Air inlet noise reduction structure of magnetic suspension fan

Abstract

The utility model provides an air inlet noise reduction structure of a magnetic suspension fan, belongs to the technical field of magnetic suspension fans, and aims to solve the problem that the use effect of the whole magnetic suspension fan is affected due to the fact that the distance between an existing arc-shaped plate and an air inlet is fixed. Comprising a fan cabinet body, an air inlet filter screen, a mounting plate, a magnetic suspension fan body, a silencing limiting sliding groove, a silencing arc-shaped plate, a silencing mounting mechanism and a silencing adjusting mechanism. The mounting plate is fixedly connected to the upper end of the interior of the fan cabinet body; the magnetic suspension fan main body is fixedly connected to the lower end of the mounting plate; the silencing limiting sliding grooves are formed in the upper portions of the mounting plates correspondingly. The silencing arc-shaped plates are slidably connected to the upper portions of the interiors of the silencing limiting sliding grooves correspondingly. The multiple sets of noise reduction mounting mechanisms are arranged on the outer sides of the noise reduction arc-shaped plates correspondingly. And the noise reduction adjusting mechanism is arranged on the inner side of the mounting plate, dynamic adjustment during noise reduction is achieved, and the noise reduction effect during air inlet is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of magnetic levitation fans, and more specifically, particularly relates to an air inlet sound insulation structure of a magnetic levitation fan. Background Technique

[0002] A magnetic levitation fan is a mechanical device using magnetic levitation technology, mainly used for gas transportation and blowing. Since the air flow and the air inlet pipe will generate relatively large noise when the magnetic levitation fan is running, in order to ensure the quiet operation of the magnetic levitation fan, the inner wall of the pipe is designed with a specific shape or structure, such as an arc-shaped plate or a baffle, to change the flow mode of the air flow and reduce the noise generated by the air flow impact.

[0003] The existing application number is: CN201822123949.7. The utility model discloses an air inlet sound insulation structure of a magnetic levitation fan. The magnetic levitation fan is placed in a cabinet, and air inlets are provided on four sides of the cabinet. The structure also includes sound insulation boards. A plurality of sound insulation boards are evenly distributed along the circumferential direction of the air inlet channel in the magnetic levitation fan, and both ends of the sound insulation boards are fixed in the cabinet. The sound insulation boards are located inside the air inlets. The utility model uses radially arranged arc-shaped sound insulation boards centered on the air inlet channel to reduce sound, reduce flow resistance, and lower noise. When the magnetic levitation fan starts, external gas enters the cabinet through the air inlets of the cabinet, and then enters the air inlet channel through the sound insulation cavity between the internal radially arranged arc-shaped sound insulation boards. Since the sound insulation boards adopt an arc-shaped structure, the resistance of the air flow can be reduced, and thus the noise of the gas flow can be reduced. Since the sound insulation boards adopt a structure of a surface porous plate and internal sound insulation cotton, some high-frequency noises transmitted from the inside of the main machine can also be eliminated.

[0004] Based on the above, the arc-shaped plates on the inner wall of the air inlet pipe of the existing magnetic levitation fan are generally fixed structures, and the distance between the arc-shaped plates and the air inlets is fixed. When the air volume is small, the distance between the arc-shaped plates and the air inlets is relatively close, resulting in a large blockage of the air flow and affecting the working efficiency of the fan. When the air volume is large, the distance between the arc-shaped plates and the air inlets is relatively far, resulting in a large impact force of the air flow on the arc-shaped plates, resulting in a large noise during air inlet and affecting the use effect of the entire magnetic levitation fan. Content of the Utility Model

[0005] In order to solve the above technical problems, the utility model provides an air inlet sound insulation structure of a magnetic levitation fan to solve the problem that the arc-shaped plates on the inner wall of the air inlet pipe of the existing magnetic levitation fan are generally fixed structures, and the distance between the arc-shaped plates and the air inlets is fixed. When the air volume is small, the distance between the arc-shaped plates and the air inlets is relatively close, resulting in a large blockage of the air flow and affecting the working efficiency of the fan. When the air volume is large, the distance between the arc-shaped plates and the air inlets is relatively far, resulting in a large impact force of the air flow on the arc-shaped plates, resulting in a large noise during air inlet and affecting the use effect of the entire magnetic levitation fan.

[0006] The purpose and efficacy of an air inlet sound insulation structure of a magnetic levitation fan of the present utility model are achieved by the following specific technical means:

[0007] An air inlet sound insulation structure of a magnetic levitation fan, comprising a fan cabinet body, an air inlet filter screen, a mounting plate, a magnetic levitation fan main body, a sound insulation limit sliding groove, a sound insulation arc plate, a sound insulation mounting mechanism, and a sound insulation adjustment mechanism;

[0008] A total of four groups of the air inlet filter screens are provided, and the four groups of air inlet filter screens are respectively fixedly connected to the outer periphery above the fan cabinet body;

[0009] The mounting plate is fixedly connected to the upper end inside the fan cabinet body;

[0010] The magnetic levitation fan main body is fixedly connected to the lower end of the mounting plate;

[0011] A plurality of groups of the sound insulation limit sliding grooves are provided, and the plurality of groups of sound insulation limit sliding grooves are respectively opened above the mounting plate;

[0012] A plurality of groups of the sound insulation arc plates are provided, and the plurality of groups of sound insulation arc plates are respectively slidably connected to the upper part inside the sound insulation limit sliding grooves;

[0013] A plurality of groups of the sound insulation mounting mechanisms are provided, and the plurality of groups of sound insulation mounting mechanisms are respectively arranged on the outer sides of the sound insulation arc plates;

[0014] The sound insulation adjustment mechanism is arranged inside the mounting plate.

[0015] Further, the sound insulation mounting mechanism includes: a sound insulation hole plate, a sound insulation fixing bolt, and a sound insulation filling cotton;

[0016] A total of two groups of the sound insulation hole plates are provided, and the two groups of sound insulation hole plates are respectively arranged on the outer sides of the sound insulation arc plates, and both groups of sound insulation hole plates are of a porous structure;

[0017] The sound insulation fixing bolt is threadedly connected above the sound insulation hole plate, and the lower end of the sound insulation fixing bolt is threadedly connected to the sound insulation arc plate;

[0018] The sound insulation filling cotton is fixedly connected inside the sound insulation arc plate.

[0019] Further, the sound insulation adjustment mechanism includes: an adjustment transmission shaft, an adjustment fixing member, and an adjustment moving member;

[0020] The adjustment transmission shaft is coaxially and fixedly connected to the upper end of the rotating shaft of the magnetic levitation fan main body;

[0021] The adjustment fixing member is fixedly connected to the upper outer periphery of the adjustment transmission shaft;

[0022] The adjustment moving member is arranged on the lower outer periphery of the adjustment transmission shaft.

[0023] Further, the silencing adjustment mechanism further includes: an adjustment transmission rod and an adjustment driving member;

[0024] Two groups of the adjustment transmission rods are provided. Both groups of adjustment transmission rods are link structures that are hinged to each other. The upper ends of both groups of adjustment transmission rods are hinged to the adjustment fixing member, and the lower ends of both groups of adjustment transmission rods are hinged to the adjustment moving member;

[0025] Two groups of the adjustment driving members are provided. Both groups of adjustment driving members are fixedly connected to the outer sides of the adjustment transmission rods through flexible ropes.

[0026] Further, the silencing adjustment mechanism further includes: an adjustment return spring;

[0027] The adjustment return spring is arranged on the outer periphery of the adjustment transmission shaft. The upper end of the adjustment return spring is fixedly connected to the adjustment fixing member, and the lower end of the adjustment return spring is fixedly connected to the adjustment moving member.

[0028] Further, the silencing adjustment mechanism further includes: an adjustment connecting member, a first adjustment member, and a second adjustment member;

[0029] The adjustment connecting member is rotatably connected to the lower end of the adjustment moving member;

[0030] Multiple groups of the first adjustment members are provided. Multiple groups of first adjustment members are respectively fixedly connected to the inner sides of the silencing arc-shaped plates. Multiple groups of first adjustment members are all provided with inclined groove structures;

[0031] Multiple groups of the second adjustment members are provided. Multiple groups of second adjustment members are respectively fixedly connected to the outer peripheries of the adjustment connecting members. The upper ends of multiple groups of second adjustment members are all arranged inside the inclined grooves of the first adjustment members.

[0032] Compared with the prior art, the present utility model has the following beneficial effects:

[0033] Through the setting of the silencing installation mechanism of the present utility model, external air enters the interior of the fan cabinet through the air inlet filter screen. The silencing arc-shaped plate realizes the buffering and guiding of the air flow, reduces the impact of the air flow, and realizes the silencing effect. At the same time, the porous structure of the silencing orifice plate realizes the consumption of the air flow and realizes the silencing effect. The silencing filling cotton realizes the absorption of the sound generated by the air flow impact, ensures the intake silencing effect of the entire magnetic levitation fan, and improves the use effect of the entire magnetic levitation fan.

[0034] With the setting of the sound insulation adjustment mechanism in the present utility model, the rotation of the rotating shaft of the magnetic levitation fan main body drives the rotation of the adjustment drive shaft. The rotation of the adjustment drive shaft drives the rotation of the adjustment fixing member. The rotation of the adjustment fixing member drives the rotation of the adjustment drive rod. The rotation of the adjustment drive rod drives the rotation of the adjustment driving member. The rotation of the adjustment driving member drives the adjustment moving member to move upward under the action of centrifugal force. The upward movement of the adjustment moving member drives the adjustment connecting member to move upward. The upward movement of the adjustment connecting member drives the second adjustment member to move upward. The upward movement of the second adjustment member drives the first adjustment member to move outward. The outward movement of the first adjustment member drives the sound insulation arc plate to move outward. The outward movement of the sound insulation arc plate approaches the air inlet filter screen. At this time, the space between the sound insulation arc plate and the air flow is reduced, and the impact of the air flow on the sound insulation arc plate is reduced, ensuring the sound insulation effect at high air volume, realizing dynamic adjustment during sound insulation, avoiding excessive blockage of the sound insulation arc plate at low air volume, and at the same time avoiding poor sound insulation effect of the sound insulation arc plate at high air volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is the overall structural schematic diagram of the present utility model.

[0036] Figure 2 is the structural schematic diagram of the second adjustment member of the present utility model.

[0037] Figure 3 is the structural schematic diagram of the sound insulation hole plate of the present utility model.

[0038] Figure 4 is the structural schematic diagram of the sound insulation installation mechanism of the present utility model.

[0039] Figure 5 is the structural schematic diagram of the sound insulation adjustment mechanism of the present utility model.

[0040] In the figure, the corresponding relationship between the component names and the drawing reference numbers is as follows:

[0041] 1, fan cabinet; 101, sound insulation hole plate; 102, sound insulation fixing bolt; 103, sound insulation filling cotton; 2, air inlet filter screen; 3, mounting plate; 4, magnetic levitation fan main body; 5, sound insulation limit sliding groove; 6, sound insulation arc plate; 601, adjustment drive shaft; 602, adjustment fixing member; 603, adjustment moving member; 604, adjustment drive rod; 605, adjustment driving member; 606, adjustment return spring; 607, adjustment connecting member; 608, first adjustment member; 609, second adjustment member. SPECIFIC EMBODIMENTS

[0042] The following further describes in detail the embodiments of the present utility model with reference to the drawings and examples.

[0043] Embodiment 1:

[0044] As shown in the attachedFigure 1 to the appendix Figure 5 as shown below:

[0045] The utility model provides an air inlet silencing structure for a magnetic levitation fan, which includes a fan cabinet body 1, an air inlet filter screen 2, a mounting plate 3, a magnetic levitation fan main body 4, a silencing limiting chute 5, a silencing arc plate 6 and a silencing installation mechanism;

[0046] A total of four groups of air inlet filter screens 2 are provided, and the four groups of air inlet filter screens 2 are respectively fixedly connected to the outer periphery above the fan cabinet body 1;

[0047] The mounting plate 3 is fixedly connected to the upper end inside the fan cabinet body 1;

[0048] The magnetic levitation fan main body 4 is fixedly connected to the lower end of the mounting plate 3;

[0049] A plurality of groups of silencing limiting chutes 5 are provided, and the plurality of groups of silencing limiting chutes 5 are respectively opened above the mounting plate 3;

[0050] A plurality of groups of silencing arc plates 6 are provided, and the plurality of groups of silencing arc plates 6 are respectively slidably connected to the upper part inside the silencing limiting chute 5;

[0051] A plurality of groups of silencing installation mechanisms are provided, and the plurality of groups of silencing installation mechanisms are respectively arranged on the outer sides of the silencing arc plates 6.

[0052] Among them, the silencing installation mechanism includes: a silencing hole plate 101, a silencing fixing bolt 102 and a silencing filling cotton 103;

[0053] A total of two groups of silencing hole plates 101 are provided, and the two groups of silencing hole plates 101 are respectively arranged on the outer sides of the silencing arc plates 6, and both groups of silencing hole plates 101 are porous structures;

[0054] The silencing fixing bolt 102 is threadedly connected above the silencing hole plate 101, and the lower end of the silencing fixing bolt 102 is threadedly connected to the silencing arc plate 6;

[0055] The silencing filling cotton 103 is fixedly connected to the inside of the silencing arc plate 6.

[0056] During use, when the magnetic levitation fan main body 4 starts, at this time, the outside air enters the inside of the fan cabinet body 1 through the air inlet filter screen 2. The silencing arc plate 6 realizes the buffering and guiding of the air flow, reduces the impact of the air flow, realizes the silencing effect. At the same time, the porous structure of the silencing hole plate 101 realizes the consumption of the air flow, realizes the silencing effect, and the silencing filling cotton 103 realizes the absorption of the sound generated by the air flow impact, ensuring the air inlet silencing effect of the entire magnetic levitation fan and improving the use effect of the entire magnetic levitation fan.

[0057] Embodiment 2:

[0058] The utility model provides an air inlet silencing structure for a magnetic levitation fan. On the basis of Embodiment 1, as Figures 1 to 5 shown, it further includes a silencing adjustment mechanism, and the silencing adjustment mechanism is arranged inside the mounting plate 3.

[0059] Among them, the silencing adjustment mechanism includes: an adjustment drive shaft 601, an adjustment fixing part 602, an adjustment moving part 603, an adjustment drive rod 604, an adjustment driving part 605, an adjustment return spring 606, an adjustment connecting part 607, a first adjustment part 608 and a second adjustment part 609;

[0060] The adjustment drive shaft 601 is coaxially and fixedly connected to the upper end of the rotating shaft of the magnetic levitation fan main body 4;

[0061] The adjustment fixing part 602 is fixedly connected to the upper outer periphery of the adjustment drive shaft 601;

[0062] The adjustment moving part 603 is arranged at the lower outer periphery of the adjustment drive shaft 601;

[0063] Two groups of adjustment drive rods 604 are provided, and both groups of adjustment drive rods 604 are link structures hinged to each other. The upper ends of both groups of adjustment drive rods 604 are hinged to the adjustment fixing part 602, and the lower ends of both groups of adjustment drive rods 604 are hinged to the adjustment moving part 603;

[0064] Two groups of adjustment driving parts 605 are provided, and both groups of adjustment driving parts 605 are fixedly connected to the outside of the adjustment drive rod 604 through soft ropes;

[0065] The adjustment return spring 606 is arranged on the outer periphery of the adjustment drive shaft 601. The upper end of the adjustment return spring 606 is fixedly connected to the adjustment fixing part 602, and the lower end of the adjustment return spring 606 is fixedly connected to the adjustment moving part 603;

[0066] The adjustment connecting part 607 is rotatably connected to the lower end of the adjustment moving part 603;

[0067] Multiple groups of first adjustment parts 608 are provided, and multiple groups of first adjustment parts 608 are respectively fixedly connected to the inner side of the silencing arc plate 6. Multiple groups of first adjustment parts 608 are all provided with inclined groove structures;

[0068] Multiple groups of second adjustment parts 609 are provided, and multiple groups of second adjustment parts 609 are respectively fixedly connected to the outer periphery of the adjustment connecting part 607. The upper ends of multiple groups of second adjustment parts 609 are all arranged inside the inclined grooves of the first adjustment parts 608.

[0069] In use, after the main body 4 of the magnetic levitation fan is started, the rotation of the rotating shaft of the main body 4 of the magnetic levitation fan drives the rotation of the adjusting drive shaft 601. The rotation of the adjusting drive shaft 601 drives the rotation of the adjusting fixing member 602. The rotation of the adjusting fixing member 602 drives the rotation of the adjusting drive rod 604. The rotation of the adjusting drive rod 604 drives the rotation of the adjusting driving member 605. Under the action of centrifugal force, the rotation of the adjusting driving member 605 drives the adjusting moving member 603 to move upward. The upward movement of the adjusting moving member 603 drives the adjusting connecting member 607 to move upward. The upward movement of the adjusting connecting member 607 drives the second adjusting member 609 to move upward. The upward movement of the second adjusting member 609 drives the first adjusting member 608 to move outward. The outward movement of the first adjusting member 608 drives the sound-absorbing arc plate 6 to move outward. The outward movement of the sound-absorbing arc plate 6 makes it closer to the air inlet filter 2. At this time, the space between the sound-absorbing arc plate 6 and the air flow is reduced, and the impact of the air flow on the sound-absorbing arc plate 6 is reduced, ensuring the sound insulation effect at a large air volume, realizing the dynamic adjustment during sound insulation, avoiding excessive blockage of the sound-absorbing arc plate 6 at a small air volume, and at the same time avoiding poor sound insulation effect of the sound-absorbing arc plate 6 at a large air volume.

[0070] In this article, the following points need to be noted:

[0071] 1. The drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure. Other structures can refer to the general design.

[0072] 2. Without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0073] The above is only the specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should all be covered by the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. An air inlet silencer structure of a magnetic levitation fan, comprising a fan cabinet (1), an air inlet filter (2), a mounting plate (3), a magnetic levitation fan body (4), a silencer limit slide groove (5), a silencer arc plate (6), a silencer mounting mechanism and a silencer adjustment mechanism; characterized in that: A total of four groups of air inlet filters (2) are provided, and the four groups of air inlet filters (2) are respectively fixedly connected to the upper periphery of the fan cabinet (1); the mounting plate (3) is fixedly connected to the upper end of the inner part of the fan cabinet (1); the magnetic suspension fan body (4) is fixedly connected to the lower end of the mounting plate (3); a plurality of groups of silencer limit slide grooves (5) are provided, and the plurality of groups of silencer limit slide grooves (5) are respectively opened above the mounting plate (3); a plurality of groups of silencer arc plates (6) are provided, and the plurality of groups of silencer arc plates (6) are respectively slidably connected to the upper inner part of the silencer limit slide grooves (5); a plurality of groups of silencer mounting mechanisms are provided, and the plurality of groups of silencer mounting mechanisms are respectively arranged on the outer side of the silencer arc plates (6); and the silencer adjustment mechanism is arranged on the inner side of the mounting plate (3).

2. The air inlet silencing structure of a magnetic levitation fan according to claim 1, characterized in that: The silencer installation mechanism comprises: a silencer hole plate (101), a silencer fixing bolt (102) and a silencer filling cotton (103); the silencer hole plate (101) is provided in two groups, the two groups of silencer hole plates (101) are respectively provided on the outside of the silencer arc plate (6), and the two groups of silencer hole plates (101) are both porous structures; the silencer fixing bolt (102) is threadedly connected to the top of the silencer hole plate (101), and the lower end of the silencer fixing bolt (102) is threadedly connected to the silencer arc plate (6); the silencer filling cotton (103) is fixedly connected to the inside of the silencer arc plate (6).

3. The air inlet silencing structure of a magnetic levitation fan according to claim 1, characterized in that: The noise reduction adjustment mechanism comprises: an adjustment transmission shaft (601), an adjustment fixing member (602) and an adjustment movable member (603); the adjustment transmission shaft (601) is coaxially fixedly connected to the upper end of the rotating shaft of the magnetic suspension fan body (4); the adjustment fixing member (602) is fixedly connected to the upper end of the outer periphery of the adjustment transmission shaft (601); and the adjustment movable member (603) is arranged at the lower end of the outer periphery of the adjustment transmission shaft (601).

4. The air inlet silencing structure of a magnetic levitation fan as claimed in claim 3, characterized in that: The noise reduction adjustment mechanism further comprises: an adjustment transmission rod (604) and an adjustment driving member (605); the adjustment transmission rod (604) is provided in two groups, and the two groups of adjustment transmission rods (604) are both mutually hinged connecting rod structures, the upper ends of the two groups of adjustment transmission rods (604) are both hinged to the adjustment fixing member (602), and the lower ends of the two groups of adjustment transmission rods (604) are both hinged to the adjustment moving member (603); the adjustment driving member (605) is provided in two groups, and the two groups of adjustment driving members (605) are both fixedly connected to the outer side of the adjustment transmission rod (604) by a soft rope.

5. The air inlet silencing structure of a magnetic levitation fan as claimed in claim 4, characterized in that: The muffler adjustment mechanism further comprises: an adjustment return spring (606); the adjustment return spring (606) is arranged on the outer periphery of the adjustment transmission shaft (601); the upper end of the adjustment return spring (606) is fixedly connected to the adjustment fixing member (602); and the lower end of the adjustment return spring (606) is fixedly connected to the adjustment moving member (603).

6. The air inlet silencing structure of a magnetic levitation fan as claimed in claim 5, characterized in that: The silencer adjustment mechanism also includes: an adjustment connecting member (607), a first adjustment member (608) and a second adjustment member (609); the adjustment connecting member (607) is rotatably connected to the lower end of the adjustment movable member (603); the first adjustment member (608) is provided in multiple groups, and the multiple groups of first adjustment members (608) are respectively fixedly connected to the inner side of the silencer arc plate (6), and the multiple groups of first adjustment members (608) are all provided with an inclined groove structure; the second adjustment member (609) is provided in multiple groups, and the multiple groups of second adjustment members (609) are respectively fixedly connected to the outer periphery of the adjustment connecting member (607), and the upper ends of the multiple groups of second adjustment members (609) are all arranged inside the inclined groove of the first adjustment member (608).

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