CN217558625U - Mixed flow fan and air duct machine - Google Patents
Mixed flow fan and air duct machine Download PDFInfo
- Publication number
- CN217558625U CN217558625U CN202221291413.6U CN202221291413U CN217558625U CN 217558625 U CN217558625 U CN 217558625U CN 202221291413 U CN202221291413 U CN 202221291413U CN 217558625 U CN217558625 U CN 217558625U
- Authority
- CN
- China
- Prior art keywords
- flow fan
- mixed flow
- volute
- air outlet
- inner shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model provides a mixed flow fan and tuber pipe machine. The mixed flow fan includes: the volute is provided with an air outlet; the diversion cone is arranged at the air outlet, and the airflow of the air outlet flows through the diversion cone; the generatrix of the flow guiding cone comprises a straight line section and a curve section which are connected. The utility model provides a mixed flow fan and tuber pipe machine sets the generating line of water conservancy diversion awl to the straightway and adds the curved line section, under the prerequisite of guaranteeing the water conservancy diversion effect, utilizes the curved line section will produce the air current that attaches the wall effect and guide, avoids the air current to produce the vortex and influence the air-out effect of mixed flow fan in air outlet department, makes straightway and the tangent setting of inner shell simultaneously, avoids the junction of straightway and inner shell to produce the stair structure and influence the air current and flow, further guarantees the air-out effect of mixed flow fan.
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.
The flow guide cone of the mixed flow fan in the prior art is unreasonable in design, so that the mixed flow fan is low in energy efficiency.
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 outlet; the diversion cone is arranged at the air outlet, and the airflow at the air outlet flows through the diversion cone; the generatrix of the guide cone comprises a straight line section and a curved line section which are connected.
The calculation formula of the generatrix of the flow guide cone is as follows:
wherein: t is an independent variable, the value range of t is (0, 1), P0 is the bottom end point of the guide cone, P1 is the connection point of the straight line section and the curve section of the guide cone, P3 is the top end point of the guide cone, and P2 is the arc control point of the curve section.
Along the direction of the rotation axis of the diversion cone, the ratio range of the dimension H1 corresponding to the straight line segment to the dimension H2 corresponding to the curve segment is more than 0 and less than H1/H2 and less than 1.
The mixed flow fan further comprises an inner shell, the inner shell is arranged in the volute, an annular flow channel is formed between the inner shell and the volute, one end of the annular flow channel forms the air outlet, and the flow guide cone is arranged on the inner shell.
The diversion conical part corresponding to the straight line section is connected with the inner shell.
The straight line section and the part of the inner shell forming the air outlet are arranged in a tangent mode.
The mixed flow fan further comprises a guide vane, the guide vane is arranged in the annular flow channel, the first edge of the guide vane is fixedly arranged on the outer surface of the inner shell, and the second edge of the guide vane is fixedly arranged on the inner surface of the volute.
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 provided with an air inlet and an air outlet respectively at two end surfaces of the ball table structure.
A tuber pipe machine, includes above-mentioned mixed flow fan.
The utility model provides a mixed flow fan and tuber pipe machine sets the generating line of water conservancy diversion awl to straightway plus curved line section, under the prerequisite of guaranteeing the water conservancy diversion effect, utilize the curved line section will produce the air current that attaches the wall effect and guide, avoid the air current to produce the vortex and influence the air-out effect of mixed flow fan in air outlet department, make straightway and the tangent setting of inner shell simultaneously, avoid the junction of straightway and inner shell to produce the stair structure and influence the air current and flow, further guarantee the air-out effect of mixed flow fan.
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 sectional view of a guide cone according to an embodiment of the present invention;
in the figure:
1. a volute; 11. an air inlet; 12. an air outlet; 2. a flow guide cone; 21. a straight line segment; 22. A curve segment; 3. an inner shell; 4. and (6) guide vanes.
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.
As shown in fig. 1 and 2, the present invention provides a spiral case 1, wherein an air outlet 12 is arranged on the spiral case 1; the diversion cone 2 is arranged at the air outlet 12, and the airflow of the air outlet 12 flows through the diversion cone 2; the generatrix of the guide cone 2 comprises a straight line section 21 and a curved line section 22 which are connected. The generatrix of the diversion cone 2 is set to be a straight line section 21 and a curve section 22, and on the premise of ensuring the diversion effect, the curve section 22 is utilized to guide the airflow generating the wall attachment effect, so that the influence of the airflow on the air outlet effect of the mixed flow fan due to the generation of vortex at the air outlet 12 is avoided.
The calculation formula of the generatrix of the guide cone 2 is as follows:
wherein: t is an independent variable, the value range of t is (0, 1), P0 is the bottom end point of the guide cone 2, P1 is the connection point of the straight line segment 21 and the curve segment 22 of the guide cone 2, P3 is the top end point of the guide cone 2, and P2 is the arc control point of the curve segment 22.
Along the direction of the rotation axis of the diversion cone 2, the ratio range of the dimension H1 corresponding to the straight line section 21 to the dimension H2 corresponding to the curved line section 22 is 0 < H1/H2 < 1. That is, the ratio of the height dimension H1 of the straight line segment 21 to the height dimension H2 of the curved line segment 22 ranges from 0 < H1/H2 < 1. When the ratio is 0, explain that the generating line of water conservancy diversion awl 2 this moment does not have straightway 21, only arc line segment, because do not have straightway 21's transition for can't form smooth transition between inner shell and water conservancy diversion awl 2, thereby influence mixed flow fan's air-out effect, can't play effectual water conservancy diversion effect in 12 departments of air outlet simultaneously, can make 2 rear gathering vortexes of water conservancy diversion awl, be unfavorable for mixed flow fan to take the promotion of pressure ability and the maintenance of mixed flow fan efficiency. And when the ratio is 1, the height of water conservancy diversion awl 2 was too big this moment to water conservancy diversion awl 2 can produce sharp portion, and this sharp portion can surpass the radius of rotation of fan, when mixed flow fan rotation switched the air-out direction, can take place to interfere with the casing, and the water conservancy diversion awl 2 of great size can influence the flow of giving vent to anger of mixed flow fan, makes the fan take the pressure ability to descend, efficiency decline.
The mixed flow fan of the embodiment is subjected to a simulation test, the numerical value of H1/H2 is changed, and the simulation result is as follows:
according to simulation data, when H1/H2 is 0.4, the air quantity and the calculation pressure head basically reach the maximum value, the calculation efficiency of the mixed flow fan is also basically maximum, when H1/H2 is increased to 0.8, the air quantity and the calculation pressure head both start to be reduced, the calculation efficiency also starts to be reduced, when H1/H2 is continuously increased to 1, the air quantity and the calculation pressure head are further reduced, the calculation efficiency is further reduced, when H1/H2 is continuously increased to 1.3, the proportion of the straight line segment 21 is larger, the diversion effect on airflow is difficult to generate, and the air quantity and the pressure capacity are obviously reduced; when H1H 2 reduces to 0, the amount of wind, calculate pressure head and computational efficiency although reach the maximum value, nevertheless because do not have the transition of straightway 21 for can't form smooth transition between inner shell 3 and water conservancy diversion awl 2, thereby influence the air-out effect of mixed flow fan, can't play effectual water conservancy diversion effect in air outlet 12 department simultaneously, can make 2 rear gathering eddies of water conservancy diversion awl, be unfavorable for the mixed flow fan to take the promotion of pressure ability and the maintenance of mixed flow fan efficiency.
The mixed flow fan further comprises an inner shell 3, the inner shell 3 is arranged in the volute 1, an annular flow channel is formed between the inner shell 3 and the volute 1, one end of the annular flow channel forms the air outlet 12, and the guide cone 2 is arranged on the inner shell 3. Utilize inner shell 3 to install the impeller of mixed flow fan and driving motor thereof, utilize annular flow channel to carry out the water conservancy diversion of certain degree to impeller combustion air simultaneously, make the air current of air outlet 12 department can assemble same department after discharging, thereby guarantee the air-out effect of mixed flow fan, set up water conservancy diversion awl 2 on inner shell 3 simultaneously, can utilize water conservancy diversion awl 2 further water conservancy diversion to the air current in the annular flow channel, avoid multi-directional air current to assemble the back and produce the condition such as vortex, guarantee the air-out effect of mixed flow fan.
The part of the guide cone 2 corresponding to the straight line segment 21 is connected with the inner shell 3. That is, the air flow of the air outlet 12 flows through the straight line segment 21 and the curved line segment 22 in sequence, so that the curved line segment 22 is fully utilized to guide the air flow generating the wall attachment effect, and the air flow is prevented from generating a vortex at the air outlet 12 to influence the air outlet effect of the mixed flow fan.
The straight line segment 21 is tangential to the portion of the inner shell 3 forming the air outlet 12. The influence on the flow of air flow caused by the step structure generated at the joint of the straight line section 21 and the inner shell 3 is avoided, and the air outlet effect of the mixed flow fan is further ensured.
The mixed flow fan further comprises a guide vane 4, the guide vane 4 is arranged in the annular flow channel, a first edge of the guide vane 4 is fixedly arranged on the outer surface of the inner shell 3, and a second edge of the guide vane 4 is fixedly arranged on the inner surface of the volute 1. And the guide vane 4 is used for further guiding the airflow in the annular flow passage, so that the air outlet effect of the mixed flow fan is ensured.
The outer surface of the volute 1 is a curved surface. I.e. the cross-section of the outer surface of the volute 1 is a curved section 22.
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. The sizes of the air ports (the air inlet 11 and the air outlet 12) are ensured by arranging the air ports on the end surfaces, and the potential safety hazard caused by exposure of the internal structure of the volute 1 due to the holes on the curved surface part of the volute 1 can be avoided.
A tuber pipe machine, includes above-mentioned 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 (11)
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 outlet (12) is formed in the volute (1);
the flow guide cone (2) is arranged at the air outlet (12), and the airflow of the air outlet (12) flows through the flow guide cone (2);
the generatrix of the diversion cone (2) comprises a straight line section (21) and a curved line section (22) which are connected.
2. The mixed flow fan of claim 1, wherein: the calculation formula of the bus of the flow guide cone (2) is as follows:
wherein: t is an independent variable, the value range of t is (0, 1), P0 is the bottom end point of the guide cone (2), P1 is the connection point of a straight line segment (21) and a curve segment (22) of the guide cone (2), P3 is the top end point of the guide cone (2), and P2 is the arc control point of the curve segment (22).
3. The mixed flow fan of claim 1, wherein: along the direction of the rotation axis of the diversion cone (2), the ratio range of the dimension H1 corresponding to the straight line section (21) to the dimension H2 corresponding to the curve section (22) is 0 & lt H1/H2 & lt 1.
4. The mixed flow fan of claim 1, wherein: the mixed flow fan further comprises an inner shell (3), the inner shell (3) is arranged in the volute, an annular flow channel is formed between the inner shell (3) and the volute, one end of the annular flow channel forms the air outlet (12), and the flow guide cone (2) is arranged on the inner shell (3).
5. The mixed flow fan of claim 4, wherein: the part of the diversion cone (2) corresponding to the straight line section (21) is connected with the inner shell (3).
6. The mixed flow fan of claim 5, wherein: the straight line section (21) and the part of the inner shell (3) forming the air outlet (12) are arranged in a tangent mode.
7. The mixed flow fan of claim 4, wherein: the mixed flow fan further comprises a guide vane (4), the guide vane (4) is arranged in the annular flow channel, a first edge of the guide vane (4) is fixedly arranged on the outer surface of the inner shell (3), and a second edge of the guide vane (4) is fixedly arranged on the inner surface of the volute (1).
8. The mixed flow fan of claim 1, wherein: the outer surface of the volute (1) is a curved surface.
9. 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.
10. The mixed flow fan of claim 9, wherein: the volute (1) is positioned on two end faces of the table structure and is respectively provided with an air inlet (11) and an air outlet (12).
11. A ducted air conditioner characterized in that: a mixed flow fan comprising any of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221291413.6U CN217558625U (en) | 2022-05-27 | 2022-05-27 | Mixed flow fan and air duct machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221291413.6U CN217558625U (en) | 2022-05-27 | 2022-05-27 | Mixed flow fan and air duct machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217558625U true CN217558625U (en) | 2022-10-11 |
Family
ID=83499477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221291413.6U Active CN217558625U (en) | 2022-05-27 | 2022-05-27 | Mixed flow fan and air duct machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217558625U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023226393A1 (en) * | 2022-05-27 | 2023-11-30 | 珠海格力电器股份有限公司 | Mixed flow fan and duct type air conditioner |
-
2022
- 2022-05-27 CN CN202221291413.6U patent/CN217558625U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023226393A1 (en) * | 2022-05-27 | 2023-11-30 | 珠海格力电器股份有限公司 | Mixed flow fan and duct type air conditioner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN217558625U (en) | Mixed flow fan and air duct machine | |
| WO2023226366A1 (en) | Mixed-flow fan and air-duct type air conditioner | |
| CN114909328A (en) | Mixed flow fan and ducted air conditioner | |
| CN114922852A (en) | Mixed flow fan and ducted air conditioner | |
| CN114922848A (en) | Mixed flow fan and ducted air conditioner | |
| WO2023226398A1 (en) | Mixed flow fan and air duct-type air conditioner | |
| CN217421632U (en) | Mixed flow fan and ducted air conditioner | |
| CN217421627U (en) | Mixed flow fan and ducted air conditioner | |
| CN217582590U (en) | Mixed flow fan and air duct machine | |
| CN217950771U (en) | Mixed flow fan and ducted air conditioner | |
| CN217421631U (en) | Mixed flow fan and ducted air conditioner | |
| CN114909331A (en) | Mixed flow fan assembly and air duct machine | |
| CN114909329A (en) | Mixed flow fan and ducted air conditioner | |
| CN114909327A (en) | Mixed flow fan and ducted air conditioner | |
| CN217421629U (en) | Mixed flow fan and ducted air conditioner | |
| CN114893443A (en) | Mixed flow fan and ducted air conditioner | |
| CN114922849A (en) | Mixed flow fan and air duct machine | |
| CN217421633U (en) | Current collector, mixed flow fan and air duct machine | |
| CN109595198B (en) | Fan impeller | |
| CN217582586U (en) | Mixed flow fan and ducted air conditioner | |
| CN217421625U (en) | Mixed flow fan and ducted air conditioner | |
| CN217421628U (en) | Mixed flow fan and ducted air conditioner | |
| CN207961047U (en) | A kind of wind turbine of Wind Volume low-power consumption | |
| CN217421607U (en) | Impeller, mixed flow fan and ducted air conditioner | |
| CN217582587U (en) | Mixed flow fan assembly and air duct machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |