Silencer and blower device
By designing an S-shaped airflow channel and optimizing the angle and distance of the guide vanes in the silencer, the problems of insufficient structural strength and high energy consumption of traditional silencers under high airflow velocities are solved, achieving the effects of noise reduction and reduced airflow pressure drop.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ATLAS COPCO WUXI COMPRESSOR
- Filing Date
- 2025-05-13
- Publication Date
- 2026-04-24
AI Technical Summary
Traditional silencers suffer from insufficient structural strength, high airflow resistance, high energy consumption, and complex manufacturing processes, which increase costs and affect the normal operation of the blower under high airflow velocity or high flow conditions.
The design employs a first and second guide vane within the housing to form interconnected first, second, and third chambers. Airflow flows along an S-shaped channel, and the airflow resistance and noise are reduced through optimization of the tilt angle and distance ratio of the guide vanes.
It achieves reduced noise while decreasing airflow pressure drop, improving structural strength, and reducing energy consumption, and is suitable for rated gas flow ranges from 5000m3/h to 20000m3/h.
Smart Images
Figure CN224161888U_ABST
Abstract
Description
Technical Field
[0001] The exemplary embodiments of this application generally relate to the field of blower technology, and particularly to a silencer and blower device. Background Technology
[0002] During the venting process, blowers generate strong aerodynamic noise due to the sudden drop in airflow pressure and changes in flow velocity. Under certain high airflow velocity or high flow rate conditions, the structural strength of the silencer may not meet requirements. Some silencers, in order to achieve better noise reduction, have complex internal structures, increasing airflow resistance, resulting in large airflow pressure drops and high energy consumption. Excessive airflow resistance can also affect the normal operation of the blower. Furthermore, the manufacturing process and cost of complex silencers are significantly increased. Utility Model Content
[0003] The purpose of this application is to provide a muffler and blower device to solve or at least partially solve the aforementioned problems and / or other potential problems existing in conventional mufflers.
[0004] This application provides a muffler in a first aspect, comprising: a housing, including a first sidewall and a second sidewall opposite to each other in a first direction, and a bottom wall and a top wall opposite to each other in a second direction perpendicular to the first direction, wherein an air inlet is provided on the bottom wall near the first sidewall, and an air outlet is provided on the top wall near the second sidewall; a first guide plate disposed within the housing, and the first guide plate is located between the air inlet and the air outlet in the first direction, wherein the bottom end of the first guide plate is connected to the bottom wall, the top end of the first guide plate extends toward the top wall and has a first gap with the top wall, and the opposite first and second plate surfaces of the first guide plate face the first sidewall and the second sidewall, respectively; and a second guide plate disposed within the housing, and the second guide plate is located between the first guide plate and the air outlet in the first direction, wherein the top end of the second guide plate is connected to the top wall, the bottom end of the second guide plate extends toward the bottom wall and has a second gap with the bottom wall; the opposite third and fourth plate surfaces of the second guide plate face the first sidewall and the second sidewall, respectively, and the third plate surface is inclined to the second sidewall.
[0005] In some embodiments, the fourth plate surface is inclined toward the second sidewall.
[0006] In some embodiments, the tilt angle of the fourth plate surface relative to the plane of the top wall is greater than the tilt angle of the third plate surface relative to the plane of the top wall.
[0007] In some embodiments, the plane angle between the third plate surface and the top wall falls within the range of 120° to 150°.
[0008] In some embodiments, the top of the second guide vane is located at the edge of the air outlet.
[0009] In some embodiments, both the first plate surface and the second plate surface are perpendicular to the bottom wall.
[0010] In some embodiments, the muffler satisfies at least one of the following: the plane angle between the third plate and the top wall falls within the range of 135° to 145°; the ratio of the first distance to the second distance falls within the range of 0.3 to 0.5; the first distance is the distance between the bottom end of the third plate and the second sidewall; the second distance is the distance between the bottom end of the third plate and the first sidewall; the ratio of the first distance to the third distance falls within the range of 1.3 to 1.5; the third distance is the distance between the top end of the second plate and the bottom end of the third plate in a first direction; and the ratio of the fourth distance to the fifth distance falls within the range of 1.0 to 1.2. The fifth distance is the distance between the second plate surface and the second side wall; the sixth distance is the distance between the first plate surface and the first side wall; the ratio of the sixth distance to the seventh distance falls within the range of 0.5 to 0.7; the sixth distance is the distance between the first plate surface and the center line of the air inlet; the seventh distance is the distance between the center line of the air inlet and the first side wall; the ratio of the third distance to the sixth distance falls within the range of 0.9 to 1.0; or the ratio of the eighth distance to the ninth distance falls within the range of 0.2 to 0.4; the eighth distance is the distance between the top end of the second plate surface and the bottom end of the third plate surface in the second direction; and the ninth distance is the distance between the top wall and the bottom wall.
[0011] In some embodiments, the rated gas flow rate of the silencer falls below 5000 m³ / h. 3 / h to 20000m 3 Within the range of / h.
[0012] In some embodiments, the sixth distance falls within the range of 100mm to 150mm, and / or the third distance falls within the range of 100mm to 150mm, and / or the eighth distance falls within the range of 50mm to 100mm.
[0013] In some embodiments, the housing further includes a third sidewall and a fourth sidewall facing each other in a third direction perpendicular to the first and second directions, the top and bottom ends of the third sidewall being connected to the top and bottom walls respectively, and the top and bottom ends of the fourth sidewall being connected to the top and bottom walls respectively; and the two sides of the first guide plate being connected to the third and fourth sidewalls respectively, and the two sides of the second guide plate being connected to the third and fourth sidewalls respectively.
[0014] In some embodiments, at least one of the inner surface of the housing, the surface of the first baffle, or the surface of the second baffle is covered with a sound-absorbing layer, wherein the sound-absorbing layer includes a sound-absorbing material layer and a porous sound-absorbing plate covering the outside of the sound-absorbing material layer.
[0015] The second aspect of this application provides a blower device, which includes a blower unit and a silencer as described in the first aspect, wherein the vent of the blower unit is connected to the air inlet of the silencer, and the air outlet of the silencer is connected to the outside.
[0016] The silencer of this embodiment can form a first chamber, a second chamber, and a third chamber that are interconnected within the housing by means of a first guide plate and a second guide plate inside the housing. These three chambers form an airflow channel, and noise reduction is achieved as the airflow flows along this channel. Furthermore, because the surface of the first guide plate facing the first sidewall is inclined towards the second sidewall, the resistance of the second guide plate to the airflow is reduced, allowing the airflow to flow smoothly from the first chamber into the second chamber and then into the third chamber, which helps to reduce airflow pressure drop. Attached Figure Description
[0017] The above and other features, advantages, and aspects of the embodiments of this application will become more apparent from the accompanying drawings and the following detailed description. In the drawings, the same or similar reference numerals denote the same or similar elements, wherein:
[0018] Figure 1 A perspective view of a muffler according to some embodiments of this application is shown;
[0019] Figure 2 A top view of a muffler according to some embodiments of this application is shown;
[0020] Figure 3 It shows Figure 2 A cross-sectional view of the central muffler along the AA line.
[0021] Figure 4 A cross-sectional view of a muffler according to some embodiments of this application is shown;
[0022] Figure 5 A perspective view of a partial structure of a blower device according to some embodiments of this application is shown; and
[0023] Figure 6 It shows Figure 5 A magnified view of a section of the muffler.
[0024] Explanation of reference numerals in the attached figures:
[0025] 100-Silencer; 110-Box housing; 111-First side wall; 112-Second side wall; 113-Bottom wall; 114-Top wall; 115-Third side wall; 116-Fourth side wall; 117-Air inlet; 118-Air outlet; 120-First baffle; 121-First plate surface; 122-Second plate surface; 130-Second baffle; 131-Third plate surface; 132-Fourth plate surface; 141-First chamber; 142-Second chamber; 143-Third chamber;
[0026] 200 - Blower unit; 210 - Blower head; 220 - Magnetic levitation motor; 230 - Exhaust pipe; 240 - Bypass valve. Detailed Implementation
[0027] Preferred embodiments of the present application will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.
[0028] This application provides a muffler 100, see [link]. Figures 1 to 3 As shown, the muffler 100 in this embodiment includes a housing 110, a first guide plate 120, and a second guide plate 130.
[0029] The housing 110 includes a first sidewall 111 and a second sidewall 112 opposite to each other in a first direction, and a bottom wall 113 and a top wall 114 opposite to each other in a second direction perpendicular to the first direction. An air inlet 117 is provided on the bottom wall 113 near the first sidewall 111, and an air outlet 118 is provided on the top wall 114 near the second sidewall 112.
[0030] The first direction can be any suitable direction in the transverse direction of the housing 110. For example, such as... Figure 1 and Figure 3 As shown, the box 110 can be rectangular, and the first direction can be the length direction of the box 110, that is... Figure 1 and Figure 3 In the X-axis direction. In this case, the first sidewall 111 and the second sidewall 112 can be two opposite sidewalls of the housing 110 in the X-axis direction.
[0031] In some examples, the second direction can be the height direction of the housing 110, and the bottom wall 113 and the top wall 114 can be two opposing housing walls in the height direction of the housing 110. As an example, such as... Figure 1 and Figure 3 As shown, the bottom wall 113 can be two opposing box walls of the box 110 in the Y-axis direction.
[0032] In some examples, the housing 110 may further include a third sidewall 115 and a fourth sidewall 116 perpendicular to the first and second directions. The top and bottom ends of the third sidewall 115 are connected to the top wall 114 and the bottom wall 113, respectively, and the two side edges of the third sidewall 115 are connected to one side edge of the first sidewall 111 and one side edge of the second sidewall 112, respectively. The top and bottom ends of the fourth sidewall 116 are connected to the top wall 114 and the bottom wall 113, respectively, and the two side edges of the fourth sidewall 116 are connected to the other side edge of the first sidewall 111 and the other side edge of the second sidewall 112, respectively. In this way, a cuboid or approximately cuboid-shaped housing 110 can be formed.
[0033] The third direction can be the direction perpendicular to the first direction in the transverse direction of the housing 110. For example, as shown... Figure 1 and Figure 6 As shown, the third direction can be the width direction of the housing 110, that is... Figure 1 and Figure 6 In the Z-axis direction. In this case, the third sidewall 115 and the fourth sidewall 116 can be two opposite sidewalls of the housing 110 in the Z-axis direction.
[0034] It is understandable that the walls of the housing 110 (e.g., top wall 114, bottom wall 113, side walls 111, 112, 115, 116) usually have a certain thickness.
[0035] The vent 118 can be constructed in any suitable shape, such as a rectangle, a circle, or other shapes. For example, ... Figure 1 and Figure 2 As shown, the air outlet 118 can be rectangular, and a mesh structure can be provided at the air outlet 118 to prevent large foreign objects from entering the housing 110 through the air outlet 118. The air inlet 117 can be constructed in any shape suitable for connection with the air inlet pipe. For example, as Figure 5 As shown, the air inlet 117 can be circular to facilitate connection with a circular pipe.
[0036] A first guide vane 120 is disposed within the housing 110, and is located between the air inlet 117 and the air outlet 118 in a first direction. The bottom end of the first guide vane 120 is connected to the bottom wall 113, and the top end of the first guide vane 120 extends towards the top wall 114 and has a first gap with the top wall 114. The opposing first plate surface 121 and second plate surface 122 of the first guide vane 120 face the first side wall 111 and the second side wall 112, respectively. Thus, a first chamber 141 communicating with the air inlet 117 can be formed between the first guide vane 120 and the first side wall 111. In some examples, the first guide vane 120 is disposed near the air inlet 117.
[0037] In some examples, the housing 110 includes opposing third sidewalls 115 and fourth sidewalls 116, and the two sides of the first guide vane 120 can be connected to the third sidewall 115 and the fourth sidewall 116 respectively. In this way, gaps can be avoided between the first guide vane 120 and the third sidewall 115 or the fourth sidewall 116, which helps to improve the noise reduction effect.
[0038] The second guide plate 130 is disposed inside the housing 110, and is located in a first direction between the first guide plate 120 and the air outlet 118. The top end of the second guide plate 130 is connected to the top wall 114, and the bottom end of the second guide plate 130 extends towards the bottom wall 113 and has a second distance between it and the bottom wall 113. The opposing third plate surface 131 and fourth plate surface 132 of the second guide plate 130 face the first side wall 111 and the second side wall 112 respectively, and the third plate surface 131 is inclined towards the second side wall 112. Thus, the second guide plate 130 can divide the inner cavity space between the first guide plate 120 and the second side wall 112 into a second chamber 142 and a third chamber 143. The second chamber 142 is located between the first chamber 141 and the third chamber 143, and the second chamber 142 communicates with both the first chamber 141 and the third chamber 143. In some examples, the top of the second deflector 130 may be positioned at the edge of the air intake 117.
[0039] In some examples, the housing 110 includes opposing third sidewalls 115 and fourth sidewalls 116, and the two sides of the second deflector 130 can be connected to the third sidewall 115 and the fourth sidewall 116 respectively. In this way, gaps can be avoided between the second deflector 130 and the third sidewall 115 or the fourth sidewall 116, which helps to improve the noise reduction effect.
[0040] The silencer 100 of this embodiment can divide the inner cavity of the housing 110 into a first chamber 141, a second chamber 142, and a third chamber 143 that are interconnected along a first direction by means of a first guide plate 120 and a second guide plate 130. The vented airflow passes through the first chamber 141, the second chamber 142, and the third chamber 143 in turn, forming an airflow channel that is approximately horizontally S-shaped, thereby achieving the purpose of reducing noise and energy consumption. Moreover, since the third plate surface 131 is inclined toward the second side wall 112, the resistance of the second guide plate 130 to the airflow can be reduced, so that the airflow can flow smoothly from the first chamber 141 into the second chamber 142 and then into the third chamber 143, which helps to reduce the airflow pressure drop.
[0041] In some embodiments, in conjunction with Figure 3As shown, the fourth plate surface 132 is inclined toward the second sidewall 112. This allows the outlet 118 to have a gradually expanding gas flow cross section, further reducing the gas flow velocity and thus reducing aerodynamic noise at the outlet 118.
[0042] In some embodiments, continue to combine Figure 3 As shown, the tilt angle of the fourth plate surface 132 relative to the plane containing the top wall 114 (i.e., Figure 3 The angle ∠C is greater than the angle of inclination of the third plate surface 131 relative to the plane containing the top wall 114 (i.e., Figure 3 (∠D). Thus, the longitudinal section of the second guide vane 130 (e.g., with ∠D). Figure 3 The cross-section (with planes parallel to the X and Y axes) is trapezoidal. This shape of the second guide vane 130 has high structural strength and stability, can withstand the impact of relatively high-pressure airflow, and helps to improve the service life of the muffler 100.
[0043] In some embodiments, in conjunction with Figure 3 As shown, the planar angle ∠B between the plate surface 131 and the top wall 114 falls within the range of 130° to 150°. Further, it is preferable that ∠B falls within the range of 135° to 145°. Within this angle range, not only can a good noise reduction effect be achieved, but the airflow pressure drop can also be significantly reduced, thus achieving the goal of balancing noise reduction and reduced airflow pressure drop. When ∠B continues to increase, the noise reduction effect decreases, and the pressure drop decreases; when ∠B continues to decrease, the pressure drop increases, and energy consumption increases. It should be noted that the planar angle falling within the range of 130° to 150° or 135° to 145° should be understood to include planar angles equal to 130°, 135°, 145°, and 150°, as well as any angle between 130° and 150°. In some examples, this planar angle can be 139°, 140°, or 141°, etc.
[0044] In some embodiments, both the first plate surface 121 and the second plate surface 122 are perpendicular to the bottom wall 113. That is, the first guide plate 120 is perpendicular to the bottom wall 113. This helps to improve the noise reduction effect. In some examples, the thickness of the first guide plate 120 can be the same.
[0045] In some embodiments, in conjunction with Figure 4As shown, the sixth distance L6 is the distance between the centerline of the first plate surface 121 and the air inlet 117, and the seventh distance L7 is the distance between the centerline of the air inlet and the first side wall 111. Preferably, the ratio of the sixth distance L6 to the seventh distance L7 falls within the range of 0.5 to 0.7. This distance ratio reasonably controls the time and airflow pressure when the airflow enters the first chamber 141 and impacts the first guide plate 120 and enters the second chamber 142. Within this distance ratio range, the third plate surface 131 is positioned in the direction of the airflow. The high-speed airflow entering the chamber passes through an appropriate distance and reflects and interferes with the first guide plate 120, the first side wall 111, the top wall 114, and the third plate surface 131, reducing mid-to-low frequency noise. At the same time, it avoids abrupt changes in the flow direction of the high-speed airflow after entering the chamber, effectively reducing pressure loss and lowering the back pressure at the outlet of the vent valve, thus improving the performance of the venting system. When the distance ratio continues to increase, the noise reduction effect will be reduced and the noise during discharge will be increased; when the distance ratio continues to decrease, the voltage drop will increase and the overall energy consumption during discharge will be increased.
[0046] The position of the first guide vane 120 within the housing 110 affects the airflow inlet resistance and noise reduction effect. In some embodiments, in conjunction with Figure 4 As shown, the fourth distance L4 is the distance between the second plate surface 132 and the second sidewall 112 of the first guide plate 120, and the fifth distance L5 is the distance between the first plate surface 121 and the first sidewall 11 of the first guide plate 120. Preferably, the ratio of the fourth distance L4 to the fifth distance L5 falls within the range of 1.0 to 1.2. This distance ratio reasonably limits the proportion of the first chamber 141, reducing airflow pressure drop and energy consumption while ensuring the noise reduction effect of airflow.
[0047] The third surface 131 of the second guide plate 130 is a guiding surface for airflow transitioning from the first chamber 141 to the second chamber 142. Its relative position within the silencer cavity also affects the noise reduction effect and pressure drop of the airflow. In some embodiments, in conjunction with Figure 4 As shown, the first distance L1 is the distance between the bottom end of the third plate surface 131 and the second side wall 112, and the second distance L2 is the distance between the bottom end of the third plate surface 131 and the first side wall 111. Preferably, the ratio of the first distance L1 to the second distance L2 falls within the range of 0.3 to 0.5. This distance ratio reasonably limits the proportion of the third chamber 143, reducing airflow pressure drop and energy consumption while ensuring the noise reduction effect of airflow.
[0048] In some embodiments, in conjunction with Figure 4 As shown, the third distance L3 is the distance between the top end of the second plate surface 122 and the bottom end of the third plate surface 131 in the first direction. It can be understood that the third distance L3 is the distance along the first direction. For example, it can be determined that the top end of the first guide plate 120 is at... Figure 4The first projection on the X-axis (or another coordinate axis extending along the first direction) can also determine the bottom end of the second guide vane 130 at... Figure 4 The second projection on the X-axis. The distance between the first projection and the second projection can be understood as the third distance L3. Preferably, the ratio of the first distance L1 to the third distance L3 falls within the range of 1.3 to 1.5. Within this distance ratio, the airflow is guided from a smaller transition guide space to a larger exhaust space, the airflow velocity is significantly reduced, further reducing aerodynamic noise and reasonably adjusting the pressure change when the airflow passes through.
[0049] In some embodiments, in conjunction with Figure 4 As shown, the eighth distance L8 is the distance between the top end of the second plate surface 122 and the bottom end of the third plate surface 131 in the second direction, and the ninth distance L9 is the distance between the top wall and the bottom wall. For example, it can be determined that the top end of the first guide plate 120 is at... Figure 4 The third projection on the Y-axis (or other coordinate axes extending along the second direction) can also determine the bottom end of the second guide vane 130. Figure 4 The fourth projection on the Y-axis. The eighth distance L8 can be understood as the distance between the third and fourth projections. Preferably, the ratio of the eighth distance L8 to the ninth distance L9 falls within the range of 0.2 to 0.4. This distance ratio limits the longitudinal flow cross-sectional area of the airflow through the second chamber 142, and reasonably adjusts the pressure change and airflow velocity when the airflow passes through. When this distance ratio continues to increase, the noise reduction effect decreases; when this distance ratio continues to decrease, the pressure drop increases sharply.
[0050] In some embodiments, the rated gas flow rate of the silencer 100 falls below 5000 m³ / h. 3 / h to 20000m 3 Within the range of / h. Therefore, the silencer 100 can be used with blowers whose rated gas flow rate falls within the above range. The following will assume that the rated gas flow rate of the silencer 100 falls within 5000m³ / h. 3 / h to 20000m 3 Taking the range of / h as an example, the size and proportion of the silencer 100 are described exemplarily, but it should not be construed as the rated gas flow of the silencer 100 being limited to the range mentioned above, nor should it be construed as the size and proportion of the silencer 100 being limited to the range shown below.
[0051] In some embodiments, the first distance L1 can fall within the range of 150mm to 200mm, in which case the second distance L2 can fall within the range of 300mm to 670mm. In some embodiments, the second distance L2 can fall within the range of 400mm to 450mm, in which case the first distance L1 can fall within the range of 120mm to 225mm. As an example, the ratio of the first distance L1 to the second distance L2 can be 0.3, 0.4, or 0.5, etc., and the first distance L1 can be, for example, 120mm, 150mm, 160mm, 170mm, 180mm, 190mm, 200mm, or 225mm, etc., and the second distance L2 can be 300mm, 375mm, 400mm, 425mm, 430mm, 475mm, 500mm, or 670mm, etc.
[0052] In some embodiments, if the first distance L1 falls within the range of 150mm to 200mm, the third distance L3 can fall within the range of 100mm to 155mm. In some embodiments, the third distance can fall within the range of 100mm to 150mm. As an example, the ratio of the first distance L1 to the third distance L3 can be 1.3, 1.4, or 1.5. The third distance L3 can be 100mm, 120mm, 132mm, 140mm, or 150mm, etc.
[0053] In some examples, the fourth distance L4 can fall within the range of 300mm to 350mm. In this case, the fifth distance L5 can fall within the range of 250mm to 350mm. In some examples, the fifth distance L5 can fall within the range of 250mm to 300mm. In this case, the fourth distance L4 can fall within the range of 250mm to 360mm. As an example, the ratio of the fourth distance L4 to the fifth distance L5 can be 1.0, 1.1, or 1.2. The fourth distance L4 can be 250mm, 270mm, 290mm, 300mm, 322mm, 330mm, or 350mm, etc., and the fifth distance L5 can be 250mm, 265mm, 275mm, 290mm, 300mm, or 320mm, etc.
[0054] In some examples, if the sixth distance L6 falls within the range of 100mm to 150mm, the seventh distance L7 can fall within the range of 140mm to 300mm. If the seventh distance L7 falls within the range of 200mm to 250mm, the sixth distance L6 can fall within the range of 100mm to 175mm. As an example, the ratio of the sixth distance L6 to the seventh distance L7 can be 0.5, 0.6, or 0.7. The sixth distance L6 can be 100mm, 130mm, 135mm, 140mm, 145mm, 150mm, or 170mm, etc., and the seventh distance L7 can be 200mm, 210mm, 220mm, 230mm, 240mm, or 250mm, etc.
[0055] In some embodiments, in conjunction with Figure 4 As shown, the ratio of the third distance L3 to the sixth distance L6 falls within the range of 0.8 to 1.0. In some examples, if the third distance L3 falls within the range of 100mm to 150mm, the sixth distance L6 can fall within the range of 80mm to 150mm. As an example, the ratio of the third distance L3 to the sixth distance L6 can be 0.8, 0.9, or 1.0.
[0056] In some examples, the eighth distance L8 falls within the range of 50mm to 100mm, and the ninth distance L9 can fall within the range of 125mm to 500mm. In some examples, the eighth distance L8 falls within the range of 30mm to 100mm, and the ninth distance L9 can fall within the range of 150mm to 250mm. As an example, the ratio of the eighth distance L8 to the sixth distance L9 can be 0.2, 0.3, or 0.4, the eighth distance L8 can be 50mm, 60mm, 64mm, 70mm, 80mm, or 90mm, and the ninth distance L9 can be 150mm, 170mm, 190mm, 200mm, 210mm, 230mm, or 250mm.
[0057] It is understandable that the rated gas flow rate of the silencer 100 falls below 5000m³. 3 / h to 20000m 3 Within the range of / h, the silencer 100 is designed to conform to the above size range or the above proportion, with noise absorption of 35-45dB and pressure drop of 40-60mbar, which can achieve the purpose of balancing the silencing effect and reducing airflow pressure drop energy consumption.
[0058] In some embodiments, the inner surface of the enclosure 110 may be covered with a sound-absorbing layer. The sound-absorbing layer may include a sound-absorbing material layer and a porous sound-absorbing plate covering the outer side of the sound-absorbing material layer. Specifically, the sound-absorbing material layer may cover the inner surface of the enclosure 110, and the porous sound-absorbing plate may cover the outer side of the sound-absorbing material layer. The sound-absorbing material layer can absorb the energy of sound waves to reduce noise intensity. The porous sound-absorbing plate not only reduces noise but also prevents the sound-absorbing material from being impacted by airflow, which helps to delay the aging of the sound-absorbing material. As an example, the sound-absorbing material layer can be formed from sound-absorbing materials such as sound-absorbing cotton, and the porous sound-absorbing plate can be formed from, for example, a porous steel plate. Of course, the specific materials of the sound-absorbing material layer and the porous sound-absorbing plate described above are merely exemplary, and this application embodiment does not specifically limit the specific materials of the sound-absorbing material layer and various sound-absorbing plates. Alternatively or additionally, the surface of the first guide plate 120 or the surface of the second guide plate 130 may also be covered with a sound-absorbing layer to further improve the sound absorption effect. The thickness of the sound-absorbing layer, the first guide plate 120, and the second guide plate 130 only needs to meet the strength requirements; this application embodiment does not impose specific limitations.
[0059] This application also provides a blower device, see [link to relevant documentation]. Figure 5 and Figure 6 As shown, the blower device of this application embodiment includes a blower unit 200 and a silencer 100 as described in any of the above embodiments. The vent of the blower unit 200 can be connected to the air inlet 117 of the silencer 100, and the air outlet 118 of the silencer 100 can be connected to the outside. Here, "outside" refers to the outside of the silencer 100. Of course, the outside of the silencer 100 can also be the outside of the blower device. For example, when the blower unit 200 performs a gas venting operation, the gas can be discharged to the silencer 100 through the vent of the blower unit 200. After being silenced by the silencer 100, the gas can be discharged outside the blower device through the air outlet 118 of the silencer 100. Since the silencer 100 can achieve both silencing effect and reduced airflow pressure drop, the blower device using this silencer 100 has low noise and low energy consumption. The size of the air inlet 117 of the silencer 100 can be adjusted according to the vent of the blower unit 200, and no specific limitation is made here.
[0060] In some examples, the blower unit 200 may include a blower head 210 and a magnetic levitation motor 220 drivenly connected to the blower head 210. The exhaust end of the blower head 210 may be connected to an exhaust pipe 230, and the vent of the exhaust pipe 230 may be connected to the air inlet 117 through a bypass valve 240.
[0061] It should be noted that the above-described blower device is merely exemplary, and in practical applications, the blower device can also adopt any other suitable structure. The various embodiments of this application have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical applications, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.
Claims
1. A silencer, characterized in that, include: The housing includes a first sidewall and a second sidewall opposite to each other in a first direction, and a bottom wall and a top wall opposite to each other in a second direction perpendicular to the first direction. An air inlet is provided on the bottom wall near the first sidewall, and an air outlet is provided on the top wall near the second sidewall. A first guide plate is disposed inside the housing, and the first guide plate is located between the air inlet and the air outlet in the first direction. The bottom end of the first guide plate is connected to the bottom wall, the top end of the first guide plate extends toward the top wall and has a first distance between it and the top wall, and the opposing first and second plate surfaces of the first guide plate face the first side wall and the second side wall, respectively. as well as The second guide plate is disposed inside the housing, and the second guide plate is located between the first guide plate and the air outlet in the first direction. The top end of the second guide plate is connected to the top wall, and the bottom end of the second guide plate extends toward the bottom wall and has a second distance between it and the bottom wall. The opposing third and fourth plates of the second guide plate face the first side wall and the second side wall, respectively, and the third plate is inclined toward the second side wall.
2. The silencer according to claim 1, characterized in that, The fourth plate surface is inclined toward the second sidewall.
3. The silencer according to claim 2, characterized in that, The tilt angle of the fourth plate surface relative to the plane where the top wall is located is greater than the tilt angle of the third plate surface relative to the plane where the top wall is located.
4. The silencer according to claim 1, characterized in that, The plane angle between the third plate surface and the top wall falls within the range of 120° to 150°.
5. The silencer according to claim 1, characterized in that, The top of the second guide plate is located at the edge of the air outlet.
6. The silencer according to claim 1, characterized in that, Both the first plate surface and the second plate surface are perpendicular to the bottom wall.
7. The silencer according to any one of claims 1 to 6, characterized in that, The silencer satisfies at least one of the following: The plane angle between the third plate surface and the top wall falls within the range of 135° to 145°. The ratio of the first distance to the second distance falls within the range of 0.3 to 0.5, where the first distance is the distance between the bottom end of the third plate and the second sidewall, and the second distance is the distance between the bottom end of the third plate and the first sidewall. The ratio of the first distance to the third distance falls within the range of 1.3 to 1.5, where the third distance is the distance between the top end of the second plate and the bottom end of the third plate in the first direction. The ratio of the fourth distance to the fifth distance falls within the range of 1.0 to 1.2, where the fourth distance is the distance between the second plate surface and the second sidewall, and the fifth distance is the distance between the first plate surface and the first sidewall. The ratio of the sixth distance to the seventh distance falls within the range of 0.5 to 0.7, where the sixth distance is the distance between the centerline of the first plate and the centerline of the air inlet, and the seventh distance is the distance between the centerline of the air inlet and the first sidewall. The ratio of the third distance to the sixth distance falls within the range of 0.9 to 1.0, or The ratio of the eighth distance to the ninth distance falls within the range of 0.2 to 0.
4. The eighth distance is the distance between the top end of the second plate and the bottom end of the third plate in the second direction, and the ninth distance is the distance between the top wall and the bottom wall.
8. The muffler according to claim 7, characterized in that, The rated gas flow rate of the silencer falls below 5000m. 3 / h to 20000m 3 Within the range of / h.
9. The silencer according to claim 8, characterized in that, The sixth distance falls within the range of 100mm to 150mm, and / or the third distance falls within the range of 100mm to 150mm, and / or the eighth distance falls within the range of 50mm to 100mm.
10. The silencer according to claim 1, characterized in that, The enclosure further includes a third sidewall and a fourth sidewall facing each other in a third direction perpendicular to the first direction and the second direction, the top and bottom ends of the third sidewall being connected to the top wall and the bottom wall, respectively, and the top and bottom ends of the fourth sidewall being connected to the top wall and the bottom wall, respectively; and The two sides of the first guide plate are connected to the third sidewall and the fourth sidewall, respectively, and the two sides of the second guide plate are connected to the third sidewall and the fourth sidewall, respectively.
11. The silencer according to claim 1, characterized in that, At least one of the inner surface of the housing, the surface of the first guide plate, or the surface of the second guide plate is covered with a sound-absorbing layer, wherein the sound-absorbing layer includes a sound-absorbing material layer and a porous sound-absorbing plate covering the outside of the sound-absorbing material layer.
12. A blower device, characterized in that, It includes a blower unit and a silencer as described in any one of claims 1 to 10, wherein the vent of the blower unit is connected to the air inlet of the silencer, and the air outlet of the silencer is connected to the outside.