CN211041104U

CN211041104U - Noise-reducing sound guide ring structure and range hood

Info

Publication number: CN211041104U
Application number: CN201922121413.6U
Authority: CN
Inventors: 艾穗江; 曾凤清; 丁佳俐; 丁敏; 钟承峻
Original assignee: Guangdong Wanjiale Kitchen Technology Co Ltd
Current assignee: Guangdong Wanjiale Kitchen Technology Co Ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-07-17
Anticipated expiration: 2029-11-29

Abstract

The utility model discloses a degradable leads voice coil of voice coil loudspeaker voice coil structure of making an uproar, including the circular shape mount pad, the mount pad includes the cavity, be equipped with the circular shape of multi-disc in the cavity and lead voice coil loudspeaker voice coil's external diameter from inside to outside crescent, a plurality of annular lead voice channel is separated into with the cavity to the multi-disc lead voice coil loudspeaker voice coil, lead the voice channel and include degree of depth and width, lead the degree of depth and the width ratio of voice channel and be not less than 1. Through the research discovery, range hood's noise concentrates on the well high frequency channel more than 500Hz, and this section noise wavelength is shorter, and is the same like short-frequency wave such as light wave, has certain directive property in nature, the utility model discloses an annular sound guide channel that multi-disc sound guide ring is constituteed, retrains the noise that spreads from the cigarette machine inlet scoop (the most main noise propagates indoor way during the in-service use), and sound guide ring is with the directional propagation of sound wave of well high frequency channel, makes it not direct directive people's ear, has reduced the noise intensity that people's ear received, has improved people's use and has experienced.

Description

Noise-reducing sound guide ring structure and range hood

Technical Field

The utility model relates to a household electrical appliances field, especially lampblack absorber.

Background

At present, the range hood becomes a popular electrical appliance for residents and families in China, and can be used for removing smoke generated during cooking and keeping the interior of a kitchen clean and healthy. However, in the working process of the range hood, strong noise is generated along with the fan, and the housewives or kitchen operators can generate adverse reactions such as headache, dysphoria, palpitation and the like when being in the environment for a long time, thereby causing serious influence on the body health. Accordingly, the quiet range hood design has become a problem that manufacturers generally attach importance.

Noise reduction measures usually adopted for reducing noise mainly include noise reduction at a sound source, noise reduction during propagation, or active noise reduction. The noise reduction at the sound source is mainly realized by optimizing internal flow field structures such as an air duct and the like, for example, the front end radius of a volute tongue of a fan is improved, the gap between the outer edge of an impeller of the centrifugal fan and the volute tongue of the centrifugal fan is increased, the volute tongue of the centrifugal fan is designed in an inclined mode, and the like, so that the noise reduction purpose is achieved, the universality and the structural adaptability are poor, different external flow field structures need to be matched, and the universality is not strong only for single products or products of the same series; noise reduction in the transmission process is mainly realized by adding sound-absorbing cotton or a silencing device in the range hood, but after long-term use, the sound-absorbing cotton loses the noise reduction effect due to oil absorption, has low durability and hidden fire hazards, and the silencing device has high cost and increases air duct resistance; and to the initiative of lampblack absorber and falling the noise, at present the most general way is at the inside initiative of arranging of cigarette machine and falls the device of making an uproar, but the lampblack absorber is in the in-service use process, and its inside cavity receives the oil smoke to influence, and the environment is very abominable, exposes the device of making an uproar of falling under the oil smoke environment, can receive the corruption of high temperature greasy dirt, influences the life, the system stability that fall the device of making an uproar, and simultaneously, the cost ratio of the.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the noise reduction equipment is simple in structure and capable of effectively reducing noise of the range hood.

The utility model provides a solution of its technical problem is: the utility model provides a noise-reducing sound conduction ring structure, includes the circular shape mount pad, the mount pad includes the cavity, be equipped with the circular shape sound conduction ring of multi-disc in the cavity, the multi-disc the external diameter of leading the voice coil loudspeaker voice coil increase gradually from inside to outside, the sound conduction ring of multi-disc separates into a plurality of annular sound conduction passageways with the cavity, sound conduction passageway includes degree of depth and width, sound conduction passageway's degree of depth and width ratio are not less than 1.

The utility model has the advantages that: through the research discovery, range hood's noise concentrates on the well high frequency channel more than 500Hz, and this section noise wavelength is shorter, and is the same like short-frequency wave such as light wave, has certain directive property in nature, the utility model discloses an annular sound guide channel that multi-disc sound guide ring is constituteed, retrains the noise that spreads from the cigarette machine inlet scoop (the most main noise propagates indoor way during the in-service use), and sound guide ring is with the directional propagation of sound wave of well high frequency channel, makes it not direct directive people's ear, has reduced the noise intensity that people's ear received, has improved people's use and has experienced.

As a further improvement of the technical scheme, the mounting seat comprises a fixed support plate, the fixed support plate is provided with a plurality of clamping grooves, and the sound guide ring is mounted on the clamping grooves. Lead the voice coil loudspeaker voice coil and can freely dismantle and assemble through the draw-in groove, have better convenience.

As a further improvement of the above technical solution, a plurality of voice coils are arranged in the cavity at equal intervals, the distance between two adjacent voice coils is the width of the voice channel, and the height of the cavity is the depth of the voice channel.

As a further improvement of the technical scheme, the distance between the two adjacent voice coils is L, the value range of L is 20-40mm, the height of the cavity is H, and the value range of H is 40-80 mm.

As a further improvement of the technical scheme, the sound guide ring comprises an annular end face, the included angle between the generatrix of the annular end face and the horizontal plane is α, the value range of α is 45-90 degrees, when a is less than 45 degrees, the sound guide ring increases the resistance of oil smoke entering an air duct of the range hood, smoke discharge is not facilitated, when a is more than 90 degrees, noise can be guided to a user during cooking, and the intensity of the noise received by the ear of the user is improved.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.

Fig. 1 is a schematic structural view of the range hood of the present invention;

fig. 2 is a schematic structural view of the sound guiding ring of the present invention.

Fig. 3 is a side sectional view of the sound guide ring of the present invention.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention. The preferred embodiment of the present invention is shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution. Meanwhile, all technical characteristics in the invention can be interactively combined on the premise of not conflicting with each other.

Referring to fig. 1 to 3, a range hood includes a range hood body 100, an air suction opening is formed below the range hood body 100, a circular oil filter screen 200 is formed below the air suction opening, a voice coil guide structure 300 is formed below the oil filter screen, the voice coil guide structure 300 is fixed to the bottom of the range hood body 100, the voice coil guide structure 300 includes a circular mounting seat 310, the mounting seat 310 includes an outer frame 311 and a cavity 312, a plurality of circular voice coils 320 are arranged in the cavity 312, the outer diameters of the plurality of voice coils 320 are gradually increased from inside to outside, the plurality of voice coils 320 divide the cavity into a plurality of annular voice guide channels 330, the voice guide channels 330 include a depth and a width, the ratio of the depth to the width of the voice guide channels is not less than 1, wherein the height of the outer frame 311 is H, the range of the selected value of H may be 40-80mm (calculated according to the installation size of the bottom of the range hood for a common household at present), and the range of the distance between two adjacent voice coils 320 may be L, namely, the range of the range hood 311-40 mm, the range of the range hood 320 may be 20-300-60 mm, and the range of the range.

Further, as a preferred embodiment, the mounting seat 310 includes a fixing support 313, the fixing support 313 is provided with a plurality of slots, and the voice coil 320 is mounted on the slots.

Further as a preferred embodiment, the plurality of sound guiding rings 320 are arranged in the cavity at equal intervals, the distance between two adjacent sound guiding rings 320 is the width of the sound guiding channel, and the height of the cavity is the depth of the sound guiding channel.

Further as a preferred embodiment, the sound guiding ring includes an annular end surface, an included angle between a generatrix of the annular end surface and a horizontal plane is α, and the value of the α ranges from 45 ° to 90 °.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the details of the embodiments shown, but is capable of various modifications and substitutions without departing from the spirit of the invention.

Claims

1. The utility model provides a noise reduction's leading sound circle structure which characterized in that: the voice coil is characterized by comprising a circular mounting seat, wherein the mounting seat comprises a cavity, a plurality of circular voice guide rings are arranged in the cavity, the outer diameter of each voice guide ring is gradually increased from inside to outside, the voice guide rings divide the cavity into a plurality of annular voice guide channels, each voice guide channel comprises a depth and a width, and the depth-width ratio of each voice guide channel is not less than 1.

2. A noise-reducing sound-guiding ring structure according to claim 1, characterized in that: the mounting seat comprises a fixed support plate, a plurality of clamping grooves are formed in the fixed support plate, and the sound guide ring is mounted on the clamping grooves.

3. A noise-reducing sound-guiding ring structure according to claim 1, characterized in that: the voice coils are distributed in the cavity at equal intervals, the distance between every two adjacent voice coils is the width of the voice guide channel, and the height of the cavity is the depth of the voice guide channel.

4. The noise-reducing leading voice coil structure according to claim 3, wherein the distance between two adjacent leading voice coils is L, the value range of L is 20-40mm, the height of the cavity is H, and the value range of H is 40-80 mm.

5. The noise-reducing sound leading coil structure according to claim 4, wherein the sound leading coil comprises an annular end face, an included angle between a generatrix of the annular end face and a horizontal plane is α, and the value range of α is 45-90 degrees.