CN210463157U - Inlet smoke gathering and silencing device for range hood - Google Patents
Inlet smoke gathering and silencing device for range hood Download PDFInfo
- Publication number
- CN210463157U CN210463157U CN201921184677.XU CN201921184677U CN210463157U CN 210463157 U CN210463157 U CN 210463157U CN 201921184677 U CN201921184677 U CN 201921184677U CN 210463157 U CN210463157 U CN 210463157U
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- Prior art keywords
- chamber
- wall surface
- shunting
- connecting device
- inner chamber
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- 230000030279 gene silencing Effects 0.000 title claims abstract description 25
- 239000000779 smoke Substances 0.000 title claims description 16
- 239000002131 composite material Substances 0.000 claims abstract description 33
- 230000008676 import Effects 0.000 claims description 4
- 239000011810 insulating material Substances 0.000 claims description 4
- 239000002657 fibrous material Substances 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- 238000000926 separation method Methods 0.000 abstract description 6
- 239000006096 absorbing agent Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 239000006233 lamp black Substances 0.000 abstract description 5
- 239000004519 grease Substances 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 6
- 235000019504 cigarettes Nutrition 0.000 description 3
- 210000005069 ears Anatomy 0.000 description 3
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 239000011358 absorbing material Substances 0.000 description 2
- 238000010411 cooking Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Abstract
An inlet smoke-gathering silencing device for a range hood is characterized in that a connecting device is positioned above a cavity and is of an annular hollow structure, an air inlet is arranged below the connecting device, and an air outlet is arranged above the connecting device; the outer wall surface of the connecting device is provided with external threads; the cavity at the lower end of the connecting device comprises an inner chamber and a plurality of shunting chambers; the inner chamber is separated from the flow dividing chamber by an annular wall surface and is positioned in the wall surface; the inner chamber is of an annular structure, and is provided with an oil collecting ring, an inner chamber inlet, an oil return channel, a composite type silencing plate air inlet and an inner chamber air outlet from bottom to top; the shunting chamber is annularly arranged around the wall surface, and an inlet of the shunting chamber is positioned below the shunting chamber and is connected with an oil collecting ring of the shunting chamber; the outlet of the shunting chamber is connected with the outlet of the inner chamber, and the outlet of the shunting chamber is positioned below the air inlet of the connecting device. The utility model discloses based on hydrodynamics and coanda effect, promote lampblack absorber entry grease separation degree, combine simultaneously to fall the measure of making an uproar, reduce lampblack absorber noise to culinary art personnel's influence.
Description
Technical Field
The utility model belongs to the smoke ventilator field relates to a smoke silencer is held together with import to smoke ventilator.
Background
The range hood is a common household appliance and plays an important role in life of people, and the oil separation degree and the noise of the range hood are important indexes for evaluating the performance of the range hood.
The conventional upward-discharging range hood adopts a filter screen structure, the separation mode is single, and meanwhile, the vertical air intake of the oil smoke is easy to cause mesh blockage; in addition, the long-term use of the range hood easily causes grease to accumulate in the range hood, which affects the smoke exhaust effect and has the risk of causing fire when the range hood is seriously used; in addition, the conventional upper-discharging range hood inlet is not provided with a sound insulation measure, and the working noise can seriously affect the health of cooking personnel because the range hood working platform is close to the ears of a person.
Disclosure of Invention
In order to overcome traditional row's smoke ventilator import and hold together the shortcoming that cigarette effect is poor, air intake structure is single, the noise of admitting air is big, the utility model provides a smoke ventilator is with import hold together cigarette silencing device, based on hydrodynamics and coanda effect, promote lampblack absorber entry grease separation degree, combine simultaneously to fall the measure of making an uproar, reduce lampblack absorber noise to culinary art personnel's influence.
In order to solve the technical problem, the utility model provides a following technical scheme:
an inlet smoke-gathering and silencing device for a range hood comprises a connecting device, an inner chamber and a flow-dividing chamber, wherein the connecting device is positioned above a cavity and is of an annular hollow structure; the outer wall surface of the connecting device is provided with an external thread;
the cavity at the lower end of the connecting device comprises an inner chamber and a plurality of shunting chambers; the inner chamber is separated from the flow dividing chamber by an annular wall surface and is positioned in the wall surface;
the inner chamber is of an annular structure, and is provided with an oil collecting ring, an inner chamber inlet, an oil return channel, a composite type silencing plate air inlet and an inner chamber air outlet from bottom to top;
the composite type silencing plate is circular and is connected with the wall surface of the inner cavity; the round composite type silencing plate is provided with a round air inlet; except the highest composite type acoustical board, the adjacent composite type acoustical boards are staggered with air inlet holes, and the uppermost composite type acoustical board is concentric with the round hole; the oil return channel is positioned in the wall surface of the inner chamber and is connected with the oil collecting ring;
the shunting chamber is annularly arranged around the wall surface, and an inlet of the shunting chamber is positioned below the shunting chamber and is connected with an oil collecting ring of the shunting chamber; the outlet of the shunting chamber is connected with the outlet of the inner chamber, and the outlet of the shunting chamber is positioned below the air inlet of the connecting device.
Further, the composite acoustical panel is composed of small sound-deadening holes and a sound-insulating material, the aperture of each small sound-deadening hole is 2mm, and the sound-insulating material is made of a polyester fiber material. The smoke exhaust ventilator can absorb and diffract noise generated by the smoke exhaust ventilator during working.
And the adjacent shunting chambers are isolated by a guide vane, the guide vane is integrally in an's' shape, the's' curve positioned in a vertical plane projects to the inner wall surface and the outer wall surface of each shunting chamber and is connected with a curved surface formed by adjacent end points, the inclination angle β of the wall surface is set to be smaller than α, the sectional area of a channel of each shunting chamber is reduced along with the flow of gas, and the flow of oil fume is accelerated.
The utility model discloses be equipped with branch stream room collection oil ring 34, interior cavity oil return passage 25 and collection oil ring 26 have oil return, an album oil function.
The beneficial effects of the utility model are embodied in: (1) this device can play and hold together the cigarette effect to promote this device of lampblack absorber grease separation degree (2) with the help of oil smoke gas collision and be equipped with oil return device, and through threaded connection, the quick detachable washing of device, occupation space is little, greatly promotes the culinary art comfort level. (3) The composite silencing plate in the device enables sound waves to be subjected to multiple diffraction and absorption in the transmission process, and can reduce the noise generated by the work of the range hood to enter human ears. (4) The guide vane special for the device can improve the air inlet speed and the oil separation degree;
drawings
Fig. 1 is a cross-sectional view of the present invention;
FIG. 2 is a partial cross-sectional view of the present invention;
FIG. 3 is a top view of the composite acoustical panel of the present invention;
fig. 4 is a sectional view of the composite acoustical panel of the present invention;
fig. 5 is a schematic view of the flow passage of the present invention;
FIG. 6 is a schematic drawing of the dimensions of the present invention;
FIG. 7 is a schematic view of section P of FIG. 6;
FIG. 8 is a schematic view of the present invention
FIG. 9 is an installation schematic of the present invention;
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples, it being understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention, and it is to be further understood that only the parts related to the invention are shown in the drawings for ease of description.
It should be noted that, in case of conflict, the features of the embodiments and examples in the present application can be combined with each other, and the present application will be described in detail with reference to the accompanying drawings and examples.
Referring to fig. 1 to 9, an inlet smoke-collecting and silencing device for a range hood comprises a connecting device 1, an inner chamber 2 and a shunting chamber 3;
the connecting device 1 is positioned above the cavity, the connecting device 1 is of an annular hollow structure, the connecting device 1 comprises an air inlet 12, an air outlet 13, an outer wall surface 14 and external threads 11, the air inlet 12 is arranged below the connecting device 1, and the air outlet 13 is arranged above the connecting device 1; the outer wall surface 14 of the connecting device is provided with an external thread 11; an inner chamber 2 and a plurality of branch chambers 3 are arranged in a cavity at the lower end of the connecting device 1, an oil collecting ring 26, an inner chamber inlet 21, an oil return channel 25, a composite type sound-absorbing plate 23, a composite type sound-absorbing plate air inlet 24 and an inner chamber outlet 22 are arranged in the inner chamber 2 from bottom to top, the composite type sound-absorbing plate 23 is circular and comprises sound-absorbing small holes 231 and sound-absorbing materials 232, and the sound-absorbing small holes 231 are positioned above the sound-absorbing materials 232;
the round composite type silencing plate 23 is provided with a round air inlet 24; except for the first composite type noise elimination plate 23 at the upper end, air inlet holes 24 are staggered on the adjacent composite type noise elimination plates 23, and the first composite type noise elimination plate 23 at the upper end is concentric with the opened circular hole 24; the oil return channel 25 is positioned in the wall surface of the inner chamber 2 and is connected with an oil collecting ring 26;
the shunting chamber comprises from bottom to top: a diverter chamber inlet 31; guide vanes 33; a diverter chamber outlet 32; the shunting chamber 3 is annularly arranged around the wall surface, and an inlet 31 of the shunting chamber is positioned below the shunting chamber and is connected with an oil collecting ring 34 of the shunting chamber; the diversion chamber outlet 32 is connected with the inner chamber outlet 22 and is positioned below the air inlet 12 of the connecting device 1;
the adjacent shunting chambers 3 are separated by a guide vane 33, the guide vane 33 is integrally in an's' shape, specifically, an's' curve positioned in a vertical plane projects to the inner wall surface and the outer wall surface of the shunting chamber and is connected with a curved surface formed by adjacent end points, the inclination angle β of the wall surface is set to be smaller than α, the channel sectional area of the shunting chamber 3 is reduced along with the flow of gas, and the oil return channel 25 is positioned in the inner chamber wall surface and is connected with the oil collecting tank 26 when the flow of oil smoke accelerates.
Referring to fig. 8, the work flow of this embodiment is: the device is matched with a box body of a range hood through threaded connection, the range hood (1) is opened, oil smoke enters the device from the bottom of the device, part of gas flows into an air inlet area A, the area A comprises a plurality of shunting chambers 3, and the other part of gas enters an area B from an inlet at the bottom of an inner chamber 2; (2) the air current in each shunting chamber 3 flows and accelerates along with the reduction of the cross section of the flow channel of the shunting chamber 3, the air current flowing out of the outlet 32 of each shunting chamber keeps radial motion due to inertia, and collides at the center of the cross section of the area C of the outlet, and depends on the oil drops of the air, the oil drops collide with the air current flowing in the inner chamber 2 of the shunting chamber 3 and rise upwards in an's' shape around the air outlet 24 on the composite silencing plate 23, the oil drops and the oil drops which depend on the air can be separated and thrown out due to the inertia, the axial ascending air current collides with the radial air current flowing out of each shunting chamber 3 in the area C above the outlet 22 of the inner chamber, and the oil gas is further separated (4) and the axial air current flows through the inner cavity of the connecting device 1 and is; (5) noise generated by the work of the range hood is absorbed and reflected by the composite type sound-absorbing plate 23, and noise entering human ears is greatly reduced.
The diameter D of the inlet end at the bottom is defined as the positive direction from bottom to top and the negative direction from bottom to top1The diameter D of the outlet end of the device is set along the positive direction (250-300 mm)5＝D1-50 mm. The height H of the section 3a of the shunting chamber1200mm, an inclination angle β of 55-60 degrees, and a height H of a section 3b of the shunting chamber2The section line arc radius R1 is 60mm, the central angle is 40-50 degrees, the whole flow channel formed by two guide vanes 33 is S-shaped, the inclination angle β of the outer wall surface of the shunting chamber is smaller than the inclination angle α of the wall surface of the inner chamber, the section area of the flow channel of the 3a section of the shunting chamber is gradually reduced from bottom to top, the guide vanes 33 are a specific S-shaped curve which is positioned in a vertical plane and projects to the inner wall surface and the outer wall surface of the shunting chamber to connect curved surfaces formed by adjacent end points, the axial direction is a y axis, the radial direction is an x axis, and the S-shaped curve formula is obtained:
Y＝(0<x<20mm)
the oil collecting ring 34 is positioned at the bottom of the flow distribution chamber 3;
the direction from bottom to top is defined as positive, and vice versa as negative. The diameter D of the air inlet end 21 of the inner chamber2The diameter D of the inlet end outlet 22 is set along the positive direction (130-200 mm)4＝D2-50 mm; the height H of the inner chamber wall surface1200mm, the inclination angle α of the composite silencing plate is 65-70 degrees, a plurality of layers of circular composite silencing plates 23 are arranged in the inner chamber 2, the composite silencing plates 23 are circular, air inlet holes 24 with the diameter of 40mm are formed in the composite silencing plates 23 in a staggered mode, and the distance s between the composite silencing plates 23 is1The range hood is 20-25 mm, noise generated by the range hood is repeatedly reflected by the composite type silencing plate 23, and the noise is greatly reduced;
diameter D of inner cavity of connecting device 13＝D4-50mm, the installation height H of the device3560mm, height H of the range hood4Is 760 mm; the cooking can be ensured to be normally carried out during the use process.
The embodiments of the present application have been described in detail, but the description is only for the preferred embodiments of the present application and should not be construed as limiting the scope of the application. All equivalent changes and modifications made within the scope of the present application shall fall within the scope of the present application.
Claims (3)
1. The utility model provides a smoke silencing device is held together with import for range hood which characterized in that: the device comprises a connecting device, an inner chamber and a shunting chamber, wherein the connecting device is positioned above a cavity and is of an annular hollow structure, an air inlet is arranged below the connecting device, and an air outlet is arranged above the connecting device; the outer wall surface of the connecting device is provided with an external thread;
the cavity at the lower end of the connecting device comprises an inner chamber and a plurality of shunting chambers; the inner chamber is separated from the flow dividing chamber by an annular wall surface and is positioned in the wall surface;
the inner chamber is of an annular structure, and is provided with an oil collecting ring, an inner chamber inlet, an oil return channel, a composite type silencing plate air inlet and an inner chamber air outlet from bottom to top;
the composite type silencing plate is circular and is connected with the wall surface of the inner cavity; the round composite type silencing plate is provided with a round air inlet; except the highest composite type acoustical board, the adjacent composite type acoustical boards are staggered with air inlet holes, and the uppermost composite type acoustical board is concentric with the round hole; the oil return channel is positioned in the wall surface of the inner chamber and is connected with the oil collecting ring;
the shunting chamber is annularly arranged around the wall surface, and an inlet of the shunting chamber is positioned below the shunting chamber and is connected with an oil collecting ring of the shunting chamber; the outlet of the shunting chamber is connected with the outlet of the inner chamber, and the outlet of the shunting chamber is positioned below the air inlet of the connecting device.
2. The inlet smoke-collecting and silencing device for the range hood as claimed in claim 1, wherein: the composite sound-absorbing plate is composed of small sound-absorbing holes and sound-insulating materials, the aperture of each small sound-absorbing hole is 2mm, and the sound-insulating materials are polyester fiber materials.
3. The inlet smoke-gathering and silencing device for the range hood as claimed in claim 1 or 2, wherein the adjacent branch chambers are isolated by a guide vane, the guide vane is integrally in an's' shape, the's' curve positioned in a vertical plane projects towards the inner wall surface and the outer wall surface of each branch chamber, a curved surface formed by connecting adjacent end points is formed, the inclination angle β of the wall surface is set to be smaller than α, the cross section area of a channel of each branch chamber is reduced along with the flow of gas, and the flow of oil smoke is accelerated.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019207540456 | 2019-05-23 | ||
| CN201920754045 | 2019-05-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210463157U true CN210463157U (en) | 2020-05-05 |
Family
ID=70447783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921184677.XU Withdrawn - After Issue CN210463157U (en) | 2019-05-23 | 2019-07-25 | Inlet smoke gathering and silencing device for range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210463157U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307581A (en) * | 2019-05-23 | 2019-10-08 | 浙江工业大学 | Cigarette silencing means is held together in a kind of smoke exhaust ventilator import |
-
2019
- 2019-07-25 CN CN201921184677.XU patent/CN210463157U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307581A (en) * | 2019-05-23 | 2019-10-08 | 浙江工业大学 | Cigarette silencing means is held together in a kind of smoke exhaust ventilator import |
| CN110307581B (en) * | 2019-05-23 | 2024-05-07 | 浙江工业大学 | Inlet smoke gathering silencer for smoke exhaust ventilator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200505 Effective date of abandoning: 20240507 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20200505 Effective date of abandoning: 20240507 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |