CN109990328B - Range hood and fan assembly thereof - Google Patents
Range hood and fan assembly thereof Download PDFInfo
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- CN109990328B CN109990328B CN201711476187.2A CN201711476187A CN109990328B CN 109990328 B CN109990328 B CN 109990328B CN 201711476187 A CN201711476187 A CN 201711476187A CN 109990328 B CN109990328 B CN 109990328B
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- 230000005855 radiation Effects 0.000 claims abstract description 27
- 238000001914 filtration Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 9
- 238000009499 grossing Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 239000003517 fume Substances 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000000391 smoking effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Air-Flow Control Members (AREA)
Abstract
The invention relates to a range hood and a fan assembly thereof, wherein a noise reduction module is added at an air inlet of a volute of the fan assembly, and the noise reduction module is optimally designed, so that the noise reduction module can achieve the effects of smoothing air flow at the air inlet and reducing the turbulence intensity of the air flow at the air inlet, and the aim of reducing the noise of the range hood is achieved under the condition that the air quantity and the air pressure of the range hood are not influenced. The annular grating of the noise reduction grating can reduce the radial flow of the air flow at the air inlet, and the radiation grating can reduce the circumferential flow of the air flow at the air inlet, so that the disturbance degree of the air flow is reduced. According to the invention, the air inlet ends of all the annular grids are matched with the air flow speed contour line distribution at the air inlet, so that air flows with the same speed can enter the annular grids simultaneously; the distribution direction of the annular grating is consistent with the air flow speed direction of the air inlet. The invention can reduce air flow disturbance and noise on one hand, and has no influence on air quantity and air pressure on the other hand.
Description
Technical Field
The invention relates to the technical field of kitchen household appliances, in particular to a range hood and a fan assembly thereof.
Background
The range hood is an important electrical appliance in a modern household kitchen, and the smoking, smoke control effect and noise level of the range hood influence the use experience of a user on products, so that how to reduce the noise of the range hood is also an important research direction.
The range hood generally comprises a shell, a volute, a centrifugal fan, an oil filtering module and the like, and noise generated by high-speed rotation of the centrifugal fan in the range hood during operation is a main noise source of the range hood. The noise of the range hood is generally reduced by optimizing the centrifugal fan and the volute structure in the prior art. However, the position of the air inlet of the volute is also an important noise source, but the resistance of the centrifugal fan is often increased due to the noise reduction component arranged at the position of the air inlet of the volute, so that the air quantity, the air pressure and the like of the range hood are affected, and the fume removal effect of the range hood is affected. Therefore, in order to ensure the use effect of the range hood, the air inlet of the existing range hood is not provided with a noise reduction part.
Disclosure of Invention
The invention aims to provide a fan assembly based on a range hood, which solves the technical problem of noise at an air inlet of a volute under the condition that the fume removing effect of the range hood is not affected.
In order to solve the technical problems, the invention is realized by adopting the following technical scheme:
the fan assembly of the range hood comprises a volute and a centrifugal fan positioned in the volute, wherein an air inlet and an air outlet are formed in the volute, a noise reduction module is arranged at the air inlet and comprises noise reduction grids and air guide rings, the noise reduction grids comprise a plurality of annular grids which are sequentially arranged outwards from the same central axis, the air guide rings are positioned at the periphery of the annular grids at the outermost layer, and the air guide rings and the annular grids have the same central axis; the air inlet end of the annular grating protrudes out of a plane where the air inlet end of the outer annular grating adjacent to the annular grating is located in the air inlet direction; the included angle between the connecting line of the air inlet end and the air outlet end of the annular grating and the perpendicular line of the air outlet end and the central shaft is smaller than the included angle between the connecting line of the air inlet end and the air outlet end of the outer annular grating adjacent to the annular grating and the perpendicular line of the air outlet end and the central shaft; a plurality of radiation grids are arranged between two adjacent annular grids.
As described above, the number of radiation gratings between the annular grating and the inner annular grating adjacent thereto is smaller than the number of radiation gratings between the annular grating and the outer annular grating adjacent thereto.
As described above, the distance between the air inlet end of the annular grille and the projection of the air outlet end of the outer annular grille adjacent to the annular grille on the vertical plane of the central shaft is smaller than the distance between the air outlet end of the annular grille and the projection of the air inlet end of the inner annular grille adjacent to the annular grille on the vertical plane of the central shaft.
In the fan assembly of the range hood, on the plane where the central shaft is located, the air inlet ends of the annular grids are positioned on the same elliptical arc.
As described above, the radiation grids between the annular grids and the adjacent inner annular grids and the radiation grids between the annular grids and the adjacent outer annular grids are staggered.
The fan assembly of the range hood is characterized in that the air guide ring is provided with a horn-shaped air guide part.
As described above, the air guide ring has a circular mounting portion connected to the air guide portion.
As described above, the cross section of the plane where the annular grille and the central axis are located is arc-shaped.
As described above, the included angle of the connecting line between the two ends of the circular arc and the center of the circle where the circular arc is located is in the range of 20-40 degrees.
The utility model provides a range hood, the range hood includes casing and is located the foretell fan subassembly of casing, the air intake has been seted up on the casing, be provided with the oil filter module on the air intake.
Compared with the prior art, the invention has the advantages and positive effects that: according to the invention, the noise reduction module is added at the air inlet of the volute, and the noise reduction module is optimally designed, so that the noise reduction module can achieve the effects of smoothing the air flow at the air inlet and reducing the turbulence intensity of the air flow at the air inlet, and the purpose of reducing the noise of the range hood is achieved under the condition that the air quantity and the air pressure of the range hood are not influenced. The annular grating of the noise reduction grating can reduce the radial flow of the air flow at the air inlet, and the radiation grating can reduce the circumferential flow of the air flow at the air inlet, so that the disturbance degree of the air flow is reduced. The air inlet ends of the annular grids are protruded out of the plane where the air inlet ends of the adjacent outer annular grids are located in the air inlet direction, and the air inlet ends of all the annular grids are matched with the air flow speed contour line distribution at the air inlet, so that air flows with the same speed can enter the annular grids simultaneously; in addition, because the air flow speed of the air inlet is different from the angle of the air inlet at different positions, the included angle between the connecting line of the air inlet end and the air outlet end of the annular grille and the perpendicular line of the air outlet end and the central shaft is smaller than the included angle between the connecting line of the air inlet end and the air outlet end of the adjacent outer annular grille and the perpendicular line of the air outlet end and the central shaft, and the distribution direction of the annular grille is consistent with the air flow speed direction of the air inlet. In summary, the invention can reduce air flow disturbance and noise on one hand, and has no influence on air quantity and air pressure on the other hand.
Other features and advantages of the present invention will become more apparent from the following detailed description of embodiments of the present invention, which is to be read in connection with the accompanying drawings.
Drawings
Fig. 1 is a schematic view of a range hood according to an embodiment of the present invention with a portion of the housing removed.
Fig. 2 is a perspective view of a noise reduction module according to an embodiment of the invention.
Fig. 3 is a front view of a noise reduction module according to an embodiment of the invention.
Fig. 4 is a side view of a noise reduction module according to an embodiment of the invention.
Fig. 5 and 6 are cross-sectional views of a noise reduction module according to an embodiment of the present invention in a plane where a central axis is located.
Fig. 7 is a cross-sectional view of an annular grille of a noise reduction module in accordance with an embodiment of the present invention in a plane of a central axis.
Fig. 8 is a cross-sectional view of a single annular grill according to an embodiment of the present invention in a plane of the central axis.
Fig. 9 is a cross-sectional view of a single annular grill according to an embodiment of the present invention in the plane of the central axis.
Fig. 10 is an assembly schematic diagram of a split noise reduction module according to an embodiment of the invention.
FIG. 11 is an exploded view of a split noise reduction module according to an embodiment of the present invention.
FIG. 12 is a graph showing airflow velocity profiles at the air inlet of the volute according to an embodiment of the invention.
Fig. 13 is a velocity vector diagram of CFD simulation analysis of the position of the air inlet of the volute in accordance with an embodiment of the present invention.
1, a shell; 2. an oil filtering module; 3. a volute; 4. a noise reduction module; 41. a noise reduction grid; 411. an annular grille; 412. a radiation grille; 413. installing ribs; 42. an air guide ring; 421. a horn mouth-shaped air guide part; 422. and a circular ring-shaped mounting part.
Detailed Description
The following describes specific embodiments of the present invention in detail with reference to the drawings.
The embodiment provides a range hood, as shown in fig. 1, the range hood includes a housing 1 and a fan assembly located in the housing 1, an air inlet (not labeled in the figure) for introducing air outside the housing 1 into the housing 1 is provided on the bottom of the housing 1, an oil filtering module 2 is provided on the air inlet, and the oil filtering module 2 is used for filtering oil in the air when the air outside the housing 1 is introduced into the housing 1. The fan assembly is used for generating air flow, and the fan assembly comprises a volute 3 and a centrifugal fan (not shown in the figure) positioned in the volute 3, an air inlet (not marked in the figure) is formed in the axial direction of the centrifugal fan on a side plate of the volute 3, and an air outlet is formed above the volute 3. The key point of the embodiment is that the noise reduction module 4 is added at the air inlet of the volute 3 so as to achieve the effects of smoothing the air flow at the air inlet and reducing the turbulence intensity of the air flow at the air inlet, and the purpose of reducing the noise of the range hood is achieved under the condition that the air quantity and the air pressure of the range hood are not influenced. The noise reduction module 4 mainly has the effect of reducing noise, and also has the effect of assisting in removing oil in the air, and the removed oil is collected to the oil filtering module 2 through the oil outlet at the bottom of the volute 3.
The noise reduction module 4 is specifically described below, and the air inlets refer to the air inlets of the volute 3.
As shown in fig. 2-5, the noise reduction module 4 of the present embodiment includes a noise reduction grille 41 and a wind guiding ring 42, where the noise reduction grille 41 and the wind guiding ring 42 of the present embodiment are integrally formed, and the wind guiding ring 42 is located at the periphery of the noise reduction grille 41. The air guide ring 42 is used for smoothly guiding air to the centrifugal fan, ensuring uniform air flow at the air inlet and achieving the purpose of improving the efficiency of the fan. The noise reduction grille 41 is used for reducing the disturbance degree of the air flow at the air inlet, thereby reducing the vortex noise of the fan.
As shown in fig. 5, the wind guide ring 42 of the present embodiment includes a flare wind guide portion 421 and a circular ring-shaped mounting portion 422. The horn mouth-shaped air guide portion 421 is used for guiding air flow at the air inlet, so that the air flow is facilitated to flow into the air inlet, and noise is reduced. The annular mounting portion 422 is located at the periphery of the bell-mouth-shaped air guiding portion 421 and is connected to the bell-mouth-shaped air guiding portion 421, and is used for mounting the noise reduction module 4 at the air inlet. As shown in fig. 2 and 3, screw holes are provided at the circular ring-shaped mounting portion 422, and the circular ring-shaped mounting portion 422 is mounted at the air inlet by screws.
As shown in fig. 2 and 3, the noise reduction grille 41 includes a plurality of annular grilles 411 sequentially arranged from the same central axis to the outside, the air guide ring 42 is located at the periphery of the outermost annular grille 411, and the air guide ring 42 and the annular grille 411 have the same central axis.
As shown in fig. 2, 4 and 5, the air inlet end of the annular grille 411 protrudes in the air inlet direction from the plane where the air inlet end of the outer annular grille 411 adjacent to the annular grille 411 is located.
Preferably, as shown in fig. 5, on the plane where the central axis is located, the air inlet ends of the annular grilles 411 are on the same elliptical arc.
The wind-guiding ring 42 of the present embodiment includes a bell-mouth wind-guiding portion 421, on the plane where the central axis is located, the wind-inlet ends of the annular grids 411 are on the same elliptical arc, and the flow distribution rule of the airflow at the wind-inlet position is met. As shown in fig. 12, it can be seen from the CFD simulation result that, at the air inlet position, the air flow velocity contour line distribution presents an elliptical cross section, and in order to achieve the purpose of reducing air flow disturbance, the noise reduction grille 41 must make the air flow with the same velocity enter the noise reduction grille 41 at the same time, so that the shape of the annular grille 411 (on the plane of the central axis, the plane of the air inlet ends of the annular grilles 411) is designed to be consistent with the air flow distribution.
The present embodiment has several radiation gratings 412 between two adjacent ring gratings 411.
The noise reduction grille 41 is composed of an annular grille 411 and a radiation grille 412, the annular grille 411 is arranged concentrically with the air guide ring 42, the radiation grille 412 is a strip-shaped grille radiating outwards from the center of the annular grille 411, and the number of the radiation grilles 412 between the annular grille 411 and the inner annular grille 411 adjacent thereto is smaller than the number of the radiation grilles 412 between the annular grille 411 and the outer annular grille 411 adjacent thereto. The number of radiation gratings between two adjacent annular gratings increases gradually from the center outwards, the number of radiation gratings between the center position and the two adjacent annular gratings is the smallest, and the number of radiation gratings between the outermost layer and the two adjacent annular gratings is the largest. Since the diameter of the central annular grating is the smallest and the diameter of the outermost annular grating is the largest, if the same number of radiation gratings are arranged from the center to the outermost layer, the effective airflow passing area of the central area is reduced, the resistance of the position is increased, and meanwhile, since the diameter of the central annular grating is the smallest, the airflow flowing in the circumferential direction is relatively small, so that the aim of reducing the airflow flowing in the circumferential direction can be achieved by adopting the least radiation gratings. The radiation grille of the embodiment is arranged in a manner that the resistance of the running of the air flow is not increased on the basis of reducing the circumferential flow of the air flow.
The radiation gratings 412 between the annular gratings 411 and the inner annular gratings 411 adjacent thereto are staggered with the radiation gratings 412 between the annular gratings 411 and the outer annular gratings 411 adjacent thereto. The annular grids and the radiation grids are arranged on the noise reduction grid 41, so that radial flow and circumferential flow of air flow can be reduced, but the radial flow and the circumferential flow of air flow are still unavoidable, so that vortex noise can be generated, the generated vortex noise is prevented from being concentrated on certain frequencies, and the noise of the frequencies has larger amplitude, therefore, the radiation grids between the annular grids are designed to be staggered, the noise frequencies can be staggered, and obvious peaks of the noise on certain frequencies are avoided.
In order to reduce noise by the noise reduction grid 41, the noise reduction grid 41 must be capable of reducing disturbance of air flow, and when the air flow enters the centrifugal fan, the air flow flows along the axial direction of the rotation shaft (central shaft) of the noise reduction grid 41, and also flows in radial direction and circumferential direction, the annular grid is arranged to reduce radial direction of the air flow, and the radiation grid is arranged to reduce circumferential direction of the air flow.
As shown in fig. 7, an included angle a2 between a connecting line of an air inlet end and an air outlet end of the annular grille and a perpendicular line of the air outlet end and the central shaft is smaller than an included angle a1 between a connecting line of an air inlet end and an air outlet end of an outer annular grille adjacent to the annular grille and a perpendicular line of the air outlet end and the central shaft.
Assuming that the annular grating with the largest diameter is X1, the annular grating with the smallest diameter is Xn, and the middle annular grating is X2 and X3 respectively. Xn-1, wherein the included angle between X1 and the perpendicular lines of the air outlet end and the central shaft is a1, the included angle between X2 and the perpendicular lines of the air outlet end and the central shaft is a2, and so on, and the included angle between Xn and the perpendicular lines of the air outlet end and the central shaft is an, a1 to an satisfy a1 & gta 2 & gt a3.. A & gtan & gt90°;
as shown in fig. 8, the annular grille 411 is composed of four sections of arcs L1, L2, L3 and L4, wherein L3 and L4 are concentric arcs, the arcs L1 and L2 are tangent to the arcs L3 and L4, the center of the arc L1 is a (a is an air inlet end), the center of the arc L2 is B (B is an air outlet end), AB is a connecting line of the air inlet end and the air outlet end of the annular grille, and the included angle between a straight line AB and a horizontal line S is an included angle between the connecting line of the air inlet end and the air outlet end and a perpendicular line of the central shaft.
As can be seen from the velocity vector diagram of the CFD simulation analysis of the air inlet of FIG. 13, the velocity of the air entering the centrifugal fan is different from the angle of the horizontal line (horizontal line in the drawing) at different positions, the velocity angle gradually increases from the center to the outer ring, the center angle is about 90 degrees, and the outer ring angle is maximum, so that the resistance of the air inlet position is not increased after the annular grille is increased, and therefore, the included angle between the straight line of the annular grille and the horizontal line (horizontal line in the drawing) is required to be kept consistent with the velocity distribution. The setting and the speed distribution of this embodiment annular grid are always, can not increase the resistance in air intake position, can guarantee amount of wind and wind pressure.
As shown in fig. 6, the distance between the air inlet end of the annular grille and the projection of the air outlet end of the adjacent outer annular grille on the perpendicular plane of the central shaft is smaller than the distance between the air outlet end of the annular grille and the projection of the air inlet end of the adjacent inner annular grille on the perpendicular plane of the central shaft.
Assuming that the annular grating with the largest diameter is X1, the annular grating with the smallest diameter is Xn, the intermediate annular gratings are X2 and X3 respectively, the distance between the projections of X1 and X2 on the vertical plane of the central shaft is t1, the distance between the projections of X2 and X3 on the vertical plane of the central shaft is t2, and so on, the distance between the projections of Xn-1 and Xn on the vertical plane of the central shaft is tn-1, and t1 to tn satisfy t1 < t2 < t3.. Because the flow gradient of each area of the air inlet has a certain influence on the air quantity, the pressure and the noise of the fan, the arrangement mode of the embodiment can ensure that the overflow areas between adjacent annular grids are the same or approximately the same, so that each area of the air inlet can obtain smaller flow gradient, namely, the flow between each annular grid can be ensured to be the same, the air quantity is ensured, and the noise is reduced.
As shown in fig. 9, the cross section of the plane where the annular grating and the central axis are located is circular arc. The included angle range beta of the connecting line between the two ends of the circular arc and the circle center of the circular arc is between 20 degrees and 40 degrees. The annular grille is mainly used for reducing radial flow of air flow and achieving the purpose of better controlling the air flow. The included angle beta of the connecting line between the two ends of the circular arc and the circle center of the circular arc is actually the arc length of the cross section of the annular grating, the included angle beta is increased, the longer the arc length of the cross section of the annular grating is, the purpose of better controlling the airflow can be achieved, but due to the viscosity characteristic of the air, friction resistance is generated on the wall surface of the annular grating, namely, the friction resistance is related to the viscosity and the speed of the air, and is also related to the length of the air flowing through the wall surface, the longer the arc length is, the larger the friction resistance is, the resistance of the integral grating is increased, so that the whole air volume is attenuated, and therefore, the included angle beta is preferably 20-40 degrees, the annular grating can better control the airflow, reduce radial flow and avoid the whole air volume attenuation caused by overlarge friction resistance.
The noise reduction module 4 of the embodiment has simple structure and convenient production and assembly, and can reduce the noise of the range hood under the condition of not causing the air quantity attenuation of the range hood.
As shown in the following table, after the air inlet of the prior art is not provided with any component and the noise reduction grid of the embodiment is added, the air quantity and the noise of the range hood measured at the same fan rotating speed are compared, and therefore the noise is reduced under the condition that the air quantity is not reduced.
| Air volume (cube/min) | Noise dB (A) | |
| Prior Art | 18.53 | 71.5 |
| This embodiment | 18.51 | 69 |
The noise reduction grill 41 and the air guide ring 42 of the present embodiment may be integrally formed of a resin or a metal material.
Of course, as shown in fig. 10 and 11, the air guide ring 42 and the noise reduction grill 41 may be molded separately and then fixed together by a screw, a buckle, a clip, or other fixing structure. Specifically, the outer edge of the noise reduction grille 41 is provided with a mounting rib 413, and the mounting rib 413 is provided with a screw hole or a buckle or a clamping groove, and is assembled with the screw hole or the clamping groove or the buckle on the annular mounting part 422 of the air guide ring 42.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The fan assembly of the range hood comprises a volute and a centrifugal fan positioned in the volute, wherein an air inlet and an air outlet are formed in the volute, and the fan assembly is characterized in that a noise reduction module is arranged at the air inlet and comprises a noise reduction grid and a wind guide ring, the noise reduction grid comprises a plurality of annular grids which are sequentially arranged outwards from the same central axis, the wind guide ring is positioned at the periphery of the annular grid at the outermost layer, and the wind guide ring and the annular grid have the same central axis; the air inlet end of the annular grating protrudes out of a plane where the air inlet end of the outer annular grating adjacent to the annular grating is located in the air inlet direction; the included angle between the connecting line of the air inlet end and the air outlet end of the annular grating and the perpendicular line of the air outlet end and the central shaft is smaller than the included angle between the connecting line of the air inlet end and the air outlet end of the outer annular grating adjacent to the annular grating and the perpendicular line of the air outlet end and the central shaft; a plurality of radiation grids are arranged between two adjacent annular grids.
2. The range hood fan assembly of claim 1, wherein the number of radiant gratings between the annular grating and its adjacent inner annular grating is less than the number of radiant gratings between the annular grating and its adjacent outer annular grating.
3. The range hood fan assembly of claim 1, wherein a distance between the air inlet end of the annular grill and a projection of the air outlet end of an adjacent outer annular grill onto a vertical plane of the central axis is less than a distance between the air outlet end of the annular grill and a projection of the air inlet end of an adjacent inner annular grill onto a vertical plane of the central axis.
4. The range hood fan assembly of claim 1, wherein the inlet ends of the plurality of annular grilles are on the same elliptical arc on a plane in which the central axis is located.
5. The range hood fan assembly of claim 1, wherein the radiation grids between the annular grid and its adjacent inner annular grid are staggered from the radiation grids between the annular grid and its adjacent outer annular grid.
6. The range hood fan assembly of claim 1, wherein the air guide ring has a flare-like air guide.
7. The range hood fan assembly of claim 6, wherein the air guide ring has an annular mounting portion that interfaces with the air guide portion.
8. The range hood fan assembly of claim 1, wherein the annular grille and the central axis lie in a plane having a circular arc-shaped cross section.
9. The range hood fan assembly of claim 8, wherein the included angle of the connecting line between the two ends of the circular arc and the circle center of the circular arc is between 20 degrees and 40 degrees.
10. A range hood, characterized in that the range hood comprises a housing and the fan assembly according to any one of claims 1-9 arranged in the housing, an air inlet is formed in the housing, and an oil filtering module is arranged on the air inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711476187.2A CN109990328B (en) | 2017-12-29 | 2017-12-29 | Range hood and fan assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711476187.2A CN109990328B (en) | 2017-12-29 | 2017-12-29 | Range hood and fan assembly thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109990328A CN109990328A (en) | 2019-07-09 |
| CN109990328B true CN109990328B (en) | 2023-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711476187.2A Active CN109990328B (en) | 2017-12-29 | 2017-12-29 | Range hood and fan assembly thereof |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685373B (en) * | 2020-05-19 | 2022-11-01 | 宁波方太厨具有限公司 | Method for selecting air inlet ring of fan system |
| CN113776097A (en) * | 2021-08-12 | 2021-12-10 | 海信(广东)厨卫系统股份有限公司 | Fan assembly and range hood |
| CN219101727U (en) | 2022-12-21 | 2023-05-30 | 台达电子工业股份有限公司 | Flow guiding grille |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012107627A (en) * | 2012-01-10 | 2012-06-07 | Fuji Industrial Co Ltd | Bell mouth for blowers and range hood |
| DE202014105284U1 (en) * | 2014-11-04 | 2014-12-08 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Protective grille with improved efficiency and noise behavior |
| CN107191415A (en) * | 2017-05-05 | 2017-09-22 | 珠海格力电器股份有限公司 | A kind of cell structure and the fan with it |
| CN107503958A (en) * | 2017-09-22 | 2017-12-22 | 杭州德意电器股份有限公司 | A kind of centrifugal blower fan system for range hood |
| CN207962776U (en) * | 2017-12-29 | 2018-10-12 | 青岛海尔智能技术研发有限公司 | A kind of range hood and its fan assembly |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050095121A1 (en) * | 2003-11-05 | 2005-05-05 | Anand Vithani | Unitary fan-motor grill assembly |
-
2017
- 2017-12-29 CN CN201711476187.2A patent/CN109990328B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012107627A (en) * | 2012-01-10 | 2012-06-07 | Fuji Industrial Co Ltd | Bell mouth for blowers and range hood |
| DE202014105284U1 (en) * | 2014-11-04 | 2014-12-08 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Protective grille with improved efficiency and noise behavior |
| CN107191415A (en) * | 2017-05-05 | 2017-09-22 | 珠海格力电器股份有限公司 | A kind of cell structure and the fan with it |
| CN107503958A (en) * | 2017-09-22 | 2017-12-22 | 杭州德意电器股份有限公司 | A kind of centrifugal blower fan system for range hood |
| CN207962776U (en) * | 2017-12-29 | 2018-10-12 | 青岛海尔智能技术研发有限公司 | A kind of range hood and its fan assembly |
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| CN109990328A (en) | 2019-07-09 |
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