CN215333524U - Impeller, fan and bathroom heater - Google Patents
Impeller, fan and bathroom heater Download PDFInfo
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- CN215333524U CN215333524U CN202121168089.4U CN202121168089U CN215333524U CN 215333524 U CN215333524 U CN 215333524U CN 202121168089 U CN202121168089 U CN 202121168089U CN 215333524 U CN215333524 U CN 215333524U
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Abstract
The utility model discloses an impeller, a fan and a bath heater, wherein the impeller comprises: the edge of the bottom surface of the hub forms a circular ring piece; a wheel disc disposed opposite the hub; the blades are arranged between the hub and the wheel disc at intervals and are uniformly distributed along the circumferential direction of the hub, an air channel is formed between any two adjacent blades, and the air channel is provided with an air inlet side and an air outlet side; the blades comprise inner sides and outer sides, the inner sides are arranged on the air inlet sides of the air channels, and the outer sides are arranged on the air outlet sides of the air channels; the outer side edge of each blade and the excircle of the circular ring piece are intersected at an outer intersection point, an excircle tangent line taking the outer intersection point as a tangent point and the outer side edge form a first included angle alpha, and the angle of the first included angle is not less than 40 degrees and not more than 80 degrees, so that the airflow of the air duct uniformly rotates, and the effect of reducing noise is achieved.
Description
Technical Field
The utility model relates to the technical field of household appliances, in particular to an impeller, a fan and a bath heater.
Background
The bathroom heater is a household heating device and is mainly used for heating air in a bathroom. The bath heater has the functions of heating, ventilation, air exhaust, illumination, decoration and the like.
The bathroom heater comprises other components such as a fan, a lighting device and the like. The fan is the source of generating noise, and because volute tongue structural design in traditional fan is simple, and closed volute tongue structure is mostly, the high-speed and high-pressure air current that the impeller sent out strikes on the volute tongue, and periodic pressure and speed pulsation will appear in volute tongue department air, produce higher pneumatic noise, the polluted environment, to products such as bathroom heater, air conditioner that require higher to the noise, the pneumatic noise that the air near the volute tongue produced still can lead to equipment to have obvious squeaking, reduces the sound quality.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an impeller, a fan and a bathroom heater, and aims to solve the technical problems that the traditional fan is high in noise and affects the product quality.
To achieve the above object, the present invention provides an impeller comprising: the edge of the bottom surface of the hub forms a circular ring piece; a wheel disc disposed opposite the hub; the blades are arranged between the hub and the wheel disc at intervals and are uniformly distributed along the circumferential direction of the hub, an air channel is formed between any two adjacent blades, and the air channel is provided with an air inlet side and an air outlet side; the blades comprise inner sides and outer sides, the inner sides are arranged on the air inlet sides of the air channels, and the outer sides are arranged on the air outlet sides of the air channels; the outer side edge of each blade and the excircle of the circular ring piece are intersected at an outer intersection point, an excircle tangent line taking the outer intersection point as a tangent point and the outer side edge form a first included angle alpha, and the angle of the first included angle is more than or equal to 40 degrees and less than or equal to 80 degrees.
Further, a plurality of the outer intersections are distributed on the outer circle of the circular ring member at equal intervals.
Furthermore, a connecting point is formed at the connecting position of the outer side edge of each blade and the wheel disc, and a plurality of connecting points are distributed on the wheel disc at equal intervals.
Further, a gap exists between the projections formed by any two adjacent blades on the surface of the circular ring piece.
Further, each of the blades comprises a first arc-shaped edge and a second arc-shaped edge, and the second arc-shaped edge is abutted to the surface of the circular ring piece; and a gap exists between the projection of the first arc-shaped edge on the surface of the ring piece and the second arc-shaped edge.
Further, the projections formed by the outer side edges of the plurality of blades on the surface of the circular ring piece are positioned on the same circle; the projections of the inner side edges of the plurality of blades on the surface of the circular ring piece are positioned on the same circle.
Furthermore, the inner side edge of each blade and the inner circle of the circular ring part are intersected at an inner intersection point, a tangent line of the inner circle and the inner side edge form a second included angle beta by taking the inner intersection point as a tangent point, and the angle range of the second included angle is more than or equal to 30 degrees and less than or equal to 55 degrees.
Further, the angle of the first included angle is more than or equal to 58 degrees and less than or equal to 60 degrees; the angle range of the second included angle is more than or equal to 45 degrees and less than or equal to 50 degrees.
In order to achieve the above object, the present invention further provides a fan, including the impeller described above.
Further, the fan also comprises a shell, wherein the shell comprises a cavity and an air port which are communicated with each other; the noise reduction volute tongue is arranged at the joint of the cavity and the air port; the impeller is arranged in the cavity, and the air duct of the impeller is communicated to the cavity.
Further, the noise reduction volute tongue comprises a bending piece, and the bending piece is provided with sound absorption holes arranged in a matrix mode.
In order to achieve the above object, the present invention further provides a bathroom warmer, comprising the blower as described above.
The technical effect of the utility model is that the impeller, the fan and the bathroom heater are provided, and the air flow of the air duct uniformly rotates by adjusting the inclination angle of the blades, so that the effect of reducing noise is achieved. Furthermore, a plurality of sound absorbing holes are formed in the bending piece of the noise reduction volute tongue of the fan and used for adjusting the flowing state of the noise reduction volute tongue near the bending piece, so that eddy current is reduced, flowing noise of the fan is reduced, and working efficiency of the bathroom heater is improved.
Drawings
The technical solution and other advantages of the present invention will become apparent from the following detailed description of specific embodiments of the present invention, which is to be read in connection with the accompanying drawings.
Fig. 1 is a schematic structural diagram of an impeller provided in an embodiment of the present invention.
Fig. 2 is a top view of an impeller provided in an embodiment of the present invention.
Fig. 3 is an enlarged view of the blades of the impeller of fig. 1.
Fig. 4 is a schematic side view of an impeller provided in an embodiment of the present invention.
Fig. 5 is an exploded view of a blower according to an embodiment of the present invention.
Fig. 6 is a schematic partial structural view of a fan provided in an embodiment of the present invention.
Fig. 7 is an enlarged view of the bending member of fig. 6.
The components of the drawings are identified as follows:
100. an impeller; 10. A hub;
20. a wheel disc; 30. A blade;
40. an air duct; 41a and an air inlet side;
41b, an air outlet side; 31. An inner side edge;
32. an outer side edge; 33. A first arcuate edge;
34. a second arcuate edge; 101. A fan;
200. a housing; 300. A noise reduction volute tongue;
400. a cover body; 301. An arc-shaped plate;
302. a tongue plate; 303. A bending member;
3031. a sound absorption hole; 310. A cavity;
320. a tuyere; 1001. A shaft hole;
1002. a channel; 330. arc-shaped cavity
201. A circular ring member; 201a, outer circle;
201b, inner circle.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. 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.
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", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Fig. 1 is a schematic structural diagram of an impeller provided in an embodiment of the present invention; fig. 2 is a top view of an impeller provided in an embodiment of the present invention.
As shown in fig. 1-2, the present embodiment provides an impeller 100 including a hub 10, a disk 20, and a plurality of blades 30.
The disk 20 is disposed opposite to the hub 10, and the plurality of blades 30 are disposed between the hub 10 and the disk 20 at intervals and are uniformly distributed along the circumferential direction of the hub 10. Wherein, a gap exists between the projections formed by any two adjacent blades 30 on the surface of the circular ring part 201.
The edge of the bottom surface of the hub 10 forms a circular ring member 201, and the center of the circular ring member is provided with a shaft hole 1001 for driving a driving device (not shown) for operating the impeller 100, such as a driving motor, and a motor shaft of the driving motor can be fixedly connected with the impeller 100 based on the shaft hole 1001 to drive the impeller 100 to rotate. The hub 10 is further formed with a plurality of channels 1002, the plurality of channels 1002 can increase the rotation speed of the impeller 100 during operation to improve the ventilation efficiency of the device to which the impeller 100 belongs, and the device to which the impeller 100 belongs may be the fan 101, which is not particularly limited herein.
In this embodiment, the number of the blades 30 may be 35 to 50, and an air duct 40 is formed between two adjacent blades 30, and the air duct 40 has an air inlet side 41a and an air outlet side 41 b.
Fig. 3 is an enlarged view of the blades of the impeller of fig. 1.
As shown in fig. 3, the blade 30 has an arc-shaped structure, and includes an inner side 31, an outer side 32, a first arc-shaped side 33, and a second arc-shaped side 34, wherein the inner side 31 and the outer side 32 are straight line segments, and the first arc-shaped side 33 and the second arc-shaped side 34 are arc segments.
Referring to fig. 1 to 3, in this embodiment, the inner side edge 31 is disposed on the air inlet side 41a of the air duct, and projections of the inner side edges 31 of the plurality of blades 30 formed on the surface of the ring member 201 are located on the same circle. The outer side edge 32 is arranged on the air outlet side 41b of the air duct, and projections of the outer side edges 32 of the plurality of blades 30 on the surface of the circular ring member 201 are located on the same circle. The first arc-shaped edge 33 and the second arc-shaped edge 34 are connected to the inner side edge 31 and the outer side edge 32 at two ends, respectively. Specifically, one end of the first arc-shaped edge 33 is connected to the top of the inner side edge 31, and the other end thereof is connected to the top of the outer side edge 32. The second arc-shaped edge 34 is abutted to the surface of the circular ring member 201, one end of the second arc-shaped edge 34 is connected to the bottom of the inner side edge 31, and the other end thereof is connected to the bottom of the outer side edge 32.
In this embodiment, a gap exists between the projection of the first arc-shaped edge 33 on the surface of the ring member 201 and the second arc-shaped edge 34, so that the plurality of blades 30 are obliquely arranged on the hub 10.
Fig. 4 is a schematic side view of an impeller provided in an embodiment of the present invention.
Referring to fig. 1-4, a connection point Q is formed at the connection of outer side 32 of each blade 30 and disk 20, and the connection points are equally spaced on disk 20.
The outer side edge 32 of each blade 30 intersects with the outer circle 201a of the circular ring member 201 at an outer intersection point M, and the outer intersection points M are distributed on the outer circle 201a of the circular ring member 201 at equal intervals. An excircle 201a tangent line taking any outer intersection point M as a tangent point forms a first included angle alpha with the outer side edge, and the angle of the first included angle alpha is more than or equal to 40 degrees and less than or equal to 80 degrees.
The inner side edge 31 of each blade 30 intersects the inner circle 201b of the ring member 201 at an inner intersection point N, a tangent of the inner circle 201b and the inner side edge 31 form a second included angle β (not shown) with the inner intersection point N as a tangent point, and the angle range of the second included angle β is greater than or equal to 30 ° and less than or equal to 55 °.
The air volume of the device to which the impeller 100 belongs is related to the angle of the air inlet side 41a and the air outlet side 41b of the blade 30, wherein when the angle of the first included angle is more than or equal to 58 degrees and less than or equal to 60 degrees; when the angle of the second included angle is greater than or equal to 45 degrees and less than or equal to 50 degrees, the airflow of the air duct 40 uniformly rotates, so that the effect of reducing noise is achieved.
Preferably, in a plane where the bottom surface of the hub 10 is located, a tangent line l taking the outer intersection point M as a tangent point is provided, and a first included angle α formed between the tangent line l and the outer side edge 32 of the blade 30 is 60 °, when the impeller 100 rotates, the blade 30 applies a certain acting force to the airflow, so as to avoid the gas from gathering near the wheel disc 20 or the hub 10, and further make the flow rate of the gas in the air duct 40 more uniform, further reduce noise generated during the operation of the impeller 100, and improve the operating efficiency of the device to which the impeller 100 belongs, so that the performance of the impeller 100 can be optimized.
FIG. 5 is an exploded view of a blower according to an embodiment of the present invention; fig. 6 is a schematic partial structural view of a fan provided in an embodiment of the present invention.
As shown in fig. 5 to 6, an embodiment of the present invention further provides a fan 101, which includes an impeller 100, a casing 200, a noise reduction volute tongue 300, and a cover 400.
Specifically, the housing 200 includes a cavity 310 and a tuyere 320 that are communicated with each other.
The impeller 100 is installed in the cavity 310, and the air duct 40 of the impeller 100 is communicated to the cavity 310.
The noise reduction volute tongue 300 is arranged at the joint of the cavity 310 and the air port 320.
The noise reduction volute tongue 300 comprises an arc-shaped plate 301 and a volute tongue plate 302. At least one arc-shaped plate 301 forms an arc-shaped cavity 330, and the impeller 100 is arranged in the arc-shaped cavity 330. The tongue plate 302 is connected to an arc-shaped plate 301 through a bending piece 303, and the included angle between the tongue plate 302 and the tangent plane of the surface of the arc-shaped plate 301 is 30-80 degrees, so that the bending piece 303 is formed at the connecting part of the tongue plate 302 and the arc-shaped plate 301. Wherein, an air port 320 of the noise reduction volute tongue 300 is formed between the volute tongue plate 302 and an arc-shaped plate 301.
In this embodiment, the arc-shaped plate 301, the bending member 303, and the tongue plate 302 are integrally formed to form the noise reduction volute tongue 300, and briefly, the noise reduction volute tongue 300 may be made of a bendable iron sheet or other flexible materials.
Fig. 7 is an enlarged view of the bending member of fig. 6.
As shown in fig. 7, the bending member 303 is a half-section tubular member cut along a bus, a plurality of sound absorbing holes 3031 are arranged in a matrix manner in the bending member 303, and the aperture of each sound absorbing hole 3031 is 2-5 mm. The distance between the first exhaust holes 3031 near the top or the bottom of the bent part 303 is 10% of the height of the bent part 303, which is beneficial to preventing the air flow from gathering near the wheel disc 20 or the hub 10, further making the flow velocity of the air in the cavity 310 more uniform, further reducing the noise generated by the impeller 100 in the working process, and simultaneously improving the working efficiency of the fan 101, so that the performance of the impeller 100 can be optimized, and further improving the working efficiency of the bathroom heater.
In this embodiment, the center of the arc-shaped plate 301 of the noise reduction volute tongue 300 is the high-pressure side, the volute plate 302 is the low-pressure side, the sound-absorbing hole 3031 near the high-pressure side is the sound-absorbing hole 3031 at the high-pressure side of the noise reduction volute tongue 300, and the sound-absorbing hole 3031 near the low-pressure side is the sound-absorbing hole 3031 at the low-pressure side of the noise reduction volute tongue 300. The bottom of the cavity 310 is a corrugated structure, and the corrugated structure may be an arc corrugation or a sawtooth corrugation.
When the air flows from the impeller 100 to the air inlet 320, part of the air flow enters the low-pressure side from the high-pressure side of the noise reduction volute tongue 300 through the sound absorption hole 3031, the air flow flows out of the cavity 310 after flowing in the bottom with the corrugated structure, the cavity 310 with the corrugated structure adjusts the air inlet state to a certain extent, the noise reduction volute tongue 300 with the sound absorption hole 3031 absorbs part of the air, reduces the pressure pulsation on the wall surface of the arc-shaped plate 301, reduces the rotation noise, and the sound absorption hole 3031 is used for adjusting the flowing state of the noise reduction volute tongue 300 near the bent piece 303, so that the eddy current is reduced, and the flowing noise of the fan 101 is reduced.
The cover 400 is detachably mounted to the case 200. The cover 400 may be a panel on which an illumination lamp and an air outlet communicated with the air port 320 of the noise reduction volute tongue 300 are installed. When the fan 101 rotates, the gas flows out of the impeller 100 to the tuyere 320 and is discharged through the tuyere 320.
A bathroom heater comprises the fan, wherein the bathroom heater further comprises a power switch box, a wiring terminal, a heating lamp, a temperature controller, a temperature fuse, a ventilation motor and other components (not shown), and the components are arranged in the shell.
The utility model provides an impeller, a fan and a bathroom heater, wherein each blade in the impeller and the bottom surface of a hub are provided with an intersection point, the intersection point is taken as a tangent line of a tangent point, and when an included angle beta between the tangent line and the outer side edge of the blade is 40-80 degrees, airflow of an air duct uniformly rotates, so that the effect of reducing noise is achieved. Furthermore, a plurality of sound absorbing holes are formed in the bending piece of the noise reduction volute tongue of the fan and used for adjusting the flowing state of the noise reduction volute tongue near the bending piece, so that eddy current is reduced, flowing noise of the fan is reduced, and working efficiency of the bathroom heater is improved.
The impeller, the fan and the bathroom heater provided by the embodiment of the utility model are described in detail, a specific example is applied in the description to explain the principle and the implementation mode of the utility model, and the description of the embodiment is only used for helping to understand the technical scheme and the core idea of the utility model; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (12)
1. An impeller, comprising:
the edge of the bottom surface of the hub forms a circular ring piece;
a wheel disc disposed opposite the hub; and
the blades are arranged between the hub and the wheel disc at intervals and are uniformly distributed along the circumferential direction of the hub, an air channel is formed between any two adjacent blades, and the air channel is provided with an air inlet side and an air outlet side; the blades comprise inner sides and outer sides, the inner sides are arranged on the air inlet sides of the air channels, and the outer sides are arranged on the air outlet sides of the air channels;
the outer side edge of each blade and the excircle of the circular ring piece are intersected at an outer intersection point, an excircle tangent line taking the outer intersection point as a tangent point and the outer side edge form a first included angle alpha, and the angle of the first included angle is more than or equal to 40 degrees and less than or equal to 80 degrees.
2. The impeller according to claim 1,
the outer intersection points are distributed on the outer circle of the circular ring piece at equal intervals.
3. The impeller according to claim 1,
the outer side edge of each blade and the connecting position of the wheel disc form a connecting point, and the connecting points are distributed on the wheel disc at equal intervals.
4. The impeller according to claim 1,
and a gap exists between the projections formed by any two adjacent blades on the surface of the circular ring piece.
5. The impeller according to claim 1,
each blade comprises a first arc-shaped edge and a second arc-shaped edge, and the second arc-shaped edge is abutted to the surface of the circular ring piece;
and a gap exists between the projection of the first arc-shaped edge on the surface of the ring piece and the second arc-shaped edge.
6. The impeller according to claim 1,
the projections of the outer side edges of the blades on the surface of the circular ring piece are positioned on the same circle;
the projections of the inner side edges of the plurality of blades on the surface of the circular ring piece are positioned on the same circle.
7. The impeller according to claim 1,
the inner side edge of each blade and the inner circle of the circular ring piece are intersected at an inner intersection point, an inner circle tangent line and the inner side edge form a second included angle beta by taking the inner intersection point as a tangent point, and the angle range of the second included angle beta is more than or equal to 30 degrees and less than or equal to 55 degrees.
8. The impeller according to claim 7,
the angle alpha of the first included angle is more than or equal to 58 degrees and less than or equal to 60 degrees;
the angle range of the second included angle is more than or equal to 45 degrees and less than or equal to 50 degrees.
9. A fan comprising an impeller according to any one of claims 1 to 8.
10. The fan of claim 9, further comprising:
the shell comprises a cavity and a tuyere which are communicated with each other; and
the noise reduction volute tongue is arranged at the joint of the cavity and the air port;
the impeller is arranged in the cavity, and the air duct of the impeller is communicated to the cavity.
11. The fan of claim 10,
the noise reduction volute tongue comprises a bending piece, and the bending piece is provided with sound absorption holes arranged in a matrix manner.
12. A bathroom warmer comprising a blower as claimed in any one of claims 9 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121168089.4U CN215333524U (en) | 2021-05-27 | 2021-05-27 | Impeller, fan and bathroom heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121168089.4U CN215333524U (en) | 2021-05-27 | 2021-05-27 | Impeller, fan and bathroom heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215333524U true CN215333524U (en) | 2021-12-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121168089.4U Active CN215333524U (en) | 2021-05-27 | 2021-05-27 | Impeller, fan and bathroom heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215333524U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114484566A (en) * | 2022-01-21 | 2022-05-13 | 嘉兴普洛瓦电器有限公司 | High-efficient low noise bathroom heater |
-
2021
- 2021-05-27 CN CN202121168089.4U patent/CN215333524U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114484566A (en) * | 2022-01-21 | 2022-05-13 | 嘉兴普洛瓦电器有限公司 | High-efficient low noise bathroom heater |
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