CN217761449U - Mixed flow fan and ducted air conditioner - Google Patents
Mixed flow fan and ducted air conditioner Download PDFInfo
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- CN217761449U CN217761449U CN202221287671.7U CN202221287671U CN217761449U CN 217761449 U CN217761449 U CN 217761449U CN 202221287671 U CN202221287671 U CN 202221287671U CN 217761449 U CN217761449 U CN 217761449U
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Abstract
The utility model provides a mixed flow fan and tuber pipe machine. The mixed flow fan comprises a volute, wherein an air inlet and an air outlet are formed in the volute, and an air flow channel is formed between the air inlet and the air outlet; the guide vane structure, the guide vane structure set up in the gas flow channel, just the guide vane structure can be right gas in the gas flow channel carries out rectification and/or pressure boost. The utility model provides a mixed flow fan and tuber pipe machine, through set up stator structure inside the spiral case, carry out rectification and/or pressure boost to the admitting air of impeller or the exhaust of impeller, thereby the efficiency of effectual promotion impeller and the air-out effect of mixed flow fan, the spiral case size of guaranteeing the mixed flow fan can satisfy at the inside pivoted requirement of tuber pipe machine, when the business turn over wind direction of tuber pipe machine changes, the mixed flow fan can wholly rotate as required and can not produce with the tuber pipe machine and interfere, thereby guarantee the air-out effect of tuber pipe machine.
Description
Technical Field
The utility model relates to an air treatment equipment technical field, especially a mixed flow fan and tuber pipe machine.
Background
The air duct machine is one of air conditioners, in order to improve the comfortableness, some air duct machines adopt an upper cold air outlet mode and a lower hot air outlet mode, waterfall type refrigeration and carpet type warm air can be realized, in order to realize the air outlet mode, the air outlet of the air duct machine is required to be reversible, in the existing air outlet reversible air duct machine, a cross-flow fan and a centrifugal fan are generally adopted, but the fan is not reversible due to the problem of the setting mode of fan blades, the air direction after the reversal is not reversible, therefore, at least two fans can be arranged, one fan is responsible for forward air outlet, and the other fan is responsible for reverse air outlet, so that the structure of the air duct machine is larger, and the cost is higher.
In order to reduce the cost, the fan needs to be reduced, the mixed flow fan is a fan between the axial flow fan and the centrifugal fan, an impeller of the mixed flow fan enables air to do centrifugal motion and axial motion, and the air flow motion in the volute mixes two motion modes of axial flow and centrifugal motion, so that the mixed flow fan is called mixed flow. Moreover, the mixed flow fan not only can reduce the volume, but also can ensure the flow direction and the wind pressure of the airflow.
However, the air flow channel inside the mixed flow fan in the prior art is unreasonable in design, which causes the low energy efficiency of the mixed flow fan.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides an in provide a mixed flow fan and tuber pipe machine to solve the problem that mixed flow fan efficiency is low among the prior art.
A mixed flow fan, comprising:
the volute is provided with an air inlet and an air outlet, and an air flow channel is formed between the air inlet and the air outlet;
the guide vane structure, the guide vane structure set up in the gas flow channel, just the guide vane structure can be right gas in the gas flow channel carries out rectification and/or pressure boost.
The mixed flow fan further comprises an impeller, the impeller is arranged in the volute, and the guide vane structure is arranged on one side of the impeller.
The guide vane structure is arranged between the impeller and the air inlet; or the guide vane structure is arranged between the impeller and the air outlet; or, the stator structure includes preceding stator structure and back stator structure, preceding stator structure set up in the impeller with between the air intake, back stator structure set up in the impeller with between the air outlet.
The guide vane structure includes a plurality of guide vanes, all the guide vanes use the axis of impeller is the annular distribution as the axis.
At least one be provided with the oscillating axle on the stator, the axis of oscillating axle with the axis of impeller has the contained angle, and has the stator of oscillating axle can use the axis of oscillating axle swings as the axis.
The included angle is 90 degrees.
The range of the swing angle alpha of the guide vane is 0 DEG to 10 deg.
The guide vane structure is provided with one or more of silencing teeth, bulges or pits.
The mixed flow fan further comprises an inner shell, the guide vane structure comprises a rear guide vane structure, the inner shell is arranged between the impeller and the air outlet, and the rear guide vane structure is arranged between the outer surface of the inner shell and the inner surface of the volute.
The stator structure includes a plurality of stator, the first border of stator with the external surface fixed set up of inner shell, the second border of stator with the internal surface fixed set up of spiral case.
The divergence angle b of the rear guide vane structure ranges from 10 ° to 40 °.
The outer surface of the volute is a curved surface.
The volute is of a ball table structure, and the maximum diameter of the volute is equal to the diameter of the ball table structure.
The volute is positioned on two end faces of the table structure and is respectively provided with the air inlet and the air outlet.
An air duct machine comprises the mixed flow fan.
The utility model provides a mixed flow fan and tuber pipe machine, through set up stator structure inside the spiral case, carry out rectification and/or pressure boost to the admitting air of impeller or the exhaust of impeller, thereby the efficiency of effectual promotion impeller and the air-out effect of mixed flow fan, the spiral case size of guaranteeing the mixed flow fan can satisfy at the inside pivoted requirement of tuber pipe machine, when the business turn over wind direction of tuber pipe machine changes, the mixed flow fan can wholly rotate as required and can not produce with the tuber pipe machine and interfere, thereby guarantee the air-out effect of tuber pipe machine.
Drawings
Fig. 1 is a schematic structural view of a mixed flow fan according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a guide vane structure and a swing shaft according to an embodiment of the present invention;
fig. 3 is a cross-sectional view of a mixed flow fan according to an embodiment of the present invention;
in the figure:
1. a volute; 11. an air inlet; 12. an air outlet; 2. an impeller; 31. a leading lobe structure; 32. a rear guide vane structure; 33. a guide vane; 34. a swing shaft.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
In the mixed flow fan in the prior art, when the impeller 2 rotates at a high speed, a negative pressure area is formed at the inlet of the impeller 2 to generate suction, so that gas enters from the current collector. In a complex housing environment, adverse air intake conditions tend to develop. Similarly, when the impeller 2 rotates at a high speed, the air flow is driven to flow out of the impeller at a high dynamic pressure and is finally discharged out of the volute 1, however, the air flow discharged by the impeller 2 has a high tangential velocity, and the tangential velocity component is not beneficial to subsequent flow, so that the pressure capacity of the mixed flow fan is reduced. In the prior art, the structure of the impeller is adjusted to improve the energy efficiency of the fan, however, through research on the airflow flowing principle by the applicant and analysis of simulation experiment data, the inventor finds that the air inlet and the air outlet of the impeller are adjusted to effectively improve the air outlet effect of the mixed flow fan, so that the flow guiding of the inlet air and the outlet air of the impeller is very important for improving the system performance of the mixed flow fan on the basis of the overall structure of the mixed flow fan.
The mixed flow fan shown in fig. 1 to 3 includes: the air conditioner comprises a volute 1, wherein an air inlet 11 and an air outlet 12 are arranged on the volute 1, and an air flow channel is formed between the air inlet 11 and the air outlet 12; the guide vane structure, the guide vane structure set up in the air current passageway, just the guide vane structure can be right gas in the air current passageway carries out rectification and/or pressure boost.
The mixed flow fan further comprises an impeller 2, the impeller 2 is arranged in the volute 1, and the guide vane structure is arranged on one side of the impeller 2. Wherein, a distance is arranged between the guide vane structure and the impeller 2, so that a dynamic and static gap is formed between the guide vane structure and the impeller 2 to further influence the airflow.
The guide vane structure is arranged between the impeller 2 and the air inlet 11. When the guide vane structure is arranged between the impeller 2 and the air inlet 11, the guide vane structure rectifies the air flow entering the impeller 2, so that the air flow enters the impeller 2 after having a certain rotation, thereby increasing the air inlet efficiency of the impeller 2.
The guide vane structure is arranged between the impeller 2 and the air outlet 12. When the guide vane structure is arranged between the impeller 2 and the air outlet 12, the guide vane structure rectifies and pressurizes air flow discharged by the impeller 2, and the air outlet effect of the mixed flow fan is ensured.
The stator structure includes preceding stator structure 31 and back stator structure 32, preceding stator structure 31 set up in the impeller 2 with between the air intake 11, back stator structure 32 set up in the impeller 2 with between the air outlet 12. The front guide vane structure 31 rectifies the airflow entering the impeller 2, so that the airflow enters the impeller 2 after having a certain rotation, thereby increasing the air inlet efficiency of the impeller 2, and the rear guide vane structure 32 rectifies and pressurizes the airflow discharged by the impeller 2, so as to further increase the air outlet effect of the mixed flow fan.
The guide vane structure comprises a plurality of guide vanes 33, and all the guide vanes 33 are annularly distributed by taking the axis of the impeller 2 as an axis. Wherein, the axis of the impeller 2 refers to the rotation axis of the impeller 2 during the rotation process.
At least one guide vane 33 is provided with a swinging shaft 34, the axis of the swinging shaft 34 and the axis of the impeller 2 form an included angle, and the guide vane 33 with the swinging shaft 34 can swing by taking the axis of the swinging shaft 34 as the axis. When the guide vane structure is the front guide vane structure 31, the airflow is rotated in advance, so that the airflow has a certain flow angle, the angle value between the direction of the airflow and the direction when the airflow enters the impeller 2 is reduced, and finally the purpose of reducing the resistance when the airflow enters the impeller 2 is achieved. Preferably, the larger the rotation speed of the impeller 2, the larger the angle at which the air flow enters the impeller 2, and therefore the larger the angle of inclination α of the guide vane 33 is required, whereas the smaller the rotation speed of the impeller 2, the smaller the inclination α of the guide vane 33 is. When the guide vane structure is the rear guide vane structure 32, the outlet air of the impeller 2 is further guided, when the impeller 2 works at different rotating speeds, the angles of the air flowing out of the impeller 2 are different, namely the angles of the air flow entering the space between the impeller 2 and the rear guide vane structure 32 are different, the size of the space is fixed, the racemization capacity of the space is fixed, namely the capacity of changing the angle of the air is fixed, when the angles of the air flowing into the space are different, the angles of the air flowing into the rear guide vane structure 32 are also different, in order to enable the flowing angle of the air flow to be the same as the angle of the air flow discharged from the space as far as possible, the flowing angle of the air flow in the rear guide vane structure 32 is changed accordingly through the swing of the guide vanes 33, the fitting degree of the outlet air flow direction of the rear guide vane structure 32 is further increased, the increase of the exhaust uniformity of the mixed flow fan is facilitated, and the mixed flow fan can achieve the optimal air volume value and the optimal air flow driving performance under multiple working rotating speeds. Preferably, the larger the rotation speed of the impeller 2, the larger the angle of the air flow leaving the impeller 2, so the larger the angle of the inclination angle of the guide vane 33 is required, whereas the smaller the rotation speed of the impeller 2, the smaller the inclination angle of the guide vane 33 is.
The angle of the included angle is 90 degrees. So that no structural interference is generated with the volute 1 in the swinging process of the guide vane 33, and the structure reliability of the guide vane 33 and the volute 1 is ensured.
The range of the swing angle α of the guide vane 33 is 0 ° to 10 °. Preferably 0 ° to 5 °.
One or more of silencing teeth, bulges or pits are arranged on the guide vane structure. The noise reduction effect is achieved by utilizing the silencing teeth, the bulges or the pits to carry out silencing.
The mixed flow fan still includes the inner shell, the stator structure includes back stator structure 32, the inner shell set up in impeller 2 with between the air outlet 12, back stator structure 32 set up in the outer surface of inner shell with between the internal surface of spiral case 1. The inner shell is used for further limiting the air duct in the volute 1, so that the air flow can be better guided by the guide vane 33 when passing through the rear guide vane structure 32.
The stator structure includes a plurality of stator 33, the first border of stator 33 with the outer fixed surface setting of inner shell, the second border of stator 33 with the internal surface fixed setting of spiral case 1. At this time, the guide vane 33 is fixedly arranged between the volute 1 and the inner shell, and the fixing strength between the volute 1 and the inner shell is increased by utilizing the rear guide vane structure 32, so that the effect of reinforcing ribs is realized.
The divergence angle b of the trailing vane structure 32 ranges from 10 ° to 40 °. The divergence angle is an included angle formed between a connecting line of a front edge and a tail edge of the rear guide vane structure 32 and a central line of the rear guide vane structure 32 along the flow direction of the gas, wherein the front edge is an air inlet end of the rear guide vane structure 32, and the tail edge is an air outlet end of the rear guide vane structure 32. That is, in the flow direction of the gas, the cross-sectional dimension of the rear guide vane structure 32 is gradually increased, and when the mixed flow fan is applied, the flow cross section of the gas flow entering the rear guide vane structure 32 is smaller than that of the gas flow flowing out of the rear guide vane structure 32.
The outer surface of the volute 1 is a curved surface. I.e. the cross-section of the volute 1 is a curved segment.
The volute 1 is of a ball table structure, and the maximum diameter of the volute 1 is equal to the diameter of the ball table structure. That is, spiral case 1 can carry out the free rotation in the fixed spherical space of diameter with the centre of sphere of ball platform structure as the center, when being applied to tuber pipe machine and tuber pipe machine demand when going out wind from top to bottom, can provide the fixed spherical space of diameter for the mixed flow fan that this application provided in the tuber pipe machine, realizes the switching of tuber pipe machine business turn over wind direction through the rotation of mixed flow fan.
The volute 1 is provided with an air inlet 11 and an air outlet 12 at two end surfaces of the table structure.
An air duct machine comprises the mixed flow fan.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (15)
1. The utility model provides a mixed flow fan which characterized in that: the method comprises the following steps:
the air conditioner comprises a volute (1), wherein an air inlet (11) and an air outlet (12) are formed in the volute (1), and an air flow channel is formed between the air inlet (11) and the air outlet (12);
the guide vane structure, the guide vane structure set up in the air current passageway, just the guide vane structure can be right gas in the air current passageway carries out rectification and/or pressure boost.
2. The mixed flow fan of claim 1, wherein: the mixed flow fan further comprises an impeller (2), the impeller (2) is arranged in the volute (1), and the guide vane structure is arranged on one side of the impeller (2).
3. The mixed flow fan of claim 2, wherein: the guide vane structure is arranged between the impeller (2) and the air inlet (11); or the guide vane structure is arranged between the impeller (2) and the air outlet (12); or, the stator structure includes preceding stator structure (31) and back stator structure (32), preceding stator structure (31) set up in impeller (2) with between air intake (11), back stator structure (32) set up in impeller (2) with between air outlet (12).
4. The mixed flow fan of claim 2, wherein: the guide vane structure comprises a plurality of guide vanes (33), and all the guide vanes (33) are annularly distributed by taking the axis of the impeller (2) as an axis.
5. The mixed flow fan of claim 4, wherein: at least one guide vane (33) is provided with a swinging shaft (34), the axis of the swinging shaft (34) and the axis of the impeller (2) form an included angle, and the guide vane (33) with the swinging shaft (34) can swing by taking the axis of the swinging shaft (34) as the axis.
6. The mixed flow fan of claim 5, wherein: the included angle is 90 degrees.
7. The mixed flow fan of claim 5, wherein: the range of the pivot angle alpha of the guide vane (33) is 0 DEG to 10 deg.
8. The mixed flow fan of claim 1, wherein: one or more of silencing teeth, bulges or pits are arranged on the guide vane structure.
9. The mixed flow fan of claim 2, wherein: the mixed flow fan further comprises an inner shell, the guide vane structure comprises a rear guide vane structure (32), the inner shell is arranged between the impeller (2) and the air outlet (12), and the rear guide vane structure (32) is arranged between the outer surface of the inner shell and the inner surface of the volute (1).
10. The mixed flow fan of claim 9, wherein: the back stator structure (32) includes a plurality of stator (33), the first border of stator (33) with the outer fixed surface setting of inner shell, the second border of stator (33) with the inner surface fixed setting of spiral case (1).
11. The mixed flow fan of claim 9, wherein: the divergence angle b of the trailing guide vane structure (32) ranges from 10 ° to 40 °.
12. The mixed flow fan of claim 1, wherein: the outer surface of the volute (1) is a curved surface.
13. The mixed flow fan of claim 1, wherein: the volute (1) is of a ball table structure, and the maximum diameter of the volute (1) is equal to the diameter of the ball table structure.
14. The mixed flow fan of claim 13, wherein: the volute (1) is positioned on two end faces of the table structure and is respectively provided with the air inlet (11) and the air outlet (12).
15. An air duct machine is characterized in that: comprising the mixed flow fan of any one of claims 1 to 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221287671.7U CN217761449U (en) | 2022-05-27 | 2022-05-27 | Mixed flow fan and ducted air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221287671.7U CN217761449U (en) | 2022-05-27 | 2022-05-27 | Mixed flow fan and ducted air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217761449U true CN217761449U (en) | 2022-11-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221287671.7U Active CN217761449U (en) | 2022-05-27 | 2022-05-27 | Mixed flow fan and ducted air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217761449U (en) |
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2022
- 2022-05-27 CN CN202221287671.7U patent/CN217761449U/en active Active
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