Air inlet noise reduction structure of magnetic suspension fan

Abstract

The utility model relates to the technical field of magnetic suspension fans, and discloses an air inlet noise reduction structure of a magnetic suspension fan, which comprises a shell, a volute, an impeller, a connecting end, an air inlet pipe, a first noise reduction sheet and a second noise reduction sheet. Air enters the air inlet pipe to be in contact with the first noise reduction piece, the air is guided by the first noise reduction piece to be sucked into the air inlet pipe in a spiral motion state, resistance between the air and an external structure is reduced, and the air can be in contact with permeable cotton on the inner side of the mounting plate when entering the inner side of the air inlet pipe; gas can be evenly and normally discharged into the connecting end through the permeability of the permeable cotton, the gas can be buffered to a certain degree through transition of the permeable cotton, noise caused by large gas inlet force is avoided, when the gas is discharged through the volute, the gas is guided out in a vortex mode through the second noise reduction piece on the inner side of the volute, and therefore the silencing and noise reduction effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic suspension fans, in particular to an air inlet silencer structure of a magnetic suspension fan. Background Art

[0002] The magnetic levitation blower is a mechanical device for conveying gas. It adopts core technologies such as magnetic levitation bearings, three-dimensional flow impellers, high-speed permanent magnet synchronous motors, high-efficiency inverter speed regulation, and intelligent monitoring and control. When starting, it first suspends and then rotates. It is frictionless and does not require lubrication. The three-dimensional flow impeller is directly connected to the rotor, and the transmission is zero-loss. It overcomes the shortcomings of traditional blowers and air levitation blowers, and has the advantages of high efficiency, low noise, few failures, and no need for a lubrication system.

[0003] Existing magnetic levitation centrifugal blowers mainly use a sound insulation baffle structure to separate the main engine air inlet and the fan air inlet for noise reduction. Most of the existing sound insulation panels are designed vertically or horizontally. When the airflow passes through the baffle, the flow direction changes greatly and the flow resistance is large. Noise is easily generated in places where the airflow direction changes greatly, resulting in limited noise reduction effect. Therefore, we propose an air inlet silencer structure for magnetic levitation blowers. Utility Model Content

[0004] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides an air inlet silencer structure of a magnetic suspension fan.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: an air inlet and silencer structure of a magnetic levitation fan, comprising an outer casing, a volute and an impeller, wherein a connecting end is integrally formed at one end of the volute, and an air inlet pipe assembled and docked with the connecting end is provided on one side of the connecting end. The air inlet pipe is an elliptical hollow structure, and a first noise reduction sheet is installed on the inner side of the air inlet pipe, and a second noise reduction sheet is installed on the inner side of the volute.

[0006] Preferably, the first noise reduction sheet and the second noise reduction sheet are both spiral structures. When the impeller is rotated and started, the external wind is sucked in in a vortex through the first noise reduction sheet inside the air inlet pipe.

[0007] Preferably, when the impeller rotates to drive the wind to be discharged through the volute, the external wind is discharged in a vortex state through the second noise reduction sheet inside the volute.

[0008] Preferably, a docking end is installed on the inner side of the air inlet duct, a mounting plate is provided inside the air inlet duct, and permeable cotton for wind buffering is provided on the inner side of the mounting plate. The permeable cotton itself has deformation characteristics, and connecting parts are installed at the upper and lower positions of one end of the mounting plate.

[0009] Preferably, a rectangular groove is opened inside the connecting part, a card pad is provided on the inner side of the rectangular groove, the card pad itself has deformation characteristics, a card slot is opened on the inner side of the air inlet pipe, and a limit card is installed and inserted inside the rectangular groove.

[0010] Preferably, when the mounting plate is installed and docked with the docking end on the inner side of the air inlet duct, when the control limit card is inserted into the rectangular groove inside the connecting piece, the limit card and the card groove on the inner side of the air inlet duct are in a limit-clamping state, and the two sides of the limit card and the card pads on the inner side of the rectangular groove are in an extruded and fixed state.

[0011] Preferably, the connecting end is integrally formed with both ends of the air inlet pipe, a screw groove is opened inside the connecting end, and the internal thread of the screw groove is installed with a fixing bolt that fixes the connecting end and the air inlet pipe, and one end of the fixing bolt is threadedly connected to a fixing nut.

[0012] Beneficial effects

[0013] The utility model provides an air inlet silencer structure for a magnetic levitation fan, which has the following beneficial effects:

[0014] 1. The air intake and silencer structure of the magnetic levitation fan. In this article, when the impeller starts to rotate, the impeller can inhale external air through the air intake pipe. When the air enters the air intake pipe, the air will contact the first noise reduction plate. The first noise reduction plate itself is a spiral structure. The air will be sucked into the air intake pipe in a spiral motion state under the guidance of the first noise reduction plate, reducing the resistance between the air and the external structure. When the air enters the inside of the air intake pipe, it will contact the permeable cotton on the inside of the mounting plate. The permeable cotton itself can discharge the gas evenly and normally into the connecting end. The transition of the permeable cotton can buffer the gas to a certain extent, avoiding the noise generated by the large air intake force. Similarly, when the gas is discharged through the volute, it is discharged in a vortex through the second noise reduction plate on the inside of the volute, thereby achieving the purpose of improving the sound insulation and noise reduction effect.

[0015] 2. The air inlet silencer structure of the magnetic levitation fan has a structure in which the permeable cotton on the inner side of the mounting plate can buffer and penetrate the incoming air while further filtering the dust in the air itself, and then discharge the filtered air into the interior of the connecting end. In this way, the permeable cotton can further filter the gas while buffering the gas, thereby achieving the effect of ensuring the stability of the impeller operation and reducing the adsorption of dust on the impeller itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only exemplary, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are intended solely to complement the contents disclosed herein and to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in size, without affecting the efficacy and objectives of the present invention, shall remain within the scope of the technical contents disclosed herein.

[0018] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a partial schematic diagram of the volute of the utility model;

[0020] Figure 3 For this utility model Figure 1 A magnified view of middle A;

[0021] Figure 4 For this utility model Figure 1 Magnified view of B.

[0022] Legend:

[0023] 1. Outer casing; 2. Volute; 3. Impeller; 4. Connecting end; 5. Air inlet pipe; 6. First noise reduction plate; 7. Second noise reduction plate; 8. Docking end; 9. Mounting plate; 10. Permeable cotton; 11. Connecting piece; 12. Rectangular groove; 13. Slot; 14. Pad; 15. Limiting clip; 16. Connecting end; 17. Screw groove; 18. Fixing bolt; 19. Fixing nut. DETAILED DESCRIPTION

[0024] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0025] Example: A magnetic levitation fan air inlet silencer structure, such as Figures 1-4As shown, it includes an outer shell 1, a volute 2 and an impeller 3. A connecting end 4 is integrally formed at one end of the volute 2. An air inlet pipe 5 assembled and docked with the connecting end 4 is provided on one side of the connecting end 4. The air inlet pipe 5 is an elliptical hollow structure. A first noise reduction sheet 6 is installed on the inner side of the air inlet pipe 5. A second noise reduction sheet 7 is installed on the inner side of the volute 2. A docking end 8 is installed on the inner side of the air inlet pipe 5. A mounting plate 9 is provided inside the air inlet pipe 5. A permeable cotton 10 for wind buffering is provided on the inner side of the mounting plate 9. The permeable cotton 10 itself has deformation characteristics. One end of the mounting plate 9 is evenly positioned up and down. A connecting piece 11 is installed, a rectangular groove 12 is opened inside the connecting piece 11, a clamping pad 14 is set on the inner side of the rectangular groove 12, and the clamping pad 14 itself has deformation characteristics. A clamping groove 13 is opened on the inner side of the air inlet pipe 5, and a limiting clamping piece 15 is installed and inserted inside the rectangular groove 12. The connecting end 4 and both ends of the air inlet pipe 5 are integrally formed with a connecting end 16, and a screw groove 17 is opened inside the connecting end 16. The internal thread of the screw groove 17 is installed with a fixing bolt 18 for fixing the connecting end 4 and the air inlet pipe 5, and one end of the fixing bolt 18 is threadedly connected to a fixing nut 19.

[0026] Furthermore, the first noise reduction sheet 6 and the second noise reduction sheet 7 are both spiral structures. When the impeller 3 starts to rotate, the external wind is sucked into the air inlet pipe 5 through the first noise reduction sheet 6 in a vortex state.

[0027] Furthermore, when the impeller 3 rotates to drive the wind to be discharged through the volute 2 , the external wind is discharged in a vortex state through the second noise reduction sheet 7 inside the volute 2 .

[0028] Furthermore, when the mounting plate 9 is installed and docked with the docking end 8 on the inner side of the air inlet pipe 5, when the control limit card 15 is inserted into the rectangular groove 12 inside the connecting member 11, the limit card 15 and the card groove 13 on the inner side of the air inlet pipe 5 are in a limit-engaging state, and the two sides of the limit card 15 and the card pads 14 on the inner side of the rectangular groove 12 are in an extruded and fixed state.

[0029] The working principle of this utility model:

[0030] When the impeller 3 starts to rotate, it can inhale external air through the air inlet pipe 5. When the air enters the inside of the air inlet pipe 5, the air will come into contact with the first noise reduction plate 6. The first noise reduction plate 6 itself has a spiral structure. The air will be inhaled into the air inlet pipe 5 in a spiral motion state under the guidance of the first noise reduction plate 6, reducing the resistance between the air and the external structure. When the air enters the inside of the air inlet pipe 5, it will come into contact with the permeable cotton 10 on the inside of the mounting plate 9. The permeable cotton 10 itself can discharge the gas evenly and normally into the connecting end 4. The transition of the permeable cotton 10 can buffer the gas to a certain extent, avoiding the noise generated by the large intake force. Similarly, when the gas is discharged through the volute 2, it is discharged in a vortex through the second noise reduction plate 7 on the inside of the volute 2, thereby improving the sound insulation and noise reduction effect.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. An air inlet silencer structure for a magnetic levitation fan, comprising a housing (1), a volute (2), and an impeller (3), characterized in that: A connecting end (4) is integrally formed at one end of the volute (2); an air inlet pipe (5) assembled and docked with the connecting end (4) is provided on one side of the connecting end (4); the air inlet pipe (5) is an elliptical hollow structure; a first noise reduction sheet (6) is installed on the inner side of the air inlet pipe (5); and a second noise reduction sheet (7) is installed on the inner side of the volute (2).

2. The air inlet silencing structure of a magnetic levitation fan according to claim 1, characterized in that: The first noise reduction sheet (6) and the second noise reduction sheet (7) are both spiral structures. When the impeller (3) is rotated and started, the external wind is sucked into the air inlet pipe (5) through the first noise reduction sheet (6) inside the air inlet pipe (5) in a vortex state.

3. The air inlet silencing structure of a magnetic levitation fan according to claim 2, characterized in that: When the impeller (3) rotates and drives the wind to be discharged through the volute (2), the external wind is discharged in a vortex state through the second noise reduction sheet (7) inside the volute (2).

4. The air inlet silencing structure of a magnetic levitation fan according to claim 2, characterized in that: A docking end (8) is installed on the inner side of the air inlet pipe (5), a mounting plate (9) is provided inside the air inlet pipe (5), a permeable cotton (10) for buffering wind force is provided on the inner side of the mounting plate (9), and connecting pieces (11) are installed at upper and lower positions of one end of the mounting plate (9).

5. The air inlet silencing structure of a magnetic levitation fan according to claim 4, characterized in that: A rectangular groove (12) is provided inside the connecting piece (11), a clamping pad (14) is provided inside the rectangular groove (12), and the clamping pad (14) itself has a deformation characteristic. A clamping groove (13) is provided inside the air inlet pipe (5), and a limit clamping piece (15) is installed and inserted inside the rectangular groove (12).

6. The air inlet silencing structure of a magnetic levitation fan according to claim 4, characterized in that: When the mounting plate (9) is mounted and docked with the docking end (8) on the inner side of the air inlet pipe (5), the control limit clamp (15) is inserted into the rectangular groove (12) inside the connecting piece (11), and the limit clamp (15) and the clamping groove (13) on the inner side of the air inlet pipe (5) are in a limit clamping state, and the two sides of the limit clamp (15) and the clamping pads (14) on the inner side of the rectangular groove (12) are in an extruded fixed state.

7. The air inlet silencing structure of a magnetic levitation fan according to claim 1 is characterized in that: The connecting end (4) and both ends of the air inlet pipe (5) are integrally formed with a connecting end (16), a screw groove (17) is provided inside the connecting end (16), and a fixing bolt (18) for fixing the connecting end (4) and the air inlet pipe (5) is installed on the internal thread of the screw groove (17), and one end of the fixing bolt (18) is threadedly connected to a fixing nut (19).

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