Magnetic suspension fan

Abstract

The utility model provides a magnetic suspension draught fan which comprises a magnetic suspension draught fan body, the magnetic suspension draught fan body is installed on a supporting frame, an air inlet pipe is arranged at the input end of the magnetic suspension draught fan body, an air outlet pipe is arranged at the output end of the magnetic suspension draught fan body, and the magnetic suspension draught fan body is connected with a driving motor. Silencing inner sleeves are arranged in the air inlet pipe and the air outlet pipe, and sound insulation outer sleeves are arranged on the outer side of the air inlet pipe, the outer side of the air outlet pipe and the outer side of the driving motor. Through the arrangement of the silencing inner sleeve, the flowing noise of airflow in the air inlet pipe and the air outlet pipe can be reduced, and the sound insulation outer sleeve can reduce the rotation noise of the driving motor and further reduce the operation noise of air inlet and air outlet of the air inlet pipe and the air outlet pipe. According to the magnetic suspension fan, noise and vibration generated when the magnetic suspension fan body works can be effectively reduced, and the operation stability and reliability of the magnetic suspension fan body are improved.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of magnetic suspension fans, and in particular to a magnetic suspension fan. Background Art

[0002] Magnetic levitation centrifugal wind is a type of turbine equipment that uses magnetic levitation bearings. Its main structure is that the blower impeller is directly installed on the extended end of the motor shaft, and the rotor is vertically suspended on the active magnetic bearing controller. It does not require a speed increaser or coupling, and is a single-stage high-speed centrifugal fan that is directly driven by a high-speed motor and regulated by a frequency converter.

[0003] For example, Chinese patent publication number CN212838636U provides a noise reduction device for a magnetic levitation fan, a noise reduction device for a magnetic levitation fan, a protective shell is provided on one side of the magnetic levitation fan body, and sound insulation cotton is fixedly connected on both sides of the inner cavity of the protective shell. The above application allows personnel to add a noise reduction structure to the magnetic levitation fan body according to the actual usage scenario, and also facilitates personnel to quickly maintain the magnetic levitation fan body drive motor. The installation of the noise reduction mechanism is easy for personnel to quickly get started, which provides convenience for the staff. However, the device of the above application does not provide a silencer mechanism at the air inlet and outlet pipes. When a large amount of gas enters the air inlet or is blown out from the air outlet, the gas may come into direct contact with the pipe body, causing noise. Utility Model Content

[0004] 1. Technical problems to be solved by the utility model:

[0005] The utility model provides a magnetic suspension fan to solve the technical problems existing in the above-mentioned background technology.

[0006] 2. Technical solution:

[0007] To achieve the above-mentioned purpose, the technical solution provided by the utility model is: a magnetic levitation fan, including a magnetic levitation fan body, the magnetic levitation fan body is installed on a support frame, the input end of the magnetic levitation fan body is provided with an air inlet pipe, and the output end is provided with an air outlet pipe, the magnetic levitation fan body is connected to a driving motor, and a soundproofing inner sleeve is provided in the air inlet pipe and the air outlet pipe, and a soundproofing outer sleeve is provided on the outside of the air inlet pipe, the air outlet pipe and the driving motor.

[0008] Preferably, the sound-absorbing inner sleeve comprises an annular sleeve, a plurality of raised portions are arranged at equal distances on the inner wall of the annular sleeve, a sound-absorbing cavity is provided in the raised portion, and a plurality of sound-absorbing holes are provided on the annular sleeve.

[0009] Preferably, the sound insulation jacket includes a sound insulation box, an installation groove is provided on the inner wall of the sound insulation box, sound insulation cotton is arranged in the installation groove, and sleeve holes are provided on two opposite surfaces of the sound insulation box, and the sleeve holes are sleeved on the outside of the air inlet pipe, the air outlet pipe and the drive motor.

[0010] Preferably, the sound insulation jacket also includes a sound insulation cover hinged on the sound insulation box, and sound insulation cotton is also arranged in the sound insulation cover, and the sound insulation cotton is provided with wavy sound-absorbing patterns.

[0011] Preferably, a mounting ring is provided at the upper end of the annular sleeve, a fixing hole matching the mounting ring is provided on the sound insulation box, a plurality of connecting holes are provided on the mounting ring, and the connecting holes are mounted on the sound insulation box by bolts.

[0012] 3. Beneficial effects:

[0013] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0014] The utility model can reduce the flow noise of the airflow in the air inlet and outlet pipes by setting the silencer inner sleeve, and the soundproof outer sleeve can reduce the rotation noise of the drive motor and further reduce the operation noise of the air inlet and outlet pipes. This utility model can effectively reduce the noise and vibration generated by the magnetic suspension fan body when working, and improve the operation stability and reliability of the magnetic suspension fan body.

[0015] The function of the raised portion of the silencer inner sleeve of the utility model is to reflect sound waves, and reflect the sound waves back into the air inlet and outlet ducts, thereby reducing the propagation of sound waves. A soundproof cavity is provided in the raised portion, and the function of the soundproof cavity is to absorb sound waves. When the sound waves enter the soundproof cavity, they will be reflected and refracted multiple times in the soundproof cavity, and then absorbed by the air in the soundproof cavity. A number of silencer holes are provided on the annular sleeve, and the function of the silencer holes is to allow sound waves to pass through, but the sound waves will be filtered and attenuated, thereby reducing the energy of the sound waves. The silencer inner sleeve of the utility model realizes effective control and reduction of sound waves through reflection of the raised portion, absorption of the soundproof cavity, and filtering and attenuation of the silencer holes, thereby achieving the purpose of silencing. The advantages of the silencer inner sleeve of the utility model are simple structure, convenient manufacturing, good silencing effect, and can effectively improve the performance and stability of the magnetic levitation fan body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0018] Figure 3This is a schematic diagram of the structure of the silencer inner sleeve of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the sound insulation jacket of the utility model;

[0020] Figure 5 It is a schematic diagram of the explosion structure of the sound insulation jacket of the utility model.

[0021] Reference numerals:

[0022] 1. Magnetic levitation fan body; 11. Support frame; 12. Air inlet pipe; 13. Air outlet pipe; 14. Driving motor; 2. Silencer inner sleeve; 21. Annular sleeve; 22. Raised part; 23. Soundproofing cavity; 24. Silencer hole; 25. Mounting ring; 26. Connecting hole; 3. Soundproofing outer sleeve; 31. Soundproofing box; 32. Soundproofing cover; 33. Mounting slot; 34. Soundproofing cotton; 35. Sleeve hole. DETAILED DESCRIPTION

[0023] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "provided with", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] It should be noted that the structures not introduced in the present invention are not related to the design points and improvement directions of the present invention, and are the same as the prior art or can be implemented by using the prior art, and will not be described in detail here. Example

[0028] See attached Figures 1 to 5 A magnetic levitation fan comprises a magnetic levitation fan body 1, wherein the magnetic levitation fan body 1 is mounted on a support frame 11, an air inlet pipe 12 is arranged at the input end of the magnetic levitation fan body 1, and an air outlet pipe 13 is arranged at the output end thereof, the magnetic levitation fan body 1 is connected to a driving motor 14, a sound-absorbing inner sleeve 2 is arranged in the air inlet pipe 12 and the air outlet pipe 13, and a sound-absorbing outer sleeve 3 is arranged on the outer sides of the air inlet pipe 12, the air outlet pipe 13 and the driving motor 14.

[0029] The sound-absorbing inner sleeve 2 comprises an annular sleeve 21 , a plurality of convex parts 22 are arranged at equal distances on the inner wall of the annular sleeve 21 , a sound-absorbing cavity 23 is opened in the convex part 22 , and a plurality of sound-absorbing holes 24 are opened on the annular sleeve 21 .

[0030] The sound insulation jacket 3 includes a sound insulation box 31, an installation groove 33 is opened on the inner wall of the sound insulation box 31, and sound insulation cotton 34 is arranged in the installation groove 33. The sound insulation box 31 has two opposite surfaces with sleeve holes 35, and the sleeve holes 35 are sleeved on the outside of the air inlet pipe 12, the air outlet pipe 13 and the drive motor 14.

[0031] The soundproof jacket 3 also includes a soundproof cover 32 hinged on the soundproof box 31, and soundproof cotton 34 is also arranged in the soundproof cover 32, and a wavy sound-absorbing pattern is arranged on the soundproof cotton 34. The setting of the soundproof cover 32 can not only be quickly installed and disassembled, and is convenient for cleaning and maintenance of the soundproof box, but also convenient for replacing damaged parts, and the soundproof cover 32 can be opened to facilitate the detection of the soundproof effect of the soundproof jacket 3.

[0032] A mounting ring 25 is disposed at the upper end of the annular sleeve 21 , a fixing hole matching the mounting ring 25 is provided on the sound insulation box 31 , a plurality of connecting holes 26 are provided on the mounting ring 25 , and the connecting holes 26 are mounted on the sound insulation box 31 by bolts.

[0033] Working principle:

[0034] The function of the raised portion 22 of the silencer inner sleeve 2 is to reflect sound waves, and reflect the sound waves back into the air inlet duct 12 and the air outlet duct 13, thereby reducing the propagation of sound waves. A soundproof cavity 23 is provided in the raised portion 22, and the function of the soundproof cavity 23 is to absorb sound waves. When the sound waves enter the soundproof cavity 23, they will be reflected and refracted multiple times in the soundproof cavity 23, and then absorbed by the air in the soundproof cavity 23. A number of silencer holes 24 are provided on the annular sleeve 21, and the function of the silencer holes 24 is to allow sound waves to pass through, but they will filter and attenuate the sound waves, thereby reducing the energy of the sound waves. The silencer inner sleeve 2 of the utility model realizes effective control and reduction of sound waves through the reflection of the raised portion 22, the absorption of the soundproof cavity 23, and the filtering and attenuation of the silencer holes 24, thereby achieving the purpose of silencing.

[0035] The arrangement of the sleeve hole 35 facilitates the sound insulation box 31 to be sleeved on the air inlet pipe 12, the air outlet pipe 13 and the drive motor 14. The sound insulation box 31 and the sound insulation cover 32 are both provided with the sound insulation cotton 34 through the installation groove 33, and the installation is simple. In addition, the sound-absorbing inner sleeve 2 is also installed on the sound insulation box 31 through the installation ring 25 and the connection hole 26, which is convenient for disassembly and installation. The sound insulation box 31 utilizes the sound absorption performance of the sound insulation cotton 34 to achieve the sound insulation effect. The advantages of the sound insulation outer sleeve 3 are easy installation, good sound insulation effect, and low cost.

[0036] The above-described embodiments only express a certain implementation method of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the patent of the utility model shall be based on the attached claims.

Claims

1. A magnetic levitation fan, characterized in that: The invention comprises a magnetic levitation fan body (1), wherein the magnetic levitation fan body (1) is mounted on a support frame (11), an air inlet pipe (12) is arranged at the input end of the magnetic levitation fan body (1), and an air outlet pipe (13) is arranged at the output end thereof, the magnetic levitation fan body (1) is connected to a drive motor (14), a sound-absorbing inner sleeve (2) is arranged inside the air inlet pipe (12) and the air outlet pipe (13), and a sound-insulating outer sleeve (3) is arranged outside the air inlet pipe (12), the air outlet pipe (13) and the drive motor (14).

2. A magnetic levitation fan according to claim 1, characterized in that: The sound-absorbing inner sleeve (2) comprises an annular sleeve (21), a plurality of raised portions (22) are arranged at equal distances on the inner wall of the annular sleeve (21), a sound-absorbing cavity (23) is provided in the raised portions (22), and a plurality of sound-absorbing holes (24) are provided on the annular sleeve (21).

3. A magnetic levitation fan according to claim 2, characterized in that: The sound insulation jacket (3) comprises a sound insulation box (31), an installation groove (33) is provided on the inner wall of the sound insulation box (31), sound insulation cotton (34) is arranged in the installation groove (33), and sleeve holes (35) are provided on two opposite surfaces of the sound insulation box (31), and the sleeve holes (35) are sleeved on the outer sides of the air inlet pipe (12), the air outlet pipe (13) and the drive motor (14).

4. A magnetic levitation fan according to claim 3, characterized in that: The sound insulation jacket (3) further comprises a sound insulation cover (32) hinged on the sound insulation box (31), and sound insulation cotton (34) is also arranged in the sound insulation cover (32), and the sound insulation cotton (34) is provided with a wavy sound-absorbing pattern.

5. A magnetic levitation fan according to claim 4, characterized in that: The upper end of the annular sleeve (21) is provided with a mounting ring (25), the sound insulation box (31) is provided with a fixing hole that matches the mounting ring (25), the mounting ring (25) is provided with a plurality of connecting holes (26), and the connecting holes (26) are mounted on the sound insulation box (31) by means of bolts.

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