Blade anti-vibration mounting structure of multi-blade centrifugal fan

Abstract

The utility model belongs to the technical field of centrifugal fans, and particularly relates to a multi-blade centrifugal fan blade anti-vibration installation structure which comprises a machine shell, an inner stator and an outer rotor, the inner stator and the outer rotor are installed in the machine shell, a plurality of fan blades are arranged in the machine shell and evenly distributed around the outer rotor, and the inner stator and the outer rotor are arranged in the machine shell. A fixing plate is fixed to the middle of the fan blade and fixed to the outer side wall of the outer rotor. The fixing plate is connected with the outer rotor and the fan blades and drives the fan blades to rotate, the damping rings are arranged on the two sides of the fixing plate and fixedly clamped with the fan blades, the fan blades are prevented from vibrating, and the fixing rings on the two sides of the fan blades prevent the two ends of the fan blades from vibrating. Meanwhile, the mounting stability of the fan blade is ensured, the noise reduction coating on the surface of the fixing ring can absorb noise generated by air flowing, so that the noise reduction effect is achieved, and the fan blade is simple in structure and good in vibration and noise reduction effect.

Description

TECHNICAL FIELD

[0001] The utility model belongs to centrifugal fan technical field, concretely relates to a kind of multi-blade centrifugal fan blade vibration-proof mounting structure. BACKGROUND

[0002] Centrifugal fan is a kind of fluid machinery that relies on input mechanical energy to improve gas pressure and discharge gas, its working principle is to accelerate gas by high-speed rotating impeller, so that gas is treated as incompressible fluid and discharged;

[0003] According to the Patent (Announcement) No. CN207278579U, a centrifugal fan volute, a centrifugal fan and an air conditioner are disclosed, which disclose the technical scheme of "including the flow guide shell of cylindrical structure, first side plate and second side plate, the inside of flow guide shell is provided with accommodating cavity, flow guide shell is provided with air outlet, air outlet is communicated with accommodating cavity, opposite sides of flow guide shell are connected with first side plate and second side plate respectively, first side plate and / or second side plate is provided with air inlet, air inlet is communicated with accommodating cavity, air inlet is in the shape of horn mouth shape with gradually increasing caliber from inside to outside" and the like; it has the technical effects of "the centrifugal fan volute, the centrifugal fan and the air conditioner of the utility model, the blowing area of air outlet is wider, the air outlet efficiency is improved, the air volume of inhaled air is increased, the efficiency of centrifugal fan is improved, and the noise is reduced";

[0004] However, when the fan blade works, due to the vibration of the blade and the air flow, a large noise is generated, which affects the working environment, and the existing centrifugal fan blade lacks corresponding shockproof structure.

[0005] To solve the above problems, a multi-blade centrifugal fan blade vibration-proof mounting structure is proposed in the present application. UTILITY MODEL CONTENTS

[0006] To solve the problems proposed in the above background art, the utility model provides a multi-blade centrifugal fan blade vibration-proof mounting structure, which has the characteristics of stable and firm and low noise.

[0007] To achieve the above purpose, the utility model provides the following technical scheme: a multi-blade centrifugal fan blade vibration-proof mounting structure, comprising a casing and an inner stator and an outer rotor mounted in the casing, the inside of the casing is provided with a plurality of fan blades, the fan blades are uniformly distributed around the outer rotor, the middle part of the fan blade is fixed with a fixed plate, the fixed plate is fixed on the outer side wall of the outer rotor, the both sides of the fixed plate are provided with a damping ring, the damping ring is annular columnar structure, the surface of the damping ring is provided with a clamping groove matched with the fan blade at the position corresponding to the fan blade, and the damping ring and the fan blade are clamped together.

[0008] As a kind of multi-blade centrifugal fan blade vibration-proof mounting structure optimization of the utility model, the both ends of the fan blade are provided with fixed ring, the fixed ring is annular semicircular column structure, recess matched with the end face of the fan blade is formed on the surface of the fixed ring, the fixed ring and the fan blade are engaged, and fixed by screw.

[0009] As a kind of multi-blade centrifugal fan blade vibration-proof mounting structure optimization of the utility model, the both sides of the fan blade are arc surface.

[0010] As a kind of multi-blade centrifugal fan blade vibration-proof mounting structure optimization of the utility model, the inside of the damping ring is embedded with support steel ring away from the side of the fan blade.

[0011] As a kind of multi-blade centrifugal fan blade vibration-proof mounting structure optimization of the utility model, the fan blade is plate structure, the surface of the connecting place of the fan blade and the damping ring is frosted structure.

[0012] As a kind of multi-blade centrifugal fan blade vibration-proof mounting structure optimization of the utility model, the fixed plate and the outer rotor are formed with several reinforcing plates.

[0013] As a kind of multi-blade centrifugal fan blade vibration-proof mounting structure optimization of the utility model, the outside of the fixed ring is sprayed with sound-absorbing paint.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] In the utility model, the fixed plate connects outer rotor and several fan blades, drives fan blade to rotate, damping ring is arranged on the both sides of fixed plate and is mutually engaged and fixed with several fan blades, prevents fan blade from vibrating, fixed ring on the both sides of fan blade prevents the both ends of fan blade from vibrating, simultaneously ensures the stability of fan blade installation, noise reduction coating on the surface of fixed ring can absorb noise generated by air flow, to reach noise reduction effect, the utility model has simple structure, and vibration and noise reduction effect is good. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings are included to provide a further understanding of the utility model, and constitute part of the specification, and are used to explain the utility model together with embodiments of the utility model, and do not constitute limitation to the utility model.In the drawings:

[0018] Figure 1 It is structural schematic diagram of the utility model;

[0019] Figure 2 It is perspective structural schematic diagram of the utility model;

[0020] Figure 3 It is a three-dimensional structure schematic view of the utility model;

[0021] Figure 4 It is a front view structure schematic view of the utility model;

[0022] In the figure: 1, the casing; 2, inner stator; 3, outer rotor; 4, fan blade; 5, fixed plate; 51, reinforcing plate; 6, damping ring; 7, fixed ring. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0024] Embodiment 1

[0025] As Figure 2 shown;

[0026] A multi-vane centrifugal fan blade vibration-proof mounting structure, comprising a casing 1 and an inner stator 2 and an outer rotor 3 mounted in the casing 1;

[0027] In the embodiment: according to the public announcement number: CN207278579U, a centrifugal fan volute, a centrifugal fan and an air conditioner are disclosed, and the technology discloses a "guide shell comprising a cylindrical structure, a first side plate and a second side plate, an accommodating cavity is arranged in the guide shell, an air outlet is arranged on the guide shell, the air outlet is communicated with the accommodating cavity, the opposite sides of the guide shell are connected with the first side plate and the second side plate respectively, an air inlet is arranged on the first side plate and / or the second side plate, the air inlet is communicated with the accommodating cavity, and the air inlet is in the shape of a horn mouth with the diameter gradually increasing from inside to outside" technical scheme; has "the centrifugal fan volute, the centrifugal fan and the air conditioner of the utility model, the blowing area of the air outlet is wider, the air outlet efficiency is improved, the air volume of the inhaled air is increased, the efficiency of the centrifugal fan is improved, and the noise is reduced" and other technical effects; to solve the technical problems existing in the prior art, as disclosed in the background art above, "the fan blade produces a large noise during work due to the vibration of the blade and the air flow, which affects the working environment, and the existing centrifugal fan blade lacks a corresponding shockproof structure", in combination with use, this problem is obviously a real problem and is relatively difficult to solve, therefore, to solve this technical problem, the following improvement scheme is proposed.

[0028] Further speaking:

[0029] AsFigures 1 to 4 as shown;

[0030] In combination with the above:

[0031] The inside of the shell 1 of the multi-blade centrifugal fan blade anti-vibration mounting structure is provided with a plurality of fan blades 4, which are uniformly distributed around the outer rotor 3. The middle part of the fan blade 4 is fixed with a fixed plate 5, and the fixed plate 5 is fixed on the outer side wall of the outer rotor 3. The two sides of the fixed plate 5 are provided with a damping ring 6, which is an annular column structure. The surface of the damping ring 6 is provided with a clamping groove matched with the fan blade 4 at the position corresponding to the fan blade 4, and the damping ring 6 and the fan blade 4 are clamped together.

[0032] In this embodiment: when installing, the fan blade 4 and the fixed plate 5 are installed on the outer side wall of the outer rotor 3, and then the damping ring 6 is inserted from both ends of the fan blade 4 to the middle part of the fan blade 4. The clamping groove of the damping ring 6 and the fan blade 4 are fixed by engineering glue. When the outer rotor 3 rotates, it drives the fan blade 4 and the fixed plate 5 to rotate. The damping ring 6 has damping to absorb the vibration generated by the fan blade 4, thereby reducing the vibration and noise of the fan blade 4.

[0033] Further more:

[0034] In an optional embodiment, the two ends of the fan blade 4 are provided with a fixed ring 7, which is an annular semicircular column structure. The surface of the fixed ring 7 is provided with a groove matched with the end face of the fan blade 4. The fixed ring 7 and the fan blade 4 are clamped together and fixed by screws.

[0035] In this embodiment: through this design, the fixed ring 7 limits the two ends of the fan blade 4, improves the installation accuracy and stability of the fan blade 4, and the fan blade 4 and the fixed ring 7 are fixed firmly by screws, avoiding the fixed ring 7 from falling off the fan blade 4 when rotating.

[0036] Further more:

[0037] In an optional embodiment, the two sides of the fan blade 4 are arc surfaces.

[0038] In this embodiment: through this design, the arc surface of the fan blade 4 facilitates airflow through the fan blade 4, avoiding noise when wind passes through the fan blade 4.

[0039] Further more:

[0040] In an optional embodiment, the inside of the damping ring 6 away from the fan blade 4 is embedded with a supporting steel ring.

[0041] In the embodiment, the inner part of the damping ring 6 has a steel ring to support the fan blade 4, improve the stability of the fan blade 4, and improve the strength of the damping ring 6.

[0042] Further,

[0043] In an optional embodiment, the fan blade 4 is a plate structure, and the connection surface between the fan blade 4 and the damping ring 6 is a frosted structure.

[0044] In the embodiment, the frosted structure on the surface of the fan blade 4 facilitates the determination of the installation position of the damping ring 6, improves the contact surface between the fan blade 4 and the damping ring 6, and facilitates the connection of the fan blade 4 and the damping ring 6 through engineering glue.

[0045] Further,

[0046] In an optional embodiment, a plurality of reinforcing plates 51 are formed between the fixed plate 5 and the outer rotor 3.

[0047] In the embodiment, the reinforcing plates 51 between the outer rotor 3 and the fixed plate 5 improve the stability of the installation of the fixed plate 5.

[0048] In an optional embodiment, the outer side of the fixed ring 7 is sprayed with sound-absorbing paint.

[0049] In the embodiment, the sound-absorbing paint on the fixed ring 7 can absorb the noise generated by air flow, thereby reducing the noise of the centrifugal fan and the blade, and the sound-absorbing paint is RLHY-51 soundproofing and noise reduction paint composed of a nano multi-layer structure material.

[0050] The working principle and use process of the utility model are as follows: during installation, the fan blade 4 and the fixed plate 5 are installed on the outer side wall of the outer rotor 3, then the damping ring 6 is inserted into the middle part of the fan blade 4 from both ends of the fan blade 4, the clamping groove of the damping ring 6 and the fan blade 4 are fixed through engineering glue, the frosted structure on the surface of the fan blade 4 facilitates the determination of the installation position of the damping ring 6, improves the contact surface between the fan blade 4 and the damping ring 6, and facilitates the connection of the fan blade 4 and the damping ring 6 through engineering glue, when the outer rotor 3 rotates, the fan blade 4 and the fixed plate 5 are driven to rotate, the damping ring 6 has damping to absorb the vibration generated by the fan blade 4, thereby reducing the vibration and noise of the fan blade 4, the fixed ring 7 limits the two ends of the fan blade 4, improves the installation accuracy and stability of the fan blade 4, and the fan blade 4 and the fixed ring 7 are fixed firmly through screws, so that the fixed ring 7 is prevented from falling off the fan blade 4 during rotation.

[0051] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application have been described in detail, for the skilled in the art, it still can be modified, or for the equivalent replacement of part of the technical features of the technical solutions recorded in the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included within the scope of the present application.

Claims

1. A multi-blade centrifugal fan blade anti-vibration mounting structure, comprising a housing (1) and an inner stator (2) and an outer rotor (3) mounted in the housing (1), characterized in that: A plurality of fan blades (4) are arranged inside the housing (1), and the fan blades (4) are evenly distributed around the outer rotor (3). A fixing plate (5) is fixed to the middle of the fan blades (4), and the fixing plate (5) is fixed to the outer side wall of the outer rotor (3). Damping rings (6) are arranged on both sides of the fixing plate (5), and the damping ring (6) is an annular columnar structure. A slot matching the fan blades (4) is provided on the surface of the damping ring (6) at a position corresponding to the fan blades (4), and the damping ring (6) and the fan blades (4) are engaged with each other.

2. The anti-vibration mounting structure for multi-blade centrifugal fan blades according to claim 1, characterized in that: A fixing ring (7) is provided at both ends of the fan blade (4). The fixing ring (7) is an annular semi-cylindrical structure. A groove matching the end face of the fan blade (4) is provided on the surface of the fixing ring (7). The fixing ring (7) and the fan blade (4) are engaged with each other and fixed to each other by screws.

3. The anti-vibration mounting structure for multi-blade centrifugal fan blades according to claim 1, characterized in that: Both sides of the fan blade (4) are arc-shaped surfaces.

4. The anti-vibration mounting structure for multi-blade centrifugal fan blades according to claim 1, characterized in that: A supporting steel ring is embedded in the damping ring (6) on a side away from the fan blade (4).

5. The anti-vibration mounting structure for multi-blade centrifugal fan blades according to claim 1, characterized in that: The fan blade (4) is a plate-shaped structure, and the surface of the connection between the fan blade (4) and the damping ring (6) is a frosted structure.

6. The anti-vibration mounting structure for multi-blade centrifugal fan blades according to claim 1, characterized in that: A plurality of reinforcing plates (51) are formed between the fixing plate (5) and the outer rotor (3).

7. The anti-vibration mounting structure for multi-blade centrifugal fan blades according to claim 2, characterized in that: The outer side of the fixing ring (7) is sprayed with sound-absorbing paint.

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