Air outlet device

Abstract

The utility model discloses an air outlet device and relates to the technical field of air blowing equipment, the air outlet device comprises an air outlet main body, a mounting column and two fan assemblies, an air outlet channel is formed in the air outlet main body, and an air inlet and an air outlet which are communicated with the air outlet channel are respectively formed in two ends of the air outlet main body; the mounting column is arranged in the air outlet channel, a center hole is formed in the mounting column, a supporting piece is arranged on the periphery of the mounting column, and the supporting piece is connected with the channel inner wall of the air outlet channel and divides the mounting column into a first mounting section and a second mounting section; the draught fan assembly comprises draught fans and fan blades, each draught fan comprises a stator and an outer rotor, the outer rotor is rotatably arranged on the periphery of the stator in a sleeving mode, the fan blades are connected to the outer rotor, the stator of one draught fan is connected to the periphery of the first installation section in a sleeving mode, and the stator of the other draught fan is connected to the periphery of the second installation section in a sleeving mode. According to the technical scheme provided by the utility model, the air outlet device can keep large air volume for air outlet, and the practicability and the reliability of the air outlet device are further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of blowing equipment, in particular to an air outlet device. Background Art

[0002] Existing electric fans, hair dryers and other equipment can usually set two fans side by side in the air outlet direction in the air outlet device. By regulating the two fans to drive the fan blades separately, the air outlet speed or air pressure and other characteristics of the air outlet device can be better improved under the action of the two fans, thereby achieving a better blowing effect of the air outlet device.

[0003] However, most of the existing air outlet devices use a mounting plate in the middle of the inner cavity of the air outlet tube, and fixed fans are installed on opposite sides of the mounting plate to ensure the stable operation of the air outlet device. However, such a setting will make the area on the central axis of the air outlet device closed, and when the air flow flows out of the air outlet tube, it is easy to form a negative pressure environment in the central area of ​​the air outlet device, causing part of the air flow to be easily attracted by the negative pressure, affecting the air volume of the air outlet device. Utility Model Content

[0004] The main purpose of the utility model is to propose an air outlet device, aiming to realize the hollow shaft design of the air outlet device, effectively reduce the negative pressure effect formed when the air outlet device is in operation, so that the air outlet device can maintain a larger air volume, and further improve the practicality and reliability of the air outlet device.

[0005] To achieve the above-mentioned purpose, the air outlet device proposed by the utility model includes an air outlet body, a mounting column and two fan assemblies, wherein an air outlet channel is formed in the air outlet body, and two ends of the air outlet body are respectively provided with an air inlet and an air outlet connected to the air outlet channel; the mounting column is arranged in the air outlet channel, and a central hole is provided in the mounting column, and the central hole penetrates the mounting column along the air outlet direction, and a support is provided on the outer periphery of the mounting column, and the support is connected to the inner wall of the air outlet channel and divides the mounting column into a first mounting section close to the air inlet and a second mounting section close to the air outlet; the fan assembly includes a fan and a fan blade, and the fan includes a stator and an outer rotor, and the outer rotor is rotatably sleeved on the outer periphery of the stator, and the fan blade is connected to the outer rotor, and the stator is provided with a fixing through hole, and a stator of one fan is sleeved on the outer periphery of the first mounting section, and a stator of the other fan is sleeved on the outer periphery of the second mounting section, and the fixing through holes of the two stators are respectively connected to the two ends of the central hole.

[0006] In one embodiment, the support member includes a support enclosure and at least two support guide vanes, wherein the support enclosure is arranged around the mounting column and separates the mounting column into the first mounting section and the second mounting section, and the stators of the two fan assemblies are respectively connected to the opposite sides of the support enclosure; at least two of the support guide vanes are spaced apart and connected to the outer periphery of the support enclosure and connected to the inner wall of the air outlet channel.

[0007] In one embodiment, a guide slope is formed on a side of the support guide vane facing the air inlet.

[0008] In one embodiment, the support guide vane includes a first support plate and a second support plate, the projection of the first support plate on the support enclosure is arranged at an angle with the rotation center axis of the fan, and the side of the first support plate facing the air inlet is formed as the guide slope; the second support plate is connected to one side of the first support plate and is arranged at an angle with the first support plate, and the first support plate and the second support plate are enclosed to form a weight reduction groove. And / or, a guide arc surface is formed on the side of the support enclosure facing the air inlet.

[0009] In one embodiment, the two blades of the fan assembly are defined as a first blade and a second blade, respectively, the first blade is arranged between the support member and the air inlet, and the second blade is arranged between the support member and the air outlet; the first blade includes an inner hub, an outer hub, a first blade and a second blade, and the inner hub is sleeved on the outer rotor; the outer hub is coaxially arranged with the inner hub and sleeved on the outer periphery of the inner hub, and an air inlet channel is formed between the outer hub and the inner hub; the first blade is connected to the outer periphery of the outer hub; the second blade is arranged in the air inlet channel and connects the outer hub and the inner hub.

[0010] In one embodiment, the outer hub includes a first air gathering ring and a second air gathering ring, the first blade is connected to the outer periphery of the first air gathering ring; the second air gathering ring is arranged inside the first air gathering ring, one end of the second air gathering ring is connected to the inner wall of the first air gathering ring, and the second blade connects the inner hub and the second air gathering ring. The outer periphery of the second air gathering ring is arranged at an angle to the inner wall of the first air gathering ring, and the width of the second air gathering ring is configured to gradually increase along the direction from the air inlet to the air outlet.

[0011] In one embodiment, the air outlet body is further provided with an air inlet grille and an air outlet grille, the air inlet grille is connected to one end of the air outlet body and covers the air inlet setting, and the air inlet grille is provided with an air inlet avoidance opening connected to the fixed through hole. The air outlet grille is connected to the other end of the air outlet body and covers the air outlet setting, and the air outlet grille is provided with an air outlet avoidance opening connected to the fixed through hole.

[0012] In one embodiment, the stator includes a fixed sleeve shaft and a stator core, the fixed sleeve shaft is provided with the fixed through hole, the fixed sleeve shaft is sleeved on the mounting column, the fixed sleeve shaft includes a connecting section and a fixing section, and the stator core is connected to the outer periphery of the fixing section. The outer rotor is sleeved on the outer periphery of the fixed sleeve shaft and arranged around the stator core, and the fan further includes a bearing, the bearing is arranged between the connecting section and the outer rotor, and connects the outer periphery of the connecting section and the inner wall of the outer rotor, so that the outer rotor rotates relative to the fixed sleeve shaft.

[0013] In one embodiment, the number of the bearing is one, and the bearing is arranged close to the stator core. Alternatively, the bearing includes at least two bearing units, and the at least two bearing units are arranged in sequence and spaced apart along the extension direction of the fixed sleeve shaft, and are respectively connected to the outer wall of the connecting section and the inner wall of the outer rotor.

[0014] In one embodiment, the outer rotor is provided with a magnetic ring, which is fixedly mounted on the inner wall of the outer rotor and arranged around the stator core. The stator core and the magnetic ring are arranged alternately, and the partial structure of the stator core close to the connecting section does not overlap with the projection of the magnetic ring on the fixed sleeve shaft, and the partial structure of the magnetic ring away from the connecting section does not overlap with the projection of the stator core on the fixed sleeve shaft.

[0015] The technical solution of the utility model is to set a center hole that passes through the air outlet direction on the mounting column, and make two fan assemblies both adopt the fan sleeve of outer rotor form to be installed on the first mounting section and the second mounting section of the mounting column to drive the fan blades to rotate. Under the action of the connection between the fixed through hole and the center hole, the center of the air outlet device can maintain air circulation along the air outlet direction. Furthermore, when the air outlet device is operating, the formation of a negative pressure environment in the central area of ​​the air outlet can be effectively avoided, the attraction of the negative pressure environment to part of the air outlet airflow can be reduced, and the air volume loss of the air outlet airflow can be effectively reduced, which is conducive to better realizing the large air volume outlet effect of the air outlet device and further improving the practicality and reliability of the air outlet device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0017] Figure 1 A schematic structural diagram of an embodiment of an air outlet device provided by the utility model;

[0018] Figure 2 for Figure 1 A structural exploded view of an embodiment of an air outlet device;

[0019] Figure 3 for Figure 1 A schematic diagram of the internal structure of an embodiment of an air outlet device;

[0020] Figure 4 for Figure 1 A cross-sectional view of an embodiment of an air outlet structure;

[0021] Figure 5 for Figure 1 A flow direction diagram of an outlet airflow in an outlet structure;

[0022] Figure 6 for Figure 1 A cross-sectional view of an embodiment of an air outlet structure at a support member;

[0023] Figure 7 for Figure 1 A schematic cross-sectional structure diagram of a fan and a first fan blade of an embodiment of an air outlet structure.

[0024] Description of Figure Numbers:

[0025] 100, air outlet device; 10, air outlet body; 11, air outlet channel; 13, air inlet grille; 131, air inlet avoidance port; 15, air outlet grille; 151, air outlet avoidance port; 30, mounting column; 31, center hole; 33, support member; 331, support enclosure; 333, support guide vane; 3331, first support plate; 3333, second support plate; 3335, weight reduction groove; 50, fan assembly; 51, fan; 511, stator; 5111, fixed sleeve shaft; 5113, stator core; 513, outer rotor; 515, bearing; 53a, first blade; 531, inner hub; 5311, air inlet channel; 533, outer hub; 5331, first air focusing ring; 5333, second air focusing ring; 535, first blade; 537, second blade; 53b, second blade.

[0026] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0029] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0030] Most of the existing air outlet devices use a mounting plate in the middle of the inner cavity of the air outlet tube, and fixed fans are installed on opposite sides of the mounting plate to ensure the stable operation of the air outlet device. However, such a setting will make the area on the central axis of the air outlet device closed. When the air flow flows out of the air outlet tube, it is easy to form a negative pressure environment in the central area of ​​the air outlet device, causing part of the air flow to be easily attracted by the negative pressure, affecting the air volume of the air outlet device. In view of the above problems, the utility model proposes an air outlet device 100.

[0031] See also Figures 1 to 7In one embodiment of the utility model, the air outlet device 100 includes an air outlet body 10, a mounting column 30 and two fan assemblies 50. The air outlet body 10 is formed with an air outlet channel 11. The two ends of the air outlet body 10 are respectively provided with an air inlet and an air outlet connected to the air outlet channel 11; the mounting column 30 is arranged in the air outlet channel 11, and a center hole 31 is arranged in the mounting column 30. The center hole 31 passes through the mounting column 30 along the air outlet direction. The outer periphery of the mounting column 30 is provided with a support member 33, and the support member 33 is connected to the inner wall of the air outlet channel 11 and separates the mounting column 30. The fan assembly 50 comprises a fan 51 and fan blades, the fan 51 comprises a stator 511 and an outer rotor 513, the outer rotor 513 is rotatably sleeved on the outer periphery of the stator 511, the fan blades are connected to the outer rotor 513, the stator 511 is provided with a fixing through hole, the stator 511 of one fan 51 is sleeved on the outer periphery of the first mounting section, the stator 511 of the other fan 51 is sleeved on the outer periphery of the second mounting section, and the fixing through holes of the two stators 511 are respectively connected to the two ends of the center hole 31.

[0032] It can be understood that the air outlet device 100 can be applied to equipment such as fans and hair dryers. By utilizing the turbulence effect of the fan assembly 50 in the air outlet channel 11, the air outlet device 100 can gather air in the environment to form an airflow with a certain flow rate and air volume to meet the user's usage requirements.

[0033] In the present application, the air outlet channel 11 in the air outlet device 100 can be arranged in a cylindrical structure, so that the air outlet channel 11 can have a certain volume to accommodate the operation of the fan assembly 50 and play a certain protective role for the fan assembly 50. By arranging a mounting column 30 in the air outlet channel 11, the mounting column 30 can be a hollow cylindrical structure arranged coaxially with the air outlet channel 11, and using a support member 33 such as a rib, a guide vane or a support rod to surround and connect the outer periphery of the mounting column 30 and the inner wall of the air outlet channel 11, the mounting column 30 can be stably arranged in the air outlet channel 11. At this time, the support member 33 can be connected to the center position of the mounting column 30 and the air outlet channel 11, so that the support column can separate the mounting column 30 into a first mounting section and a second mounting section, and the first mounting section is arranged close to the air inlet, and the second mounting section is arranged close to the air outlet. In this way, a fan assembly 50 can be installed respectively on the first mounting section and the second mounting section, so that the airflow generated by the air disturbance caused by the fan assembly 50 on the first mounting section can further increase the airflow properties such as the flow rate, air volume or air pressure of the airflow under the action of the fan assembly 50 on the second mounting section, thereby realizing the dual fan 51 driving action of the air outlet device 100, so that the air outlet device 100 can achieve a better air outlet effect. Among them, the air outlet device 100 can regulate the two fan assemblies 50 to operate in a manner of rotating in the same direction. At this time, due to the synchronous disturbance of the two fan assemblies 50, the air outlet channel 11 can have a greater suction force on the external air, which is beneficial to better increase the air intake of the air outlet device 100 and achieve a large air volume air outlet effect of the air outlet device 100; or, the air outlet device 100 can regulate the two fan assemblies 50 to operate in a manner of rotating in opposite directions. At this time, when the airflow disturbed by the fan assembly 50 on the first installation section flows toward the air outlet, the fan assembly 50 on the second installation section can be used to reversely pressurize the airflow, so that the airflow blown out by the air outlet device 100 can have a larger air pressure, so that the air outlet effect of the air outlet device 100 can better meet user needs, thereby improving the practicality and reliability of the air outlet device 100.

[0034] In addition, the fan assembly 50 can be arranged in the form of an outer rotor 513 fan 51, and the stator 511 of the fan 51 is provided with a fixed through hole with an axis passing through it. The size of the fixed through hole can be set corresponding to the size of the mounting column 30, so that the two fans 51 can respectively sleeve the stator 511 on the outer periphery of the first mounting segment and the outer periphery of the second mounting segment, and use the fixed through hole to communicate with the center hole 31 of the mounting column 30, so as to keep the air outlet device 100 on the center axis. The structural setting of the through hole is maintained, and the outer rotor 513 sleeved on the outer periphery of the stator 511 is used to connect and support the fan blades. The electromagnetic effect of the stator 511 and the outer rotor 513 can be used to drive the outer rotor 513 to drive the fan blades to rotate, thereby ensuring the stable air outlet effect of the air outlet device 100. By adopting an outer rotor 513 with a hollow stator 511 and installing the fan 51 on the mounting column 30 to drive the fan blades, the fan assembly 50 can better avoid the center hole 31 when being installed on the mounting column 30, and maintain the flow of air at both ends of the air outlet body 10 through the center hole 31. In this way, when the air outlet device 100 is in operation, the fixed through hole and the center hole 31 are used to maintain the air circulation between the air inlet and the air outlet of the air outlet body 10, which can avoid the formation of a closed space in the central area of ​​the air outlet, reduce the negative pressure effect in the central area of ​​the air outlet, prevent part of the outlet air flow from being attracted and circling in the central area of ​​the air outlet under the action of negative pressure, reduce the outlet air flow loss of the air outlet device 100, and enable the air outlet device 100 to better achieve a larger air volume outlet effect, effectively improving the practicality and reliability of the air outlet device 100.

[0035] The technical solution of the utility model is to set a central hole 31 that passes through the installation column 30 along the air outlet direction, and make the two fan assemblies 50 both adopt the fan 51 in the form of an outer rotor 513 to be sleeved and installed on the first installation section and the second installation section of the installation column 30 to drive the fan blades to rotate. Under the connection between the fixed through hole and the central hole 31, the center of the air outlet device 100 can maintain air circulation along the air outlet direction. Furthermore, when the air outlet device 100 is in operation, it can effectively avoid the formation of a negative pressure environment in the central area of ​​the air outlet, reduce the attraction of the negative pressure environment to part of the air outlet airflow, effectively reduce the air volume loss of the air outlet airflow, and help to better achieve the large air volume outlet effect of the air outlet device 100, and further improve the practicality and reliability of the air outlet device 100.

[0036] See also Figures 2 to 4In an embodiment of the utility model, the support member 33 includes a support panel 331 and at least two support guide vanes 333. The support panel 331 is arranged around the mounting column 30 and divides the mounting column 30 into the first mounting section and the second mounting section. The stators 511 of the two fan assemblies 50 are respectively connected to the opposite sides of the support panel 331; at least two support guide vanes 333 are spaced apart and connected to the outer periphery of the support panel 331, and connected to the inner wall of the air outlet channel 11.

[0037] In this embodiment, by arranging the support panel 331 around the outer periphery of the mounting column 30, the stator 511 of the fan 51 can be fixed to the support panel 331 by bolts or snap connections, which is conducive to better increasing the connection area between the mounting column 30 and the fan 51, and realizing the stable support and fixation of the fan assembly 50 by the mounting column 30; and the support panel 331 is used to separate the two fan assemblies 50, so as to ensure the independent and stable operation of the two fan assemblies 50 on the air outlet device 100. At this time, by using at least two support guide vanes 333 arranged at intervals on the outer periphery of the support panel 331, the support guide vanes 333 can be used to connect the inner wall of the air outlet channel 11, so as to realize the support and fixation of the mounting column 30 by the support member 33, and at the same time, by using multiple support guide vanes 333 of smaller size to be arranged at intervals, the gaps between the support guide vanes 333 can be used for airflow, so as to ensure the stable and reliable air outlet of the air outlet device 100, and further improve the structural stability and reliability of the air outlet device 100.

[0038] See also Figure 3 and Figure 4 In an embodiment of the present utility model, a guide slope is formed on a side of the support guide vane 333 facing the air inlet.

[0039] In this embodiment, the support guide vane 333 can be set in the form of a plate structure inclined to the rotation center axis of the fan 51, or the support guide vane 333 can be set in the form of a triangular block or trapezoidal block structure with an inclined surface on the side facing the air inlet, so that the support guide vane 333 can form an inclined guide slope on the side facing the air inlet. Under the action of the guide slope, the airflow passing through the fan blade disturbance on the first installation section can flow better toward the air outlet under the guiding action of the guide slope, so as to better avoid airflow turbulence or noise in the air outlet channel 11, thereby achieving a better blowing effect of the air outlet device 100 and further improving the practicality and reliability of the air outlet device 100.

[0040] See also Figure 3 and Figure 6In an embodiment of the utility model, the support guide vane 333 includes a first support plate 3331 and a second support plate 3333, the projection of the first support plate 3331 on the support enclosure 331 is arranged at an angle with the rotation center axis of the fan 51, and the side of the first support plate 3331 facing the air inlet is formed as the guide slope; the second support plate 3333 is connected to one side of the first support plate 3331 and is arranged at an angle with the first support plate 3331, and the first support plate 3331 and the second support plate 3333 are enclosed to form a weight reduction groove 3335. And / or, a guide arc surface is formed on the side of the support enclosure 331 facing the air inlet.

[0041] In this embodiment, the support guide vane 333 is formed by connecting the first support plate 3331 and the second support plate 3333, and the first support plate 3331 and the second support plate 3333 are set at an angle, so that the overall width of the support guide vane 333 can be better increased by connecting the first support plate 3331 and the second support plate 3333 that are set obliquely, so that the support guide vane 333 can use a certain structural thickness to better improve the supporting and connecting effect on the mounting column 30 and the air outlet body 10; at the same time, the first support plate 3331 and the second support plate 3333 are used to form a weight reduction groove 3335 on the side facing the air outlet, so that the overall structural strength of the support guide vane 333 can be better improved under the action of the second support plate 3333, and the support guide vane 333 can achieve a lighter and thinner structural design, which is conducive to better reducing the weight and material cost of the air outlet device 100, and further improving the structural stability and reliability of the air outlet device 100. Among them, one end of the first support plate 3331 and the second support plate 3333 can be connected to the outer periphery of the mounting column 30, and the other end of the first support plate 3331 and the second support plate 3333 can be connected to the inner wall of the air outlet channel 11. The mounting column 30 and the inner wall of the air outlet channel 11 can be used to form two relative inner walls of the weight reduction groove 3335, thereby ensuring the overall connection stability between the support guide vane 333 and the mounting column 30 and the air outlet body 10, and effectively avoiding the support guide vane 333 from being broken due to excessive wind force during the operation of the air outlet device 100, so that the air outlet device 100 can achieve better high-speed blowing effect, further improving the structural stability and reliability of the air outlet device 100. Secondly, the weight reducing groove 3335 is formed by using the first support plate 3331 and the second support plate 3333, and the control cables or power supply cables of the fan assembly 50 can be accommodated and passed through the weight reducing groove 3335 for routing. This is beneficial to prevent the cables of the fan assembly 50 from being exposed in the air outlet channel 11 and having a certain probability of being entangled in the fan blades, thereby realizing the routing and storage of the air outlet device 100, and better improving the aesthetics and structural reliability of the air outlet device 100.

[0042] In addition, the support panel 331 can be provided with a conical boss structure on the side facing the air inlet; or the support panel 331 can be provided with a conical ring structure that gradually expands in the direction from the air inlet to the air outlet, so that the side wall of the support panel 331 facing the air inlet can form a guide arc surface inclined to the outer periphery of the mounting column 30. Under the action of the guide arc surface, the airflow formed after the air is disturbed by the fan blades of the first mounting section can flow smoothly toward the air outlet along the guide arc surface, thereby achieving a guiding effect on the incoming airflow, which is conducive to better avoiding the support panel 331 from blocking the incoming airflow and reducing the attenuation of the airflow velocity. At the same time, it can well reduce the noise generated by the turbulence of the airflow between the two fan blades, further improving the practicality and reliability of the air outlet device 100.

[0043] See also Figure 3 , Figure 4 and Figure 7 In an embodiment of the utility model, the two blades of the fan assembly 50 are defined as a first blade 53a and a second blade 53b, respectively. The first blade 53a is arranged between the support member 33 and the air inlet, and the second blade 53b is arranged between the support member 33 and the air outlet; the first blade 53a includes an inner hub 531, an outer hub 533, a first blade 535 and a second blade 537, and the inner hub 531 is sleeved on the outer rotor 513; the outer hub 533 is coaxially arranged with the inner hub 531 and sleeved on the outer periphery of the inner hub 531, and an air inlet channel 5311 is formed between the outer hub 533 and the inner hub 531; the first blade 535 is connected to the outer periphery of the outer hub 533; the second blade 537 is arranged in the air inlet channel 5311 and connects the outer hub 533 and the inner hub 531.

[0044] In this embodiment, the air outlet device 100 can make the first fan blade 53a and the second fan blade 53b adopt the same fan blade structure setting; or, the first fan blade 53a and the second fan blade 53b can adopt different fan blade structures. In this case, the air flow velocity, air volume or wind pressure and other properties of the airflow can be adjusted by using a combination of fan blades with different structures, so that the air outlet device 100 can achieve a better blowing effect.

[0045] Among them, by making the first blade 53a form an air inlet channel 5311 between the coaxially arranged outer hub 533 and the inner hub 531, and arranging a plurality of first blades 535 around the outer circumference of the outer hub 533, and arranging a plurality of second blades 537 around the inner wall of the outer hub 533 and the outer wall of the inner hub 531 to connect the outer hub 533 and the inner hub 531, the first blade 53a can adopt a blade structure in the form of combined air outlet to better improve the air intake effect of the air outlet device 100. Among them, the first blade 535 can adopt an axial flow blade or an oblique flow blade, and the second blade 537 can adopt a centrifugal blade. Since the number of centrifugal blades is not affected by the size of the hub and the limitation of the hub ratio, it meets the design requirements of a small hub and multiple blades, so that the inner hub 531 can adopt a smaller size structural design, and then compared with the blade structure with only axial flow blades, the second blade 537 in the form of a centrifugal blade can increase the number of the second blade 537, which is conducive to better increasing the air intake volume of the first blade 53a. At this time, by forming an air inlet channel 5311 with the outer hub 533 and the inner hub 531, the outer hub 533 can be used to guide the airflow disturbed by the second blade 537 under the centrifugal action, so that the airflow generated by the second blade 537 is discharged along the first rotating shaft. At this time, the rotation of the first blade 535 can generate an axial or oblique airflow, and then the airflow generated by the first blade 535 and the airflow generated by the second blade 537 can be combined and discharged, so that the first blade 53a can rotate to generate a larger air volume, further increasing the air volume of the air outlet device 100, which is conducive to better reducing the operating power of the fan 51 and improving the practicality and reliability of the air outlet device 100. Among them, the second blade 537 in the form of a centrifugal blade can generate an airflow with a larger wind pressure, and then the airflow generated by the first blade 535 is mixed with the airflow generated by the second blade 537, so that the airflow generated by the first blade 53a has a higher air pressure and flow, and the blowing effect of the air outlet device 100 is better improved. Since the linear velocity of the inner side of the axial flow blade is smaller than the linear velocity of the outer side, the airflow generated by the axial flow blade has the characteristics of small inner velocity and large outer velocity. Therefore, when the first blade 535 adopts an axial flow blade, by setting the second blade 537 between the inner hub 531 and the outer hub 533, the airflow generated by the second blade 537 can be used to compensate for the defect of insufficient inner linear velocity of the first blade 535, so that the first fan blade 53a can blow out a more uniform airflow, better realize the large air volume intake effect of the air outlet device 100, and further improve the structural stability and reliability of the air outlet device 100.

[0046] Among them, when the support member 33 is formed with a guiding arc surface on the side facing the air inlet, the projection of the air inlet flow channel 5311 on the support member 33 can overlap with at least part of the guiding arc surface, so that the airflow formed by the disturbance of the second blade 537 can be better merged into the airflow formed by the disturbance of the first blade 535 under the guiding action of the guiding arc surface for mixing, which is conducive to better reducing the turbulence of the inlet airflow of the air outlet device 100, reducing the flow velocity attenuation and noise of the inlet airflow, and further improving the practicality and reliability of the air outlet device 100.

[0047] See also Figure 4 and Figure 7 In an embodiment of the utility model, the outer hub 533 includes a first air gathering ring 5331 and a second air gathering ring 5333, the first blade 535 is connected to the outer periphery of the first air gathering ring 5331; the second air gathering ring 5333 is arranged inside the first air gathering ring 5331, one end of the second air gathering ring 5333 is connected to the inner wall of the first air gathering ring 5331, and the second blade 537 connects the inner hub 531 and the second air gathering ring 5333. The outer periphery of the second air gathering ring 5333 is arranged at an angle to the inner wall of the first air gathering ring 5331, and the width of the second air gathering ring 5333 is configured to gradually increase from the air inlet toward the air outlet.

[0048] 3. In the present embodiment, by setting an inclined second air focusing ring 5333 in the first air focusing ring 5331, the second air focusing ring 5333 can be designed with a gradually expanding trumpet-shaped structure along the air inlet direction. The inner hub 531 and the second air focusing ring 5333 are connected by the second blades 537, so that the air can enter the air inlet channel 5311 and then pass through the second air focusing ring 5333 and the inner hub 531 to be disturbed by the second blades 537. Due to the disturbance effect of the second blades 537 of the centrifugal blades, the airflow can be subjected to a certain centrifugal force between the second air focusing ring 5333 and the inner hub 531, so that the airflow can flow along the inner wall of the second air focusing ring 5333. At this time, by setting the second air focusing ring 5333 inclined, the airflow generated by the second blades 537 can be blown out obliquely along the inner wall of the second air focusing ring 5333, which is beneficial to guiding and exhausting the airflow, so that the airflow can be more easily discharged from between the inner hub 531 and the second air focusing ring 5333, thereby reducing turbulence or noise generated by the airflow. In addition, due to the inclined setting of the second wind focusing ring 5333, the airflow can be blown out of the air inlet channel 5311 obliquely, so that the airflow disturbed by the second blade 537 can more quickly meet the airflow disturbed by the first blade 535, thereby achieving rapid mixing of the two airflows, thereby better improving the flow rate of the mixed airflow generated by the first fan blade 53a, and further improving the high-speed blowing effect of the air outlet device 100.

[0049] See also Figures 2 to 4In the embodiment of the utility model, the air outlet body 10 is further provided with an air inlet grille 13 and an air outlet grille 15. The air inlet grille 13 is connected to one end of the air outlet body 10 and covers the air inlet setting. The air inlet grille 13 is provided with an air inlet avoidance opening 131 communicating with the fixed through hole. The air outlet grille 15 is connected to the other end of the air outlet body 10 and covers the air outlet setting. The air outlet grille 15 is provided with an air outlet avoidance opening 151 communicating with the fixed through hole.

[0050] In this embodiment, by respectively providing an air inlet grille 13 and an air outlet grille 15 at the air inlet and the air outlet of the air outlet main body 10, the air inlet grille 13 and the air outlet grille 15 can be used to prevent the user from accidentally touching the two fan blades of the fan assembly 50 during the operation of the air outlet device 100. At the same time, it can prevent some debris in the environment from entering the accommodating cavity and interfering with and colliding with the fan blades, thereby damaging the fan blades with a certain probability, thereby achieving the protective effect of the air outlet device 100 on the fan blades and further improving the structural stability and reliability of the air outlet device 100.

[0051] Among them, the air inlet grille 13 can be provided with external threads or snap-fit ​​grooves and other structures on the outer peripheral side. In this case, internal threads and snap-fit ​​protrusions and other structures can be provided on the inner wall of the air outlet body 10 near the air inlet, so that the outer peripheral side of the air inlet grille 13 and the inner wall of the air outlet body 10 can be fixed by threaded cooperation or snap-fit ​​cooperation; or, the air inlet grille 13 can be provided with a collar, which can be set to the size of the end of the air outlet body 10 with the air inlet, so that the collar can be sleeved on the end of the air outlet body 10. In this case, internal threads and snap-fit ​​protrusions can be provided on the inner wall of the collar. The air inlet grille 13 is provided with a protrusion and other structures, and an external thread or a snap-in groove and other structures are provided on the outer periphery of the end of the air outlet main body 10, so that the inner wall of the ring of the air inlet grille 13 and the outer wall of the air outlet main body 10 can be fixed by means of threaded cooperation or snap-in cooperation, and then the air inlet grille 13 and the air outlet main body 10 can be conveniently disassembled and assembled by means of threaded connection or snap-in connection, thereby further improving the assembly convenience and reliability of the air inlet grille 13 and the air outlet main body 10, facilitating the disassembly and assembly of the air inlet grille 13 for cleaning and maintenance during daily use, and improving the practicality and reliability of the air outlet device 100.

[0052] In addition, the air outlet grille 15 can be provided with external threads or snap-fit ​​grooves on the outer circumference. In this case, internal threads and snap-fit ​​protrusions can be provided on the inner wall of the air outlet body 10 near the air outlet, so that the outer circumference of the air outlet grille 15 and the inner wall of the air outlet body 10 can be fixed by threaded fit or snap-fit ​​fit. Alternatively, the air outlet grille 15 can be provided with a collar, which can be set to the size of the end of the air outlet body 10 with the air outlet, so that the collar can be sleeved on the end of the air outlet body 10. In this case, internal threads and snap-fit ​​protrusions can be provided on the inner wall of the collar. The air outlet grille 15 is provided with a protrusion and other structures, and an external thread or a snap-in groove and other structures are provided on the outer periphery of the end of the air outlet main body 10, so that the inner wall of the ring of the air outlet grille 15 and the outer wall of the air outlet main body 10 can be fixed by means of threaded cooperation or snap-in cooperation, and then the air outlet grille 15 and the air outlet main body 10 can be conveniently disassembled and assembled by means of threaded connection or snap-in connection, thereby further improving the assembly convenience and reliability of the air outlet grille 15 and the air outlet main body 10, facilitating the disassembly and assembly of the air outlet grille 15 for cleaning and maintenance during daily use, and improving the practicality and reliability of the air outlet device 100.

[0053] By utilizing the detachable air inlet grille 13 and the air outlet grille 15, the air outlet device 100 can more conveniently clean the dust accumulated in the air outlet channel 11, thereby better ensuring the neat air outlet of the air outlet device 100, preventing the accumulated dust from affecting the air volume of the air outlet airflow, and further improving the practicality and reliability of the air outlet device 100.

[0054] See also Figure 3 , Figure 4 and Figure 7 In the embodiment of the utility model, the stator 511 includes a fixed sleeve shaft 5111 and a stator core 5113, the fixed sleeve shaft 5111 is provided with the fixed through hole, the fixed sleeve shaft 5111 is sleeved on the mounting column 30, the fixed sleeve shaft 5111 includes a connecting section and a fixing section, and the stator core 5113 is connected to the outer periphery of the fixing section. The outer rotor 513 is sleeved on the outer periphery of the fixed sleeve shaft 5111 and is arranged around the stator core 5113. The fan 51 also includes a bearing 515, which is arranged between the connecting section and the outer rotor 513 and connects the outer periphery of the connecting section and the inner wall of the outer rotor 513, so that the outer rotor 513 can rotate relative to the fixed sleeve shaft 5111.

[0055] In this embodiment, by making the fixed sleeve shaft 5111 of the stator 511 include two shaft sections, the connecting section and the fixed section, the stator core 5113 can be sleeved and installed on the fixed section. The stator core 5113 can be made of a coil or a magnetic material, so that the stator core 5113 can generate a certain magnetic field after power is turned on or the stator core 5113 itself has a certain magnetism. Taking the structure of the electronic core as a coil as an example, the outer rotor 513 is sleeved on the outer periphery of the fixed sleeve shaft 5111, so that the outer rotor 513 can be arranged around the stator core 5113. At this time, permanent magnets and other magnetic parts can be arranged in the part of the outer rotor 513 around the stator core 5113. The magnetic field generated by the stator core 5113 when power is turned on can act on the outer rotor 513, thereby causing the outer rotor 513 to rotate relative to the stator 511. Among them, a certain gap can be maintained between the outer rotor 513 and the stator core 5113 and the fixed section, so that the fixed section is only inserted into the outer rotor 513. The stator 511 is disposed inside the rotor 513, but is not connected to the outer rotor 513. At this time, a bearing 515 is arranged between the outer rotor 513 and the connecting section, and the inner ring of the bearing 515 is sleeved and fixed on the outer periphery of the connecting section, so that the outer ring of the bearing 515 is fixedly arranged on the inner wall of the outer rotor 513. The rotational connection characteristic of the bearing 515 can ensure the rotational connection between the stator 511 and the outer rotor 513, so that the outer rotor 513 can stably rotate relative to the stator 511 on the outer periphery of the stator 511 when affected by the magnetic field of the stator 511, thereby realizing stable operation of the fan 51.

[0056] Therefore, the fixed sleeve shaft 5111 can make the length of the connecting section greater than or equal to the length of the fixed section. At this time, by arranging a bearing 515 between the connecting section and the outer rotor 513, the inner ring of the bearing 515 is sleeved and fixed on the outer periphery of the connecting section, and the outer ring of the bearing 515 is fixed on the inner ring of the outer rotor 513. By utilizing the design of the connecting section and the fixed section of the fixed sleeve shaft 5111 to shift the center of gravity of the entire structure toward the connecting section, the fan 51 can be provided with the bearing 515 only on the connecting section of the fixed sleeve shaft 5111, and the rotational connection between the outer rotor 513 and the stator 511 can be stably realized, thereby ensuring the stable rotational support of the bearing 515 on the outer rotor 513, and further realizing the single-sided bearing 515 support installation mode of the fan 51, reducing the setting of the connection support structure of the fixed sleeve shaft 5111 between the fixed section and the outer rotor 513, so that the outer rotor 513 can be arranged with an integral annular structure or a sleeve structure. Among them, the bearing 515 can be arranged close to the junction of the connecting section and the fixed section, and the stator core 5113 can be arranged close to the junction of the fixed section and the connecting section, so that the overall center of gravity of the fan 51 can overlap with the position of the bearing 515 as much as possible, ensuring the stable supporting effect of the bearing 515 on the rotation of the outer rotor 513, and further improving the overall structural stability and reliability of the fan 51.

[0057] By adjusting the structural setting of the stator 511, the stator 511 and the outer rotor 513 can be provided with a bearing 515 on one side to ensure the stable operation of the fan 51, which can effectively reduce the overall thickness of the fan 51 and realize the miniaturized design of the fan 51. This can further reduce the space occupied by the fan assembly 50 in the air outlet device 100, which is conducive to better reducing the overall structure of the air outlet device 100, so that the air outlet device 100 can achieve a large air volume blowing effect with a smaller size design, thereby further improving the practicality and reliability of the air outlet device 100.

[0058] In an embodiment of the utility model, the number of the bearing 515 is one, and the bearing 515 is arranged close to the stator core 5113. Alternatively, the bearing 515 includes at least two bearing 515 units, and the at least two bearing 515 units are sequentially arranged at intervals along the extension direction of the fixed sleeve shaft 5111, and are respectively connected to the outer wall of the connecting section and the inner wall of the outer rotor 513.

[0059] It is understandable that the fan 51 can be provided with one or more bearing 515 units between the connecting section and the outer rotor 513, so that during the production process, according to the working conditions of the equipment where the fan 51 is installed, a suitable number of bearing 515 units can be selected to support and fix the outer rotor 513, thereby ensuring stable and reliable operation of the fan 51.

[0060] In some embodiments, the fan 51 may only adopt a structural setting of one bearing 515. In this case, the installation position of the bearing 515 on the connecting section of the fixed sleeve shaft 5111 may be set as close as possible to the intersection of the connecting section and the fixed section, so that the bearing 515 can be installed as close to the center of gravity of the fixed sleeve shaft 5111 as possible, thereby better ensuring the connection stability and reliability between the stator 511 and the outer rotor 513, and improving the overall stability of the air outlet device 100.

[0061] In other embodiments, the fan 51 may also adopt the configuration of at least two bearing 515 units to better improve the connection stability and reliability between the stator 511 and the outer rotor 513, and ensure the stable rotation of the outer rotor 513. At this time, at least two bearing 515 units may be arranged in sequence along the extension direction of the connecting section, and the inner ring of each bearing 515 unit may be sleeved and fixed on the outer periphery of the connecting section, and the outer ring of each bearing 515 unit may be connected and fixed on the inner wall of the outer rotor 513. Under the action of at least two bearing 515 units, the contact area between the bearing 515 connecting the stator 511 connecting section and the outer rotor 513 may be better improved, so that the bearing 515 can play a better supporting role on the outer rotor 513, and better reduce the shaking of the outer rotor 513 when rotating, further improving the structural stability and reliability of the fan 51, and ensuring the stable operation of the air outlet device 100.

[0062] In the embodiment of the utility model, the outer rotor 513 is provided with a magnetic ring, which is fixedly mounted on the inner wall of the outer rotor 513 and arranged around the stator core 5113. The stator core 5113 and the magnetic ring are arranged alternately, and the partial structure of the stator core 5113 close to the connecting section does not overlap with the projection of the magnetic ring on the fixed sleeve shaft 5111, and the partial structure of the magnetic ring away from the connecting section does not overlap with the projection of the stator core 5113 on the fixed sleeve shaft 5111.

[0063] In this embodiment, during the operation of the fan 51, the rotation of the fan blades connected to the outer rotor 513 will cause the outer rotor 513 to be subjected to a force from the connecting section of the fixed sleeve shaft 5111 to the fixed section on the fan blades. At this time, by staggering the magnetic rings of the stator core 5113 and the outer rotor 513, a portion of the structure of the stator core 5113 close to the connecting section on the fixed sleeve shaft 5111 can be exposed outside the encirclement of the magnetic ring, and a portion of the structure of the magnetic ring away from the connecting section of the fixed sleeve shaft 5111 can be separated from the stator core 5113. 13, so that the magnetic ring and the stator core 5113 are partially fitted and sleeved, and part of the structure of the magnetic ring is offset outward, and then the offset between the stator core 5113 and the magnetic ring can be used to make the stator core 5113 exert a certain force on the magnetic ring from the fixed section of the fixed sleeve shaft 5111 to the connecting section, so that the load force on the outer rotor 513 during the rotation process can be well offset, preventing the outer rotor 513 from separating from the stator 511, ensuring the stable operation of the fan 51, and further improving the overall structural stability and reliability of the air outlet device 100.

[0064] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An air outlet device, characterized in that: include: An air outlet body, wherein an air outlet channel is formed in the air outlet body, and an air inlet and an air outlet connected to the air outlet channel are respectively provided at two ends of the air outlet body; A mounting column, the mounting column is arranged in the air outlet channel, a center hole is arranged in the mounting column, the center hole is arranged through the mounting column along the air outlet direction, a support is arranged on the outer periphery of the mounting column, the support is connected to the channel inner wall of the air outlet channel, and the mounting column is divided into a first mounting section close to the air inlet and a second mounting section close to the air outlet; Two fan assemblies, the fan assemblies include a fan and blades, the fan includes a stator and an outer rotor, the outer rotor is rotatably sleeved on the outer periphery of the stator, the blades are connected to the outer rotor, the stator is provided with a fixing through hole, the stator of one fan is sleeved on the outer periphery of the first mounting section, the stator of the other fan is sleeved on the outer periphery of the second mounting section, and the fixing through holes of the two stators are respectively connected to the two ends of the center hole.

2. The air outlet device according to claim 1, characterized in that: The support components include: A supporting enclosure, the supporting enclosure is arranged around the mounting column and divides the mounting column into the first mounting section and the second mounting section, and the stators of the two fan assemblies are respectively connected to opposite sides of the supporting enclosure; At least two support guide vanes are connected to the outer periphery of the support enclosure at intervals and connected to the inner wall of the air outlet channel.

3. The air outlet device according to claim 2, characterized in that: A guide slope is formed on one side of the support guide vane facing the air inlet.

4. The air outlet device according to claim 3, characterized in that: The support guide vane comprises: a first support plate, wherein a projection of the first support plate on the support enclosure is arranged at an angle to the central axis of rotation of the fan, and a side of the first support plate facing the air inlet is formed as the guide slope; and A second support plate, the second support plate is connected to one side of the first support plate and is arranged at an angle with the first support plate, the first support plate and the second support plate enclose a weight reduction groove; And / or, a guide arc surface is formed on a side of the support enclosure facing the air inlet.

5. The air outlet device according to claim 1, characterized in that: The two fan blades of the fan assembly are defined as a first fan blade and a second fan blade, wherein the first fan blade is disposed between the support member and the air inlet, and the second fan blade is disposed between the support member and the air outlet; The first fan blade comprises: An inner hub, the inner hub being sleeved on the outer rotor; An outer hub, the outer hub is coaxially arranged with the inner hub and sleeved on the outer circumference of the inner hub, and an air inlet channel is formed between the outer hub and the inner hub; a first blade connected to an outer circumference of the outer hub; and The second blade is disposed in the air inlet channel and is connected to the outer hub and the inner hub.

6. The air outlet device according to claim 5, characterized in that: The outer hub comprises: a first air gathering ring, wherein the first blades are connected to the outer periphery of the first air gathering ring; a second wind gathering ring, wherein the second wind gathering ring is arranged inside the first wind gathering ring, one end of the second wind gathering ring is connected to the inner wall of the first wind gathering ring, and the second blade is connected to the inner hub and the second wind gathering ring; The outer periphery of the second air focusing ring is arranged at an angle with the inner wall of the first air focusing ring, and the width of the second air focusing ring is configured to gradually increase in a direction from the air inlet toward the air outlet.

7. The air outlet device according to any one of claims 1 to 6, characterized in that: The air outlet body is also provided with an air inlet grille and an air outlet grille, wherein the air inlet grille is connected to one end of the air outlet body and covers the air inlet, and the air inlet grille is provided with an air inlet avoidance opening connected to the fixed through hole; The air outlet grille is connected to the other end of the air outlet body and covers the air outlet. The air outlet grille is provided with an air outlet avoidance port connected to the fixed through hole.

8. The air outlet device according to any one of claims 1 to 6, characterized in that: The stator comprises a fixed sleeve shaft and a stator core, the fixed sleeve shaft is provided with the fixed through hole, the fixed sleeve shaft is sleeved on the mounting column, the fixed sleeve shaft comprises a connecting section and a fixing section, and the stator core is connected to the outer periphery of the fixing section; The outer rotor is sleeved on the outer circumference of the fixed sleeve shaft and is arranged around the stator core. The fan also includes a bearing, which is arranged between the connecting section and the outer rotor and connects the outer circumference of the connecting section and the inner wall of the outer rotor so that the outer rotor can rotate relative to the fixed sleeve shaft.

9. The air outlet device according to claim 8, characterized in that: The number of the bearing is one, and the bearing is arranged close to the stator core; Alternatively, the bearing comprises at least two bearing units, and the at least two bearing units are sequentially spaced apart along the extending direction of the fixed sleeve shaft and are respectively connected to the outer wall of the connecting section and the inner wall of the outer rotor.

10. The air outlet device according to claim 8, characterized in that: The outer rotor is provided with a magnetic ring, which is fixedly mounted on the inner wall of the outer rotor and arranged around the stator core; The stator core and the magnetic ring are arranged alternately, the partial structure of the stator core close to the connecting section does not overlap with the projection of the magnetic ring on the fixed sleeve shaft, and the partial structure of the magnetic ring away from the connecting section does not overlap with the projection of the stator core on the fixed sleeve shaft.

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