Radial sheet type silencing cover structure
By radial silencer radial in the silence cover of the air-cooled motor, the problem of the silence cover weakening when increasing the sound absorption area in the prior art is solved, and the effect of good overall rigidity and large sound absorption area is achieved.
Patent Information
- Application Number
- CN202421774948.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-07-25
AI Technical Summary
When the sound absorption area of existing air-cooled motors increases, it is easy to cause rigidity to weaken, vibration and deformation.
The radial sheet silence cover structure is adopted. By radial silencer radial silencer radially arranged in the silence cover, the radial space between the fan outer circle and the end cover outer circle is fully utilized, and the length of the radial silencer is increased, thereby increasing the sound absorption area without increasing the axial length of the silence cover.
It achieves good overall rigidity and has a large sound absorption area, which improves the noise reduction effect and avoids vibration and deformation problems caused by axial lengthening of the sound silencer.
Smart Images
Figure CN222827083U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of air-cooled motors, and particularly relates to a radial sheet type silencer cover structure. Background Art
[0002] In order to reduce the noise of air-cooled motors, silencers are usually installed at the air inlet and outlet of the motor. The silencer material of the silencer is usually arranged in a cylindrical or conical shape to form a curved silencer structure. Fig.10 and Fig.11 As shown (cylindrical arrangement).
[0003] The curved path silencer structure requires increasing the axial length of the silencer cover to achieve a curved path and sufficient sound-absorbing area, and the area of the sound-absorbing material on the sound (airflow) propagation path mainly depends on the axial length extension. When the axial length extension is too large, the rigidity of the silencer cover is weakened, which is prone to vibration, deformation and other problems. Utility Model Content
[0004] In order to solve the above problems existing in the prior art, the purpose of the utility model is to provide a radial sheet type silencer cover structure with good overall rigidity and large sound absorption area.
[0005] The technical solution adopted by the utility model is:
[0006] A radial plate type silencer structure comprises a silencer tube mounted on an end shield end plate of a motor fan, the other end of the silencer tube is connected to the silencer end plate, a plurality of radial silencer plates are radially arranged in the silencer, and an air inlet is arranged in the area between adjacent radial silencer plates on the silencer tube.
[0007] For motors that need noise reduction, it is often a 2-pole motor. The size of the fan (air inlet) of this type of motor is small, and the diameter of the fan outer circle is quite different from that of the end cover outer circle. The utility model adopts a radial plate-type silencer structure, which can make full use of the radial space between the fan outer circle and the end cover outer circle, so that the radial length of the radial silencer plate can be longer, the sound absorption area of the noise propagation path is increased, and the noise reduction effect is improved. In addition, by arranging a radial plate-type silencer structure with a sufficiently long radial length, there is no need to increase the axial length of the silencer cover to achieve a curved path and sufficient sound absorption area, so that when the axial length of the radial silencer plate is short, the silencer cover has better rigidity and is not easy to vibrate or deform. The plate-type silencer cover structure proposed in the utility model has the characteristics of good overall rigidity and large sound absorption area, and is another effective fan air inlet silencer structure that is different from the traditional curved silencer structure.
[0008] As a preferred solution of the utility model, an annular sound-absorbing sheet is further arranged on the inner side of the end plate of the sound-absorbing cover, which can further improve the sound-absorbing effect of the utility model.
[0009] As a preferred solution of the utility model, the radial silencer includes a support plate, which is arranged radially along the silencer hood tube, sound-absorbing material is provided on at least one side of the support plate, and a surface material is provided on the sound-absorbing material, baffles are connected to both sides of the support plate, the baffles and the surface material surround the sound-absorbing material, a mounting plate is fixed on the support plate, and the mounting plate is connected to at least one of the silencer hood tube, the silencer hood end plate and the end hood end plate.
[0010] As a preferred solution of the utility model, the radial silencer includes a support plate, which is arranged radially along the silencer hood tube, sound-absorbing material is provided on at least one side of the support plate, and surface material is provided on the sound-absorbing material, baffles are connected to both sides of the support plate, the baffles and the surface material surround the sound-absorbing material, and the support plate is connected to at least one of the silencer hood tube, the silencer hood end plate and the end hood end plate.
[0011] As a preferred solution of the utility model, the cross-sectional shape of the silencer hood is circular, conical or polygonal.
[0012] As a preferred solution of the utility model, the silencer hood is connected to the end shield end plate through a flange or is connected to the end shield end plate by being sleeved on the end shield end plate.
[0013] As a preferred solution of the utility model, the radial dimensions of the radial silencers are unequal, and radially long radial silencers and radially short radial silencers are arranged at intervals to make the airflow channel more uniform.
[0014] As a preferred solution of the utility model, the outer side of the radial silencer sheet extends out of the silencer cover or is located inside the silencer cover.
[0015] As a preferred solution of the utility model, the radial silencer sheet is in the shape of a rectangle, a parallelogram or a trapezoid.
[0016] As a preferred solution of the utility model, the air inlet of the silencer hood is provided with a mesh window.
[0017] The beneficial effects of the utility model are:
[0018] 1. The utility model adopts a radial sheet type silencer structure, which can make full use of the radial space between the outer circle of the fan and the outer circle of the end cover of the 2-pole motor, and can make the radial length of the radial silencer longer, increase the sound absorption area of the noise propagation path, and improve the noise reduction effect.
[0019] 2. The utility model arranges a radial sheet silencer structure with a sufficiently long radial length, and there is no need to increase the axial length of the silencer cover to achieve a curved path and a sufficient sound absorption area. Therefore, when the axial length of the radial silencer sheet is short, the silencer cover has better rigidity and is not prone to vibration and deformation. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a structural schematic diagram of the utility model when the flange is installed;
[0021] Figure 2 yes Figure 1 Schematic diagram of the structure in the middle AA direction;
[0022] Figure 3 It is a structural schematic diagram of the utility model when the cylinder is installed;
[0023] Figure 4 It is a schematic diagram of the structure of a radial silencer with a mounting plate;
[0024] Figure 5 yes Figure 4 Schematic diagram of the structure in the middle BB direction;
[0025] Figure 6 It is a schematic diagram of the structure when the radial silencer is installed on the end plate of the silencer cover;
[0026] Figure 7 yes Figure 6 Schematic diagram of the structure in the CC direction;
[0027] Figure 8 It is a schematic diagram of the structure of the utility model when the radial silencer sheet extends out of the silencer cover tube;
[0028] Fig. 9 yes Figure 8 Schematic diagram of the structure in the middle DD direction;
[0029] Fig.10 It is a structural schematic diagram of the first curved path noise reduction structure;
[0030] Fig.11 It is a structural schematic diagram of the second curved path silencer structure.
[0031] In the figure: 1-end cover end plate; 2-silencer cover tube; 3-silencer cover end plate; 4-radial silencer plate; 5-annular silencer plate; 6-net window; 21-air inlet; 51-support plate; 52-sound absorbing material; 53-face material; 54-baffle; 55-mounting plate. DETAILED DESCRIPTION
[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.
[0034] like Figures 1 to 9 As shown, the radial plate type silencer structure of this embodiment includes a silencer tube 2 installed on the end shield end plate 1 of the motor fan, the other end of the silencer tube 2 is connected to the silencer end plate 3, a plurality of radial silencer plates 4 are radially arranged inside the silencer, and an air inlet 21 is provided in the area between adjacent radial silencer plates 4 on the silencer tube 2.
[0035] For motors that need noise reduction, 2-pole motors are often used. The fan inlet size of this type of motor is small, and the diameter difference between the outer circle of the fan and the outer circle of the end shield is large. The utility model adopts a radial plate-type silencer structure, which can make full use of the radial space between the outer circle of the fan and the outer circle of the end shield, and can make the radial length of the radial silencer plate 4 longer, increase the sound absorption area of the noise propagation path, and improve the noise reduction effect. In addition, by arranging a radial plate-type silencer structure with a sufficiently long radial length, there is no need to increase the axial length of the silencer cover to achieve a curved path and sufficient sound absorption area, so that when the axial length of the radial silencer plate 4 is short, the silencer cover has better rigidity and is not easy to vibrate or deform. The plate-type silencer cover structure proposed in the utility model has the characteristics of good overall rigidity and large sound absorption area, and is another effective fan inlet silencer structure that is different from the traditional curved silencer structure.
[0036] Furthermore, an annular sound-absorbing sheet 5 is also provided inside the end plate 3 of the sound-absorbing cover. The annular sound-absorbing sheet 5 can further improve the sound-absorbing effect of the utility model.
[0037] The radial muffler sheet 4 adopts an assembly structure: the radial muffler sheet 4 includes a support plate 51, which is arranged along the radial direction of the muffler cover tube 2, and a sound absorbing material 52 is provided on at least one side of the support plate 51, and a face material 53 is provided on the sound absorbing material 52, and baffles 54 are connected to both sides of the support plate 51, and the baffles 54 and the face material 53 surround the sound absorbing material 52, and a mounting plate 55 is fixed on the support plate 51, and the mounting plate 55 is connected to at least one of the muffler cover tube 2, the muffler cover end plate 3 and the end cover end plate 1 by bolts. Figure 5 and Figure 7 As shown, when the radial silencer sheet 4 adopts an assembled structure, it can be made into an independent structure and then assembled on at least one of the silencer cover tube 2, the silencer cover end plate 3 and the end cover end plate 1 by bolts or rivets.
[0038] The radial silencer sheet 4 adopts a welding structure: the radial silencer sheet 4 includes a support plate 51, which is arranged along the radial direction of the silencer cover tube 2, and a sound absorbing material 52 is provided on at least one side of the support plate 51, and a face material 53 is provided on the sound absorbing material 52. Baffles 54 are connected to both sides of the support plate 51, and the baffles 54 and the face material 53 surround the sound absorbing material 52. The support plate 51 is welded to at least one of the silencer cover tube 2, the silencer cover end plate 3 and the end cover end plate 1. Figure 2 As shown, when the radial silencer plate 4 adopts a welding structure, the support plate 51 is first welded to at least one of the silencer cover tube 2, the silencer cover end plate 3 and the end cover end plate 1, and then the baffle 54 is welded, and the silencer material and the surface material 53 are laid.
[0039] The shape of the radial sound-absorbing sheet 4 can be a rectangle (square), a parallelogram (rhombus) or a trapezoid.
[0040] The radial silencer sheet 4 can be single-sided silencer (only one side of the support plate 51 has silencer material) or double-sided silencer (both sides of the support plate 51 have silencer material).
[0041] The silencer cover 2 is provided with an air inlet 21, and the air inlet 21 has a mesh window 6 to meet the protection level requirements of the motor air inlet 21. When the fan air inlet is provided with a mesh window 6, the air inlet 21 of the silencer cover 2 does not need to be provided with a mesh window 6.
[0042] The cross-sectional shape of the muffler cover 2 is circular, conical or polygonal. The muffler cover 2 is axially fixed by a flange (such as Figure 1 As shown), or by providing radial holes on the silencer cover 2 to fix radially (as shown Figure 3 shown).
[0043] like Figure 1 As shown, in order to meet the requirements of radial ventilation area, the radial dimensions of the muffler can be set to unequal lengths to make the airflow channel more uniform. The radial lengths of the radial muffler 4 can be equal or unequal to ensure the wind flow area of the muffler channel.
[0044] like Fig. 9 As shown, the radial silencer sheet 4 can be installed inside the silencer cover 2 or outside the silencer cover 2 .
[0045] The present utility model is not limited to the above-mentioned optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all technical solutions that fall within the scope defined by the claims of the present utility model fall within the protection scope of the present utility model.
Claims
1. A radial sheet type silencer cover structure, characterized in that: The invention comprises a silencer cover cylinder (2) mounted on an end shield end plate (1) of a motor fan, the other end of the silencer cover cylinder (2) being connected to a silencer cover end plate (3), a plurality of radial silencer plates (4) being radially arranged inside the silencer cover, and an air inlet (21) being arranged in an area between adjacent radial silencer plates (4) on the silencer cover cylinder (2).
2. A radial plate type silencer cover structure according to claim 1, characterized in that: An annular sound-absorbing sheet (5) is also provided inside the end plate (3) of the sound-absorbing cover.
3. The radial plate type silencer cover structure according to claim 1, characterized in that: The radial sound-absorbing sheet (4) comprises a support plate (51), the support plate (51) being arranged along the radial direction of the sound-absorbing cover tube (2), a sound-absorbing material (52) being arranged on at least one side of the support plate (51), a surface material (53) being arranged on the sound-absorbing material (52), baffles (54) being connected to both sides of the support plate (51), the baffles (54) and the surface material (53) surrounding the sound-absorbing material (52), a mounting plate (55) being fixed on the support plate (51), and the mounting plate (55) being connected to at least one of the sound-absorbing cover tube (2), the sound-absorbing cover end plate (3) and the end cover end plate (1).
4. The radial plate type silencer cover structure according to claim 1, characterized in that: The radial sound-absorbing sheet (4) comprises a support plate (51), the support plate (51) being arranged along the radial direction of the sound-absorbing cover tube (2), a sound-absorbing material (52) being arranged on at least one side of the support plate (51), a surface material (53) being arranged on the sound-absorbing material (52), baffles (54) being connected to both sides of the support plate (51), the baffles (54) and the surface material (53) surrounding the sound-absorbing material (52), and the support plate (51) being connected to at least one of the sound-absorbing cover tube (2), the sound-absorbing cover end plate (3) and the end cover end plate (1).
5. The radial plate type silencer cover structure according to claim 1, characterized in that: The cross-sectional shape of the silencer cover cylinder (2) is circular, conical or polygonal.
6. The radial plate type silencer cover structure according to claim 1, characterized in that: The silencer hood tube (2) is connected to the end shield end plate (1) via a flange or is connected to the end shield end plate (1) after being sleeved on the end shield end plate (1).
7. The radial plate type silencer cover structure according to claim 1, characterized in that: The radial dimensions of the radial silencer sheets (4) are unequal in length, and radially long radial silencer sheets (4) and radially short radial silencer sheets (4) are arranged at intervals.
8. The radial plate type silencer cover structure according to claim 1, characterized in that: The outer side of the radial silencer sheet (4) extends out of the silencer cover tube (2) or is located inside the silencer cover tube (2).
9. The radial plate type silencer cover structure according to claim 1, characterized in that: The radial sound-absorbing sheet (4) is in the shape of a rectangle, a parallelogram or a trapezoid.
10. A radial plate type silencer structure according to any one of claims 1 to 9, characterized in that: The air inlet (21) of the silencer hood (2) is provided with a mesh window (6).