Hyperbolic pressurizing smoke exhaust axial flow fan

Abstract

The hyperbolic pressurizing smoke exhaust axial flow fan comprises a shell, a fan body, a motor and an installation frame, the side face of the shell is in a concave arc hyperbolic shape, the motor is installed in the shell, a main shaft of the motor is connected with the fan body, the fan body comprises a plurality of fan blades, and the fan blades are connected with the installation frame. The far ends of the fan blades are gradually changed in an arc curve mode and attached to the inner wall of the shell. According to the hyperbolic pressurizing smoke exhaust axial flow fan, the design that the concave arc hyperbolic shell and the far-end arc gradually-changing fan blades attached to the inner wall are adopted, airflow is effectively guided, vortex and flow losses are reduced, higher air pressure and air volume output are achieved, the structure is particularly suitable for the smoke exhaust working condition, the smoke exhaust capacity can be effectively enhanced, and the system response speed is increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of axial flow fans, more particularly to a hyperbolic pressure-increasing smoke exhaust axial flow fan. BACKGROUND

[0002] As a key equipment widely used in building ventilation, industrial exhaust and fire smoke exhaust, etc., the performance of the axial flow fan directly affects the operation efficiency and safety of the system. The traditional axial flow fan usually adopts a cylindrical or conical shell structure, and the blade design is usually an equal cross-section or a simple arc shape, which can meet the basic ventilation requirements to a certain extent, but has obvious deficiencies under high pressure, high flow or special working conditions (such as smoke exhaust).

[0003] In the prior art, the ordinary axial flow fan often has the following problems: 1) low air flow organization efficiency, easy to produce vortex and air flow separation, resulting in large wind pressure loss and high energy consumption; 2) insufficient structural rigidity of the fan, which is prone to fatigue damage due to vibration during long-term operation, affecting the service life; 3) large gap between the blade and the shell, causing air leakage and reducing the actual air volume and wind pressure output; 4) single installation method, poor adaptability, especially in space-limited or hoisting occasions; 5) large operating noise, which is difficult to meet the requirements of modern buildings for environmental comfort.

[0004] Although some improved fans have improved performance by increasing the number of blades, optimizing the blade angle or strengthening the structural support, they still cannot fundamentally solve the balance problem between air flow efficiency and structural stability. Especially in the smoke exhaust condition, the fan needs to have higher wind pressure and rapid response capability, and the traditional design cannot meet the requirements.

[0005] Therefore, there is an urgent need for a new type of axial flow fan that can achieve comprehensive optimization in aerodynamic performance, structural strength, installation convenience and operating noise to adapt to higher requirement ventilation and smoke exhaust application scenarios. SUMMARY

[0006] In view of the deficiencies of the prior art, the present application provides a hyperbolic pressure-increasing smoke exhaust axial flow fan, which adopts a concave arc-shaped hyperbolic shell and a wind blade with an arc-shaped gradual change at the distal end and a fitted inner wall, effectively guiding the air flow, reducing vortex and flow loss, and achieving higher wind pressure and air volume output. This structure is particularly suitable for smoke exhaust conditions and can effectively enhance the smoke exhaust capacity and improve the system response speed.

[0007] To achieve the above-mentioned purposes, the present application provides the following technical solutions: A hyperbolic curve booster smoke exhaust axial flow fan, comprising a shell, a fan, a motor and a mounting frame, the side of the shell is in a concave arc hyperbolic curve shape, the motor is installed in the shell, and the main shaft of the motor is connected with the fan, the fan comprises a plurality of fan blades, the distal end of the fan blade is in an arc curve and gradually changes and is attached to the inner wall of the shell.

[0008] Further, a plurality of support plates are arranged in the shell, and the support plates are respectively connected with the inner wall of the shell and the motor.

[0009] Further, the fan blade is provided with six.

[0010] Further, the mounting frame comprises two groups of L-shaped support plates, and the two groups of L-shaped support plates are arranged at the bottom of the side of the shell and are in mirror image distribution.

[0011] Further, the top of the side of the shell is provided with an eye.

[0012] Compared with the prior art, the beneficial effects of the present application are: 1. High-efficiency aerodynamic performance and booster effect: the concave arc hyperbolic curve shell and the fan blade with the distal end arc gradually changing and being attached to the inner wall are designed to effectively guide the airflow, reduce the vortex and flow loss, and realize higher wind pressure and wind volume output. This structure is particularly suitable for smoke exhaust conditions, can effectively enhance the smoke exhaust capacity, and improve the system response speed.

[0013] 2. Improvement of structural strength and operation stability: by arranging the support plates in the shell to connect the motor and the inner wall of the shell, the overall structural rigidity is significantly enhanced, the vibration and load during the operation of the motor are dispersed, the structural fatigue caused by long-term operation is avoided, and the service life of the fan is prolonged.

[0014] 3. Optimization of fan blade configuration: the design of six fan blades balances between aerodynamic efficiency and structural rationality, which not only ensures sufficient wind pressure output, but also avoids the increase of resistance or noise caused by too many blades, and realizes high-efficiency and low-noise operation.

[0015] 4. Installation convenience and adaptability: the mirror image distribution of the L-shaped support plates constitutes the mounting frame, provides stable bottom support, and adapts to various installation environments; the top eye design is convenient for hoisting, especially suitable for high-altitude, narrow or temporary installation occasions, and greatly improves the construction efficiency.

[0016] 5. Energy saving, environmental protection and low noise operation: the overall aerodynamic optimization design not only improves the efficiency, but also reduces the energy consumption and operation noise, meets the environmental protection and comfort requirements of modern buildings on ventilation equipment, and is suitable for many fields such as civil, industrial and fire fighting.

[0017] 6. Low maintenance cost and high reliability: the structural design is reasonable, the layout of parts is clear, the daily inspection and maintenance are convenient, the downtime is reduced, and the smoke exhaust system which needs long-term stable operation is suitable.

[0018] The application has obvious advantages in technical performance, and embodies good reliability, economy and adaptability in practical application, and has wide market application prospect and technical popularization value. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings. Figure 1 Structure diagram of a hyperbolic pressure-increasing smoke exhaust axial flow fan Figure 1 ; Figure 2 Structure diagram of a hyperbolic pressure-increasing smoke exhaust axial flow fan Figure 2 .

[0020] In the drawings, 1 is a shell, 2 is a motor, 3 is a fan, 301 is a fan blade, 4 is a mounting frame, 5 is a support plate, and 6 is a lifting lug. DETAILED DESCRIPTION

[0021] In the description of the present application, it should be noted that, for the orientation words, such as the terms "center", "transverse (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and cannot be understood as indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific protection scope of the present application.

[0022] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the "first" and "second" features can explicitly or implicitly include one or more features, and the meaning of "several" and "several" in the description of the present application is two or more than two, unless otherwise specifically limited.

[0023] A hyperbolic pressure-increasing smoke exhaust axial flow fan, such as Figures 1-2As shown, including the shell 1, fan 3, motor 2 and mounting bracket 4, the side of the shell 1 is concave arc hyperbolic shape, the motor 2 is installed in the shell 1, and the main shaft of the motor 2 is connected with the fan 3, the fan 3 includes a plurality of wind blades 301, the distal end of the wind blade 301 is arc curve gradually and fits the inner wall of the shell 1.

[0024] Specifically, by adopting the hyperbolic surface design of the shell 1, the fluid dynamics principle is met, the airflow flow resistance can be reduced, the airflow concentration and directivity can be improved, the booster effect of the fan can be enhanced, the smoke exhaust efficiency can be improved, the energy consumption and noise can be reduced, and the distal end of the wind blade 301 is arc gradually and fits the inner wall of the shell 1, so that the gap between the distal end of the wind blade 301 and the shell 1 is extremely small, forming an approximately sealed structure, reducing airflow leakage, improving wind pressure and wind volume output efficiency, and enhancing overall performance stability.

[0025] Preferably, a plurality of support plates 5 are arranged in the shell 1, and the support plates 5 are respectively connected with the inner wall of the shell 1 and the motor 2. Specifically, the support plate 5 enhances the structural rigidity and stability, disperses the vibration and load of the motor 2 during operation, prolongs the service life of the motor 2 and the fan, reduces the maintenance frequency, and improves the operation safety.

[0026] Preferably, the wind blade 301 is provided with six blades, and the six blades balance between aerodynamic performance and structural strength, avoiding excessive blades leading to increased resistance or insufficient wind pressure, optimizing the wind volume output and energy consumption ratio, and improving the overall working efficiency.

[0027] Preferably, the mounting bracket 4 includes two groups of L-shaped support plates 5, and the two groups of L-shaped support plates 5 are arranged at the bottom of the side of the shell 1 and are mirror image distributed, which enhances the mounting stability, is suitable for various installation environments, makes the installation simple, has strong adaptability, supports firmly, and reduces shaking during operation.

[0028] Preferably, the side top of the shell 1 is provided with an ear 6, so that the axial flow fan is hoisted through the ear 6.

[0029] Advantages: 1. High-efficiency aerodynamic performance and booster effect: the concave arc hyperbolic shell 1 and the wind blade 301 with distal end arc gradually and fitting the inner wall design effectively guide the airflow, reduce vortex and flow loss, and realize higher wind pressure and wind volume output. This structure is particularly suitable for smoke exhaust conditions, which can effectively enhance the smoke exhaust capacity and improve the system response speed.

[0030] 2. Structural strength and operation stability improvement: by arranging the support plate 5 in the shell 1 to connect the motor 2 and the inner wall of the shell 1, the overall structural rigidity is significantly enhanced, the vibration and load of the motor 2 during operation are dispersed, the structural fatigue caused by long-term operation is avoided, and the service life of the fan is prolonged.

[0031] 3. Optimal configuration of the fan blades 301: The design of the six fan blades 301 balances between aerodynamic efficiency and structural rationality, ensuring sufficient wind pressure output while avoiding increased resistance or noise due to excessive blades, achieving efficient and low-noise operation.

[0032] 4. Convenience and adaptability of installation: The mirror image L-shaped support plates 5 form the mounting frame 4, providing stable bottom support and adapting to various installation environments; the top lifting lugs 6 are designed for easy lifting, especially suitable for high-altitude, narrow, or temporary installation occasions, significantly improving construction efficiency.

[0033] 5. Energy saving, environmental protection, and low-noise operation: The overall aerodynamic optimization design not only improves efficiency but also reduces energy consumption and operating noise, meeting the environmental protection and comfort requirements of modern buildings for ventilation equipment and being suitable for multiple fields such as civil, industrial, and fire protection.

[0034] 6. Low maintenance cost and high reliability: The structural design is reasonable, and the component layout is clear, facilitating daily inspection and maintenance, reducing downtime, and being suitable for long-term stable operation of the smoke exhaust system.

[0035] The present application not only has obvious advantages in technical performance but also demonstrates good reliability, economy, and adaptability in practical applications, with wide market application prospects and technical promotion value.

[0036] The above is only the preferred embodiment of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solution falling within the scope of the present application should be considered within the protection scope of the present application. It should be noted that for ordinary technical personnel in the technical field, some improvements and refinements without departing from the principles of the present application should also be considered within the protection scope of the present application.

Claims

1. A hyperbolic plenum booster exhaust axial fan characterized by: The utility model relates to a fan, including casing, fan, motor and mounting frame, the side of casing is concave arc shape hyperbolic curve, the motor is installed in casing, and the main shaft of motor is connected with fan, the fan includes a plurality of wind blades, and the distal end of wind blade is arc curve and gradually changes and sticks to the inner wall of casing.

2. The hyperbolic plenum exhaust axial fan of claim 1, wherein: The casing is provided with a plurality of support plates, and the support plates are connected to the inner wall of the casing and the motor, respectively.

3. The hyperbolic plenum booster range hood axial fan of claim 1, wherein: The wind blade is provided with six.

4. The hyperbolic plenum booster range hood axial fan of claim 1, wherein: The mounting frame includes two groups of L-shaped support plates, which are arranged at the bottom of the side of the casing and are mirror images.

5. The hyperbolic plenum booster range hood axial fan of claim 1, wherein: The side of the casing is provided with an ear at the top.

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