhaust pipe, the noise at the end of the exhaust pipe furthest from the range hood is lower, thus requiring less noise reduction. In this case, increasing the angle between the first ring segment 211 and the second ring segment 212 reduces the manufacturing cost and difficulty of the exhaust pipe without affecting the noise reduction effect.
[0052] In one possible design, at least two noise reduction rings 210 are set as a group, with the first ring segment 211 and the second ring segment 212 in the same group forming the same angle, and the angle formed between the first ring segment 211 and the second ring segment 212 in adjacent groups increasing by 5° in the direction away from the range hood.
[0053] By grouping multiple noise reduction rings 210 together and setting them equally within the same group, the number of noise reduction rings 210 can be reduced, thus reducing the workload of design and manufacturing. Furthermore, by grouping multiple noise reduction rings 210 together and setting them equally in the same area, different angles of the noise reduction rings 210 can be set according to different positions of the exhaust pipe, thereby improving the noise reduction effect of the noise reduction rings 210.
[0054] Furthermore, the same group of noise reduction rings 210 is set to five, that is, starting from the side closest to the range hood, five rings are spaced apart as a group, and the included angle of each group of noise reduction rings 210 is the same, and the included angle of adjacent groups of noise reduction rings 210 gradually increases in the direction away from the range hood. In other embodiments, the number of the same group of noise reduction rings 210 can be set according to actual needs, which will not be elaborated on here.
[0055] In other embodiments, the difference between the included angles of two adjacent noise reduction rings 210 can be set according to actual needs. For example, the difference between the included angles of two adjacent noise reduction rings 210 can be set to 1°, 2°, 3°, 4°, 6°, etc. Further details will not be elaborated here.
[0056] In one possible design, the angle between the first ring segment 211 and the second ring segment 212 is α, where 20°≤a≤30°.
[0057] Specifically, the included angle of the noise reduction ring 210 on the side of the noise reduction section 200 closest to the range hood is set to 20°, and the included angle of the subsequent noise reduction rings 210 is increased sequentially until it reaches 30°.
[0058] By adopting the above technical solution, the included angle of the noise reduction ring 210 in the initial stage is set to 20° to improve the noise reduction effect during periods of strong wind. Of course, if the included angle is set too small, the noise reduction ring 210 will be too concentrated, which is equivalent to only increasing the thickness of the noise reduction section 200. This is not conducive to controlling the sound propagation path and refraction direction by utilizing the principle of sound refraction, resulting in a poor noise reduction effect.
[0059] For example, in order to ensure a good noise reduction effect, multiple noise reduction rings 210 with an included angle of 20° can be set in the noise reduction section 200 near the beginning of the range hood. After ensuring a good noise reduction effect, the angle of the noise reduction rings 210 can be gradually increased until it reaches 30° to ensure a good noise reduction effect in the initial stage.
[0060] For example, the adapter section 300 is used to connect to a common flue or extend directly to the outside. The adapter section 300 can be a flexible hose to facilitate connection to the common flue as needed. When the common flue is located at the top of the range hood, the adapter section 300 is a straight section; when the common flue is located on the side of the range hood, the adapter section 300 is a bend to facilitate connection to the common flue.
[0061] In one possible design, the cross-sectional length of the first ring segment 211 is greater than the cross-sectional length of the second ring segment 212.
[0062] Among them, reference Figure 1The noise reduction section 200 is cut along its axis to form a cross-section. The cross-sectional length of the first ring segment 211 is greater than that of the second ring segment 212. The first ring segment 211 is the segment closer to the range hood, and the angle between the first ring segment 211 and the second ring segment 212 is an acute angle. The longer length of the first ring segment 211 allows the noise reduction ring 210 to tilt towards the side away from the range hood. This enhances the noise barrier effect of the second ring segment 212, forming a sound barrier to improve the noise reduction performance.
[0063] Furthermore, the first ring segment 211 includes a first inner layer 2111 and a first outer layer 2112, and the second ring segment 212 includes a second inner layer 2121 and a second outer layer 2122. The first outer layer 2112 is connected to the adjacent second outer layer 2122, and the first inner layer 2111 is connected to the adjacent second inner layer 2121. An angle α is formed between the first inner layer 2111 and the second inner layer 2121. An angle α is also formed between the first outer layer 2112 and the second outer layer 2122.
[0064] Specifically, the first inner layer 2111 and the second inner layer 2121 are made of PVC plastic. The first outer layer 2112 and the second outer layer 2122 are made of PVC plastic or aluminum foil.
[0065] In one possible design, a noise reduction layer 400 is provided in both the first ring segment 211 and the second ring segment 212.
[0066] The noise reduction layer 400 is also bent like the noise reduction section 200. The noise reduction layer 400 is embedded in the noise reduction section 200 to absorb noise, thereby further improving the noise reduction effect.
[0067] For example, the noise reduction layer 400 is a composite noise reduction cotton, the noise reduction section 200 is made of plastic, and the composite noise reduction cotton is bonded inside the noise reduction section 200.
[0068] In one possible design, refer to Figure 1 The connecting section 100 includes a connecting part 110 and a shock-absorbing part 120. The connecting part 110 is used to connect with the range hood. One side of the shock-absorbing part 120 is connected to the connecting part 110, and the other side is connected to the first ring section 211.
[0069] The connecting part 110 is used to connect with the range hood. The shock-absorbing part 120 is located between the connecting part 110 and the noise reduction section 200, and is connected to the connecting part 110 and the noise reduction section 200 respectively. In this way, the vibration amplitude of the exhaust pipe during the use of the range hood is reduced by the shock-absorbing part 120, the vibration noise of the exhaust pipe is reduced, and the noise reduction effect is further improved.
[0070] Furthermore, both ends of the noise reduction section 200 have shock-absorbing parts 120 (not shown in the figure) at the connection points with the connecting section 100 and the transition section 300, thereby achieving a shock-absorbing effect and further reducing the noise generated by vibration.
[0071] In one possible design, the shock absorber 120 is a rubber ring.
[0072] The rubber ring is bonded to the outer wall of the noise reduction section 200, and the connecting part 110 is sleeved on the rubber ring and bonded and fixed to the rubber ring, thereby realizing the connection between the connecting part 110 and the noise reduction section 200. In addition, the rubber ring reduces the vibration transmitted from the range hood to the exhaust pipe, thereby reducing vibration noise and improving the noise reduction effect of the exhaust pipe.
[0073] In one possible design, the connecting part 110 includes a connector 111 and a snap fastener 112. The connector 111 is used to connect with the air outlet of the range hood, and the snap fastener 112 is used to engage with the air outlet of the range hood. The connector 111 is connected to the shock-absorbing part 120.
[0074] Specifically, multiple clips 112 are provided, evenly distributed at one end of the connector 111. A slot is provided on the air outlet of the range hood, and the clips 112 engage within the slot to connect the connector 110 to the range hood. The clips 112 can take various forms, such as push clips, slide clips, flip clips, twist clips, or rotate clips, which will not be elaborated upon here.
[0075] This application provides a range hood, including a range hood body and an exhaust pipe disposed on the range hood body.
[0076] The exhaust pipe in this embodiment has the same structure as the exhaust pipe provided in any of the above embodiments and can bring the same or similar technical effects. It will not be described in detail here. For details, please refer to the description of the above embodiments.
[0077] This application provides a range hood, which is connected to the range hood via a connecting section 100 to exhaust the fumes extracted by the range hood. The noise generated by the exhaust pipe during the exhaust process comes into contact with the first ring section 211 and the second ring section 212 of the noise reduction section 200, which prolongs the noise path. By utilizing the principle of sound refraction, the propagation path and refraction direction of the sound are controlled, thereby achieving the effect of reducing noise and improving the user experience.
[0078] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A smoke exhaust pipe, characterized in that, include: A connecting section (100) is used to connect to the exhaust port of a range hood; The noise reduction section (200) includes a plurality of noise reduction rings (210), each noise reduction ring (210) including a first ring segment (211) and a second ring segment (212). The first ring segment (211) and the second ring segment (212) have an included angle. The second ring segment (212) is connected to the first ring segment (211) of the adjacent noise reduction ring (210). The first ring segment (211) at the end of the noise reduction section (200) is connected to the connecting section (100). The included angle between the first ring segment (211) and the second ring segment (212) gradually increases toward the end away from the range hood. A transition section (300) is provided for connection to a common flue, wherein the second ring section (212) at the end of the noise reduction section (200) is connected to the transition section (300).
2. The exhaust pipe according to claim 1, characterized in that, At least two of the noise reduction rings (210) form a group, and the included angle between the first ring segment (211) and the second ring segment (212) in the same group is the same. The included angle between the first ring segment (211) and the second ring segment (212) in adjacent groups increases by 5° in the direction away from the range hood.
3. The exhaust pipe according to claim 1, characterized in that, The angle between the first ring segment (211) and the second ring segment (212) is α, where 20°≤a≤30°.
4. The exhaust pipe according to claim 2, characterized in that, The cross-sectional length of the first ring segment (211) is greater than the cross-sectional length of the second ring segment (212).
5. The exhaust pipe according to claim 3, characterized in that, The first ring segment (211) includes a first inner layer (2111) and a first outer layer (2112), and the second ring segment (212) includes a second inner layer (2121) and a second outer layer (2122). The first outer layer (2112) is connected to the adjacent second outer layer (2122), and the first inner layer (2111) is connected to the adjacent second inner layer (2121). The included angle α is formed between the first inner layer (2111) and the second inner layer (2121).
6. The exhaust pipe according to claim 1, characterized in that, Noise reduction layers (400) are provided in both the first ring segment (211) and the second ring segment (212).
7. The exhaust pipe according to any one of claims 1-6, characterized in that, The connecting section (100) includes a connecting part (110) and a shock-absorbing part (120). The connecting part (110) is used to connect with the range hood. One side of the shock-absorbing part (120) is connected to the connecting part (110), and the other side is connected to the first ring section (211).
8. The exhaust pipe according to claim 7, characterized in that, The shock-absorbing part (120) is a rubber ring.
9. The exhaust pipe according to claim 7, characterized in that, The connecting part (110) includes a connector (111) and a buckle (112). The connector (111) is used to connect with the air outlet of the range hood, and the buckle (112) is used to snap into the air outlet of the range hood. The connector (111) is connected to the shock-absorbing part (120).
10. A range hood, characterized in that, It includes a range hood body and an exhaust pipe as described in any one of claims 1-9, which is disposed on the range hood body.