CN113028502A - Fan and ventilation equipment - Google Patents
Fan and ventilation equipment Download PDFInfo
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- CN113028502A CN113028502A CN202110329763.0A CN202110329763A CN113028502A CN 113028502 A CN113028502 A CN 113028502A CN 202110329763 A CN202110329763 A CN 202110329763A CN 113028502 A CN113028502 A CN 113028502A
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- mixed
- axial flow
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- 238000009423 ventilation Methods 0.000 title claims abstract description 22
- 241000886569 Cyprogenia stegaria Species 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims description 35
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 7
- 238000004378 air conditioning Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000009792 diffusion process Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 3
- 210000004907 gland Anatomy 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
- F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/20—Casings or covers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/007—Ventilation with forced flow
Abstract
The invention provides a fan and ventilation equipment, wherein the fan comprises a fan shell, an axial flow wind wheel and an annular mixed flow wind wheel, wherein an axial flow channel and an annular mixed flow channel which circumferentially surrounds the outer side of the axial flow channel are formed in the fan shell; the axial flow wind wheel is rotatably arranged in the axial flow runner; the annular mixed flow wind wheel is installed on the outer side of the axial flow wind wheel in a circumferential rotating mode. According to the invention, the annular mixed flow channel of the axial flow channel is arranged, so that airflow can be blown out from the air outlet end along the axis and can also be blown out from the air outlet end along the direction deviating from the axial direction, and the air quantity is effectively increased while large-range covering air supply is realized.
Description
Technical Field
The invention relates to the technical field of ventilation equipment, in particular to a fan and ventilation equipment.
Background
The existing ventilation equipment mostly uses an axial flow fan or a mixed flow fan independently, when the axial flow fan is used, the flow path of air flow enters the fan along the direction of a rotating shaft, the air flow which does work by the fan flows out of the fan along the axial direction, the outlet air flow is sent out along an outlet in a more concentrated manner by using a rotating center, and the coverage range of the outlet air flow is small; when the mixed flow fan is used, the flow path of the air flow enters the fan along the direction of a rotating shaft, the direction of the air outlet flow after the work of the fan deviates from the direction of the rotating shaft of the fan by a certain angle theta (generally theta is less than 90 degrees), the air outlet flow is in a diffusion state integrally, and a large windless area exists at the position of an outlet close to the axis, so that the existing ventilation equipment is difficult to simultaneously meet the requirements of large-range space coverage air supply and large air volume air supply.
Disclosure of Invention
The invention mainly aims to provide a fan and a ventilation device, and aims to solve the problem that the existing ventilation device is difficult to meet the requirements of large-range space coverage air supply and large-air-volume air supply at the same time.
To achieve the above object, the present invention provides a fan, including:
the fan comprises a fan shell, wherein an axial flow channel and an annular mixed flow channel which circumferentially surrounds the outer side of the axial flow channel are formed in the fan shell;
the axial flow wind wheel is rotatably arranged in the axial flow channel; and the number of the first and second groups,
and the annular mixed flow wind wheel is arranged on the outer side of the axial flow wind wheel in a circumferential rotating manner.
Optionally, the annular mixed-flow wind wheel comprises an annular mixed-flow hub and a plurality of mixed-flow wind blades arranged on one side, back to the axial flow wind wheel, of the annular mixed-flow hub, and the plurality of mixed-flow wind blades are arranged at intervals along the circumferential direction of the annular mixed-flow hub; and/or the presence of a gas in the gas,
the annular mixed-flow wind wheel comprises an annular mixed-flow wheel hub and a plurality of mixed-flow wind blades arranged on one side, back to the axial-flow wind wheel, of the annular mixed-flow wheel hub, wherein the number of the mixed-flow wind blades is N2, and is more than or equal to 3 and less than or equal to N2 and less than or equal to 100.
Optionally, one side of the plurality of mixed flow blades, which faces away from the annular mixed flow hub, is provided with an annular cover plate, and a space defined between the annular cover plate and the annular mixed flow hub forms part of the annular mixed flow channel.
Optionally, the fan housing includes an annular air inlet housing disposed on a side of the annular cover plate opposite to the air outlet end of the fan housing, an inner cavity of the annular air inlet housing forms part of the axial flow channel, an annular channel penetrates through a side end face of the annular air inlet housing, an annular cavity is formed between the annular cover plate and the annular mixed flow hub, and the annular channel and the annular cavity form the annular mixed flow channel together.
Optionally, a plurality of guide vanes are arranged in the annular passage, and the guide vanes are arranged at intervals along the circumferential direction of the annular passage; and/or the presence of a gas in the gas,
the annular channel is internally provided with a plurality of guide vanes, the number of the guide vanes is N1, and 2 is less than or equal to N1 is less than or equal to 100.
Optionally, the annular cover sealing plate and the annular air inlet shell are connected into a whole.
Optionally, the annular cover plate is connected with the plurality of mixed flow blades into a whole.
Optionally, the fan housing includes an annular air inlet housing disposed on a side of the annular cover plate opposite to the air outlet end of the fan housing;
the fan further includes:
the motor base of the mixed flow driving motor is arranged on the annular air inlet shell, and the mixed flow driving motor is provided with a mixed flow motor output shaft extending along the axial direction of the fan; and the number of the first and second groups,
the gear transmission structure comprises a gear ring and a driving gear meshed with the gear ring, wherein the gear ring is sleeved on the outer side of the mixed flow wind wheel, the outer edges of the mixed flow fan blades are connected with the inner side wall of the gear ring, and the driving gear is sleeved on the output shaft of the mixed flow motor.
Optionally, the mixed flow driving motor and the driving gear form a driving group, the mixed flow driving motor and the driving gear are arranged in a one-to-one correspondence manner, the driving group is provided with a plurality of driving gears, the driving gears are distributed on the peripheral side of the gear ring, and each driving gear in the driving group is meshed with the gear ring in an external manner.
Optionally, the inner cavity of the annular mixed flow hub forms part of the axial flow channel.
Optionally, the axial flow wind wheel comprises axial flow blades, and outer ends of the axial flow blades are connected with the inner side of the annular mixed flow hub.
Optionally, the axial flow wind wheel comprises an axial flow hub and a plurality of axial flow blades arranged on one side of the axial flow hub facing the annular mixed flow wind wheel, and the plurality of axial flow blades are arranged at intervals along the circumferential direction of the axial flow hub; and/or the presence of a gas in the gas,
the axial flow wind wheel comprises an axial flow hub and a plurality of axial flow fan blades arranged on one side, facing the annular mixed flow wind wheel, of the axial flow hub, the number of the axial flow fan blades is N3, and is more than or equal to 2 and less than or equal to N3 and less than or equal to 100.
The present invention also provides a ventilation apparatus including a fan, the fan including: .
The fan comprises a fan shell, wherein an axial flow channel and an annular mixed flow channel which circumferentially surrounds the outer side of the axial flow channel are formed in the fan shell;
the axial flow wind wheel is rotatably arranged in the axial flow channel; and the number of the first and second groups,
and the annular mixed flow wind wheel is arranged on the outer side of the axial flow wind wheel in a circumferential rotating manner.
Optionally, the ventilation device is an air conditioner indoor unit;
the air-conditioning indoor unit further comprises:
the shell forms an annular cavity which penetrates along the vertical direction, the side end of the annular cavity is provided with an air inlet, and the lower end of the annular cavity is provided with an air outlet; and the number of the first and second groups,
the air outlet grid is arranged at the air outlet;
the fan is arranged in the annular cavity, and the air outlet end of the fan shell is arranged corresponding to the air outlet.
Optionally, the air outlet grille comprises:
the first air guiding rib is spirally extended along the rotation axis of the fan as a center; and the number of the first and second groups,
the second air guiding rib group comprises a plurality of second air guiding ribs arranged at intervals along the circumferential direction of the shell, and each second air guiding rib is arranged along the radial extension of the fan and connected with the first air guiding rib.
Optionally, the indoor unit of the air conditioner further comprises an annular heat exchanger arranged in the annular cavity, an air inlet end of the annular heat exchanger is arranged corresponding to the air inlet, and an air outlet end of the annular heat exchanger is arranged on the side wall of the inner cavity of the annular heat exchanger;
wherein, the fan is arranged in the inner cavity of the annular radiator.
Optionally, the annular heat exchanger is provided with an opening along a circumferential direction thereof, and a circuit board assembly is hermetically mounted in the opening.
Optionally, the indoor unit of the air conditioner further comprises a sealing structure, the sealing structure comprises an annular sealing plate arranged at the lower end of the annular heat exchanger and a sealing baffle plate arranged at the upper end of the annular sealing plate, the sealing baffle plate is arranged corresponding to the opening, and an installation space is defined among the sealing baffle plate, the annular sealing plate and the outer shell;
the circuit board assembly is correspondingly arranged in the mounting space.
In the technical scheme of the invention, an axial flow channel and an annular mixed flow channel outside the axial flow channel are formed in the fan shell, the axial flow wind wheel is arranged in the axial flow channel, the annular mixed flow wind wheel is arranged outside the axial flow wind wheel, and when the fan works, the axial flow wind wheel forms airflow in the axial flow channel and blows out from the air outlet end of the fan shell; the annular mixed flow wind wheel forms airflow in the annular mixed flow channel and blows out from the air outlet end of the fan shell, namely the axial flow channel and the mixed flow channel simultaneously blow out air, and therefore large-range covering air supply is achieved, and meanwhile air volume is effectively improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic perspective view of a fan according to a first embodiment of the present invention;
FIG. 2 is an exploded view of the perspective structure of FIG. 1;
FIG. 3 is a schematic cross-sectional view taken along A-A of FIG. 1;
FIG. 4 is a schematic perspective view of the annular mixed-flow wind wheel of FIG. 1;
FIG. 5 is a schematic perspective view of the annular intake housing of FIG. 1;
FIG. 6 is a perspective view of an annular mixed-flow wind wheel in a second embodiment;
fig. 7 is a schematic perspective view of the axial-flow wind wheel in fig. 1;
FIG. 8 is a schematic perspective view of the additional mixed flow driving motor and the gear transmission structure of FIG. 1;
FIG. 9 is a perspective view of the drive gear of FIG. 8;
FIG. 10 is a perspective view of a fan in a third embodiment;
fig. 11 is an enlarged schematic view of a portion B of fig. 10;
fig. 12 is a schematic perspective view of an indoor unit of an air conditioner according to the present invention;
FIG. 13 is a schematic cross-sectional view taken along C-C of FIG. 12;
fig. 14 is an exploded view of the indoor unit of the air conditioner in fig. 12;
FIG. 15 is an assembly view of the annular heat exchanger and seal arrangement of FIG. 14;
fig. 16 is a schematic perspective view of the air outlet grille in fig. 14;
fig. 17 is a schematic cross-sectional view along D-D in fig. 16.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) | |
| 100 | Fan with |
621 | |
|
| 1 | Fan shell | | Axial direction | |
| 11 | Annular air inlet casing | C1 | |
|
| 111 | Inner cavity | C2 | Annular |
|
| 112 | |
200 | |
|
| 12 | Air outlet end of fan shell | 210 | |
|
| 2 | Axial flow wind wheel | 220 | |
|
| 21 | Axial- |
300 | |
|
| 22 | Axial |
310 | First |
|
| 3 | Annular mixed |
320 | Second air guiding |
|
| 31 | Annular mixed |
321 | Second |
|
| 32 | Mixed |
400 | |
|
| 4 | Annular sealing cover plate | 410 | |
|
| 5 | Mixed-flow driving motor | 420 | |
|
| 51 | Mixed-flow |
500 | |
|
| 6 | Gear transmission structure | 510 | |
|
| 61 | Gear ring | 520 | |
|
| 62 | |
600 | Circuit board assembly |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indication is involved in the embodiment of the present invention, the directional indication is only used for explaining the relative positional relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The existing ventilation equipment mostly uses an axial flow fan or a mixed flow fan independently, the outlet air flow of the axial flow fan is sent out along an outlet in a concentrated manner by a rotation center, and the coverage range of the outlet air flow is small; the whole air outlet flow of the mixed flow fan is in a diffusion state, and a large windless area exists at the position of an outlet close to the axis, so that the requirements of large-range space coverage air supply and large-air-volume air supply are difficult to meet simultaneously.
In view of the above, the present invention provides a fan and a ventilation apparatus. Fig. 1 to 11 illustrate an embodiment of a fan according to the present invention, and fig. 12 to 17 illustrate an embodiment of a ventilator according to the present invention.
Referring to fig. 1 to 3, the present invention provides a fan 100, wherein the fan 100 includes: the wind driven generator comprises a fan shell 1, an axial flow wind wheel 2 and an annular mixed flow wind wheel 3, wherein an axial flow channel C1 and an annular mixed flow channel C2 which circumferentially surrounds the outer side of the axial flow channel C1 are formed in the fan shell 1; the axial flow wind wheel 2 is rotatably arranged in the axial flow channel C1; and the annular mixed flow wind wheel 3 is arranged on the outer side of the axial flow wind wheel 2 in a circumferential rotating manner.
In the technical scheme of the invention, an axial flow channel C1 and an annular mixed flow channel C2 outside the axial flow channel C1 are formed in the fan housing 1, the axial flow wind wheel 2 is arranged in the axial flow channel C1, the annular mixed flow wind wheel 3 is arranged outside the axial flow wind wheel 2, and when the fan 100 works, the axial flow wind wheel 2 forms airflow in the axial flow channel C1 and blows out from the air outlet end 12 of the fan housing; the annular mixed flow wind wheel 3 forms airflow in the annular mixed flow channel C2 and blows out from the air outlet end 12 of the fan casing, that is, the axial flow channel C1 and the mixed flow channel simultaneously blow out, so that large-range coverage air supply is realized, and the air volume is effectively increased.
In the present invention, the annular mixed-flow wind wheel 3 includes an annular mixed-flow wheel hub 31 and a plurality of mixed-flow wind blades 32 (please refer to fig. 4) disposed on a side of the annular mixed-flow wheel hub 31 opposite to the axial flow wind wheel 2, the plurality of mixed-flow wind blades 32 are disposed at intervals along a circumferential direction of the annular mixed-flow wheel hub 31, the annular mixed-flow wind wheel 3 rotates to drive the plurality of mixed-flow wind blades 32 to rotate, the rotation of the mixed-flow wind blades 32 causes air pressures on two sides of the mixed-flow wind blades 32 to be different, an air flow is formed in the annular mixed-flow channel C2, and the air flow is blown out from an air outlet end of the fan housing 1.
In the present invention, the annular mixed-flow wind wheel 3 includes an annular mixed-flow hub 31 and a plurality of mixed-flow blades 32 (please refer to fig. 4) disposed on a side of the annular mixed-flow hub 31 facing away from the axial-flow wind wheel 2, where the number of the mixed-flow blades 32 is N2, and 3 ≦ N2 ≦ 100, specifically, in this embodiment, the number N2 ═ 27 of the mixed-flow blades 32 ensures balance of the annular mixed-flow wind wheel 3, prevents the annular mixed-flow wind wheel 3 from generating more resonances when rotating at a high speed, and prevents the mixed-flow blades from breaking due to resonance fatigue.
It should be noted that, the setting positions of the plurality of mixed flow blades 32 and the number of the mixed flow blades 32 may be set alternatively or simultaneously, in this embodiment, the setting positions of the plurality of mixed flow blades 32 and the number of the mixed flow blades 32 are set simultaneously, which not only improves the service life of the annular mixed flow wind wheel 3, but also increases the air output of the annular mixed flow channel C2.
In order to better blow out the airflow formed in the annular mixed flow channel C2 from the air outlet end of the fan casing 1, an annular cover plate 4 is disposed on a side of the plurality of mixed flow blades 32 facing away from the annular mixed flow hub 31, and a space defined between the annular cover plate 4 and the annular mixed flow hub 31 forms part of the annular mixed flow channel C2, so as to prevent the airflow generated by the annular mixed flow rotor 3 in the annular mixed flow channel C2 from being too dispersed during blowing out.
Referring to fig. 5, the fan housing 1 includes an annular air inlet housing 11 disposed on a side of the annular cover plate 4 opposite to the air outlet end 12 of the fan housing, an inner cavity 111 of the annular air inlet housing 11 forms part of the axial flow channel C1, an annular channel penetrates through a side end surface of the annular air inlet housing 11, an annular cavity is formed between the annular cover plate 4 and the annular mixed flow hub 31, and the annular channel and the annular cavity form the annular mixed flow channel C2 together. And the annular air inlet shell 11 is arranged, so that the serious flow separation caused by the sudden change of the blade profile and the flow channel is avoided, and the unsteady flow separation in the flow channel of the fan is effectively reduced.
In the invention, a plurality of guide vanes 112 are arranged in the annular channel, and the guide vanes 112 are arranged at intervals along the circumferential direction of the annular channel, so that the airflow at the position of an air inlet end flows smoothly, and the generation of vortex is avoided.
In the present invention, a plurality of guide vanes 112 are arranged in the annular channel, the number of the guide vanes is N1, and 2 ≦ N1 ≦ 100, specifically, in order to improve the flow stability of the airflow, in this embodiment, the number of the guide vanes N1 is 25, so as to avoid the influence caused by resonance and ensure the flow stability.
It should be noted that the two features described above, namely the installation positions of the guide vanes 112 and the number of the guide vanes 112, may be set alternatively or simultaneously, and in this embodiment, the two features, namely the installation positions of the guide vanes 112 and the number of the guide vanes 112, are set simultaneously, so as to improve the stability of the flow guiding.
In order to avoid large flow separation and loss during gas flowing, in the present embodiment, the annular gland plate 4 and the annular air intake housing 11 are connected into a whole (see fig. 5), and a space defined between the annular gland plate 4 and the annular mixed flow hub 31 is communicated to form a part of the annular mixed flow channel C2 and a part of the annular mixed flow channel C2 formed in the fan housing 1, so that the air flow flows through the annular mixed flow channel C2 more stably, and the air flow loss is reduced.
In this embodiment, a mixed flow gap δ is formed between the annular cover plate 4 and the edge of each mixed flow blade 321(please refer to fig. 5), the interference of the annular sealing plate 4 to the rotation of the mixed flow fan blades 32 is avoided.
In another embodiment, the annular shroud plate 4 is connected to the plurality of mixed flow blades 32 to form a whole (see fig. 6), and the annular shroud plate 4 can rotate synchronously with the plurality of mixed flow blades 32, so that the annular mixed flow rotor 3 becomes a closed rotor, thereby increasing the airflow rate in the annular mixed flow channel C2 and reducing the airflow loss.
In the invention, the inner cavity 111 of the annular mixed flow hub 31 forms part of the axial flow channel C1, so that the axial flow channel C1 and the mixed flow channel are superposed, and the air volume is effectively increased while the air is supplied in a large-range covering manner.
In the present invention, the axial flow wind wheel 2 includes an axial flow hub 21 and a plurality of axial flow blades 22 (see fig. 7) disposed on one side of the axial flow hub 21 facing the annular mixed flow wind wheel 3, the plurality of axial flow blades 22 are disposed at intervals along a circumferential direction of the axial flow hub 21, the axial flow wind wheel 2 rotates to drive the plurality of axial flow blades 22 to rotate, the rotation of the axial flow blades 22 causes air pressure at two sides of the axial flow blades 22 to be different, an air flow is formed in the axial flow channel C1, and the air flow is blown out from an air outlet end of the fan housing 1.
In the present invention, the axial flow wind wheel 2 includes an axial flow hub 21 and a plurality of axial flow blades 22 (please refer to fig. 7) disposed on a side of the axial flow hub 21 facing the annular mixed flow wind wheel 3, where the number of the axial flow blades 22 is 2 ≦ N3 ≦ 60, specifically, in this embodiment, the number N3 of the axial flow blades 22 is 4, so as to improve the air outlet efficiency of the axial flow wind wheel 2.
It should be noted that, the two features of the arrangement positions of the axial flow blades 22 and the number of the axial flow blades 22 may be alternatively or simultaneously arranged, in this embodiment, the two features of the arrangement positions of the axial flow blades 22 and the number of the axial flow blades 22 are simultaneously arranged, which not only improves the air outlet efficiency of the axial flow wind wheel 2, but also enables an air flow to be formed in the axial flow channel C1 and blown out from the air outlet end 12 of the fan housing.
In order to realize the superposition of the axial flow channel C1 and the annular mixed flow channel C2, the inner cavity 111 of the annular mixed flow wheel hub 31 forms part of the axial flow channel C1, so that the annular mixed flow channel C2 is positioned outside the axial flow channel C1, and the air volume is effectively increased while the air is widely covered and supplied.
In this embodiment, referring to fig. 5, the annular mixed-flow wind wheel 3 is rotatably installed outside the axial-flow wind wheel 2, and an axial-flow gap δ is formed between the outer end of the axial-flow wind blade 22 and the inner end of the annular mixed-flow hub 312,The annular mixed flow wind wheel 3 and the axial flow wind wheel 2 are mutually independent, the rotating speeds of the annular mixed flow wind wheel 3 and the axial flow wind wheel 2 are independently adjustable, and the wind adjusting range of the fan 100 is improved.
In order to realize that the rotating speeds of the annular mixed-flow wind wheel 3 and the axial-flow wind wheel 2 are individually adjustable, the fan 100 is further provided with a mixed-flow driving motor 5 and a gear transmission structure 6 (please refer to fig. 8), a motor base of the mixed-flow driving motor 5 is arranged on the annular air inlet casing 11, and the mixed-flow driving motor 5 is provided with a mixed-flow motor output shaft 51 extending along the axial direction F of the fan 100; the gear transmission structure 6 comprises a gear ring 61 and a driving gear 62 externally meshed with the gear ring 61, the gear ring 61 is sleeved on the mixed flow wind wheel 3, the outer edge of the mixed flow fan blades 32 is connected with the inner side wall of the gear ring 61, and the driving gear 62 is sleeved on the mixed flow motor output shaft 51, so that the mixed flow driving motor 5 can independently drive the annular mixed flow wind wheel 3.
Further referring to fig. 8, specifically, the mixed flow driving motor 5 and the driving gear 62 form a driving set, the mixed flow driving motor 5 and the driving gear 62 are disposed in a one-to-one correspondence manner, the driving set is disposed in a plurality and distributed on the periphery of the gear ring 61, the driving gear 62 in each driving set is externally engaged with the gear ring 61, the driving force of the mixed flow driving motor 5 is increased, and the rotation speed of the annular mixed flow wind wheel 3 is increased.
In order to avoid interference between the gear transmission structure 66 and the annular sealing cover plate 4, the annular sealing cover plate 4 is outwardly expanded on one side corresponding to the air outlet end of the fan casing 1, the mixed flow fan blade 32 is axially provided with a covering area and an uncovering area covered by the annular sealing cover plate 4, and the gear ring 61 is arranged on the uncovered area of the mixed flow fan blade 32, so that when the driving gear 62 is meshed with the gear ring 61 to drive the mixed flow fan blade 32 to rotate, interference with the annular sealing cover plate 4 is avoided.
Referring to fig. 9, the end surface of the driving gear 62 is provided with a flange 621 that is turned over outward, and the flange 621 abuts against the end surface of the ring gear 61, which faces the mixed flow fan, so as to axially limit the ring gear 61 and prevent the driving gear 62 from displacing in the process of rotationally meshing with the ring gear 61.
In another embodiment, the outer end of the axial flow fan blade 22 is connected to the inner side of the annular mixed flow wheel hub 31 (see fig. 10 to 11), the annular mixed flow wind wheel 3 and the axial flow wind wheel 2 rotate synchronously, and the annular mixed flow wind wheel 3 and the axial flow wind wheel 2 can be driven simultaneously only by arranging a driving member, so that the cost is saved.
The present invention further provides a ventilation device, including the fan 100, wherein the ventilation device includes all technical features of the fan 100, and therefore, the ventilation device also has technical effects brought by all the technical features, and details are not repeated herein.
Referring to fig. 12 to 14, the ventilation device is an indoor unit of an air conditioner; the air-conditioning indoor unit further comprises a shell 200 and an air outlet grid 300, wherein the shell 200 forms an annular cavity which penetrates through the shell in the vertical direction, the side end of the annular cavity is provided with an air inlet 310, and the lower end of the annular cavity is provided with an air outlet 320; the air outlet grid 300 is arranged at the air outlet 320; wherein, fan 100 is located in the annular cavity, fan casing air-out end 12 corresponds air outlet 320 sets up, and the air current certainly fan casing air-out end 12 is located air outlet 320 air-out grid 300 is certain diffusion angle and blows off, enlarges fan 100's air supply scope realizes covering the air supply in the region on a large scale.
Referring to fig. 14, the indoor unit of the air conditioner further includes an annular heat exchanger 400 disposed in the annular cavity, an air inlet end 410 of the annular heat exchanger 400 is disposed corresponding to the air inlet 310, and an air outlet end 420 of the annular heat exchanger 400 is disposed on a sidewall of an inner cavity thereof; the fan 100 is disposed in the inner cavity of the annular heat sink 400, the air flow enters the annular heat exchanger 400 from the air inlet end 410, and after heat exchange, the air flow is guided out from the air outlet end 420 and enters the fan 100, so as to adjust the outlet air temperature of the air conditioner.
Specifically, the annular heat exchanger 400 is provided with an opening along the circumferential direction thereof, and the circuit board assembly 600 (see fig. 15) is hermetically mounted in the opening, so that the mounting space is saved.
In order to ensure the structural integrity of the indoor unit of the air conditioner, referring to fig. 15, the indoor unit of the air conditioner further includes a sealing structure 500, where the sealing structure 500 includes an annular sealing plate 510 disposed at the lower end of the annular heat exchanger 400, and a sealing baffle 520 disposed at the upper end of the annular sealing plate 510, the sealing baffle 520 is disposed corresponding to the opening, and an installation space is defined among the sealing baffle 520, the annular sealing plate 510, and the outer shell 200; the circuit board assembly 600 is correspondingly arranged in the installation space, and the sealing structure 500 not only ensures that the circuit board assembly 600 cannot be damaged due to the installation environment, but also ensures that the airflow entering the annular heat exchanger 400 from the air inlet 310 cannot be leaked.
Referring to fig. 16, the air outlet grid 300 includes a first air guiding rib 310 and a second air guiding rib group 320, wherein the first air guiding rib 310 extends spirally around the rotation axis of the fan 100; second air guide rib group 320 includes follows a plurality of second air guide ribs 321, each that shell 200 circumference interval set up second air guide rib 321 follows fan 100's radial extension, and connect first air guide rib 310, the air current certainly air-out grid 300 is certain diffusion angle and blows out, enlarges fan 100's air supply scope realizes covering the air supply in the region on a large scale.
Referring to fig. 17, the air outlet grid 300 is cut along the direction D-D, an included angle β is formed between the first air guiding rib 310 and the rotation axis of the fan 100, and it should be noted that when the first air guiding rib 310 extends towards the side away from the rotation axis of the fan 100, the included angle β takes a positive value, and the air flow is diffused and sent out; when the first air guiding rib 310 extends toward one side close to the rotation axis of the fan 100, the included angle β takes a negative value, the airflow is collected and sent out, the included angle β is set to be-85 degrees and less than or equal to 85 degrees, specifically, to expand the air supply range, the included angle β is set to be 10 degrees and less than or equal to 70 degrees, in this embodiment, the included angle β is set to be 20 degrees, and the air supply range of the air outlet grid 300 is the largest.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents made by the contents of the present specification and drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (18)
1. A fan, comprising:
the fan comprises a fan shell, wherein an axial flow channel and an annular mixed flow channel which circumferentially surrounds the outer side of the axial flow channel are formed in the fan shell;
the axial flow wind wheel is rotatably arranged in the axial flow channel; and the number of the first and second groups,
and the annular mixed flow wind wheel is arranged on the outer side of the axial flow wind wheel in a circumferential rotating manner.
2. The fan according to claim 1, wherein the annular mixed-flow wind wheel comprises an annular mixed-flow hub and a plurality of mixed-flow wind blades arranged on one side of the annular mixed-flow hub, which faces away from the axial-flow wind wheel, and the mixed-flow wind blades are arranged at intervals along the circumferential direction of the annular mixed-flow hub; and/or the presence of a gas in the gas,
the annular mixed-flow wind wheel comprises an annular mixed-flow wheel hub and a plurality of mixed-flow wind blades arranged on one side, back to the axial-flow wind wheel, of the annular mixed-flow wheel hub, wherein the number of the mixed-flow wind blades is N2, and is more than or equal to 3 and less than or equal to N2 and less than or equal to 100.
3. The fan as claimed in claim 2, wherein a side of the plurality of mixed flow blades facing away from the annular mixed flow hub is provided with an annular cover plate, and a space defined between the annular cover plate and the annular mixed flow hub forms part of the annular mixed flow channel.
4. The fan as claimed in claim 3, wherein the fan housing includes an annular air inlet housing disposed on a side of the annular cover plate opposite to the air outlet end of the fan housing, the inner cavity of the annular air inlet housing forms part of the axial-flow channel, an annular channel is disposed through a side end surface of the annular air inlet housing, an annular cavity is formed between the annular cover plate and the annular mixed-flow hub, and the annular channel and the annular cavity together form the annular mixed-flow channel.
5. The fan as claimed in claim 4, wherein a plurality of guide vanes are provided in the annular passage, the plurality of guide vanes being arranged at intervals in a circumferential direction of the annular passage; and/or the presence of a gas in the gas,
the annular channel is internally provided with a plurality of guide vanes, the number of the guide vanes is N1, and 2 is less than or equal to N1 is less than or equal to 100.
6. The fan as claimed in claim 4, wherein the annular cover plate is integrally connected to the annular intake housing.
7. The fan as claimed in claim 3, wherein the annular shroud plate is integrally connected to the plurality of mixed flow blades.
8. The fan as claimed in claim 3, wherein the fan housing includes an annular air inlet housing disposed on a side of the annular cover plate opposite to the air outlet end of the fan housing;
the fan further includes:
the motor base of the mixed flow driving motor is arranged on the annular air inlet shell, and the mixed flow driving motor is provided with a mixed flow motor output shaft extending along the axial direction of the fan; and the number of the first and second groups,
the gear transmission structure comprises a gear ring and a driving gear meshed with the gear ring, wherein the gear ring is sleeved on the outer side of the mixed flow wind wheel, the outer edges of the mixed flow fan blades are connected with the inner side wall of the gear ring, and the driving gear is sleeved on the output shaft of the mixed flow motor.
9. The fan as claimed in claim 8, wherein the mixed flow driving motor and the driving gear form a driving group, the mixed flow driving motor and the driving gear are disposed in a one-to-one correspondence, the driving group is disposed in a plurality and distributed on the peripheral side of the ring gear, and the driving gear in each driving group is externally engaged with the ring gear.
10. The fan of claim 2 wherein the inner cavity of the annular mixed flow hub forms part of the axial flow path.
11. The fan of claim 10 wherein the axial flow wind wheel includes axial flow blades, the outer ends of the axial flow blades being connected to the sides of the annular mixed flow hub.
12. The fan according to claim 1, wherein the axial flow wind wheel comprises an axial flow hub and a plurality of axial flow blades arranged on one side of the axial flow hub facing the annular mixed flow wind wheel, and the plurality of axial flow blades are arranged at intervals along the circumferential direction of the axial flow hub; and/or the presence of a gas in the gas,
the axial flow wind wheel comprises an axial flow hub and a plurality of axial flow fan blades arranged on one side, facing the annular mixed flow wind wheel, of the axial flow hub, the number of the axial flow fan blades is N3, and is more than or equal to 2 and less than or equal to N3 and less than or equal to 100.
13. A ventilating device comprising a fan according to any of claims 1 to 12.
14. The ventilation device according to claim 13, wherein the ventilation device is an air conditioning indoor unit;
the air-conditioning indoor unit further comprises:
the shell forms an annular cavity which penetrates along the vertical direction, the side end of the annular cavity is provided with an air inlet, and the lower end of the annular cavity is provided with an air outlet; and the number of the first and second groups,
the air outlet grid is arranged at the air outlet;
the fan is arranged in the annular cavity, and the air outlet end of the fan shell corresponds to the air outlet.
15. The ventilation device of claim 14, wherein the outlet grille comprises:
the first air guiding rib is spirally extended along the rotation axis of the fan as a center; and the number of the first and second groups,
the second air guiding rib group comprises a plurality of second air guiding ribs arranged at intervals along the circumferential direction of the shell, and each second air guiding rib is arranged along the radial extension of the fan and connected with the first air guiding rib.
16. The ventilation device according to claim 14, wherein the indoor unit of the air conditioner further comprises an annular heat exchanger disposed in the annular cavity, an air inlet end of the annular heat exchanger is disposed corresponding to the air inlet, and an air outlet end of the annular heat exchanger is disposed on a side wall of the inner cavity;
wherein, the fan is arranged in the inner cavity of the annular radiator.
17. A ventilating device according to claim 16, wherein the annular heat exchanger is provided with an opening along its circumference, and the circuit board assembly is sealingly mounted in the opening.
18. The ventilation apparatus according to claim 17, wherein the indoor unit of an air conditioner further comprises a sealing structure, the sealing structure comprises an annular sealing plate disposed at a lower end of the annular heat exchanger, and a sealing baffle plate disposed at an upper end of the annular sealing plate, the sealing baffle plate is disposed corresponding to the opening, and an installation space is defined by the sealing baffle plate, the annular sealing plate and the outer casing;
the circuit board assembly is correspondingly arranged in the mounting space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110329763.0A CN113028502A (en) | 2021-03-26 | 2021-03-26 | Fan and ventilation equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110329763.0A CN113028502A (en) | 2021-03-26 | 2021-03-26 | Fan and ventilation equipment |
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| Publication Number | Publication Date |
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| CN113028502A true CN113028502A (en) | 2021-06-25 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110329763.0A Pending CN113028502A (en) | 2021-03-26 | 2021-03-26 | Fan and ventilation equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114194403A (en) * | 2022-01-25 | 2022-03-18 | 广东汇天航空航天科技有限公司 | Heat radiation structure of driving device and aircraft |
Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1871480A (en) * | 2003-10-20 | 2006-11-29 | 开利公司 | Fresh air vent position monitoring system |
| CN201786764U (en) * | 2010-07-05 | 2011-04-06 | 浙江志江风机有限公司 | Noise-damping ventilating machine of mixed flow type chassis |
| CN102083292A (en) * | 2009-11-30 | 2011-06-01 | 建准电机工业股份有限公司 | Heat radiating module |
| CN203867966U (en) * | 2014-06-11 | 2014-10-08 | 珠海格力电器股份有限公司 | Backward type centrifugal fan blade, centrifugal fan and skylight type air conditioning unit |
| CN204513599U (en) * | 2015-02-11 | 2015-07-29 | 浙江欧伦电气有限公司 | The two fans dehumidifier of a kind of top air-out |
| CN105275875A (en) * | 2015-10-15 | 2016-01-27 | 珠海格力电器股份有限公司 | Centrifugal fan blade and centrifugal fan |
| CN205273116U (en) * | 2016-01-07 | 2016-06-01 | 宁波宏都电器有限公司 | Use mixed -flow axial fan's car as a house air conditioner |
| CN205316624U (en) * | 2016-01-08 | 2016-06-15 | 广东美的制冷设备有限公司 | Axial compressor cabinet -type air conditioner |
| CN205425225U (en) * | 2015-12-16 | 2016-08-03 | 青岛海信电子设备股份有限公司 | Axial fan structure of supplying air |
| CN106091125A (en) * | 2016-07-26 | 2016-11-09 | 珠海格力电器股份有限公司 | A kind of ceiling type air conditioner indoor set |
| CN106287993A (en) * | 2016-10-24 | 2017-01-04 | 北京小米移动软件有限公司 | Air purifier and air channel structure thereof |
| CN106762823A (en) * | 2016-12-28 | 2017-05-31 | 东莞市卓奇电子科技有限公司 | Multiple flow passages axle stream wind focuses on impeller |
| CN106871235A (en) * | 2017-01-10 | 2017-06-20 | 青岛海尔空调电子有限公司 | Ceiling air conditioner |
| CN107345521A (en) * | 2016-05-05 | 2017-11-14 | 创科（澳门离岸商业服务）有限公司 | Flow-mixing blower fan |
| CN107421032A (en) * | 2017-07-28 | 2017-12-01 | 山东蓝想环境科技股份有限公司 | Dual channel multi-stage, efficient dry air energy handpiece Water Chilling Units |
| CN108019822A (en) * | 2016-11-01 | 2018-05-11 | 青岛海尔空调器有限总公司 | Indoor apparatus of air conditioner |
| CN208186527U (en) * | 2018-02-14 | 2018-12-04 | 青岛海尔空调器有限总公司 | A kind of wall-hung indoor unit of air conditioner |
| CN208658739U (en) * | 2018-04-18 | 2019-03-29 | 佛山市顺德区美的电热电器制造有限公司 | Cooking apparatus |
| CN209763295U (en) * | 2019-03-29 | 2019-12-10 | 广东美的制冷设备有限公司 | air conditioner indoor unit and air conditioner with same |
| CN112539468A (en) * | 2020-09-29 | 2021-03-23 | Tcl空调器(中山)有限公司 | Indoor unit and air conditioner |
-
2021
- 2021-03-26 CN CN202110329763.0A patent/CN113028502A/en active Pending
Patent Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1871480A (en) * | 2003-10-20 | 2006-11-29 | 开利公司 | Fresh air vent position monitoring system |
| CN102083292A (en) * | 2009-11-30 | 2011-06-01 | 建准电机工业股份有限公司 | Heat radiating module |
| CN201786764U (en) * | 2010-07-05 | 2011-04-06 | 浙江志江风机有限公司 | Noise-damping ventilating machine of mixed flow type chassis |
| CN203867966U (en) * | 2014-06-11 | 2014-10-08 | 珠海格力电器股份有限公司 | Backward type centrifugal fan blade, centrifugal fan and skylight type air conditioning unit |
| CN204513599U (en) * | 2015-02-11 | 2015-07-29 | 浙江欧伦电气有限公司 | The two fans dehumidifier of a kind of top air-out |
| CN105275875A (en) * | 2015-10-15 | 2016-01-27 | 珠海格力电器股份有限公司 | Centrifugal fan blade and centrifugal fan |
| CN205425225U (en) * | 2015-12-16 | 2016-08-03 | 青岛海信电子设备股份有限公司 | Axial fan structure of supplying air |
| CN205273116U (en) * | 2016-01-07 | 2016-06-01 | 宁波宏都电器有限公司 | Use mixed -flow axial fan's car as a house air conditioner |
| CN205316624U (en) * | 2016-01-08 | 2016-06-15 | 广东美的制冷设备有限公司 | Axial compressor cabinet -type air conditioner |
| CN107345521A (en) * | 2016-05-05 | 2017-11-14 | 创科（澳门离岸商业服务）有限公司 | Flow-mixing blower fan |
| CN106091125A (en) * | 2016-07-26 | 2016-11-09 | 珠海格力电器股份有限公司 | A kind of ceiling type air conditioner indoor set |
| CN106287993A (en) * | 2016-10-24 | 2017-01-04 | 北京小米移动软件有限公司 | Air purifier and air channel structure thereof |
| CN108019822A (en) * | 2016-11-01 | 2018-05-11 | 青岛海尔空调器有限总公司 | Indoor apparatus of air conditioner |
| CN106762823A (en) * | 2016-12-28 | 2017-05-31 | 东莞市卓奇电子科技有限公司 | Multiple flow passages axle stream wind focuses on impeller |
| CN106871235A (en) * | 2017-01-10 | 2017-06-20 | 青岛海尔空调电子有限公司 | Ceiling air conditioner |
| CN107421032A (en) * | 2017-07-28 | 2017-12-01 | 山东蓝想环境科技股份有限公司 | Dual channel multi-stage, efficient dry air energy handpiece Water Chilling Units |
| CN208186527U (en) * | 2018-02-14 | 2018-12-04 | 青岛海尔空调器有限总公司 | A kind of wall-hung indoor unit of air conditioner |
| CN208658739U (en) * | 2018-04-18 | 2019-03-29 | 佛山市顺德区美的电热电器制造有限公司 | Cooking apparatus |
| CN209763295U (en) * | 2019-03-29 | 2019-12-10 | 广东美的制冷设备有限公司 | air conditioner indoor unit and air conditioner with same |
| CN112539468A (en) * | 2020-09-29 | 2021-03-23 | Tcl空调器(中山)有限公司 | Indoor unit and air conditioner |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114194403A (en) * | 2022-01-25 | 2022-03-18 | 广东汇天航空航天科技有限公司 | Heat radiation structure of driving device and aircraft |
| CN114194403B (en) * | 2022-01-25 | 2023-06-02 | 广东汇天航空航天科技有限公司 | Heat radiation structure of driving device and aircraft |
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Application publication date: 20210625 |