Fan unit

Abstract

The invention relates to the technical field of railway sewage treatment, in particular to a fan unit. The invention provides a fan unit. The fan unit comprises a connecting pipe, a fan and other components. The parallel and inclined channel design of the connecting pipe can guide gas to flow stably, energy loss is reduced, and the gradient of the inclined channel promotes water vapor to converge to the separator so as to improve the separation efficiency; the through hole is located at the end, close to the separator, of the inclined channel, local negative pressure is formed when the draught fan is started, gas penetrates through the separator in an accelerated mode, water vapor is condensed and separated through the flow speed difference, and the first pipe body is prevented from being blocked. The axial direction of the fan is matched with the inclination direction of the inclined channel, and the air exhaust direction is consistent with airflow so as to reduce resistance and accelerate vacuum establishment.

Description

Technical Field

[0001] This application relates to the field of railway waste treatment technology, specifically to a fan unit. Background Technology

[0002] In railway passenger car toilet systems, air-powered waste treatment solutions are currently widely used. These solutions typically utilize vacuum generators and separators as core components. By creating a vacuum environment within the waste tank or transfer tank, they achieve the functions of pumping out and transferring waste from the toilet, which is a common technical approach in the industry.

[0003] The existing technology has the following drawbacks: if the vacuum is drawn directly in the waste tank, the air consumption is extremely high, and if a transfer box is used for transfer, the space occupied will be significantly increased. When the vacuum generator is installed on the vehicle, a large number of air lines are required to connect the equipment on the vehicle to the waste tank. The pipeline layout through the vehicle body is not only time-consuming and labor-intensive, but also greatly increases the risk of leakage and affects the reliability of the system. Summary of the Invention

[0004] To address the technical problems mentioned in the background section, this application provides a fan unit comprising a casing, a connecting pipe, a fan, and a separator. The connecting pipe is disposed within the casing and has at least one section of a channel parallel or approximately parallel to a first direction and at least one section of a channel inclined relative to the first direction. One end of the parallel channel is connected to the separator, and the other end is connected to the inclined channel. A through hole is provided at one end of the inclined channel near the separator, and the other end is connected to a first pipe body. A fan is disposed within the inclined channel. When the fan is activated, it discharges gas through the separator, through the through hole, and into the first pipe body.

[0005] According to one embodiment of this application, the fan includes a first cover and a second cover. The first cover is sleeved on the outside of the second cover, and ventilation holes with the same axis are opened in the middle of the first cover and the second cover. An impeller is provided in the ventilation hole at the end of the second cover away from the first cover, and a power source is installed in the middle of the impeller.

[0006] According to one embodiment of this application, a support frame is provided in the annular area between the impeller and the power source. One end of the support frame is connected to an end cap, which is connected to one end of a second cover. The other end of the support frame is connected to the end face of the impeller.

[0007] According to one embodiment of this application, a first tube is provided on one side of the impeller, there is a gap between the impeller and the first tube, and the inner diameter of the first tube near the impeller is greater than the outer diameter of the second cover, and the inner diameter of the first tube gradually decreases along the pipeline extension direction.

[0008] According to one embodiment of this application, a water receiving box is fixedly connected to the bottom of the separator, and a hole is opened on the side of the water receiving box. A ventilation pipe is inserted into the hole, and the gas passes through the ventilation pipe, the separator and the fan in sequence, and is discharged from the first pipe.

[0009] According to one embodiment of this application, the separator includes a housing, the radius of which gradually decreases along the movement path of the airflow within the separator. The separator also includes a first separation component and a second separation component. The first separation component is disposed on the side of the housing away from the water receiving box, and the second separation component is disposed on the side of the housing close to the water receiving box.

[0010] According to one embodiment of this application, the second separation component includes a first partition plate and a second partition plate, the first partition plate and the second partition plate are fixedly connected, the first partition plate has a hole in the middle, the second partition plate has a conical plate extending toward the water receiving box, the conical plate has a drainage hole in the middle, and the other end of the conical plate has a ring structure. Gas flows into the outer shell through the gap between the first partition plate and the conical plate and the gap between the ring structure and the outer shell.

[0011] According to one embodiment of this application, the first separation component has a flow collecting component and an annular plate. The flow collecting component is fixedly connected to the annular plate, and the annular plate is connected to the outer shell and forms a certain gap. The flow collecting component has a conical structure extending toward the second separation component. A flow collecting hole is opened in the middle of the conical structure. The droplets formed in the connecting pipe flow into the water receiving box through the flow collecting hole in the flow collecting component and the second separation component.

[0012] According to one embodiment of this application, a connector is provided on the outer surface of the inclined channel portion of the connecting pipe. One end of the connector is inserted into the connecting pipe, and the other end of the connector is connected to a vacuum gauge to observe the working status of the fan.

[0013] According to one embodiment of this application, a liquid level sensor is provided on the side wall of the water receiving box away from the separator, and a heating element is installed on the bottom of the water receiving box away from the separator.

[0014] Compared with the prior art, the significant technological advancements of this application are as follows: the parallel and inclined channel design of the connecting pipe can guide the smooth flow of gas, reduce energy loss, and the slope of the inclined channel promotes the convergence of water vapor towards the separator to improve separation efficiency; the through hole is located near the separator end of the inclined channel, forming a local negative pressure when the fan starts, accelerating the gas to pass through the separator and using the velocity difference to cause water vapor to condense and separate, preventing the first pipe body from being blocked; the fan axis is adapted to the inclined direction of the inclined channel, and the air extraction direction is consistent with the airflow to reduce resistance and accelerate vacuum establishment. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a fan unit provided in an embodiment of this application;

[0017] Figure 2 for Figure 1 A schematic diagram of the fan unit after removing the casing;

[0018] Figure 3 for Figure 2 A schematic diagram of the fan unit after removing the connecting pipes;

[0019] Figure 4 This is a schematic diagram of the structure of the fan provided in the embodiments of this application;

[0020] Figure 5 This is a schematic diagram of the structure of the fan provided in an embodiment of this application from another perspective;

[0021] Figure 6 This is a cross-sectional structural diagram of the fan provided in an embodiment of this application;

[0022] Figure 7 This is a cross-sectional schematic diagram of the separator and water receiving box.

[0023] Explanation of reference numerals in the attached figures:

[0024] 100-Shell; 110-Connecting pipe; 120-Through hole; 130-First pipe body; 200-Fan; 210-First cover; 220-Second cover; 230-Impeller; 240-Support frame; 300-Separator; 310-Shell; 320-First separation assembly; 321-Collection assembly; 322-Annular plate; 330-Second separation assembly; 331-First partition plate; 332-Second partition plate; 400-Water receiving box; 410-Ventilation pipe.

[0025] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] First, those skilled in the art should understand that these embodiments are merely for explaining the technical principles of this application and are not intended to limit the scope of protection of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0028] Secondly, it should be noted that in the description of this application, the terms "front", "rear", "left", "right", "up", "down", "inner", "outer", etc., which indicate the direction or positional relationship, are based on the direction or positional relationship shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0029] Furthermore, it should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "connected" and "linked" 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 the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] In the description of this application, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] In railway passenger car toilet systems, air-powered waste treatment solutions are currently widely used. These solutions typically utilize vacuum generators and separators as core components. By creating a vacuum environment within the waste tank or transfer tank, they achieve the functions of pumping out and transferring waste from the toilet, which is a common technical approach in the industry.

[0032] The existing technology has the following drawbacks: if the vacuum is drawn directly in the waste tank, the air consumption is extremely high, and if a transfer box is used for transfer, the space occupied will be significantly increased. When the vacuum generator is installed on the vehicle, a large number of air lines are required to connect the equipment on the vehicle to the waste tank. The pipeline layout through the vehicle body is not only time-consuming and labor-intensive, but also greatly increases the risk of leakage and affects the reliability of the system.

[0033] Figure 1 This is a schematic diagram of the structure of a fan unit provided in an embodiment of this application; Figure 2 for Figure 1 A schematic diagram of the fan unit after removing the casing; Figure 3 for Figure 2 A schematic diagram of the fan unit after removing the connecting pipes; Figure 4 This is a schematic diagram of the structure of the fan provided in the embodiments of this application; Figure 5 This is a schematic diagram of the structure of the fan provided in an embodiment of this application from another perspective; Figure 6 This is a cross-sectional structural diagram of the fan provided in an embodiment of this application; Figure 7 This is a cross-sectional schematic diagram of the separator and water receiving box.

[0034] like Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 As shown, in order to solve the technical problems involved in the background art mentioned above, this application provides a fan unit, which includes a housing 100, a connecting pipe 110, a fan 200, and a separator 300. The connecting pipe 110 is disposed inside the housing 100. The connecting pipe 110 has at least one channel that is parallel or approximately parallel to a first direction and at least one channel that is inclined to the first direction. One end of the parallel channel is connected to the separator 300, and the other end is connected to the inclined channel. The inclined channel has a through hole 120 at one end near the separator 300, and the other end is connected to a first pipe body 130. The fan 200 is disposed inside the inclined channel. When the fan 200 is started, it discharges gas through the separator 300 and then through the through hole 120 to the first pipe body 130.

[0035] It should be noted that the first direction in this application is... Figure 2 As shown in the diagram, one section of the connecting pipe 110 is placed parallel or approximately parallel to the X direction. The approximately parallel angle can be 1°, 2°, 3°, 4°, or 5°. The other section is inclined relative to the X direction. The parallel and inclined channels within the connecting pipe 110 can guide the gas to flow smoothly along the first direction, reducing energy loss caused by airflow turbulence. At the same time, the slope of the inclined channel can promote the convergence of water vapor in the gas towards the separator 300 during the flow process, improving the gas-water separation efficiency.

[0036] Furthermore, the through hole 120 is opened at one end of the inclined channel near the separator 300. When the fan 200 starts, it can form a local negative pressure in this area, which accelerates the rate at which the gas passes through the separator 300. At the same time, the airflow speed difference makes it easier for water vapor to condense and separate in the separator 300, thus preventing water vapor from entering the first pipe body 130 and causing pipeline blockage.

[0037] Furthermore, the blower 200 is installed in the inclined channel, and its axis is adapted to the inclined direction of the inclined channel, so that the air extraction direction of the blower 200 is consistent with the natural flow direction of the gas, reducing airflow resistance and improving the vacuum establishment speed.

[0038] Furthermore, the housing 100 provides protection for the internal connecting pipe 110, fan 200 and separator 300. Its structure can be adapted to the installation space of railway passenger cars, reducing external pipe connections and reducing the complexity of the layout through the car body, thereby reducing leakage points and reducing the overall weight.

[0039] Furthermore, the connection between the inclined channel and the first pipe body 130 allows the flow direction of the discharged gas to better match the pipeline layout of the sludge bin. Combined with the large flow negative pressure provided by the blower 200, it can adapt to the installation requirements of a longer sewage pipe and avoid the risk of positive pressure backflow.

[0040] According to one embodiment of this application, the fan 200 includes a first cover 210 and a second cover 220. The first cover 210 is sleeved on the outside of the second cover 220, and ventilation holes with the same axis are opened in the middle of the first cover 210 and the second cover 220. An impeller 230 is provided in the ventilation hole at the end of the second cover 220 away from the first cover 210, and a power source is installed in the middle of the impeller 230.

[0041] It should be noted that the power source installed in the middle of the impeller 230 in the above-mentioned scheme is an integrated component of the power supply and transmission device for starting the rotation of the impeller 230. It is clear that the fan 200 in this application does not require external air to pass through; it only needs a power supply to start the impeller 230 normally. Its working principle can be referred to the working method of brushless fans in the prior art. The nested structure of the first cover 210 and the second cover 220 forms a double layer of protection, which can enhance the structural strength of the fan 200, effectively resist the vibration and impact during railway passenger car operation, and at the same time isolate the noise of the impeller 230 during operation, reducing the overall operating noise of the unit.

[0042] Furthermore, the ventilation holes coaxially arranged in the middle of the two can guide the airflow to flow in a straight line along the axial direction, reducing the energy loss caused by airflow deflection. Combined with the rotation direction of the impeller 230, a smooth air extraction channel is formed, improving the air extraction efficiency and vacuum establishment speed of the fan 200.

[0043] The nested structure of the first cover 210 and the second cover 220 forms a double-sealed space, which can prevent external dust, water vapor and other impurities from entering the operating area of ​​the impeller 230, reduce the dynamic imbalance of the impeller 230 caused by the attachment of impurities, reduce the risk of failure caused by foreign object jamming, and ensure the long-term stable operation of the fan 200.

[0044] Furthermore, the coaxial ventilation holes guide the airflow in a straight line, ensuring that the airflow maintains a stable speed and direction before entering the impeller 230. This avoids uneven stress on the impeller 230 blades caused by airflow turbulence, reduces blade fatigue damage, and extends the service life of the impeller 230.

[0045] Furthermore, the power source is installed in the middle of the impeller 230, so that the driving force acts directly on the center of rotation of the impeller, reducing torque loss and improving energy conversion efficiency. At the same time, it reduces the amplitude of vibration transmitted to the cover during the operation of the power source, further enhancing the operational stability of the fan 200.

[0046] In this application, the impeller 230 is installed in the ventilation hole at the end of the second cover 220 away from the first cover 210. The layout of its central power source can make the impeller 230 rotate evenly and reduce the vibration amplitude during operation.

[0047] In addition, the gap between the double-layer cover can form a buffer space. When a small amount of water vapor in the airflow enters the fan 200, the water vapor can condense on the inner wall of the double-layer cover and flow back to the separator 300 along the inclined channel, avoiding direct contact between water vapor and impeller 230 or power source, thus improving the durability of the fan 200.

[0048] According to one embodiment of this application, a support frame 240 is provided in the annular area between the impeller 230 and the power source. One end of the support frame 240 is connected to an end cap, which is connected to one end of the second cover 220. The other end of the support frame 240 is connected to the end face of the impeller 230.

[0049] It should be noted that the support frame 240 is fixedly connected to the second cover 220 through the end cover, which can effectively suppress the radial vibration when the impeller 230 rotates at high speed, avoid friction between the impeller 230 and the inner wall of the second cover 220, and improve the stability of the fan 200 operation.

[0050] Furthermore, the support frame 240 in the annular area adopts a spoke-shaped structure, which can reduce the obstruction of airflow while fixing the impeller 230, ensuring that the resistance of airflow is minimized when passing through the ventilation hole, and maintaining the air extraction efficiency of the fan 200.

[0051] According to one embodiment of this application, a first tube 130 is provided on one side of the impeller 230, there is a gap between the impeller 230 and the first tube 130, and the inner diameter of the first tube 130 near the impeller 230 is greater than the outer diameter of the second cover 220, and the inner diameter of the first tube 130 gradually decreases along the pipeline extension direction.

[0052] Furthermore, from Figure 2 and Figure 3 As can be seen, the bottom of the fan 200 is not directly fitted onto one end of the first tube 130. There is a distance between the bottom of the fan 200 and the end of the first tube 130 near the fan 200. The bottom of the fan 200 is also the bottom of the impeller 230. Therefore, the gap between the impeller 230 and the first tube 130 described in the above scheme refers to the distance between one end of the first tube 130 and the bottom of the impeller 230. The gap between the impeller 230 and the first tube 130 can prevent the impeller 230 from rubbing against the first tube 130 when rotating at high speed, reduce vibration and noise, prevent component wear, and improve the reliability of the fan 200 operation.

[0053] It should be noted that the direction of pipeline extension here refers to... Figure 2 In the Y direction, the inner diameter of the first tube 130 near the impeller 230 is larger than the outer diameter of the second cover 220, forming a flared structure. This reduces the local resistance when the airflow enters the first tube 130 from the outlet of the second cover 220, allowing the gas to flow into the pipeline more smoothly and improving the pumping efficiency.

[0054] According to one embodiment of this application, a water receiving box 400 is fixedly connected to the bottom of the separator 300. A hole is opened on the side of the water receiving box 400, and a ventilation pipe 410 is inserted into the hole. Gas passes through the ventilation pipe 410, the separator 300 and the fan 200 in sequence, and is discharged from the first pipe 130.

[0055] It should be noted that the bottom of the separator 300 is fixedly connected to the water collection box 400, forming a top-down condensate flow path. This allows the water vapor condensed when the gas flows through the separator 300 to automatically flow into the water collection box 400 by gravity, eliminating the need for additional power components and improving system integration.

[0056] Furthermore, the ventilation pipe 410 on the side of the water receiving box 400 is installed so that the gas passes through the ventilation pipe 410 before entering the separator 300. The airflow speed is used to disturb the water in the water receiving box 400. In conjunction with the evaporation function of the heating element, the water vapor is accelerated to evaporate and discharged with the airflow, thus preventing the water in the water receiving box 400 from overflowing.

[0057] Furthermore, the gas passes through the ventilation pipe 410, separator 300, and fan 200 in sequence, forming a multi-stage treatment process of "pre-separation-fine separation-extraction": the diameter and flow direction of the ventilation pipe 410 can initially block larger droplets, and the separator 300 further separates fine water vapor, reducing the risk of water vapor entering the fan 200 and improving the durability of the fan 200.

[0058] According to one embodiment of this application, the separator 300 includes a housing 310, the radius of which gradually decreases along the movement path of the airflow within the separator 300. The separator 300 also includes a first separation component 320 and a second separation component 330. The first separation component 320 is disposed on the side of the housing 310 away from the water receiving box 400, and the second separation component 330 is disposed on the side of the housing 310 close to the water receiving box 400.

[0059] It should be noted that the design of the outer shell 310 with a gradually decreasing radius along the airflow path utilizes the principle of fluid dynamics to make the airflow accelerate within the separator 300. The centrifugal force increases as the radius decreases, which promotes water vapor to condense more efficiently on the inner wall of the outer shell 310. The condensed water slides down the gradually decreasing outer shell to the water collection box 400, thereby improving the steam-water separation efficiency.

[0060] Furthermore, the first separation component 320 is located on the side of the housing 310 away from the water receiving box 400, which can first intercept and separate larger droplets in the airflow. The second separation component 330 is arranged close to the water receiving box 400 to further filter fine water mist, reduce the risk of water vapor entering the fan 200, and extend the equipment life.

[0061] Furthermore, it should be noted that the two-stage separation components of separator 300 form a graded processing mode, which can significantly reduce the probability of water vapor passing through the separation structure, prevent unseparated water vapor from entering subsequent pipelines, reduce pipeline blockage or functional failure caused by water vapor residue, and ensure the smooth flow of the overall pipeline system. The gradually decreasing radius of the outer casing 310 keeps the airflow in an orderly manner within separator 300, reducing the noise generated by airflow impacting components.

[0062] Furthermore, the condensate slides down the inner wall of the outer casing 310 to the water collection box 400, maintaining a dry environment inside the separator 300 and preventing component corrosion or material aging caused by moisture retention, thus extending the service life of the separator 300 itself. The dried airflow processed by the separator 300 enters the fan 200, reducing the corrosion of internal components by moisture, lowering the probability of fan 200 failure due to moisture, and reducing the frequency of equipment downtime for maintenance. The integrated structural design of the separator 300 reduces internal connection points, lowering the risk of air leakage caused by loose components or seal failure, improving the overall airtightness of the equipment, and ensuring efficient airflow within the system.

[0063] According to one embodiment of this application, the second separation component 330 includes a first partition plate 331 and a second partition plate 332. The first partition plate 331 and the second partition plate 332 are fixedly connected. The first partition plate 331 has a hole in its middle part. The second partition plate 332 has a conical plate extending toward the water receiving box 400. A drainage hole is provided in the middle part of the conical plate. A ring structure is provided at the other end of the conical plate. Gas flows into the outer shell 310 through the gap between the first partition plate 331 and the conical plate and the gap between the ring structure and the outer shell 310.

[0064] It should be noted that the plate described above is a conical structure extending towards the water receiving box. The middle part of the head of the conical structure has a drainage hole, while the other end of the plate, that is, the end away from the water receiving box 400, has an external connecting ring structure. The gap between the first partition plate 331 and the conical plate matches the gap between the ring structure and the outer shell 310, forming a dual-path airflow channel. This forces the gas to generate a turbulent effect when flowing through the second separation component 330, increasing the probability of water vapor colliding with the plate surface, causing fine water mist to condense and slide down the conical plate to the water receiving box 400, thereby improving the fine separation efficiency.

[0065] Furthermore, the design of the conical plate extending into the water collection box 400 utilizes the slope of the conical surface to guide the condensate flow in a directional manner. At the same time, the conical structure can increase the contact area between the gas and the plate, enhancing the condensation effect. Combined with the drainage holes, the accumulated water is quickly guided into the water collection box 400, preventing water vapor from being rolled back into the fan 200 with the airflow.

[0066] Furthermore, the gap between the annular structure and the outer shell 310 can control the airflow velocity, so that the gas forms a steady flow when entering the outer shell 310. Combined with the centrifugal force generated by the tapered structure of the outer shell 310, residual water vapor is further separated.

[0067] Furthermore, the fixed connection structure between the first partition plate 331 and the second partition plate 332 forms a detachable assembly. When it is necessary to clean the dirt condensed on the surface of the plate or replace the separation assembly, it can be directly disassembled from the end of the outer shell 310 without disassembling other parts of the separator 300.

[0068] Furthermore, the drainage hole in the middle of the conical plate corresponds to the position of the water receiving box 400, allowing condensate to flow into the water receiving box 400 automatically by gravity without the need for additional power components, thus reducing system energy consumption; at the same time, the aperture design of the drainage hole can avoid gas short circuits, ensuring that the airflow must pass through the dual-gap channel to complete the separation process.

[0069] According to one embodiment of this application, the first separation component 320 has a flow collecting component 321 and an annular plate 322. The flow collecting component 321 is fixedly connected to the annular plate 322. The annular plate 322 is connected to the outer shell 310 and forms a certain gap. The flow collecting component 321 has a conical structure extending toward the second separation component 330. A flow collecting hole is opened in the middle of the conical structure. The droplets formed in the connecting pipe 110 flow into the water receiving box 400 through the flow collecting hole in the flow collecting component 321 and the second separation component 330.

[0070] It should be noted that the conical structure of the flow collecting component 321 extends toward the second separation component 330. Utilizing the conical surface guidance principle in fluid dynamics, larger droplets in the airflow impact the conical surface under inertia and slide down along the conical surface. They are then directionally introduced into the second separation component 330 through the central flow collecting hole, achieving the coarse separation function and reducing the load on the subsequent fine separation component.

[0071] Furthermore, the gap between the annular plate 322 and the outer shell 310 forms an annular airflow channel, forcing the gas to bypass the flow collector 321 and flow along the gap. The droplets intercepted by the conical structure flow into the water collection box 400 along the inner wall of the annular plate 322 due to gravity, thus preventing the droplets from entering the downstream components with the airflow.

[0072] Furthermore, the structure of the collecting orifice and the conical structure allows the droplets to be accelerated by the conical surface contraction effect when passing through the collecting component 321, thereby improving the separation efficiency of the droplets and the airflow. At the same time, the orifice diameter can control the droplet flow rate and prevent water from flowing back into the airflow channel.

[0073] Furthermore, when it is necessary to clean the dirt that has condensed on the cone surface or replace components, it can be disassembled directly from the end of the housing 310 without disassembling other parts of the separator 300.

[0074] Furthermore, the gap between the annular plate 322 and the outer shell 310 is matched with the airflow path of the tapered outer shell 310, so that the gas generates a preliminary centrifugal separation effect when passing through the first separation component 320, which is combined with the subsequent fine separation by the second separation component 330.

[0075] According to one embodiment of this application, a connector is provided on the outer surface of the inclined channel portion of the connecting pipe 110. One end of the connector is inserted into the connecting pipe 110, and the other end of the connector is connected to a vacuum gauge to observe the working status of the fan 200.

[0076] It should be noted that the design of the connector through the inclined channel of the connecting pipe 110 allows the vacuum gauge to directly obtain real-time vacuum pressure data within the channel, avoiding pressure transmission delays or errors caused by external piping, and ensuring that operators can accurately monitor the pumping efficiency of the blower 200 and the vacuum build-up status of the waste box.

[0077] Furthermore, the connector is installed on the outer surface of the inclined channel, and the part of it that extends into the tube has a streamlined structure to reduce obstruction to the airflow. At the same time, by utilizing the natural turbulence effect of the airflow in the inclined channel, the vacuum gauge measurement value is made closer to the actual working pressure, thus improving data reliability.

[0078] According to one embodiment of this application, a liquid level sensor is provided on the side wall of the water receiving box 400 away from the separator 300, and a heating element is installed on the bottom of the water receiving box 400 away from the separator 300.

[0079] It should be noted that the liquid level sensor monitors the water level in the water collection box 400 in real time. When the amount of water vapor condensed reaches the threshold, the heating element is automatically activated to realize the automated process of "induction-heating-evaporation" and avoid the risk of manual intervention and water overflow.

[0080] Furthermore, the heating element is installed at the bottom of the water receiving box 400, away from the separator 300, and directly heats the accumulated water using the principle of heat conduction. Combined with the small amount of water, it can quickly evaporate water vapor. The evaporated gas is discharged through the ventilation pipe 410 with the airflow, preventing water vapor from accumulating in the water receiving box 400.

[0081] The heating element is installed at the bottom of the water receiving box 400 away from the separator 300, so that the heat acts directly on the water accumulation area, reducing the heat conduction loss to the separator 300, ensuring that the limited heat energy is concentrated for water evaporation, shortening the single heating treatment time, and reducing interference with the internal temperature field of the equipment.

[0082] Furthermore, the path through which the evaporated water vapor is discharged via the ventilation pipe 410 can prevent the water vapor from recondensing in the water collection box 400 or spreading to surrounding components, thus preventing the inner wall of the water collection box 400 and surrounding structures from rusting and mildewing due to long-term dampness, and extending the service life of the water collection box 400 and adjacent components.

[0083] In addition, the real-time monitoring function of the liquid level sensor can accurately capture the trend of water level changes. When abnormal water level fluctuations occur, it can indirectly provide feedback on the separation efficiency status of the separator 300, providing data support for equipment fault early warning and enabling early identification and troubleshooting of faults.

[0084] Furthermore, the closed-loop design of the water receiving box 400, which integrates "monitoring-heating-venting", eliminates the need for additional drainage pipes or manual drain outlets, reducing the need for external piping and simplifying the installation process. It also avoids the risk of blockage caused by long-term idleness of the drain outlet, thereby improving the compactness and reliability of the equipment structure.

[0085] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0086] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A fan unit, characterized in that, The device includes a housing (100), a connecting pipe (110), a fan (200), and a separator (300). The connecting pipe (110) is disposed inside the housing (100). The connecting pipe (110) has at least one channel that is parallel or approximately parallel to a first direction and at least one channel that is inclined relative to the first direction. One end of the parallel channel is connected to the separator (300), and the other end is connected to the inclined channel. The inclined channel has a through hole (120) at one end near the separator (300), and the other end is connected to a first pipe body (130). The fan (200) is disposed inside the inclined channel. When the fan (200) is started, it discharges gas through the separator (300) and then through the through hole (120) to the first pipe body (130).

2. A fan unit according to claim 1, characterized in that, The fan (200) includes a first cover (210) and a second cover (220). The first cover (210) is sleeved on the outside of the second cover (220), and ventilation holes with the same axis are opened in the middle of the first cover (210) and the second cover (220). An impeller (230) is provided in the ventilation hole at the end of the second cover (220) away from the first cover (210), and a power source is installed in the middle of the impeller (230).

3. A fan unit according to claim 2, characterized in that, A support frame (240) is provided in the annular area between the impeller (230) and the power source. One end of the support frame (240) is connected to an end cap, which is connected to one end of the second cover (220). The other end of the support frame (240) is connected to the end face of the impeller (230).

4. A fan unit according to claim 2, characterized in that, The first tube body (130) is provided on one side of the impeller (230). There is a gap between the impeller (230) and the first tube body (130). The inner diameter of the first tube body (130) near the impeller (230) is larger than the outer diameter of the second cover (220). The inner diameter of the first tube body (130) gradually decreases along the pipeline extension direction.

5. A fan unit according to claim 1, characterized in that, A water receiving box (400) is fixedly connected to the bottom of the separator (300). A hole is opened on the side of the water receiving box (400), and a ventilation pipe (410) is inserted into the hole. The gas passes through the ventilation pipe (410), the separator (300), and the fan (200) in sequence, and is discharged from the first pipe (130).

6. A fan unit according to claim 5, characterized in that, The separator (300) includes a housing (310), the radius of which gradually decreases along the movement path of the airflow within the separator (300). The separator (300) also includes a first separation component (320) and a second separation component (330). The first separation component (320) is disposed on the side of the housing (310) away from the water receiving box (400), and the second separation component (330) is disposed on the side of the housing (310) close to the water receiving box (400).

7. A fan unit according to claim 6, characterized in that, The second separation component (330) includes a first partition plate (331) and a second partition plate (332). The first partition plate (331) and the second partition plate (332) are fixedly connected. The first partition plate (331) has a hole in the middle. The second partition plate (332) has a conical plate extending toward the water receiving box (400). The conical plate has a drainage hole in the middle. The other end of the conical plate has a ring structure. The gas flows into the outer shell (310) through the gap between the first partition plate (331) and the conical plate and the gap between the ring structure and the outer shell (310).

8. A fan unit according to claim 6, characterized in that, The first separation component (320) has a flow collecting component (321) and an annular plate (322). The flow collecting component (321) is fixedly connected to the annular plate (322). The annular plate (322) is connected to the outer shell (310) and forms a certain gap. The flow collecting component (321) has a conical structure extending toward the second separation component (330). A flow collecting hole is opened in the middle of the conical structure. The droplets formed in the connecting pipe (110) flow into the water receiving box (400) through the flow collecting hole in the flow collecting component (321) and the second separation component (330).

9. A fan unit according to claim 1, characterized in that, The outer surface of the inclined channel portion of the connecting pipe (110) is provided with a connector. One end of the connector is inserted into the connecting pipe (110), and the other end of the connector is connected to a vacuum gauge to observe the working status of the fan (200).

10. A fan unit according to claim 1, characterized in that, A liquid level sensor is provided on the side wall of the water receiving box (400) away from the separator (300), and a heating element is installed on the bottom of the water receiving box (400) away from the separator (300).

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