CN211316283U

CN211316283U - Noise-reducing range hood

Info

Publication number: CN211316283U
Application number: CN201922121404.7U
Authority: CN
Inventors: 艾穗江; 曾凤清; 丁佳俐; 丁敏; 钟承俊
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: 2020-08-21
Anticipated expiration: 2029-11-29

Abstract

The utility model discloses a range hood that can reduce noise, including the cigarette machine body, the cigarette machine body includes the shell, the bottom of shell includes the inlet scoop, inlet scoop department is equipped with the collection petticoat pipe, the top of collection petticoat pipe is equipped with leads the sound device, it includes the mount pad to lead the sound device, the mount pad includes the cavity, be equipped with the multi-disc in the cavity and lead the sound board, the multi-disc leads the sound board and separates into a plurality of sound channels of leading with the cavity, it includes degree of depth and width to lead the sound channel, the degree of depth and the width ratio of leading the sound channel are not less than 1. The utility model discloses an increase the sound guide device in the top of range hood's collection petticoat pipe, the noise is direct directive people's ear not, has reduced the received noise intensity of people's ear, has improved people's use and has experienced. Meanwhile, the sound guide device is hidden in the cigarette machine body, and the lower part of the sound guide device is shielded by the smoke collecting hood, so that the space of the cigarette machine body is reasonably utilized, and the pollution of the smoke to the sound guide device is avoided.

Description

Noise-reducing 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: provides a low-noise range hood.

The utility model provides a solution of its technical problem is: the utility model provides a range hood that can reduce noise, includes the cigarette machine body, the cigarette machine body includes the shell, the bottom of shell includes the inlet scoop, inlet scoop department is equipped with the collection petticoat pipe, the top of collection petticoat pipe is equipped with leads the sound device, it includes the mount pad to lead the sound device, the mount pad includes the cavity, be equipped with the multi-disc in the cavity and lead the sound board, the multi-disc leads the sound board and separates into a plurality of sound channels of leading with the cavity, it includes degree of depth and width to lead the sound channel, the degree of depth and the width ratio of leading the sound channel are not less than 1.

The utility model has the advantages that: the utility model discloses an increase the sound guide device in the top of range hood's collection petticoat pipe, nevertheless have the sound guide plate of certain degree of depth through the multi-disc is sparse among the sound guide device, retrain the noise that spreads from the cigarette machine inlet scoop (the most main noise propagates indoor way when in actual use), and the sound guide plate is with the directional propagation of the 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. Meanwhile, the sound guide device is hidden in the smoke machine body, the lower part of the sound guide device is shielded by the smoke collecting hood, the space of the smoke machine body is reasonably utilized, and meanwhile, in the working process, the oil smoke firstly passes through the smoke collecting hood and then passes through the sound guide device, so that the pollution of the oil smoke to the sound guide device is avoided.

As a further improvement of the technical scheme, an oil filter screen is further arranged below the smoke collecting hood, the cross section of the sound guide channel is rectangular, the oil filter screen comprises a plurality of rectangular meshes, and the width value range of the meshes is 5-20 mm. Because the sound guide device is fixed above the oil filter screen, when the noise guided by the sound guide plate passes through the oil filter screen, if the meshes of the oil filter screen are too small, the guided noise can be diffracted and dispersed when passing through the meshes, so that the noise cannot be effectively guided to the direction far away from people; if the mesh of the oil screen is too large, the oil filtering effect is reduced. What form between the sound board leads in this application is square wind channel and leads the sound passageway, and the mesh shape of oil cleaner screen selects to medium width, longer rectangular hole, can balance two kinds of different demands.

In some embodiments, an oil filter screen may not be arranged below the smoke collecting hood, an oil receiving plate and an oil cup are arranged below the smoke collecting hood, the oil receiving plate is arranged in a downward inclined manner from front to back, and the oil cup is located at the bottom behind the oil receiving plate. The oil receiving plate is located below the built-in sound guide plate and can receive dirty oil in the range hood, and the oil collected by the oil receiving plate is collected in the oil cup to be recovered, so that the hidden oil dripping danger is avoided.

As a further improvement of the above technical solution, an outer diameter of the oil receiving plate is smaller than an inner diameter of the fume collecting hood, and a lower surface of the oil receiving plate includes a flow rectification surface. The oil fume can conveniently pass through the rectifying surface of the oil receiving plate.

As a further improvement of the technical scheme, a buckle is arranged below the fume collecting hood, and the oil receiving plate is detachably connected with the fume collecting hood through the buckle. The oil receiving plate is arranged in the fume collecting hood through the buckle, so that the disassembly and the washing are more convenient.

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 side sectional view of the range hood of the present invention;

fig. 2 is a schematic perspective view of the sound guide device of the present invention;

FIG. 3 is a front view of an oil screen of the present invention;

fig. 4 is an exploded view of the range hood 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.

In a first embodiment, referring to fig. 1 to 3, a range hood capable of reducing noise includes a range hood body 100, the range hood body 100 includes a shell 110, the bottom of the shell 110 includes an air suction opening, the air suction opening is provided with a smoke collecting hood 200, a sound guide device 300 is provided above the smoke collecting hood 200, the sound guide device 300 includes a mounting seat 310, the mounting seat 310 includes a cavity 312, a plurality of sound guide plates 320 are provided in the cavity 312, the cavity is divided into a plurality of sound guide channels 330 by the plurality of sound guide plates 320, the sound guide channels 330 include a depth and a width, and a depth-to-width ratio of the sound guide channels 330 is not less than 1. The sound guide device 300 comprises a mounting seat 310, the mounting seat 310 comprises an outer frame 311 and a cavity 312, a plurality of sound guide plates 320 are mounted in the cavity 312, the sound guide plates 320 are arranged at equal intervals in the front-back direction, the front direction refers to the direction in which a person faces a cigarette making machine and is generally the direction in which the person operates the cigarette making machine, and the back direction refers to the mounting direction of the cigarette making machine and is generally the wall surface of a kitchen. The cavity 312 is divided into a plurality of sound guiding channels 330 by the sound guiding plates 320 and the outer frame 311, wherein the height of the outer frame 311 is H, and the range of the selected value of H may be: 60-100mm (according to the installation size of the bottom of the current common household cigarette machine), and the distance between two adjacent sound guide plates 320 is L, and the selected value range of L can be: 20-50mm, wherein the height of the outer frame 311 is the depth of the sound guide channel 330, and the distance between the sound guide plates 320 is the width of the sound guide channel 330, preferably, H is 60mm and L is 30mm in this embodiment, so the ratio of the depth to the width of the sound guide channel is H: and L is 2: 1. During operation, because the inside that the oil smoke need enter into the cigarette machine again through the sound guide plate earlier, consequently, the interval between the sound guide plate 320 should not be too little, otherwise can influence the effect of induced drafting of cigarette machine, and the interval between the sound guide plate 320 also can not be too big simultaneously, and too big interval can obviously reduce the effect of leading the sound, and the directionality effect of the transmission of sound wave worsens promptly.

Further as a preferred embodiment, an oil filter screen 400 is further disposed below the smoke collecting hood 200, the cross section of the sound guide channel 330 is rectangular, and the oil filter screen 400 includes a plurality of rectangular mesh holes. The width of the mesh is h, and the value range of h is 5mm-20 mm. Further preferably, an oil receiving plate 500 is further disposed below the oil filter screen 400.

In the second embodiment, referring to fig. 1, 2 and 4, unlike the first embodiment, there is no oil filter screen below the smoke collecting hood 200, the smoke collecting hood 200 is provided with an oil receiving plate 500 and an oil cup 600, the oil receiving plate 500 is arranged obliquely from front to back, and the oil cup 600 is located at the bottom behind the oil receiving plate.

Further as a preferred embodiment, the outer diameter of the oil receiving plate 500 is smaller than the inner diameter of the fume collecting hood, and the lower surface of the oil receiving plate comprises a rectifying surface.

Further as a preferred embodiment, a buckle 210 is arranged below the smoke collecting hood 200, and the oil receiving plate 500 is detachably connected with the smoke collecting hood through the buckle.

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 range hood that can degrade noise, includes the cigarette machine body, the cigarette machine body includes the shell, the bottom of shell includes inlet scoop, its characterized in that: the utility model discloses a cigarette case, including wind inlet scoop department, sound collecting cover, sound guiding device, mount pad, installation, the cavity is drawn together to the wind inlet scoop department, the top of smoke collecting cover is equipped with the sound guiding device, the sound guiding device includes the mount pad, the mount pad includes the cavity, be equipped with the multi-disc sound guiding plate in the cavity, the multi-disc sound guiding plate separates into a plurality of sound guiding channel with the cavity, sound guiding channel includes degree of depth and width, sound guiding channel's degree of depth is not less than 1 with.

2. A noise reducing range hood as defined in claim 1, wherein: the lower part of the smoke collecting hood is also provided with an oil filter screen, the cross section of the sound guide channel is rectangular, and the oil filter screen comprises a plurality of rectangular meshes.

3. The range hood capable of reducing noise according to claim 2, wherein: the width of the mesh ranges from 5mm to 20 mm.

4. A noise reducing range hood as defined in claim 1, wherein: the lower of collection petticoat pipe is equipped with connects oiled plate and oil cup, connect the oiled plate from going to the setting of backward decline, the oil cup that is located the bottom that connects the oiled plate rear.

5. The range hood of claim 4, wherein: the outer diameter of the oil receiving plate is smaller than the inner diameter of the smoke collecting cover, and the lower surface of the oil receiving plate comprises a rectifying surface.

6. The range hood of claim 4, wherein: the below of collection petticoat pipe is equipped with the buckle, connect the oiled-plate to pass through buckle and collection petticoat pipe releasable connection.