CN217178645U - Low-noise range hood - Google Patents

Abstract

The utility model relates to a low noise lampblack absorber installs the fan spiral case in the mainframe box, and the fan spiral case has first air intake and second air intake, has the collection cigarette passageway that communicates with the mainframe box in the collection petticoat pipe, installs the first sound subassembly of inhaling on the wallboard of the mainframe box that corresponds first air intake at least, installs the second on the mainframe box wallboard that corresponds the second air intake and inhales the sound subassembly, and the first sound subassembly of inhaling is installed in the bottom of the mainframe box of being connected with collection cigarette passageway exit end, and the sound unit mount is inhaled to the second the apex angle department that the roof and the curb plate of mainframe box are connected. The utility model discloses an easily produce the specific position of air current vortex in mainframe box and collection cigarette passageway and make pointed references to install and inhale the sound subassembly, not only can the effective absorption because the noise of the various frequency channels that the air vortex produced, still do benefit to the noise that the absorption produced because the mainframe box vibration during the fan operation, and then reduced the noise of lampblack absorber by a wide margin, can not exert an influence to the amount of wind of lampblack absorber simultaneously, guarantee the oil absorption cigarette effect.

Description

Low-noise range hood

Technical Field

The utility model belongs to the technical field of kitchen appliance, specifically speaking relates to a lampblack absorber, especially relates to a low noise lampblack absorber.

Background

In the existing kitchen equipment, a range hood (or called range hood) becomes necessary equipment for most household kitchens, and the range hood can discharge oil smoke in a kitchen environment in time and keep the kitchen environment and even the air of the whole indoor environment clean by working. At present, the range hood mainly comprises a top suction type range hood and a side suction type range hood, the range hood mainly comprises a smoke collecting hood and a mainframe box positioned above the smoke collecting hood, an air duct communicated with the outside and the inside of the smoke collecting hood respectively is arranged in the mainframe box, a fan system is arranged in the air duct, and the fan system comprises a fan, a fan volute, a motor and the like. The oil smoke generated in the cooking process is collected in the smoke collecting hood under the power action of the fan system, passes through the air inlet communicated with the smoke collecting hood and is exhausted outdoors through the air duct.

The range hood usually generates noise when in work, the noise is about 70dB (A), and the use experience effect of a user is seriously influenced. The root of the noise generated by the range hood comes from the fan system, and the noise of the fan system is mainly the noise generated by the vibration of the fan. The noise reduction technology of the existing range hood mainly adopts sound absorption materials such as sound absorption cotton to reduce the noise decibel generated when the range hood works.

The existing range hood is generally provided with sound absorbing materials such as sound absorbing cotton and the like on the inner surfaces of front and rear side plates of a main case, and mainly absorbs noise around the inner side of the main case so as to achieve the purpose of noise reduction and ensure that the air volume cannot be reduced. In fact, however, the sound-absorbing cotton placed on the front and rear side plates inside the main cabinet cannot greatly reduce the noise decibel, and the market demands for low-noise range hoods are difficult to meet.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides a low noise lampblack absorber that can effectively promote noise reduction.

In order to achieve the above purpose, the technical scheme of the utility model is that:

the utility model provides a low noise lampblack absorber, includes collection petticoat pipe and mainframe box install the fan spiral case in the mainframe box, the fan spiral case has first air intake and second air intake, have in the collection petticoat pipe with the collection cigarette passageway of mainframe box intercommunication, at least corresponding install the first sound subassembly of inhaling on the wallboard of the mainframe box of first air intake corresponding the second air intake install the second on the mainframe box wallboard and inhale the sound subassembly, first sound subassembly install with the bottom of the mainframe box that collection cigarette passageway exit end is connected, the sound unit mount is inhaled to the second the apex angle department that the roof and the curb plate of mainframe box are connected.

Further, the first sound absorption assembly is mounted on side plates on the left side and the right side of the bottom of the main case.

Further, the second is inhaled the longitudinal section of sound subassembly and is triangle-shaped, by the roof to curb plate direction slope setting, the width that the sound subassembly was inhaled to the second reduces gradually from top to bottom.

Furthermore, the longitudinal section of the second sound-absorbing component is an isosceles triangle.

Further, the sound subassembly is inhaled to the second follows the width direction full length of mainframe box sets up.

Furthermore, a third sound-absorbing assembly is arranged on a smoke collecting cover wall plate which encloses the smoke collecting channel.

Further, the third sound absorbing component is installed on the side plates on the left side and the right side of the smoke collecting channel and is obliquely arranged from top to bottom.

Further, the first sound subassembly of inhaling is inhaled the one-to-one correspondence setting of sound subassembly with the third, the first bottom and the third of inhaling the sound subassembly are inhaled the top of sound subassembly and are connected.

Further, inhale the sound subassembly and include the safety cover, keep off the oilpaper and inhale the sound cotton it has a plurality of sound through hole to open on the safety cover, the safety cover has the turn-ups, and the turn-ups passes through the fastener to be fixed on the wallboard of mainframe box or collection petticoat pipe, enclose into accommodation space between safety cover and the wallboard the accommodation space intussuseption is filled and is inhaled the sound cotton, keep off the oilpaper and install the safety cover and inhale between the sound cotton.

Further, keep off the oilpaper and paste and fix on inhaling the sound cotton, inhale sound cotton and pass through screw fixed connection with the safety cover.

To sum up, the utility model provides a low noise lampblack absorber compares with prior art, has following advantage:

(1) the utility model discloses an easily produce the specific position of air current vortex in mainframe box and collection cigarette passageway (including mainframe box and collection cigarette access connection's bottom, the apex angle position of mainframe box, the both sides of collection cigarette passageway) and pointedly install and inhale the sound subassembly, not only can the effective absorption because the noise of the various frequency channels that the air vortex produced, still do benefit to the noise that absorbs because the mainframe box vibration produced when the fan operates, and then reduced the noise of lampblack absorber by a wide margin, can not exert an influence to the amount of wind of lampblack absorber simultaneously, guarantee to inhale the oil smoke effect.

(2) The utility model discloses the sound subassembly section is inhaled to the second of installing in host computer case apex angle department and is triangle-shaped, is set up by the roof to curb plate slope, can be so that the oil smoke passageway bore between the air intake of curb plate and fan spiral case diminishes gradually from bottom to top, is favorable to accelerating the air current and rises to in the air intake that the guide air current more smoothly got into the fan spiral case.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIG. 1 is a sectional view of the range hood of the present invention (the front cover plate is opened);

FIG. 2 is a side structure view of the range hood of the present invention (with a side plate removed);

FIG. 3 is a schematic structural view of the sound-absorbing cotton of the present invention;

figure 4 is the utility model discloses inhale cotton safety cover structure schematic diagram of sound.

As shown in fig. 1 to 4, the smoke collecting cover 1, the main cabinet 2, the top plate 21, the left and right side plates 22, the front side plate 23, the rear side plate 24, the fan volute 3, the exhaust duct 4, the first air inlet 5, the second air inlet 6, the smoke inlet 7, the filter screen 8, the smoke collecting channel 9, the first sound absorbing assembly 10, the second sound absorbing assembly 11, the third sound absorbing assembly 12, the protective cover 13, the oil blocking paper 14, the sound absorbing cotton 15, the sound transmitting hole 16, the turned-over edge 17, and the front cover plate 18.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept by those skilled in the art with reference to specific embodiments.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments, and the following embodiments are used for illustrating the present invention, but do not limit the scope of the present invention.

The first embodiment is as follows:

as shown in fig. 1 and fig. 2, the low-noise range hood provided in this embodiment is a side-suction range hood, and includes a smoke collecting hood 1 and a main cabinet 2, and the main cabinet 2 is installed above the smoke collecting hood 1.

The mainframe box 2 comprises a top plate 21 and side plates, wherein the side plates comprise a left side plate 22, a right side plate 23, a front side plate 23 and a rear side plate 24, and the front side plate 23 is a detachable maintenance cover plate. A fan volute 3 is installed in the main case 2, a discharge flue 4 is installed above a top plate 21 of the main case 3, the fan volute 3 is provided with a first air inlet 5 and a second air inlet 6, and an air outlet (not shown in the figure) of the fan volute 3 is communicated with the discharge flue 4.

The smoke collecting hood 1 is provided with a part extending downwards from the rear part, a smoke inlet 7 of the smoke collecting hood 1 is arranged on the lower half part of the extending part, a filter screen 8 is arranged outside the smoke inlet 7, a front hood plate 18 can be arranged outside the smoke inlet 7 of the extending part, the front hood plate 18 is opened to leak the smoke inlet 7 behind when the range hood is used, and the front hood plate 18 is closed when the range hood is not used. The smoke inlet 7 extends in the left-right direction of the extending part, so that the smoke inlet 7 is in a strip shape. The inside collection cigarette passageway 9 that communicates with mainframe box 2 that has of collection petticoat pipe 1, the entry end and the inlet flue 7 intercommunication of collection cigarette passageway 9, the exit end and the mainframe box 2 intercommunication of collection cigarette passageway 9, collection cigarette passageway 9 draws in gradually to the exit end by the entry end, collection cigarette passageway 9 narrows down by lower to upper gradually promptly, the sectional area of collection cigarette passageway 9 reduces by lower to upper gradually, make the oil smoke when gathering cigarette passageway 9, the velocity of flow constantly accelerates, not only make the oil smoke can be smooth and easy flow in mainframe box 2, still be favorable to constantly increasing with the collision of oil smoke granule, improve the grease separation degree, and then improve oil extraction effect. Meanwhile, the oil smoke passes through the smoke collection channel 9 quickly, and oil pollution in the smoke collection channel 9 is reduced.

In this embodiment, the blower volute 3 is disposed in the main chassis 2 in an inclined manner, the first air inlet 5 of the blower volute 3 faces the rear side plate 24 of the main chassis 1 and is disposed above the outlet end of the smoke collection channel 9, and the second air inlet 6 of the blower volute 3 faces the front side plate 23 of the main chassis 2.

Under the action of the fan system, oil smoke enters the smoke collecting channel 9 from the smoke inlet 7, then enters the mainframe box 2 from the outlet end of the smoke collecting channel 9, enters the fan volute 3 from the first air inlet 5 and the second air inlet 6 of the fan volute 3, and finally is discharged to the outside from the discharge flue 4 at the top.

Through the analysis to the fluid simulation result in the lampblack absorber, the air forms the air vortex at the inside partly specific position of collection petticoat pipe 1 inboard of lampblack absorber mainframe box 2, like the position of being connected at collection petticoat pipe 1 and mainframe box 2 at the lampblack absorber to and the apex angle position at 2 tops of mainframe box, the air flow state changes, the air current can take place unordered collision with the wallboard of collection petticoat pipe 1 and the wallboard of mainframe box 2, the vortex produces, and then produces the noise of great decibel. In addition, when the fan system is operated, noise is also generated due to vibration of the main cabinet 2, and the noise is also radiated outward through the smoke collection passage 9.

In this embodiment, as for the simulation result, it is preferable that the first sound absorbing member 10 is mounted on the wall plate of the main chassis 2 corresponding to the first air inlet 5, the second sound absorbing member 11 is mounted on the wall plate of the main chassis 2 corresponding to the second air inlet 6, the first sound absorbing member 10 is mounted at the bottom of the main chassis 2 connected to the outlet end of the smoke collecting duct 9, and the second sound absorbing member 11 is mounted at the vertex angle of the top plate 21 of the main chassis 2 connected to the front side plate 23. Meanwhile, a third sound-absorbing assembly 12 is installed on a wall plate of the smoke collecting cover 1 which encloses the smoke collecting passage 9. Through the setting of three groups of sound absorption components, to the noise that produces because the air vortex and the 2 vibrations of mainframe box produced, have better sound absorption effect to reduce the noise of lampblack absorber.

In the present embodiment, it is preferable that the first sound-absorbing assembly 10 is installed on left and right side plates 22 at left and right sides of the bottom of the main cabinet 2 connected to the smoke-collecting hood 1. The first sound absorbing member 10 may be provided along the entire thickness direction of the main body casing 2, and more preferably, is provided only in the rear half of the main body casing 2 at a position corresponding to the outlet end of the smoke collecting passage 9. Of course, the first sound absorbing member 10 may be additionally installed at the bottom of the rear side plate 24 of the main cabinet 2, and the first sound absorbing member 10 installed at the rear side plate 24 may be installed along the entire width direction of the main cabinet 2, or may be installed in one to three pieces.

The longitudinal section of the second sound-absorbing assembly 11 is triangular and is obliquely arranged towards the front side plate 23 by the top plate 21, and the width of the second sound-absorbing assembly 11 is gradually reduced from top to bottom. Because the fan volute 3 is obliquely arranged in the main case 2, more preferably, the second sound-absorbing component 11 adopts a structure with an isosceles triangle-shaped longitudinal section. The second sound-absorbing assembly 11 is of a triangular structure, so that the aperture of the oil smoke passage between the front side plate 23 and the second air inlet 6 of the fan volute 3 is gradually reduced from bottom to top, which is beneficial to accelerating the rising of the air flow and guiding the air flow to enter the second air inlet 6 of the fan volute 3 more smoothly. To ensure the sound absorption effect without affecting the air volume, the second sound absorption member 11 is preferably disposed along the width direction of the main cabinet 2.

The third sound-absorbing assembly 12 is installed on the side plates of the smoke collecting cover 1 on both sides of the smoke collecting channel 9 and is arranged obliquely from top to bottom. Since the air flow state is changed at the position where the collection hood 1 and the main cabinet 2 are connected to generate the vortex, it is more preferable that the first sound-absorbing assembly 10 and the third sound-absorbing assembly 12 are arranged in one-to-one correspondence, and the bottom of the first sound-absorbing assembly 10 is connected to the top of the third sound-absorbing assembly 11, that is, adjacent to the connection of the main cabinet 2 and the collection hood 1, the sound-absorbing assemblies are continuously installed at both sides of the path of the air flow, respectively, to increase the sound-absorbing effect of the connection.

As shown in fig. 3 and 4, the first sound absorbing unit 10, the second sound absorbing unit 11, and the third sound absorbing unit 12 have the same structure, but have different shapes according to the installation position.

The sound absorption component comprises a protective cover 13, oil blocking paper 14 and sound absorption cotton 15, the protective cover 13 consists of a middle main body and a peripheral flanging 17, and a plurality of sound transmission holes 16 are formed in the main body of the protective cover 13. Sound can enter the protective cover 13 through the sound transmission hole 16 on the protective cover 13, the sound is rubbed back and forth in the sound transmission hole 16, so that sound energy is effectively consumed, the range hood is further denoised, and the sound transmission hole 16 cannot influence the air flowing through the protective cover 13. The protective cover 13 is made of a metal plate which is bent integrally, and a stainless steel plate or an aluminum alloy plate may be used. The flange 17 is provided with a mounting hole (not shown) and is fixed to the wall of the main cabinet 2 or the smoke collecting cover 1 by a fastener (not shown) such as a screw. After the installation, because turn-ups 17 has certain height, enclose into accommodation space between protecting cover 13 and wallboard, pack in accommodation space and inhale sound cotton 15, with preferably filling in accommodation space and inhale sound cotton 15. Oil blocking paper 14 is installed at safety cover 13 and inhales between sound cotton 15, and oil blocking paper 14 is fixed on inhaling sound cotton 15 through the adhesive sticker, and oil that oil blocking paper 14 can effectively prevent in the flue gas is inhaled sound cotton 15 and is absorbed, can promote sound absorption effect, is favorable to promoting simultaneously and inhales the life of sound cotton 15, reduces use cost. Inhale cotton 15 of sound and pass through screw fixed connection with safety cover 13, safety cover 13 when playing certain guard action, also has certain limiting displacement to the cotton 15 of inhaling of filling, prevents to inhale the cotton 15 of sound and appear the shape deformation under the power effect of fan, leads to inhaling the sound effect and descends.

The sound absorption cotton 15 can effectively absorb noise of various frequencies generated by a range hood, the sound absorption cotton 15 is made of common sound absorption materials such as melamine foam or polyurethane foam, the outer surface of the sound absorption cotton 15 can be in a plane form, a groove form or a pyramid-shaped structure, and the sound absorption cotton is required to have excellent sound absorption, flame retardance, heat insulation, humidity and heat resistance stability, and is environment-friendly and pollution-free. The sound absorbing cotton 15 may be fixed by gluing, preferably by screws in this embodiment, and the sound absorbing cotton 15 is fixed to the protective cover 13 by screws. Due to the special use environment of the range hood, after the range hood is used for a long time, greasy dirt exists on the surface of the protective cover 13, the layer of the oil blocking paper 14 is arranged between the protective cover 13 and the sound absorbing cotton 15, the sound absorbing cotton 15 can be prevented from being polluted by the greasy dirt, the sound absorbing effect is kept good for a long time, and meanwhile, the oil blocking paper 14 is easy to process and convenient to install and is beneficial to reducing the material cost and the manufacturing cost.

According to the installation position of the sound absorption assembly, in the embodiment, as shown in fig. 3 and 4, the protection cover 13 of the first sound absorption assembly 10 is square, and is composed of a middle square main body and four flanges 17, a square accommodation space is formed between the protection cover 13 and the wall plates of the main case 2 and the sound absorption cover 1 after installation, and the sound absorption cotton 15 is filled in the square accommodation space.

The safety cover 13 of the second sound-absorbing assembly 11 is strip-shaped, is obliquely arranged at the vertex angle of the main case 2, and is fixedly connected with the top plate 21 and the front side plate 23 of the main case 2 through fasteners such as screws, the safety cover 13, the top plate 21 and the front side plate 23 form a space with a triangular longitudinal section at the vertex angle, and the sound-absorbing cotton 15 is filled in the space, namely the longitudinal section of the sound-absorbing cotton 15 after being filled is triangular.

The protective cover 13 of the third sound-absorbing assembly 12 is strip-shaped and is obliquely placed on the side plates on the left side and the right side of the smoke collection channel 9, and the protective cover 13 extends from the outlet end of the smoke collection channel 9 to the upper edge of the strip-shaped smoke inlet 7 in a downward inclined mode. The protective cover 13 in the third sound-absorbing assembly 12 is composed of a middle strip-shaped main body, flanges at two sides and at the bottom, the top of the protective cover 13 can be open, the flanges at the top can also be arranged, and the top of the protective cover 13 is connected with the protective cover 13 in the first sound-absorbing assembly 10 above the protective cover 13.

This lampblack absorber is through the specific position (including the bottom left and right sides that mainframe box 2 and collection cigarette passageway 9 are connected, the apex angle position of mainframe box 2, the left and right sides of collection cigarette passageway 9) that easily produces the air current vortex in mainframe box and collection cigarette passageway pertinence installation sound subassembly of inhaling, not only can effectively absorb the noise of the various frequency channels that produce because the air vortex, still be favorable to absorbing the noise that produces because the mainframe box vibration when the fan operates, and then reduced the noise of lampblack absorber by a wide margin, can not exert an influence to the amount of wind of lampblack absorber simultaneously, guarantee the oil absorption cigarette effect.

Example two:

the structure of making an uproar is applicable to the ceiling-mounted range hood simultaneously to the structure of making an uproar, and the range hood in this embodiment is the ceiling-mounted range hood, and collection petticoat pipe 1 is a dull and stereotyped structure, and the smoke inlet sets up on the lower surface of collection petticoat pipe, has the collection cigarette passageway above the smoke inlet.

The first air inlet is a front air inlet, the first sound-absorbing component 10 is arranged at the bottom of the side plates on the two sides of the mainframe box, the second sound-absorbing component is arranged at the second air inlet, namely the rear air inlet, and the second sound-absorbing component is arranged at the rear top corner of the top plate and the rear cover plate.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and although the present invention has been disclosed with reference to the above preferred embodiment, but not to limit the present invention, any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the scope of the present invention, and any simple modification, equivalent change and modification made to the above embodiments by the technical spirit of the present invention still fall within the scope of the present invention.

Claims (10)

1. The utility model provides a low noise lampblack absorber, includes collection petticoat pipe and mainframe box install the fan spiral case in the mainframe box, the fan spiral case has first air intake and second air intake, have the collection cigarette passageway that communicates with the mainframe box in the collection petticoat pipe, its characterized in that: at least corresponding install the first sound subassembly of inhaling on the wallboard of the mainframe box of first air intake, corresponding the second air intake install the second on the mainframe box wallboard and inhale the sound subassembly, first sound subassembly of inhaling install with the bottom of the mainframe box that collection cigarette passageway exit end is connected, the sound subassembly is installed to the second the apex angle department that the roof and the curb plate of mainframe box are connected.

2. A low noise range hood according to claim 1, wherein: the first sound absorption assembly is arranged on the side plates on the left side and the right side of the bottom of the main case.

3. A low noise range hood according to claim 1, wherein: the second inhales the vertical section of sound subassembly and is triangle-shaped, is set up to the curb plate direction slope by the roof, the width that the sound subassembly was inhaled to the second reduces gradually from top to bottom.

4. A low noise range hood according to claim 3, wherein: the longitudinal section of the second sound-absorbing component is an isosceles triangle.

5. A low noise range hood according to claim 3, wherein: the second inhales the sound subassembly and follows the width direction of mainframe box leads to long the setting.

6. A low noise range hood according to claim 1, wherein: and a third sound-absorbing assembly is arranged on a smoke collecting cover wall plate which encloses the smoke collecting channel.

7. A low noise range hood according to claim 6, wherein: the third is inhaled the sound subassembly and is installed on the curb plate of collection cigarette passageway left and right sides, from top to bottom slope setting.

8. A low noise range hood according to claim 6, wherein: the first sound subassembly of inhaling is inhaled the one-to-one correspondence setting of sound subassembly with the third, the bottom of the first sound subassembly of inhaling is connected with the top of sound subassembly of third.

9. A low noise range hood according to any one of claims 1 to 8, wherein: inhale the sound subassembly and include the safety cover, keep off the oilpaper and inhale the sound cotton it has a plurality of sound transmission hole to open on the safety cover, the safety cover has the turn-ups, and the turn-ups passes through the fastener to be fixed on the wallboard of mainframe box or collection petticoat pipe, enclose into accommodation space between safety cover and the wallboard the accommodation space intussuseption is filled and is inhaled the sound cotton, keep off the oilpaper and install the safety cover and inhale between the sound cotton.

10. A low noise range hood according to claim 9, wherein: the oil blocking paper is fixed on the sound absorbing cotton in a sticking mode, and the sound absorbing cotton is fixedly connected with the protective cover through screws.

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