High-efficiency silent fan

Abstract

The present invention relates to the technical field of Roots blowers, and in particular to a high-efficiency silencer blower, comprising a chassis, an air inlet module, a blower module, a drive module, a silencer module and an air outlet module, wherein the chassis comprises a base and a hood arranged on the base, a control module is arranged on one side of the hood, and the control module is electrically controlled and connected to the blower module; the blower module comprises a blower casing and two blower impellers with tangent outer diameters arranged in the blower casing, the drive module is arranged on one side of the blower casing, and is used to drive the blower impellers to rotate in the blower casing to transport the gas introduced by the air inlet module toward the air outlet module; the blower module and the air outlet module are both arranged on the base; the present invention not only optimizes the power transmission path of the blower and improves the energy efficiency ratio, but also achieves low-noise operation through innovative noise reduction design.

Description

Technical Field

[0001] The invention relates to the technical field of Roots blowers, in particular to a high-efficiency silencer blower. Background Art

[0002] A Roots blower, also known as a Roots blower, is a positive displacement blower. Its operating principle is based on the relative motion of two or three bladed rotors within a cylinder, achieving rotary compression by compressing and conveying gas. Roots blowers are compact and flexible to install, making them widely used in a variety of applications, including aquaculture oxygenation, sewage treatment aeration, and cement transportation. They are particularly well-suited for gas transportation and pressurization systems in low-pressure environments. Roots blowers primarily consist of a casing, impeller, and muffler. The rotating impeller often adopts a three-blade design, which offers lower noise and smoother operation than a two-blade design. The exhaust volume and speed are adjustable within a certain range, and the flow rate varies little with pressure, demonstrating the characteristics of forced air transmission.

[0003] Both three-blade and two-blade impellers generate noise at high speeds, causing noise pollution to the surrounding environment. Conventional mufflers are currently used to reduce this noise, but the effect is not ideal. Since high-speed fan operation generates a large amount of heat and the drive system also causes noise, a new design is needed to address the existing fan noise reduction and heat dissipation issues. Summary of the Invention

[0004] To solve the above problems, the present invention not only optimizes the power transmission path of the fan and improves the energy efficiency ratio, but also realizes a high-efficiency silent fan with low noise operation through an innovative noise reduction design.

[0005] The technical solution adopted by the present invention is: a high-efficiency silencer fan, including a chassis, an air inlet module, a fan module, a drive module, a silencer module and an air outlet module, the chassis including a base and a hood arranged on the base, a control module is provided on one side of the hood, and the control module is electrically controlled and connected to the fan module; the fan module includes a fan casing and two fan impellers with tangent outer diameters arranged in the fan casing, the drive module is arranged on one side of the fan casing, and is used to drive the fan impeller to rotate in the fan casing to transport the gas introduced by the air inlet module toward the air outlet module; the fan module and the air outlet module are both arranged on the base.

[0006] A further improvement to the above scheme is that a drive placement cavity is provided at one end of the fan housing, the drive module includes a drive mounting seat, a direct-drive motor, a gear housing and a driven gear, the drive mounting seat is provided on the drive placement cavity, and a closed cavity is formed on the drive placement cavity, the direct-drive motor is placed in the closed cavity and connected to one end of the drive mounting seat; the direct-drive motor includes a base, a stator assembly, a rotor assembly and a rotating shaft, one end of the base is connected to the drive mounting seat, the stator assembly is provided on the outer periphery of the base, a rotating placement cavity is provided in the base, the rotor assembly includes a rotor housing, a sealing end cover and a rotor magnetic tile, and the rotor magnetic tile is provided on the rotor housing The inner diameter of the shaft is arranged opposite to the stator assembly, the inner periphery of the sealing end cover is rotatably connected to the base, and the outer periphery is fixedly connected to the rotor housing; one end of the rotating shaft is rotatably arranged in the rotating placement cavity, and the other end is fixedly connected to the rotor housing and extends toward the fan impeller, and a coupling is provided at one end of the rotating shaft; the gear housing is arranged on the rotor housing, and the rotating shaft is connected to one of the two fan impellers through a coupling, and the driven gear is connected to the other fan impeller, and the driven gear is synchronously transmitted with the gear housing; when the rotating shaft rotates, it drives the rotor housing and the gear housing to rotate synchronously, so that the driven gear rotates, so that the two fan impellers with tangent outer diameters rotate relative to each other.

[0007] A further improvement to the above solution is that an air inlet interface and an air outlet interface are provided at the top of the hood, the air inlet interface is connected to the air inlet module, and the air outlet interface is connected to the air outlet module.

[0008] A further improvement to the above solution is that exhaust fans are provided on both sides of the hood to dissipate heat inside the hood.

[0009] A further improvement to the above scheme is that the base is provided with a shock-absorbing assembly, and the base is connected to the fan module and the air outlet module through the shock-absorbing assembly; the shock-absorbing assembly includes a first connecting plate, a shock-absorbing spring and a second connecting plate, the first connecting plate is relatively parallel to the second connecting plate, the axis of the shock-absorbing spring is relatively parallel to the length direction of the first connecting plate and the second connecting plate, and the shock-absorbing spring is used to connect the first connecting plate with the second connecting plate.

[0010] A further improvement to the above solution is that a cooling channel is provided on the periphery of the fan housing, and the cooling channel is used for heat dissipation of the fan housing.

[0011] A further improvement to the above scheme is that a connecting channel is provided on one side of the drive placement cavity, and the connecting channel is used to connect the cooling channel with the closed cavity; a liquid supply interface is provided on one side of the drive mounting seat, and a liquid outlet interface is provided on one side of the cooling channel; an oil pressure cooling system is provided on one side of the base, and the oil pressure cooling system is respectively connected to the liquid supply interface and the liquid outlet interface to perform liquid cooling on the closed cavity and the fan casing respectively.

[0012] A further improvement to the above scheme is that the air inlet module includes an air inlet sleeve, an air inlet filter cartridge and an air inlet connecting elbow, the air inlet filter cartridge is arranged inside the air inlet sleeve, one end of the air inlet filter cartridge is connected to the air inlet connecting elbow, one end of the air inlet connecting elbow is provided with an air inlet flange, and the air inlet flange is connected to the air inlet of the fan casing; an air inlet channel is formed between the air inlet filter cartridge and the air inlet sleeve, and an air inlet groove is provided on the air inlet filter cartridge.

[0013] A further improvement to the above solution is that the air outlet module includes a first-stage silencer, a second-stage silencer and a third-stage silencer connected in sequence; the first-stage silencer is provided with an air outlet flange, and the air outlet flange is connected to the air outlet of the fan casing.

[0014] A further improvement to the above scheme is that a first connecting flange is provided between the first-stage silencer and the second-stage silencer, and the first connecting flange is used to connect the first-stage silencer with the second-stage silencer; a second connecting flange is provided between the second-stage silencer and the third-stage silencer, and the second connecting flange is used to connect the second-stage silencer with the third-stage silencer.

[0015] A further improvement to the above solution is that the first-level silencer includes a first outer tube and a first inner tube arranged in the first outer tube, a first silencer cavity is provided between the first outer tube and the first inner tube; and the first silencer cavity is filled with a first silencer filler.

[0016] A further improvement to the above solution is that the secondary silencer includes a second outer tube and a second inner tube arranged in the second outer tube, a second silencer cavity is provided between the second outer tube and the second inner tube; and the second silencer cavity is filled with a second silencer filler.

[0017] A further improvement to the above solution is that the three-stage silencer includes a third outer tube and a third inner tube arranged in the third outer tube, a third silencer cavity is provided between the third outer tube and the third inner tube; and the third silencer cavity is filled with a third silencer filler.

[0018] A further improvement to the above solution is that the first sound-absorbing filler, the second sound-absorbing filler and the third sound-absorbing filler are all sound-absorbing cotton or honeycomb high-damping fillers.

[0019] A further improvement to the above scheme is that the silencer module is provided with two groups, and the two groups of silencer modules are respectively arranged in the secondary silencer and the tertiary silencer. The silencer module includes a silencer connecting frame and a conical silencer. The silencer connecting frame is provided with a hollow groove, and the hollow groove is used for ventilation. The silencer connecting frame is used to set the conical silencer at the air outlet of the silencer, and the conical tip of the conical silencer is opposite to the air outlet direction.

[0020] A further improvement to the above scheme is that the silencer module is provided with two groups, and the two groups of silencer modules are respectively arranged in the secondary silencer and the tertiary silencer, and the silencer module includes a silencer connecting frame and a conical silencer, and the silencer connecting frame is provided with a hollow groove, and the hollow groove is used for ventilation; the inner periphery of the silencer connecting frame is provided with a rotating thread groove, and the conical silencer includes an outer rotor motor, and the outer periphery of the outer rotor motor is provided with a threaded portion and a conical portion, the threaded portion is rotatably connected to the rotating thread groove, and the conical portion faces the air outlet of the silencer; the outer rotor motor is used to drive the threaded portion to drive the conical portion to move on the silencer connecting frame to adjust the size of the hollow groove.

[0021] A further improvement to the above scheme is that the control module is provided with a silencer control system, which includes a noise receiving module and a silencer control module. The noise receiving module is arranged on the silencer module to sense the decibel parameters of the noise generated during the exhaust process. The silencer control module is used to control the rotation of the outer rotor motor to adjust the size of the hollow slot. The size of the hollow slot is used to increase or decrease the exhaust volume.

[0022] The beneficial effects of the present invention are:

[0023] Compared with existing fans, the present invention includes a chassis, an air inlet module, a fan module, a drive module, a silencer module and an air outlet module, which greatly improves the flexibility and maintainability of the system. The chassis adopts a stable structure of a base and a hood, which not only enhances the overall stability, but also realizes efficient electrical control connection of the fan module through the control module set on one side of the hood, which is convenient to operate and precise to control. The fan module innovatively adopts a dual fan impeller design, and the outer diameters of the two impellers are arranged tangentially. This layout effectively utilizes the space inside the fan casing and improves the air compression efficiency and air volume output capacity. At the same time, the drive module acts directly on one side of the fan casing, ensuring the directness and efficiency of power transmission, further promoting the smooth flow of gas from the air inlet module to the air outlet module, and realizing efficient gas transportation. Through the technical characteristics of high efficiency and low noise, the present invention not only improves the overall performance of the equipment, but also greatly broadens the application range of the fan.

[0024] The integrated design of the drive module's direct-drive motor is placed in a sealed cavity, which not only effectively isolates the electromagnetic noise and mechanical vibration during motor operation, but also greatly reduces the loss during energy transfer by reducing the use of transmission components (such as traditional reducers), thereby improving energy conversion efficiency and enabling the fan to achieve higher air volume output with lower energy consumption.

[0025] The precise construction of the rotor assembly, particularly the precise alignment of the rotor magnets and stator assembly, and the rotatable connection between the sealing end cover and the base, ensures smoothness and sealing during rotation, further reducing noise caused by air leakage or mechanical friction, in line with the original design intent of a high-efficiency, silent fan. The rotating shaft is directly connected to a fan impeller via a coupling, and the two fan impellers with tangential outer diameters are driven to rotate relative to each other through synchronous transmission of the gear housing and the driven gear. This dual-impeller design not only enhances air flow efficiency but also significantly reduces the overall noise level during fan operation by offsetting some aerodynamic noise, achieving the dual goals of high efficiency and quietness. It not only optimizes the fan's power transmission path and improves the energy efficiency ratio, but also achieves low-noise operation through innovative noise reduction design. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional schematic diagram of the high-efficiency silencer fan of the present invention;

[0027] Figure 2 for Figure 1 A three-dimensional schematic diagram of a medium and high efficiency silencer fan from another perspective;

[0028] Figure 3 for Figure 1 Schematic diagram of the internal structure of a medium and high efficiency silencer fan;

[0029] Figure 4 for Figure 1 Schematic diagram of the internal structure of a medium and high efficiency silencer fan from another perspective;

[0030] Figure 5 for Figure 1 Schematic diagram of the structure of the vibration reduction component of the medium and high efficiency silencer fan;

[0031] Figure 6 for Figure 1 A three-dimensional schematic diagram of the air inlet module of a medium- and high-efficiency silencer fan;

[0032] Figure 7 for Figure 1 Schematic diagram of the internal structure of the air inlet module of a medium and high efficiency silencer fan;

[0033] Figure 8 for Figure 1 A three-dimensional schematic diagram of the fan module of a medium and high efficiency silencer fan;

[0034] Figure 9 for Figure 1 Schematic diagram of the internal structure of the fan module of a medium and high efficiency silencer fan;

[0035] Figure 10 for Figure 9 A is an enlarged schematic diagram;

[0036] Figure 11 for Figure 1 Schematic diagram of the connection between the fan module of the medium and high efficiency silencer fan and the oil pressure cooling system;

[0037] Figure 12 for Figure 1 A three-dimensional schematic diagram of the air outlet module of a medium- and high-efficiency silencer fan;

[0038] Figure 13 for Figure 1 Internal schematic diagram of the air outlet module of a medium and high efficiency silencer fan;

[0039] Figure 14 for Figure 13 A schematic structural diagram of an embodiment of a silencer module for a medium and high efficiency silencer fan;

[0040] Figure 15 for Figure 1 Schematic diagram of the connection of the silencer control system for medium and high efficiency silencer fans.

[0041] Description of the accompanying drawings: chassis 1, base 11, oil pressure cooling system 111, cover 12, air inlet port 121, air outlet port 122, exhaust fan 123, control module 13, silencer control system 131, noise receiving module 132, silencer control module 133, shock absorbing assembly 14, first connecting piece 141, shock absorbing spring 142, second connecting piece 143;

[0042] Air inlet module 2, air inlet sleeve 21, air inlet filter cartridge 22, air inlet channel 221, air inlet connecting elbow 23, air inlet flange 231;

[0043] Fan module 3, fan housing 31, drive placement cavity 311, cooling channel 312, connecting channel 313, liquid outlet interface 314, fan impeller 32;

[0044] Drive module 4, drive mounting base 41, liquid supply port 411, direct drive motor 42, base 421, rotary mounting chamber 4211, stator assembly 422, rotor assembly 423, rotor housing 4231, sealing end cover 4232, rotor magnetic shoe 4233, rotating shaft 424, coupling 4241, gear housing 43, driven gear 44;

[0045] Silencer module 5, silencer connecting frame 51, hollow groove 511, rotating thread groove 512, conical silencer 52, outer rotor motor 521, threaded portion 522, conical portion 523;

[0046] Air outlet module 6, first-stage silencer 61, first outer tube 611, first inner tube 612, first silencer cavity 613, second-stage silencer 62, second outer tube 621, second inner tube 622, second silencer cavity 623, third-stage silencer 63, third outer tube 631, third inner tube 632, third silencer cavity 633, air outlet flange 64, first connecting flange 65, second connecting flange 66. DETAILED DESCRIPTION

[0047] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the accompanying drawings. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present disclosure.

[0048] It should be noted that when an element is referred to as being “fixed to” another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or there may be an intermediate element.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention pertains. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. Figures 1 to 15As shown, in one embodiment of the present invention, a high-efficiency silencer fan is involved, including a chassis 1, an air inlet module 2, a fan module 3, a drive module 4, a silencer module 5 and an air outlet module 6, the chassis 1 includes a base 11 and a hood 12 arranged on the base 11, a control module 13 is provided on one side of the hood 12, and the control module 13 is electrically controlled and connected to the fan module 3; the fan module 3 includes a fan casing 31 and two fan impellers 32 with tangent outer diameters arranged in the fan casing 31, the drive module 4 is arranged on one side of the fan casing 31, and is used to drive the fan impeller 32 to rotate in the fan casing 31 to transport the gas introduced by the air inlet module 2 toward the air outlet module 6; the fan module 3 and the air outlet module 6 are both arranged on the base 11. The present invention includes a chassis 1, an air inlet module 2, a fan module 3, a drive module 4, a silencer module 5, and an air outlet module 6, which greatly improves the flexibility and maintainability of the system. The chassis 1 adopts a stable structure of a base 11 and a hood 12, which not only enhances the overall stability, but also realizes efficient electrical control connection of the fan module 3 through the control module 13 set on one side of the hood 12, which is convenient to operate and precise to control. The fan module 3 innovatively adopts a dual fan impeller 32 design, and the outer diameters of the two impellers are arranged tangentially. This layout effectively utilizes the space inside the fan housing 31, improving the air compression efficiency and air volume output capacity. At the same time, the drive module 4 acts directly on one side of the fan housing 31, ensuring the directness and efficiency of power transmission, further promoting the smooth flow of gas from the air inlet module 2 to the air outlet module 6, and realizing efficient gas transportation. The present invention not only improves the overall performance of the equipment through the technical characteristics of high efficiency and low noise, but also greatly broadens the application range of the fan.

[0050] See Figure 9As shown, a drive placement cavity 311 is provided at one end of the fan housing 31, and the drive module 4 includes a drive mounting seat 41, a direct-drive motor 42, a gear housing 43 and a driven gear 44. The drive mounting seat 41 is provided on the drive placement cavity 311, and a closed cavity is formed on the drive placement cavity 311. The direct-drive motor 42 is placed in the closed cavity and connected to one end of the drive mounting seat 41; the direct-drive motor 42 includes a base 421, a stator assembly 422, a rotor assembly 423 and a rotating shaft 424. One end of the base 421 is connected to the drive mounting seat 41, the stator assembly 422 is provided on the outer periphery of the base 421, and a rotating placement cavity 4211 is provided in the base 421. The rotor assembly 423 includes a rotor housing 4231, a sealing end cover 4232 and a rotor magnetic tile 4233. The rotor magnetic tile 4233 is provided on the rotor housing 4231. The inner diameter of the fan is arranged on the inner periphery of the sealing end cover 4232, and is opposite to the stator assembly 422. The inner periphery of the sealing end cover 4232 is rotatably connected to the base 421, and the outer periphery is fixedly connected to the rotor housing 4231; one end of the rotating shaft 424 is rotatably set in the rotating placement cavity 4211, and the other end is fixedly connected to the rotor housing 4231 and extends toward the fan impeller 32. A coupling 4241 is provided at one end of the rotating shaft 424; the gear housing 43 is set on the rotor housing 4231, and the rotating shaft 424 is connected to one of the two fan impellers 32 through the coupling 4241. The driven gear 44 is connected to the other fan impeller 32, and the driven gear 44 is synchronously transmitted with the gear housing 43; when the rotating shaft 424 rotates, it drives the rotor housing 4231 and the gear housing 43 to rotate synchronously, so that the driven gear 44 rotates, so that the two fan impellers 32 with tangent outer diameters rotate relative to each other. In this embodiment, the integrated design of the direct-drive motor 42 in the drive module 4 is housed within a sealed cavity. This not only effectively isolates the electromagnetic noise and mechanical vibrations during motor operation, but also significantly reduces losses during energy transfer by eliminating the need for transmission components (such as traditional speed reducers), thereby improving energy conversion efficiency and enabling the fan to achieve higher air volume output while consuming less energy. In this embodiment, the precise construction of the rotor assembly 423, particularly the precise alignment of the rotor magnet 4233 with the stator assembly 422, and the rotatable connection between the sealing end cap 4232 and the base 421, ensures smooth and tight rotation, further reducing noise generated by air leakage or mechanical friction, thus meeting the design objectives of a high-efficiency, silent fan. The rotating shaft 424 is directly connected to one fan impeller 32 via a coupling 4241. The gear housing 43 and the driven gear 44 synchronously drive the two fan impellers 32, whose outer diameters are tangential to each other, to rotate relative to each other. This dual-impeller design not only enhances air flow efficiency but also significantly reduces the overall noise level of the fan during operation by offsetting some of the aerodynamic noise, achieving the dual goals of high efficiency and quietness.It not only optimizes the power transmission path of the fan and improves the energy efficiency ratio, but also achieves low-noise operation through innovative noise reduction design.

[0051] An air inlet interface 121 and an air outlet interface 122 are provided at the top of the hood 12. The air inlet interface 121 is connected to the air inlet module 2, and the air outlet interface 122 is connected to the air outlet module 6. Specifically, exhaust fans 123 are provided on both sides of the hood 12 for internal heat dissipation of the hood 12. In this embodiment, by directly connecting to the air inlet module 2 and the air outlet module 6, this design ensures the smooth flow of airflow, which not only optimizes the aerodynamic characteristics, but also effectively reduces wind resistance and noise generation, and is highly consistent with the core concept of a high-efficiency silencer fan. In addition, the exhaust fans 123 arranged on both sides of the hood 12, as internal heat dissipation components, can quickly discharge the heat generated during the operation of the fan, maintain the stability of the internal temperature of the body, thereby extending the service life of the equipment and ensuring the continuous and efficient operation of the fan in a high-intensity working environment.

[0052] See Figure 5 As shown, the base 11 is provided with a shock-absorbing assembly 14, which connects the base 11 to the fan module 3 and the air outlet module 6 via the shock-absorbing assembly 14. The shock-absorbing assembly 14 includes a first connecting piece 141, a shock-absorbing spring 142, and a second connecting piece 143. The first connecting piece 141 and the second connecting piece 143 are relatively parallel, and the axis of the shock-absorbing spring 142 is relatively parallel to the length of the first connecting piece 141 and the second connecting piece 143. The shock-absorbing spring 142 is used to connect the first connecting piece 141 and the second connecting piece 143. In this embodiment, the shock-absorbing assembly 14 effectively isolates the vibration generated by the fan module 3 and the air outlet module 6 during operation through the precisely designed combination of the first connecting piece 141, the shock-absorbing spring 142, and the second connecting piece 143, thereby preventing direct transmission of vibration to the surrounding environment and reducing noise pollution. The axis of the shock-absorbing spring 142 is arranged parallel to the length of the connecting piece, ensuring maximum shock absorption while maintaining a compact and stable structure. This design not only extends the service life of the fan and related components, reduces wear and failure caused by vibration, but also further enhances the fan's noise reduction effect, making the high-efficiency silencer fan more stable and quiet during operation, meeting the low-noise operation requirements in high-demand environments, and providing higher-quality and reliable wind power transmission for various application scenarios.

[0053] See Figure 11As shown, a cooling channel 312 is provided on the periphery of the fan housing 31, and the cooling channel 312 is used to dissipate heat from the fan housing 31. Specifically, a connecting channel 313 is provided on one side of the drive placement cavity 311, and the connecting channel 313 is used to connect the cooling channel 312 with the closed cavity; a liquid supply interface 411 is provided on one side of the drive mounting seat 41, and a liquid outlet interface 314 is provided on one side of the cooling channel 312; an oil pressure cooling system 111 is provided on one side of the base 11, and the oil pressure cooling system 111 is respectively connected to the liquid supply interface 411 and the liquid outlet interface 314, so as to perform liquid cooling on the closed cavity and the fan housing 31, respectively. In this embodiment, the cooling channel 312 is connected to the closed cavity by utilizing the connecting channel 313, thereby realizing dual liquid cooling of the core components inside the fan and the housing. Through precise control by the hydraulic cooling system 111, coolant supplied via the liquid supply port 411 effectively absorbs heat from the enclosed cavity before flowing through the cooling channel 312 for secondary heat dissipation from the fan housing 31, ultimately being discharged through the liquid outlet port 314, forming a closed loop. This technology not only significantly reduces the fan's operating temperature, extending the service life of key components like the motor and bearings, but also, through efficient thermal management strategies, reduces noise issues caused by overheating, further enhancing the fan's silencer effect.

[0054] See Figure 6-Figure 7 As shown, the air inlet module 2 includes an air inlet sleeve 21, an air inlet filter cartridge 22, and an air inlet connecting elbow 23. The air inlet filter cartridge 22 is disposed within the air inlet sleeve 21. One end of the air inlet filter cartridge 22 is connected to the air inlet connecting elbow 23. One end of the air inlet connecting elbow 23 is provided with an air inlet flange 231, which is connected to the air inlet of the fan housing 31. An air inlet channel 221 is formed between the air inlet filter cartridge 22 and the air inlet sleeve 21, and an air inlet slot is provided on the air inlet filter cartridge 22. In this embodiment, the air inlet filter cartridge 22 is built into the air inlet sleeve 21, effectively isolating external impurities and particulate matter. The air inlet slot thereon achieves preliminary air purification, thereby protecting the internal components of the fan from contamination and extending the service life of the equipment. Secondly, the seamless connection between the air inlet connection elbow 23 and the air inlet of the fan housing 31, coupled with the secure connection of the air inlet flange 231, ensures smooth and efficient airflow, reduces energy loss, and improves overall operating efficiency. Furthermore, this modular design facilitates maintenance and replacement. When the filter cartridge needs cleaning or replacement, it can be done quickly without affecting the continued operation of the entire system. Most importantly, this design optimizes the airflow path and reduces noise caused by airflow disturbances. This, combined with the other noise reduction measures of the high-efficiency silencer fan, creates a low-noise, high-efficiency working environment.

[0055] See Figure 12-13As shown, the air outlet module 6 includes a first-stage silencer 61, a second-stage silencer 62 and a third-stage silencer 63 connected in sequence; the first-stage silencer 61 is provided with an air outlet flange 64, and the air outlet flange 64 is connected to the air outlet of the fan casing 31; a first connecting flange 65 is provided between the first-stage silencer 61 and the second-stage silencer 62, and the first connecting flange 65 is used to connect the first-stage silencer 61 with the second-stage silencer 62; a second connecting flange 66 is provided between the second-stage silencer 62 and the third-stage silencer 63, and the second connecting flange 66 is used to connect the second-stage silencer 62 with the third-stage silencer 63. Specifically, the first-stage silencer 61 includes a first outer tube 611 and a first inner tube 612 arranged in the first outer tube 611, a first silencer cavity 613 is arranged between the first outer tube 611 and the first inner tube 612; the first silencer cavity 613 is filled with a first silencer filler; the second-stage silencer 62 includes a second outer tube 621 and a second inner tube 622 arranged in the second outer tube 621, a second silencer cavity 623 is arranged between the second outer tube 621 and the second inner tube 622; the second silencer cavity 623 is filled with a second silencer filler; the third-stage silencer 63 includes a third outer tube 631 and a third inner tube 632 arranged in the third outer tube 631, a third silencer cavity 633 is arranged between the third outer tube 631 and the third inner tube 632; the third silencer cavity 633 is filled with a third silencer filler; the first silencer filler, the second silencer filler and the third silencer filler are all silencer cotton or honeycomb high-damping fillers. In this embodiment, a three-stage series of silencers—namely, primary, secondary, and tertiary silencers 63—progressively reduces fan noise levels. Each silencer stage 61 comprises an inner and outer tube structure, with the silencer cavity formed between them filled with highly effective sound-absorbing materials, such as sound-absorbing cotton or honeycomb-shaped high-damping filler. These materials effectively absorb and transform sound energy, thereby reducing noise transmission.

[0056] In the above embodiment, the first-stage silencer 61 serves as the initial noise reduction link, and its designed outlet flange 64 is directly connected to the air outlet of the fan housing 31, ensuring a smooth transition of the airflow while starting noise suppression. Subsequently, the precise design and application of the first connecting flange 65 and the second connecting flange 66 not only ensure a stable connection between the silencers at each level, but also further blocks the direct transmission path of the noise along the connection. The second-stage and third-stage silencers 63 continue to deepen the noise reduction effect, and through their own independent silencer cavities and fillers, the remaining noise is attenuated twice and three times, ultimately achieving a significant reduction in the fan outlet noise. This multi-stage, multi-cavity composite silencer strategy exhibits higher flexibility and efficiency in noise control compared to a single silencer structure.

[0057] There are two groups of silencer modules 5, and the two groups of silencer modules 5 are respectively arranged in the secondary silencer 62 and the tertiary silencer 63. The silencer modules 5 include a silencer connecting frame 51 and a conical silencer 52. The silencer connecting frame 51 is provided with a hollow groove 511, and the hollow groove 511 is used for ventilation. The silencer connecting frame 51 is used to set the conical silencer 52 at the air outlet of the silencer, and the conical tip of the conical silencer 52 is opposite to the air outlet direction. In this embodiment, two groups of silencer modules 5 are introduced and respectively deployed inside the secondary and tertiary silencers 63, which significantly improves the overall noise reduction performance. Each group of silencer modules 5 is composed of a silencer connecting frame 51 and a conical silencer 52, wherein the hollow groove 511 design of the silencer connecting frame 51 not only ensures the smooth flow of airflow, but also cleverly reduces the additional noise caused by structural obstruction while maintaining the balance of air volume and pressure. The conical silencer 52, with its unique tapered tip facing the air outlet, effectively utilizes the reflection and attenuation of sound within the conical space, further reducing the propagation energy of noise. This structural layout not only enhances the sound attenuation effect but also optimizes the fan's acoustic performance. This allows the high-efficiency silencer fan to significantly reduce noise levels during operation, achieving a quieter working environment. It is suitable for industrial and residential applications with strict noise control requirements.

[0058] See Figure 14As shown, there are two groups of silencer modules 5, which are respectively arranged in the secondary silencer 62 and the tertiary silencer 63. The silencer module 5 includes a silencer connecting frame 51 and a conical silencer 52. The silencer connecting frame 51 is provided with a hollow groove 511, and the hollow groove 511 is used for ventilation; the inner periphery of the silencer connecting frame 51 is provided with a rotating thread groove 512, and the conical silencer 52 includes an outer rotor motor 521, and the outer periphery of the outer rotor motor 521 is provided with a threaded portion 522 and a conical portion 523. The threaded portion 522 is rotatably connected to the rotating thread groove 512, and the conical portion 523 faces the air outlet of the silencer; the outer rotor motor 521 is used to drive the threaded portion 522 to drive the conical portion 523 to move on the silencer connecting frame 51 to adjust the size of the hollow groove 511. In this embodiment, the silencer module 5 realizes dynamic silencer adjustment by combining the silencer connecting frame 51 with the conical silencer 52. The hollow groove 511 design of the silencer connecting frame 51 ensures effective ventilation. At the same time, its built-in rotating thread groove 512 is closely matched with the threaded portion 522 of the outer rotor motor 521, allowing the conical portion 523 to be flexibly moved according to demand. This mechanism allows the fan to automatically or manually adjust the position of the conical portion 523 under different working conditions through the drive of the outer rotor motor 521, thereby accurately controlling the opening and closing degree of the hollow groove 511 and optimizing the airflow path and silencer effect. This technology not only improves the silencer efficiency, but also enhances the fan's adaptability to different noise frequencies, achieving more refined noise control. In addition, the dynamic adjustment function also promotes the improvement of the fan's energy efficiency, ensuring that while reducing noise, the fan's air volume and air pressure performance are maintained or improved, providing an ideal solution for all kinds of places that require a low-noise, high-efficiency ventilation environment.

[0059] See Figure 15As shown, the control module 13 is equipped with a noise reduction control system 131, which includes a noise receiving module 132 and a noise reduction control module 133. The noise receiving module 132 is installed on the noise reduction module 5 to sense the decibel parameters of the noise generated during the exhaust process. The noise reduction control module 133 is used to control the rotation of the outer rotor motor 521 to adjust the size of the hollow slot 511. The size of the hollow slot 511 is used to increase or decrease the exhaust volume. In this embodiment, the precise noise receiving module 132 can accurately capture the decibel parameters of the noise generated during the exhaust process in real time, providing a critical data foundation for subsequent noise reduction processing. Subsequently, the noise reduction control module 133 intelligently controls the rotation of the outer rotor motor 521 based on the received noise information and dynamically adjusts the size of the hollow slot 511 inside the fan. This innovative mechanism not only effectively reduces the noise level during fan operation, achieving the goal of efficient noise reduction, but also accurately controls the exhaust volume by flexibly adjusting the size of the hollow slot 511, ensuring that the fan maintains optimal performance under different operating conditions. In addition, the application of this technology has enhanced the intelligence level of the fan and improved the energy efficiency of the overall system.

[0060] The above embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A high-efficiency silencer fan, characterized by: The air conditioner comprises a chassis, an air inlet module, a fan module, a drive module, a silencer module, and an air outlet module. The chassis comprises a base and a hood arranged on the base. A control module is arranged on one side of the hood and is electrically connected to the fan module. The fan module comprises a fan housing and two fan impellers with tangential outer diameters arranged in the fan housing. The drive module is arranged on one side of the fan housing and is used to drive the fan impellers to rotate in the fan housing to transport the gas introduced by the air inlet module toward the air outlet module. The fan module and the air outlet module are both arranged on the base; A drive placement cavity is provided at one end of the fan housing, and the drive module includes a drive mounting seat, a direct-drive motor, a gear housing and a driven gear. The drive mounting seat is provided on the drive placement cavity, and a closed cavity is formed on the drive placement cavity. The direct-drive motor is placed in the closed cavity and connected to one end of the drive mounting seat; the direct-drive motor includes a base, a stator assembly, a rotor assembly and a rotating shaft. One end of the base is connected to the drive mounting seat, the stator assembly is provided on the outer periphery of the base, and a rotating placement cavity is provided in the base. The rotor assembly includes a rotor housing, a sealing end cover and a rotor magnetic tile. The rotor magnetic tile is provided on the inner diameter of the rotor housing and is connected to the stator assembly. The subassemblies are opposite, the inner periphery of the sealing end cover is rotatably connected to the base, and the outer periphery is fixedly connected to the rotor housing; one end of the rotating shaft is rotatably arranged in the rotating placement cavity, and the other end is fixedly connected to the rotor housing and extends toward the fan impeller, and a coupling is provided at one end of the rotating shaft; the gear housing is provided on the rotor housing, the rotating shaft is connected to one of the two fan impellers through the coupling, the driven gear is connected to the other fan impeller, and the driven gear is synchronously driven with the gear housing; when the rotating shaft rotates, it drives the rotor housing and the gear housing to rotate synchronously, so that the driven gear rotates, so that the two fan impellers with tangential outer diameters rotate relative to each other; The base is provided with a shock-absorbing assembly, and the base is connected to the fan module and the air outlet module through the shock-absorbing assembly; the shock-absorbing assembly includes a first connecting piece, a shock-absorbing spring, and a second connecting piece, the first connecting piece is relatively parallel to the second connecting piece, the axis of the shock-absorbing spring is relatively parallel to the length direction of the first connecting piece and the second connecting piece, and the shock-absorbing spring is used to connect the first connecting piece with the second connecting piece; The air outlet module includes a first-stage silencer, a second-stage silencer, and a third-stage silencer connected in sequence; the first-stage silencer is provided with an air outlet flange, and the air outlet flange is connected to the air outlet of the fan housing; The silencer module is provided with two groups, and the two groups of silencer modules are respectively arranged in the secondary silencer and the tertiary silencer. The silencer module includes a silencer connecting frame and a conical silencer. The silencer connecting frame is provided with a hollow groove, and the hollow groove is used for ventilation; the inner periphery of the silencer connecting frame is provided with a rotating thread groove, and the conical silencer includes an outer rotor motor, and the outer periphery of the outer rotor motor is provided with a threaded portion and a conical portion. The threaded portion is rotatably connected to the rotating thread groove, and the conical portion faces the air outlet of the silencer; the outer rotor motor is used to drive the threaded portion to drive the conical portion to move on the silencer connecting frame to adjust the size of the hollow groove.

2. The high-efficiency silencer fan according to claim 1, characterized in that: An air inlet interface and an air outlet interface are provided at the top of the hood, wherein the air inlet interface is connected to the air inlet module, and the air outlet interface is connected to the air outlet module; Exhaust fans are provided on both sides of the hood for dissipating heat inside the hood.

3. The high-efficiency silencer fan according to claim 1, characterized in that: A cooling channel is provided on the outer periphery of the fan housing, and the cooling channel is used for heat dissipation of the fan housing.

4. The high-efficiency silencer fan according to claim 3, characterized in that: A connecting channel is provided on one side of the drive placement cavity, and the connecting channel is used to connect the cooling channel with the closed cavity; a liquid supply interface is provided on one side of the drive mounting seat, and a liquid outlet interface is provided on one side of the cooling channel; an oil pressure cooling system is provided on one side of the base, and the oil pressure cooling system is respectively connected to the liquid supply interface and the liquid outlet interface to perform liquid cooling on the closed cavity and the fan casing respectively.

5. The high-efficiency silencer fan according to claim 1, characterized in that: The air intake module includes an air intake sleeve, an air intake filter cartridge and an air intake connecting elbow. The air intake filter cartridge is arranged inside the air intake sleeve, one end of the air intake filter cartridge is connected to the air intake connecting elbow, one end of the air intake connecting elbow is provided with an air intake flange, and the air intake flange is connected to the air inlet of the fan casing; an air intake channel is formed between the air intake filter cartridge and the air intake sleeve, and an air intake groove is provided on the air intake filter cartridge.

6. The high-efficiency silencer fan according to claim 1, characterized in that: A first connecting flange is provided between the first-stage silencer and the second-stage silencer, and the first connecting flange is used to connect the first-stage silencer and the second-stage silencer; a second connecting flange is provided between the second-stage silencer and the third-stage silencer, and the second connecting flange is used to connect the second-stage silencer and the third-stage silencer.

7. The high-efficiency silencer fan according to claim 6, characterized in that: The first-level silencer includes a first outer cylinder and a first inner cylinder arranged in the first outer cylinder, a first silencer cavity is arranged between the first outer cylinder and the first inner cylinder; the first silencer cavity is filled with a first silencer filler; The secondary silencer includes a second outer cylinder and a second inner cylinder arranged in the second outer cylinder, a second silencer cavity is provided between the second outer cylinder and the second inner cylinder; the second silencer cavity is filled with a second silencer filler; The three-stage silencer includes a third outer tube and a third inner tube arranged in the third outer tube, a third silencer cavity is arranged between the third outer tube and the third inner tube; the third silencer cavity is filled with a third silencer filler; The first sound-absorbing filler, the second sound-absorbing filler and the third sound-absorbing filler are all sound-absorbing cotton or honeycomb high-damping fillers.

8. The high-efficiency silencer fan according to claim 1, characterized in that: The control module is provided with a silencer control system, which includes a noise receiving module and a silencer control module. The noise receiving module is arranged on the silencer module to sense the decibel parameters of the noise generated during the exhaust process. The silencer control module is used to control the rotation of the outer rotor motor to adjust the size of the hollow slot. The size of the hollow slot is used to increase or decrease the exhaust volume.

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