Blowing device

Abstract

The invention discloses an air blowing device, and relates to the technical field of fan equipment.The air blowing device comprises an air outlet barrel, a fixing piece and a fan assembly, a containing cavity is formed in the air outlet barrel, and the two ends of the air outlet barrel are provided with a first air inlet and an air outlet which communicate with the containing cavity correspondingly; the fixing piece is arranged in the containing cavity, and supporting guide blades connected with the inner wall of the air outlet barrel are arranged on the periphery of the fixing piece. The fan assembly comprises a fan, a first fan blade and a second fan blade, the first fan blade is arranged between the fixing piece and the first air inlet, the second fan blade is arranged between the fixing piece and the air outlet, and the fan is in transmission connection with the first fan blade and the second fan blade; the air outlet barrel is further provided with an overflowing cavity and an overflowing opening communicated with the overflowing cavity and the containing cavity, the overflowing opening is formed in the side, back to the air outlet, of the second fan blade, and a second air inlet communicated with the overflowing cavity is formed in the peripheral side of the air outlet barrel. According to the technical scheme, small-size high-speed blowing of the blowing device is achieved, and the practicability and reliability of the blowing device are further improved.

Description

Technical Field

[0001] The invention relates to the technical field of fan equipment, and in particular to a blowing device. Background Art

[0002] In the related art, a fan, a hair dryer or other blowing device can usually use a high-power fan or a large-sized air outlet structure to achieve a high-speed blowing effect of the blowing device, so that the blowing device can better meet the user's usage needs.

[0003] However, the larger size of the air outlet structure will increase the overall volume of the hair dryer, making it inconvenient to transport and use the hair dryer, thus affecting the convenience of the hair dryer. The production cost of a hair dryer using a high-power fan is relatively high, and the energy consumption is high, thus reducing the practicality of the hair dryer. Summary of the invention

[0004] The main purpose of the present invention is to propose a blowing device, aiming to improve the air outlet structure of the blowing device so that the blowing device can achieve high wind speed blowing with a smaller structural size, enhance the blowing effect of the blowing device, and further improve the practicability and reliability of the blowing device.

[0005] To achieve the above-mentioned purpose, the blowing device proposed in the present invention includes an air outlet tube, a fixing member and a fan assembly, wherein a containing cavity is formed in the air outlet tube, and a first air inlet and an air outlet connected to the containing cavity are respectively provided at two ends of the air outlet tube; the fixing member is arranged in the containing cavity, and a supporting guide vane connected to the inner wall of the air outlet tube is provided on the periphery of the fixing member; the fan assembly is arranged in the containing cavity, and the fan assembly includes a fan, a first fan blade and a second fan blade, the first fan blade is arranged between the fixing member and the first air inlet, the second fan blade is arranged between the fixing member and the air outlet, the fan is connected to the fixing member, and is connected to the first fan blade and the second fan blade by transmission. Among them, the air outlet tube is also provided with a flow cavity and a flow port connecting the flow cavity and the containing cavity, the flow port is arranged on the side of the second fan blade facing away from the air outlet, and the second air inlet connected to the flow cavity is provided on the periphery of the air outlet tube.

[0006] In one embodiment, the rotation radius of the first blade is defined as R1, the rotation radius of the second blade is defined as R2, and the distance between the end of the support guide vane facing away from the fixing member and the rotation center axis of the fan is defined as R3, wherein R1<R3, R2>R3. And / or, the area of ​​the accommodating cavity between the first air inlet and the fixing member is defined as the first air cavity, and the cross-sectional width of the first air cavity is configured to gradually decrease along the air outlet direction. And / or, the air outlet is provided with a plurality of supporting ribs at the flow outlet.

[0007] In one embodiment, a mounting groove is provided on a side of the fixing member facing the air outlet, and a avoidance hole connected to the mounting groove is provided on a side of the fixing member facing the first air inlet; at least part of the structure of the fan is installed and fixed in the mounting groove, and a first shaft segment and a second shaft segment are respectively provided at both ends of the fan, the first shaft segment passes through the avoidance hole to connect to the first fan blade, and the second shaft segment is connected to the second fan blade.

[0008] In one embodiment, the fixing member is provided with an arc-shaped guide surface on one side facing the first air inlet, and the avoidance hole is provided on the arc-shaped guide surface. And / or, the fan is provided with a control circuit board, and the control circuit board is sleeved on the outer periphery of the fan and is provided in the installation groove.

[0009] In one embodiment, the air outlet duct 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 duct and covers the first air inlet setting, and the air outlet grille is connected to the other end of the air outlet duct and covers the air outlet setting.

[0010] In one embodiment, the air inlet grille is detachably connected to the air outlet cylinder. And / or, the air outlet grille is detachably connected to the air outlet cylinder. And / or, the air inlet grille is sleeved on one end of the air outlet cylinder, the outer periphery of the air inlet grille and the outer periphery of the air outlet cylinder are spaced to form the flow cavity, and the second air inlet is formed on the peripheral side of the air inlet fan blade.

[0011] In one embodiment, the first fan blade includes an inner hub, an outer hub, at least two first blades and at least two second blades, the inner hub is drivingly connected to the fan; 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; at least two of the first blades are connected to the outer circumference of the outer hub at intervals; at least two of the second blades are arranged at intervals in the air inlet channel and connect the outer hub and the inner hub.

[0012] In one embodiment, the outer hub includes a first wind focusing ring and a second wind focusing ring, the first blade is connected to the outer periphery of the first wind focusing ring; the second wind focusing ring is arranged in the first wind focusing ring, one end of the second wind focusing ring is connected to the inner wall of the first wind focusing ring, and the second blade connects the inner hub and the second wind focusing ring; the outer periphery of the second wind focusing ring is set at an angle to the inner wall of the first wind focusing ring, and the width of the second wind focusing ring is configured to gradually increase in the direction from the first air inlet toward the air outlet.

[0013] In one embodiment, a guide slope is formed on a side of the support guide vane facing the first fan blade.

[0014] 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 fixing member is set at an angle with the rotation center axis of the fan assembly, and the side of the first support plate facing the first fan blade is formed as the guide slope; the second support plate is connected to one side of the first support plate and is set 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.

[0015] In one embodiment, a first wire passing hole connected to the installation groove is provided on the outer periphery of the fixing member, and a second wire passing hole connected to the weight reducing groove is provided on the outer periphery of the air guide tube; the fan is provided with a connecting cable, the connecting cable is passed through the first wire passing hole and the second wire passing hole, and is partially accommodated in the weight reducing groove.

[0016] The technical solution of the present invention is to set a first air inlet at one end of the air outlet cylinder and a second air inlet on the peripheral side of the air outlet cylinder. The operation of the fan assembly can be used to drive the airflow to blow from the first air inlet toward the air outlet along the fan rotation axis, and the airflow on the peripheral side of the air outlet cylinder can pass through the flow cavity and the flow port from the second air inlet into the accommodating cavity for convergence, which is conducive to better increasing the air intake flow rate of the blowing device, so that the blowing device can achieve a stronger blowing effect. At the same time, the airflow flowing in at the flow port can be used to eliminate the vortex formed between the second fan blade and the inner wall of the air outlet cylinder, so as to better reduce the wind loss of the flowing airflow in the accommodating cavity and reduce the wind noise generated by the blowing device, so that the blowing device can achieve a better blowing effect under a smaller size and lower fan power, and effectively improve the practicality and structural reliability of the blowing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0018] Figure 1 A schematic structural diagram of an embodiment of a blowing device provided by the present invention;

[0019] Figure 2 for Figure 1 A structural exploded view of an embodiment of a blowing device;

[0020] Figure 3 for Figure 1 A partial cross-sectional schematic diagram of an embodiment of a blowing device;

[0021] Figure 4 for Figure 1 A partial cross-sectional schematic diagram of another embodiment of a blowing device;

[0022] Figure 5 for Figure 1 A cross-sectional view of an embodiment of a blowing device;

[0023] Figure 6 for Figure 5 A flow diagram of the internal air flow of an embodiment of a blowing device;

[0024] Figure 7 for Figure 1 A cross-sectional view of another embodiment of the blowing device;

[0025] Figure 8 for Figure 7 A partial dimension diagram of an embodiment of a blowing device;

[0026] Fig. 9 for Figure 1 A schematic structural diagram of an embodiment of a first fan blade of a blowing device.

[0027] Description of Figure Numbers:

[0028] 100, blowing device; 10, air outlet tube; 11, accommodating chamber; 13, air inlet grille; 15, air outlet grille; 17, second wiring hole; 19, flow chamber; 191, supporting ribs; 30, fixing member; 31, supporting guide vane; 311, first supporting plate; 313, second supporting plate; 315, weight reduction groove; 317, guide slope; 33, mounting groove; 35, arc-shaped guide surface; 37, first wiring hole; 50. Fan assembly; 51. Fan; 511. First shaft section; 513. Second shaft section; 515. Control circuit board; 53. First fan blade; 531. Inner hub; 5311. Drainage portion; 5313. Connecting portion; 5315. Air inlet channel; 533. Outer hub; 5331. First air focusing ring; 5333. Second air focusing ring; 535. First blade; 537. Second blade; 55. Second fan blade.

[0029] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), 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 indication will also change accordingly.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, 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 present invention.

[0033] In the related art, a fan, a hair dryer or other blowing device can usually use a high-power blower or a large-sized air outlet structure to achieve a high-speed blowing effect of the blowing device, so that the blowing device can better meet the user's use needs. However, the large size of the air outlet structure will increase the overall volume of the blowing device, which is inconvenient to transport and use the blowing device, affecting the convenience of the blowing device; and the production cost of the blowing device using a high-power blower is relatively high, and the energy consumption is large, which reduces the practicality of the blowing device. In view of the above problems, the present invention proposes a blowing device 100.

[0034] See also Figures 1 to 9 In one embodiment of the present invention, the blowing device 100 includes an air outlet 10, a fixing member 30 and a fan assembly 50. The air outlet 10 is formed with a receiving cavity 11, and the two ends of the air outlet 10 are respectively provided with a first air inlet and an air outlet connected to the receiving cavity 11; the fixing member 30 is arranged in the receiving cavity 11, and the outer periphery of the fixing member 30 is provided with a supporting guide vane 31 connected to the inner wall of the air outlet 10; the fan assembly 50 is arranged in the receiving cavity, and the fan assembly 50 includes a fan The fan 51, the first fan blade 53 and the second fan blade 55, the first fan blade 53 is arranged between the fixing member 30 and the first air inlet, the fan 51 is connected to the fixing member 30, and is in transmission connection with the first fan blade 53 and the second fan blade 55; the air outlet cylinder 10 is also provided with a flow cavity 19 and a flow port connecting the flow cavity 19 and the accommodating cavity 11, the flow port is arranged on the side of the second fan blade 55 facing away from the air outlet, and the peripheral side of the air outlet cylinder 10 is provided with a second air inlet connected to the flow cavity 19.

[0035] It can be understood that the blowing device 100 can use the fan assembly 50 to drive the first blade 53 and the second blade 55 to rotate in the air outlet tube 10, so that the fan assembly 50 can disturb the air in the accommodating chamber 11 to generate airflow, and then drive the air in the environment to continuously enter the accommodating chamber 11 from the first air inlet, and under the action of the fan assembly 50, the air forms an airflow and is blown out from the air outlet, thereby ensuring the blowing effect of the blowing device 100.

[0036] In the present application, the fixing member 30 can be arranged at the central area of ​​the accommodating cavity 11. By using the support guide vanes 31 to stably arrange the fixing member 30 in the accommodating cavity 11, the airflow can flow through the gaps between the multiple support guide vanes 31 arranged at intervals in the accommodating cavity 11, thereby reducing the obstruction of the fixing member 30 to the airflow, and ensuring the stable and reliable blowing of the blowing device 100. At this time, by installing and fixing the fan 51 in the installation groove 33 of the fixing member 30, the fan 51 can have a single rotating shaft structure arranged through the fan 51, so that the rotating shaft structure can protrude at both ends of the fan 51 to form a first shaft section 511 and a second shaft section 513. When the fan 51 is powered on and rotated, the first shaft section 511 and the second shaft section 513 can be rotated synchronously. By setting a first fan blade 53 between the fixing member 30 and the first air inlet, and setting a second fan blade 55 between the fixing member 30 and the air outlet, the first shaft segment 511 can pass through the avoidance hole that passes through the bottom wall of the installation groove 33 and the arc guide surface 35 to connect the first fan blade 53, and the second shaft segment 513 can connect the second fan blade 55 between the fixing member 30 and the air outlet, so that the fan assembly 50 can drive the first fan blade 53 and the second fan blade 55 to rotate synchronously in the accommodating chamber 11, which is beneficial to use the two fan blades to better disturb the air entering the accommodating chamber 11, so that the airflow formed by the air can have a larger flow rate, thereby better realizing the high-speed blowing effect of the blowing device 100.

[0037] In addition, it should be noted that the structural design of the fan assembly 50 in the present application is not limited to the above-mentioned method. The fan 51 can also use a coaxial device to connect the first fan blade 53 and the second fan blade 55 to achieve the driving of the first fan blade 53 and the second fan blade 55 by the fan 51; or, the blowing device 100 can also make the fan 51 have two independent fan units, and use the two fan units to independently drive the first fan blade 53 and the second fan blade 55 respectively, so as to achieve the independent rotation of the first fan blade 53 and the second fan blade 55 in the accommodating cavity 11, which is conducive to achieving a better blowing effect of the fan assembly 50 in the blowing device 100; of course, there are many other transmission connection methods between the fan 51 and the first fan blade 53 and the second fan blade 55, and the present application does not limit this, as long as it can ensure the stable driving effect of the fan 51 on the first fan blade 53 and the second fan blade 55.

[0038] Among them, by forming an arc-shaped guide surface 35 on the side of the fixing member 30 facing the first air inlet, a conical cone can be set on the side of the fixing member 30 facing the first air inlet, and the outer wall of the conical cone can be used to form the arc-shaped guide surface 35, or part of the outer wall of the fixing member 30 can be inclined toward the first axis segment 511, so that part of the outer wall of the fixing member 30 is formed as the arc-shaped guide surface 35. Under the action of the arc-shaped guide surface 35, the airflow formed after the air is disturbed by the first fan blade 53 can flow smoothly toward the second fan blade 55 along the arc-shaped guide surface 35, thereby realizing the guiding effect on the incoming airflow, which is conducive to better reducing the attenuation of the airflow velocity, and at the same time can reduce the noise generated by the turbulence of the airflow between the first fan blade 53 and the second fan blade 55, further improving the practicality and reliability of the blowing device 100.

[0039] By setting a flow chamber 11 in the air outlet cylinder 10, and setting a flow port in the air outlet cylinder 10 to communicate with the flow chamber 19, the flow port and the side of the second fan blade 55 facing away from the air outlet are arranged opposite to each other, and the second air outlet on the peripheral side of the air outlet cylinder 10 can be used to connect with the flow chamber 19 for air intake, so that under the turbulence effect of the fan assembly 50, the air in the environment can be stably driven into the flow chamber 19, and flows into the accommodating chamber 11 through the flow chamber 19 and the flow port, which is beneficial for the blowing device 100 to take in air from one end and the peripheral side of the air outlet cylinder 10 at the same time, and is beneficial for better increasing the air intake volume of the blowing device 100, so that the blowing device 100 can achieve a better blowing effect and meet the practical needs of users. In addition, by setting the flow port on the side of the second fan blade 55 facing away from the air outlet, the airflow discharged from the flow port can flow through the gap between the edge of the second fan blade 55 and the inner wall of the air outlet cylinder 10, which is beneficial to utilize this part of the airflow to break the vortex formed between the edge of the second fan blade 55 and the inner wall of the air outlet cylinder 10, effectively reducing the wind loss of the outlet airflow in the accommodating cavity 11, and at the same time can play a certain effect of reducing the vortex noise, effectively improving the blowing effect and practicality of the blowing device 100.

[0040] Therefore, the technical solution of the present application, by setting a first air inlet at one end of the air outlet cylinder 10 and a second air inlet on the peripheral side of the air outlet cylinder 10, can utilize the operation of the fan assembly 50 to drive the airflow from the first air inlet along the rotation axis of the fan 51 toward the air outlet, and enable the airflow on the peripheral side of the air outlet cylinder 10 to pass through the flow cavity 19 and the flow port from the second air inlet into the accommodating cavity 11 for convergence, which is conducive to better increasing the air intake flow rate of the blowing device 100, so that the blowing device 100 can achieve a stronger blowing effect, and at the same time, the airflow flowing in at the flow port can be utilized to eliminate the vortex formed between the second fan blade 55 and the inner wall of the air outlet cylinder 10, so as to better reduce the wind loss of the flowing airflow in the accommodating cavity 11, and reduce the wind noise generated by the blowing device 100, so that the blowing device 100 can achieve a better blowing effect under a smaller size and lower fan power, thereby effectively improving the practicality and structural reliability of the blowing device 100.

[0041] See also Figure 7 and Figure 8 In an embodiment of the present invention, the rotation radius of the first blade 53 is defined as R1, the rotation radius of the second blade 55 is defined as R2, and the distance between the end of the support guide vane 31 facing away from the fixing member 30 and the rotation center axis of the fan 51 is defined as R3, wherein R1<R3, R2>R3.

[0042] In this embodiment, the width of the area of ​​the accommodating chamber 11 for accommodating the fixing member 30 can be set smaller than the width of the area of ​​the accommodating chamber 11 for accommodating the second fan blade 55. In this way, the rotation radius R2 of the second fan blade 55 can be set larger than the spacing R3 between the support guide vane 31 and the central axis of the fixing member 30, so that the blowing device 100 can use the second fan blade 55 with a larger size to achieve a better blowing effect, which is conducive to better increasing the blowing wind force of the blowing device 100. At the same time, the rotation radius R1 of the first fan blade 53 can be set smaller than the spacing R3 between the support guide vane 31 and the central axis of the fixing member 30; at this time, under the effect of this structural size, in the process of the airflow entering the accommodating chamber 11 from the first air inlet and flowing toward the air outlet, the first fan blade 53 can first disturb the airflow to converge toward the fixing member 30. By setting the length of the first fan blade 53 smaller than the length of the support guide vane 31, and by setting the length of the second fan blade 55 larger than the length of the support guide vane 31, the outlet airflow can be gradually diffused in the air outlet tube 10, making the outlet airflow flow smoother and reducing The turbulence of the airflow effectively increases the air pressure and air volume of the outlet air flow, and can better reduce the noise generated during the operation of the blowing device 100, thereby effectively increasing the flow rate and wind force of the outlet air flow in the process of flowing from the fixing part 30 toward the air outlet, so that the blowing device 100 can achieve a better blowing effect; in addition, the use of this combined structural design is also conducive to more convenient production and processing of the air outlet tube 10, facilitates the one-piece molding and demolding of the air outlet tube 10, effectively reduces the production difficulty of the air outlet device 100, and further improves the practicability and structural reliability of the blowing device 100.

[0043] See also Figure 3 and Figure 5 In an embodiment of the present invention, the area of ​​the accommodating cavity 11 between the first air inlet and the fixing member 30 is defined as a first air cavity, and the cross-sectional width of the first air cavity is configured to gradually decrease along the air outlet direction.

[0044] In this embodiment, by gradually reducing the cross-sectional width of the first air cavity between the first air inlet and the fixing member 30 of the accommodating cavity 11 along the air outlet direction, the airflow disturbed by the fan assembly 50 can achieve a better convergence effect when flowing from the first air inlet toward the fixing member 30, which is beneficial to better increase the wind pressure and wind speed of the outlet airflow, so that the blowing device 100 can achieve a better blowing effect.

[0045] In addition, in some embodiments, the flow port can be arranged around the fixing member 30. In this case, the flow port can be arranged in a ring shape to surround the fixing member 30, or the flow port can be arranged in a ring shape with a gap to not completely surround the fixing member 30, so as to ensure the stable structural setting of the blowing device 100. In this case, the air outlet 10 can be provided with a plurality of supporting ribs 191 at the flow port, so that the air outlet 10 can use the supporting ribs 191 to better ensure the stable setting of the flow port, and further improve the structural stability and reliability of the blowing device 100.

[0046] In some embodiments, by providing a fixing member 30 in the accommodating chamber 11 of the air outlet tube 10 and installing the fan 51 on the fixing member 30, the first shaft segment 511 and the second shaft segment 513 at both ends of the fan 51 are respectively connected to the first fan blade 53 and the second fan blade 55, the blowing device 100 can use the fan 51 to drive the two fan blades to rotate synchronously, thereby achieving a better turbulence effect on the air in the accommodating chamber 11, so that the flow rate of the generated airflow can be better improved under the synergistic action of the first fan blade 53 and the second fan blade 55, so that the blowing device 100 can use the fan assembly 50 to generate an airflow with a higher flow rate under a smaller driving power, and is conducive to forming a high-speed airflow in the air outlet tube 10 with a smaller size, so as to better reduce the overall structural size of the blowing device 100 and improve the portability of the blowing device 100. At the same time, by forming an arc-shaped guide surface 35 on the side of the fixing member 30 facing the first air inlet, the turbulence of the airflow after being disturbed by the first fan blade 53 can be reduced under the guiding action of the arc-shaped guide surface 35, which is conducive to better reducing the attenuation of the airflow velocity and achieving a certain noise reduction effect, which is conducive to better realizing the high-speed blowing effect of the blowing device 100 and further improving the practicality and reliability of the blowing device 100.

[0047] See also Figure 2 , Figure 3 and Figure 5 In an embodiment of the present invention, the air outlet 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 10 and covers the first air inlet setting. The air outlet grille 15 is connected to the other end of the air outlet 10 and covers the air outlet setting.

[0048] In this embodiment, by respectively providing an air inlet grille 13 and an air outlet grille 15 at the first air inlet and the air outlet of the air outlet cylinder 10, the air inlet grille 13 and the air outlet grille 15 can be utilized to prevent the user from accidentally touching the first fan blade 53 and the second fan blade 55 during the operation of the blowing device 100. At the same time, it can prevent some debris in the environment from entering the accommodating cavity 11 and interfering with and colliding with the first fan blade 53 and the second fan blade 55, thereby preventing the first fan blade 53 and the second fan blade 55 from being damaged with a certain probability, thereby realizing the protective effect of the blowing device 100 on the first fan blade 53 and the second fan blade 55, and further improving the structural stability and reliability of the blowing device 100.

[0049] In addition, in some embodiments, in order to meet the requirement that the size of the first blade 53 and the second blade 55 is larger than the size of the fixing member 30 and the support guide vane 31, and to meet the requirement that the structure of the air outlet 10 between the first air inlet and the fixing member 30 is tapered, the air outlet 10 can adopt a structure with a middle recess, and the air inlet grille 13 can be a structural setting of the cover body, so that the air inlet grille 13 is sleeved on one end of the air outlet 10, so that the air outlet 10 can achieve a more regular structural setting, which is conducive to making the blowing device 100 more beautiful. At the same time, the air inlet grille 13 sleeved on the air outlet 10 can make the second air inlet directly set on the air inlet grille 13, and the outer periphery of the air inlet grille 13 and the outer periphery of the air outlet 10 are separated to form a flow cavity 19, which is conducive to making the air outlet 10 achieve a more concise structural design, and further improve the practicality and reliability of the blowing device 100.

[0050] See also Figure 2 and Figure 3 In an embodiment of the present invention, the air inlet grille 13 is detachably connected to the air outlet cylinder 10 . And / or, the air outlet grille 15 is detachably connected to the air outlet cylinder 10 .

[0051] In this embodiment, the air inlet grille 13 can be provided with external threads or snap-in grooves on the outer circumference. In this case, internal threads and snap-in protrusions can be provided on the inner wall of the air outlet cylinder 10 near the first air inlet, so that the outer circumference of the air inlet grille 13 and the inner wall of the air outlet cylinder 10 can be fixed by threaded fit or snap-in fit. Alternatively, the air inlet grille 13 can be provided with a sleeve, which can be set to the size of the end of the air outlet cylinder 10 with the first air inlet, so that the sleeve can be sleeved on the end of the air outlet cylinder 10. In this case, an internal thread can be provided on the inner wall of the sleeve The air inlet grille 13 and the air outlet tube 10 are provided with structures such as grooves and snap-fitting protrusions, and external threads or snap-fitting grooves are provided on the outer periphery of the end of the air outlet tube 10, so that the inner wall of the sleeve of the air inlet grille 13 and the outer wall of the air outlet tube 10 can be fixed by means of threaded cooperation or snap-fitting, and then the air inlet grille 13 and the air outlet tube 10 can be conveniently disassembled and assembled by means of threaded connection or snap-fitting, thereby further improving the assembly convenience and reliability of the air inlet grille 13 and the air outlet tube 10, facilitating the disassembly and assembly of the air inlet grille 13 and the air outlet tube 10, and facilitating the cleaning and maintenance of the air inlet grille 13 during daily use, thereby improving the practicality and reliability of the blowing device 100.

[0052] In addition, the air outlet grille 15 may be provided with an external thread or a snap-fit ​​groove or other structures on the outer circumference. In this case, an internal thread and a snap-fit ​​protrusion or other structures may be provided on the inner wall of the air outlet cylinder 10 near the air outlet, so that the outer circumference of the air outlet grille 15 and the inner wall of the air outlet cylinder 10 can be fixed by means of threaded fit or snap-fit ​​fit; or, the air outlet grille 15 may be provided with a sleeve, which may be set to the size of the end of the air outlet cylinder 10 provided with the air outlet, so that the sleeve can be sleeved on the end of the air outlet cylinder 10. In this case, an internal thread and a snap-fit ​​protrusion may be provided on the inner wall of the sleeve. 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 tube 10, so that the inner wall of the sleeve of the air outlet grille 15 and the outer wall of the air outlet tube 10 can be fixed by means of threaded cooperation or snap-in cooperation, and then the air outlet grille 15 and the air outlet tube 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 tube 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 blowing device 100.

[0053] See also Figure 2 , Figure 5 and Fig. 9In an embodiment of the present invention, the first fan blade 53 includes an inner hub 531, an outer hub 533, at least two first blades 535 and at least two second blades 537, the inner hub 531 is connected to the first shaft segment 511; the outer hub 533 is coaxially arranged with the inner hub 531 and is sleeved on the outer periphery of the inner hub 531, and an air inlet channel 5315 is formed between the outer hub 533 and the inner hub 531; at least two first blades 535 are connected to the outer periphery of the outer hub 533 at intervals; at least two second blades 537 are arranged at intervals in the air inlet channel 5315 and connect the outer hub 533 and the inner hub 531.

[0054] In this embodiment, by forming an air inlet channel 5315 between the coaxially arranged outer hub 533 and the inner hub 531, and surrounding a plurality of first blades 535 on the outer periphery of the outer hub 533, and surrounding a plurality of second blades 537 between 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 fan blade 53 can adopt a fan blade structure in the form of combined air outlet to achieve a better air outlet effect. 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 structural design, and then compared with the fan 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 volume of the first fan blade 53. At this time, by forming an air inlet channel 5315 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 axially along the first shaft section 511. 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 53 can rotate to generate a larger air volume, further increasing the air volume of the air intake of the blowing device 100, which is conducive to better reducing the operating power of the fan 51 and improving the practicality and reliability of the blowing 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 53 has a higher air pressure and flow, and the air outlet effect of the blowing 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 53 can blow out a more uniform airflow, better realize the large air volume intake effect of the blowing device 100, and further improve the structural stability and reliability of the blowing device 100.

[0055] Among them, the projection of the air inlet channel 5315 on the fixing member 30 can overlap with at least part of the arc-shaped guide surface 35, so that the mixed airflow formed by the disturbance of the first blade 535 and the second blade 537 of the first fan blade 53 can be better guided to the second blade 537 through the arc-shaped guide surface 35, which is conducive to better reducing the turbulence of the air inlet airflow of the blowing device 100, reducing the flow velocity attenuation and noise of the air inlet airflow, and further improving the practicality and reliability of the blowing device 100.

[0056] See also Figure 2 , Figure 5 and Fig. 9 In the embodiment of the present invention, 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 in 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 in the direction from the first air inlet to the air outlet.

[0057] In this 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, and the second blade 537 is used to connect the inner hub 531 and the second air focusing ring 5333, so that the air can enter the air inlet channel 5315 and then pass through the second air focusing ring 5333 and the inner hub 531 to be disturbed by the second blade 537. Due to the turbulent flow of the second blade 537 of the centrifugal blade, 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 blade 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 5315 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 53, and further improving the high-speed blowing effect of the blowing device 100.

[0058] See also Figure 2 , Figure 5 and Fig. 9In the embodiment of the present invention, the inner hub 531 includes a guide portion 5311 and a connecting portion 5313, the connecting portion 5313 is connected to the first shaft segment 511, and the guide portion 5311 is connected to one end of the connecting portion 5313 facing away from the first shaft segment 511. The outer periphery of the connecting portion 5313 is arranged opposite to the second air gathering ring 5333, the second blade 537 connects the connecting portion 5313 and the second air gathering ring 5333, and the width of the connecting portion 5313 is configured to gradually increase in the direction from the first air inlet to the air outlet.

[0059] In this embodiment, the guide portion 5311 can be set in a truncated cone structure, so that the air can better flow into the air inlet channel 5315 along the curved top surface of the guide portion 5311, which is conducive to better utilizing the guide portion 5311 to guide the incoming air flow, reducing the obstruction of the inner hub 531 to the incoming air flow, so that the air flow can have a higher flow rate, and better improve the blowing effect of the first fan blade 53. By gradually increasing the width of the connecting portion 5313 in the direction from the first air inlet to the air outlet, the outer periphery of the connecting portion 5313 can be inclined to the first axis segment 511. At this time, the outer periphery of the connecting portion 5313 can be almost parallel to the inner wall of the second air focusing ring 5333. After the intake air flow is guided by the guide portion 5311, the air flow entering the air inlet channel 5315 can further flow along the inclined outer periphery of the connecting portion 5313, so that the air flow in the air inlet channel 5315 can be better blown out obliquely, so that the air flow disturbed by the second blade 537 and the air flow disturbed by the first blade 535 can be mixed more quickly, thereby further improving the practicality and reliability of the blowing device 100. Among them, the outer periphery of the connecting part 5313 and the guide part 5311 can be set with an arc-shaped structure, so that the inner hub 531 can use the smooth outer walls of the guide part 5311 and the connecting part 5313 to achieve a better airflow guidance effect, which is conducive to better avoiding airflow turbulence or noise in the air inlet channel 5315, and further improving the structural stability and reliability of the blowing device 100.

[0060] See also Figure 3 and Figure 5 In an embodiment of the present invention, a guide slope 317 is formed on a side of the support guide vane 31 facing the first fan blade 53 .

[0061] In this embodiment, the support guide vane 31 can be set as a plate structure inclined to the rotation center axis of the fan 51, or the support guide vane 31 can be set as a triangular block or trapezoidal block structure with an inclined surface on the side facing the first air inlet, so that the support guide vane 31 can form an inclined guide slope 317 on the side facing the first air inlet. Under the action of the guide slope 317, the airflow disturbed by the first fan blade 53 can flow better to the second fan blade 55 under the guiding action of the guide slope 317, so as to better avoid air flow turbulence or noise in the accommodating cavity 11, thereby achieving a better blowing effect of the blowing device 100 and further improving the practicality and reliability of the blowing device 100.

[0062] See also Figure 3 and Figure 4 In an embodiment of the present invention, the support guide vane 31 includes a first support plate 311 and a second support plate 313. The projection of the first support plate 311 on the fixing member 30 is set at an angle with the rotation center axis of the fan assembly 50. The side of the first support plate 311 facing the first fan blade 53 is formed as a guide slope 317; the second support plate 313 is connected to one side of the first support plate 311 and is set at an angle with the first support plate 311. The first support plate 311 and the second support plate 313 are enclosed to form a weight reduction groove 315.

[0063] In this embodiment, the support guide vane 31 is formed by connecting the first support plate 311 and the second support plate 313, and the first support plate 311 and the second support plate 313 are set at an angle, and the first support plate 311 and the second support plate 313 set at an angle can be used to better increase the overall width of the support guide vane 31, so that the support guide vane 31 can use a certain structural thickness to better improve the supporting and connecting effect on the fixing member 30 and the air outlet 10; at the same time, the first support plate 311 and the second support plate 313 are used to form a weight reduction groove 315 on the side facing the air outlet, so that the overall structural strength of the support guide vane 31 can be better improved under the action of the second support plate 313, and the support guide vane 31 can achieve a lighter and thinner structural design, which is conducive to better reducing the weight and material cost of the blowing device 100, and further improving the structural stability and reliability of the blowing device 100. Among them, one end of the first support plate 311 and the second support plate 313 can be connected to the outer periphery of the fixing member 30, and the other end of the first support plate 311 and the second support plate 313 can be connected to the inner wall of the air outlet cylinder 10. The fixing member 30 and the inner wall of the air outlet cylinder 10 can be used to form two relative inner walls of the weight reduction groove 315, thereby ensuring the overall connection stability of the support guide vane 31 and the fixing member 30 and the air outlet cylinder 10, and effectively avoiding the support guide vane 31 from being broken due to excessive wind force during the operation of the blowing device 100, so that the blowing device 100 can achieve better high-speed blowing effect, further improving the practicality and reliability of the blowing device 100.

[0064] See also Figure 3 and Figure 4 In the embodiment of the present invention, the outer periphery of the fixing member 30 is provided with a first wire hole connected to the mounting groove 33, and the outer periphery of the air guide is provided with a second wire hole connected to the weight reduction groove 315. The fan 51 is provided with a connecting cable, which is passed through the first wire hole and the second wire hole and is partially accommodated in the weight reduction groove 315.

[0065] In this embodiment, by utilizing the first wiring hole 37 on the periphery of the fixing member 30 and the second wiring hole 17 on the periphery of the air outlet cylinder 10, the control cable or power supply cable of the fan 51 can be routed from the accommodating cavity 11 to the second wiring hole 17 through the first wiring hole 37 in the installation groove 33, and then passed through the second wiring hole 17 to be connected to the control system or energy storage system outside the air outlet cylinder 10, thereby achieving stable routing of the blowing device 100 and ensuring stable operation of the blowing device 100.

[0066] By arranging the weight-reducing groove 315 on the support guide vane 31, the first wiring hole 37 and the second wiring hole 17 can also be arranged at the position corresponding to the weight-reducing groove 315, so that part of the cables routed through the first wiring hole 37 in the accommodating cavity 11 to the second wiring hole 17 can be accommodated in the weight-reducing groove 315, so that the support guide vane 31 can not only be used for supporting and fixing the air outlet tube 10 and the fixing member 30, but also can be used for accommodating and storing the cables of the fan 51, which is beneficial to better avoid that the cables of the fan 51 are exposed in the accommodating cavity 11 and have a certain probability of being entangled with the first blade 53 and the second blade 55, so as to better ensure the stable and reliable operation of the blowing device 100, and is beneficial to better improve the aesthetics of the blowing device 100, and further improve the structural stability and reliability of the blowing device 100. Among them, a cable fixing buckle or strap can be set in the weight reducing groove 315, so that the cable of the fan 51 can be better fixed in the weight reducing groove 315, preventing the cable from loosening from the weight reducing groove 315, thereby further improving the structural stability and reliability of the blowing device 100.

[0067] See also Figures 3 to 5 In the embodiment of the present invention, the fan 51 is provided with a control circuit board 515 , and the control circuit board 515 is sleeved on the outer periphery of the fan 51 and is arranged in the installation groove 33 .

[0068] In this embodiment, the control circuit board 515 may be integrated with the drive module, function module, etc. of the fan 51. By sleeve-mounting the control circuit board 515 on the periphery of the fan 51 and accommodating the control circuit board 515 in the mounting groove 33, the fan 51 may be controlled and powered by connecting the control circuit board 515 using an integrated circuit, which is beneficial to better reduce the overall volume of the control module configured outside the blowing device 100, improve the overall structural stability of the fan 51, and facilitate the wiring of the fan 51. Among them, under the protective effect of the mounting groove 33, the control circuit board 515 can be effectively prevented from being affected by the airflow in the accommodating cavity 11, ensuring the stable operation of the blowing device 100, and further improving the overall structural stability and reliability of the blowing device 100.

[0069] 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. A blowing device, characterized in that: include: An air outlet cylinder, wherein a receiving cavity is formed in the air outlet cylinder, and a first air inlet and an air outlet communicating with the receiving cavity are respectively provided at two ends of the air outlet cylinder; A fixing member, the fixing member is arranged in the accommodating cavity, and a supporting guide vane connected to the inner wall of the air outlet cylinder is arranged on the outer periphery of the fixing member; and A fan assembly, the fan assembly is arranged in the accommodating cavity, the fan assembly comprises a fan, a first fan blade and a second fan blade, the first fan blade is arranged between the fixing member and the first air inlet, the second fan blade is arranged between the fixing member and the air outlet, the fan is connected to the fixing member, and is in driving connection with the first fan blade and the second fan blade; Among them, the air outlet duct is also provided with a flow cavity and a flow port connecting the flow cavity and the accommodating cavity, the flow port is arranged on the side of the second fan blade facing away from the air outlet, and the surrounding side of the air outlet duct is provided with a second air inlet connecting the flow cavity.

2. The blowing device according to claim 1, characterized in that: The rotation radius of the first blade is defined as R1, the rotation radius of the second blade is defined as R2, and the distance between the end of the support guide vane facing away from the fixing member and the rotation center axis of the fan is defined as R3, wherein R1<R3, R2>R3; And / or, defining the area of ​​the accommodating cavity between the first air inlet and the fixing member as a first air cavity, wherein the cross-sectional width of the first air cavity is configured to gradually decrease along the air outlet direction; And / or, the air outlet is provided with a plurality of supporting ribs at the flow outlet.

3. The blowing device according to claim 1, characterized in that: A mounting groove is provided on one side of the fixing member facing the air outlet, and a avoidance hole communicating with the mounting groove is provided on one side of the fixing member facing the first air inlet; At least part of the structure of the fan is installed and fixed in the installation groove, and a first shaft section and a second shaft section are respectively provided at two ends of the fan, the first shaft section passes through the avoidance hole to connect to the first fan blade, and the second shaft section is connected to the second fan blade.

4. The blowing device according to claim 3, characterized in that: The fixing member is provided with an arc-shaped guide surface on one side facing the first air inlet, and the avoidance hole is provided on the arc-shaped guide surface; And / or, the fan is provided with a control circuit board, and the control circuit board is sleeved on the outer periphery of the fan and arranged in the installation groove.

5. The blowing device according to claim 1, characterized in that: The air outlet cylinder is also provided with an air inlet grille and an air outlet grille. The air inlet grille is connected to one end of the air outlet cylinder and covers the first air inlet. The air outlet grille is connected to the other end of the air outlet cylinder and covers the air outlet.

6. The blowing device according to claim 5, characterized in that: The air inlet grille is detachably connected to the air outlet cylinder; And / or, the air outlet grille is detachably connected to the air outlet cylinder; And / or, the air inlet grille is sleeved on one end of the air outlet tube, the outer periphery of the air inlet grille and the outer periphery of the air outlet tube are spaced apart to form the flow cavity, and the second air inlet is formed on the peripheral side of the air inlet fan blades.

7. The blowing device according to any one of claims 1 to 6, characterized in that: The first fan blade comprises: An inner hub, the inner hub being drivingly connected to the fan; 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; at least two first blades, the at least two first blades being connected to the outer circumference of the outer hub at intervals; and At least two second blades are arranged at intervals in the air inlet flow channel and connect the outer hub and the inner hub.

8. The blowing device according to claim 7, 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 along the direction from the first air inlet toward the air outlet.

9. The blowing device according to any one of claims 1 to 6, characterized in that: A flow guide slope is formed on one side of the support guide vane facing the first fan blade.

10. The blowing device according to claim 9, characterized in that The support guide vane comprises: A first support plate, wherein a projection of the first support plate on the fixing member is arranged at an angle to the central axis of rotation of the fan assembly, and a side of the first support plate facing the first fan blade 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. The first support plate and the second support plate are combined to form a weight-reducing groove.

11. The blowing device according to claim 10, characterized in that: The outer periphery of the fixing member is provided with a first wire hole connected to the mounting groove, and the outer periphery of the air guide cylinder is provided with a second wire hole connected to the weight reduction groove; The fan is provided with a connecting cable, the connecting cable is passed through the first wire passing hole and the second wire passing hole, and is partially accommodated in the weight reduction groove.

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