Sound absorption pipe and range hood

Abstract

The utility model relates to the technical field of range hoods, and provides a sound absorption pipe and a range hood. A sound absorption cavity is formed in the sound absorption pipe, a sound absorption hole is formed in the end of the sound absorption pipe and communicated with the sound absorption cavity, and a guide slope is arranged on the inner wall of the sound absorption hole and suitable for guiding out liquid entering the sound absorption cavity along with airflow. According to the sound-absorbing pipe provided by the utility model, the guide inclined surfaces are arranged in the sound-absorbing holes, so that the guide inclined surfaces can lead out liquid entering the sound-absorbing cavity along with air flow, and the sound-absorbing effect of the sound-absorbing pipe is prevented from being influenced by oil accumulation and oil dirt generation in the sound-absorbing cavity.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, in particular to a sound-absorbing pipe and a range hood. Background Art

[0002] In the related art, when the range hood is in use, various parts will vibrate and generate noise, so a sound-absorbing tube needs to be arranged inside the range hood to absorb the noise. However, during the long-term use of the range hood, grease will accumulate in the sound-absorbing tube, thereby affecting the sound absorption effect of the sound-absorbing tube. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the related art. To this end, the utility model provides a sound-absorbing tube to prevent oil from accumulating inside the sound-absorbing tube and affecting the sound-absorbing effect of the sound-absorbing tube.

[0004] The utility model also provides a range hood.

[0005] The utility model provides a sound-absorbing tube, wherein a sound-absorbing cavity is formed inside the sound-absorbing tube, a sound-absorbing hole is provided at the end of the sound-absorbing tube, the sound-absorbing hole is communicated with the sound-absorbing cavity, an inner wall of the sound-absorbing hole is provided with a guide slope, and the guide slope is suitable for guiding liquid entering the sound-absorbing cavity along with the airflow.

[0006] According to the sound-absorbing tube provided by the utility model, a guiding slope is arranged inside the sound-absorbing hole, so that the guiding slope can guide the liquid entering the sound-absorbing cavity along with the airflow, thereby preventing oil accumulation in the sound-absorbing cavity and generating grease, which affects the sound-absorbing effect of the sound-absorbing tube.

[0007] According to an embodiment of the present utility model, one end of the sound absorbing tube has an airflow guide surface connected to the guide inclined surface, and the airflow guide surface forms a first angle with the guide inclined surface.

[0008] According to an embodiment of the present invention, the first angle is α, and the value range of α is 90 degrees-140 degrees.

[0009] According to an embodiment of the present utility model, the guiding inclined surface forms a second angle β with the bottom wall of the sound absorbing cavity, and the second angle β is greater than 90 degrees.

[0010] According to an embodiment of the present invention, the sound absorbing tube is a 1 / 4 wavelength tube.

[0011] According to an embodiment of the utility model, the sound absorbing tube is in a long strip shape.

[0012] The utility model also provides a range hood, comprising:

[0013] case;

[0014] A volute, the volute being arranged inside the housing;

[0015] The above-mentioned sound absorbing tube is arranged on the shell, and the sound absorbing hole of the sound absorbing tube is arranged downward.

[0016] The range hood provided by the utility model comprises the above-mentioned sound absorbing tube, and thus also has the beneficial effects of the above-mentioned sound absorbing tube.

[0017] According to an embodiment of the present invention, there are multiple sound absorbing pipes, and the multiple sound absorbing pipes are arranged around the volute.

[0018] According to an embodiment of the present invention, a plurality of the sound absorbing tubes are arranged side by side.

[0019] According to an embodiment of the present invention, the sound absorbing cavities of at least two of the sound absorbing tubes have different lengths, and / or the sound absorbing holes of at least two of the sound absorbing tubes have different sizes.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the structure of the sound-absorbing tube provided by the utility model;

[0023] Figure 2 This is another structural schematic diagram of the sound-absorbing tube provided by the utility model;

[0024] Figure 3 yes Figure 2 A cross-sectional view along the AA direction;

[0025] Figure 4 yes Figure 3 A local enlarged view of point A;

[0026] Figure 5 It is a structural schematic diagram of the range hood provided by the utility model.

[0027] Reference numerals:

[0028] 10. Range hood;

[0029] 100, sound absorbing tube; 101, sound absorbing cavity; 102, sound absorbing hole; 103, guide slope; 104, air flow guide surface;

[0030] 200, housing;

[0031] 300. Snail shell. DETAILED DESCRIPTION

[0032] The following is a further detailed description of the implementation of the present utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0033] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0034] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0035] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0037] In the related art, when the range hood is in use, various parts will vibrate and generate noise, so a sound-absorbing tube needs to be arranged inside the range hood to absorb the noise. However, during the long-term use of the range hood, grease will accumulate in the sound-absorbing tube, thereby affecting the sound absorption effect of the sound-absorbing tube.

[0038] like Figures 1 to 5 As shown, the utility model proposes a sound-absorbing tube 100, wherein a sound-absorbing cavity 101 is formed inside the sound-absorbing tube 100, and a sound-absorbing hole 102 is provided at the end of the sound-absorbing tube 100, the sound-absorbing hole 102 is connected to the sound-absorbing cavity 101, and the inner wall of the sound-absorbing hole 102 has a guide slope 103. The guide slope 103 is used to guide the liquid entering the sound-absorbing cavity 101 along with the airflow, so as to prevent the accumulation of oil in the sound-absorbing cavity 101, the generation of grease, and the influence of the sound absorption effect of the sound-absorbing tube. It should be noted that when the sound-absorbing tube 100 is installed inside the range hood 10, the end of the sound-absorbing tube 100 having the sound-absorbing hole 102 is arranged downward, so that the grease entering the sound-absorbing cavity 101 can be guided out from the guide slope 103 under the action of gravity.

[0039] According to the sound absorbing tube 100 of the embodiment of the utility model, a guiding slope 103 is provided inside the sound absorbing hole 102. Thus, the guiding slope 103 can guide the liquid entering the sound absorbing cavity 101 along with the airflow, thereby preventing oil accumulation in the sound absorbing cavity 101 and generating oil stains, which would affect the sound absorption effect of the sound absorbing tube.

[0040] like Figure 1 and Figure 2As shown, in one embodiment of the present invention, one end of the sound absorbing tube 100 has an airflow guide surface 104 connected to the guide slope 103, and the airflow guide surface 104 forms a first angle with the guide slope 103. The airflow guide surface 104 can guide the airflow near the sound absorbing tube 100, prevent the airflow from directly impacting the sound absorbing tube 100, reduce the noise caused by the vortex generated by the airflow, and thus reduce the operating noise of the range hood 10. In addition, the airflow guide surface 104 can also reduce the air volume loss near the sound absorbing tube 100, so that the suction force of the range hood 10 is more concentrated, thereby improving the oil suction efficiency.

[0041] like Figure 3 and Figure 4 As shown, in order to enhance the guiding effect of the airflow guiding surface 104 on the airflow, in one embodiment of the utility model, the first angle is α, and the angle of α is 90°-140°. For example, the angle of the first angle can be 135°. The angle of the first angle mainly affects the guiding effect of the airflow guiding surface 104 on the airflow. If the angle is properly set, it can effectively prevent the airflow from directly impacting the sound-absorbing tube 100, reduce the noise caused by the vortex generated by the airflow, and thus reduce the operating noise of the range hood 10. At the same time, it can also reduce the air volume loss near the sound-absorbing tube 100, so that the suction force of the range hood 10 is more concentrated, thereby improving the oil suction efficiency.

[0042] like Figure 4 As shown, in one embodiment of the present invention, the guiding slope 103 forms a second angle β with the bottom wall of the sound absorption chamber 101, and the second angle β is greater than 90 degrees. For example, the angle of the second angle can be 100°. The angle of the second angle mainly affects the guiding effect of the guiding slope 103 on the liquid. If the angle is properly set, the liquid entering the sound absorption chamber 101 along with the airflow can be effectively guided out, and oil accumulation in the sound absorption chamber 101 is prevented, resulting in grease and affecting the sound absorption effect of the sound absorption tube. Therefore, the second angle is greater than 90 degrees, which is conducive to the liquid flowing out along the guiding slope 103 under the action of gravity.

[0043] like Figure 1 As shown, in one embodiment of the utility model, the sound absorbing tube 100 is a 1 / 4 wavelength tube. The working principle of the 1 / 4 wavelength tube is to use the reflection and interference of sound waves in the tube to produce a sound-absorbing effect. When the length of the sound absorbing tube 100 is equal to one-fourth of the wavelength of the sound wave, the sound wave reflection in the tube and the original sound wave will form an interference with a phase difference of 180 degrees, thereby achieving a sound-absorbing effect. Therefore, the sound absorbing tube 100 is designed as a 1 / 4 wavelength tube, which can effectively absorb noise of a specific frequency, thereby reducing the operating noise of the range hood 10. At the same time, the 1 / 4 wavelength tube has a simple structure, is easy to manufacture and install, and reduces the production cost.

[0044] Of course, the configuration of the sound absorbing tube 100 is not limited to this. In other embodiments of the present invention, the sound absorbing tube 100 can also be a T-shaped sound absorbing tube. Designing the sound absorbing tube 100 as a T-shaped sound absorbing tube can more effectively absorb the multi-band noise generated during the operation of the range hood 10, thereby further reducing the operating noise of the range hood 10.

[0045] like Figure 1 As shown, in some embodiments of the present invention, the sound absorbing tube 100 is in an elongated shape. The elongated sound absorbing tube 100 design can provide a larger sound absorbing area, thereby improving the sound absorbing effect. At the same time, the elongated design also allows the sound absorbing tube 100 to better adapt to the spatial layout inside the range hood 10, further improving the sound absorbing effect of the sound absorbing tube.

[0046] like Figure 5 As shown, the utility model also provides a range hood 10, comprising a housing 200, a volute 300 and the above-mentioned sound absorbing pipe 100. The sound absorbing pipe 100 is arranged on the housing 200, and the sound absorbing hole 102 of the sound absorbing pipe 100 is arranged downward. It should be noted that when the sound absorbing hole 102 of the sound absorbing pipe 100 is assembled in the range hood, it is not necessarily required to be strictly vertical downward, and there can also be a certain angle, as long as it is ensured that the oil can naturally flow out of the pipe under the action of gravity.

[0047] The range hood 10 according to the embodiment of the present invention includes the above-mentioned sound absorbing tube 100 and thus also has the beneficial effects of the above-mentioned sound absorbing tube 100 , which will not be described in detail herein.

[0048] like Figure 5 As shown, in some embodiments of the present invention, there are multiple sound absorbing pipes 100, and the multiple sound absorbing pipes 100 are arranged around the volute 300. In this way, the multiple sound absorbing pipes 100 can more effectively absorb the noise generated during the operation of the range hood 10. At the same time, the design of multiple sound absorbing pipes 100 arranged around the volute 300 is also conducive to improving the overall structural stability of the range hood 10 and preventing additional noise from being generated due to the vibration of the sound absorbing pipes 100.

[0049] like Figure 5 As shown, in some embodiments of the present invention, a plurality of sound absorbing tubes 100 are arranged side by side, so as to adapt to the spatial layout inside the range hood 10 . A plurality of sound absorbing tubes 100 can be arranged inside the range hood 10 to a maximum extent, thereby improving the sound absorption effect of the sound absorbing tubes 100 .

[0050] In some embodiments of the utility model, the sound absorbing chambers 101 of at least two sound absorbing tubes 100 have different lengths, so that the sound absorbing tubes 100 can have a better absorption effect on noises of different frequencies. The sound absorption effect of the sound absorbing tube 100 is related to its length. Sound absorbing tubes 100 with different lengths can absorb noises of different frequencies. For example, a long sound absorbing tube 100 can absorb low-frequency noise, while a short sound absorbing tube 100 can absorb high-frequency noise. In this way, by adjusting the length of the sound absorbing tube 100, the sound absorbing tube 100 can effectively absorb noises of various frequencies generated during the operation of the range hood 10. In addition, the lengths of different sound absorbing tubes 100 can also be adjusted according to actual needs to meet different sound absorption requirements. For example, if the noise in a certain frequency band is large, the length of the sound absorbing tube 100 corresponding to the frequency band can be increased to improve the absorption effect of the noise in the frequency band.

[0051] Of course, the configuration of the sound absorbing tube 100 is not limited to this. In other embodiments of the present invention, the sound absorbing holes 102 of at least two of the sound absorbing tubes 100 have different sizes. By adjusting the size of the sound absorbing holes 102, the sound absorbing tube 100 can effectively absorb noises of various frequencies generated during the operation of the range hood 10. This design can also be adjusted according to actual needs to meet different sound absorption requirements. For example, if the noise in a certain frequency band is large, the size of the sound absorbing holes 102 corresponding to the frequency band can be increased to improve the absorption effect of the noise in the frequency band.

[0052] Finally, it should be noted that the above implementation modes are only used to illustrate the present invention, rather than to limit the present invention. Although the present invention is described in detail with reference to the embodiments, a person skilled in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. A sound-absorbing tube, characterized in that: A sound absorbing cavity is formed inside the sound absorbing tube, a sound absorbing hole is provided at the end of the sound absorbing tube, the sound absorbing hole is communicated with the sound absorbing cavity, and an inner wall of the sound absorbing hole has a guide slope, which is suitable for guiding liquid entering the sound absorbing cavity along with the air flow.

2. The sound absorbing tube according to claim 1, characterized in that: One end of the sound absorbing tube has an airflow guiding surface connected to the guiding inclined surface, and the airflow guiding surface forms a first angle with the guiding inclined surface.

3. The sound absorbing tube according to claim 2, characterized in that: The first angle is α, and the value range of α is 90 degrees to 140 degrees.

4. The sound absorbing tube according to claim 1, characterized in that: The guiding inclined surface forms a second angle β with the bottom wall of the sound absorbing cavity, and the second angle β is greater than 90 degrees.

5. The sound absorbing tube according to claim 1, characterized in that: The sound-absorbing tube is a 1 / 4 wavelength tube.

6. The sound absorbing tube according to any one of claims 1 to 5, characterized in that: The sound absorbing tube is in the shape of an elongated strip.

7. A range hood, characterized in that: include: case; A volute, the volute being arranged inside the housing; The sound absorbing tube according to any one of claims 1 to 6 is arranged on the shell, and the sound absorbing hole of the sound absorbing tube is arranged downward.

8. The range hood according to claim 7, characterized in that: There are a plurality of sound absorbing pipes, and the plurality of sound absorbing pipes are arranged around the volute.

9. The range hood according to claim 7, characterized in that: There are a plurality of the sound absorbing tubes, and the plurality of the sound absorbing tubes are arranged side by side.

10. The range hood according to any one of claims 8 to 9, characterized in that: The sound absorbing cavities of at least two of the sound absorbing tubes have different lengths, and / or the sound absorbing holes of at least two of the sound absorbing tubes have different sizes.

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