CN110513741B - Smoke exhaust ventilator - Google Patents
Smoke exhaust ventilator Download PDFInfo
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- CN110513741B CN110513741B CN201910822285.XA CN201910822285A CN110513741B CN 110513741 B CN110513741 B CN 110513741B CN 201910822285 A CN201910822285 A CN 201910822285A CN 110513741 B CN110513741 B CN 110513741B
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- fan assembly
- rack
- range hood
- box body
- frame
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- 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)
Abstract
The invention discloses a range hood, comprising: the device comprises a rack, wherein a flue is arranged inside the rack; the upper end of the box body is provided with a mounting hole position, the rack is arranged outside the mounting hole position, and the box body is provided with a back plate; the fan assembly is arranged inside the box body, and an air outlet of the fan assembly is communicated with the flue; the support, the support is located fan subassembly orientation backplate one side, the support is equipped with installation department and fixed part, the installation department with the fan subassembly is connected, the fixed part with the support is close to installation hole site one end is connected. According to the invention, by utilizing the characteristic that the position close to the edge of one end of the box body is the most low-frequency noise modal node below 400Hz, and the vibration energy transfer rate of the modal node is lowest, the bracket is directly connected with the position of the edge of the rack close to the box body, so that the abnormal sound energy of the vibration of the fan assembly is cut off at the position, thereby eliminating the abnormal sound and realizing the effect of reducing the low-frequency abnormal sound of the fan assembly.
Description
Technical Field
The invention relates to the field of kitchen appliances, in particular to a range hood.
Background
In the operation process of the range hood, the low-frequency abnormal sound of the motor is a frequently occurring technical problem. In order to solve the problem, the design mode of the existing range hood is that the vibration isolating pad is arranged outside the motor, and the problem of low-frequency abnormal sound caused by motor vibration is reduced through the vibration isolating pad, but in the actual use process, the effect of the vibration isolating pad is not ideal, and the effect of reducing the low-frequency abnormal sound cannot be achieved.
Disclosure of Invention
The invention mainly aims to provide a range hood and aims to solve the problem of abnormal sound of a low-frequency motor of the range hood.
In order to achieve the above object, the present invention provides a range hood, comprising:
the device comprises a rack, wherein a flue is arranged inside the rack;
the upper end of the box body is provided with a mounting hole position, the rack is arranged outside the mounting hole position, and the box body is provided with a back plate;
the fan assembly is arranged inside the box body, and an air outlet of the fan assembly is communicated with the flue;
the support, the support is located fan subassembly orientation backplate one side, the support is equipped with installation department and fixed part, the installation department with the fan subassembly is connected, the fixed part with the support is close to installation hole site one end is connected.
Optionally, the number of the brackets is two, and the two brackets are respectively and oppositely arranged on two sides of the fan assembly.
Optionally, a flange is arranged at one end of the frame, which is close to the box body, and the flange extends into the mounting hole and is attached to the surface of one side, which is far away from the frame, of the box body;
the fixing part is connected with the flanging.
Optionally, the fixing part and the flanging are mutually attached;
along the length direction of the back plate, the length of the contact surface of the fixing part and the flanging is D, and D is larger than or equal to 20 mm.
Optionally, one end of the bracket close to the rack is bent to one side to form the fixing part.
Optionally, a bending portion is arranged on the fixing portion, and the bending portion extends into the rack and is connected with the inner wall of the rack.
Optionally, the bending part and the inner wall of the rack are mutually attached, and the length of the overlapping surface of the bending part and the rack is H along the height direction of the rack, wherein H is more than or equal to 20 mm.
Optionally, one end of the bracket, which is far away from the mounting portion, is bent towards the direction of the back plate to form a support plate, and the support plate abuts against the back plate.
Optionally, a gap is provided between the mounting portion and the back plate.
Optionally, the installation department is equipped with the constant head tank, be equipped with the fastener on the fan subassembly, the fastener with constant head tank location is connected.
Optionally, the fan assembly extends partially out of the box, and the fan assembly extends out of the box and is located in the rack.
Optionally, the frame is provided with an extension;
the extension part extends into the mounting hole position and is connected with the back plate.
Optionally, the bracket is arranged on two sides of the extension part along the radial direction of the fan assembly.
According to the technical scheme, the mode node with the most low-frequency modes below 400Hz is arranged at the edge position close to one end of the box body, and the vibration energy transfer rate of the mode node is the lowest.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a range hood according to an embodiment of the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a bottom view of FIG. 1;
FIG. 4 is a sectional view taken along line A-A of FIG. 3;
FIG. 5 is a partial enlarged view of the portion B in FIG. 4;
FIG. 6 is an exploded view of FIG. 1;
FIG. 7 is a schematic view of a rack structure according to an embodiment of the present invention;
FIG. 8 is a graph of fan noise detection spectra according to an embodiment of the present invention;
FIG. 9 is a schematic view of a right bracket according to an embodiment of the present invention;
FIG. 10 is a front view of FIG. 9;
FIG. 11 is a left side view of FIG. 9;
FIG. 12 is a bottom view of FIG. 9;
FIG. 13 is a schematic view of a left bracket according to an embodiment of the present invention;
FIG. 14 is a front view of FIG. 13;
FIG. 15 is a left side view of FIG. 13;
fig. 16 is a bottom view of fig. 13.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | |
11 | |
| 12 | |
20 | |
| 21 | |
22 | |
| 30 | |
31 | Flanging |
| 32 | |
40 | |
| 41 | Fixing |
42 | Bent |
| 43 | |
44 | |
| 45 | |
46 | |
| 47 | Locating slot |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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 addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a range hood according to an embodiment of the present invention, and fig. 2 is a front view of fig. 1, the present invention provides a range hood, including: the device comprises a frame 30, wherein a flue is arranged inside the frame 30; the refrigerator comprises a box body 20, wherein the upper end of the box body 20 is provided with a mounting hole 21, a rack 30 is arranged outside the mounting hole 21, and the box body 20 is provided with a back plate 22; the fan assembly 10 is arranged inside the box body 20, and an air outlet of the fan assembly 10 is communicated with the flue; support 40, support 40 locates fan subassembly 10 orientation backplate 22 one side, support 40 is equipped with installation department 46 and fixed part 41, installation department 46 with fan subassembly 10 is connected, fixed part 41 with support 40 is close to installation hole site 21 one end is connected. The bracket 40 is used for connecting the fan assembly 10 and the frame 30.
Noise, Vibration and Harshness (Noise, Vibration and Harshness, abbreviated as NVH) modal analysis can be used for analyzing the Noise and Vibration states of the motor during operation, and the NVH modal node refers to the position with the lowest modal shape. It is right when range hood carries out modal node analysis, to the following low frequency noise of most 400Hz, frame 30 is close to box 20 one end edge position and is fan assembly 10 vibration system's modal node position, and the vibration energy transmission efficiency at this position is minimum, consequently, this scheme will fixed part 41 of support 40 with frame 30 is close to box 20 one end edge and is connected, fan assembly 10 passes through installation department 46 with frame 30 is connected, because fixed part 41 is located NVH modal node the vibration energy transmission efficiency of fixed part 41 department is minimum, and then thoroughly eradicates the low frequency abnormal sound.
The installation part 46 can adopt the mode of welding, riveting or screw connection with the fan subassembly 10 is connected, the support 40 is located the fan subassembly 10 with between the backplate 22, when reducing the low frequency abnormal sound of fan subassembly 10, play and support and installation the effect of fan subassembly 10.
The bracket 40 may be connected to the fan assembly 10 by welding, riveting or screwing, and the bracket 40 may have a polyhedral structure, such that one surface is connected to the fan assembly 10, and the other surface is connected to the frame 30.
Referring to fig. 3, fig. 3 is a bottom view of fig. 1, the fan assembly 10 includes a motor and a volute 11 disposed outside the motor, an air outlet of the fan assembly 10 is disposed on the volute 11, an air inlet of the fan assembly 10 is disposed away from the back plate 22, a fan mounting portion 12 may be disposed at the air outlet, and when the air outlet extends into the rack 30, the volute 11 is connected with an internal structure of the rack 30 through the fan mounting portion 12, so as to fix the fan assembly 10.
The box body 20 is used for installing the fan assembly 10 and simultaneously forming a relatively semi-closed cavity, so that smoke enters the box body 20 and is conveyed to the air outlet under the action of the fan assembly 10. The mounting hole 21 on the box 20 is used for mounting the rack 30 and the volute 11, and the design of the mounting hole 21 may adopt the prior art.
The fixed part 41 is connected with one end of the frame 30 close to the box body 20, so that the transfer rate of vibration energy generated in the operation process of the fan assembly 10 is greatly reduced, and the effect of fundamentally reducing low-frequency abnormal sound generated by the fan assembly 10 is realized.
Referring to fig. 4 and 5, fig. 4 is a sectional view taken along the direction of a-a in fig. 3, fig. 5 is a partially enlarged view of a portion B in fig. 4, an installation position of the bracket 40 on the fan assembly 10 may be determined according to an installation position of the fan in the box 20, for convenience of installation, in this embodiment, optionally, the number of the brackets 40 is two, the two brackets 40 are respectively oppositely disposed on two sides of the fan assembly 10, and the brackets 40 fix and support the fan assembly 10 from the two sides of the fan assembly 10, so that a transfer rate of vibration noise generated by the fan assembly 10 is minimized.
Optionally in this embodiment, installation department 46 is equipped with constant head tank 47, be equipped with the fastener on the fan subassembly 10, the fastener with constant head tank 47 location is connected, through setting up constant head tank 47, can conveniently realize fan subassembly 10 with installation department 46's quick location, the fastener can be the bolt, will the bolt runs through fan subassembly 10's spiral case 11 and location are connected in the constant head tank 47.
Referring to fig. 6 and 7, fig. 6 is an exploded view of fig. 1, and fig. 7 is a schematic view of a rack structure in an embodiment of the present invention, a flange 31 is disposed at one end of the rack 30 close to the box body 20, and the flange 31 extends into the mounting hole 21 and is attached to a side surface of the box body 20 away from the rack 30; the fixing portion 41 is connected to the flange 31. When the installation, fixed part 41 orientation turn-ups 31 side surface laminating is in turn-ups 31 deviates from on the frame 30 side end face, so that fixed part 41 with turn-ups 31 laminates each other, can be through riveting or bolted connection's mode, will box 20, turn-ups 31 and fixed part 41 orientation turn-ups 31 side surface interconnect.
Because the turned-over edge 31 extends into the mounting hole 21, when the turned-over edge 31 is attached to the inner wall of the box body 20, the relative movement between the rack 30 and the box body 20 can be limited, so that the stability of the rack 30 is improved, the rack 30 is prevented from shifting, meanwhile, the rack 30 and the box body 20 can be connected with each other conveniently, and the convenience of assembly is improved.
Under the action of the turned-over edge 31, the dynamic stiffness of the connecting part of the rack 30 and the box body 20 is greatly enhanced, so that the deformation resistance of the connecting part of the rack 30, the bracket 40 and the box body 20 is stronger, the stability of the rack 30 is further improved, and the noise caused by dislocation of the rack 30 is avoided.
When the rack 30 is fixed, the flanges 31 may be respectively disposed at two opposite edge portions of the rack 30, so that the rack 30 is symmetrically fixed by the brackets 40 from two sides, so as to improve the stability of the rack 30, and meanwhile, the problem of low-frequency noise of the fan assembly 10 is solved by using the brackets 40 on the NVH modal nodes at the contact portions of the two sides of the rack 30 and the box body 20; an extension 32 may be provided on the chassis 30 such that the extension 32 is positioned between the two brackets 40, and the extension 32 and the housing 20 are connected to each other to improve the stability of the fan assembly 10.
Because turn-ups 31 laminating is in on the box 20 inner wall, can be right the frame 30 with box 20 connection site seals, avoids the frame 30 with 12 smoke leakage appear in box 20 fan installation department.
Referring to fig. 6, in the present embodiment, optionally, the fixing portion 41 and the flange 31 are attached to each other, and along the length direction of the back plate 22, the length of the contact surface between the fixing portion 41 and the flange 31 is D, and D is greater than or equal to 20 mm. The turn-ups 31 is attached to the inner wall of the box body 20, one end of the rack 30 is far away from the turn-ups 31 and extends along the length direction (shown as the direction F in fig. 2) of the back plate 22, the mounting portion 46 of the support 40 is connected with the fan assembly 10, the other end of the support 40 extends along the length direction of the back plate 22, and the fixing portion 41 is located at one end, far away from the fan assembly 10, of the support 40.
The fixed part 41 with turn-ups 31 deviates from box 20 a side end face is laminated each other, fixed part 41 with turn-ups 31 contact surface length D can select 10mm, 15mm or 20mm etc. through adopting this numerical range, can guarantee fixed part 41 with under the prerequisite of the biggest dynamic stiffness of box 20 junction, make fan assembly 10's vibration energy transfer rate is the minimum state as far as possible.
Referring to fig. 8, fig. 8 is a fan noise detection spectrogram in an embodiment of the present invention, taking D =10mm as an example, where a "-" line is a detection result of different spectral noises of the range hood in a conventional installation manner, where a "━" line is a detection result of different spectral noises of the range hood in the present scheme, as seen from fig. 7, by adopting the conventional scheme, a detection result of low-frequency noise with a frequency of 200Hz is displayed as 60 db, and in the present scheme, a detection result of low-frequency noise with a frequency of 200Hz is lower than 50 db, so that by adopting the installation manner in the present scheme, an improvement effect on low-frequency noise, especially low-frequency noise with a frequency of 200Hz, is very obvious.
Referring to fig. 3 and fig. 6, in order to facilitate the connection between the fixing portion 41 and the flange 31, in an embodiment of the invention, one end of the bracket 40 near the rack 30 is bent to one side to form the fixing portion 41, and the fixing portion 41 is connected to the flange 31. The fixing portion 41 and the mounting portion 46 form a bending structure to facilitate the mutual connection of the box body 20, the flange 31 and the fixing portion 41. By adopting the bent structure of the fixing part 41, the bracket 40 has good structural rigidity and better impact resistance and falling prevention performance.
Referring to fig. 3 and fig. 6, in an embodiment of the present invention, a bending portion 42 is disposed on the fixing portion 41, and the bending portion 42 extends into the frame 30 and is connected to the inner wall of the frame 30. The bent portion 42 and the frame 30 are attached to each other at an end edge close to the box body 20, so that the bent portion 42 and the frame 30 are connected to each other.
By arranging the bending part 42, the frame 30 and the bracket 40 can be connected with each other conveniently. Because the frame 30 is close to box 20 one end is NVH mode node, through adopting bend 42 with frame 30 interconnect can reduce the vibration energy transmission efficiency of fan subassembly 10, reduce the low frequency abnormal sound that produces when fan subassembly 10 moves.
Referring to fig. 6, in the present embodiment, optionally, along the height direction (the N direction shown in fig. 2) of the frame 30, the length of the overlapping surface of the bending portion 42 and the frame 30 is H, and H is greater than or equal to 20 mm. The height direction of the rack 30 is the direction extending from the end close to the fan assembly 10 to the end of the rack 30 far away from the fan.
The bending part 42 extends into the inside of the rack 30 and is partially overlapped with the inner wall of the rack 30, the length of the overlapped surface can be 10mm, 15mm or 20mm, please refer to fig. 8, for example, H =10mm, wherein a "-" line is a detection result of different spectrum noises of the range hood under the existing common installation mode, wherein a "━" line is a detection result of different spectrum noises of the range hood according to the scheme, as can be seen from fig. 8, the existing scheme is adopted, the detection result of low-frequency noise with the frequency of 200Hz is displayed as 60 decibels, and in the scheme, the detection result of the low-frequency noise with the frequency of 200Hz is lower than 50 decibels, so that the installation mode in the scheme is adopted, and the improvement effect of the low-frequency noise, particularly the low-frequency noise with the frequency of 200Hz, is.
In this embodiment, D =10mm and H =10mm may be simultaneously selected, so that the vibration energy generated by the fan assembly 10 is effectively reduced while the connection portion between the rack 30 and the bracket 40 has good structural rigidity.
When the support 40 is symmetrically arranged on both sides of the fan assembly 10, the support 40 may include a left support 44 and a right support 45, and the left support 44 and the right support 45 are respectively arranged on both sides of the fan assembly 10 and respectively arranged on NVH modal nodes on both sides of the fan assembly 10.
Referring to fig. 9, fig. 9 is a schematic structural diagram of a right bracket according to an embodiment of the present invention, when installed, the right bracket 45 is connected to the right side of the fan assembly 10, the fixing portion 41 is connected to the flange 31 of the rack 30 near the right bracket 45, and meanwhile, the bending portion 42 extends into the rack 30 and is connected to the inner wall of the rack 30, so as to fix the right side of the fan assembly 10.
Referring to fig. 10, 11 and 12, fig. 10 is a front view of fig. 9, fig. 11 is a left view of fig. 9, and fig. 12 is a bottom view of fig. 9, the fixing portions 41 may be symmetrically disposed on two sides of the right bracket 45, wherein one side of the fixing portion 41 is connected to the flange 31, and the fixing portion 41 is adopted to improve the structural rigidity of the right bracket 45.
Referring to fig. 13, fig. 13 is a schematic structural diagram of a left bracket according to an embodiment of the present invention, when installed, the left bracket 44 is connected to the left side of the fan assembly 10, the fixing portion 41 on the left bracket 44 is connected to the flange 31 on the left side of the rack 30, and the left bracket 44 and the right bracket 45 are symmetrically arranged.
Referring to fig. 14, 15 and 16, fig. 14 is a front view of fig. 13, fig. 15 is a left view of fig. 13, fig. 16 is a bottom view of fig. 13, the left bracket 44 and the right bracket 45 are symmetrical in structure, the fixing portion 41 of the left bracket 44 is connected to the flange 31 of the left side of the rack 30, and the bending portion 42 of the left bracket 44 extends into the left side of the rack 30 and is connected to the inner wall of the rack 30.
Because the left support 44 and the right support 45 are respectively arranged on the NVH modal nodes at two sides of the fan assembly 10, the transfer rate of the vibration energy generated by the fan assembly 10 is lowest between the left support 44 and the right support 45, and the effect of reducing low-frequency noise is further realized.
In order to further improve the structural rigidity of the left bracket 44 and the right bracket 45, in this embodiment, optionally, one end of the bracket 40 away from the mounting portion 46 is bent to form a support plate 43 toward the inner wall of the box body 20, and the support plate 43 abuts against the inner wall of the box body 20. The support plate 43 supports the support 40, so that the structural rigidity of the support 40 is further improved, the deformation resistance of the support 40 is better, meanwhile, one end, far away from the installation part 46, of the support plate 43 is an NVH mode node position on two sides of the fan assembly 10, the support plate 43 can support the support 40, vibration energy cannot be transmitted, and low-frequency abnormal sound cannot be generated.
With continued reference to fig. 1 and 3, in an embodiment of the present invention, a gap is formed between the mounting portion 46 and the back plate 22, and the mounting portion 46 is connected to the fan assembly 10 only and is not connected to the back plate 22, so that the bracket 40 is connected to the rack 30 only at the node of the NVH mode, which further helps to prevent the transmission of the vibration energy of the fan assembly 10.
With reference to fig. 1 and fig. 3, in an embodiment of the present invention, the fan assembly 10 partially extends out of the box body 20 and is partially located in the rack 30, when the fan assembly 10 operates, smoke enters the box body 20, and because the fan assembly 10 is partially located in the rack 30, a problem that an internal space of the box body 20 is too small due to the fan assembly 10 occupying the internal space of the box body 20 can be avoided, thereby avoiding a wind pressure loss and contributing to improving an operating efficiency of the fan assembly 10.
In this embodiment, optionally, the support 40 is respectively disposed at two sides of the extension portion 32 of the support 40 along the radial direction of the fan assembly 10, and when the support 40 is connected to the rack 30, the fan assembly 10 is partially located in the rack 30, so that when the fan assembly 10 operates, the wind resistance is relatively small, which is beneficial to improving the operating efficiency of the range hood.
Because the support 40 is arranged along the radial direction of the fan assembly 10, when the fan assembly 10 operates, the support 40 can generate a stable supporting effect on the fan assembly 10, and the vibration energy on the support 40 is unbalanced.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (12)
1. A range hood, comprising:
the device comprises a rack, wherein a flue is arranged inside the rack;
the upper end of the box body is provided with a mounting hole position, the rack is arranged outside the mounting hole position, and the box body is provided with a back plate;
the fan assembly is arranged inside the box body, and an air outlet of the fan assembly is communicated with the flue;
the bracket is arranged on one side, facing the back plate, of the fan assembly, and is provided with an installation part and a fixed part, the installation part is connected with the fan assembly, one end, close to the box body, of the rack is provided with a flanging, and the flanging extends into the installation hole and is attached to the surface, facing away from the rack, of one side of the box body;
the fixing part is connected with the flanging, and the fixing part is attached to the flanging.
2. The range hood of claim 1, wherein the number of the brackets is two, and the two brackets are respectively oppositely arranged at two sides of the fan assembly.
3. The range hood according to claim 1, wherein along the length direction of the back plate, the length of the contact surface of the fixing part and the flange is D, and D is more than or equal to 20 mm.
4. The range hood according to claim 1, wherein one end of the bracket close to the frame is bent to one side to form the fixing portion.
5. The range hood according to claim 1 or 2, wherein the fixing portion is provided with a bending portion, and the bending portion extends into the frame and is connected with the inner wall of the frame.
6. The range hood according to claim 5, wherein the bending portion is attached to the inner wall of the frame, and the length of the overlapping surface of the bending portion and the frame along the height direction of the frame is H, wherein H is not less than 20 mm.
7. The range hood of claim 1 or 2, wherein one end of the bracket away from the mounting portion is bent towards the direction of the back plate to form a support plate, and the support plate abuts against the back plate.
8. The range hood of claim 1 or 2, wherein a gap is provided between the mounting portion and the back plate.
9. The range hood of claim 1 or 2, wherein the mounting portion is provided with a positioning groove, the fan assembly is provided with a fastener, and the fastener is connected with the positioning groove in a positioning manner.
10. The range hood of claim 1 or 2, wherein the fan assembly extends partially out of the housing, and the fan assembly extends partially out of the housing and is positioned within the frame.
11. A range hood according to claim 1 or 2 wherein the frame is provided with an extension;
the extension part extends into the mounting hole position and is connected with the back plate.
12. The range hood of claim 11 wherein the bracket is disposed on both sides of the extension in a radial direction of the fan assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910822285.XA CN110513741B (en) | 2019-08-29 | 2019-08-29 | Smoke exhaust ventilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910822285.XA CN110513741B (en) | 2019-08-29 | 2019-08-29 | Smoke exhaust ventilator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110513741A CN110513741A (en) | 2019-11-29 |
| CN110513741B true CN110513741B (en) | 2021-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910822285.XA Active CN110513741B (en) | 2019-08-29 | 2019-08-29 | Smoke exhaust ventilator |
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| CN (1) | CN110513741B (en) |
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| CN113757739B (en) * | 2021-06-25 | 2022-11-25 | 华帝股份有限公司 | Communication method of central flue system and central flue system adopting same |
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| IT1304133B1 (en) * | 1998-11-25 | 2001-03-07 | Faber Spa | DEVICE FOR SOUNDPROOFING HOODS AND SIMILAR. |
| KR20040025043A (en) * | 2002-09-18 | 2004-03-24 | 주식회사 엑타 | exhaust chamber moise decrease structure |
| CN101254382B (en) * | 2008-04-02 | 2011-01-19 | 王君 | Oil smoke cleanse extraction device |
| JP2012127521A (en) * | 2010-12-13 | 2012-07-05 | Mitsubishi Electric Corp | Duct device and heating cooker |
| CN102183369A (en) * | 2011-03-19 | 2011-09-14 | 重庆长安汽车股份有限公司 | Noise tester of engine belt tightener |
| CN102298926A (en) * | 2011-07-06 | 2011-12-28 | 吉林大学 | Multimedia active silencing apparatus of smoke ventilator |
| CN104654398A (en) * | 2013-11-25 | 2015-05-27 | 西安立元智能科技有限公司 | Novel easy-cleaning and non-heat-absorption smoke ventilator arranged in ceiling or tilting manner |
| EP3231082A1 (en) * | 2014-12-12 | 2017-10-18 | Valeo Air Management UK Limited | An electric supercharger and method of protecting an electric supercharger from high temperatures |
| CN107166458A (en) * | 2017-04-24 | 2017-09-15 | 杭州老板电器股份有限公司 | A kind of lampblack absorber of active active noise reduction |
| CN109595654B (en) * | 2017-09-30 | 2024-01-16 | 宁波方太厨具有限公司 | Near-suction type range hood |
| CN208536090U (en) * | 2018-07-10 | 2019-02-22 | 佛山市顺德区合捷电器实业有限公司 | Noise-reducing components and smoke exhaust ventilator |
| CN208871691U (en) * | 2018-08-13 | 2019-05-17 | 刘浙明 | A kind of noise reduction air duct |
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