CN211650366U - Low-noise range hood - Google Patents
Low-noise range hood Download PDFInfo
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- CN211650366U CN211650366U CN201921244786.6U CN201921244786U CN211650366U CN 211650366 U CN211650366 U CN 211650366U CN 201921244786 U CN201921244786 U CN 201921244786U CN 211650366 U CN211650366 U CN 211650366U
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- sound
- range hood
- uproar
- inhale
- making
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- 238000010521 absorption reaction Methods 0.000 claims abstract description 22
- 229920000742 Cotton Polymers 0.000 claims description 17
- 239000003063 flame retardant Substances 0.000 claims description 9
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims 1
- 230000009467 reduction Effects 0.000 abstract description 13
- 239000000779 smoke Substances 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 241000272165 Charadriidae Species 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 206010067484 Adverse reaction Diseases 0.000 description 1
- 206010013954 Dysphoria Diseases 0.000 description 1
- 206010019233 Headaches Diseases 0.000 description 1
- 206010033557 Palpitations Diseases 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000006838 adverse reaction Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 231100000869 headache Toxicity 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model discloses a low noise range hood, including the box, be provided with the spiral case in the box, still including inhaling the sound and falling the device of making an uproar and install between volute and the box, inhale the sound and fall the device of making an uproar and form first air vibrations buffer zone with the volute, inhale the sound and fall the device of making an uproar and form second air vibrations buffer zone with the box. The utility model relates to a low noise range hood, owing to will inhale the sound and fall the device of making an uproar and set up between spiral case and box, this space does not participate in the fluid flow basically, avoids increasing the flow resistance. Meanwhile, the oil smoke entering into the space is less, so that the sound absorption characteristic of the sound absorption body can be kept for a long time. On the premise of not influencing the air quantity of the range hood, the internal space of the range hood is fully utilized, the noise reduction of the range hood is realized, and the noise quality of the range hood can be obviously improved.
Description
Technical Field
The utility model relates to a range hood especially relates to a low noise range hood.
Background
In recent years, the domestic cigarette machine market mainly pushes the concepts of large air volume and large suction all the time, and along with the gradual improvement of the air volume, the noise generated by the range hood is also larger and larger. When the range hood is opened during cooking, the voice, the telephone sound, the doorbell sound and the sound of children can not be heard, even the strong noise can cause the adverse reactions of dysphoria, headache, palpitation and the like of housewives and kitchen operators, and the body and mind health can be seriously influenced after the range hood is used for a long time. Therefore, the noise becomes the technical problem to be solved urgently in the existing range hood. Along with the improvement of the requirements of people on the living quality, users pay more and more attention to the noise parameters of the range hood when purchasing the range hood. The quality of the noise performance of the cigarette making machine can be said to be a big key factor of the product competitiveness. The existing range hood has the advantages that the appearance is attractive, the size is basically unchanged, the performance is continuously increased, and the internal space is smaller and smaller. The traditional noise reduction method is to install a sound absorption and noise reduction device at a maintenance plate of an air duct inlet, and the sound absorption and noise reduction device is increasingly difficult to install along with the reduction of an internal space. Even if improperly installed, the noise may increase. Therefore, some manufacturers in the existing design arrange the sound absorbing cotton on the flowing flow channel, but the arrangement can occupy the flowing space, influence the flowing smoothness and increase the flowing resistance.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a low noise range hood, this range hood can show the noise reduction index, improves user experience degree.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a low noise range hood, includes the box, is provided with the spiral case in the box, still includes to inhale the sound and falls the device of making an uproar, inhale the sound and fall the device of making an uproar and install between spiral case and the box, inhale the sound and fall the device of making an uproar and form first air vibrations buffer with the spiral case, inhale the sound and fall the device of making an uproar and form second air vibrations buffer with the box.
Further, inhale the sound and fall the device of making an uproar including inhaling the sound body and netted orifice plate frame, netted orifice plate frame wraps up and covers inhale the sound body, just a plurality of sound holes of inhaling have been seted up on the netted orifice plate frame.
Further, netted orifice plate frame is including a hypoplastron, an upper plate and two sideboard, the hypoplastron with the upper plate is L type structure, upper plate, hypoplastron and two sideboard enclose into the semi-enclosed construction that has L type cavity, inhale the sound body and arrange the cavity in, all be provided with a plurality of sound holes of inhaling on hypoplastron and the upper plate, inhale the correspondence of sound body and set up to the L type.
Further, the aperture of the sound absorption hole is 15-20 mm.
Further, the sound absorption body is sound absorption cotton.
Further, the sound-absorbing cotton is added with a flame retardant.
Furthermore, a flame-retardant film with the thickness of 0.03mm is attached to the surface of the sound-absorbing cotton.
Furthermore, the sound absorption cotton has the density of 15kg/m3 and the thickness of 20-30 mm.
Further, inhale the sound and fall the device of making an uproar and pass through the built on stilts setting of fixed backing sheet on the box, inhale the sound and fall the device of making an uproar and pass through fixed backing sheet prescribes a limit to first air vibrations buffer area and second air vibrations buffer area.
After the technical scheme is adopted, the utility model has the advantages and beneficial effects of:
1. the utility model relates to a low noise range hood, owing to will inhale the sound and fall the device of making an uproar and set up between spiral case and box, this space does not participate in the fluid flow basically, avoids increasing the flow resistance. Meanwhile, the oil smoke entering into the space is less, so that the sound absorption characteristic of the sound absorption body can be kept for a long time. On the premise of not influencing the air quantity of the range hood, the internal space of the range hood is fully utilized, the noise reduction of the range hood is realized, and the noise quality of the range hood can be obviously improved.
2. The utility model relates to a low noise range hood, owing to inhale the sound noise reduction device and adopt medium density to inhale the sound cotton, density 15kg/m3, thickness 20-30mm can absorb the noise of medium-high frequency 700 supple sound 1000Hz frequency.
3. The utility model relates to a low noise range hood, owing to inhale the sound and fall the device of making an uproar and form first air vibrations buffer zone and second air vibrations buffer zone with spiral case and box respectively, consequently sound can freely circulate, and the performance is inhaled the whole surface areas of sound and is fallen the device of making an uproar and go to absorb sound. On the contrary, if the sound absorption material is fully filled, the sound absorption effect is poor.
4. The utility model relates to a low-noise range hood, because the sound-absorbing cotton is added with the fire retardant, the fire-proof safety requirement can be met; as the surface of the sound-absorbing cotton is attached with the flame-retardant film with the thickness of 0.03mm, the oil-proof and water-proof performance can be realized, the oil smoke is prevented from gradually permeating along with the increase of the service time, and the sound-absorbing effect is reduced.
5. The utility model relates to a low noise range hood, owing to inhale the sound and fall the device of making an uproar including inhaling the sound body and netted hole grillage, it is fixed that the sound body passes through netted hole grillage to inhale, consequently, can prevent to inhale and drop or slip after the immersion oil after the sound body is ageing, has seted up a plurality of sound holes of inhaling on the netted hole grillage, and the aperture is 15-20mm, can increase sound absorption surface area, because both sides all are provided with about the netted hole grillage and inhale the sound hole, consequently, upper and lower both sides are all adsorbable, and the sound body is inhaled.
Drawings
FIG. 1 is a schematic view of the overall structure of a low-noise range hood according to the present invention;
FIG. 2 is a schematic view of the structure of the sound-absorbing body;
fig. 3 is a schematic view of the structure of the sound absorbing and noise reducing device.
In the figure: the sound absorption and noise reduction device comprises a box body 1, a volute 2, a sound absorption and noise reduction device 3, a sound absorption body 31, a net-shaped perforated plate frame 4, a sound absorption hole 41, a lower plate 42, an upper plate 43, a side plate 44 and a fixed support sheet 45.
Detailed Description
The invention will be further elucidated with reference to the accompanying drawings:
as shown in fig. 1, the utility model relates to a low noise range hood, including box 1, be provided with spiral case 2 in the box 1, still including inhaling the sound and falling the device 3 of making an uproar, inhale the sound and fall the device 3 of making an uproar and install between spiral case 2 and the box 1, inhale the sound and fall the device 3 of making an uproar and form first air vibrations buffer with spiral case 2, inhale the sound and fall the device of making an uproar and form second air vibrations buffer with box 1.
Inhale the built on stilts setting on box 1 of sound noise reduction device 3 through fixed support piece 45, fixed support piece 45 passes through the screw fixation with the box roof, inhale the sound noise reduction device and pass through fixed support piece 45 prescribes a limit to first air vibrations buffer zone and second air vibrations buffer zone. The first air vibration buffer area and the second air vibration buffer area are favorable for free circulation of sound, and the whole surface area of the sound absorption and noise reduction device is exerted to absorb the sound.
As shown in fig. 3, the sound-absorbing and noise-reducing device 3 includes a sound-absorbing body 31 and a mesh-shaped perforated plate frame 4, the sound-absorbing body 31 is wrapped by the mesh-shaped perforated plate frame 4, and a plurality of sound-absorbing holes 41 are formed in the mesh-shaped perforated plate frame 4. The mesh-hole plate frame 4 plays a role in fixing the sound absorbing body, and prevents the sound absorbing body from falling off after aging or sliding after oil immersion.
Netted orifice grillage 4 is including a hypoplastron 42, an upper plate 43 and two sideboard 44, the hypoplastron with the upper plate is L type structure, upper plate, hypoplastron and two sideboard enclose into the semi-enclosed construction that has L type cavity, inhale the sound body 31 and arrange the cavity in, all be provided with a plurality of sound holes 41 of inhaling on hypoplastron and the upper plate, inhale the aperture of sound hole 41 and be 15-20mm, increase sound absorbing surface area as far as.
As shown in fig. 2, the sound absorber 31 is correspondingly provided in an L shape. The sound absorbing body 31 is made of sound absorbing cotton. The sound-absorbing cotton is added with a flame retardant. The addition amount of the fire retardant can meet the three requirements of self-extinguishing when away from fire, self-extinguishing when away from fire after oil immersion and self-extinguishing when away from fire after oil mist test, and meets the requirement of fire safety. Inhale the cotton surface of sound and be covered with 0.03 mm's fire-retardant film entirely, can grease proofing waterproof, prevent along with the increase of live time, the oil smoke permeates gradually, and sound absorbing effect reduces. The sound-absorbing cotton adopts medium-density sound-absorbing cotton with the density of 15kg/m3 and the thickness of 20-30mm, and mainly absorbs the noise with the frequency of 700-1000Hz at medium-high frequency.
The above-mentioned embodiments are merely preferred examples of the present invention, and do not limit the scope of the present invention, so all equivalent changes or modifications made by the structure, features and principles of the present invention should be included in the claims of the present invention.
Claims (9)
1. The utility model provides a low noise range hood, includes box (1), is provided with spiral case (2) in box (1), its characterized in that: still including inhaling sound and making an uproar device (3) of making an uproar, inhale sound and make an uproar device (3) and install between spiral case (2) and box (1), inhale sound and make an uproar device (3) of making an uproar and form first air vibrations buffer with spiral case (2), inhale sound and make an uproar device of making an uproar and form second air vibrations buffer with box (1).
2. The low noise range hood of claim 1, wherein: inhale sound and fall device (3) including inhaling sound body (31) and netted hole grillage (4), netted hole grillage (4) are wrapped up in and are covered inhale sound body (31), just a plurality of sound holes (41) of inhaling have been seted up on netted hole grillage (4).
3. A low noise range hood as defined in claim 2, wherein: netted pore grillage (4) is including a hypoplastron (42), an upper plate (43) and two sideboard (44), the hypoplastron with the upper plate is L type structure, upper plate, hypoplastron and two sideboard enclose into the semi-closed structure that has L type cavity, inhale the sound body (31) and arrange the cavity in, all be provided with a plurality of sound holes (41) of inhaling on hypoplastron and the upper plate, it sets up to the L type to inhale sound body (31) correspondence.
4. A low noise range hood as defined in claim 2 or 3, wherein: the aperture of the sound absorption hole (41) is 15-20 mm.
5. The low noise range hood of claim 2, wherein: the sound absorption body (31) is made of sound absorption cotton.
6. The low noise range hood of claim 5, wherein: the sound-absorbing cotton is added with a flame retardant.
7. A low noise range hood as defined in claim 5 or 6, wherein: and a 0.03mm flame-retardant film is attached to the surface of the sound-absorbing cotton.
8. The low noise range hood of claim 7, wherein: the sound absorption cotton has the density of 15kg/m3 and the thickness of 20-30 mm.
9. The low noise range hood of claim 1, wherein: inhale sound and fall device of making an uproar (3) and make an uproar and set up on box (1) through fixed support piece (45) are maked somebody a mere figurehead, inhale sound and fall the device of making an uproar and pass through fixed support piece (45) inject first air vibrations buffer zone and second air vibrations buffer zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921244786.6U CN211650366U (en) | 2019-08-02 | 2019-08-02 | Low-noise range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921244786.6U CN211650366U (en) | 2019-08-02 | 2019-08-02 | Low-noise range hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211650366U true CN211650366U (en) | 2020-10-09 |
Family
ID=72682116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921244786.6U Active CN211650366U (en) | 2019-08-02 | 2019-08-02 | Low-noise range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211650366U (en) |
-
2019
- 2019-08-02 CN CN201921244786.6U patent/CN211650366U/en active Active
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