Guide structure of gas-liquid separation device and surface cleaning device

Abstract

The utility model discloses a guide structure of a gas-liquid separation device and a surface cleaning device.The gas-liquid separation device comprises a box body, a filter cavity and a first channel are arranged in the box body, the first channel communicates with the filter cavity, a mixture enters the filter cavity through the first channel so as to separate solids from fluids, and the solids are separated from the fluids through the first channel; a filter cavity is formed in the box body, a first outlet is formed in the filter cavity, the first outlet is used for discharging fluid out of the filter cavity, a guide plate is arranged between the outer wall of the filter cavity and the inner wall of the box body, and the outer wall of the filter cavity and the inner wall of the box body are connected through the guide plate to form a second channel for the fluid to flow; the second channel is used for conveying fluid and enabling the fluid to be subjected to gas-liquid separation, the guide plate is arranged between the inner wall of the box body and the outer wall of the filtering cavity to form the second channel, gas-liquid separation is achieved through the second channel, and the guide plate is simple in structure and high in separation efficiency.

Description

Technical Field

[0001] This application relates to the field of cleaning equipment technology, and more specifically to a guide structure for a gas-liquid separation device and a surface cleaning device. Background Technology

[0002] In the field of cleaning equipment, the design of wastewater tanks is crucial. Their primary function is to collect and treat wastewater containing solid waste generated after cleaning operations. Wastewater tanks are mainly used in cleaning devices such as vacuum cleaners and floor scrubbers. Existing wastewater tanks not only need to collect wastewater and solid waste generated after cleaning operations, but also need to effectively achieve gas-liquid separation to ensure that gas can be discharged smoothly while liquid and solid waste are retained. Traditional wastewater tanks often employ simple structures and lack specialized gas-liquid separation designs, resulting in gas and liquid being discharged mixed and unable to be effectively separated. This not only reduces the working efficiency of cleaning equipment but may also lead to poor gas discharge, increasing energy consumption. Furthermore, it can easily cause increased internal pressure in the wastewater tank, resulting in wastewater leakage or overflow, causing inconvenience to users and additional maintenance work. To address the aforementioned issues, for example, utility model patent CN215820799U discloses a wastewater tank and cleaning equipment for cleaning devices, including a tank body, a receiving cavity, and a water pipe. The water pipe has a pipe body, an inlet, and an outlet. One side of the tank body has a through hole and a fastener, and the outlet passes through the through hole and communicates with the receiving cavity. The water pipe is detachably installed on the outer wall of the tank body. In this technical solution, the separation of dirty liquid and gas is achieved through the action of an air extraction mechanism and a guide plate. However, the cooperation structure of this air extraction mechanism and guide plate is relatively complex, and the separate air extraction mechanism consumes more energy, leading to increased costs and larger overall machine size. Furthermore, issues such as sealing also need to be considered, resulting in numerous problems in actual production applications. Summary of the Invention

[0003] The technical problem to be solved by this application is to provide a guiding structure and surface cleaning device for a gas-liquid separation device. The gas-liquid separation device has a guide plate between the inner wall of the housing and the outer wall of the filter chamber. The guide plate forms a second channel for fluid flow, and gas-liquid separation is achieved through the second channel. The guide plate has a simple structure and high separation efficiency.

[0004] This application provides a guiding structure for a gas-liquid separation device, including a housing. A filter chamber and a first channel are disposed within the housing. The first channel communicates with the filter chamber. A mixture enters the filter chamber through the first channel to separate solids from the fluid. A first outlet is provided on the filter chamber to discharge fluid from the filter chamber. A guide plate is disposed between the outer wall of the filter chamber and the inner wall of the housing. The outer wall of the filter chamber and the inner wall of the housing are joined by the guide plate to form a second channel for fluid flow. The second channel is used to transport fluid and perform gas-liquid separation.

[0005] In this technical solution, the gas-liquid separation device is mainly used in the sewage tank. The gas-liquid separation device is connected to the floor brush assembly of the cleaning device through a first channel. The floor brush assembly sucks sewage containing solids into the first channel. It should be noted that the mixture in this solution refers to a three-phase mixture of gas, liquid, and solids, i.e., sewage containing solids, and the fluid refers to the gas-liquid mixture. The tank has an internal filter chamber connected to the first channel. Sewage containing solids enters the filter through the first channel to achieve solid-liquid separation. The solids are retained in the filter chamber, while the fluid exits through the first outlet of the filter chamber and enters the tank, achieving effective separation of solids and fluids. This eliminates the need for manual solid-liquid separation when cleaning the tank, making operation easier and improving the user experience. A guide plate is installed between the outer wall of the filter chamber and the inner wall of the tank. The guide plate is connected to the outer wall of the filter chamber and the inner wall of the housing on both sides, respectively. The outer wall of the filter chamber and the inner wall of the housing form a second channel for fluid flow through the guide plate. After the fluid exits the filter chamber from the first outlet, it enters the second channel. The guide plate guides the fluid to flow inside the housing. The guide plate is located between the outer wall of the filter chamber and the inner wall of the housing. The fluid can be separated into gas and liquid under its own gravity when it enters the second channel. Because the gas is lighter, it flows along the guide plate to the exhaust port of the housing and is discharged, while the liquid naturally sinks to the bottom of the housing for storage due to gravity. Through the design of the filter chamber and the second channel, solids, liquids and gases can be effectively separated. The gas-liquid separation of the fluid by the guide plate does not require additional mechanical parts or energy consumption, which simplifies the separation process, makes it more energy-efficient during operation, and reduces maintenance costs and energy consumption.

[0006] As an improvement, the guide plate is disposed on the outer wall of the filter chamber and is joined to the inner wall of the housing, forming an integral structure. In this technical solution, placing the guide plate on the filter chamber and joining the outer wall of the filter chamber to the inner wall of the housing through the guide plate helps to form a continuous surface, reducing disturbances and eddies during the flow of the mixture, allowing the fluid to flow more efficiently in the second channel. On the other hand, the guide plate mainly guides the fluid discharged from the first outlet. Placing the guide plate on the outer wall of the filter chamber improves the sealing performance of the guide plate to the fluid, thereby improving the gas-liquid mixing efficiency.

[0007] As an improvement, the guide plate is provided with a bending structure, which extends the second channel and causes the fluid to change its flow direction. In this technical solution, the bending structure extends the second channel by changing the shape of the guide plate, thereby affecting the fluid flow path. By increasing the length of the second channel without increasing the size of the housing, the bending structure helps to increase the residence time of the fluid in the second channel, thus improving the gas-liquid separation efficiency.

[0008] As an improvement, the guide plate is provided with a main body extending along the width direction of the filter chamber. This main body is joined with a bending structure, and the main body of the guide plate is in a straight line shape. In this technical solution, the guide plate has a main body extending along the width direction of the filter chamber, and the main body is in a straight line shape. This allows the fluid to flow along a longer path in the width direction between the filter chamber and the housing, thereby increasing the residence time of the fluid in the second channel and improving the gas-liquid separation efficiency. The guide plate is composed of a main body and a bending structure, allowing the fluid to smoothly change its flow direction when passing through the guide plate, preventing fluid leakage, improving gas-liquid separation efficiency, and making the structural design simpler and more reliable.

[0009] As an improvement, the bending structure includes a first bending structure and a second bending structure, with the first bending structure located at one end of the main body and the second bending structure located at the other end of the main body. In this technical solution, by setting the first bending structure and the second bending structure, and with the first bending structure and the second bending structure located at opposite ends of the main body of the guide plate, the single second channel is divided into two independent flow paths. This allows the fluid discharged from the first outlet to flow in two directions, helping to reduce the load on the single channel, reducing the risk of blockage in the second channel, and improving the gas-liquid separation efficiency.

[0010] As an improvement, the first and second bending structures are symmetrically distributed along the width of the filter chamber. In this technical solution, the symmetrical distribution of the first and second bending structures facilitates the even distribution of fluid through the second channel in both directions, reducing excessive load in local areas and improving gas-liquid separation efficiency.

[0011] As an improvement, both the first and second bending structures are right-angle bending structures. In this technical solution, both the first and second bending structures adopt right-angle bends. This design provides a clear 90-degree turn in structure to change the flow direction of the fluid. The right-angle bend can extend the length of the second channel as much as possible, thereby extending the flow time of the fluid and improving the gas-liquid separation efficiency.

[0012] As an improvement, the first outlet is located on the side wall of the filter chamber, directly below the main body. In this technical solution, the second outlet is also located on the side wall of the filter chamber, allowing the fluid to discharge laterally. The laterally located first outlet can intercept solids, keeping them within the filter chamber and achieving effective solid separation. Furthermore, the solids deposited at the bottom of the filter chamber will not block the first outlet on the side wall, thus not affecting fluid discharge. This lateral discharge method is more conducive to gas-liquid separation. The first outlet's location directly below the main body allows the fluid to flow along the second channel after being discharged through the first outlet, further facilitating liquid separation to the bottom of the chamber under gravity and improving gas-liquid separation efficiency.

[0013] As an improvement, multiple first outlets are provided, arranged in a grid pattern. In this technical solution, providing multiple first outlets increases the number of fluid discharge channels, reduces the flow pressure of a single outlet, effectively avoids fluid congestion at the outlet, and improves discharge efficiency. The grid-shaped design of the first outlets, with the outlet area of ​​the filter chamber consisting of multiple parallel or intersecting strip-shaped through-holes, forms multiple evenly distributed small outlets, which helps improve fluid separation efficiency, especially the rapid discharge of gas, reducing the risk of blockage at a single outlet. Even if some outlets are blocked, other outlets can continue to operate. The grid-shaped design enhances the strength and durability of the structure while maintaining the outlet area. The strip structure of the grid can withstand certain pressure and impact. The mixture is discharged through multiple small outlets, reducing noise and vibration, especially at high speeds, reducing eddies and disturbances at the outlet, and helping to reduce surge phenomena.

[0014] This application also provides a surface cleaning device, including a guide structure for any of the aforementioned gas-liquid separation devices. In this technical solution, the cleaning device includes a floor brush assembly and a main unit. Both the floor brush assembly and the gas-liquid separation device are mounted on the main unit. The gas-liquid separation device is detachably mounted on the main unit via a housing, allowing the user to easily remove it from the cleaning device for cleaning. The floor brush assembly communicates with a first channel within the gas-liquid separation device. The floor brush assembly draws wastewater containing solids into the first channel, where it undergoes gas-liquid-solid three-phase separation via the gas-liquid separation device. A filter chamber is provided within the housing. The first channel connects the floor brush assembly and the filter chamber. Wastewater containing solids flows through the first channel into the filter chamber, where the filter chamber separates the solids from the fluid through a first outlet. A guide structure is provided between the outer wall of the filter chamber and the inner wall of the housing. The filter chamber's outer wall and the housing's inner wall are connected by a guide plate, forming a second channel for fluid flow. After exiting the filter chamber from the first outlet, the fluid enters the second channel. The guide plate guides the fluid's flow inside the housing. Under its own gravity, the fluid undergoes gas-liquid separation. Because the gas is lighter, it flows along the guide plate to the housing's exhaust port for discharge, while the liquid naturally sinks to the bottom of the housing for storage due to gravity. Through the design of the filter chamber and the second channel, solids, liquids, and gases can be effectively separated. Gas-liquid separation of the fluid via the guide plate requires no additional mechanical parts or energy consumption, simplifying the separation process, resulting in greater energy savings during operation, and reducing maintenance costs and energy consumption. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the guiding structure of a gas-liquid separation device according to this application.

[0016] Figure 2 This is an exploded structural diagram of the guide structure of a gas-liquid separation device according to this application.

[0017] Figure 3 This is a partial structural schematic diagram of the guide structure of a gas-liquid separation device according to this application.

[0018] Figure 4 This is a cross-sectional schematic diagram of the guide structure of a gas-liquid separation device according to this application.

[0019] Figure 5 This is a schematic diagram of the fluid flow path in this application.

[0020] Figure 6 This is a three-dimensional structural diagram of a surface cleaning device according to this application.

[0021] The figure shows: 1. Housing; 2. Filter chamber; 21. First outlet; 3. First channel; 4. Guide plate; 41. Main body; 42. First bending structure; 43. Second bending structure; 5. Second channel; 6. Floor brush assembly; 7. Main unit. Detailed Implementation

[0022] To better understand this application, various aspects of this application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of this application and are not intended to limit the scope of this application in any way. Throughout the specification, the same reference numerals refer to the same elements.

[0023] In the accompanying drawings, the thickness, size, and shape of the objects have been slightly exaggerated for illustrative purposes. The drawings are for illustrative purposes only and are not drawn to scale.

[0024] It should also be understood that the terms "comprising," "including," "having," "containing," and "including," when used in this specification, indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof. The terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (the specific types and constructions may be the same or different), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0025] Furthermore, it should be noted that the terms "installation," "setting," "equipped with," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, elements, or components; they can refer to a direct installation on another component or the possible presence of another intermediate component. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] like Figures 1 to 5As shown, this application discloses a guiding structure for a gas-liquid separation device, including a housing 1. The housing 1 is provided with a filter chamber 2 and a first channel 3. The first channel 3 is connected to the filter chamber 2. The mixture enters the filter chamber 2 through the first channel 3 to separate the solids from the fluid. The filter chamber 2 is provided with a first outlet 21 for discharging the fluid out of the filter chamber 2. The housing 1 is connected to the filter chamber 2, and the wastewater containing solids enters the filter through the first channel 3 to achieve solid-liquid separation. The solids are retained in the filter chamber 2, while the fluid is discharged from the filter chamber 2 through the first outlet 21 and enters the housing 1, thus achieving effective separation of solids and fluids. This eliminates the need for manual solid-liquid separation when cleaning the housing 1, making the operation easier and providing a better user experience.

[0027] like Figures 2 to 4 As shown, a guide plate 4 is provided between the outer wall of the filter chamber 2 and the inner wall of the housing 1. The outer wall of the filter chamber 2 and the inner wall of the housing 1 are joined by the guide plate 4 to form a second channel 5 for fluid flow. The second channel 5 is used to transport fluid and perform gas-liquid separation. By providing a guide plate 4 between the outer wall of the filter chamber 2 and the inner wall of the housing 1, with both sides of the guide plate 4 joined to the outer wall of the filter chamber 2 and the inner wall of the housing 1 respectively, a second channel 5 for fluid flow is formed between the outer wall of the filter chamber 2 and the inner wall of the housing 1 through the guide plate 4. After the fluid exits the filter chamber 2 from the first outlet 21, it enters the second channel 5. The guide plate 4 can... The guide plate 4 is located between the outer wall of the filter chamber 2 and the inner wall of the chamber 1. The fluid enters the second channel 5 and can be separated into gas and liquid under its own gravity. Because the gas is lighter, it flows along the guide plate 4 to the exhaust port of the chamber 1 and is discharged. The liquid sinks naturally to the bottom of the chamber 1 for storage due to gravity. Through the design of the filter chamber 2 and the second channel 5, solids, liquids and gases can be effectively separated. The guide plate 4 separates the fluid into gas and liquid without the need for additional mechanical parts or energy consumption, which simplifies the separation process, makes it more energy-efficient during operation, and reduces maintenance costs and energy consumption.

[0028] More specifically, such as Figures 2 to 4 As shown, the guide plate 4 is disposed on the outer wall of the filter chamber 2. The guide plate 4 is joined to the inner wall of the housing 1. The guide plate 4 and the outer wall of the filter chamber 2 are an integral structure. By placing the guide plate 4 on the filter chamber 2, the outer wall of the filter chamber 2 is joined to the inner wall of the housing 1 through the guide plate 4, which helps to form a continuous surface, reduce disturbances and eddies in the flow of the mixture, and enable the fluid to flow more efficiently in the second channel 5. On the other hand, the guide plate 4 mainly guides the fluid discharged from the first outlet 21. By placing the guide plate 4 on the outer wall of the filter chamber 2, the sealing performance of the guide plate 4 to the fluid can be improved, thereby improving the gas-liquid mixing efficiency.

[0029] More specifically, such as Figure 3 As shown, the guide plate 4 is provided with a bending structure. The guide plate 4 extends the second channel 5 through the bending structure. The second channel 5 changes the flow direction of the fluid through the bending structure. The bending structure extends the second channel 5 by changing the shape of the guide plate 4, thereby affecting the flow path of the fluid. By bending the structure, the length of the second channel 5 is increased without increasing the size of the box 1, which helps to increase the residence time of the fluid in the second channel 5, thereby improving the gas-liquid separation efficiency.

[0030] More specifically, such as Figure 3 As shown, the guide plate 4 is provided with a main body portion 41 extending along the width direction of the filter chamber 2. The main body portion 41 is joined with a bending structure. The main body portion 41 of the guide plate 4 is in the shape of a straight line. The guide plate 4 is provided with a main body portion 41 extending along the width direction of the filter chamber 2. The main body portion 41 is in the shape of a straight line, so that the fluid can flow along the width direction for as long as possible between the filter chamber 2 and the housing 1, thereby increasing the residence time of the fluid in the second channel 5 and improving the gas-liquid separation efficiency. The guide plate 4 is composed of a main body portion 41 and a bending structure. When the fluid passes through the guide plate 4, it can smoothly change the flow direction, which can avoid fluid leakage, improve the gas-liquid separation efficiency, and make the structural design simpler and more reliable.

[0031] More specifically, such as Figure 3 and Figure 5 As shown, the bending structure includes a first bending structure 42 and a second bending structure 43. The first bending structure 42 is located at one end of the main body 41, and the second bending structure 43 is located at the other end of the main body 41. By setting the first bending structure 42 and the second bending structure 43, and with the first bending structure 42 and the second bending structure 43 located at both ends of the main body 41 of the guide plate 4, the single second channel 5 is divided into two independent flow paths. This allows the fluid to be divided into two flow directions after being discharged from the first outlet 21, which helps to reduce the load on the single channel, reduces the risk of blockage in the second channel 5, and improves the gas-liquid separation efficiency.

[0032] More specifically, such as Figure 3 As shown, the first bending structure 42 and the second bending structure 43 are symmetrically distributed along the width direction of the filter chamber 2. The symmetrical distribution of the first bending structure 42 and the second bending structure 43 is beneficial for the fluid to pass through the first bending structure 42 and the second bending structure 43 in two directions in the second channel 5. This facilitates the uniform distribution of fluid in the second channel, reduces excessive load in local areas, and improves the gas-liquid separation efficiency.

[0033] More specifically, such as Figure 3 and Figure 5As shown, both the first bending structure 42 and the second bending structure 43 are right-angle bending structures. The design provides a clear 90-degree turn in the structure to change the flow direction of the fluid. The right-angle bend can extend the length of the second channel 5 as much as possible, thereby extending the flow time of the fluid and improving the gas-liquid separation efficiency.

[0034] More specifically, such as Figures 2 to 5 As shown, the first outlet 21 is located on the side wall of the filter chamber 2, directly below the main body 41. The second outlet is also located on the side wall of the filter chamber 2. The fluid is discharged laterally. The laterally located first outlet 21 can intercept solids, keeping them inside the filter chamber 2 and achieving effective separation of solids. Furthermore, the solids deposited at the bottom of the filter chamber 2 will not block the first outlet 21 on the side wall and will not affect the discharge of the fluid. This lateral discharge method is more conducive to gas-liquid separation. The first outlet 21 is located directly below the main body 41, so that after the fluid is discharged through the first outlet 21, it flows along the second channel 5 under the obstruction of the main body 41, which is more conducive to the separation of the liquid to the bottom of the box 1 under the action of gravity, thus improving the gas-liquid separation efficiency.

[0035] More specifically, such as Figure 3 As shown, multiple first outlets 21 are provided, arranged in a grid pattern. Multiple first outlets 21 increase the number of fluid discharge channels, reduce the flow pressure of a single outlet, effectively avoid fluid blockage at the outlet, and improve discharge efficiency. The grid-shaped design of the first outlets 21, with the outlet area of ​​the filter chamber 2 consisting of multiple parallel or intersecting strip-shaped through-holes, forms multiple evenly distributed small outlets, which helps improve fluid separation efficiency, especially the rapid discharge of gas, reducing the risk of blockage at a single outlet. Even if some outlets are blocked, other outlets can continue to operate. The grid-shaped design enhances the strength and durability of the structure while maintaining the outlet area. The strip structure of the grid can withstand certain pressure and impact. The mixture is discharged through multiple small outlets, reducing noise and vibration, especially at high speeds, reducing eddies and disturbances at the outlet, and helping to reduce surge phenomena.

[0036] like Figures 1 to 6As shown, this embodiment can also disclose a surface cleaning device, including the guide structure of any of the aforementioned gas-liquid separation devices. The cleaning device includes a floor brush assembly 6 and a main unit 7. Both the floor brush assembly 6 and the gas-liquid separation device are mounted on the main unit 7. The housing 1 of the gas-liquid separation device is detachably mounted on the main unit 7 so that the user can remove the gas-liquid separation device from the cleaning device for cleaning. The floor brush assembly 6 is connected to the first channel 3 inside the housing 1. The floor brush assembly 6 draws wastewater containing solids into the first channel 3, where it undergoes gas-liquid-solid three-phase separation via the gas-liquid separation device. A filter chamber 2 is provided inside the housing 1. The first channel 3 connects the floor brush assembly 6 and the filter chamber 2. Wastewater containing solids flows through the first channel 3 into the filter chamber 2. The filter chamber 2 separates the solids from the fluid through the first outlet 21. A guide plate 4 is provided between the outer wall of the filter chamber 2 and the inner wall of the housing 1. The guide plate 4 forms a second channel 5 for fluid flow between the outer wall of the filter chamber 2 and the inner wall of the housing 1. After the fluid exits the filter chamber 2 from the first outlet 21, it enters the second channel 5. The guide plate 4 can guide the fluid to flow inside the housing 1. The fluid can be separated into gas and liquid under its own gravity. Because the gas is lighter, it flows along the guide plate 4 to the exhaust port of the housing 1 and is discharged. The liquid naturally sinks to the bottom of the housing 1 for storage due to gravity. Through the design of the filter chamber 2 and the second channel 5, solids, liquids and gases can be effectively separated. The gas-liquid separation of the fluid is carried out by the guide plate 4 without additional mechanical parts or energy consumption, which simplifies the separation process, makes it more energy-efficient during operation, and reduces maintenance costs and energy consumption.

[0037] This application is not limited to the above-described preferred embodiments. Anyone can derive other products in various forms under the guidance of this application. However, regardless of any changes made to their shape or structure, any technical solution that is the same as or similar to that of this application falls within the protection scope of this application.

Claims

1. A guiding structure for a gas-liquid separation device, comprising a housing (1), wherein a filter chamber (2) and a first channel (3) are provided inside the housing (1), the first channel (3) communicating with the filter chamber (2), and a mixture enters the filter chamber (2) through the first channel (3) to separate the solid from the fluid, characterized in that, The filter chamber (2) is provided with a first outlet (21), which is used to discharge fluid from the filter chamber (2). A guide plate (4) is provided between the outer wall of the filter chamber (2) and the inner wall of the box (1). The outer wall of the filter chamber (2) and the inner wall of the box (1) are joined by the guide plate (4) to form a second channel (5) for fluid flow. The second channel (5) is used to transport fluid and perform gas-liquid separation.

2. The guiding structure of the gas-liquid separation device according to claim 1, characterized in that, The guide plate (4) is disposed on the outer wall of the filter chamber (2), and the guide plate (4) is joined to the inner wall of the box (1). The guide plate (4) and the outer wall of the filter chamber (2) are an integral structure.

3. The guiding structure of a gas-liquid separation device according to claim 1 or 2, characterized in that, The guide plate (4) is provided with a bending structure, and the guide plate (4) extends the second channel (5) through the bending structure, and the second channel (5) changes the flow direction of the fluid through the bending structure.

4. The guiding structure of the gas-liquid separation device according to claim 3, characterized in that, The guide plate (4) is provided with a main body (41) extending along the width direction of the filter cavity (2), the main body (41) is joined with a bending structure, and the main body (41) of the guide plate (4) is in the shape of a straight line.

5. The guiding structure of the gas-liquid separation device according to claim 4, characterized in that, The bending structure includes a first bending structure (42) and a second bending structure (43), wherein the first bending structure (42) is located at one end of the main body (41) and the second bending structure (43) is located at the other end of the main body (41).

6. The guiding structure of the gas-liquid separation device according to claim 5, characterized in that, The first bending structure (42) and the second bending structure (43) are symmetrically distributed along the width direction of the filter cavity (2).

7. The guiding structure of the gas-liquid separation device according to claim 5, characterized in that, Both the first bending structure (42) and the second bending structure (43) are right-angle bending structures.

8. The guiding structure of the gas-liquid separation device according to claim 3, characterized in that, The first outlet (21) is disposed on the side wall of the filter chamber (2), and the first outlet (21) is located directly below the main body (41).

9. The guiding structure of the gas-liquid separation device according to claim 8, characterized in that, The first outlet (21) is provided in multiple ways, and the first outlet (21) is arranged in a grid pattern.

10. A surface cleaning device, characterized in that, The guide structure of the gas-liquid separation device according to any one of claims 1-9.

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