CN213872825U - Volute of range hood - Google Patents
Volute of range hood Download PDFInfo
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- CN213872825U CN213872825U CN202022896468.7U CN202022896468U CN213872825U CN 213872825 U CN213872825 U CN 213872825U CN 202022896468 U CN202022896468 U CN 202022896468U CN 213872825 U CN213872825 U CN 213872825U
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- air
- volute
- air outlet
- noise reduction
- range hood
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Abstract
The utility model discloses a range hood spiral case, it includes: the volute body is provided with an air inlet and an air outlet, a volute tongue is formed at the position, close to the air outlet, of the inner wall of the volute body, the noise reduction body is fixed on the inner wall of the volute tongue, the noise reduction body is provided with an air outlet face facing one side of the air outlet and an air return face facing one side of an inner cavity of the volute body, an air guide groove extending along the air outlet direction is formed in the air outlet face, the number of the air guide grooves is multiple, the air guide grooves are arranged at intervals along the axial direction of the volute body, and a plurality of noise reduction holes are uniformly distributed in the air return face. The centrifugal impeller drives the air to flow, a part of air is divided from the volute tongue and is exhausted to the outside through the air outlet, the other part of air flow flows back to the volute body, when the air passes through the noise reduction body, the air guide groove on the air outlet surface can dredge the air flow at the air outlet, the turbulence of the air outlet can be reduced, the air exhaust efficiency is improved, and the noise reduction hole on the air return surface can reduce the noise caused by the impact of the air return on the volute.
Description
Technical Field
The utility model relates to a range hood's field, in particular to range hood spiral case.
Background
Most of the existing domestic range hoods utilize a centrifugal volute to generate negative pressure smoke exhaust, but people generally like a stir-frying cooking mode, so that the existing manufacturers mainly produce range hoods with large air volume and large air pressure, and the noise problem is caused therewith, which often troubles users and brings bad user experience. The noise generated by the existing centrifugal volute is mainly concentrated near the volute tongue, particularly turbulent airflow is generated at the volute tongue, and other air flowing back to the volute can collide the bottom of the volute tongue to bring vibration and noise.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a range hood spiral case to solve one or more technical problem that exist among the prior art, provide a profitable selection or create the condition at least.
The technical scheme adopted for solving the technical problems is as follows:
a range hood volute, comprising: the noise reduction device comprises a volute body and a noise reduction body, wherein the volute body is provided with an air inlet and an air outlet, a volute tongue is formed at a position, close to the air outlet, of the inner wall of the volute body, the noise reduction body is fixed to the inner wall of the volute tongue, the noise reduction body is provided with an air outlet surface facing one side of the air outlet and an air return surface facing one side of an inner cavity of the volute body, the air return surface and the air outlet surface are connected in an included angle, an air guide groove extending along the air outlet direction is formed in the air outlet surface, the air guide grooves are multiple in number and are arranged at intervals along the axial direction of the volute body, and a plurality of noise reduction holes are uniformly distributed in the air return surface.
The utility model has the advantages that: when the volute is used, the volute body is provided with the rotating centrifugal impeller, the centrifugal impeller drives air to flow, a part of air is divided from the volute tongue and is exhausted to the outside through the air outlet, the other part of air flow flows back to the volute body, when the air passes through the noise reduction body, the air guide groove on the air outlet surface can dredge the air flow at the air outlet, the turbulence of the air outlet can be reduced, the air exhaust efficiency is improved, the noise reduction hole on the air return surface can reduce noise caused by the impact of the air returning to the volute, in addition, the rigidity of the volute tongue is also enhanced, and the vibration of the volute is reduced.
As a further improvement of the technical scheme, an included angle between the air return surface and the air outlet surface is 20-30 degrees. The smaller the included angle between the air return surface and the air outlet surface is, the more the wind resistance can be reduced, but the too small included angle can reduce the rigidity of the structure, and the included angle between the air return surface and the air outlet surface is controlled to be in the range of 20-30 degrees, which is most suitable for the embodiment.
As a further improvement of the technical scheme, the distance between two adjacent air guide grooves is 5-15 mm.
The wind guide grooves mainly play a role of guiding wind, and similarly, the smaller the distance, the lower the structural rigidity.
As a further improvement of the technical scheme, the diameter of the noise reduction hole is 2mm-6mm, and the depth of the noise reduction hole is 5mm-25 mm. The noise reduction holes mainly play a role in sound absorption.
As a further improvement of the technical scheme, a connecting concave cambered surface is arranged between the air return surface and the air outlet surface, the cross section of the volute tongue is in an arc convex shape, and the connecting concave cambered surface is connected with the inner wall of the volute tongue in a matching manner.
The noise reduction body is favorably installed and fixed, when the connecting concave cambered surface is sleeved with the volute tongue in a matching mode, the installation posture and the angle of the noise reduction body are also fixed, the noise reduction body does not need to be adjusted, and the noise reduction body is designed when leaving a factory.
As a further improvement of the technical scheme, the noise reduction body is connected with the inner wall of the volute tongue through pasting or screws.
As a further improvement of the technical scheme, the noise reduction body is integrally formed by plastic. The body of the noise reduction body has a certain noise reduction effect, and the plastic can buffer the airflow.
As a further improvement of the technical scheme, the volute body comprises a front end plate, a rear end plate and side enclosing plates, the side enclosing plates are respectively connected with the outer peripheral edges of the front end plate and the rear end plate, the air outlets are formed at two ends of the side enclosing plates and between the front end plate and the rear end plate, and the air inlets are formed in the front end plate and the rear end plate.
This allows the volute to be made double entry.
As a further improvement of the technical scheme, the air outlet is sleeved with a fixed sleeve. The fixed sleeve can improve the structural strength of the air outlet and is convenient for the connection of the air outlet and a peripheral pipeline.
Drawings
The present invention will be further explained with reference to the drawings and examples;
fig. 1 is a schematic view of an internal structure of an embodiment of a volute of a range hood according to the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
fig. 3 is a schematic structural view of an embodiment of the volute of the range hood provided by the present invention;
fig. 4 is a schematic structural view of an air outlet surface of an embodiment of the noise reducer of the present invention;
fig. 5 is a schematic structural view of a return air surface of an embodiment of the noise reducer according to the present invention;
fig. 6 is a schematic end-side structure view of an embodiment of the noise reducer according to the present invention.
Detailed Description
This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, if words such as "a plurality" are used, the meaning is one or more, the meaning of a plurality of words is two or more, and the meaning of more than, less than, more than, etc. is understood as not including the number, and the meaning of more than, less than, more than, etc. is understood as including the number.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
Referring to fig. 1 to 6, the volute of the range hood of the present invention is provided with the following embodiments:
the volute of the range hood of the embodiment includes a volute body 100 and a noise reduction body 200, wherein the volute body 100 includes a front end plate 140, a rear end plate 150 and a side wall plate 160, the side wall plate 160 is respectively connected with the outer peripheries of the front end plate 140 and the rear end plate 150, an air outlet 120 is formed between two ends of the side wall plate 160, the front end plate 140 and the rear end plate 150 are both provided with an air inlet 110, a volute tongue 130 is formed at a position of the inner wall of the volute body 100, which is close to the air outlet 120, and the volute tongue 130 is formed by bending the side wall plate 160.
The noise reduction body 200 is fixed on the inner wall of the volute tongue 130, the noise reduction body 200 is provided with an air outlet surface 210 facing one side of the air outlet 120 and an air return surface 220 facing one side of the inner cavity of the volute body 100, the air return surface 220 and the air outlet surface 210 form an included angle, the included angle between the air return surface 220 and the air outlet surface 210 is 20-30 degrees, the smaller the included angle between the air return surface 220 and the air outlet surface 210 is, the more the wind resistance can be reduced, but the too small the structural rigidity can be reduced, and the included angle between the air return surface 220 and the air outlet surface 210 is controlled to be most suitable within the range of 20-30 degrees in the embodiment.
The air outlet surface 210 is provided with a plurality of air guide grooves 211 extending along the air outlet direction, the plurality of air guide grooves 211 are arranged at intervals along the axial direction of the volute 100, the distance between every two adjacent air guide grooves 211 is 5-15 mm, a plurality of noise reduction holes 221 are uniformly distributed on the air return surface 220, the diameter of each noise reduction hole 221 is 2-6 mm, the hole depth is 5-25 mm, and the noise reduction holes 221 mainly play a role in sound absorption.
Further, a connecting concave arc surface 230 is arranged between the air return surface 220 and the air outlet surface 210, the cross section of the volute tongue 130 is in an arc convex shape, the connecting concave arc surface 230 is connected with the inner wall of the volute tongue 130 in a matching manner, so that the noise reduction body 200 is favorably installed and fixed, when the connecting concave arc surface 230 is sleeved with the volute tongue 130 in a matching manner, the installation posture and the angle of the noise reduction body 200 are fixed, the noise reduction body 200 does not need to be adjusted, and the noise reduction body is designed when leaving a factory.
The noise reduction body 200 in this embodiment is integrally formed of plastic. The body of the noise reduction body 200 has a certain noise reduction effect, and the plastic can buffer the airflow. And the noise reduction body 200 is connected with the inner wall of the volute tongue 130 by gluing or screws. In other embodiments, the noise reducing body 200 and the side gusset 160 may be integral.
When the volute is used, the volute 100 is provided with the rotating centrifugal impeller, the centrifugal impeller drives air to flow, a part of air which is divided from the volute tongue 130 is discharged to the outside through the air outlet 120, the other part of air flows back into the volute 100, when the air passes through the noise reduction body 200, the air guide groove 211 on the air outlet surface 210 can dredge the air flow of the air outlet 120, the turbulence of the air outlet 120 can be reduced, the air exhaust efficiency is improved, the noise reduction holes 221 on the air return surface 220 can reduce noise caused by impact of the air returning to the volute, in addition, the rigidity of the volute tongue 130 is enhanced, and the vibration of the volute is reduced.
In addition, the air outlet 120 is sleeved with a fixing sleeve 170. The fixing sleeve 170 may improve the structural strength of the air outlet 120, and facilitate the connection between the air outlet 120 and a peripheral pipe.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the details of the embodiments shown, but is capable of various modifications and substitutions without departing from the spirit of the invention.
Claims (9)
1. A range hood volute, its characterized in that: it includes:
the volute body (100) is provided with an air inlet (110) and an air outlet (120), and a volute tongue (130) is formed on the inner wall of the volute body (100) close to the air outlet (120);
the noise reduction body (200) is fixed on the inner wall of the volute tongue (130), the noise reduction body (200) is provided with an air outlet surface (210) facing one side of the air outlet (120) and an air return surface (220) facing one side of the inner cavity of the volute body (100), the air return surface (220) is connected with the air outlet surface (210) in an included angle mode, an air guide groove (211) extending along the air outlet direction is formed in the air outlet surface (210), the air guide grooves (211) are multiple in number and multiple in number, the air guide grooves (211) are arranged at intervals along the axial direction of the volute body (100), and a plurality of noise reduction holes (221) are uniformly distributed in the air return surface (220).
2. The range hood volute of claim 1, wherein:
the included angle between the air return surface (220) and the air outlet surface (210) is 20-30 degrees.
3. The range hood volute of claim 1, wherein:
the distance between two adjacent air guide grooves (211) is 5-15 mm.
4. The range hood volute of claim 1, wherein:
the diameter of the noise reduction hole (221) is 2mm-6mm, and the depth of the hole is 5mm-25 mm.
5. The range hood volute of claim 1, wherein:
a connecting concave cambered surface (230) is arranged between the air return surface (220) and the air outlet surface (210), the cross section of the volute tongue (130) is in an arc convex shape, and the connecting concave cambered surface (230) is connected with the inner wall of the volute tongue (130) in a matching manner.
6. The range hood volute of claim 1, wherein:
the noise reduction body (200) is connected with the inner wall of the volute tongue (130) through pasting or screws.
7. The range hood volute of claim 1, wherein:
the noise reduction body (200) is integrally formed by plastic.
8. The range hood volute of claim 1, wherein:
the volute body (100) comprises a front end plate (140), a rear end plate (150) and side wall plates (160), wherein the side wall plates (160) are connected with the outer peripheries of the front end plate (140) and the rear end plate (150) respectively, the air outlet (120) is formed in the two ends of the side wall plates (160), between the front end plate (140) and the rear end plate (150), and the air inlets (110) are formed in the front end plate (140) and the rear end plate (150).
9. The range hood volute of claim 8, wherein:
the air outlet (120) is sleeved with a fixed sleeve (170).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022896468.7U CN213872825U (en) | 2020-12-04 | 2020-12-04 | Volute of range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022896468.7U CN213872825U (en) | 2020-12-04 | 2020-12-04 | Volute of range hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213872825U true CN213872825U (en) | 2021-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022896468.7U Active CN213872825U (en) | 2020-12-04 | 2020-12-04 | Volute of range hood |
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| CN (1) | CN213872825U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023103123A1 (en) * | 2021-12-08 | 2023-06-15 | Tcl空调器(中山)有限公司 | Volute structure, air duct assembly and air conditioner |
| WO2023103121A1 (en) * | 2021-12-08 | 2023-06-15 | Tcl空调器(中山)有限公司 | Volute casing, air passage assembly, and air conditioner |
-
2020
- 2020-12-04 CN CN202022896468.7U patent/CN213872825U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023103123A1 (en) * | 2021-12-08 | 2023-06-15 | Tcl空调器(中山)有限公司 | Volute structure, air duct assembly and air conditioner |
| WO2023103121A1 (en) * | 2021-12-08 | 2023-06-15 | Tcl空调器(中山)有限公司 | Volute casing, air passage assembly, and air conditioner |
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