Efficient energy-saving axial flow fan

Abstract

The invention provides an efficient energy-saving axial flow fan which comprises a cylindrical shell and a support fixedly connected to the bottom end of the cylindrical shell through bolts, the inner wall of the cylindrical shell is connected with a silencing mechanism, the interior of the cylindrical shell is connected with a motor, and the two ends of the motor are connected with fan blades; the silencing mechanism comprises two silencing sleeves connected to the interior of the cylindrical shell, and the ends, away from each other, of the two silencing sleeves are connected with an air guide ring; the silencing sleeve comprises an annular silencing plate connected with the inner wall of the cylindrical shell and a silencing foam cotton plate arranged between the annular silencing plate and the cylindrical shell. The ventilation efficiency is improved while noise is reduced, and the defect that wind resistance may be increased by single noise reduction or noise may be intensified by single air guide is overcome.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of X, in particular to a high-efficiency energy-saving axial flow fan. BACKGROUND

[0002] The axial flow fan is a kind of ventilation equipment relying on the rotation of impeller to push the gas to flow along the axial direction, which is widely used in the ventilation of industrial plants, warehouses, office buildings, laboratories and other places. With the continuous deepening of the concept of energy saving and environmental protection, higher requirements are put forward for the performance of the axial flow fan. It not only needs to have good ventilation efficiency, but also needs to reduce the noise pollution in the running process, and at the same time realizes energy saving operation.

[0003] At present, the noise reduction effect of part of the axial flow fan is poor, and the noise generated during operation is large, which affects the surrounding environment and the work and life of the personnel; the air guide effect is not ideal, which reduces the ventilation efficiency. SUMMARY

[0004] The present application mainly provides a high-efficiency energy-saving axial flow fan to solve the technical problems in the background art.

[0005] The technical scheme adopted by the present application to solve the above technical problems is:

[0006] A kind of high-efficiency energy-saving axial flow fan, including cylindrical shell, and support fixedly connected to the bottom end of cylindrical shell by bolt, the inner wall of cylindrical shell is connected with silencing mechanism, the inside of cylindrical shell is connected with motor, the both ends of motor are connected with fan blade;

[0007] The silencing mechanism includes a silencing sleeve connected to the inside of the cylindrical shell, the silencing sleeve is provided with two, the ends of the two silencing sleeves away from each other are connected with a wind guide ring;

[0008] The silencing sleeve includes an annular silencing plate connected to the inner wall of the cylindrical shell, and a silencing foam board arranged between the annular silencing plate and the cylindrical shell.

[0009] Further, the outside of the motor is connected with a plurality of connecting frames, the connecting frames are arranged around the motor, and the connecting frames are arranged between the two silencing sleeves.

[0010] Further, the wind guide ring includes a ring body connected to one end of the silencing sleeve, and a plurality of wind guide blades are connected inside the ring body.

[0011] Further, the ring body is formed by a plate body bent into a ring shape, the plate body of the ring body is connected with lugs extending inward of the ring at both ends, and the two lugs are connected by a connecting piece.

[0012] Further, the connecting piece comprises a connecting rod penetrating through the two lugs, and nuts are threadedly connected to the outer ends of the connecting rod.

[0013] Further, a first spring is sleeved outside the rod body of the connecting rod, and the two ends of the first spring abut against the inner sides of the two lugs, and the first spring is in a compressed state between the two lugs.

[0014] Further, the annular sound-absorbing plate is provided with an annular groove for embedding the edge of the ring body at the plate body end of the annular sound-absorbing plate, and the depth of the groove is matched with the thickness of the ring body.

[0015] Further, a plurality of sound-absorbing micro-holes are penetratingly arranged on the side wall of the cylinder body formed by bending the annular sound-absorbing plate, and the sound-absorbing micro-holes are arranged in a matrix array along the surface of the plate body of the annular sound-absorbing plate.

[0016] Further, a strip-shaped clamping groove is arranged on the outer surface of the cylinder body formed by bending the sound-absorbing foam plate along the axial direction, the opening end of the clamping groove and the plate body abutting end of the annular sound-absorbing plate are both provided with a guide inclined surface, and the inclination angle of the inclined surface is 30-45 degrees.

[0017] Further, a blocking piece is fixedly connected to the inner wall of the cylinder body of the cylindrical shell at the position corresponding to the clamping groove, the blocking piece comprises a plurality of second springs fixedly connected to the inside of the cylindrical shell at one end, and a sliding sleeve head is sleeved and connected to the outer surface of the other end of the second spring, and the end of the sliding sleeve head away from the second spring can be clamped into the groove body of the clamping groove to form a limiting fit.

[0018] Compared with the prior art, the beneficial effects of the present application are:

[0019] Firstly, the sound-absorbing function of the sound-absorbing mechanism is combined with the air guiding function of the air guiding ring, which not only reduces noise but also improves ventilation efficiency, avoids the drawbacks that single sound-absorbing may increase air resistance or single air guiding may intensify noise, and the stable connecting structure not only ensures the stability of each component itself but also enhances the functional stability of the sound-absorbing mechanism and the air guiding ring, so that the sound-absorbing and air guiding effects are more durable; the cooperation of the blocking piece and the sound-absorbing foam plate, the cooperation of the connecting frame and the motor, etc., realize the double improvement of structural stability and functional efficiency.

[0020] Secondly, aiming at the problem of poor sound-absorbing effect, the sound-absorbing micro-holes of the annular sound-absorbing plate are combined with the sound-absorbing foam plate to form a high-efficiency sound-absorbing system, which significantly improves the absorption capacity for medium and high frequency noise and solves the problem of incomplete sound-absorbing of single sound-absorbing structure.

[0021] The present application will be explained in detail below in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1Structure diagram of the present application;

[0023] Figure 2 Structure diagram of the present application;

[0024] Figure 3 Structure diagram of the present application;

[0025] Figure 4 Structure diagram of the present application;

[0026] Figure 5 Structure diagram of the present application; Figure 4 Structure diagram of the present application;

[0027] Figure 6 Structure diagram of the present application;

[0028] Figure 7 Structure diagram of the present application.

[0029] In the figure: 10, cylindrical shell; 11, blocking piece; 111, second spring; 112, sliding sleeve; 20, support; 30, silencing mechanism; 31, silencing sleeve; 311, annular silencing plate; 3111, groove; 3112, silencing micropore; 312, silencing foam board; 3121, clamping groove; 3122, inclined surface; 32, air guide ring; 321, ring body; 322, lug; 323, lug; 3231, connecting rod; 3232, nut; 3243, first spring; 40, motor; 41, fan blade. DETAILED DESCRIPTION

[0030] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings, in which several embodiments of the present application are given, but the present application can be realized in different forms and is not limited to the embodiments described herein, on the contrary, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0031] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element, the terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. The use herein of the terms "including", "comprising", "having" and the like are meant to encompass the items listed thereafter as well as other items.

[0033] The embodiment of the present application provides a high-efficiency energy-saving axial flow fan, and a schematic diagram of the high-efficiency energy-saving axial flow fan is shown in the figure. Figures 1-4 The high-efficiency energy-saving axial flow fan comprises a cylindrical shell 10 and a support 20 fixedly connected to the bottom end of the cylindrical shell 10, the inner wall of the cylindrical shell 10 is connected with a silencing mechanism 30, the inside of the cylindrical shell 10 is connected with a motor 40, and the two ends of the motor 40 are connected with fan blades 41.

[0034] The silencing mechanism 30 comprises two silencing sleeves 31 connected to the inside of the cylindrical shell 10, and the ends of the two silencing sleeves 31 away from each other are connected with air guide rings 32.

[0035] The silencing sleeve 31 comprises an annular silencing plate 311 connected with the inner wall of the cylindrical shell 10 and a silencing foam plate 312 arranged between the annular silencing plate 311 and the cylindrical shell 10.

[0036] It should be noted that, in the embodiment, the cylindrical shell 10 provides a mounting base for the whole fan, and the support 20 is fixedly connected to the bottom end of the cylindrical shell 10 to realize stable support. The silencing mechanism 30 is detachably connected to the inner wall of the cylindrical shell 10, the two silencing sleeves 31 are respectively located on the two sides of the motor 40, the silencing sleeve 31 is composed of the annular silencing plate 311 and the silencing foam plate 312, the annular silencing plate 311 is attached to the inner wall of the cylindrical shell 10, and the silencing foam plate 312 is clamped between the two. The motor 40 is fixed in the middle of the inside of the cylindrical shell 10, the fan blades 41 at the two ends of the output shaft of the motor 40 rotate to push the axial flow of gas under the drive of the motor 40, and the air guide rings 32 are connected to the ends of the silencing sleeves 31 away from the motor 40 through a buckle structure to guide the airflow.

[0037] The stable connection of the support 20 ensures the stability of the whole fan; the combination of the annular silencing plate 311 and the silencing foam plate 312 in the silencing mechanism 30 forms a double silencing structure, which can effectively absorb the noise generated during the operation of the fan; the symmetrical arrangement of the motor 40 and the fan blades 41 in combination with the guidance of the air guide rings 32 improves the efficiency of the flow of gas. The combination solves the problems of poor silencing effect and unstable operation of the existing fan, improves the overall operation efficiency, and significantly reduces the noise, which is better than the sum of the effects of single silencing or single support structure.

[0038] Optionally, please refer to the attached Figure 3The motor 40 is externally connected to a plurality of connecting frames 41, which are arranged around the motor 40, and the connecting frames 41 are arranged between the two soundproof sleeves 31.

[0039] In this embodiment, the plurality of connecting frames 42, which are evenly distributed around the motor 40, are arranged in a radial manner around the shell of the motor 40, and the two ends of the connecting frames 42 are fixed to the shell of the motor 40 and the inner wall of the annular soundproof plate 311, respectively, and are located in the interval region between the two soundproof sleeves 31. The connecting frames 42 disperse the force of the motor 40 to the annular soundproof plate 311, thereby achieving stable fixation of the motor 40. The radial distribution and the fixed structure at both ends of the connecting frames 42 effectively disperse the vibration generated by the motor 40 during high-speed operation, thereby preventing the motor 40 from loosening. This structure cooperates with the soundproof sleeve 31 to ensure the stability of the motor 40 and does not affect the soundproof function of the soundproof mechanism 30. Compared with the structure of fixing the motor 40 alone, this combination significantly improves the stability of the motor 40 during operation, reduces the wear of components caused by vibration, and prolongs the service life of the fan.

[0040] Optionally, please refer to the attached Figure 3 and 4 The air guide ring 32 includes a ring body 321 connected to one end of the soundproof sleeve 31, and a plurality of air guide blades 322 are connected to the inside of the ring body 321.

[0041] In this embodiment, the ring body 321 of the air guide ring 32 is connected to the end of the soundproof sleeve 31 by bolts, and the air guide blades 322, which are evenly distributed around the inside of the ring body 321, are fixed to the inner wall of the ring body 321. When the gas flows through the air guide ring 32, the air guide blades 322 guide and comb the airflow, so that the airflow flows in the preset direction. The uniform distribution of the air guide blades 322 can effectively reduce airflow turbulence and reduce wind resistance. The connection structure of the air guide ring 32 and the soundproof sleeve 31 combines the air guide function and the soundproof function, which can guide the airflow to improve the ventilation efficiency while avoiding airflow turbulence to intensify the noise. Compared with the fan without the air guide structure, this combination improves the ventilation efficiency and further reduces the noise, which is better than the single air guide or soundproof structure.

[0042] Optionally, please refer to the attached Figure 3 and 4 The ring body 321 is formed by a plate body bent into a ring shape, and the two ends of the plate body of the ring body 321 are connected to lugs 322 extending inwardly, and the two lugs 322 are connected by a connecting piece 323.

[0043] In the embodiment, the ring body 321 is bent into a ring shape from a metal plate body, the lugs 323 at both ends of the plate body are bent inward to the ring, and the two lugs 323 are locked by the connecting piece 324 to keep the ring body 321 stable in the ring shape. The combination of the lugs 323 and the connecting piece 324 realizes detachable and stable connection of the ring body 321, facilitating installation and maintenance of the air guide ring 32. The material of the metal plate body and the bending structure of the lugs 323 enhance the structural strength of the ring body 321, so that it is not easy to deform under the impact of air flow. The structure cooperates with the air guide blades 322 to ensure that the overall structure of the air guide ring 32 is stable, the air guide effect is long-lasting, and the problems of easy deformation and unstable connection of the existing air guide ring are solved.

[0044] Optionally, please refer to the attached Figure 4 The connecting piece 323 includes a connecting rod 3231 penetrating the two lugs 322, and nuts 3232 are threadedly connected to the outer portions of both ends of the connecting rod 3231.

[0045] In the embodiment, the connecting rod 3241 of the connecting piece 324 penetrates the reserved holes of the two lugs 323, and the locking nuts 3242 threadedly connected at both ends abut against the outer side surfaces of the lugs 323, and the two lugs 323 are tightly locked by tightening the nuts. The thread connection of the connecting rod 3241 and the locking nuts 3242 realizes tight fixing of the lugs 323 and ensures the stability of the ring shape of the ring body 321. The structure cooperates with the lugs 323 of the ring body 321 to make the connection strength of the ring body 321 higher and facilitate disassembly. Compared with other connection methods, this combined connection is more stable and facilitates later maintenance, thereby improving the overall reliability of the air guide ring 32.

[0046] Optionally, please refer to the attached Figure 4 and 5 The rod body of the connecting rod 3241 is externally sleeved with a first spring 3243, both ends of the first spring 3243 abut against the inner side surfaces of the two lugs 323, and the first spring 3243 is in a compressed state between the two lugs 323.

[0047] In the embodiment, the first spring 3243 externally sleeved with the connecting rod 3241 is in a compressed state, both ends thereof abut against the inner side surfaces of the two lugs 323, the spring elastic force generates a continuous pre-tightening force on the lugs 323, and the first spring 3243 cooperates with the locking nuts 3242 to prevent loosening. The pre-tightening force of the first spring 3243 and the locking force of the locking nuts 3242 form double fixing, effectively preventing loosening of the nuts due to vibration of the fan. The structure cooperates with the connecting piece 324 to solve the problem of connection loosening after long-term operation, greatly improve the connection stability of the ring body 321, and is superior to the effect of single nut locking.

[0048] Optionally, please refer to the attached Figure 3 and 4The annular sound-absorbing plate 311 is provided with an annular groove 3111 at the plate body end of the air guide ring 32, which is used for embedding the edge of the ring body 321. The depth of the groove 3111 is matched with the thickness of the ring body 321.

[0049] In this embodiment, the annular groove 3111 at the end of the annular sound-absorbing plate 311 is matched with the edge of the ring body 321, and the edge of the ring body 321 is embedded in the groove 3111, thereby increasing the contact area and connection sealing of the air guide ring 32 and the sound-absorbing sleeve 31.

[0050] Optionally, please refer to the attached Figure 4 and 5 The annular sound-absorbing plate 311 is provided with a plurality of sound-absorbing micro-holes 3112 on the side wall of the cylinder body, which are arranged in a matrix array on the surface of the plate body of the annular sound-absorbing plate 311.

[0051] In this embodiment, the plurality of sound-absorbing micro-holes 3112 on the side wall of the cylinder body of the annular sound-absorbing plate 311 are arranged in a matrix array, and sound waves can enter the inside of the annular sound-absorbing plate 311 through the micro-holes, interact with the sound-absorbing foam plate 312, and be absorbed and weakened.

[0052] Optionally, please refer to the attached Figure 4 The outer surface of the sound-absorbing foam plate 312 is provided with a strip-shaped clamping groove 3121 along the axial direction, and the opening end of the clamping groove 3121 and the plate body abutting end of the annular sound-absorbing plate 311 are both provided with a guide inclined surface 3122, and the inclination angle of the inclined surface 3122 is 30-45 degrees.

[0053] In this embodiment, the strip-shaped clamping groove 3121 on the outer surface of the sound-absorbing foam plate 312 cooperates with the guide inclined surface 3122 at the abutting end of the annular sound-absorbing plate 311, and the inclination angle of the inclined surface 3122 is 30-45 degrees, which facilitates the installation and abutting of the sound-absorbing foam plate 312 and the annular sound-absorbing plate 311, and the clamping groove 3121 provides a structural basis for limiting the subsequent blocking piece 11.

[0054] Optionally, please refer to the attached Figure 4 The inner wall of the cylindrical shell 10 is fixedly connected with a blocking piece 11 at the position corresponding to the clamping groove 3121, and the blocking piece 11 includes a plurality of second springs 111 fixedly connected to the inside of the cylindrical shell 10 at one end, and a sliding sleeve head 112 connected to the outer surface of the other end of the second spring 111, and the end of the sliding sleeve head 112 away from the second spring 111 can be clamped into the groove body of the clamping groove 3121 to form a limiting cooperation.

[0055] In this embodiment, the blocking piece 11 on the inner wall of the cylindrical shell 10, the one end of the second spring 111 is fixed to the shell, and the sliding sleeve head 112 at the other end is clamped into the clamping groove 3121 of the sound-absorbing foam plate 312 under the action of the spring force, thereby forming a limiting cooperation and preventing the sound-absorbing foam plate 312 from moving axially.

[0056] The specific operation mode of the present application is as follows:

[0057] After the motor 40 is started, the fan blades 41 at both ends of the output shaft rotate synchronously, pushing the gas to flow in the axial direction. The gas first passes through the air guide ring 32, and the air guide blades 322 uniformly distributed inside the ring body 321 guide and comb the airflow, reducing airflow turbulence and making the airflow enter the cylindrical shell 10 inside in the preset direction. The air guide ring 32 is embedded in the groove 3111 at the end of the annular sound-absorbing plate 311 through the edge of the ring body 321, and is tightly fixed by cooperating with the bolt connection to avoid air leakage from the connection.

[0058] During the gas flow through the cylindrical shell 10, the sound-absorbing mechanism 30 plays a sound-absorbing role. The sound-absorbing micro-holes 3112 on the side wall of the cylindrical body of the annular sound-absorbing plate 311 introduce the sound waves generated by the fan operation into the inside, and the sound-absorbing foam board 312 clamped between the annular sound-absorbing plate 311 and the cylindrical shell 10 absorbs and weakens the sound waves, and the double action reduces the spread of noise. The clamping groove 3121 on the outer surface of the sound-absorbing foam board 312 cooperates with the blocking piece 11 on the inner wall of the cylindrical shell 10, the second spring 111 pushes the sliding sleeve head 112 to be clamped into the clamping groove 3121, preventing the sound-absorbing foam board 312 from moving axially under the impact and vibration of the airflow, and ensuring the stability of the sound-absorbing effect.

[0059] The ring body 321 of the air guide ring 32 is bent from a metal plate body, and the lugs 323 at both ends are locked by the connecting piece 324, the connecting rod 3241 is fixed with a locking nut 3242 after penetrating the lug 323, and at the same time the first spring 3243 outside the connecting rod 3241 is in a compressed state, which generates a continuous pre-tightening force on the lug 323, preventing loosening after long-term operation, and ensuring the stability of the structure of the air guide ring 32. The guide inclined surface 3122 at the abutting end of the sound-absorbing foam board 312 and the annular sound-absorbing plate 311 plays a role during installation, improving the assembly efficiency of the sound-absorbing mechanism 30.

[0060] The above describes the present application by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present application is not limited by the above manner, as long as this non-essential improvement or direct application of the inventive concept and technical solution to other occasions is adopted, which is within the protection scope of the present application.

Claims

1. A high-efficiency energy-saving axial flow fan, comprising a cylindrical shell (10), and a bracket (20) fixedly connected to the bottom end of the cylindrical shell (10) by bolts, characterized in that: The inner wall of the cylindrical shell (10) is connected to a silencer mechanism (30), the interior of the cylindrical shell (10) is connected to a motor (40), and both ends of the motor (40) are connected to fan blades (41); The silencer mechanism (30) includes a silencer sleeve (31) connected to the inside of the cylindrical shell (10), two silencer sleeves (31) are provided, and an air guide ring (32) is connected to one end of the two silencer sleeves (31) that is away from each other; The silencer sleeve (31) comprises an annular silencer plate (311) connected to the inner wall of the cylindrical shell (10), and a silencer foam cotton plate (312) arranged between the annular silencer plate (311) and the cylindrical shell (10).

2. The high-efficiency energy-saving axial flow fan according to claim 1, characterized in that: The motor (40) is externally connected to a plurality of connecting frames (41), the plurality of connecting frames (41) are arranged around the motor (40), and the connecting frames (41) are arranged between two silencer sleeves (31).

3. The high-efficiency energy-saving axial flow fan according to claim 1, characterized in that: The air guide ring (32) comprises a ring body (321) connected to one end of the silencer sleeve (31), and a plurality of air guide blades (322) are connected inside the ring body (321).

4. The high-efficiency energy-saving axial flow fan according to claim 1, characterized in that: The ring body (321) is formed by a plate body bent into a ring shape, and both ends of the plate body of the ring body (321) are connected with lugs (322) extending inwardly of the ring, and the two lugs (322) are connected by a connecting piece (323).

5. The high-efficiency energy-saving axial flow fan according to claim 4, characterized in that: The connecting member (323) comprises a connecting rod (3231) passing through the two lugs (322), and nuts (3232) are externally connected to both ends of the connecting rod (3231) through threads.

6. The high-efficiency energy-saving axial flow fan according to claim 5, characterized in that: A first spring (3243) is sleeved on the outside of the rod body of the connecting rod (3241), and the two ends of the first spring (3243) are respectively in contact with the inner side surfaces of the two lugs (323), and the first spring (3243) is in a compressed state and is located between the two lugs (323).

7. The high-efficiency energy-saving axial flow fan according to claim 1, characterized in that: The end of the annular sound-absorbing plate (311) facing the air guide ring (32) is provided with an annular groove (3111) for the edge of the ring body (321) to be embedded, and the depth of the groove (3111) is adapted to the thickness of the ring body (321).

8. The high-efficiency energy-saving axial flow fan according to claim 1, characterized in that: A plurality of muffler microholes (3112) are provided through the cylindrical side wall formed by the bending of the annular muffler plate (311), and the plurality of muffler microholes (3112) are arranged in a matrix array along the plate surface of the annular muffler plate (311).

9. The high-efficiency energy-saving axial flow fan according to claim 1, characterized in that: The outer surface of the cylinder formed by the bending of the sound-absorbing foam cotton board (312) is provided with a strip-shaped groove (3121) along the axial direction, and the opening end of the groove (3121) and the plate body butt end of the annular sound-absorbing board (311) are both provided with a guiding inclined surface (3122), and the inclination angle of the inclined surface (3122) is 30-45 degrees.

10. The high-efficiency energy-saving axial flow fan according to claim 1, characterized in that: A blocking member (11) is fixedly connected to the inner wall of the cylindrical shell (10) at a position corresponding to the card slot (3121), and the blocking member (111) includes a plurality of second springs (111) one end of which is fixedly connected to the inside of the cylindrical shell (10), and a sliding sleeve (112) is sleeved on the outer surface of the other end of the second spring (111), and the end of the sliding sleeve (112) away from the second spring (111) can be correspondingly inserted into the groove body of the card slot (3121) to form a limiting fit.

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