CN212362147U - Smoke exhaust ventilator - Google Patents
Smoke exhaust ventilator Download PDFInfo
- Publication number
- CN212362147U CN212362147U CN202021974496.XU CN202021974496U CN212362147U CN 212362147 U CN212362147 U CN 212362147U CN 202021974496 U CN202021974496 U CN 202021974496U CN 212362147 U CN212362147 U CN 212362147U
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- Prior art keywords
- centrifugal fan
- fan
- range hood
- air
- backward centrifugal
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- 239000000779 smoke Substances 0.000 title claims abstract description 39
- 239000003517 fume Substances 0.000 claims abstract description 8
- 230000009467 reduction Effects 0.000 claims description 34
- 229920000742 Cotton Polymers 0.000 claims description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract 1
- 239000003546 flue gas Substances 0.000 abstract 1
- 230000000391 smoking effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 238000007664 blowing Methods 0.000 description 2
- 238000010411 cooking Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The utility model relates to a range hood, range hood includes: a smoke collecting cover configured to form a smoke collecting chamber; a fan cover connected with the fume collecting hood and configured to have an air duct communicated with the fume collecting cavity; and the backward centrifugal fan is arranged in the air channel, and the direction of a middle blade rotating shaft of the backward centrifugal fan is parallel to the direction of the smoke collecting hood pointing to the fan hood. When range hood assembly is in the kitchen, the directional fan guard's of collection petticoat pipe direction is vertical direction, and the rotation axis of back centrifugal fan also sets up to set up the direction, and in the back centrifugal fan during operation, alright follow collection smoke chamber abstract wind channel with the flue gas, discharge from the wind channel at last, realize taking out the smoking function. And the backward centrifugal fan has fewer blades, the noise is lower during air supply, and the noise of the range hood during working can be reduced.
Description
Technical Field
The utility model relates to a kitchen appliance technical field especially relates to range hood.
Background
The range hood is a kitchen appliance for purifying the kitchen environment, and along with the increasing improvement of the life quality of people, the range hood becomes essential kitchen equipment for modern families. The kitchen ventilator is arranged above a kitchen stove, can rapidly pump away waste burnt by the stove and oil fume harmful to human bodies generated in the cooking process, and exhaust the waste and the oil fume to the outside, reduces indoor pollution, purifies air, and has the safety guarantee effects of gas defense and explosion prevention.
Generally, the basic principle of the range hood is to utilize a forward centrifugal fan to generate negative pressure in a smoke collection cavity so as to draw oil smoke out of a kitchen, but the forward centrifugal fan has dense blades and small blades, and the range hood has high noise during operation.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the great problem of traditional range hood noise, provided a range hood, this range hood can reach the technical effect of noise reduction.
A range hood, the range hood comprising:
a smoke collecting cover configured to form a smoke collecting chamber;
a fan cover connected with the fume collecting hood and configured to have an air duct communicated with the fume collecting cavity; and
the rear centrifugal fan is arranged in the air channel, and the direction of a middle blade rotating shaft of the rear centrifugal fan is parallel to the direction of the smoke collecting hood pointing to the fan hood.
The backward centrifugal fan in the range hood is arranged in the air duct, and the direction of the blade rotating shaft in the backward centrifugal fan is parallel to the direction of the smoke collecting hood pointing to the fan hood. When the range hood is assembled in a kitchen, the direction of the smoke collecting hood pointing to the fan cover is vertical, the rotating shaft of the backward centrifugal fan is also set to be vertical, and the backward centrifugal fan works, so that smoke can be discharged from the air channel in an abstract air channel of the smoke collecting cavity and finally discharged from the air channel, and the smoke pumping function is realized. And the backward centrifugal fan has fewer blades, the noise is lower during air supply, and the noise of the range hood during working can be reduced.
In one embodiment, the air duct is provided with an air inlet section and an air outlet section which are communicated with each other;
wherein, the air inlet section is located the collection smoke chamber with between the air-out section, the backward centrifugal fan is located the air inlet section.
In one embodiment, the fan further comprises a noise reduction layer, the noise reduction layer is arranged on the inner wall of the air inlet section, and the air outlet of the backward centrifugal fan faces the noise reduction layer.
In one embodiment, one surface of the noise reduction layer facing the backward centrifugal fan is a torus; and the diameter of the circular ring surface is gradually increased in the direction that the air inlet section points to the air outlet section.
In one embodiment, the projection of the centrifugal fan towards the noise reduction layer is entirely located on the noise reduction layer.
In one embodiment, the noise reduction layer is made of noise reduction cotton.
In one embodiment, the fan further comprises an axial flow fan, the axial flow fan is arranged on the air outlet section, and a rotating shaft of a blade in the axial flow fan is arranged in parallel with a rotating shaft of a blade in the backward centrifugal fan.
In one embodiment, the extending direction of the air duct is parallel to the direction of the backward centrifugal fan pointing to the axial flow fan.
In one embodiment, the backward centrifugal fan has a first air inlet and a first air outlet which are communicated with each other, the first air inlet is opened along the direction of the rotation axis of the blade of the backward centrifugal fan, and the first air outlet is formed along the circumferential direction of the rotation of the blade of the backward centrifugal fan.
In one embodiment, the axial flow fan has a second air inlet and a second air outlet which are communicated with each other, the second air inlet and the second air outlet are arranged along the rotating axial direction of the blades in the axial flow fan, and the first air outlet is communicated with the second air inlet.
Drawings
Fig. 1 is a schematic structural diagram of a range hood according to an embodiment of the present invention.
100. A range hood; 10. a smoke collecting hood; 11. a smoke collection cavity; 30. a fan guard; 31. an air duct; 312. an air inlet section; 314. an air outlet section; 50. a backward centrifugal fan; 52. a first air inlet; 54. a first air outlet; 40. a noise reduction layer; 60. an axial flow fan; 62. a second air inlet; 64. and a second air outlet.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
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; can be mechanically or electrically connected; 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.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Fig. 1 shows a schematic structural diagram of a range hood in an embodiment of the present invention.
Referring to fig. 1, in an embodiment of the present invention, a range hood 100 is provided, including a smoke collecting cover 10, a fan cover 30 and a backward direction centrifugal fan 50, the smoke collecting cover 10 is configured to be formed with a smoke collecting cavity 11, the fan cover 30 is connected with the smoke collecting cover 10, and is configured to have an air duct 31 communicated with the smoke collecting cavity 11, the backward direction centrifugal fan 50 is disposed in the air duct 31, and a direction of a blade rotation axis in the backward direction centrifugal fan 50 is parallel to a direction of the smoke collecting cover 10 pointing to the fan cover 30. It can be understood that, when the range hood 100 is assembled in a kitchen, the direction of the smoke collection cover 10 pointing to the fan guard 30 is a vertical direction, the rotating shaft of the backward centrifugal fan 50 is also set to be a setting direction, and when the backward centrifugal fan 50 works, smoke can be discharged from the air duct 31 abstracted from the smoke collection cavity 11 and finally discharged from the air duct 31, so that the smoke extraction function is realized. Moreover, the backward centrifugal fan 50 has fewer blades, so that the noise is lower during air supply, and the noise of the range hood 100 during operation can be reduced.
Further, the air duct 31 includes an air inlet section 312 and an air outlet section 314 which are communicated with each other; wherein, the air inlet section 312 is located between the smoke collecting cavity 11 and the air outlet section 314, and the backward centrifugal fan 50 is arranged on the air inlet section 312. That is, the backward centrifugal fan 50 located at the air intake section 312 drives the oil smoke into the smoke collecting cavity 11, and then flows to the outside from the air outlet section 314 through the air intake section 312.
Furthermore, the range hood 100 further includes a noise reduction layer 40, the noise reduction layer 40 is disposed on the inner wall of the air inlet section 312, and the air outlet of the backward centrifugal fan 50 faces the noise reduction layer 40, so that the airflow blown out from the backward centrifugal fan 50 does not directly impact the inner wall of the air inlet section 312, and the noise generated by the airflow flowing through the noise reduction layer 40 can be absorbed, thereby further reducing the noise generated during the operation of the range hood 100. And, the wind blown out by the backward centrifugal fan 50 is directed to the noise reduction layer 40, and then enters the air outlet section 314 to flow to the outside after reversing at the noise reduction layer 40, so that the air flow at the noise reduction layer 40 is reversed to be square, and the noise generated by air flow reversing can be reduced by the noise reduction layer 40. Optionally, the noise reduction layer 40 is made of noise reduction cotton, and has a good sound absorption effect.
Specifically, one surface of the noise reduction layer 40 facing the backward centrifugal fan 50 is a torus; in the direction of the directional air outlet section 314 of air inlet section 312, the diameter of the torus gradually increases, that is, in the flowing direction of the air current, the diameter of the noise reduction layer 40 gradually increases to gradually disperse the gathered air current, allow the air current to flow smoothly, reduce the air current resistance, and reduce the noise when the air current flows.
More specifically, the projection of the backward centrifugal fan 50 toward the noise reduction layer 40 is entirely located on the noise reduction layer 40, so that the noise reduction layer 40 is wide in laying range, can cover the blowing range of the backward centrifugal fan 50, and can better absorb the noise generated by the airflow blown out of the backward centrifugal fan 50.
In some embodiments, the range hood 100 further includes an axial flow fan 60, the axial flow fan 60 is disposed in the air outlet section 314, and a rotation axis of a blade in the axial flow fan 60 is parallel to a rotation axis of a blade in the backward centrifugal fan 50, so that the axial flow fan 60 and the backward centrifugal fan 50 are mutually matched, so that the oil smoke directly enters an air port of the backward centrifugal fan 50 through the smoke collection cavity 11, and the smoke collection efficiency of the range hood 100 is improved. Moreover, the noise of the range hood 100 during operation is reduced by the characteristic of less noise of the blades of the backward centrifugal fan 50. In addition, the static pressure in the air duct 31 is reduced by the axial flow fan 60, the air quantity of the range hood 100 is improved to the maximum extent, the air environment of a cooking area is improved, and the performance of the range hood 100 is comprehensively improved.
Further, the extending direction of the air duct 31 is parallel to the direction of the rear centrifugal fan 50 pointing to the axial flow fan 60, which is equivalent to that the air duct 31 is arranged in a linear type, and the rear centrifugal fan 50 and the axial fan are sequentially arranged in the air duct 31, so that the installation is simple.
Specifically, the backward centrifugal fan 50 has a first air inlet 52 and a first air outlet 54 which are communicated with each other, the backward centrifugal fan 50 has the first air inlet 52 along the rotation axis direction of its own blade, and the backward centrifugal fan 50 is formed with the first air outlet 54 along the radial direction of the circumference formed by the rotation of its own blade. Thus, the airflow may enter the backward centrifugal fan 50 through the first air inlet 52 in the axial direction, then flow out of the backward centrifugal fan 50 through the first air outlet 54 in the radial direction, and then flow out of the air duct 31 to the outside after blowing to the noise reduction layer 40.
The axial flow fan 60 has a second air inlet 62 and a second air outlet 64 which are communicated with each other, the second air inlet 62 and the second air outlet 64 are arranged along the direction of the blade rotation axis in the axial flow fan 60, and the first air outlet 54 is communicated with the second air inlet 62. Thus, the airflow flows out from the first air outlet 54 of the backward centrifugal fan 50, enters the second air inlet 62 of the axial flow fan 60, and then flows out through the second air outlet 64 along the axial direction of the axial flow fan 60. In this way, when the axial flow fan 60 operates, the air in the air duct 31 is sucked and exhausted upward, so that the oil smoke is exhausted from the air duct 31 in the vertical direction, and thus the air pressure in the air duct 31 can be reduced, thereby forming a negative pressure therein. The negative pressure in the air duct 31 is favorable for improving the working condition of the backward centrifugal fan 50, the working performance of the backward centrifugal fan 50 is enhanced, and the effect of increasing the air duct 31 when the air exhausted by the backward centrifugal fan 50 and the axial flow fan 60 synchronously work is kept away to reduce the noise is achieved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A range hood, characterized in that, range hood includes:
a smoke collection cover (10) configured to form a smoke collection chamber (11);
a fan cover (30) connected to the fume collecting cover (10) and configured to have an air duct (31) communicating with the fume collecting chamber (11); and
backward centrifugal fan (50), backward centrifugal fan (50) are located in wind channel (31), the direction at middle blade rotation axis place of backward centrifugal fan (50) with collection petticoat pipe (10) points to the direction of fan cover (30) is parallel.
2. The range hood according to claim 1, wherein the air duct (31) comprises an air inlet section (312) and an air outlet section (314) which are communicated with each other;
wherein, air inlet section (312) be located collection smoke chamber (11) with between air-out section (314), backward centrifugal fan (50) are located air inlet section (312).
3. The range hood according to claim 2, further comprising a noise reduction layer (40), wherein the noise reduction layer (40) is disposed on an inner wall of the air intake section (312), and an air outlet of the backward centrifugal fan (50) faces the noise reduction layer (40).
4. The range hood according to claim 3, wherein one surface of the noise reduction layer (40) facing the backward centrifugal fan (50) is a torus; in the direction that air inlet section (312) point to air outlet section (314), the diameter of torus increases gradually.
5. A range hood according to claim 3, wherein the projection of the centrifugal fan towards the noise reduction layer (40) is entirely located on the noise reduction layer (40).
6. The extractor hood according to any of claims 3 to 5, wherein the noise reduction layer (40) is made of noise reduction cotton.
7. The range hood according to any one of claims 2-5, further comprising an axial flow fan (60), wherein the axial flow fan (60) is disposed at the air outlet section (314), and a rotation axis of a blade in the axial flow fan (60) is parallel to a rotation axis of a blade in the backward centrifugal fan (50).
8. The range hood according to claim 7, wherein the extending direction of the air duct (31) is parallel to the direction in which the backward centrifugal fan (50) points to the axial flow fan (60).
9. The range hood according to claim 7, wherein the backward centrifugal fan (50) has a first air inlet (52) and a first air outlet (54) which are communicated with each other, the first air inlet (52) is opened on the backward centrifugal fan (50) along the rotation axis direction of the blade, and the first air outlet (54) is formed on the backward centrifugal fan (50) along the radial direction of the circumference formed by the rotation of the blade.
10. The range hood according to claim 9, wherein the axial flow fan (60) has a second air inlet (62) and a second air outlet (64) which are communicated with each other, the second air inlet (62) and the second air outlet (64) are arranged along a direction of a blade rotation axis in the axial flow fan (60), and the first air outlet (54) is communicated with the second air inlet (62).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021974496.XU CN212362147U (en) | 2020-09-10 | 2020-09-10 | Smoke exhaust ventilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021974496.XU CN212362147U (en) | 2020-09-10 | 2020-09-10 | Smoke exhaust ventilator |
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| Publication Number | Publication Date |
|---|---|
| CN212362147U true CN212362147U (en) | 2021-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021974496.XU Active CN212362147U (en) | 2020-09-10 | 2020-09-10 | Smoke exhaust ventilator |
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| Country | Link |
|---|---|
| CN (1) | CN212362147U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111964121A (en) * | 2020-09-10 | 2020-11-20 | 珠海格力电器股份有限公司 | Smoke exhaust ventilator |
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2020
- 2020-09-10 CN CN202021974496.XU patent/CN212362147U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111964121A (en) * | 2020-09-10 | 2020-11-20 | 珠海格力电器股份有限公司 | Smoke exhaust ventilator |
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