A check valve, a washing system and a vehicle

Abstract

The embodiment of the application provides a one-way valve, a washing system and a vehicle, the one-way valve comprises a shell, a flow channel is formed in the shell, the flow channel comprises a main flow channel and a plurality of branch flow channels, the plurality of branch flow channels are arranged in sequence along the first direction, the branch flow channel is a curved flow channel, one end of the branch flow channel close to the first end face is provided with a first communication port communicated with the main flow channel, one end of the branch flow channel close to the second end face is provided with a second communication port communicated with the main flow channel, and the part of the main flow channel between the first communication port and the second communication port of each branch flow channel is an intermediate sub-flow channel; the angle between each intermediate sub-flow channel and the tangent direction of the first communication port on one side of the intermediate sub-flow channel is greater than 90 degrees, and the angle between the intermediate sub-flow channel and the tangent direction of the second communication port on the other side of the intermediate sub-flow channel is less than 90 degrees. The one-way valve of the application can solve the problem of one-way valve failure caused by the long-term immersion of the spring in the washing liquid in the existing one-way valve of the vehicle washing system.

Description

Technical Field

[0001] This application relates to the field of valve technology, and more particularly to a one-way valve, a washing system, and a vehicle. Background Technology

[0002] The existing one-way valve of the car wash system includes a valve body, a spring and a steel ball. When the washing motor is working, it generates water pressure, which pushes the steel ball to compress the spring and open the internal channel of the valve body, thereby achieving the one-way water flow function. When the water flow is reversed, the steel ball blocks the internal channel of the valve body, and the one-way valve does not flow water.

[0003] However, the one-way valves in existing car wash systems are prone to corrosion and breakage due to the springs being immersed in the wash liquid for extended periods, leading to valve failure. Utility Model Content

[0004] This application provides a one-way valve, a washing system, and a vehicle, aiming to solve the problem of one-way valve failure in existing vehicle washing systems caused by the spring being immersed in the washing liquid for a long time.

[0005] To address the aforementioned issues, one embodiment of this application provides a one-way valve, including a housing having a first end face and a second end face opposite to each other along a first direction. A flow channel is formed within the housing, including a main flow channel and multiple branch flow channels. The main flow channel extends along the first direction, with one end of the main flow channel penetrating the first end face to form a first opening, and the other end of the main flow channel penetrating the second end face to form a second opening. Multiple branch channels are arranged sequentially along the first direction. Each branch channel is a curved channel. Each branch channel has a first connection port that communicates with the main channel at one end near the first end face and a second connection port that communicates with the main channel at one end near the second end face. The portion of the main channel located between the first and second connection ports of each branch channel is an intermediate sub-channel. Two adjacent branch channels are located on opposite sides of the main channel along the second direction. Each intermediate sub-channel has an angle greater than 90 degrees with the tangent direction of the first connecting port on one side and an angle less than 90 degrees with the tangent direction of the second connecting port on the other side; wherein the first direction is perpendicular to the second direction.

[0006] In this embodiment of the one-way valve, when fluid enters the flow channel through the first opening, the fluid splits into two, entering a branch flow channel and an intermediate sub-flow channel respectively. Since the angle between the intermediate sub-flow channel and the tangent direction of the first connecting port on one side is greater than 90 degrees, the flow rate of fluid flowing into the intermediate sub-flow channel is greater than the flow rate flowing into the branch flow channel through the first connecting port. Furthermore, since the angle between the intermediate sub-flow channel and the tangent direction of the second connecting port on the other side is less than 90 degrees, the fluid can smoothly flow back to the main flow channel from the branch flow channel through the second connecting port. Thus, the fluid flowing back to the main flow channel from the branch flow channel merges with the fluid flowing through the main flow channel, resulting in minimal fluid kinetic energy loss. The fluid can smoothly flow in through the first opening and out through the second opening. When fluid enters the flow channel through the second opening, the fluid splits into two, entering a branch flow channel and an intermediate sub-flow channel respectively. Since the angle between the intermediate sub-flow channel and the tangent direction of the second connecting port on the other side is less than 90 degrees, the fluid can smoothly flow into the branch flow channel through the second connecting port. Furthermore, since the angle between the tangent of the intermediate sub-channel and the first connecting port on one side is greater than 90 degrees, when the fluid in the branch channel flows back to the main channel through the first connecting port, it merges with the fluid flowing through the main channel, resulting in a significant decrease in fluid kinetic energy. Because there are multiple branch channels, the fluid kinetic energy decreases multiple times until the fluid stops flowing, and the fluid cannot flow out through the first opening. Therefore, the one-way flow function of the check valve can be realized.

[0007] The one-way valve in this embodiment achieves unidirectional fluid flow through a flow channel design, eliminating the need for components such as springs and steel balls, resulting in a simpler structure. Furthermore, it solves the problem of one-way valve failure in existing car wash systems caused by the spring being constantly immersed in the wash liquid.

[0008] The fluid is, for example, a liquid or a gas.

[0009] Optionally, the inner wall surface of the branch channel is a smooth surface.

[0010] The inner wall of the branch flow channel is a smooth surface to avoid abrupt changes such as right angles and acute angles, preventing the fluid from forming eddies or stagnant flow when entering the branch flow channel, and ensuring that the fluid can be evenly and smoothly distributed to each branch flow channel.

[0011] Optionally, the curvature of the branch channel changes continuously along its extension direction.

[0012] In this way, the branch flow channel is a curved flow channel with continuously changing curvature, avoiding abrupt changes in structure such as right angles and acute angles, preventing the formation of vortices or stagnant flow when the fluid enters the branch flow channel, and ensuring that the fluid can be evenly and smoothly distributed to each branch flow channel.

[0013] Optionally, the branch channel is an arch shape that protrudes away from the main channel.

[0014] This ensures that the inner wall of the branch flow channel is smooth while preventing the branch flow channel from being too long and affecting the flow of fluid.

[0015] Optionally, the cross-sectional shape of the main channel is elliptical or circular; and / or, The cross-sectional shape of the branch channel is elliptical or circular.

[0016] The cross-sectional shape of the main channel is elliptical or circular to avoid abrupt changes such as right angles and acute angles, thereby reducing the fluid flow resistance of the main channel and making the fluid flow in the main channel smoother.

[0017] The cross-sectional shape of the branch flow channel is elliptical or circular, avoiding abrupt changes such as right angles and acute angles, to prevent the fluid from forming vortices or stagnant flow when entering the branch flow channel, and to ensure that the fluid can be evenly and smoothly distributed to each branch flow channel.

[0018] Optionally, the plurality of said branch channels are arranged at equal intervals along the first direction; and / or, The multiple branch channels have the same shape and size.

[0019] Multiple branch channels are arranged at equal intervals along the first direction. The shape and size of the multiple branch channels are consistent, which ensures that when the fluid is diverted from the main channel to the branch channels, the pressure and flow rate at the inlet (first connection port) of each branch channel are uniform and consistent, avoiding the situation where the flow rate of some branch channels is too large or too small, thereby achieving efficient forward flow (flow from the first opening to the second opening); and, when the fluid enters in the opposite direction (entering from the second opening), the centrifugal force generated by each branch channel can more effectively cancel each other at the confluence.

[0020] Optionally, the number of branch channels is 6-12.

[0021] The number of branch channels needs to be considered in conjunction with the flow requirements of the washing system and the space constraints of the channels. If there are too few branch channels, it will be difficult to fully divert the fluid during forward flow, resulting in excessively high flow velocities in each branch channel. This not only increases fluid resistance but may also induce turbulence, reducing forward flow efficiency. Simultaneously, during the backflow prevention process (when fluid enters in the opposite direction), the limited number of branch channels cannot generate sufficient reverse fluid resistance, weakening the backflow prevention effect. Conversely, if there are too many channels, on the one hand, it will occupy too much internal space in the check valve, making the check valve structure overly complex, increasing manufacturing difficulty and cost; on the other hand, too many branch channels will cause excessive liquid diversion, resulting in insufficient fluid kinetic energy in each branch channel, which also affects forward flow and backflow prevention functions. Based on the flow parameters of common automotive washing systems, and through fluid dynamics simulation and actual testing, a branch channel count of 6-12 is more suitable, which can meet flow requirements while maintaining efficient forward flow and reliable backflow prevention performance.

[0022] Optionally, each of the intermediate sub-channels forms an angle of 30-60 degrees with the tangential direction of the second connecting port on its other side.

[0023] Each intermediate sub-channel forms a tangential angle of 30-60 degrees with the second connecting port on its other side. When the fluid flows in the forward direction, this allows the fluid in the branch channel to flow back to the main channel more smoothly. When the fluid flows in the reverse direction, this angle design makes it easier to create a diversion effect in the branch channel and a resistance effect to the reverse flow, thus enhancing the backflow prevention effect.

[0024] Optionally, the diameter of the first opening is smaller than the diameter of the second opening.

[0025] The diameter of the first opening is smaller than that of the second opening, which increases the resistance when the fluid flows in reverse.

[0026] Optionally, the main flow channel includes a first flow channel and a second flow channel, wherein the first flow channel is connected between the first opening and the branch flow channel adjacent to the first opening, and the second flow channel is connected between the second opening and the branch flow channel adjacent to the second opening; The diameter of the first flow channel remains consistent along its extension direction; Along the direction from the second opening to the first opening, the diameter of the second flow channel gradually decreases.

[0027] Along the direction from the second opening to the first opening, the diameter of the second flow channel gradually decreases, and the second flow channel is funnel-shaped, which further increases the resistance when the fluid flows in reverse.

[0028] Optionally, the housing includes a first housing and a second housing. The first housing is provided with a first flow channel groove, and the second housing is provided with a second flow channel groove. The first housing and the second housing are joined together so that the first flow channel groove and the second flow channel groove are combined to form the flow channel.

[0029] The shell is formed by joining the first shell and the second shell, making it easier to manufacture and shape.

[0030] On the other hand, embodiments of this application provide a washing system including the one-way valve of the above embodiments.

[0031] The washing system of this application embodiment has all the advantages of the one-way valve or washing system of the above embodiments.

[0032] The washer system can be a windshield washer system, which typically includes a reservoir, a washer pump, a delivery line, and nozzles. The reservoir, located in the engine compartment, stores washer fluid. The washer pump is usually a DC micro-pump, installed at the bottom or side of the reservoir and connected to the washer fluid via a suction tube. The main components of the washer pump are a motor and an impeller. When the motor is powered on, it drives the impeller to rotate, generating negative pressure to draw in the washer fluid, which is then forced into the delivery line by pressure. The delivery line connects the washer pump to the nozzles, responsible for delivering the washer fluid. The nozzles are installed on the front edge of the hood (corresponding to the front windshield) or the trunk lid (corresponding to the rear windshield). The nozzles spray high-pressure washer fluid at a specific angle to ensure even coverage of the glass surface. A one-way valve is installed on the delivery line to prevent washer fluid backflow.

[0033] A washing system can also be a headlight washing system. A headlight washing system typically includes a reservoir, a washing pump, a delivery line, and nozzles. The reservoir, located in the engine compartment, stores the washer fluid. The washing pump is usually a DC micro-pump, installed at the bottom or side of the reservoir, and connected to the washer fluid in the tank via a suction tube. The main components of the washing pump are a motor and an impeller. When the motor is powered on, it drives the impeller to rotate, generating negative pressure to draw in the washer fluid, which is then forced into the delivery line. The delivery line connects the washing pump to the nozzles, responsible for delivering the washer fluid. The nozzles are installed below the headlights, and their function is to spray the high-pressure washer fluid at a specific angle, ensuring even coverage of the headlight surface. A one-way valve is installed on the delivery line to prevent backflow of the washer fluid.

[0034] In another aspect, embodiments of this application provide a vehicle including the one-way valve of the above embodiments or the washing system of the above embodiments.

[0035] The vehicle of this application embodiment has all the advantages of the one-way valve of the above embodiments. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of a one-way valve provided in an embodiment of the present invention when fluid flows in in the forward direction; Figure 2 This is a schematic diagram of a one-way valve provided in an embodiment of the present invention when fluid flows in the reverse direction.

[0037] The reference numerals in the accompanying drawings are as follows: 1. Shell; 11. First end face; 12. Second end face; 13. First opening; 14. Second opening; 2. Flow channel; 21. Main flow channel; 211. Intermediate sub-flow channel; 212. First flow channel; 213. Second flow channel; 22. Branch flow channel; 221. First connecting port; 222. Second connecting port. Detailed Implementation

[0038] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0039] The first direction in this article is Figure 1 The X direction in the middle, the second direction is Figure 1 in the Y direction.

[0040] See Figure 1 and Figure 2 This utility model provides a one-way valve, including a housing 1. The housing 1 has a first end face 11 and a second end face 12 opposite to each other along a first direction. A flow channel 2 is formed inside the housing 1. The flow channel 2 includes a main flow channel 21 and a plurality of branch flow channels 22. The main flow channel 21 extends along the first direction. One end of the main flow channel 21 penetrates the first end face 11 to form a first opening 13, and the other end of the main flow channel 21 penetrates the second end face 12 to form a second opening 14. The plurality of branch flow channels 22 are arranged sequentially along the first direction. The branch flow channels 22 are curved flow channels. The end of the branch flow channel 22 near the first end face 11 is provided with a first connecting port 221 communicating with the main flow channel 21. The end of the branch flow channel 22 near the second end face 12 is provided with a second connecting port 222 communicating with the main flow channel 21. The part of the main flow channel 21 located between the first connecting port 221 and the second connecting port 222 of each branch flow channel 22 is an intermediate sub-flow channel 211.

[0041] Two adjacent branch channels 22 are located on opposite sides of the main channel 21 along the second direction. Each intermediate sub-channel 22 has an angle α greater than 90 degrees with the tangent direction of its first connecting port 221 on one side and an angle b less than 90 degrees with the tangent direction of its second connecting port 222 on the other side. The first direction is perpendicular to the second direction.

[0042] See Figure 1 The angle α between the intermediate sub-channel 22 and the tangent direction of the first connecting port 221 on one side represents the extension direction of the intermediate sub-channel 22. Figure 1 The direction of extension of the dashed line L1) and the tangent direction of the inner wall of the first connecting port 221 on one side ( Figure 1 The angle between the extension direction of the dashed line L2 and the tangent direction of the intermediate sub-channel 22 and the second connecting port 222 on the other side represents the extension direction of the intermediate sub-channel 22. Figure 1 The direction of extension of the dashed line L1) and the tangent direction of the inner wall of the second connecting port 222 on the other side ( Figure 1 The angle between the direction of extension of the dashed line L3 and the direction of extension. See angles a and b. Figure 1 As shown.

[0043] In this embodiment of the one-way valve, when fluid enters the flow channel 2 through the first opening 13, the fluid can be split into two, entering the branch flow channel 22 and the intermediate sub-flow channel 211 respectively. Since the angle α between the intermediate sub-flow channel 211 and the tangent direction of the first connecting port 221 on one side is greater than 90 degrees, the flow rate of fluid flowing into the intermediate sub-flow channel 211 is greater than the flow rate of fluid flowing into the branch flow channel 22 through the first connecting port 221. Furthermore, since the angle b between the tangent direction of the intermediate sub-flow channel 211 and the second connecting port 222 on the other side is less than 90 degrees, the fluid can smoothly flow back to the main flow channel 21 from the branch flow channel 22 through the second connecting port 222. In this way, the fluid flowing back to the main flow channel 21 from the branch flow channel 22 merges with the fluid flowing through the main flow channel 21 in the same direction, resulting in less fluid kinetic energy attenuation. The fluid can smoothly flow in through the first opening 13 and out through the second opening 14. When fluid enters the flow channel through the second opening 14, it flows backward into the one-way valve, splitting into two branches: the branch flow channel 22 and the intermediate sub-flow channel 211. Since the angle b between the tangent of the intermediate sub-flow channel 211 and the second connecting port 222 on its other side is less than 90 degrees, the fluid can smoothly flow into the branch flow channel 22 through the second connecting port 222. Furthermore, since the angle α between the tangent of the intermediate sub-flow channel 211 and the first connecting port 221 on its side is greater than 90 degrees, when the fluid in the branch flow channel 22 flows back to the main flow channel 21 through the first connecting port 221, it merges with the fluid flowing through the main flow channel 21. The fluid kinetic energy is significantly reduced. Because there are multiple branch flow channels 22, the fluid kinetic energy is reduced multiple times until the fluid stops flowing, preventing it from flowing out through the first opening 13. Therefore, the one-way flow function of the one-way valve is achieved.

[0044] The one-way valve in this embodiment achieves unidirectional fluid flow through the structural design of the flow channel 2, eliminating the need for components such as springs and steel balls, resulting in a simpler structure. Furthermore, it solves the problem of one-way valve failure in existing vehicle washing systems caused by the spring being constantly immersed in the washing liquid.

[0045] When fluid flows forward into the check valve, the direction of fluid flow within the check valve is shown in the diagram. Figure 1 As shown by the black arrow in the image.

[0046] When fluid flows into the check valve in the reverse direction, the direction of fluid flow in the check valve is shown in the diagram. Figure 2 As shown by the black arrow in the image.

[0047] Fluids can be liquids or gases. For example, a liquid such as a detergent.

[0048] In one embodiment, the inner wall surface of the branch channel 22 is a smooth surface.

[0049] The inner wall of the branch channel 22 is a smooth surface to avoid abrupt changes such as right angles and acute angles, so as to prevent the fluid from forming eddies or stagnant flow when entering the branch channel 22, and to ensure that the fluid can be evenly and smoothly distributed to each branch channel 22.

[0050] In one embodiment, the curvature of the branch channel 22 changes continuously along the extension direction of the branch channel 22.

[0051] In this way, the branch channel 22 is a curved channel with continuously changing curvature, avoiding abrupt changes such as right angles and acute angles, preventing the fluid from forming vortices or stagnant flow when entering the branch channel 22, and ensuring that the fluid can be evenly and smoothly distributed to each branch channel 22.

[0052] In one embodiment, see Figure 1 The branch channel 22 is an arch shape that protrudes away from the main channel 21.

[0053] This ensures that the inner wall of the branch channel 22 is smooth while preventing the branch channel 22 from being too long and affecting the flow of fluid.

[0054] In one embodiment, the cross-sectional shape of the main channel 21 is elliptical or circular.

[0055] The cross-sectional shape of the main channel 21 is elliptical or circular to avoid abrupt changes such as right angles and acute angles, thereby reducing the fluid flow resistance of the main channel 21 and making the fluid flow in the main channel 21 smoother.

[0056] In one embodiment, the cross-sectional shape of the branch channel 22 is elliptical or circular.

[0057] The cross-sectional shape of the branch channel 22 is elliptical or circular to avoid abrupt changes such as right angles and acute angles, so as to prevent the fluid from forming vortices or stagnant flow when entering the branch channel 22, and to ensure that the fluid can be evenly and smoothly distributed to each branch channel 22.

[0058] In one embodiment, see Figure 1 Multiple branch channels 22 are arranged at equal intervals along the first direction.

[0059] In one embodiment, preferably, the multiple branch channels 22 have the same shape and size.

[0060] Multiple branch channels 22 are arranged at equal intervals along the first direction. The shape and size of the multiple branch channels 22 are consistent, which ensures that when the fluid is diverted from the main channel 21 to the branch channels 22, the pressure and flow rate at the inlet of each branch channel 22 are uniform and consistent, avoiding the situation that the flow rate of some branch channels 22 is too large or too small, thereby achieving efficient forward flow (flow from the first opening 13 to the second opening 14); and, when the fluid enters in the opposite direction (entering through the second opening 14), the centrifugal force generated by each branch channel 22 can more effectively cancel each other at the confluence.

[0061] In one embodiment, the number of branch channels 22 is 6-12.

[0062] The number of branch channels 22 needs to be considered in conjunction with the flow requirements of the washing system and the space constraints of the channels. If there are too few branch channels 22, it will be difficult to fully divert the fluid during forward flow, resulting in excessively high flow velocities within each branch channel 22. This not only increases fluid resistance but may also induce turbulence, reducing forward flow efficiency. Simultaneously, during the backflow prevention process (when fluid enters in the opposite direction), the limited number of branch channels 22 cannot generate sufficient reverse fluid resistance, weakening the backflow prevention effect. Conversely, if there are too many channels, on the one hand, it will occupy too much internal space of the check valve, making the check valve structure overly complex, increasing manufacturing difficulty and cost; on the other hand, too many branch channels 22 will cause excessive liquid diversion, resulting in insufficient fluid kinetic energy within each branch channel 22, which also affects forward flow and backflow prevention functions. Based on the flow parameters of common automotive washing systems, and through fluid dynamics simulation and actual testing, a number of branch channels 22 of 6-12 is more suitable, which can meet the flow requirements while maintaining efficient forward flow and reliable backflow prevention performance.

[0063] In one embodiment, the angle b between the tangential direction of each intermediate sub-channel 211 and the second connecting port 222 on the other side is 30-60 degrees.

[0064] Each intermediate sub-channel 22 has an angle b of 30-60 degrees with the tangent direction of its second connecting port 222 on the other side. When the fluid flows in the forward direction, this allows the fluid in the branch channel 22 to flow back to the main channel 21 more smoothly. When the fluid stops flowing in the reverse direction, this angle design of the angle b makes it easier to form the diversion and reverse flow resistance of the branch channel 22, thus enhancing the flow stop effect.

[0065] In one embodiment, the diameter of the first opening 13 is smaller than the diameter of the second opening 14.

[0066] The diameter of the first opening 13 is smaller than that of the second opening 14, which can increase the resistance when the fluid flows in reverse.

[0067] In one embodiment, see Figure 1The main channel 21 includes a first channel 212 and a second channel 213. The first channel 212 is connected between the first opening 13 and the branch channel 22 adjacent to the first opening. The second channel 213 is connected between the second opening 14 and the branch channel 22 adjacent to the second opening 14. The diameter of the first channel 212 remains consistent along its extension direction. The diameter of the second channel 213 gradually decreases along the direction from the second opening 14 to the first opening 13.

[0068] Along the direction from the second opening 14 to the first opening 13, the diameter of the second flow channel 213 gradually decreases, and the second flow channel 213 is funnel-shaped, which further increases the resistance when the fluid flows in reverse.

[0069] In one embodiment, the housing 1 includes a first housing and a second housing. The first housing is provided with a first flow channel groove, and the second housing is provided with a second flow channel groove. The first housing and the second housing are joined together so that the first flow channel groove and the second flow channel groove are combined to form a flow channel 2.

[0070] The shell 1 is formed by joining the first shell and the second shell, making it easier to manufacture and shape.

[0071] However, in other embodiments, the one-way valve and its internal flow channel 2 can also be directly formed by a mold.

[0072] On the other hand, embodiments of this application provide a washing system including the one-way valve of the above embodiments.

[0073] The washing system of this application embodiment has all the advantages of the one-way valve or washing system of the above embodiments.

[0074] The washer system can be a windshield washer system, which typically includes a reservoir, a washer pump, a delivery line, and nozzles. The reservoir, located in the engine compartment, stores washer fluid. The washer pump is usually a DC micro-pump, installed at the bottom or side of the reservoir and connected to the washer fluid via a suction tube. The main components of the washer pump are a motor and an impeller. When the motor is powered on, it drives the impeller to rotate, generating negative pressure to draw in the washer fluid, which is then forced into the delivery line by pressure. The delivery line connects the washer pump to the nozzles, responsible for delivering the washer fluid. The nozzles are installed on the front edge of the hood (corresponding to the front windshield) or the trunk lid (corresponding to the rear windshield). The nozzles spray high-pressure washer fluid at a specific angle to ensure even coverage of the glass surface. A one-way valve is installed on the delivery line to prevent washer fluid backflow.

[0075] A washing system can also be a headlight washing system. A headlight washing system typically includes a reservoir, a washing pump, a delivery line, and nozzles. The reservoir, located in the engine compartment, stores the washer fluid. The washing pump is usually a DC micro-pump, installed at the bottom or side of the reservoir, and connected to the washer fluid in the tank via a suction tube. The main components of the washing pump are a motor and an impeller. When the motor is powered on, it drives the impeller to rotate, generating negative pressure to draw in the washer fluid, which is then forced into the delivery line. The delivery line connects the washing pump to the nozzles, responsible for delivering the washer fluid. The nozzles are installed below the headlights, and their function is to spray the high-pressure washer fluid at a specific angle, ensuring even coverage of the headlight surface. A one-way valve is installed on the delivery line to prevent backflow of the washer fluid.

[0076] In another aspect, embodiments of this application provide a vehicle including the one-way valve of the above embodiments or the washing system of the above embodiments.

[0077] The vehicle of this application embodiment has all the advantages of the one-way valve of the above embodiments.

[0078] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A one-way valve characterized by, Includes a housing (1), the housing (1) having a first end face (11) and a second end face (12) opposite to each other along a first direction, a flow channel (2) is formed inside the housing (1), the flow channel (2) includes a main flow channel (21) and a plurality of branch flow channels (22), the main flow channel (21) extends along the first direction, one end of the main flow channel (21) penetrates the first end face (11) to form a first opening (13), and the other end of the main flow channel (21) penetrates the second end face (12) to form a second opening (14). Multiple branch channels (22) are arranged sequentially along the first direction. Each branch channel (22) is a curved channel. Each branch channel (22) has a first connecting port (221) connected to the main channel (21) at one end near the first end face (11), and a second connecting port (222) connected to the main channel (21) at one end near the second end face (12). The portion of the main channel (21) between the first connecting port (221) and the second connecting port (222) of each branch channel (22) is an intermediate sub-channel (211). Two adjacent branch channels (22) are located on opposite sides of the main channel (21) along the second direction. Each intermediate sub-channel (211) has an angle greater than 90 degrees with the tangent direction of the first connecting port (221) on one side and an angle less than 90 degrees with the tangent direction of the second connecting port (222) on the other side; wherein the first direction is perpendicular to the second direction.

2. The one-way valve according to claim 1, characterized in that, The inner wall of the branch channel (22) is a smooth surface.

3. The check valve of claim 2, wherein, Along the extension direction of the branch channel (22), the curvature of the branch channel (22) changes continuously.

4. The check valve of claim 2, wherein The branch channel (22) is an arch shape that protrudes away from the main channel (21).

5. The check valve of claim 2 wherein, The cross-sectional shape of the main channel (21) is elliptical or circular; and / or, The cross-sectional shape of the branch channel (22) is elliptical or circular.

6. The check valve of claim 1, wherein The plurality of said branch channels (22) are arranged at equal intervals along the first direction; and / or, The multiple branch channels (22) have the same shape and size.

7. The check valve of claim 1, wherein The number of branch channels (22) is 6-12.

8. The one-way valve according to claim 1, characterized in that, Each of the intermediate sub-channels (211) forms an angle of 30-60 degrees with the tangential direction of the second connecting port (222) on its other side.

9. The one-way valve according to claim 1, characterized in that, The diameter of the first opening (13) is smaller than the diameter of the second opening (14).

10. The one-way valve according to claim 9, characterized in that, The main channel (21) includes a first channel (212) and a second channel (213). The first channel (212) is connected between the first opening (13) and the branch channel (22) adjacent to the first opening (13). The second channel (213) is connected between the second opening (14) and the branch channel (22) adjacent to the second opening (14). The diameter of the first flow channel (212) remains consistent along its extension direction; Along the direction from the second opening (14) to the first opening (13), the diameter of the second flow channel (213) gradually decreases.

11. The check valve of claim 1, wherein The housing (1) includes a first housing and a second housing. The first housing is provided with a first flow channel groove, and the second housing is provided with a second flow channel groove. The first housing and the second housing are connected so that the first flow channel groove and the second flow channel groove are joined together to form the flow channel (2).

12. A washing system characterized by, Includes the one-way valve as described in any one of claims 1-11.

13. A vehicle characterized by comprising: Includes the one-way valve as described in any one of claims 1-11 or the washing system as described in claim 12.

Images