Axial-flow ventilator with optimized structure

Abstract

The utility model belongs to the technical field of axial-flow type ventilators, and particularly relates to an axial-flow type ventilator with an optimized structure, which comprises a frame, a driving device is arranged in the frame, the driving device comprises a hub and blades, and the hub rotates to drive the blades to rotate. The flange plate and the frame are fixedly installed through bolts and are convenient to disassemble while being fixed, the machine shell and the dustproof net are fixedly installed through bolts and are convenient to disassemble while being fixed, the inner wall of the machine shell and the sound insulation cotton are fixedly bonded, so that the stability of the whole structure is ensured, and the sound insulation effect is enhanced; and the sound insulation cotton and the heat insulation layer are fixedly installed, heat can be effectively blocked through the design of the heat insulation layer, air can enter the air inlet conveniently, and therefore the effect that air enters the ventilator from the radial direction and exits air from the axial direction is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of axial flow fans, in particular to an axial flow fan with an optimized structure. Background Art

[0002] Axial-flow fans are widely used in industrial and residential applications. They create an axial flow through a rotating impeller. An electric motor drives the impeller, and the lift generated by the blades draws air in from one end of the fan and pushes it outwards. They are primarily used for ventilation, exhaust, and cooling.

[0003] The Chinese patent with authorization publication number CN210265263U discloses a fan impeller of an axial flow fan and an axial flow fan, wherein the fan impeller has a plurality of fan impeller blades arranged in a blade ring around a rotating axis, wherein at least one of the fan impeller blades has an inner section located radially inward and a blade edge section directly connected to the inner section and adjacent to the blade edge, wherein at least one fan impeller blade has a local protrusion through the radial extension of the blade edge section, the protrusion is formed in an extension of the chord length of the fan impeller blade and locally enlarges the fan impeller blade in the blade edge section, and wherein the average angle of attack of the fan impeller blade relative to the rotation plane of the fan impeller is greater than the average angle of attack of the protrusion relative to the rotation plane, such a fan impeller ensures that the sound level generated during operation is reduced under disturbed installation conditions.

[0004] However, when the above solution uses an axial flow fan, the blades may generate unnecessary vibrations in the airflow, affecting the stability and efficiency of the airflow, thereby reducing the performance of the fan. In addition, the noise generated when the fan is running may be relatively large, affecting the comfort of the use environment, especially in places where quietness is required (such as offices, hospitals, etc.). Therefore, an axial flow fan with an optimized structure is proposed to solve the above problems. Utility Model Content

[0005] In order to solve the technical problems that when using an axial flow fan, the blades may generate unnecessary vibrations in the airflow, affecting the stability and efficiency of the airflow, and the noise generated when the fan is running may be large, affecting the comfort of the use environment, the present application provides an axial flow fan with an optimized structure.

[0006] The utility model provides an axial flow fan with an optimized structure, which comprises a frame. A driving device is arranged inside the frame. The driving device comprises a hub and blades. The rotation of the hub drives the blades to rotate.

[0007] A sound insulation device is provided inside the frame, and the sound insulation device includes sound insulation cotton, which absorbs the noise generated by the ventilator.

[0008] Preferably, the driving device further comprises a motor, the motor is fixedly mounted on the inner wall of the groove of the frame, and the output shaft of the motor is fixedly mounted on one end of the wheel hub.

[0009] Through the above technical solution, the motor is fixedly mounted on the frame, and the output shaft of the motor is fixedly mounted on the hub, which is driven to rotate, thereby driving the blades fixedly mounted thereto to rotate.

[0010] Preferably, the outer surface of the hub is rotatably connected to a housing, an air outlet is provided on the outer surface of the housing, and wings are fixedly mounted on the inner wall of the housing.

[0011] Through the above technical solution, the hub is rotatably connected to the casing, which fixes it without affecting its rotation. An air outlet is provided on the outer surface of the casing, and the air outlet is located on the right side of the casing, so as to achieve the effect of the fan taking in air radially and discharging air axially. The casing and the wing are fixedly installed and fixed, and the wing corresponds to the blade one by one. The design of the wing can improve the boundary layer separation phenomenon on the pressure surface of the blade, further reduce the generation of vortex, thereby reducing noise and improving work efficiency.

[0012] Preferably, a reinforcement sheet is fixedly mounted on the outer surface of the hub, the outer surface of the hub is fixedly mounted to the outer surface of the blade, and the outer surface of the blade is fixedly mounted to the outer surface of the reinforcement sheet.

[0013] Through the above technical solution, the hub is fixed to the blades and the reinforcement sheet, and the two are fixed while driving them to rotate synchronously. The leading edge and the trailing edge of the blade are both wavy, which can effectively reduce the turbulence generated by the airflow and reduce the noise level. The reinforcement sheet is rectangular, and the first side and the second side are respectively connected to the outer circumference of the hub, the third side is located on the outer circumference of the hub, and the fourth side is connected to the corresponding position of the blade, which can enhance the connection strength between the blade and the hub and reduce the noise and wear caused by vibration.

[0014] Preferably, the sound insulation device further comprises a flange, which is fixedly mounted on the outer surface of the casing, and the outer surface of the flange is fixedly mounted to the inner wall of the frame by bolts.

[0015] Through the above technical solution, the flange is fixed to the casing and fixed, and the flange is fixed to the frame by bolts, which makes it easy to disassemble while fixing it.

[0016] Preferably, a dustproof net is fixedly installed on the outer surface of the casing by bolts, and the inner wall of the casing is fixedly bonded to the outer surface of the sound insulation cotton.

[0017] Through the above technical solution, the casing and the dustproof net are fixed and installed by bolts, which makes it easy to disassemble while fixing them. At the same time, the dustproof net can prevent dust from entering and keep the inside of the equipment clean. The fixed bonding between the inner wall of the casing and the sound insulation cotton ensures the stability of the overall structure, enhances the sound insulation effect, and reduces vibration noise.

[0018] Preferably, a heat insulation layer is fixedly bonded to the outer surface of the sound insulation cotton, and an air inlet is opened on the outer surface of the frame.

[0019] Through the above technical solution, the sound insulation cotton and the heat insulation layer are fixedly installed and fixed. The design of the heat insulation layer can effectively block heat, and the air inlet facilitates the entry of air, so as to achieve the effect of the ventilator taking in air radially and exhausting air axially.

[0020] The beneficial effects of the present invention are:

[0021] 1. A driving device is provided to drive the blades to rotate. The motor drives the hub to rotate so as to drive the blades fixed thereto to rotate. An air outlet is provided on the outer surface of the casing and the air outlet is located on the right side of the casing so as to achieve the effect of the fan taking in air radially and discharging air axially. The winglets correspond to the blades one by one, which can improve the boundary layer separation phenomenon on the pressure surface of the blades. The hub is fixed to the blades and the reinforcement sheet. While fixing the two, they are driven to rotate synchronously. The leading and trailing edges of the blades are wavy, which can effectively reduce the turbulence generated by the airflow. The reinforcement sheet can enhance the connection strength between the blades and the hub, and also reduce the noise and wear caused by vibration, solving the technical problem that when using an axial flow fan, the blades may generate unnecessary vibrations in the airflow, affecting the stability and efficiency of the airflow, thereby reducing the performance of the fan.

[0022] 2. By setting up a sound insulation device, the noise generated by the fan is absorbed. The flange and the frame are fixed and installed with bolts, which are easy to disassemble while being fixed. The casing and the dust screen are fixed and installed with bolts, which are easy to disassemble while being fixed. The fixed bonding between the inner wall of the casing and the sound insulation cotton ensures the stability of the overall structure, enhances the sound insulation effect, and reduces vibration noise. The sound insulation cotton is fixed to the insulation layer. The design of the insulation layer can effectively block heat. The air inlet is convenient for air to enter, so that the fan can take in air radially and discharge air axially. It solves the technical problem that when using an axial flow fan, the noise generated by the fan during operation may be large, affecting the comfort of the use environment, especially in occasions that require quietness. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of an axial flow fan with an optimized structure proposed by the present invention;

[0024] Figure 2 A three-dimensional diagram of a hole plug structure of an axial flow fan with an optimized structure proposed by the present invention;

[0025] Figure 3 A three-dimensional diagram of the ventilation hole structure of an axial flow fan with an optimized structure proposed by the present invention;

[0026] Figure 4 This is a three-dimensional diagram of the injection hole structure of an axial flow fan with an optimized structure proposed by the present invention.

[0027] In the figure: 1. Frame; 2. Motor; 21. Hub; 3. Casing; 31. Air outlet; 32. Wing; 4. Reinforcement plate; 41. Blade; 5. Flange; 6. Dustproof net; 61. Sound insulation cotton; 7. Thermal insulation layer; 71. Air inlet. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] Reference Figures 1-4 An axial flow fan with an optimized structure includes a frame 1. A driving device is provided inside the frame 1. The driving device includes a hub 21 and blades 41. The rotation of the hub 21 drives the blades 41 to rotate.

[0030] In order to drive the blades 41 to rotate, the driving device also includes a motor 2, which is fixedly mounted on the inner wall of the groove of the frame 1. The output shaft of the motor 2 is fixedly mounted on one end of the hub 21. The motor 2 is fixedly mounted on the frame 1 and fixed to it. The output shaft of the motor 2 is fixedly mounted on the hub 21 and drives it to rotate so as to drive the blades 41 fixedly mounted thereto to rotate.

[0031] In order to reduce the generation of eddy currents, the outer surface of the hub 21 is rotatably connected to the casing 3, and an air outlet 31 is provided on the outer surface of the casing 3. The inner wall of the casing 3 is fixedly installed with a vane 32, which is rotatably connected to the casing 3 through the hub 21, and is fixed without affecting its rotation. The outer surface of the casing 3 is provided with an air outlet 31, and the air outlet 31 is located on the right side of the casing 3, so as to achieve the effect of the fan taking in air radially and discharging air axially. The casing 3 is fixedly installed with the vane 32, and the vane 32 corresponds to the blade 41 one by one. The design of the vane 32 can improve the boundary layer separation phenomenon on the pressure surface of the blade 41, further reduce the generation of eddy currents, thereby reducing noise and improving work efficiency.

[0032] In order to enhance the connection strength between the blade 41 and the hub 21, a reinforcing sheet 4 is fixedly installed on the outer surface of the hub 21. The outer surface of the hub 21 is fixedly installed to the outer surface of the blade 41, and the outer surface of the blade 41 is fixedly installed to the outer surface of the reinforcing sheet 4. The hub 21 is fixed to the blade 41 and the reinforcing sheet 4, and the two are fixed while driving the two to rotate synchronously. The leading edge and the trailing edge of the blade 41 are both wavy, which can effectively reduce the turbulence generated by the airflow and reduce the noise level. The reinforcing sheet 4 is rectangular, and the first side and the second side are respectively connected to the outer circumferential surface of the hub 21, the third side is located on the outer circumferential surface of the hub 21, and the fourth side is connected to the corresponding position of the blade 41, which can enhance the connection strength between the blade 41 and the hub 21 and reduce the noise and wear caused by vibration.

[0033] By setting a driving device, the blades 41 are driven to rotate, and the motor 2 drives the hub 21 to rotate, so as to drive the blades 41 fixed thereto to rotate. An air outlet 31 is provided on the outer surface of the casing 3, and the air outlet 31 is located on the right side of the casing 3, so as to achieve the effect that the fan takes in air radially and discharges air axially. The winglets 32 correspond to the blades 41 one by one, which can improve the boundary layer separation phenomenon on the pressure surface of the blades 41. The hub 21 is fixedly installed with the blades 41 and the reinforcement sheet 4. While fixing the two, the two are driven to rotate synchronously. The leading edge and the trailing edge of the blade 41 are both wavy, which can effectively reduce the turbulence generated by the airflow. The reinforcement sheet 4 can enhance the connection strength between the blade 41 and the hub 21, and also reduce the noise and wear caused by vibration, thereby solving the technical problem that when using an axial flow fan, the blade 41 may generate unnecessary vibration in the airflow, affecting the stability and efficiency of the airflow, thereby reducing the performance of the fan.

[0034] In order to absorb the noise generated by the ventilator, a sound insulation device is provided inside the frame 1. The sound insulation device includes sound insulation cotton 61. The sound insulation cotton 61 absorbs the noise generated by the ventilator.

[0035] In order to fix the flange 5 and facilitate disassembly, the sound insulation device also includes a flange 5, which is fixedly installed on the outer surface of the casing 3. The outer surface of the flange 5 is fixedly installed to the inner wall of the frame 1 by bolts. The flange 5 is fixed to the casing 3 to fix it, and the flange 5 is fixed to the frame 1 by bolts, which makes it easy to disassemble while fixing it.

[0036] In order to enhance the sound insulation effect, a dustproof net 6 is fixedly installed on the outer surface of the casing 3 by bolts, and the inner wall of the casing 3 is fixedly bonded to the outer surface of the sound insulation cotton 61. The casing 3 and the dustproof net 6 are fixedly installed by bolts, which makes it easy to disassemble while fixing them. At the same time, the dustproof net 6 can prevent dust from entering and keep the inside of the equipment clean. The fixed bonding of the inner wall of the casing 3 and the sound insulation cotton 61 ensures the stability of the overall structure, enhances the sound insulation effect, and reduces vibration noise.

[0037] In order to effectively block heat, the outer surface of the sound insulation cotton 61 is fixedly bonded with an insulation layer 7, and the outer surface of the frame 1 is provided with an air inlet 71. The sound insulation cotton 61 is fixedly installed and fixed to the insulation layer 7. The design of the insulation layer 7 can effectively block heat, and the air inlet 71 facilitates the entry of air, so as to achieve the effect of the fan taking in air radially and discharging air axially.

[0038] By setting up a sound insulation device, the noise generated by the fan is absorbed, the flange 5 and the frame 1 are fixed with bolts, which are easy to disassemble while being fixed, the casing 3 and the dust net 6 are fixed with bolts, which are easy to disassemble while being fixed, and the fixed bonding between the inner wall of the casing 3 and the sound insulation cotton 61 ensures the stability of the overall structure, enhances the sound insulation effect, and reduces vibration noise, the sound insulation cotton 61 is fixed with the thermal insulation layer 7, and the design of the thermal insulation layer 7 can effectively block heat, and the air inlet 71 facilitates the entry of air, so as to realize the effect that the fan takes in air radially and discharges air axially, which solves the technical problem that when using an axial flow fan, the noise generated when the fan is running may be large, affecting the comfort of the use environment, especially in places where quietness is required, such as offices and hospitals.

[0039] Working principle: When the ventilator needs to be used, start the motor 2, and the motor 2 drives the hub 21 fixed to it and rotatably connected to the casing 3 to rotate, and synchronously drives the blades 41 and the reinforcement sheet 4 fixed to the hub 21 to rotate. The leading and trailing edges of the blades 41 are both wavy, which can effectively reduce the turbulence generated by the airflow. The reinforcement sheet 4 can enhance the connection strength between the blades 41 and the hub 21. At the same time, the winglets 32 fixed to the casing 3 correspond one-to-one with the blades 41, which can improve the boundary layer separation phenomenon on the pressure surface of the blades 41. An air inlet 71 is provided on the frame 1, and an air outlet 31 is provided on the right side of the casing 3, which can achieve the effect of the ventilator taking in air radially and discharging air axially. The sound insulation cotton 61 and the heat insulation layer 7 fixedly bonded to the inner wall of the casing 3 effectively reduce noise while blocking heat, and the dustproof net 6 fixed to the casing 3 by bolts prevents dust from entering. At the same time, the flange 5 fixed on the casing 3 is fixed to the frame 1 by bolts, which is convenient to connect and easy to disassemble.

[0040] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An axial flow fan with an optimized structure, comprising a frame (1), characterized in that: A driving device is provided inside the frame (1), the driving device comprising a hub (21) and blades (41), and the rotation of the hub (21) drives the blades (41) to rotate; A sound insulation device is provided inside the frame (1), and the sound insulation device comprises sound insulation cotton (61), and the sound insulation cotton (61) absorbs the noise generated by the ventilator.

2. The axial flow fan with optimized structure according to claim 1, characterized in that: The driving device further comprises a motor (2), wherein the motor (2) is fixedly mounted on the inner wall of the groove of the frame (1), and an output shaft of the motor (2) is fixedly mounted on one end of the wheel hub (21).

3. The axial flow fan with optimized structure according to claim 2, characterized in that: The outer surface of the wheel hub (21) is rotatably connected to the housing (3), an air outlet (31) is provided on the outer surface of the housing (3), and a wing (32) is fixedly mounted on the inner wall of the housing (3).

4. The axial flow fan with optimized structure according to claim 3, characterized in that: A reinforcing sheet (4) is fixedly mounted on the outer surface of the hub (21), the outer surface of the hub (21) is fixedly mounted to the outer surface of the blade (41), and the outer surface of the blade (41) is fixedly mounted to the outer surface of the reinforcing sheet (4).

5. The axial flow fan with optimized structure according to claim 4, characterized in that: The sound insulation device further comprises a flange (5), wherein the flange (5) is fixedly mounted on the outer surface of the housing (3), and the outer surface of the flange (5) is fixedly mounted to the inner wall of the frame (1) via bolts.

6. The axial flow fan with optimized structure according to claim 5, characterized in that: A dust screen (6) is fixedly mounted on the outer surface of the housing (3) by means of bolts, and the inner wall of the housing (3) is fixedly bonded to the outer surface of the sound insulation cotton (61).

7. The axial flow fan with optimized structure according to claim 6, characterized in that: The outer surface of the sound insulation cotton (61) is fixedly bonded with a heat insulation layer (7), and the outer surface of the frame (1) is provided with an air inlet (71).

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