CN210509717U - Mixed flow fan blade, air duct structure and air conditioner indoor unit - Google Patents
Mixed flow fan blade, air duct structure and air conditioner indoor unit Download PDFInfo
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- CN210509717U CN210509717U CN201921245672.3U CN201921245672U CN210509717U CN 210509717 U CN210509717 U CN 210509717U CN 201921245672 U CN201921245672 U CN 201921245672U CN 210509717 U CN210509717 U CN 210509717U
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Abstract
The utility model provides a machine in mixed flow fan blade, wind channel structure and air conditioning, the mixed flow fan blade includes: a hub; the mixed flow blades are arranged on the peripheral surface of the hub; the rectifying blades are arranged on the outer peripheral surface of the hub, the rectifying blades and the mixed flow blades are arranged at intervals, the length of the rectifying blades in the axial extension direction of the hub is smaller than that of the mixed flow blades, and one ends of the rectifying blades extend to the end part of the hub so as to rectify air flow at the mixed flow blades through the rectifying blades. Through the technical scheme provided by the utility model, can solve the technical problem that the vortex can appear between the mixed flow blade of the mixed flow fan blade among the prior art.
Description
Technical Field
The utility model relates to a mixed flow fan blade technical field particularly, relates to a machine in mixed flow fan blade, wind channel structure and air conditioning.
Background
At present, a mixed flow fan blade in the prior art generally comprises a hub and a mixed flow blade, wherein the mixed flow blade is arranged on the hub. Generally, the problem of operation noise is controlled by controlling the number of the blades of the fan blade, but when the blades of the fan blade are fewer, the fan blade does little work, the air outlet volume can be influenced, and when the distance between the blades of the fan blade is large, airflow between the blades can generate vortex, and the vortex can bring noise.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a machine in mixed flow fan blade, wind channel structure and air conditioning to the technical problem of vortex can appear between the mixed flow blade of the mixed flow fan blade among the solution prior art.
In order to achieve the above object, according to the utility model discloses an aspect provides a mixed flow fan blade, include: a hub; the mixed flow blades are arranged on the peripheral surface of the hub; the rectifying blades are arranged on the outer peripheral surface of the hub, the rectifying blades and the mixed flow blades are arranged at intervals, the length of the rectifying blades in the axial extension direction of the hub is smaller than that of the mixed flow blades, and one ends of the rectifying blades extend to the end part of the hub so as to rectify air flow at the mixed flow blades through the rectifying blades.
Further, the hub is of a cone frustum structure, the first ends of the rectifying blades extend to the large-diameter end of the hub, and the second ends of the rectifying blades are located between the large-diameter end of the hub and the small-diameter end of the hub so as to rectify the airflow at the first end of the hub through the rectifying blades.
Further, the mixed flow blades are multiple, the rectifying blades are multiple, the mixed flow blades are arranged on the hub at intervals, and the rectifying blades are arranged between any two adjacent mixed flow blades so as to rectify air flow between the two adjacent mixed flow blades through the rectifying blades.
Furthermore, the rectifying blade and the mixed flow blade are arranged in parallel, and the distance between the rectifying blade and one mixed flow blade of two adjacent mixed flow blades is b1The distance between the rectifying blade and the other mixed flow blade of the two adjacent mixed flow blades is b2Wherein b is1＝b2。
Further, the length of the mixed flow blade is h along the axial extension direction of the hub1The length of the rectifying blade is h2，0.25≤h2/h1≤0.75。
Further, the length of the mixed flow blade is h along the extension direction of the axis of the hub1The length of the rectifying blade is h2，h2/h10.25 or h2/h10.5 or h2/h1＝0.75。
Furthermore, the mixed flow blades are multiple, a guide gap is formed between every two adjacent mixed flow blades, and the guide gap is provided with a circumferential air outlet, so that at least part of air flow entering the guide gap flows out of the circumferential air outlet along the radial direction of the hub under the centrifugal action of the mixed flow blades.
Further, the first end of the rectifying blade extends to the large-diameter end of the hub, and the radius of the outer circumference circle of the large-diameter end of the hub is R1The width of the first end of the rectifying blade is b1Wherein b is1≥R1。
According to the utility model discloses an on the other hand provides a wind channel structure, and wind channel structure includes wind channel casing and mixed flow fan blade, and the mixed flow fan blade setting is in the wind channel casing, and the mixed flow fan blade is the above-mentioned mixed flow fan blade that provides.
According to the utility model discloses an on the other hand provides an air-conditioning indoor unit, and the air-conditioning indoor unit includes the wind channel structure, and the wind channel structure is the air-conditioning indoor unit that the aforesaid provided.
Use the technical scheme of the utility model, through add the rectifier blade on wheel hub to make rectifier blade's one end extend to wheel hub's tip, the air current that can be convenient for like this rectifier blade to mixed flow blade department carries out the rectification, has reduced the appearance of vortex phenomenon, and then has reduced the noise that the vortex brought. Therefore, through the utility model provides a technical scheme can solve the technical problem that the vortex can appear between the mixed flow blade of the mixed flow fan blade among the prior art.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a schematic structural diagram of a mixed flow fan blade according to an embodiment of the present invention;
fig. 2 shows a front view of a mixed flow fan blade according to an embodiment of the present invention;
fig. 3 shows a schematic structural diagram of a mixed flow fan blade according to a second embodiment of the present invention;
fig. 4 shows a front view of a mixed flow fan blade according to a second embodiment of the present invention;
fig. 5 shows a schematic structural diagram of a mixed flow fan blade according to a third embodiment of the present invention; and
fig. 6 shows a front view of a mixed flow fan blade according to the third embodiment of the present invention.
Wherein the figures include the following reference numerals:
10. a hub; 11. a large diameter end; 20. a mixed flow blade; 30. and a rectifying blade.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1 to 6, the embodiment of the utility model provides a mixed flow fan blade, this mixed flow fan blade includes: hub 10, mixed flow blades 20 and straightening blades 30. The mixed flow blades 20 are disposed on the outer circumferential surface of the hub 10, and the rectifying blades 30 are disposed on the outer circumferential surface of the hub 10. The rectifying blades 30 and the mixed flow blades 20 are arranged at intervals, the length of the rectifying blades 30 in the axial extension direction of the hub 10 is smaller than that of the mixed flow blades 20, and one ends of the rectifying blades 30 extend to the end of the hub 10 so as to rectify the airflow at the mixed flow blades 20 through the rectifying blades 30.
Adopt the mixed flow fan blade that this embodiment provided, through add the rectifier blade 30 on wheel hub 10 to make the one end of rectifier blade 30 extend to wheel hub 10's tip, the air current that the rectifier blade 30 located 20 mixed flow blades of being convenient for like this rectifies, has increased the work load, has improved the air-out amount of wind, has reduced the appearance of vortex phenomenon, and then has reduced the noise that the vortex brought.
Specifically, the hub 10 in this embodiment has a truncated cone structure, the first end of the rectifying blade 30 extends to the large diameter end 11 of the hub 10, and the second end of the rectifying blade 30 is located between the large diameter end 11 of the hub 10 and the small diameter end of the hub 10, so as to rectify the airflow at the first end of the hub 10 through the rectifying blade 30. With such an arrangement, noise reduction at the first end can be better achieved.
In order to better reduce the generation of the vortex phenomenon, the mixed flow blade 20 in the embodiment is multiple, the rectifying blade 30 is multiple, the multiple mixed flow blades 20 are arranged on the hub 10 at intervals, and the rectifying blade 30 is arranged between any two adjacent mixed flow blades 20, so that the air flow between two adjacent mixed flow blades 20 is rectified by the rectifying blade 30.
Specifically, the flow straightening vane 30 and the mixed flow vane 20 may be arranged in parallel, and the distance between the flow straightening vane 30 and one mixed flow vane 20 of two adjacent mixed flow vanes 20 is b1The distance between the rectifying blade 30 and the other mixed flow blade 20 of the two adjacent mixed flow blades 20 is b2Wherein b is1＝b2。
Specifically, the length of the mixed flow blade 20 is h along the axial extension direction of the hub 101The length of the flow straightening vanes 30 is h2，0.25≤h2/h1Less than or equal to 0.75. With the arrangement, the eddy current phenomenon between two adjacent mixed flow blades 20 can be better reduced by adjusting the ratio between the rectifying blade 30 and the mixed flow blade 20, and the noise generated by the eddy current can be better reduced.
Specifically, the length of the mixed flow blade 20 is h along the extension direction of the axis of the hub 101The length of the flow straightening vanes 30 is h2. In the mixed flow fan blade of the first embodiment, h is arranged2/h10.25, in the mixed-flow fan of example two, h2/h10.5, in the mixed-flow fan blade of example three, h2/h1＝0.75。
In the mixed flow blades in the first embodiment, the second embodiment and the third embodiment, the mixed flow blades 20 are multiple, and a guide gap is formed between two adjacent mixed flow blades 20. The guide gap is provided with a circumferential air outlet, so that at least part of the air flow entering the guide gap flows out of the circumferential air outlet along the radial direction of the hub 10 under the centrifugal action of the mixed flow blades 20. By adopting the arrangement, the centrifugal effect of the mixed flow fan blade can be improved through the circumferential air outlet.
Specifically, in the first, second and third embodiments, the first end of the straightening vane 30 extends to the large diameter end 11 of the hub 10, and the radius of the outer circumference of the large diameter end 11 of the hub 10 is R1The width of the first end of the flow straightening vane 30 is b1Wherein b is1≥R1. By adopting the arrangement, the width of the first end of the rectifying blade 30 is increased, so that a negative pressure area can be conveniently formed at the position, close to the hub 10, of the rectifying blade 30, and further the centrifugal effect of the mixed flow fan blade is better improved.
In order to improve the centrifugal effect better, the structures of the positions of the straightening vanes 30 and the mixed flow vanes 20 in the first embodiment, the second embodiment and the third embodiment can be the same.
Specifically, in the first, second and third embodiments, the large diameter end 11 of the hub 10 is formedThe radius of the peripheral circle is R1The width of the first end of the mixed flow blade 20 is b2Wherein b is2≥R1. By adopting the arrangement, the width of the first end of the mixed flow blade 20 is increased, so that a negative pressure area can be conveniently formed at the position, close to the hub 10, of the mixed flow blade 20, and the centrifugal effect of the mixed flow fan blade can be better improved.
Specifically, the width of the first end of the mixed flow blade 20 in this embodiment is b2The width of the second end of the mixed flow blade 20 is b3，b3＞b2. By adopting the arrangement, the mixed flow effect can be better achieved. Specifically, the width of the first end of the mixed flow blade 20 may be equal to or similar to the width of the second end of the mixed flow blade 20.
In the present embodiment, the wind outlet angle at the first end of the mixed flow blade 20 is θ1The outlet angle at the second end of the mixed flow blade 20 is theta2，15°≤θ2-θ1Is less than or equal to 20 degrees. Specifically, the air outlet angle at the first end of the mixed flow blade 20 refers to an included angle between a tangent line at the first end of the mixed flow blade 20 and the axis of the hub 10, and the air outlet angle at the second end of the mixed flow blade 20 refers to an included angle between a tangent line at the second end of the mixed flow blade 20 and the axis of the hub 10. By adopting the arrangement, the arc-shaped inclination angle of the mixed flow blade 20 is small, so that the centrifugal effect when the mixed flow blade works is better realized, and the mixed flow blade 20 has the effect of a centrifugal fan when rotating. Under the condition of increasing the matching of the molded lines of the volute, the air outlet mode of the centrifugal fan can be realized, and the development requirements of more air-conditioning products can be met.
In the present embodiment, the length of the mixed flow blade 20 in the axial extension direction of the hub 10 is h, and the radius of the outer circumference of the large diameter end 11 of the hub 10 is R1，h＞R1. With such an arrangement, the centrifugal effect can be improved more effectively.
Specifically, the end surface of the first end of the mixed flow blade 20 is a plane, so that the end surface of the first end of the mixed flow blade 20 is flush with the end surface of the large diameter end 11 of the hub 10. With the adoption of the arrangement, the air flow can be better guided through the mixed flow blades 20, so that the centrifugal effect is better improved.
Specifically, the end surface of the first end of the mixed flow blade 20 is a plane, so that the end surface of the first end of the mixed flow blade 20 is inclined toward the direction close to the second end of the mixed flow blade 20.
Specifically, the angle between the end surface of the first end of the mixed flow blade 20 and the end surface of the large diameter end 11 of the hub 10 is θ3Wherein 0 DEG < theta3Is less than or equal to 20 degrees. Generally, a smaller angle is better, which facilitates better directing of the airflow by the mixing vanes 20.
Specifically, the end surface of the second end of the mixed flow blade 20 is a plane, so that the end surface of the second end of the mixed flow blade 20 is flush with the end surface of the small diameter end of the hub 10. With this arrangement, the second end of the mixing blade 20 can guide the airflow.
Specifically, the end surface of the second end of the mixed flow blade 20 is a plane, so that the end surface where the second end of the mixed flow blade 20 is located is obliquely arranged in a direction away from the first end of the mixed flow blade 20.
Specifically, the angle between the end surface of the second end of the mixed flow blade 20 and the end surface of the small diameter end of the hub 10 is θ4Wherein 0 DEG < theta4Is less than or equal to 30 degrees. By adopting the arrangement, the second end of the mixed flow blade 20 can be conveniently actuated to the air flow, and meanwhile, the influence on the dynamic balance effect of the mixed flow blade can be avoided.
The embodiment of the utility model provides a fourth provides an air channel structure, and air channel structure includes wind channel casing and mixed flow fan blade, and the mixed flow fan blade setting is in the wind channel casing, and the mixed flow fan blade that the mixed flow fan blade provided for embodiment one or embodiment two or embodiment three.
The embodiment of the utility model provides a fifth provides an interior machine of air conditioning, and interior machine of air conditioning includes the wind channel structure, and the wind channel structure is the interior machine of air conditioning that embodiment four provided.
From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: the flow of being convenient for the rectifier blade to mixed flow blade department carries out the rectification, has increased the work load, has improved the air-out amount of wind, has reduced the appearance of vortex phenomenon, and then has reduced the noise that the vortex brought.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A mixed flow fan blade is characterized by comprising:
a hub (10);
mixed flow blades (20) arranged on the outer circumferential surface of the hub (10);
the flow straightening vane (30) is arranged on the outer peripheral surface of the hub (10), the flow straightening vane (30) and the mixed flow vane (20) are arranged at intervals, the length of the flow straightening vane (30) is smaller than that of the mixed flow vane (20) along the axial extension direction of the hub (10), and one end of the flow straightening vane (30) extends to the end part of the hub (10) so as to straighten the airflow at the mixed flow vane (20) through the flow straightening vane (30).
2. The mixed flow fan blade as claimed in claim 1, wherein the hub (10) is of a truncated cone structure, the first end of the straightening vane (30) extends to the large diameter end of the hub (10), and the second end of the straightening vane (30) is located between the large diameter end of the hub (10) and the small diameter end of the hub (10) to straighten the air flow at the first end of the hub (10) through the straightening vane (30).
3. The mixed flow fan blade of claim 1, characterized in that the mixed flow fan blade (20) is provided with a plurality of mixed flow blades (20), the rectifying blade (30) is provided with a plurality of mixed flow blades (20) arranged on the hub (10) at intervals, and the rectifying blade (30) is arranged between any two adjacent mixed flow blades (20) so as to rectify the air flow between the two adjacent mixed flow blades (20) through the rectifying blade (30).
4. The mixed flow fan blade according to claim 3, characterized in that the flow straightening blade (30) and the mixed flow blade (20) are arranged in parallel, and the distance between the flow straightening blade (30) and one mixed flow blade (20) of two adjacent mixed flow blades (20) is b1The distance between the rectifying blade (30) and the other mixed flow blade (20) of the two adjacent mixed flow blades (20) is b2Wherein b is1＝b2。
5. Mixed flow blade according to claim 1, characterized in that the length of the mixed flow blade (20) is h along the axial extension direction of the hub (10)1The length of the rectifying blade (30) is h2，0.25≤h2/h1≤0.75。
6. Mixed flow blade according to claim 1, characterized in that the length of the mixed flow blade (20) is h in the extension direction of the axis of the hub (10)1The length of the rectifying blade (30) is h2，h2/h10.25 or h2/h10.5 or h2/h1＝0.75。
7. The mixed flow fan blade of claim 5, characterized in that the mixed flow fan blade (20) is provided with a plurality of mixed flow blades, a guide gap is formed between two adjacent mixed flow blades (20), and the guide gap is provided with a circumferential air outlet, so that at least part of the air flow entering the guide gap flows out from the circumferential air outlet along the radial direction of the hub (10) under the centrifugal action of the mixed flow blades (20).
8. The mixed flow fan blade according to claim 1, wherein the first end of the straightening blade (30) extends to the large diameter end of the hub (10), and the radius of the outer circumference circle of the large diameter end of the hub (10) is R1The width of the first end of the rectifying blade is b1Wherein b is1≥R1。
9. An air duct structure, characterized in that, the air duct structure includes an air duct casing and a mixed flow fan blade, the mixed flow fan blade is arranged in the air duct casing, the mixed flow fan blade is the mixed flow fan blade of any one of claims 1 to 8.
10. An indoor unit of an air conditioner, characterized in that the indoor unit of an air conditioner comprises an air duct structure, and the air duct structure is the air duct structure defined in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921245672.3U CN210509717U (en) | 2019-08-02 | 2019-08-02 | Mixed flow fan blade, air duct structure and air conditioner indoor unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921245672.3U CN210509717U (en) | 2019-08-02 | 2019-08-02 | Mixed flow fan blade, air duct structure and air conditioner indoor unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210509717U true CN210509717U (en) | 2020-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921245672.3U Active CN210509717U (en) | 2019-08-02 | 2019-08-02 | Mixed flow fan blade, air duct structure and air conditioner indoor unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210509717U (en) |
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2019
- 2019-08-02 CN CN201921245672.3U patent/CN210509717U/en active Active
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