CN117803601A - Shaftless diagonal flow fan and smoke exhaust ventilator - Google Patents
Shaftless diagonal flow fan and smoke exhaust ventilator Download PDFInfo
- Publication number
- CN117803601A CN117803601A CN202311838902.8A CN202311838902A CN117803601A CN 117803601 A CN117803601 A CN 117803601A CN 202311838902 A CN202311838902 A CN 202311838902A CN 117803601 A CN117803601 A CN 117803601A
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- impeller
- diagonal flow
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- shaftless
- motor
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- 239000000779 smoke Substances 0.000 title claims abstract description 46
- 238000005728 strengthening Methods 0.000 claims abstract description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 39
- 230000007423 decrease Effects 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims 8
- 230000001360 synchronised effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 12
- 238000000926 separation method Methods 0.000 abstract description 8
- 239000003517 fume Substances 0.000 abstract description 3
- 238000000605 extraction Methods 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The invention relates to the technical field of smoke exhaust ventilator and discloses a shaftless diagonal flow fan and a smoke exhaust ventilator. This shaftless diagonal flow fan sets up the inside at the motor with the impeller, through motor drive impeller rotation, a plurality of diagonal flow blade intervals set up in strengthening hub's circumference, need not to set up the spindle in the motor for strengthen hub and do not receive the size restriction of motor, increased diagonal flow blade flow area, strengthen hub and be wing section wheel hub, weakened the air current separation of strengthening hub trailing edge, and then improved shaftless diagonal flow fan's fume extraction effect, reduced the noise.
Description
Technical Field
The invention relates to the technical field of smoke exhaust ventilators, in particular to a shaftless diagonal flow fan and a smoke exhaust ventilator.
Background
People generally generate a large amount of oil smoke in the process of making food in a kitchen, and the generated oil smoke not only affects the kitchen environment but also can cause great harm to kitchen operators. In order to be able to clean the environment of the kitchen, a range hood capable of discharging the oil smoke to the outside of the kitchen has been designed.
The air suction device of the existing smoke exhaust ventilator adopts an oblique flow fan, the oblique flow fan enables air to do centrifugal motion and axial motion, the wind pressure coefficient is higher than that of an axial flow fan, the flow coefficient is larger than that of the centrifugal fan, and meanwhile, the working condition area is wide. As shown in fig. 1, the blade root of the diagonal flow blade of the conventional diagonal flow fan is mounted on a hub 21 'containing a motor, and the conventional hub 21' is large due to the limitation of the size of the motor, thereby compressing the flow passage space; as shown in fig. 2, the curvature change of the conventional hub 21 'is not optimized, and the air flow entering the front edge 211' of the hub 21 'is quickly separated at the surface of the hub 21' and symmetrically wake vortices are formed at the rear edge 212 'of the hub 21', thereby generating vortex noise, and the exhaust effect of the conventional diagonal flow fan is poor and the noise is loud.
Disclosure of Invention
The invention aims to provide a shaftless diagonal flow fan and a smoke exhaust ventilator, which increase the flow passage area of diagonal flow blades, weaken the air flow separation of the tail edge of a reinforced hub, further improve the smoke exhaust effect of the shaftless diagonal flow fan and reduce noise.
To achieve the purpose, the invention adopts the following technical scheme:
the invention provides a shaftless diagonal flow fan, comprising:
a motor;
impeller, the impeller set up in the inside of motor, the motor is used for the drive impeller rotates, impeller includes strengthens wheel hub and a plurality of diagonal flow blade, strengthen wheel hub is wing section wheel hub, a plurality of diagonal flow blade interval set up in strengthen wheel hub's circumference, just diagonal flow blade's blade root with strengthen wheel hub links to each other, diagonal flow blade's apex with the motor links to each other.
This shaftless diagonal flow fan sets up the inside at the motor with the impeller, through motor drive impeller rotation, a plurality of diagonal flow blade intervals set up in strengthening hub's circumference, need not to set up the spindle in the motor for strengthen hub and do not receive the size restriction of motor, increased diagonal flow blade flow area, strengthen hub and be wing section wheel hub, weakened the air current separation of strengthening hub trailing edge, and then improved shaftless diagonal flow fan's fume extraction effect, reduced the noise.
As a preferable scheme of the shaftless diagonal flow fan, the impeller further comprises:
the impeller support, strengthen wheel hub wears to locate in the impeller support, and be located the axis position of impeller support, a plurality of diagonal flow blade's apex with the inner wall of impeller support links to each other, diagonal flow blade's apex passes through the impeller support with the motor links to each other.
The blade tips of the diagonal flow blades are arranged on the impeller bracket, so that the impeller forms a whole, and the impeller is convenient to be connected with the motor.
As a preferable mode of the shaftless diagonal flow fan, the motor includes:
a motor stator;
the motor rotor rotates and is arranged in the motor stator, and the impeller bracket is connected to the inside of the motor rotor and rotates synchronously with the motor rotor.
The motor comprises a motor stator and a motor rotor, and the motor rotor rotates relative to the motor stator so as to drive the impeller to rotate.
As a preferable scheme of the shaftless diagonal flow fan, the motor rotor is rotatably arranged in the motor stator through a bearing.
The motor rotor realizes relative rotation with the motor stator through a bearing.
As a preferable scheme of the shaftless diagonal flow fan, one end of the impeller, which is positioned at the front edge of the reinforced hub, is an impeller air inlet, and one end of the impeller, which is positioned at the tail edge of the reinforced hub, is an impeller air outlet; the shaftless diagonal flow fan further comprises:
the flow guide assembly is arranged at one end of the impeller, which is provided with the impeller air outlet, the flow guide assembly is connected with the motor stator, one end of the flow guide assembly, which is close to the impeller air outlet, is a guide vane inlet, one end of the flow guide assembly, which is far away from the impeller air outlet, is a guide vane outlet, and the tail edge of the reinforcing hub stretches into the flow guide assembly.
The air guiding component can guide the air output by the impeller so as to facilitate the discharge of air.
As a preferable solution of the shaftless diagonal flow fan, the flow guiding assembly includes:
the guide vane support is connected with the motor stator at one end and is communicated with the impeller support;
the guide vanes are arranged at intervals along the circumferential inner wall of the impeller support, the outer ring of each guide vane is connected with the inner wall of the impeller support, the inner ring of each guide vane extends towards the axis of the impeller support, the inner rings of each guide vane at least are close to one end of the reinforcing hub to form an avoidance hole, and the tail edge of the reinforcing hub extends into the avoidance hole.
The inner ring of the guide vane extends to the axis of the support of the impeller, the guide vane hub is omitted, the guide vane hub is not blocked, the guide vane flow guiding area is increased, the dynamic pressure-to-static pressure capability is enhanced, and the improvement of the pressure of the fan is facilitated.
As a preferable scheme of the shaftless diagonal flow fan, a plurality of guide vanes are arranged on the circumferential inner wall of the guide vane support at equal intervals.
The guide vanes are arranged on the circumferential inner wall of the guide vane support at equal intervals, so that air outlet is uniform.
As a preferable mode of the shaftless diagonal flow fan, a plurality of diagonal flow blades are arranged at equal intervals in the circumferential direction of the reinforcing hub.
The oblique flow blades are arranged at equal intervals on the circumference of the reinforced hub so as to uniformly guide the air inlet.
As a preferable mode of the shaftless diagonal flow fan, the diameter of the reinforcing hub increases from the front edge of the reinforcing hub to the tail edge of the reinforcing hub, and then decreases, and the position of the maximum diameter of the reinforcing hub is located at one end of the reinforcing hub, which is close to the tail edge.
The maximum diameter of the reinforcing hub is located at the end of the reinforcing hub near the trailing edge, which has the effect of suppressing and delaying the separation of the air flow.
The invention also provides a range hood, comprising:
the shaftless diagonal flow fan is arranged in the case;
the smoke collecting cavity is arranged at the lower part of the case, and an impeller air inlet of the shaftless diagonal flow fan is arranged towards the smoke collecting cavity and is communicated with the smoke collecting cavity.
The shaftless diagonal flow fan is arranged in the case of the smoke exhaust ventilator, the impeller air inlet of the shaftless diagonal flow fan is arranged towards the smoke collecting cavity and is communicated with the smoke collecting cavity, and the smoke exhaust ventilator has good smoke exhaust effect and low noise through the shaftless diagonal flow fan.
The invention has the beneficial effects that:
according to the shaftless diagonal flow fan provided by the invention, the impeller is arranged in the motor, the impeller is driven to rotate by the motor, and the plurality of diagonal flow blades are arranged at intervals in the circumferential direction of the reinforcing hub, so that the reinforcing hub is not limited by the size of the motor, the flow passage area of the diagonal flow blades is increased, the reinforcing hub is an airfoil hub, the air flow separation of the tail edge of the reinforcing hub is weakened, the smoke discharging effect of the shaftless diagonal flow fan is improved, and the noise is reduced.
The shaftless diagonal flow fan is arranged in the case of the smoke exhaust ventilator, the impeller air inlet of the shaftless diagonal flow fan is arranged towards the smoke collecting cavity and is communicated with the smoke collecting cavity, and the smoke exhaust ventilator has good smoke exhaust effect and low noise through the shaftless diagonal flow fan.
Drawings
FIG. 1 is a cross-sectional view of a diagonal flow fan as provided in the prior art;
FIG. 2 is a cross-sectional view of an impeller of a diagonal flow fan as provided in the prior art;
FIG. 3 is a cross-sectional view I of a shaftless diagonal flow fan provided by the present invention;
FIG. 4 is a cross-sectional view of a shaftless diagonal flow fan provided by the present invention with the flow guide assembly removed;
FIG. 5 is a schematic view of a flow guiding assembly according to the present invention;
FIG. 6 is a second cross-sectional view of the shaftless diagonal flow fan provided by the present invention;
FIG. 7 is a schematic view of a part of the structure of a reinforcing hub provided by the present invention;
fig. 8 is a schematic structural view of the range hood provided by the invention.
In the figure:
100. shaftless diagonal flow fan; 200. a chassis; 300. a smoke collecting cavity;
1. a motor; 11. a motor stator; 12. a motor rotor; 13. a bearing;
2. an impeller; 21. reinforcing the hub; 211. a leading edge; 212. a trailing edge; 22. diagonal flow vanes; 23. an impeller support; 24. an impeller air inlet; 25. an impeller air outlet;
3. a flow guiding assembly; 31. a guide vane support; 32. a guide vane; 33. avoidance holes; 34. a guide vane inlet; 35. a guide vane outlet;
21' and a hub; 211', leading edge; 212', trailing edge; 30', a guide vane hub; 32', guide vanes.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
As shown in fig. 1, the blade root of the diagonal flow blade of the conventional diagonal flow fan is mounted on a hub 21 'containing a motor, and the conventional hub 21' is large due to the limitation of the size of the motor, thereby compressing the flow passage space; as shown in fig. 2, the curvature change of the conventional hub 21 'is not optimized, and the air flow entering the front edge 211' of the hub 21 'is quickly separated at the surface of the hub 21' and symmetrically wake vortices are formed at the rear edge 212 'of the hub 21', thereby generating vortex noise, and the exhaust effect of the conventional diagonal flow fan is poor and the noise is loud.
In order to solve the above-mentioned problems, as shown in fig. 3 and 4, the present embodiment provides a shaftless diagonal flow fan 100, the shaftless diagonal flow fan 100 includes a motor 1 and an impeller 2, the impeller 2 is disposed inside the motor 1, the motor 1 is used for driving the impeller 2 to rotate, the impeller 2 includes a reinforcing hub 21 and a plurality of diagonal flow blades 22, one end of the impeller 2 located at a front edge 211 of the reinforcing hub 21 is an impeller air inlet 24, one end of the impeller 2 located at a rear edge 212 of the reinforcing hub 21 is an impeller air outlet 25, the reinforcing hub 21 is an airfoil hub, the plurality of diagonal flow blades 22 are disposed at intervals in a circumferential direction of the reinforcing hub 21, and blade roots of the diagonal flow blades 22 are connected with the reinforcing hub 21, and blade tips of the diagonal flow blades 22 are connected with the motor 1.
This shaftless diagonal flow fan 100 sets up impeller 2 in motor 1's inside, through motor 1 drive impeller 2 rotation, a plurality of diagonal flow blades 22 interval set up in the circumference of strengthening hub 21, need not to set up the counter shaft in the motor 1 for strengthening hub 21 and not receiving motor 1's size restriction, increased diagonal flow blade 22 flow area, strengthening hub 21 is wing type wheel hub, weakened the air current separation of strengthening hub 21 trailing edge 212, and then improved shaftless diagonal flow fan 100's fume exhaust effect, reduced the noise.
Preferably, the plurality of diagonal flow blades 22 are equally spaced around the reinforcing hub 21 to provide a more uniform guide for the incoming air.
As shown in fig. 3 and 5, the impeller 2 further includes an impeller support 23, the reinforcing hub 21 is disposed in the impeller support 23 in a penetrating manner, and is located at an axial position of the impeller support 23, tips of the plurality of diagonal blades 22 are connected to an inner wall of the impeller support 23, and tips of the diagonal blades 22 are connected to the motor 1 through the impeller support 23. The tips of the diagonal flow blades 22 are mounted on the impeller support 23 so that the impeller 2 is formed as a unit so that the impeller 2 is connected to the motor 1.
As shown in fig. 3 and 4, the motor 1 includes a motor stator 11 and a motor rotor 12, the motor rotor 12 is rotatably disposed in the motor stator 11, and an impeller bracket 23 is connected to the inside of the motor rotor 12 and rotates synchronously with the motor rotor 12, and the motor rotor 12 rotates relative to the motor stator 11, thereby driving the impeller 2 to rotate.
Specifically, the motor stator 11 includes a motor stator housing and a plurality of groups of motor stator windings, the motor stator housing is of a cylindrical structure, and the plurality of groups of motor stator windings are arranged on the circumferential inner wall of the motor stator housing at intervals. The motor rotor 12 includes a motor rotor housing and a plurality of groups of motor rotor permanent magnets, the motor rotor housing is of a cylindrical structure, the motor rotor housing is mounted in a motor stator housing, the plurality of groups of motor rotor permanent magnets are arranged on the circumferential outer wall of the motor rotor housing at intervals, and a motor stator winding and the motor rotor permanent magnets are matched to form a rotational driving force.
Further, the motor 1 further comprises a bearing 13, and the motor rotor 12 is rotatably arranged in the motor stator 11 through the bearing 13. The motor rotor 12 is brought into relative rotation with the motor stator 11 via bearings 13. In this embodiment, two bearings 13 are provided, and two ends of the motor rotor 12 are rotatably mounted in the motor stator 11 through a bearing 13, respectively, so as to ensure stable rotation of the motor rotor 12.
Specifically, the bearing 13 includes a bearing outer ring, a bearing inner ring, a roller bracket and bearing rollers, the bearing inner ring is disposed in the bearing outer ring, the roller bracket is disposed between the bearing outer ring and the bearing inner ring, a plurality of bearing rollers are disposed on the roller bracket, the bearing outer ring is connected with an inner wall of the motor stator housing, the bearing inner ring is connected with an outer wall of the motor rotor housing, and the bearing inner ring and the bearing outer ring can rotate relatively to realize rotation of the motor rotor 12 relative to the motor stator 11.
Optionally, as shown in fig. 3, 5 and 6, the shaftless diagonal flow fan 100 further includes a guide component 3, the guide component 3 is disposed at one end of the impeller 2 where the impeller air outlet 25 is disposed, the guide component 3 is connected with the motor stator 11, one end of the guide component 3 near the impeller air outlet 25 is a guide vane inlet 34, one end of the guide component 3 far away from the impeller air outlet 25 is a guide vane outlet 35, and a tail edge 212 of the reinforcing hub 21 extends into the guide component 3. The air guiding component 3 can guide the air output by the impeller 2 so as to facilitate the discharge of air.
Further, the flow guiding assembly 3 comprises a guide vane support 31 and a guide vane 32, one end of the guide vane support 31 is connected with the motor stator 11, and the guide vane support 31 is communicated with the impeller support 23; the plurality of guide vanes 32 are arranged at intervals along the circumferential inner wall of the impeller support 23, the outer ring of the guide vanes 32 is connected with the inner wall of the impeller support 23, the inner ring of the guide vanes 32 extends towards the axis of the impeller support 23, the inner rings of the plurality of guide vanes 32 at least enclose into avoidance holes 33 at one end close to the reinforcing hub 21, and the tail edge 212 of the reinforcing hub 21 extends into the avoidance holes 33. The inner ring of the guide vane 32 extends to the axis of the impeller bracket 23, a guide vane hub 30 ' (see fig. 1) positioned at the inner ring of the guide vane 32 ' in the prior art is omitted, the guide vane hub 30 ' is not blocked, the guide vane 32 flow guiding area is increased, the dynamic pressure-to-static pressure capability is enhanced, and the pressure of the shaftless diagonal flow fan 100 is improved.
Preferably, the plurality of guide vanes 32 are equally spaced on the circumferential inner wall of the guide vane support 31, so that the air outlet is uniform.
As shown in fig. 7, the diameter of the reinforcing hub 21 increases from the leading edge 211 of the reinforcing hub 21 to the trailing edge 212 of the reinforcing hub 21, and then decreases, and the position a of the maximum diameter of the reinforcing hub 21 is located at the end of the reinforcing hub 21 near the trailing edge 212, which has the effect of suppressing and delaying the separation of the air flow.
The shaftless diagonal flow fan 100 adopts a shaftless motor, the impeller 2 is not limited by the accommodating position of the motor 1, the size of the reinforced hub 21 can be compressed, the flow passage space is increased, the airflow circulation is increased, and the performance is improved. Providing the reinforcing hub 21 as an airfoil can further reduce the resistance of the reinforcing hub 21 to flow, the airfoil surface is less prone to air flow separation, and no significant wake vortices are generated at the trailing edge 212 of the reinforcing hub 21.
As shown in fig. 8, the present embodiment further provides a range hood, where the range hood includes a case 200 and a smoke collecting cavity 300, the case 200 is internally provided with the shaftless diagonal flow fan 100, a motor stator housing of a motor 1 of the shaftless diagonal flow fan 100 is connected with the case 200, and a vane bracket 31 of the shaftless diagonal flow fan 100 is connected with the case 200 to fix the shaftless diagonal flow fan 100; the smoke collecting cavity 300 is arranged at the lower part of the case 200, and the impeller air inlet 24 of the shaftless diagonal flow fan 100 is arranged towards the smoke collecting cavity 300 and is communicated with the smoke collecting cavity 300.
When the smoke collecting device is used, the shaftless diagonal flow fan 100 is started, smoke is sucked into the smoke collecting cavity 300, and the smoke is discharged after passing through the shaftless diagonal flow fan 100, so that the smoke is discharged.
The shaftless diagonal flow fan 100 is arranged in the case 200 of the smoke ventilator, the impeller air inlet 24 of the shaftless diagonal flow fan 100 is arranged towards the smoke collecting cavity 300 and is communicated with the smoke collecting cavity 300, and the smoke ventilator has better smoke discharging effect and lower noise through the shaftless diagonal flow fan 100.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the invention. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (10)
1. Shaftless diagonal flow fan, its characterized in that includes:
an electric motor (1);
impeller (2), impeller (2) set up in the inside of motor (1), motor (1) are used for the drive impeller (2) rotate, impeller (2) are including strengthening wheel hub (21) and a plurality of diagonal flow blade (22), strengthen wheel hub (21) be wing section wheel hub, a plurality of diagonal flow blade (22) interval set up in strengthen wheel hub (21)'s circumference, just the blade root of diagonal flow blade (22) with strengthen wheel hub (21) links to each other, the apex of diagonal flow blade (22) with motor (1) links to each other.
2. The shaftless diagonal flow fan according to claim 1, characterized in that the impeller (2) further comprises:
impeller support (23), strengthen wheel hub (21) wear to locate in impeller support (23), and be located the axis position of impeller support (23), a plurality of the apex of diagonal flow blade (22) with the inner wall of impeller support (23) links to each other, the apex of diagonal flow blade (22) pass through impeller support (23) with motor (1) links to each other.
3. Shaftless diagonal flow fan according to claim 2, characterized in that the motor (1) comprises:
a motor stator (11);
the motor rotor (12), motor rotor (12) rotate set up in motor stator (11), impeller support (23) connect in motor rotor (12) inside, and with motor rotor (12) synchronous rotation.
4. A shaftless diagonal flow fan according to claim 3, characterized in that the motor rotor (12) is rotatably arranged in the motor stator (11) by means of bearings (13).
5. A shaftless diagonal flow fan according to claim 3, characterized in that one end of the impeller (2) at the front edge (211) of the reinforcement hub (21) is an impeller air inlet (24), and one end of the impeller (2) at the rear edge (212) of the reinforcement hub (21) is an impeller air outlet (25); the shaftless diagonal flow fan further comprises:
the air guide assembly (3), air guide assembly (3) set up in the one end of impeller (2) be provided with impeller air outlet (25), air guide assembly (3) with motor stator (11) link to each other, the one end that is close to of air guide assembly (3) impeller air outlet (25) is stator vane inlet (34), the one end that keeps away from of air guide assembly (3) is stator vane outlet (35), tail edge (212) of reinforcing hub (21) stretch into in air guide assembly (3).
6. The shaftless diagonal flow fan according to claim 5, wherein the flow guide assembly (3) comprises:
a guide vane support (31), wherein one end of the guide vane support (31) is connected with the motor stator (11), and the guide vane support (31) is communicated with the impeller support (23);
the guide vanes (32), a plurality of guide vanes (32) are arranged along the circumferential inner wall interval of the impeller support (23), the outer ring of each guide vane (32) is connected with the inner wall of the impeller support (23), the inner ring of each guide vane (32) extends towards the axis of the impeller support (23), the inner rings of the guide vanes (32) are at least close to one end of the reinforcing hub (21) to form an avoidance hole (33), and the tail edge (212) of the reinforcing hub (21) stretches into the avoidance hole (33).
7. The shaftless diagonal flow fan according to claim 6, characterized in that a plurality of the guide vanes (32) are arranged at equal intervals on the circumferential inner wall of the guide vane support (31).
8. Shaftless diagonal flow fan according to any of claims 1-7, characterized in that a plurality of said diagonal flow blades (22) are equally spaced in the circumferential direction of the reinforcement hub (21).
9. The shaftless diagonal flow fan according to any of claims 1-7, characterized in that the diameter of the reinforcement hub (21) increases and decreases from the leading edge (211) of the reinforcement hub (21) to the trailing edge (212) of the reinforcement hub (21), the position of the maximum diameter of the reinforcement hub (21) being located at the end of the reinforcement hub (21) near the trailing edge (212).
10. Smoke ventilator, its characterized in that includes:
a chassis (200), wherein the shaftless diagonal flow fan according to any one of claims 1-9 is arranged in the chassis (200);
the smoke collecting cavity (300), the smoke collecting cavity (300) is arranged at the lower part of the case (200), and an impeller air inlet (24) of the shaftless diagonal flow fan is arranged towards the smoke collecting cavity (300) and is communicated with the smoke collecting cavity (300).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311838902.8A CN117803601A (en) | 2023-12-28 | 2023-12-28 | Shaftless diagonal flow fan and smoke exhaust ventilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311838902.8A CN117803601A (en) | 2023-12-28 | 2023-12-28 | Shaftless diagonal flow fan and smoke exhaust ventilator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117803601A true CN117803601A (en) | 2024-04-02 |
Family
ID=90427011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311838902.8A Pending CN117803601A (en) | 2023-12-28 | 2023-12-28 | Shaftless diagonal flow fan and smoke exhaust ventilator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117803601A (en) |
-
2023
- 2023-12-28 CN CN202311838902.8A patent/CN117803601A/en active Pending
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