CN212108596U

CN212108596U - Smoke exhaust ventilator

Info

Publication number: CN212108596U
Application number: CN202020782633.3U
Authority: CN
Inventors: 刘凡继; 贾志强; 王佳新; 蒋济武; 何新奎
Original assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Priority date: 2020-05-12
Filing date: 2020-05-12
Publication date: 2020-12-08
Anticipated expiration: 2030-05-12

Abstract

The utility model discloses a range hood, which comprises a frame part and a head part, wherein a fan component is arranged in a frame cavity of the frame part; the machine head part extends downwards from the rear part of the bottom end surface of the machine frame part; wherein, the front side wall of the machine head part is arranged at the back of the front panel of the machine frame part. The range hood also comprises a noise reduction assembly which is at least arranged in the machine head cavity of the machine head part. The noise reduction assembly comprises a plurality of vertically extending sound absorption cotton assemblies which are arranged in the handpiece cavity along the transverse direction at intervals. The utility model discloses a range hood has solved european style range hood and short-range hood's defect, and nose portion is the platykurtic and pastes the wall design, can avoid bumping with the frying pan of top of a kitchen range etc. and can reliably take out oil smoke in addition, and the position of frame portion can promote, and thickness is littleer around, can prevent to collide with the people, and furtherly still can improve user experience through the output of falling the noise reduction subassembly in order to reduce noise at the head intracavity setting, promotes product property ability.

Description

Smoke exhaust ventilator

Technical Field

The utility model belongs to the kitchen appliances field specifically, relates to a range hood.

Background

Along with the improvement of the requirements of users, the range hood continuously optimizes the performance while continuously solving the pain points of the users, thereby promoting different styles. Nowadays, the demand for miniaturized and light and thin range hood products is greatly improved in the face of more and more single people and small-area houses, however, various problems or defects exist in most of the existing products, and especially in the aspects of product appearance, working noise and the like, the user satisfaction is difficult to obtain, and the problem becomes a pain point which needs to be solved urgently by research and development personnel.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned not enough or defect among the prior art, the utility model provides a novel range hood to promote and produce property ability, promote user experience.

In order to achieve the above object, the utility model provides a range hood, include:

the fan assembly is arranged in a rack cavity of the rack part; and

a nose portion extending downward from a rear portion of a bottom end surface of the frame portion;

wherein a nose front side wall of the nose portion is provided rearward with respect to a front panel of the frame portion.

Optionally, the machine head rear side wall of the machine head part is aligned with the machine frame rear enclosing plate of the machine frame part up and down, and the bottom of the machine head part is formed with a cigarette smoking port of the cigarette machine which is inclined forwards and is opened downwards.

In some embodiments, the range hood includes a noise reduction assembly disposed at least in a nose cavity of the nose portion.

Optionally, the noise reduction assembly comprises a plurality of vertically extending sound-absorbing cotton assemblies, and the sound-absorbing cotton assemblies are arranged in the handpiece cavity along the transverse direction at intervals in sequence.

Optionally, inhale the cotton subassembly of sound and include that the cotton and vertical platelike middle installing support are inhaled to the side direction, the cotton laminating of sound is inhaled to the side direction and is set up on the lateral wall of at least one side of middle installing support.

Optionally, the middle mounting bracket is mounted on a head rear side wall of the nose section, and the lateral sound absorbing cotton extends from the head rear side wall to the head front side wall.

Optionally, the sound absorbing cotton assembly is arranged in the vertical middle of the handpiece cavity.

In some embodiments, the range hood includes the transition coupling assembling of connection between the aircraft nose portion with the rack portion, the top of aircraft nose front side wall is formed with aircraft nose lateral wall opening forward in the opening, the transition coupling assembling includes that the rear end shroud is in on the aircraft nose lateral wall opening and the front end orientation the oblique housing cap of the anterior extension of bottom of rack portion, be formed with the intercommunication in the oblique housing cap the transition chamber in frame chamber and aircraft nose chamber.

Optionally, a head top wall opening with an upward opening is formed in the top wall of the head portion, and the head top wall opening communicates the head cavity and the rear portion of the rack cavity.

In some embodiments, the fan assembly is disposed in an inclined front-to-rear orientation within the housing cavity, with a fan axis passing through a front wind port end of the fan assembly extending forwardly and obliquely downwardly.

The utility model discloses an among the range hood, the aircraft nose portion is the design of platykurtic wall of subsides from the bottom face rear portion downwardly extending of frame portion, aircraft nose portion, avoids colliding with the frying pan of top of a kitchen range etc. can be close to the top of a kitchen range in addition and promote oil smoke suction effect, and the position of frame portion can promote in order to prevent to collide with the people, is suitable for little kitchen space and uses. And furthermore, a noise reduction assembly can be arranged in the machine head cavity to reduce the external output of the working noise in the smoke machine and improve the user experience.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 and 2 are schematic structural diagrams of a conventional near-suction range hood and a conventional european range hood, respectively;

fig. 3 is a perspective view of a range hood according to an embodiment of the present invention;

FIG. 4 is an assembled exploded view of FIG. 3;

figures 5 and 6 are front and side views, respectively, of the range hood of figure 3 illustrating the fan being tilted and the noise path from the fan outlet to the smoke exhaust inlet of the range hood, respectively, with arrows representing noise sound waves;

fig. 7, 8 and 9 are a side view, an exploded view and a front view respectively showing the range hood with the noise reduction assembly added; and

fig. 10 is a perspective view of the constituent structure of the noise reduction assembly.

Description of reference numerals:

frame part 2 transition connecting assembly

3 head 4 fan subassembly

5 iron pot 6 check valve

7 filter screen 8 oil cup

9 acoustic wool assembly 10 noise vortex

11 frame back panel 12 front decorative cover

13 frame left coaming and 14 frame right coaming

15 rack top plate

21 inclined cover 22 connecting enclosure frame

Front side wall of smoking port 32 machine head of 31-type cigarette making machine

33 rear side wall of head 34 head ceiling wall

41 front tuyere end 42 rear tuyere end

43 volute air outlet

91 lateral sound-absorbing cotton 92 middle mounting bracket

321 nose side wall opening 341 nose top wall opening

411 left volute bracket 412 right volute bracket

421 rear volute bracket

A frame cavity B transition cavity

Front and back width of guide plate of head cavity D of C machine

a downward-moving front rake angle OO' fan axis

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Fig. 1 and 2 show a common near-suction range hood and a european range hood, respectively. The near-suction range hood can be closer to the smoke source, but in the use, the user easily collides with range hood's bottom when operating frying pan 5, and the oval frame in figure 1 marks the position promptly to it is not good to cause the experience effect, and the oil smoke easily diffuses forward moreover, and smoking effect is also not good. The European-style range hood has the advantage that the front width D and the rear width D of the guide plate are too large, so that the head of a user is easy to collide with the guide plate in the use process, namely the position is marked by the oval frame in fig. 2, and particularly when the kitchen space is small. And the fume outlet of the fume machine of the European-style range hood is too much higher than the surface of the cooking bench, the fume is easy to diffuse, and the fume suction effect is not good.

Therefore, the utility model discloses the pertinence provides a novel range hood. As shown in fig. 3 and 4, in the embodiment, the range hood includes:

a fan assembly 4 is arranged in a rack cavity A of the rack part 1; and

a head section 3 extending downward from the rear of the bottom end surface of the frame section 1;

the head front side wall 32 of the head unit 3 is provided rearward with respect to the front panel of the frame unit 1.

It can be seen that, because the nose portion 3 extends downward from the rear portion of the bottom end surface of the frame portion 1, and the nose front side wall 32 is disposed rearward relative to the front panel of the frame portion 1 (i.e., the front panel of the front decorative cover 12), the thickness of the nose portion 3 in the front-rear direction is smaller than that of the frame portion 1, so that the problem of collision and interference with the frying pan 5, which is caused by a close-suction range hood, is not easily generated, but the same effect of being close to a kitchen range smoke source can be achieved, and compared with an european range hood, the front-rear thickness of the frame portion 1 is not large, and the height can be increased, so that the problem of collision of a user with.

In the embodiment shown in fig. 3, the head portion 3 is designed to be flat and close to the wall, and the overall front-rear width of the head portion 3 is greatly reduced compared with the head width of the near-suction range hood. Referring to fig. 6, the nose rear side wall 33 of the nose portion 3 is aligned up and down with the frame back panel 11 of the frame portion 1, and the bottom of the nose portion 3 is formed with a cigarette suction port 31 of the cigarette maker which is inclined forward and opened downward. The left and right width of the flat machine head part can be designed to be larger so as to enlarge the width of the smoking port 31 of the cigarette machine and improve the smoking effect. The front-rear width of the frame portion 1 is also relatively small. The structure and size design of the novel range hood are more suitable for kitchens with small spaces.

Fig. 5 and 6 are front and side views, respectively, of the range hood of fig. 3, illustrating the fan being tilted and the noise path from the fan outlet to the smoke suction opening of the range hood, respectively, with arrows representing noise sound waves. It can be seen that the cross-sectional area of the frame cavity a is larger than that of the handpiece cavity C, a transition cavity B which gradually transitions exists between the frame cavity a and the handpiece cavity C, and the transition cavity B is in a downward closing shape, namely the cross-sectional area gradually decreases from top to bottom. The noise sound wave at the front air port of the fan component 4 mainly flows downwards and outwards through the rack cavity A, the transition cavity B, the machine head cavity C and the smoking port 31 of the cigarette machine in sequence.

As shown in fig. 6, a large amount of noise vortices 10 are easily generated in the front lower part of the rack cavity a, especially in the transition cavity B, and reverberation is generated, so that noise is increased, and a bad use experience is brought to a user. However, part of the noise forms the noise vortex 10, part of the noise is transmitted to two sides of the frame, and most of the noise is transmitted to the smoke suction port 31 of the cigarette making machine and is output outwards.

In view of this, the range hood of the present invention is additionally provided with the noise reduction assembly, and is at least disposed in the head cavity C, as shown in fig. 7 to 9, so as to reduce the external output of noise.

Because the nose cavity C is flat, the left width and the right width are large, and the thickness is small, the noise sound wave flowing out of the transition cavity B is diffused in the nose cavity C. The noise reduction assembly can have various structural shapes, but is arranged in the nose cavity C to easily form wind resistance, so that the smoking machine suction efficiency is reduced, and the noise reduction assembly of the embodiment adopts the form of the sound absorption cotton assembly 9 which has high cost performance and is easy to replace.

Referring to fig. 7 to 9, the noise reduction assembly includes a plurality of vertically extending sound-absorbing cotton assemblies 9, and the plurality of sound-absorbing cotton assemblies 9 are sequentially arranged at intervals in the transverse direction in the nose cavity C. Wherein, inhale cotton subassembly 9 vertical distribution of sound, along flue gas flow direction promptly, physical windage that the cotton subassembly 9 of sound of minimizing brought is inhaled. Furthermore, through along horizontal interval distribution, the cotton subassembly 9 of accessible a plurality of sound absorption is cut apart the great aircraft nose chamber C of width about, and the noise of cutting apart the small region absorbs better, is difficult to produce the reverberation, reduces the reverberation and exports outward.

In order to obtain better sound absorption effect, the sound absorption cotton assembly 9 should be provided with sound absorption cotton material on each lateral side. Also for installation, there is a need to have a sound absorbing cotton mounting bracket. Therefore, in the embodiment of fig. 9 and 10, the sound-absorbing cotton assembly 9 includes the lateral sound-absorbing cotton 91 and the middle mounting bracket 92 in a vertical plate shape, and the lateral sound-absorbing cotton 91 is attached to at least one side wall of the middle mounting bracket 92. In this embodiment, the middle mounting bracket 92 is sandwiched between the side sound absorbing materials 91 on both sides.

Referring to fig. 8, in the mounting and fixing, the middle mounting bracket 92 may be mounted on the head

rear side walls

33, 33 of the head 3, and the lateral sound-absorbing cotton 91 extends from the head rear side wall 33 to the head front side wall 32, thereby reducing noise reverberation in the head cavity C divided into small regions.

More specifically, the sound-absorbing cotton assembly 9 may be disposed in the vertically middle of the head chamber C, as shown in fig. 9, which also conforms to the path characteristics of the transmission of the noise sound waves. In other words, the height of the acoustic wool assembly 9 need not cover the entire head chamber C, but only needs to be centered and extend vertically up and down.

In the handpiece cavity C in fig. 8 and 9, 3 sound-absorbing cotton assemblies 9 are used, but the present invention is not limited thereto, and 4 or more sound-absorbing cotton assemblies may be used, or less than 3 sound-absorbing cotton assemblies may be used. In addition, the plurality of sound-absorbing cotton assemblies 9 can be respectively installed, or can be integrally assembled outside and then uniformly embedded in the machine head cavity C, so that the assembling efficiency is improved.

In addition, the noise reduction assembly may be in other configurations or include noise reducing structures and materials disposed elsewhere within the body. For example, a noise reflection plate may be disposed in the transition chamber B to reflect noise back to the housing chamber a, so that the generation of noise vortices 10 in the transition chamber B may be avoided, and the reflected noise sound waves may be repeatedly collided and lost in the housing chamber a to attenuate the noise.

After the noise reduction material is arranged in the machine head cavity C, referring to fig. 7 and 8, the frame part 1 and the machine head part 3 are both in a cube shape, the rear ends of the frame part and the machine head part are aligned, the thickness of the frame part 1 is larger than that of the machine head part 3 along the front-back direction of the range hood, namely, the front-back thickness dimension between the front decorative cover 12 and the machine frame back panel 11 is larger than the front-back thickness dimension between the machine head front side wall 32 and the machine head back side wall 33, and the novel wall-suction type range hood is beneficial to being used in a small.

After the sound absorbing cotton assembly 9 is disposed in the nose cavity C, wind resistance due to physical resistance is inevitable. Therefore, the air inlet flow channel of the smoke machine needs to be further improved, so that the smoke can be more smoothly introduced. Therefore, the utility model provides a put the scheme of cigarette machine to one side. Specifically, the fan assembly 4 of the range hood may be arranged substantially front and back but arranged in an inclined manner, that is, the bottom of the fan assembly 4 is inclined backward relative to the top of the fan, and an included angle a exists between the fan axis OO 'and a horizontal line in the front-back direction, as shown in fig. 6, a forward and downward forward-moving angle a is formed between the fan axis OO' and a top plate of the rack portion 1. The downward rake angle a is generally not greater than 60 °, and may be about 15 ° in the present embodiment. By arranging the fan obliquely, the air inlet channel of the smoke machine can be optimized, the narrow part of the channel is widened, and the wind resistance brought by the bottom end of the front wind port end 41 of the fan assembly 4 is reduced.

When the fan is installed, referring to fig. 4, the top of the fan assembly 4 is connected to the frame, the left volute bracket 411 and the right volute bracket 412 are respectively disposed on two sides of the front air inlet end 41, the rear volute bracket 421 is disposed at the bottom of the rear air inlet end 42, the left volute bracket 411 and the right volute bracket 412 are correspondingly connected to the frame left coaming 13 and the frame right coaming 14, and the rear volute bracket 421 is connected to the frame rear coaming 11. The fan assembly 4 may include a top volute outlet 43, and the volute outlet 43 is connected to the top frame plate 15 of the frame part 1 by a top flange. The top flange face of the volute outlet 43 should be maintained as a horizontal plane to abut against and connect the check valve 6 to the frame top plate 15 despite the fan being tilted.

In order to further realize smooth air intake or meet the air intake requirement of the bidirectional fan, the head front side wall 32 at the top of the head part 3 may be formed with a head side wall opening 321 with a forward opening, and the head top wall 34 of the head part 3 may be provided with a head top wall opening 341 with an upward opening, so as to enhance the direct communication between the head cavity C and the rack cavity a. The head top wall opening 341 and the head side wall opening 321 may integrally communicate.

The range hood further comprises a transition connection assembly 2, wherein the transition connection assembly 2 comprises an inclined cover 21 with a rear end covering the opening 321 of the side wall of the machine head and a front end extending towards the front part of the bottom end of the machine frame part 1, and a connection surrounding frame 22 connected with the bottom edge of the machine frame part 1 and connected with the top part of the machine head part 3 around the opening 341 of the top wall of the machine head. A transition chamber B is formed in the bevel cover 21. The path of the working noise is that the working noise flows from the front air inlet end 41 to the transition cavity B of the transition connecting component 2, and enters the machine head cavity C through the machine head side wall opening 321 and the machine head top wall opening 341 respectively, and finally, after the noise energy is reduced through the sound absorption cotton component 9 in the machine head cavity C, the rest small part is output from the smoke absorption port 31 of the cigarette machine. Wherein, the cigarette machine smoking mouth 31 is formed at the bottom of the nose portion 3 and is opened downwards forwards and obliquely so as to be close to a cigarette source and obtain better smoking effect, the cigarette machine smoking mouth 31 can be provided with a filter screen 7, and the bottom of the cigarette machine smoking mouth is provided with an oil cup 8.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. In the technical idea scope of the present invention, it is possible to provide the technical solution of the present invention with a plurality of simple modifications, including combining each specific technical feature in any suitable manner, and in order to avoid unnecessary repetition, the present invention does not provide additional description for various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "radial", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Although embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A range hood, characterized in that, range hood includes:

the fan assembly comprises a frame part (1), wherein a fan assembly (4) is installed in a frame cavity (A) of the frame part (1); and

a nose part (3) extending downward from the rear of the bottom end surface of the frame part (1);

wherein a nose front side wall (32) of the nose portion (3) is provided rearward with respect to a front panel of the frame portion (1).

2. The range hood according to claim 1, wherein the machine head rear side wall (33) of the machine head part (3) is aligned with the machine frame rear coaming (11) of the machine frame part (1) up and down, and the bottom of the machine head part (3) is formed with a machine smoke suction port (31) which is inclined forward and is opened downwards.

3. A range hood according to claim 1, characterized in that it comprises a noise reduction assembly arranged at least in the nose cavity (C) of the nose part (3).

4. The range hood according to claim 3, wherein the noise reduction assembly comprises a plurality of vertically extending sound absorption cotton assemblies (9), and the sound absorption cotton assemblies (9) are arranged in the machine head cavity (C) at intervals along the transverse direction.

5. The range hood according to claim 4, wherein the sound absorption cotton assembly (9) comprises lateral sound absorption cotton (91) and a vertical plate-shaped middle mounting bracket (92), and the lateral sound absorption cotton (91) is attached to at least one side wall of the middle mounting bracket (92).

6. The range hood according to claim 5, wherein the middle mounting bracket (92) is mounted on a nose rear sidewall (33) of the nose section (3), and the lateral sound absorbing cotton (91) extends from the nose rear sidewall (33) to the nose front sidewall (32).

7. The extractor hood according to claim 4, characterized in that the sound-absorbing cotton assembly (9) is arranged in the vertical middle of the nose cavity (C).

8. The range hood according to claim 1, comprising a transition connection assembly (2) connected between the machine head portion (3) and the machine frame portion (1), wherein a machine head side wall opening (321) with a forward opening is formed at the top of the machine head front side wall (32), the transition connection assembly (2) comprises an inclined cover (21) with a rear end covering the machine head side wall opening (321) and a front end extending towards the front portion of the bottom end of the machine frame portion (1), and a transition cavity (B) communicating the machine frame cavity (a) and the machine head cavity (C) is formed in the inclined cover (21).

9. The range hood according to claim 8, wherein the top wall of the machine head part (3) is provided with a machine head top wall opening (341) which is opened upwards, and the machine head top wall opening (341) is communicated with the machine head cavity (C) and the rear part of the machine frame cavity (A).

10. The range hood according to any one of claims 1 to 9, wherein the fan assembly (4) is disposed in the housing cavity (a) in an inclined manner in a front-rear direction, and a fan axis (OO') passing through a front air inlet end (41) of the fan assembly (4) extends forward and obliquely downward.