Tower type low-noise multistage series fan

Abstract

The utility model relates to a tower type low-noise multistage series fan which comprises a fan cavity with an inner cavity formed inside, an air inlet formed in the top of the fan cavity, a motor arranged in the fan cavity, a communication cavity fixedly communicated with the motor cavity and a plurality of fan assemblies sequentially communicated with one end of the communication cavity. A rotating shaft is fixedly arranged at the output end of the motor, the fan assemblies are arranged on the rotating shaft, and the number of the fan assemblies is three. In the utility model, through the design of the multi-stage fan assembly connected in series, each stage can effectively accelerate and pressurize air, so that the air volume and the air pressure output of the fan are improved on the whole. The application requirements of high air volume and high air pressure are met, the energy loss is reduced by optimizing the air flowing path, and the energy efficiency of the fan is remarkably improved. In addition, the multiple fan assemblies are connected in sequence, eddy currents and turbulent currents are reduced, and therefore noise is reduced.

Description

Technical Field

[0001] This utility model relates to the field of wind turbines, and in particular to a tower-type low-noise multi-stage series wind turbine. Background Technology

[0002] With the rapid development of modern industry and urbanization, the demand for efficient and low-noise fan equipment is increasing. Especially in cooling towers, air conditioning systems, and ventilation, fans are key equipment, and their performance and noise levels directly affect the overall system's operating efficiency and user experience. Traditional fan equipment often suffers from high noise levels and low energy efficiency, making it difficult to meet the environmental protection, energy-saving, and comfort requirements of modern industry and urban life.

[0003] However, traditional wind turbines also suffer from significant noise levels, especially when multiple stages are connected in series. Therefore, developing a tower-type, low-noise, multi-stage series wind turbine is of great practical significance and application value. Utility Model Content

[0004] In view of this, the present invention aims to propose a tower-type low-noise multi-stage series fan to solve the problems in the prior art.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A tower-type low-noise multi-stage series fan includes a fan cavity with an internal cavity, an air inlet at the top of the fan cavity, a motor installed in the fan cavity, a connecting cavity fixedly connected to the motor cavity, and a plurality of fan assemblies sequentially connected to one end of the connecting cavity. The output end of the motor is fixedly provided with a rotating shaft, and the fan assemblies are installed on the rotating shaft. The fan assemblies are arranged in three groups in sequence.

[0007] The fan assembly includes a mounting sleeve, within which a guide vane and a fan assembly are provided. The fan assembly includes a first housing, fan blades, and a first rotating plate. The first housing is fixedly disposed within the mounting sleeve. The first rotating plate is disposed at the center of the mounting sleeve via a fixing assembly. The first rotating plate is fixedly connected to the rotating shaft and rotatably connected to the fixing assembly. Multiple fan blades are fixedly disposed at intervals and at an incline around the periphery of the first rotating plate. The mounting sleeves are arranged in a connected manner.

[0008] Furthermore, the air guide assembly includes a second housing, guide vanes, and a second rotating blade. The second housing is fixedly disposed within the mounting sleeve. The second rotating blade is rotatably connected to the rotating shaft. Multiple guide vanes are obliquely and fixedly disposed at intervals around the second rotating blade. The other end of the guide vane is fixedly connected to the inner sidewall of the second housing.

[0009] The fan blades and guide vanes are tilted in opposite directions.

[0010] Furthermore, the fixing component includes a mounting ring rotatably sleeved on the outer circumference of the first rotating piece, and the mounting ring is fixedly connected to the mounting sleeve by a mounting rod.

[0011] Furthermore, a support assembly is provided inside the communicating cavity. The support assembly includes a connecting sleeve and a connecting rod. The connecting sleeve is rotatably fitted onto the portion of the rotating shaft located inside the communicating cavity. The connecting sleeve is fixedly connected to the inner sidewall of the communicating cavity through the connecting rod.

[0012] Furthermore, the end of the fan assembly at the end, away from the fan cavity, is fixedly connected to an air passage cavity.

[0013] Furthermore, a base pad is fixedly provided at the bottom of the motor, and the base pad is fixedly connected to the bottom surface of the fan cavity.

[0014] Furthermore, a filter screen is fixedly installed at the air inlet.

[0015] Furthermore, the fan components are connected to each other and to the connecting cavity via positioning components;

[0016] The positioning component includes a protrusion and an inner groove. The protrusion is fixedly and symmetrically arranged on the side wall of the mounting sleeve. The inner groove is opened on the other side of the mounting sleeve and the side wall of the communicating cavity. The inner groove matches the protrusion.

[0017] Compared with the prior art, this utility model has the following advantages:

[0018] In this invention, a multi-stage series-connected fan assembly design allows each stage to effectively accelerate and pressurize the air, thereby improving the overall airflow and pressure output of the fan. This not only meets the application requirements for high airflow and high pressure but also reduces energy loss by optimizing the airflow path, significantly improving the fan's energy efficiency. Furthermore, the sequential connection of multiple fan components reduces eddies and turbulence, thus lowering noise levels. Attached Figure Description

[0019] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the fan assembly structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the air guide component structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the support component structure of this utility model;

[0025] Figure 6 This is a schematic diagram of the positioning component structure of this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Fan cavity; 101. Air inlet; 102. Filter screen; 2. Connecting cavity; 3. Motor; 4. Base pad; 5. Rotating shaft; 6. Support assembly; 601. Connecting sleeve; 602. Connecting rod; 7. Fan assembly; 701. Mounting sleeve; 702. First outer shell; 703. Fan blade; 704. First rotating plate; 705. Mounting ring; 706. Mounting rod; 707. Second outer shell; 708. Guide vane; 709. Second rotating plate; 8. Positioning assembly; 801. Inner groove; 802. Protrusion; 9. Air passage cavity. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0029] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "back," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0031] The following will refer to the appendix. Figures 1 to 5 The present invention will be described in detail with reference to the embodiments.

[0032] Overall, this utility model relates to a tower-type low-noise multi-stage series fan, including a fan cavity 1 with an internal cavity, an air inlet 101 opened at the top of the fan cavity 1, a motor 3 disposed in the fan cavity 1, a connecting cavity 2 fixedly connected to the motor 3 cavity, and a plurality of fan components 7 sequentially connected to one end of the connecting cavity 2. The output end of the motor 3 is fixedly provided with a rotating shaft 5, and the fan components 7 are disposed on the rotating shaft 5. The fan components 7 are arranged in three groups in sequence.

[0033] like Figures 1 to 3 As shown, the fan assembly 7 includes a mounting sleeve 701, which contains an air guide assembly and a fan assembly. The fan assembly includes a first housing 702, fan blades 703, and a first rotating plate 704. The first housing 702 is fixedly disposed within the mounting sleeve 701. The first rotating plate 704 is disposed at the center of the mounting sleeve 701 by a fixing assembly. The first rotating plate 704 is fixedly connected to the rotating shaft 5 and rotatably connected to the fixing assembly. Multiple fan blades 703 are fixedly and inclinedly disposed on the periphery of the first rotating plate 704. The mounting sleeves 701 are arranged in a connected manner.

[0034] In this embodiment, the multi-stage series-connected fan assembly 7 effectively accelerates and pressurizes the air at each stage, thereby improving the overall airflow and pressure output of the fan. This not only meets the application requirements for high airflow and high pressure but also reduces energy loss by optimizing the airflow path, significantly improving the fan's energy efficiency. Furthermore, the sequential connection of multiple fan assemblies 7 reduces eddies and turbulence, thus lowering noise levels.

[0035] In detail, the series-connected fans proposed in this embodiment need to be fixedly installed on the top of the work area during operation, and air is introduced through the air inlet 101 on the upper side of the fan chamber 1. This can effectively reduce the impact of noise generated by the fans during operation on the internal environment of the work area. Since sound gradually attenuates with increasing distance during propagation, the noise of the top-mounted fans is naturally reduced before reaching the work area. In addition, the multi-stage series design of the fan assembly 7 itself helps to disperse and reduce noise. The combination of these two factors makes the entire system quieter during operation, providing a more comfortable working environment for the staff.

[0036] Based on the above settings, such as Figure 3 and Figure 4As shown, the air guiding assembly includes a second housing 707, guide vanes 708, and a second rotating plate 709. The second housing 707 is fixedly installed inside the mounting sleeve 701. The second rotating plate 709 is rotatably connected to the rotating shaft 5. The ends of a plurality of guide vanes 708 are fixedly and obliquely arranged around the second rotating plate 709 at intervals. The other end of the guide vanes 708 is fixedly connected to the inner sidewall of the second housing 707. The fan blades 703 and the guide vanes 708 are inclined in opposite directions.

[0037] In this embodiment, the inclined design of the guide vane 708, combined with its fixed connection with the second rotating vane 709 and the second housing 707, enables the airflow to be guided more accurately and smoothly when passing through each stage of the fan assembly 7, reducing eddies and turbulence, improving the uniformity and stability of the airflow, and thus reducing the noise caused by airflow turbulence.

[0038] When motor 3 starts, rotating shaft 5 drives fan blades 703 in fan assembly 7 to rotate, drawing airflow into the interior through air inlet 101. Guide vanes 708 in each stage of fan assembly 7 guide and adjust the airflow, ensuring it flows at a stable speed and direction to the next stage of fan assembly 7 or the final outlet. It should be noted that in fan assembly 7, the air guide assembly is located behind the fan assembly.

[0039] Among them, such as Figure 3 As shown, the fixing assembly includes a mounting ring 705 rotatably sleeved on the outer circumference of the first rotating piece 704, and the mounting ring 705 is fixedly connected to the mounting sleeve 701 via a mounting rod 706.

[0040] In this embodiment, the fixing component serves to secure the fan assembly, enhancing the structural stability of the fan assembly 7. This ensures that the first rotating blade 704 remains stable during high-speed rotation, reducing vibration and swaying, and extending the service life of the fan assembly 7.

[0041] In practice, after the motor 3 starts, it will drive the first rotating plate 704 to rotate within the mounting ring 705, thereby driving the fan blade 703 to rotate and generating airflow.

[0042] It needs to be further explained that, such as Figure 2 As shown, a support assembly 6 is provided inside the communicating cavity 2, which can support the rotating shaft 5. The support assembly 6 includes a connecting sleeve 601 and a connecting rod 602. The connecting sleeve 601 is rotatably fitted onto the part of the rotating shaft 5 located inside the communicating cavity 2, and the connecting sleeve 601 is fixedly connected to the inner wall of the communicating cavity 2 through the connecting rod 602.

[0043] When the fan assembly 7 is running, the rotating shaft 5 needs to withstand the load from components such as the fan blades 703 and guide vanes 708. The support assembly 6 provides additional support and stability to the rotating shaft 5 through the connecting sleeve 601 and the connecting rod 602, ensuring the stability of the rotating shaft 5 when rotating at high speed.

[0044] In this embodiment, the end of the fan assembly 7 furthest from the fan cavity 1 is fixedly connected to an air passage cavity 9. This arrangement optimizes the airflow distribution, allowing the airflow to be further combed and homogenized before leaving the fan assembly 7. A support assembly 6 can be installed inside the air passage cavity 9 depending on the actual situation; no further limitations are made here.

[0045] It should be noted that, as Figure 2 As shown, a base pad 4 is fixedly installed at the bottom of the motor 3, and the base pad 4 is fixedly connected to the bottom surface of the fan cavity 1. This tight connection with the bottom surface of the fan cavity 1 provides stable support for the motor 3. This design effectively reduces the vibration and shaking that the motor 3 may experience during operation, ensuring stable operation of the motor 3 and extending its service life.

[0046] Since this device is installed on the top of the work environment, in order to prevent debris from falling into the fan cavity 1, a filter screen 102 is fixedly provided at the air inlet 101 in this embodiment.

[0047] Furthermore, based on the above settings, such as Figure 2 and Figure 6 As shown, the fan components 7 are connected to each other and to the connecting cavity 2 via positioning components 8. Positioning components 8 include protrusions 802 and inner grooves 801. The protrusions 802 are fixedly and symmetrically arranged on the side wall of the mounting sleeve 701. The inner grooves 801 are opened on the other side of the mounting sleeve 701 and the side wall of the connecting cavity 2. The inner grooves 801 match the protrusions 802.

[0048] Through the design of the positioning component 8, precise positioning and stable connection can be achieved between the fan components 7 and between the fan components 7 and the connecting cavity 2. The matching design of the protrusion 802 and the inner groove 801 ensures that the components can be accurately aligned during assembly, avoiding assembly problems caused by misalignment, while providing reliable connection strength, ensuring the overall stability and operating efficiency of the fan system.

[0049] It should be further noted that the fan components 7 are preferably connected by flanges, the fan components 7 are connected to the connecting cavity 2, and the fan components 7 are connected to the air passage cavity 9. Of course, other methods can also be used for connection, which are not further limited here.

[0050] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tower-type low-noise multi-stage series fan, characterized in that: It includes a fan cavity (1) with an internal cavity, an air inlet (101) opened at the top of the fan cavity (1), a motor (3) installed in the fan cavity (1), a connecting cavity (2) fixedly connected to the motor (3) cavity, and a plurality of fan assemblies (7) sequentially connected to one end of the connecting cavity (2). The output end of the motor (3) is fixedly provided with a rotating shaft (5), and the fan assembly (7) is installed on the rotating shaft (5). The fan assembly (7) is arranged in three groups in sequence. The fan assembly (7) includes a mounting sleeve (701), which contains an air guide assembly and a fan assembly. The fan assembly includes a first housing (702), fan blades (703), and a first rotating plate (704). The first housing (702) is fixedly disposed inside the mounting sleeve (701). The first rotating plate (704) is disposed at the center of the mounting sleeve (701) by a fixing assembly. The first rotating plate (704) is fixedly connected to the rotating shaft (5) and rotatably connected to the fixing assembly. Multiple fan blades (703) are fixedly disposed at intervals on the periphery of the first rotating plate (704). The mounting sleeves (701) are arranged in a connected manner.

2. The tower-type low-noise multi-stage series fan according to claim 1, characterized in that: The air guide assembly includes a second housing (707), a guide vane (708), and a second rotating blade (709). The second housing (707) is fixedly disposed inside the mounting sleeve (701). The second rotating blade (709) is rotatably connected to the rotating shaft (5). Multiple guide vanes (708) are obliquely and fixedly disposed at intervals around the second rotating blade (709). The other end of the guide vane (708) is fixedly connected to the inner sidewall of the second housing (707). The fan blades (703) and guide vanes (708) are tilted in opposite directions.

3. A tower-type low-noise multi-stage series fan according to claim 1, characterized in that: The fixing component includes a mounting ring (705) rotatably sleeved on the outer circumference of the first rotating piece (704), and the mounting ring (705) is fixedly connected to the mounting sleeve (701) by a mounting rod (706).

4. A tower-type low-noise multi-stage series fan according to claim 1, characterized in that: The connecting cavity (2) is provided with a support assembly (6), which includes a connecting sleeve (601) and a connecting rod (602). The connecting sleeve (601) is rotatably fitted onto the part of the rotating shaft (5) located inside the connecting cavity (2). The connecting sleeve (601) is fixedly connected to the inner wall of the connecting cavity (2) through the connecting rod (602).

5. A tower-type low-noise multi-stage series fan according to claim 1, characterized in that: The end of the fan assembly (7) at the end and the end away from the fan cavity (1) is fixedly connected to an air passage cavity (9).

6. A tower-type low-noise multi-stage series fan according to claim 1, characterized in that: The bottom of the motor (3) is fixedly provided with a bottom pad (4), and the bottom pad (4) is fixedly connected to the bottom surface of the fan cavity (1).

7. A tower-type low-noise multi-stage series fan according to claim 1, characterized in that: A filter screen (102) is fixedly installed at the air inlet (101).

8. A tower-type low-noise multi-stage series fan according to claim 1, characterized in that: The fan components (7) are connected to each other and to the connecting cavity (2) via positioning components (8); The positioning component (8) includes a protrusion (802) and an inner groove (801). The protrusion (802) is fixedly and symmetrically arranged on the side wall of the mounting sleeve (701). The inner groove (801) is opened on the other side of the mounting sleeve (701) and the side wall of the connecting cavity (2). The inner groove (801) matches the protrusion (802).

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