A fan assembly

Abstract

The application relates to the technical field of railway sewage treatment, in particular to a fan unit. The application provides a fan unit which comprises a connecting pipe and components such as a fan. The parallel and inclined channel design of the connecting pipe can guide the stable flow of gas, reduce energy loss, and the slope of the inclined channel can promote the gathering of water vapor to the separator to improve the separation efficiency; the through hole is located at the end of the inclined channel close to the separator, a local negative pressure is formed when the fan is started, the gas passes through the separator is accelerated, and the water vapor is condensed and separated by using the flow rate difference, so that the first pipe body is prevented from being blocked; the axial direction of the fan is adapted to the inclined direction of the inclined channel, the air extraction direction is consistent with the airflow, so that the resistance is reduced and the vacuum establishment is accelerated.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of railway sewage treatment, in particular to a fan unit. BACKGROUND

[0002] In the railway passenger train excrement collection system, the current common sewage treatment scheme is to use air as the power source. This kind of scheme usually uses a vacuum generator and a separator assembly as core elements, establishes a vacuum environment in the sewage tank or transfer tank, realizes the functions of sewage extraction and sewage transfer of the toilet, and is a common technical path in the current industry.

[0003] The existing technology has the following defects: if the sewage tank is directly vacuumed, the gas consumption is extremely high, and the use of a transfer tank for transfer will significantly increase the space occupation. When the vacuum generator is installed on the train, a large number of air lines are needed to connect the on-train equipment and the sewage tank, and the layout of the pipe penetrating the train body not only consumes time and effort, but also significantly increases the risk of leakage points, affecting the reliability of the system. SUMMARY

[0004] In order to solve the technical problems involved in the background art, the present application provides a fan unit, which comprises a shell, a connecting pipe, a fan and a separator. The connecting pipe is arranged in the shell. The connecting pipe has at least one parallel channel relative to the first direction and at least one inclined channel relative to the first direction. One end of the parallel channel is connected with the separator, and the other end is connected with the inclined channel. A through hole is formed in one end of the inclined channel close to the separator, and the other end is connected with a first pipe body. The fan is arranged in the inclined channel. The fan starts to discharge gas to the first pipe body through the separator. A water receiving box is fixedly connected to the bottom of the separator. A hole is formed in the side surface of the water receiving box. A ventilation pipe is inserted into the hole. The gas passes through the ventilation pipe, the separator and the fan in sequence and is discharged from the first pipe body. The separator comprises an outer shell. The radius of the outer shell gradually decreases along the movement path of the gas flow in the separator. The separator further comprises a first separation assembly and a second separation assembly. The first separation assembly is arranged on the side of the outer shell away from the water receiving box. The second separation assembly is arranged on the side of the outer shell close to the water receiving box.

[0005] According to an embodiment provided by the present application, the fan comprises a first cover and a second cover. The first cover is sleeved outside the second cover. Ventilation holes with the same axis are formed in the middle of the first cover and the second cover. A impeller is arranged in the ventilation hole at one end of the second cover away from the first cover. A power source is mounted in the middle of the impeller.

[0006] According to an embodiment provided by the present application, a support frame is arranged in the annular area between the impeller and the power source. One end of the support frame is connected with an end cover. The end cover is connected with one end of the second cover. The other end of the support frame is connected with the end surface of the impeller.

[0007] According to one embodiment provided by the present application, the impeller is provided with a first pipe body on one side, and the impeller and the first pipe body have a gap therebetween, and the inner diameter of the first pipe body near one end of the impeller is greater than the outer diameter of the second cover body, and the inner diameter of the first pipe body gradually decreases in the extension direction of the pipeline.

[0008] According to one embodiment provided by the present application, the second separation assembly comprises a first partition plate and a second partition plate, the first partition plate is fixedly connected with the second partition plate, a hole body is formed in the middle of the first partition plate, the second partition plate has a conical plate body extending towards the water receiving box, a drainage hole is arranged in the middle of the conical plate body, and a circular ring structure is arranged at the other end of the conical plate body, and the gas flows into the shell through the gap between the first partition plate and the conical plate body and the gap between the circular ring structure and the shell.

[0009] According to one embodiment provided by the present application, the first separation assembly has a flow collecting assembly and an annular plate, the flow collecting assembly is fixedly connected with the annular plate, the annular plate is connected with the shell and forms a certain gap, the flow collecting assembly has a conical structure extending towards one side of the second separation assembly, a flow collecting hole is formed in the middle of the conical structure, and the liquid droplets formed in the connecting pipe flow into the water receiving box through the flow collecting hole in the flow collecting assembly and the second separation assembly.

[0010] According to one embodiment provided by the present application, the outer surface of the inclined channel part of the connecting pipe is provided with a connecting piece, one end of the connecting piece penetrates into the connecting pipe, and the other end of the connecting piece is connected with a vacuum gauge to observe the working condition of the fan.

[0011] According to one embodiment provided by the present application, the sidewall of the water receiving box away from the separator is provided with a liquid level sensor, and the bottom of the water receiving box away from the separator is provided with a heating sheet.

[0012] Compared with the prior art, the significant technical progress of the present application is that the parallel and inclined channel design of the connecting pipe can guide the smooth flow of the gas, reduce energy loss, and the slope of the inclined channel can promote the water vapor to converge to the separator to improve the separation efficiency; the through hole is located at the end of the inclined channel near the separator, and when the fan is started, a local negative pressure is formed to accelerate the gas to pass through the separator and make the water vapor condense and separate by using the flow rate difference, thereby preventing the first pipe body from being blocked; the axial direction of the fan is adapted to the inclined direction of the inclined channel, and the air extraction direction is consistent with the airflow to reduce the resistance and accelerate the establishment of vacuum. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0014] Figure 1 A structural schematic diagram of a fan unit according to an embodiment of the present application;

[0015] Figure 2 A structural schematic diagram of a fan unit according to an embodiment of the present application; Figure 1 A structural schematic diagram of a fan unit according to an embodiment of the present application;

[0016] Figure 3 A structural schematic diagram of a fan unit according to an embodiment of the present application; Figure 2 A structural schematic diagram of a fan unit according to an embodiment of the present application;

[0017] Figure 4 A structural schematic diagram of a fan according to an embodiment of the present application;

[0018] Figure 5 A structural schematic diagram of a fan according to an embodiment of the present application;

[0019] Figure 6 A structural schematic diagram of a fan according to an embodiment of the present application;

[0020] Figure 7 A structural schematic diagram of a fan according to an embodiment of the present application;

[0021] Explanation of reference signs:

[0022] 100 - shell cover; 110 - connecting pipe; 120 - through hole; 130 - first pipe body; 200 - fan; 210 - first cover body; 220 - second cover body; 230 - impeller; 240 - support frame; 300 - separator; 310 - outer shell; 320 - first separation assembly; 321 - flow collecting assembly; 322 - annular plate; 330 - second separation assembly; 331 - first separation plate; 332 - second separation plate; 400 - water collecting box; 410 - ventilation pipe.

[0023] The specific embodiments of the present application have been shown and described in the above-described drawings, and will be described in more detail hereinafter. These drawings and written descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be described clearly and completely below in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without any creative labor fall within the scope of protection of the present application.

[0025] First, those skilled in the art should understand that the embodiments are only used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application. Those skilled in the art can make adjustments as needed to adapt to specific application occasions.

[0026] Secondly, it should be noted that in the description of the present application, the terms "front", "back", "left", "right", "up", "down", "inner", "outer" and other terms indicating the direction or position relationship are based on the direction or position relationship shown in the drawings, which is only for the convenience of description, and is not intended to indicate or imply that the device or member must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0027] In addition, it should be noted that in the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be the communication inside two components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0029] In the railway passenger train excrement collection system, the excrement treatment scheme using air as the power source is currently widely used. Such a scheme usually uses a vacuum generator and a separator assembly as core elements, establishes a vacuum environment in the excrement tank or transfer tank, realizes the excrement pumping and excrement transfer function of the toilet, and is a more common technical path in the current industry.

[0030] The prior art has the following defects: if the excrement tank is directly vacuumed, the gas consumption is extremely high, and the use of a transfer tank for transfer will significantly increase the space occupation. When the vacuum generator is installed on the train, a large number of air lines are needed to connect the on-train equipment and the excrement tank, and the layout of the pipe penetrating the train body not only consumes time and effort, but also significantly increases the risk of leakage points, affecting the reliability of the system.

[0031] Figure 1 A structural schematic diagram of a fan unit provided by an embodiment of the present application; Figure 2 For Figure 1A structural schematic diagram of a fan unit after removing the shell cover; Figure 3 As Figure 2 A structural schematic diagram of a fan unit after removing the connecting pipe; Figure 4 A structural schematic diagram of a fan provided by an embodiment of the present application; Figure 5 A structural schematic diagram of a fan provided by an embodiment of the present application from another perspective; Figure 6 A structural schematic diagram of a fan provided by an embodiment of the present application; Figure 7 A structural schematic diagram of a cross section of a separator and a water collecting box.

[0032] As Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 As shown in the background art, in order to solve the technical problems involved in the above background art, the present application provides a fan unit, which comprises a shell cover 100, a connecting pipe 110, a fan 200 and a separator 300. The connecting pipe 110 is arranged in the shell cover 100. The connecting pipe 110 has at least one channel parallel or approximately parallel to a first direction and at least one channel 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. A through hole 120 is formed at one end of the inclined channel close to the separator 300, and the other end is connected to a first pipe body 130. The fan 200 is arranged in the inclined channel. When the fan 200 is started, the gas passes through the separator 300 and then is discharged to the first pipe body 130 through the through hole 120.

[0033] It should be noted that the first direction in the present application is the X direction shown in the above Figure 2 The one channel of the connecting pipe 110 is parallel or approximately parallel to the X direction, and the angle of approximation can be 1°, 2°, 3°, 4° or 5°. The other channel is arranged to be inclined to the X direction. The parallel channel and the inclined channel in the connecting pipe 110 can guide the gas to flow smoothly along the first direction, reducing the energy loss caused by airflow turbulence. At the same time, the slope of the inclined channel can promote the water vapor in the gas to converge to the separator 300 during the flow process, improving the steam-water separation efficiency.

[0034] Further, the through hole 120 is formed at one end of the inclined channel close to the separator 300. When the fan 200 is started, a local negative pressure can be formed in this area, accelerating the rate at which the gas passes through the separator 300. At the same time, the use of the airflow velocity difference makes it easier for the water vapor to condense and separate in the separator 300, avoiding the water vapor from entering the first pipe body 130 and causing pipeline blockage.

[0035] Further, the fan 200 is arranged in the inclined channel, and an axial direction of the fan 200 is adapted to an inclined direction of the inclined channel, so that the air suction direction of the fan 200 is consistent with the natural flow direction of the gas, the air flow resistance is reduced, and the vacuum establishment speed is improved.

[0036] Further, the shell 100 protects the internal connecting pipe 110, the fan 200 and the separator 300, and the structure can be adapted to the installation space of the railway passenger car, the external pipeline connection is reduced, the complexity of the layout through the car body is reduced, the leakage points are reduced, and the overall weight is reduced.

[0037] Further, the connection mode of the inclined channel and the first pipe body 130 can make the flow direction of the exhaust gas more consistent with the pipeline layout of the dirt tank, cooperate with the large flow negative pressure provided by the fan 200, adapt to the setting requirement of the long dirt discharge pipe, and avoid the risk of positive pressure back spray.

[0038] According to an embodiment provided by the application, the fan 200 includes a first cover body 210 and a second cover body 220, the first cover body 210 is sleeved outside the second cover body 220, and the first cover body 210 and the second cover body 220 are provided with a ventilation hole with the same axis at the middle part, the ventilation hole at the end of the second cover body 220 away from the first cover body 210 is provided with an impeller 230, and the middle part of the impeller 230 is provided with a power source.

[0039] It should be noted that the power source installed in the middle part of the impeller 230 is an integrated assembly of the power supply and the transmission device for starting the rotation of the impeller 230 component, and it can be clearly understood that the fan 200 in the application does not need external air to pass through, and only needs to provide a power supply to normally start the work of the impeller 230, and the working principle can refer to the working mode of the existing brushless fan. The nested structure of the first cover body 210 and the second cover body 220 forms double-layer protection, which can enhance the structural strength of the fan 200, effectively resist the vibration impact in the running of the railway passenger car, isolate the noise during the operation of the impeller 230, and reduce the overall operation noise of the unit.

[0040] Further, the ventilation holes coaxially arranged at the middle parts of the two can guide the airflow to flow linearly along the axial direction, reduce the energy loss caused by airflow deflection, cooperate with the rotation direction of the impeller 230, form a smooth air suction channel, and improve the air suction efficiency and the vacuum establishment speed of the fan 200.

[0041] The nested structure of the first cover body 210 and the second cover body 220 forms double-sealing space, which can block impurities such as dust and water vapor from entering the operation area of the impeller 230, reduce the imbalance of the dynamic balance of the impeller 230 caused by impurity adhesion, reduce the risk of failure caused by foreign matter jamming, and ensure the long-term stable operation of the fan 200.

[0042] Further, the coaxial vent guides the airflow to flow linearly, so that the airflow maintains a stable speed direction before entering the impeller 230, avoiding uneven force on the blades of the impeller 230 due to airflow turbulence, reducing blade fatigue damage, and prolonging the service life of the impeller 230.

[0043] Further, the power source is installed in the middle of the impeller 230, so that the driving force directly acts on the rotation center of the impeller, reducing the moment loss, improving the energy conversion efficiency, and reducing the vibration amplitude of the power source during operation, further enhancing the operation stability of the fan 200.

[0044] In the present application, the impeller 230 is installed in the vent at the end of the second cover 220 away from the first cover 210, and the layout of the central power source can make the impeller 230 rotate uniformly and reduce the vibration amplitude during operation.

[0045] In addition, the gap between the double-layer cover can form a buffer space, when a small amount of water vapor remaining 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 of the water vapor with the impeller 230 or the power source, and improving the durability of the fan 200.

[0046] According to an embodiment provided by the present application, an annular area between the impeller 230 and the power source is provided with a support frame 240, one end of the support frame 240 is connected with an end cover, the end cover is connected with one end of the second cover 220, and the other end of the support frame 240 is connected with an end surface of the impeller 230.

[0047] It should be noted that the support frame 240 is fixedly connected with the second cover 220 through the end cover, which can effectively suppress the radial vibration of the impeller 230 during high-speed rotation, avoid friction between the impeller 230 and the inner wall of the second cover 220, and improve the stability of the fan 200 during operation.

[0048] Further, the support frame 240 in the annular area adopts a spoke structure, which can fix the impeller 230 while reducing the obstruction to the airflow, ensuring that the resistance of the airflow through the vent is minimized, and maintaining the pumping efficiency of the fan 200.

[0049] According to an embodiment provided by the present application, one side of the impeller 230 is provided with a first pipe body 130, the impeller 230 and the first pipe body 130 have a gap therebetween, the inner diameter of the first pipe body 130 near one end of the impeller 230 is greater than the outer diameter of the second cover 220, and the inner diameter of the first pipe body 130 gradually decreases in the extension direction of the pipeline.

[0050] Further, from the perspective of the fan 200, the first pipe body 130 is arranged on one side of the impeller 230, and the gap between the impeller 230 and the first pipe body 130 can form a buffer space, so that the water vapor remaining in the airflow can condense on the inner wall of the first pipe body 130 and flow back to the separator 300 along the inclined channel, avoiding direct contact of the water vapor with the impeller 230 or the power source, and improving the durability of the fan 200. Figure 2 and Figure 3As can be seen, the bottom of the fan 200 is not directly sleeved on one end of the first pipe body 130, and there is a distance between the bottom of the fan 200 and the end of the first pipe body 130 close to the side of 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 pipe body 130 described in the above scheme refers to the distance between the end of the first pipe body 130 and the bottom of the impeller 230. The gap between the impeller 230 and the first pipe body 130 can avoid friction between the impeller 230 and the first pipe body 130 when the impeller 230 rotates at high speed, reduce vibration noise, prevent component wear, and improve the reliability of the fan 200.

[0051] It should be noted that the extension direction of the extension pipe here refers to the Y direction in Figure 2 The inner diameter of the end of the first pipe body 130 close to the impeller 230 is greater than the outer diameter of the second cover body 220, forming a flared structure, which can reduce the local resistance when the gas flows from the outlet of the second cover body 220 into the first pipe body 130, make the gas flow more smoothly into the pipeline, and improve the gas pumping efficiency.

[0052] According to an embodiment provided by the present application, the bottom of the separator 300 is fixedly connected with a water collecting box 400, and a hole body is formed in the side surface of the water collecting box 400. A ventilation pipe 410 is inserted into the hole body. The gas sequentially passes through the ventilation pipe 410, the separator 300 and the fan 200, and is discharged from the first pipe body 130.

[0053] It should be noted that the bottom of the separator 300 is fixedly connected with the water collecting box 400, forming a top-down condensate water flow path, so that the water vapor condensed when the gas flows through the separator 300 can automatically flow into the water collecting box 400 by gravity, without the need for additional power components, thereby improving the system integration.

[0054] Further, the ventilation pipe 410 inserted into the side surface of the water collecting box 400 makes the gas pass through the ventilation pipe 410 before entering the separator 300, and uses the flow velocity to disturb the accumulated water in the water collecting box 400, in combination with the evaporation function of the heating sheet, to accelerate the evaporation of the water vapor and discharge it with the airflow, thereby preventing the water collecting box 400 from overflowing.

[0055] Further, the path of the gas sequentially passing through the ventilation pipe 410, the separator 300 and the fan 200 forms a multi-stage processing flow of “pre-separation-precision separation-pumping”: the pipe diameter and flow direction of the ventilation pipe 410 can preliminarily block larger droplets, the separator 300 further separates fine water vapor, reduces the risk of water vapor entering the fan 200, and improves the durability of the fan 200.

[0056] According to an embodiment provided by the present application, the separator 300 comprises a housing 310, the radius of the housing 310 gradually decreases along the movement path of the airflow in the separator 300, and the separator 300 further comprises a first separation assembly 320 and a second separation assembly 330, the first separation assembly 320 is arranged on the side of the housing 310 away from the water collecting box 400, and the second separation assembly 330 is arranged on the side of the housing 310 close to the water collecting box 400.

[0057] It should be noted that the design of the gradually tapered radius of the housing 310 along the airflow path utilizes the principle of fluid dynamics to make the airflow form accelerated motion in the separator 300, and the centrifugal force increases with the decrease of the radius, which promotes the water vapor to condense more efficiently on the inner wall of the housing 310, and the condensed water slides along the tapered housing to the water collecting box 400, thereby improving the efficiency of water vapor separation.

[0058] Further, the first separation assembly 320 is arranged on the side of the housing 310 away from the water collecting box 400, which can first intercept and separate larger droplets in the airflow, and the second separation assembly 330 is arranged close to the water collecting box 400, which further filters fine water mist and reduces the risk of water vapor entering the fan 200, thereby prolonging the service life of the equipment.

[0059] In addition, it should be noted that the two-stage separation assembly of the separator 300 forms a staged processing mode, which can greatly reduce the probability of water vapor passing through the separation structure, avoid the water vapor that has not been separated from entering the subsequent pipeline of the equipment, reduce the problem of pipeline blockage or functional failure caused by water vapor residue, and ensure the smoothness of the overall pipeline system of the equipment. The tapered radius of the housing 310 makes the airflow maintain an orderly flow state in the separator 300, thereby reducing the noise generated by the airflow impacting the components.

[0060] Moreover, the condensed water slides along the inner wall of the housing 310 to the water collecting box 400, which can maintain a dry environment inside the separator 300, avoid the corrosion or material aging of the components caused by water retention, and prolong the service life of the separator 300 itself. The dry airflow after being processed by the separator 300 enters the fan 200, which can reduce the erosion of the internal components of the fan 200 by water vapor, reduce the probability of fan 200 failure caused by water vapor, and reduce the number of equipment downtime maintenance. The integrated structure design of the separator 300 reduces the connection nodes inside the equipment, reduces the risk of air leakage caused by loose components or seal failure, improves the overall air tightness of the equipment, and ensures the efficient circulation of the airflow in the system.

[0061] According to an embodiment provided by the application, the second separation assembly 330 comprises a first partition plate 331 and a second partition plate 332, the first partition plate 331 is fixedly connected with the second partition plate 332, a hole body is arranged in the middle of the first partition plate 331, the second partition plate 332 has a conical plate body extending to the water receiving box 400, a drainage hole is arranged in the middle of the conical plate body, and a circular ring structure is arranged at the other end of the conical plate body; the gas flows into the shell 310 through the gap between the first partition plate 331 and the conical plate body and the gap between the circular ring structure and the shell 310.

[0062] It should be noted that the plate body described above is a conical structure extending to the water receiving box, a drainage hole is arranged in the middle of the head of the conical structure, and a circular ring structure is arranged outside the other end of the plate body, that is, the end away from the water receiving box 400; the gap between the first partition plate 331 and the conical plate body cooperates with the gap between the circular ring structure and the shell 310 to form a double-path gas flow channel, so that the gas generates a turbulent flow effect when flowing through the second separation assembly 330, increases the collision probability of water vapor and the surface of the plate body, promotes the condensation of fine mist and the sliding of the fine mist along the conical plate body to the water receiving box 400, and improves the fine separation efficiency.

[0063] Further, the design that the conical plate body extends to the water receiving box 400 utilizes the slope of the conical surface to guide the directional flow of the condensed water, and the conical surface structure can increase the contact area of the gas and the plate body, thereby strengthening the condensation effect and rapidly guiding the accumulated water into the water receiving box 400 through the drainage hole, so as to avoid the water vapor from entering the fan 200 in the reverse direction with the gas flow.

[0064] Further, the gap between the circular ring structure and the shell 310 can control the flow rate of the gas flow, so that the gas forms a steady flow when entering the shell 310, and the centrifugal force generated by the tapered structure of the shell 310 further separates the residual water vapor.

[0065] In addition, the fixed connection structure of the first partition plate 331 and the second partition plate 332 forms a detachable assembly, which can be directly disassembled as a whole from the end of the shell 310 when it is necessary to clean the dirt condensed on the surface of the plate body or replace the separation assembly, without the need to disassemble other parts of the separator 300.

[0066] Further, the drainage hole in the middle of the conical plate body corresponds to the position of the water receiving box 400, so that the condensed water can automatically flow into the water receiving box 400 by gravity, without the need for additional power components, thereby reducing the energy consumption of the system; at the same time, the diameter design of the drainage hole can avoid gas short circuiting, and ensure that the gas flow must pass through the double-gap channel to complete the separation process.

[0067] According to an embodiment provided by the application, the first separation assembly 320 has a flow collection assembly 321 and an annular plate 322, the flow collection assembly 321 is fixedly connected with the annular plate 322, the annular plate 322 is connected with the shell 310 and forms a gap, the flow collection assembly 321 has a tapered structure extending towards the second separation assembly 330, a flow collection hole is formed in the middle of the tapered structure, and the liquid droplets formed in the connecting pipe 110 flow into the water receiving box 400 through the flow collection hole in the flow collection assembly 321 and the second separation assembly 330.

[0068] It should be noted that the tapered structure of the flow collection assembly 321 extends towards the second separation assembly 330, and the principle of cone surface guidance in fluid dynamics is used to make the larger liquid droplets in the airflow impact the cone surface under the action of inertia and slide along the cone surface, and the liquid droplets are introduced into the second separation assembly 330 in a directional manner through the middle flow collection hole, so that the coarse separation function is realized and the load of the subsequent fine separation assembly is reduced.

[0069] Further, the gap between the annular plate 322 and the shell 310 forms an annular airflow channel, which forces the gas to bypass the flow collection assembly 321 and flow along the gap, and the liquid droplets intercepted by the tapered structure flow into the water receiving box 400 along the inner wall of the annular plate 322 due to the action of gravity, thereby avoiding the liquid droplets entering the downstream assembly along with the airflow.

[0070] Further, the structure of the flow collection hole and the tapered structure accelerates the liquid droplets when passing through the flow collection assembly 321 due to the taper contraction effect, thereby improving the separation efficiency of the liquid droplets and the airflow, and the aperture of the flow collection hole can control the flow of the liquid droplets to prevent backflow of water to the airflow channel.

[0071] Further, when it is necessary to clean the dirt condensed on the cone surface or replace the assembly, the entire assembly can be directly disassembled from the end of the shell 310 without the need to disassemble other parts of the separator 300.

[0072] Further, the gap between the annular plate 322 and the shell 310 cooperates with the tapered shell 310 to form an airflow path, so that the gas generates a preliminary centrifugal separation effect when passing through the first separation assembly 320, and cooperates with the fine separation of the subsequent second separation assembly 330.

[0073] According to an embodiment provided by the application, the outer surface of the inclined channel portion of the connecting pipe 110 is provided with a connecting piece, one end of the connecting piece penetrates into the connecting pipe 110, and the other end of the connecting piece is connected with a vacuum gauge to observe the working condition of the fan 200.

[0074] It should be noted that the design of the connecting piece penetrating through the inclined channel of the connecting pipe 110 enables the vacuum gauge to directly obtain real-time vacuum pressure data in the channel, avoids pressure conduction delay or error caused by external pipelines, and ensures that the operator can accurately monitor the air extraction efficiency of the fan 200 and the vacuum establishment state of the dirt box.

[0075] Further, the connecting piece is installed on the outer surface of the inclined channel, and the part extending into the pipe is streamlined to reduce the obstruction to the airflow, and the natural turbulent effect of the airflow in the inclined channel is utilized to make the vacuum gauge measurement value closer to the actual working pressure, and the data reliability is improved.

[0076] According to an embodiment provided by the application, a liquid level sensor is arranged on the side wall of the water receiving box 400 away from the separator 300, and a heating sheet is installed on the bottom of the water receiving box 400 away from the separator 300.

[0077] It should be noted that the liquid level sensor monitors the water level in the water receiving box 400 in real time, and the heating sheet is automatically activated when the condensed water reaches a threshold, realizing an automatic process of “sensing-heating-evaporation” and avoiding the risk of manual intervention and water overflow.

[0078] Further, the heating sheet is installed on the bottom of the water receiving box 400 away from the separator 300, and directly heats the accumulated water by utilizing the heat conduction principle, and the water vapor can be quickly evaporated by cooperating with the characteristic of small water volume, and the evaporated gas is discharged through the ventilation pipe 410 along the airflow, preventing the water vapor from remaining in the water receiving box 400.

[0079] Among them, the heating sheet is installed on the bottom of the water receiving box 400 away from the separator 300, so that the heat directly acts on the water accumulation area, reduces the conduction loss of heat to the separator 300 direction, ensures that the limited heat energy is concentrated for water evaporation, shortens the single heating treatment time, and reduces the interference to the internal temperature field of the equipment.

[0080] Further, the path of the evaporated water vapor discharged through the ventilation pipe 410 can avoid the water vapor from recondensing in the water receiving box 400 or spreading to the surrounding components, preventing the inner wall of the water receiving box 400 and the surrounding structure from rusting and mildewing due to long-term dampness, and prolonging the service life of the water receiving box 400 and the adjacent components.

[0081] In addition, the real-time monitoring function of the liquid level sensor can accurately capture the water level change trend, and when abnormal water level fluctuation occurs, the separation efficiency state of the separator 300 can be indirectly fed back, providing data support for equipment fault early warning, realizing early identification and troubleshooting of faults.

[0082] Further, the “monitoring-heating-exhaust” closed loop design of the water receiving box 400 does not need to additionally set a drainage pipeline or manually set a drainage port, reduces the arrangement requirement of the external pipeline of the equipment, simplifies the equipment installation process, avoids the risk of blockage of the drainage port due to long-term idling, and improves the compactness and reliability of the equipment structure.

[0083] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the application being indicated by the following claims.

[0084] It is to be understood that the application is not limited to the precise construction herein described and as shown in the attached drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The scope of the application is to be indicated by the appended claims, rather than the description.

Claims

1. A fan assembly, comprising: The utility model provides a shell cover (100), connecting pipe (110), fan (200) and separator (300), connecting pipe (110) is arranged in the shell cover (100), connecting pipe (110) has at least one section relative to the parallel or approximate parallel passage of first direction and at least one section relative to the passage of first direction inclination, the parallel passage one end is connected with the separator (300), the other end is connected with the passage of inclination, the passage of inclination near the one end of separator (300) is provided with through -hole (120), the other end is connected with first pipe body (130), the fan (200) is provided in the passage of inclination, the fan (200) starts and exports gas through the separator (300) to first pipe body (130), the bottom of separator (300) is fixedly connected with water receiving box (400), the side of water receiving box (400) is provided with hole body, and the hole body is inserted with ventilation pipe (410), and the gas passes ventilation pipe (410) and separator (300) and fan (200) in proper order and is discharged from first pipe body (130), and the separator (300) includes shell (310), the radius of shell (310) gradually reduces along the movement path of gas flow in separator (300), and the separator (300) further includes first separation assembly (320) and second separation assembly (330), the first separation assembly (320) is arranged on the side of shell (310) away from water receiving box (400), and the second separation assembly (330) is arranged on the side of shell (310) close to water receiving box (400).

2. A fan assembly according to claim 1, wherein The fan (200) includes a first cover (210) and a second cover (220), the first cover (210) is sleeved outside the second cover (220), and the first cover (210) and the second cover (220) are provided with a ventilation hole with the same axis in the middle, the ventilation hole in the end of the second cover (220) away from the first cover (210) is provided with an impeller (230), and the middle of the impeller (230) is provided with a power source.

3. A fan assembly according to claim 2, wherein, The annular area between the impeller (230) and the power source is provided with a support frame (240), one end of the support frame (240) is connected with an end cover, the end cover is connected with one end of the second cover (220), and the other end of the support frame (240) is connected with the end surface of the impeller (230).

4. A fan assembly according to claim 2, wherein One side of the impeller (230) is provided with the first pipe body (130), and the impeller (230) and the first pipe body (130) have a gap, the inner diameter of the end of the first pipe body (130) close to the impeller (230) is greater than the outer diameter of the second cover (220), and the inner diameter of the first pipe body (130) gradually decreases along the extension direction of the pipeline.

5. A fan assembly according to claim 1, wherein The second separation assembly (330) comprises a first partition plate (331) and a second partition plate (332), the first partition plate (331) is fixedly connected with the second partition plate (332), a hole body is arranged in the middle of the first partition plate (331), the second partition plate (332) has a conical plate body extending to the water receiving box (400), the conical plate body is provided with a drainage hole in the middle, the other end of the conical plate body is provided with a circular ring structure, and the gas flows into the shell (310) through the gap between the first partition plate (331) and the conical plate body and the gap between the circular ring structure and the shell (310).

6. A fan assembly according to claim 1, wherein The first separation assembly (320) has a flow collecting assembly (321) and an annular plate (322), the flow collecting assembly (321) is fixedly connected with the annular plate (322), the annular plate (322) is connected with the shell (310) and forms a gap, the flow collecting assembly (321) has a conical structure extending to one side of the second separation assembly (330), a flow collecting hole is arranged in the middle of the conical structure, and the liquid drops formed in the connecting pipe (110) flow into the water receiving box (400) through the flow collecting hole in the flow collecting assembly (321) and the second separation assembly (330).

7. A fan assembly according to claim 1, wherein An outer surface of the inclined channel part of the connecting pipe (110) is provided with a connecting piece, one end of the connecting piece penetrates into the connecting pipe (110), and the other end of the connecting piece is connected with a vacuum table to observe the working condition of the fan (200).

8. The fan assembly of claim 1, wherein A liquid level sensor is arranged on the side wall of the water receiving box (400) away from the separator (300), and a heating sheet is arranged on the bottom of the water receiving box (400) away from the separator (300).

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