CN110864010A - Novel volute tongue structure, fan volute and fan - Google Patents
Novel volute tongue structure, fan volute and fan Download PDFInfo
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- CN110864010A CN110864010A CN201911258748.0A CN201911258748A CN110864010A CN 110864010 A CN110864010 A CN 110864010A CN 201911258748 A CN201911258748 A CN 201911258748A CN 110864010 A CN110864010 A CN 110864010A
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- 230000010349 pulsation Effects 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000001808 coupling effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/422—Discharge tongues
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a novel volute tongue structure, a fan volute and a fan, relates to the technical field of centrifugal fans, and solves the technical problem that the centrifugal fan generates relatively large noise during operation due to the existing volute tongue structure in the prior art. The device comprises a wave unit, wherein a line parallel to the trend of the return air shaft of the volute on the wave unit is a non-straight line; the number of the wave units is one; or the number of the wave units is at least two and is distributed along the direction parallel to the return air shaft of the volute. The invention is used for reducing the noise generated by the centrifugal fan.
Description
Technical Field
The invention relates to the technical field of centrifugal fans, in particular to a novel volute tongue structure, a fan volute with the volute tongue structure and a fan.
Background
The centrifugal fan, especially the multi-wing centrifugal fan, has the characteristics of large pressure coefficient and low noise, and is widely applied to the field of household appliance air conditioners. With the continuous iterative upgrade of product technology, the requirements on the wind noise of an air conditioner, particularly an indoor unit, are more and more stringent no matter a user side or an opening end, and a centrifugal fan is used as the largest noise source of the indoor unit and is generally a noise reduction object which is mainly attacked by professionals in the industry.
The ordinary volute tongue usually adopts a structure that the volute tongue is stretched in a straight space or inclined simply, and the structure usually cannot give consideration to both the pneumatic noise characteristic and the air supply requirement of a fan. In general, airflow firstly works through blades to obtain high-speed kinetic energy, and then flows through the blades, and due to the existence of a wake region, high-speed and extremely-uneven flow field distribution characteristics can be generated. The volute tongue is required to bear violent slapping of high-speed airflow due to the special position of the volute tongue, and on the other hand, the volute tongue can periodically block high-speed flow in the wind wheel, and meanwhile, the volute tongue is also responsible for airflow shunting at the position. On the whole, the volute tongue inevitably becomes one of the most critical factors influencing the wind noise level of the fan due to the special position characteristic and the complex functional attribute of the volute tongue.
The common straight stretching volute tongue is designed in a straight line along the volute air return shaft, so that the high-speed airflow can more easily impact the volute tongue synchronously, namely, the pressure phase at the volute tongue is superposed, the dynamic and static coupling effect is enhanced, the pressure pulsation at the position is strengthened, and further strong rotary noise is excited. Meanwhile, because the flow distribution in the axial direction of the wind wheel is not uniform, the common straight stretching volute tongue belongs to a simple binary plane design, and the matching degree with the actual flow is relatively poor, namely the design may cause the turbulence pulsation in the area affected by the volute tongue to be intensified. The common inclined volute tongue can improve the rotation noise to a certain extent, but has relatively weak inhibition property on turbulent pulsation.
Disclosure of Invention
The invention aims to provide a novel volute tongue structure, a fan volute and a fan, and solves the technical problem that the noise generated when a centrifugal fan operates is relatively large due to the existing volute tongue structure in the prior art. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a novel volute tongue structure which comprises a wave unit, wherein a line parallel to the trend of a volute return air shaft on the wave unit is a non-straight line; the number of the wave units is one; or the number of the wave units is at least two and is distributed along the direction parallel to the return air shaft of the volute.
Further, the normal section of the wave unit along the airflow discharge direction is of an arc structure, a V-shaped structure or an inverted V-shaped structure.
Furthermore, the novel volute tongue structure is in a symmetrical structure by taking a center line perpendicular to the direction of the return air shaft of the volute as a symmetrical line; or the novel volute tongue structure is in an asymmetric structure by using a center line perpendicular to the direction of the return air shaft of the volute.
Furthermore, a reference line exists on the wave unit, the reference line is a top highest line or a bottom lowest line perpendicular to the direction of a volute return air shaft, and the wave unit is in a symmetrical structure by taking the reference line as a symmetrical line; or the wave units are in an asymmetrical structure with reference lines.
Further, the length of each wave unit in the direction parallel to the return air axis of the volute is the same;
the wave unit is provided with a reference line, the reference line is a top highest line or a bottom lowest line perpendicular to the direction of a volute return air shaft, and the wave unit is in a symmetrical structure by taking the reference line as a symmetrical line; or the wave units are in an asymmetrical structure with reference lines.
Further, the wave units are in an asymmetric structure with reference lines; the range of the distance C between the reference line of the wave unit and one side of the wave unit is more than or equal to 0.2B and less than or equal to 0.8B, wherein B is the length value of the wave unit in the direction parallel to the return air shaft of the volute.
Furthermore, the number of the wave units is two, the two wave units are in a symmetrical structure by taking a reference line as a symmetrical line, and an included angle α between a plane formed by the reference line on the wave unit and one side of the wave unit and a horizontal plane is not less than 2 degrees and not more than α degrees and not more than 30 degrees.
Furthermore, the number of the wave units is two, at least one wave unit is in an asymmetric structure by using a reference line, and the included angle α between the reference line of the wave unit and the plane formed by one side of the wave unit and the horizontal plane is not less than 2 degrees and not more than α degrees and not more than 40 degrees.
Further, when the number of the wave units is at least three, all the wave units are in a symmetrical structure by taking the reference line as a symmetrical line, and the included angle α between the reference line on the wave unit and the plane formed by one side of the wave unit and the horizontal plane is not less than 10 degrees and not more than α and not more than 60 degrees.
Further, when the number of the wave units is at least three, at least one wave unit is in an asymmetric structure by using a reference line, and the included angle between the reference line of the wave unit and a plane formed by one side of the wave unit and the horizontal plane is not less than 2 degrees and not more than α degrees and not more than 60 degrees.
Further, the length values of at least two wave units along the direction parallel to the return air shaft of the volute are different; the wave unit is provided with a reference line, the reference line is a top highest line or a bottom lowest line perpendicular to the direction of a volute return air shaft, and the wave unit is in a symmetrical structure by taking the reference line as a symmetrical line; or the wave units are in an asymmetrical structure with reference lines.
Furthermore, the wave unit is in an asymmetric structure by using a reference line, the range of the distance C between the reference line of the wave unit and one side of the wave unit is more than or equal to 0.2B and less than or equal to 0.8B, wherein B is the length value of the wave unit in the direction parallel to the return air shaft of the volute.
Furthermore, the number of the wave units is two, and the included angle α between the reference line of the wave unit and the plane formed by one side of the wave unit and the horizontal plane is not less than 2 degrees and not more than α degrees and not more than 40 degrees.
Furthermore, the number of the wave units is at least three, and the included angle α between the plane formed by the symmetry line on the wave unit and one side of the wave unit and the horizontal plane is 2- α -60 degrees.
A fan volute comprises the novel volute tongue structure.
A fan comprises the novel volute tongue structure.
The invention provides a novel volute tongue structure which is composed of wave units, wherein lines parallel to the direction of a volute return air shaft on the wave units are non-linear, so that a phase difference with higher efficiency is generated compared with the existing volute tongue, when a centrifugal fan runs at high speed, the running noise of the centrifugal fan can be effectively reduced, and the technical problem that the noise generated when the centrifugal fan runs is relatively high due to the existing volute tongue structure in the prior art is solved.
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 drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a fan volute provided by an embodiment of the invention (a normal section of a wave unit along an airflow discharge direction is in an arc shape);
FIG. 2 is a schematic front view of a blower volute provided by an embodiment of the present invention;
FIG. 3 is a left side view of a fan volute provided by an embodiment of the present invention (the normal section of the wave unit along the air flow discharge direction is arc-shaped);
fig. 4 is a left side view of a fan volute provided by an embodiment of the present invention (the normal section of a wave unit along the airflow discharging direction is in an inverted V shape, and the length values of two wave units along the direction parallel to the volute wind axis are the same);
fig. 5 is a left side view of a fan volute provided by an embodiment of the present invention (a normal section of a wave unit along an airflow discharge direction is in an inverted V shape, and length values of two wave units along a direction parallel to a volute return air axis are different);
fig. 6 is a left side view schematically illustrating a fan volute according to an embodiment of the present invention (a normal section of the wave unit along the air flow discharging direction is in an inverted V shape, and the wave unit is in a symmetrical structure with a center line perpendicular to the air return axis direction of the volute);
FIG. 7 is a schematic left view of a fan volute provided by an embodiment of the invention (the normal section of the wave unit along the air flow discharge direction is V-shaped);
fig. 8 is a left side view schematically illustrating a fan volute provided in an embodiment of the present invention (the normal section of the wave unit in the air flow discharge direction is an inverted V-shape, and the number of the wave units is four);
FIG. 9 is a schematic diagram of the dimensional relationships on the fan volute provided by the embodiment of the invention (the normal section of the wave unit along the air flow discharge direction is arc-shaped);
FIG. 10 is another schematic illustration of the dimensional relationships on the fan volute provided by embodiments of the present invention (the normal cross-section of the wave unit in the direction of discharge of the airflow is curved);
fig. 11 is a graph comparing experimental data results of a blower volute provided by an embodiment of the present invention with a general inclined volute of the prior art.
Figure 1-wave unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Referring to fig. 1 to 11, the invention provides a novel volute tongue structure, which comprises a wave unit 1, wherein a line on the wave unit 1 along the direction parallel to the volute return air axis is a non-straight line, namely not a straight line, and a line on the wave unit 1 along the direction parallel to the volute return air axis can be a broken line or a curved line; the number of the wave units 1 is one; or the number of the wave units 1 is at least two and is distributed along the direction parallel to the return air shaft of the volute. The novel volute tongue structure can be composed of the wave units 1, the wave units 1 are not flat, the novel volute tongue structure is nonlinear along the line parallel to the trend of the volute return air shaft, and can generate a more efficient phase difference than the existing volute tongue, so that the operation noise of the centrifugal fan can be effectively reduced when the centrifugal fan operates at a high speed.
As an optional implementation manner of the embodiment of the present invention, referring to fig. 10 to 8, a normal section of the wave unit 1 along the airflow discharge direction is an arc-shaped structure, a V-shaped structure, or an inverted V-shaped structure, and a radial gap D between the volute tongue structure and the fan blade is a constant value, as shown in fig. 2. The shape of the wave unit 1 can enable the novel volute tongue structure to be 'wave', the noise generated during operation of the fan can be effectively reduced, the flow field characteristics and turbulence pulsation characteristics of the volute tongue influence area are improved to a certain extent, the falling strength of partial vortex is weakened, improvement of a certain degree is generated on a sound source radiation head, and then the sound pressure level in the whole noise frequency spectrum range is reduced to a certain degree.
As an optional implementation manner of the embodiment of the invention, the novel volute tongue structure can be in a symmetrical structure by taking a center line perpendicular to the direction of the return air shaft of the volute casing as a symmetrical line; or the novel volute tongue structure can also be in an asymmetric structure by using a center line perpendicular to the direction of the return air shaft of the volute.
As an optional implementation manner of the embodiment of the present invention, a reference line exists on the wave unit 1, and the reference line is a top highest line or a bottom lowest line perpendicular to a direction of a volute return air axis, referring to fig. 4, the wave unit 1 is in a symmetrical structure with the reference line as a symmetrical line; alternatively, referring to fig. 6, the wave unit 1 has an asymmetrical structure with reference lines.
As an optional implementation manner of the embodiment of the present invention, the number of the wave units 1 is at least two, that is, the number of the wave units 1 may be two, or may be three or four, and the number of the wave units 1 may be reasonably selected according to actual situations. The novel volute tongue structure can be composed of wave units 1, and two adjacent wave units 1 are connected.
As an alternative embodiment of the present invention, referring to fig. 9 and 10, the number of the wave units 1 is two, the length of each wave unit 1 in the direction parallel to the volute return air axis is the same, i.e., B1 is equal to B2(Bn is the length of the nth wave unit 1 in the direction parallel to the volute return air axis), a reference line exists on the wave unit 1, the reference line is the top highest line or the bottom lowest line perpendicular to the volute return air axis, the two wave units 1 are symmetrical with the reference line as a symmetry line, B1-B1 is the symmetry line corresponding to the wave unit 1, B2-B2 is the symmetry line corresponding to the (2 nd) wave unit, i.e., C2 is equal to C1 is equal to 0.5B1, the symmetry line on the wave unit 1 (B1-B1 or B2-B36) is equal to or less than 3930 ° and 962 ° or less, i.e., the angle between the plane formed by the wave unit 1 side and the horizontal plane is equal to 3637 is equal to 2 ° or less than 30 ° and equal to α ° 892 ° or less than 3638 °.
To further illustrate the noise reduction effect, taking an air-conditioning duct indoor unit as an example, the air-conditioning duct indoor unit adopts a double-suction centrifugal fan (where B2 ═ B1 ═ 0.5A and C2 ═ C1 ═ 0.5B1), the double fans are arranged in parallel, and the measured noise with the same air volume is subjected to comparison, for example, as shown in fig. 11, the abscissa of fig. 11 is "air volume", and the ordinate is "a weighted noise sound pressure level". It is obvious from the figure that the centrifugal fan with the novel volute tongue structure provided by the invention can effectively improve the aerodynamic noise and the acoustic quality thereof generated when the centrifugal fan operates compared with the centrifugal fan with the existing common inclined volute tongue.
As an optional implementation mode of the embodiment of the invention, the number of the wave units 1 is two, the length value of each wave unit 1 in the direction parallel to the return air axis of the volute is the same, a reference line exists on each wave unit 1, the reference line is perpendicular to the top highest line or the bottom lowest line in the return air axis direction of the volute, at least one wave unit 1 is in an asymmetric structure by the reference line, the included angle α between the plane formed by the reference line of each wave unit 1 and one side of the wave unit 1 and the horizontal plane is in the range of 2 degrees to α degrees, for the wave unit 1 in the asymmetric structure by the reference line, the distance C between the reference line of the wave unit 1 and one side of the wave unit 1 is in the range of 0.2B to 0.8B, wherein B is the length value of the wave unit 1 in the direction parallel to the return air axis of the volute.
As an optional implementation manner of the embodiment of the present invention, when the number of the wave units 1 is at least three, the length of each wave unit 1 in the direction parallel to the return axis of the volute is the same, a reference line exists on the wave unit 1, the reference line is the top highest line or the bottom lowest line perpendicular to the return axis direction of the volute, each wave unit 1 is in a symmetrical structure with the reference line as a symmetrical line, and an included angle α between a plane formed by the reference line on each wave unit 1 and one side of the wave unit 1 and a horizontal plane ranges from 10 ° to α ° to 60 °.
As an optional implementation mode of the embodiment of the invention, when the number of the wave units 1 is at least three, the length value of each wave unit 1 in the direction parallel to the return air axis of the volute is the same, the wave units 1 are provided with reference lines, the reference lines are perpendicular to the top highest line or the bottom lowest line in the return air axis direction of the volute, at least one wave unit 1 is in an asymmetric structure by the reference lines, the included angle α between the plane formed by the reference line of each wave unit 1 and one side of the wave unit 1 and the horizontal plane ranges from 2 degrees to α degrees and from 60 degrees, for the wave unit 1 in the asymmetric structure by the reference lines, the range of the distance C between the reference line of the wave unit 1 and one side of the wave unit 1 is 0.2B to 0.8B, wherein B is the length value of the wave unit 1 in the direction parallel to the return air axis of the volute.
As an optional implementation mode of the embodiment of the invention, the number of the wave units 1 is two, the length values of the two wave units 1 in the direction parallel to the volute return air axis are different, the wave units 1 are provided with reference lines, the reference lines are perpendicular to the top highest line or the bottom lowest line in the volute return air axis direction, the wave units 1 are in a symmetrical structure by taking the reference lines as symmetrical lines, or the wave units 1 are in an asymmetrical structure by taking the reference lines, the included angle α between the plane formed by the reference line of each wave unit 1 and one side of the wave unit 1 and the horizontal plane is within the range of 2 degrees to α degrees, for the wave unit 1 in the asymmetrical structure by taking the reference line, the distance C between the reference line of the wave unit 1 and one side of the wave unit 1 is within the range of 0.2B to 0.8B, wherein B is the return air length value of the wave unit 1 in the direction parallel to the volute return air axis.
As an optional implementation mode of the embodiment of the invention, when the number of the wave units 1 is at least three, the length values of at least two wave units 1 in the direction parallel to the return air axis of the volute are different, the wave units 1 are provided with reference lines, the reference lines are perpendicular to the top highest line or the bottom lowest line in the return air axis direction of the volute, the wave units 1 are in a symmetrical structure by taking the reference lines as symmetrical lines, or the wave units 1 are in an asymmetrical structure by taking the reference lines, the included angle between the plane formed by the reference line of each wave unit 1 and one side of the wave unit 1 and the horizontal plane is within the range of 2 degrees to α degrees, wherein the included angle is not less than 60 degrees, for the wave unit 1 in the asymmetrical structure by taking the reference lines, the distance C from the reference line of the wave unit 1 to one side of the wave unit 1 is within the range of 0.2B to 0.8B, wherein B is the length value of the wave unit 1 in.
A fan volute comprises the novel volute tongue structure provided by the invention.
A fan comprises the novel volute tongue structure provided by the invention.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (16)
1. A novel volute tongue structure is characterized by comprising a wave unit (1), wherein,
the line on the wave unit (1) along the direction parallel to the return air shaft of the volute is a non-straight line;
the number of the wave units (1) is one; or the number of the wave units (1) is at least two and the wave units are distributed along the direction parallel to the return air shaft of the volute.
2. The novel volute tongue structure of claim 1, wherein the normal section of the wave unit (1) along the airflow discharge direction is in an arc structure or a V-shaped structure or an inverted V-shaped structure.
3. The novel volute tongue structure as claimed in claim 1, wherein the novel volute tongue structure is symmetrical about a center line perpendicular to a direction of a return air axis of the volute casing; or the novel volute tongue structure is in an asymmetric structure by using a center line perpendicular to the direction of the return air shaft of the volute.
4. The novel volute tongue structure is characterized in that a reference line exists on the wave unit (1), the reference line is a top highest line or a bottom lowest line perpendicular to the direction of a volute return air axis, and the wave unit (1) is in a symmetrical structure by taking the reference line as a symmetrical line; or the wave unit (1) is in an asymmetric structure with a reference line.
5. The novel volute tongue structure according to any one of claims 1-4, wherein the length of each wave unit (1) in a direction parallel to the return air axis of the volute is the same;
a reference line exists on the wave unit (1), the reference line is a top highest line or a bottom lowest line perpendicular to the direction of a volute return air shaft, and the wave unit (1) is in a symmetrical structure by taking the reference line as a symmetrical line; or the wave unit (1) is in an asymmetric structure with a reference line.
6. The novel volute tongue structure of claim 5, wherein the wave unit (1) is in an asymmetric structure with a reference line; the range of the distance C between the reference line of the wave unit (1) and one side of the wave unit (1) is more than or equal to 0.2B and less than or equal to 0.8B, wherein B is the length value of the wave unit (1) in the direction parallel to the return air shaft of the volute.
7. The novel volute tongue structure of claim 5, wherein the number of the wave units (1) is two, the two wave units (1) are symmetrical by taking a reference line as a symmetry line, and an included angle α formed between the reference line on the wave unit (1) and a plane formed by one side of the wave unit (1) and a horizontal plane is in a range of 2 degrees to α degrees and 30 degrees.
8. The novel volute tongue structure of claim 5, wherein the number of the wave units (1) is two, at least one wave unit (1) is in an asymmetric structure by a reference line, and an included angle α formed between the reference line of the wave unit (1) and a plane formed by one side of the wave unit (1) and a horizontal plane is in a range of 2 degrees to α degrees and 40 degrees.
9. The novel volute tongue structure of claim 5, wherein when the number of the wave units (1) is at least three, all the wave units (1) are symmetrical by taking a reference line as a symmetry line, and an included angle α formed by the reference line on each wave unit (1) and a plane formed by one side of each wave unit (1) and a horizontal plane is in a range of 10 degrees to α degrees and 60 degrees.
10. The novel volute tongue structure of claim 5, wherein when the number of the wave units (1) is at least three, at least one wave unit (1) is in an asymmetric structure by using a reference line, and an included angle between a plane formed by the reference line of the wave unit (1) and one side of the wave unit (1) and a horizontal plane is within a range of 2 degrees to α degrees and 60 degrees.
11. The novel volute tongue structure according to any of claims 1-4, wherein at least two of said wave units (1) have different lengths in a direction parallel to the return air axis of the volute;
a reference line exists on the wave unit (1), the reference line is a top highest line or a bottom lowest line perpendicular to the direction of a volute return air shaft, and the wave unit (1) is in a symmetrical structure by taking the reference line as a symmetrical line; or the wave unit (1) is in an asymmetric structure with a reference line.
12. The novel volute tongue structure of claim 11, wherein the wave unit (1) is asymmetric with respect to a reference line, and a distance C between the reference line of the wave unit (1) and one side of the wave unit (1) is in a range of 0.2B-0.8B, wherein B is a length of the wave unit (1) in a direction parallel to a return air axis of the volute.
13. The novel volute tongue structure of claim 11, wherein the number of the wave units (1) is two, and an included angle α formed between a reference line of the wave unit (1) and a plane formed by one side of the wave unit (1) and a horizontal plane is in a range of 2 degrees to α degrees and 40 degrees.
14. The novel volute tongue structure of claim 11, wherein the number of the wave units (1) is at least three, and an included angle α formed by a symmetry line on the wave unit (1) and a plane formed by one side of the wave unit (1) and a horizontal plane ranges from 2 degrees to α degrees and from 60 degrees.
15. A blower volute, comprising the novel volute tongue structure of any one of claims 1 to 14.
16. A blower comprising the novel volute tongue structure of any one of claims 1-14.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911258748.0A CN110864010A (en) | 2019-12-10 | 2019-12-10 | Novel volute tongue structure, fan volute and fan |
| PCT/CN2020/112433 WO2021114739A1 (en) | 2019-12-10 | 2020-08-31 | Novel volute tongue structure, fan volute, and fan |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911258748.0A CN110864010A (en) | 2019-12-10 | 2019-12-10 | Novel volute tongue structure, fan volute and fan |
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| CN110864010A true CN110864010A (en) | 2020-03-06 |
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| CN201911258748.0A Pending CN110864010A (en) | 2019-12-10 | 2019-12-10 | Novel volute tongue structure, fan volute and fan |
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| CN (1) | CN110864010A (en) |
| WO (1) | WO2021114739A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021114739A1 (en) * | 2019-12-10 | 2021-06-17 | 珠海格力电器股份有限公司 | Novel volute tongue structure, fan volute, and fan |
| CN114251282A (en) * | 2020-09-25 | 2022-03-29 | 佛山市顺德区美的洗涤电器制造有限公司 | Centrifugal fan and shell structure thereof, air outlet control method and device and range hood |
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| CN109681447A (en) * | 2019-02-18 | 2019-04-26 | 珠海格力电器股份有限公司 | Fan assembly with noise-reducing volute tongue and air conditioner |
| CN110067775A (en) * | 2018-01-24 | 2019-07-30 | 青岛海尔智慧厨房电器有限公司 | Volute tongue structure, fan volute and range hood |
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| CN205858724U (en) * | 2016-01-26 | 2017-01-04 | 西安交通大学 | A kind of novel multi-wing centrifugal fan |
| CN110864010A (en) * | 2019-12-10 | 2020-03-06 | 珠海格力电器股份有限公司 | Novel volute tongue structure, fan volute and fan |
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| CN203978927U (en) * | 2014-08-22 | 2014-12-03 | 广东海信家电有限公司 | A kind of pair of air intake centrifugal blower fan |
| CN204357773U (en) * | 2014-12-01 | 2015-05-27 | 江苏新科电器有限公司 | A kind of breeze fan of cylinder cabinet-type air conditioner and snail tongue thereof |
| CN207145325U (en) * | 2017-05-11 | 2018-03-27 | 珠海格力电器股份有限公司 | Air conditioner, air conditioner indoor unit and cross-flow fan thereof |
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| CN110067775A (en) * | 2018-01-24 | 2019-07-30 | 青岛海尔智慧厨房电器有限公司 | Volute tongue structure, fan volute and range hood |
| CN109681447A (en) * | 2019-02-18 | 2019-04-26 | 珠海格力电器股份有限公司 | Fan assembly with noise-reducing volute tongue and air conditioner |
| CN210292246U (en) * | 2019-04-22 | 2020-04-10 | 宁波奥克斯电气股份有限公司 | Volute tongue structure, base and air conditioner |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021114739A1 (en) * | 2019-12-10 | 2021-06-17 | 珠海格力电器股份有限公司 | Novel volute tongue structure, fan volute, and fan |
| CN114251282A (en) * | 2020-09-25 | 2022-03-29 | 佛山市顺德区美的洗涤电器制造有限公司 | Centrifugal fan and shell structure thereof, air outlet control method and device and range hood |
| CN114251282B (en) * | 2020-09-25 | 2022-12-06 | 佛山市顺德区美的洗涤电器制造有限公司 | Centrifugal fan and shell structure thereof, air outlet control method and device and range hood |
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| Publication number | Publication date |
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| WO2021114739A1 (en) | 2021-06-17 |
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