Noise reduction device and range hood using the same

Abstract

The present invention discloses a noise reduction device and a range hood using the same, the noise reduction device comprises a range hood bellows plate, the range hood bellows plate is provided with a connecting portion connected to the smoke collecting hood, including: a sound energy dissipation component, which is arranged on the range hood bellows plate, and the sound energy dissipation component is used to consume sound energy; a sound energy collecting component, which is arranged at the air inlet of a volute in the bellows; a sound pipe, the two ends of which are respectively connected to the sound energy dissipation component and the sound energy collecting component, the noise at the air inlet of the volute is collected and concentrated by the sound energy collecting component, and then the noise is introduced into the sound energy dissipation component through the sound pipe, and finally the energy of the sound wave is consumed by the friction damping energy consuming component, so as to achieve the noise reduction effect.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and in particular to a noise reduction device and a range hood using the same. Background Art

[0002] Range hoods have become one of the indispensable kitchen appliances in modern families. Air volume, air pressure and noise are the core indicators of range hoods.

[0003] In recent years, the domestic range hood market has been focused on high air volume and high suction. As air volume increases, the noise generated by range hoods has also grown. When cooking, turning on the range hood obscures the ability to hear conversations, phone calls, doorbells, and children. This high noise level can even cause irritation, headaches, and heart palpitations in homemakers and kitchen workers. Long-term use can have serious consequences for physical and mental health. Therefore, noise has become a pressing technical issue with existing range hoods. As people's expectations for quality of life rise, users are increasingly concerned about range hood noise levels when purchasing a range hood. The noise performance of a range hood is a key factor in product competitiveness. Summary of the Invention

[0004] The present invention aims to solve one of the problems existing in the existing related technologies to at least a certain extent. To this end, the present invention provides a noise reduction device and a range hood using the same.

[0005] A noise reduction device includes a range hood bellows plate, wherein the range hood bellows plate is provided with a connecting portion connected to a smoke collecting hood, including:

[0006] An acoustic energy dissipation component is provided on the bellows plate of the range hood, and is used to consume acoustic energy;

[0007] A sound energy collecting member, which is arranged at the air inlet of the volute in the wind box;

[0008] The sound pipe has two ends connected to the sound energy dissipation component and the sound energy collecting component respectively.

[0009] Furthermore, the sound energy dissipation component includes a shell arranged on the bellows plate of the range hood, a sound channel is provided in the shell, one end of the sound channel is connected to the sound pipe, and the other end of the sound channel is provided with a friction damping energy dissipation component.

[0010] Furthermore, the sound channel is spiral-shaped, and the friction damping energy dissipation component is arranged at the center of the sound channel.

[0011] Furthermore, the friction damping energy dissipation component includes a shaft body arranged in the sound channel, and a rotating wheel is rotatably connected to the shaft body.

[0012] Furthermore, a plurality of protrusions are provided on the circumference of the rotating wheel.

[0013] Furthermore, the protrusion is in the shape of a dot or a spike.

[0014] Furthermore, a viscous friction layer is provided between the shaft and the rotating wheel.

[0015] Furthermore, the circumferential surface of the rotating wheel is a friction surface.

[0016] Furthermore, the sound energy collecting component is trumpet-shaped, the sound inlet of the sound energy collecting component is located at the air inlet of the volute in the bellows, and the sound outlet of the sound energy collecting component is connected to the sound pipe.

[0017] A range hood comprises the noise reduction device as described above.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] The present invention collects and concentrates the noise at the air inlet of the volute through the sound energy collecting component, then introduces the noise into the sound energy dissipation component through the sound pipe, and finally consumes the energy of the sound wave through the friction damping energy dissipation component to achieve the noise reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is one of the three-dimensional schematic diagrams of a noise reduction device of the present invention;

[0021] Figure 2 This is a second three-dimensional schematic diagram of a noise reduction device of the present invention (hidden shell panel, sound energy collection component and sound pipe);

[0022] Figure 3 For the present invention Figure 2 A magnified schematic diagram of point A in the middle;

[0023] Figure 4 This is a three-dimensional schematic diagram of a range hood according to the present invention;

[0024] Figure 5 It is a cross-sectional perspective schematic diagram of a range hood of the present invention. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of 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 should fall within the scope of the technical solutions claimed by the present invention.

[0026] like Figure 1-5 As shown, a noise reduction device includes a range hood bellows plate 1, wherein the range hood bellows plate 1 is provided with a connecting portion connected to a smoke collecting hood, including:

[0027] An acoustic energy dissipation component 2 is provided on the range hood bellows plate 1 and is used to consume acoustic energy;

[0028] The sound energy collecting member 3 is arranged at the air inlet of the volute in the wind box;

[0029] The sound pipe 4 has two ends connected to the sound energy dissipation component 2 and the sound energy collecting component 3 respectively. The noise at the air inlet of the volute is collected and concentrated through the sound energy collecting component 3, and then the noise is introduced into the sound energy dissipation component 2 through the sound pipe 4. Finally, the energy of the sound wave is consumed by the friction damping energy consuming component 5 to achieve the effect of noise reduction.

[0030] The sound energy dissipation component 2 of the present invention includes a shell 20 arranged on the range hood bellows plate 1, and a sound channel 21 is provided in the shell 20. One end of the sound channel 21 is connected to the sound pipe 4, and the other end of the sound channel 21 is provided with a friction damping energy dissipation component 5. The energy of the back-and-forth vibration of the sound can drive the friction damping energy dissipation component 5 to rotate clockwise or counterclockwise, and the friction damping energy dissipation structure built into the friction damping energy dissipation component 5 consumes the rotational energy, thereby consuming the energy of the sound wave.

[0031] The sound channel 21 of the present invention is spiral-shaped, and the friction damping energy dissipation component 5 is arranged at the center of the sound channel. The noise is further compressed from the sound channel 21, the sound energy density is increased, the sound intensity is enhanced, and then the sound energy is consumed by the friction damping energy dissipation component 5.

[0032] The friction damping energy dissipation component 5 of the present invention includes a shaft 50 arranged in the sound channel 21, and a wheel 51 is rotatably connected to the shaft 50. The sound waves drive the wheel 51 to rotate, and the rotation process of the wheel 51 and the shaft 50 consumes kinetic energy.

[0033] The rotating wheel 51 of the present invention is provided with a plurality of protrusions 52 on its circumference. The protrusions 52 are in the shape of dots or spikes. The protrusions 52 are provided to increase the rotational force on the surface.

[0034] A viscous friction layer 53 is provided between the shaft 50 and the rotating wheel 51 of the present invention. Preferably, the viscous friction layer 53 can be a viscous glue or a friction rubber layer. The viscous friction layer 53 can consume kinetic energy during the rotation of the rotating wheel 51.

[0035] The circumferential surface of the rotating wheel 51 of the present invention is a friction surface, and the rotational force of the surface is increased by setting it as a friction surface.

[0036] The sound energy collecting component 3 described in the present invention is in the shape of a trumpet, and the sound inlet of the sound energy collecting component 3 is located at the air inlet of the volute in the bellows, and the sound outlet of the sound energy collecting component 3 is connected to the sound pipe 4. By setting the sound energy collecting component 3 to be in the shape of a trumpet, the noise generated by the fan in the volute is introduced into the sound pipe 4 through the sound energy gathering effect of the trumpet mouth, and then introduced into the sound energy dissipation component 2 through the sound pipe 4 to realize sound wave energy consumption, thereby achieving a good noise reduction effect.

[0037] A range hood comprises the noise reduction device as described above.

[0038] The specific implementation methods described above provide a detailed description of the technical solutions and beneficial effects of the present invention. It should be understood that the above is only the most preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, supplements and equivalent substitutions made within the scope of the principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A noise reduction device, comprising a range hood bellows plate (1), wherein the range hood bellows plate (1) is provided with a connection portion connected to a smoke collecting hood, characterized in that: include: An acoustic energy dissipation component (2) is arranged on the range hood bellows plate (1), and the acoustic energy dissipation component (2) is used to consume acoustic energy; an acoustic energy collecting member (3) disposed at the air inlet of the volute in the wind box; a sound pipe (4), the two ends of which are respectively connected to the sound energy dissipation component (2) and the sound energy collecting component (3); The sound energy dissipation component (2) comprises a shell (20) arranged on the range hood bellows plate (1), a sound channel (21) is provided in the shell (20), one end of the sound channel (21) is connected to the sound pipe (4), and the other end of the sound channel (21) is provided with a friction damping energy dissipation component (5); The friction damping energy dissipation component (5) comprises a shaft (50) arranged in the sound channel (21), and a rotating wheel (51) is rotatably connected to the shaft (50).

2. The noise reduction device according to claim 1, characterized in that The sound channel (21) is in a spiral shape, and the friction damping energy dissipation component (5) is arranged at the center of the sound channel (21).

3. The noise reduction device according to claim 1, characterized in that A plurality of protrusions (52) are provided on the circumference of the rotating wheel (51).

4. The noise reduction device according to claim 3, characterized in that: The protrusion (52) is in the shape of a dot or a spike.

5. The noise reduction device according to claim 1, characterized in that A viscous friction layer (53) is provided between the shaft (50) and the rotating wheel (51).

6. The noise reduction device according to claim 1, characterized in that The circumferential surface of the rotating wheel (51) is a friction surface.

7. The noise reduction device according to claim 1 or 2, characterized in that: The sound energy collecting component (3) is trumpet-shaped, the sound inlet of the sound energy collecting component (3) is located at the air inlet of the volute in the bellows, and the sound outlet of the sound energy collecting component (3) is connected to the sound pipe (4).

8. A range hood, characterized in that: The range hood comprises the noise reduction device according to any one of claims 1 to 7.

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