Cleaning system

Abstract

A cleaning system (100) for cleaning target surfaces (specifically, two or more target surfaces) of a vehicle, the cleaning system comprising: a chamber (101) for receiving fluid, the chamber including an inlet (102) for supplying the fluid into the chamber and one or more fluid outlets (103) for distributing the fluid out of the chamber; at least one plate (104) including a through-hole (105) and at least partially disposed within at least the chamber (101); an operating device (300) connected to the at least one plate (104); and a control unit (ECU) configured to actuate the operating device (300) according to a cleaning command to move the plate (104) until the through-hole (105) of at least the plate (104) is at least partially in fluid communication with the one, two or more outlets (103), thereby at least defining a flow channel for the fluid to flow out of the chamber (101) toward the target surface to be cleaned according to the cleaning command. The system may include a second chamber (201), and the system may include a second plate (204). A method for operating a cleaning system for distributing fluid to target surfaces of a vehicle is also provided.

Description

[0001] This application claims the benefit of European patent application EP24382227, filed on March 1, 2024.

[0002] This disclosure relates to a cleaning system that can be used in vehicles. Specifically, the cleaning system can be a fluid distribution system for cleaning vehicles and / or motor vehicle components (e.g., sensors or optical components). Of course, other applications are also possible. A method for operating the cleaning system is also provided. Background Technology

[0003] Fluid distribution devices are known, in which fluid is pumped from a fluid source by a suitable pump and discharged toward a target surface through a fluid distributor (e.g., a nozzle). The pump can be connected to a corresponding fluid distributor or nozzle, such that all pumps operate in the same manner when the fluid distribution device is in operation.

[0004] Patent document EP3466774, filed in the name of the applicant of this disclosure, provides a cleaning system, specifically a fluid distribution system comprising: a fluid source for supplying fluid to one or more pumps; and a fluid distributor for receiving the fluid and spraying it toward at least one target surface. Furthermore, at least one control unit is provided for operating at least one selected pump for supplying fluid according to a received cleaning command for cleaning at least one target surface. A fluid distributor or manifold is also provided. The fluid distributor has an inlet for receiving fluid from the pumps. Additionally, the fluid distributor has a plurality of outlets for distributing fluid toward at least one target surface. In use, the control unit actuates at least one control valve according to a received command for cleaning one or more target surfaces. The at least one control valve is arranged between the manifold and the fluid distributor for controlling the flow rate of the fluid to be delivered to the target surface.

[0005] Although the cleaning systems mentioned above have proven to be efficient, there remains a need for simpler and more cost-effective cleaning systems. Summary of the Invention

[0006] The purpose of this invention is to provide a cleaning system. The cleaning system includes: - A room, which includes one or more exits; - A plate including through holes, wherein the plate is at least partially disposed within the interior; - An operating device, at least connected to the plate, for at least moving the plate; and - A control unit, electrically connected to the operating device and configured to control the movement of the plate to provide fluid communication between at least one or more outlets and the through-holes.

[0007] Fluid communication allows fluid to be sprayed or discharged onto one or more target surfaces. For this purpose, at least one flow channel is defined by the alignment of a through-hole and the outlet of a chamber, allowing fluid to flow from the chamber through the outlet toward at least one target surface. The target surface is in fluid contact with at least the outlet of the chamber. One or more outlets of the chamber include the outlet itself or a selected outlet, which is selected by a control unit according to a cleaning command. A cleaning command is a request or instruction to clean a specific target surface. The cleaning command can be received or generated by the control unit. Therefore, when a cleaning command is received or generated by the control unit, the control unit is configured to control an operating device to move a plate, thereby providing at least fluid communication between the selected outlet and the through-hole to clean the desired target surface according to the cleaning command.

[0008] One or more target surfaces may include two or more target surfaces. Preferably, the one (or two) or more target surfaces include a target surface or a first target surface, and optionally include multiple target surfaces, such as a second target surface. For example, when optical contaminants are detected on the first target surface, the cleaning command may be a first cleaning command to clean the first target surface. In this case, the selected outlet may be the first outlet of the chamber. As described below, the first outlet of the chamber may optionally include multiple fluid outlets. In any case, the first target surface is at least in fluid connection to the first outlet of the chamber. Furthermore, for example, when optical contaminants are detected on the second target surface, the control unit may preferably be configured to receive or generate a second cleaning command to clean the second target surface. In this case, the selected outlet may be the second outlet of the chamber, as described below. The second target surface may be at least in fluid connection to the second outlet of the chamber. Thus, the plate may move at least from a first position to a second position, wherein a (first) fluid communication is provided in the first position and a third fluid communication is provided in the second position, as will be explained further below.

[0009] The chamber of the cleaning system is adapted to contain a fluid, such as a first fluid. The chamber, or first chamber, or first fluid chamber may include a housing and an internal space configured to contain the fluid. The chamber includes one or more inlets and one or more outlets. The one or more inlets are adapted to supply fluid into the chamber. Preferably, the one or more inlets may include a first inlet for supplying fluid into the chamber. The one or more outlets are adapted to dispensing fluid from the chamber to one or more target surfaces to be cleaned. As explained, the one or more outlets may also include a first outlet of the chamber for dispensing fluid from the chamber toward the first target surface. More preferably, the one or more outlets may also include a second outlet of the chamber, different from the first outlet, for dispensing fluid from the chamber to the second target surface. As explained, the one or more target surfaces to be cleaned include a first target surface. Preferably, the one or more target surfaces to be cleaned may also include a second target surface. The first target surface is in fluid connection at least with a first outlet of the chamber, wherein the second target surface may be in fluid connection at least with a second outlet of the chamber.

[0010] Preferably, the cleaning system further includes a second chamber. The second chamber is adapted to receive a fluid, which may be the same as or different from the fluid contained in the (first) chamber. For clarity, the fluid contained or received by the second chamber is referred to as the second fluid. Therefore, the second chamber may include an internal space and a housing to contain the second fluid. The housing of the second chamber may include sealing devices, as described below. The second chamber may include one or more inlets and one or more outlets. The one or more inlets are adapted to supply the second fluid into the second chamber. Preferably, the one or more inlets of the second chamber may include a first inlet for supplying the second fluid into the second chamber. The first inlet of the second chamber may be separate and different from the first inlet of the (first) chamber for supplying the second fluid into the second chamber or the internal space of the second chamber. The one or more outlets of the second chamber are adapted to dispense the second fluid from the second chamber to one or more target surfaces to be cleaned. The one or more outlets of the second chamber may also include a first outlet of the second chamber for dispensing the second fluid from the second chamber to a first target surface. More preferably, the one or more outlets of the second chamber may also include a second outlet of the second chamber, different from the first outlet of the second chamber, for dispensing the second fluid from the second chamber to a second target surface. Therefore, the first target surface can receive fluid and the second fluid from the first outlet of the chamber and the first outlet of the second chamber. In other words, the first outlet of the chamber and the first outlet of the second chamber can be fluidly connected to the first target surface. Furthermore, the second target surface can receive fluid and the second fluid from the second outlet of the chamber and the second outlet of the second chamber. In other words, the second outlet of the chamber and the second outlet of the second chamber can be fluidly connected to the second target surface.

[0011] Preferably, a second through-hole may be provided. It may be at least partially disposed within the second chamber. Furthermore, the second through-hole may be provided in the plate or in the second plate. If a second plate is provided, the second plate may be connected to an operating device to at least move the second plate; for example, the operating device may be connected to both the plate and the second plate to move them, as explained below.

[0012] The cleaning system may also include one or more fluid distributors adapted to spray or discharge fluid onto one or more target surfaces. The cleaning system may also include a supply line, which is a fluid guiding device, such as a pipe, tube, or hose, for directing fluid from one or more outlets of the first and / or second chambers into the fluid distributor. For example, a pipe, tube, or hose may be used to direct (first) fluid or a second fluid into the fluid distributor. In other words, the supply line may be adapted to connect the outlet fluid of the first and / or second chambers to one or more fluid distributors.

[0013] Preferably, a (first) fluid can be supplied to the fluid distributor. A second fluid can also be supplied to the fluid distributor. The fluid distributor can be configured to spray the first and second fluids through the same orifice onto at least a target surface. More preferably, the fluid distributor can be configured to spray a mixed fluid, which is a mixture of the (first) and second fluids, onto at least the target surface. More preferably, the fluid distributor can be a mixing nozzle. Preferably, the first and second fluids are supplied to the mixing nozzle. The mixing nozzle can be adapted to separately receive (e.g., unmixed) the first and second fluids from one or more outlets of a chamber and one or more outlets of a second chamber, and combine them to obtain a mixed fluid. The mixing nozzle can also be adapted to spray the mixed fluid onto at least a target surface, such as a first target surface or a second target surface.

[0014] The cleaning system may be provided with at least one fluid distribution selector. A fluid distribution selector, such as a first fluid distribution selector, is a device that may include the aforementioned chamber (e.g., a first chamber) and a plate within that chamber. Optionally, within the scope of this disclosure, the cleaning system may be provided with another fluid distribution selector, such as a second fluid distribution selector. In this case, the second fluid distribution selector may be a device that includes a second chamber and a second plate within that second chamber. In other words, the fluid distribution selector may include the first chamber, and the second fluid distribution selector may include the second chamber. Thus, the chamber and the second chamber are separate from each other and arranged in different devices. Alternatively, the second chamber may be included in the first fluid distribution selector. In other words, the first fluid distribution selector may include a sealing device, such as a gasket, which divides its internal space into two different chambers: the first chamber and the second chamber. Preferably, the aforementioned housing of the second chamber may include the sealing device. Preferably, the first chamber includes the second chamber, or the second chamber includes the first chamber. In any case, it is preferred that both chambers are waterproof chambers, preventing the fluid and the second fluid from contacting or mixing. In other words, the first and second chambers are two independent fluid chambers, each for a different cleaning fluid (e.g., cleaning fluid and compressed gas, respectively). These fluid chambers can be located in a single fluid distribution selector or in two different fluid distribution selectors.

[0015] A through-hole provided in the plate is configured to allow fluid to pass through. Within the meaning of this disclosure, a through-hole should not necessarily be understood as a single hole; rather, a through-hole may include multiple through openings, such as two or more through openings. Therefore, when the outlet of the chamber and the through openings of the through-hole are arranged to be at least partially in fluid communication, they can define at least a flow path to allow fluid to flow from the chamber to one or more target surfaces.

[0016] Preferably, the outlet from the chamber or second chamber, such as the first outlet and / or second outlet of the first and / or second chamber, may include a set of fluid outlets. The set of fluid outlets may include two or more fluid outlets, wherein at least one of the fluid outlets is positioned closer to a side surface of the housing (described further below) than at least another fluid outlet. If the plate and / or the second plate rotates about its axis of rotation (explained further below), at least one of the fluid outlets is positioned closer to the axis of rotation than at least another fluid outlet. Furthermore, the through-hole may have a larger area than the fluid outlets. Preferably, the through-hole may have an area at least twice (more preferably, three times) the area of ​​at least one of the fluid outlets. In practice, the through-hole may be larger than the sum of the areas of two fluid outlets belonging to the set of fluid outlets. In use, the through-hole may be in fluid communication with two or more fluid outlets in the set of fluid outlets simultaneously, thereby defining at least two or more flow channels for fluid to flow out of the chamber, wherein two or more target surfaces are in fluid connection with two or more fluid outlets. This allows the cleaning system to clean two or more target surfaces simultaneously. Even more preferably, two or more through openings of the through-hole and / or the second through-hole can be at least partially in fluid communication with two or more fluid outlets of one or more outlets to define two distinct flow channels, e.g., fluid connections, for simultaneously cleaning two or more target surfaces. In other words, the first through opening of the (first) through-hole can be arranged at least partially aligned with the first fluid outlet of the first outlet, thereby defining at least one flow channel for fluid to flow out of the chamber, and simultaneously, the second through opening of the (first) through-hole can be arranged at least partially aligned with the second fluid outlet of the first outlet, thereby defining at least one flow channel for fluid to flow out of the chamber, wherein the two flow channels are configured to face the same or different target surfaces. This can be particularly advantageous when optical contaminants are detected on both the first and second target surfaces and it is necessary to remove both optical contaminants simultaneously without necessarily cleaning one target surface before cleaning the other. In this way, safety is improved. Through this disclosure, the two or more target surfaces can be the same target surface or different target surfaces, and can belong to or not belong to the same target object.

[0017] Preferably, the second through-hole can be configured to allow a second fluid to pass through it. As explained, the second through-hole can be located within a second internal space. Thus, when the outlet of the second chamber and the through opening of the second through-hole are at least partially in fluid communication, they can at least define at least one flow path for the second fluid to flow from the second chamber to one or more target surfaces. Furthermore, the second through-hole may include one or more through openings. Therefore, within the meaning of this disclosure, the second through-hole is not necessarily to be understood as a single hole; rather, the second through-hole may include multiple through openings. Other features of the (first) through-hole can be similarly applied to the second through-hole.

[0018] Preferably, the cleaning system further includes a second plate, wherein the second plate may include a second through-hole. Furthermore, the second plate may be at least partially arranged inside at least a second chamber. Additionally, the aforementioned operating device may be connected to the second plate. Moreover, the first and second plates are separate plates. Furthermore, the first and / or second plate can be of any shape; for example, the first and / or second plate may be a disc, annular plate, quadrilateral plate, rectangular plate, or circular or near-circular plate. In practice, preferably, the first and / or second plate may be constructed from flat and thin sheets of material (ceramic) respectively provided with the aforementioned through-hole and second through-hole.

[0019] As explained, the plate can be at least partially arranged inside at least the first chamber. Furthermore, when a second plate is provided, the second plate can be at least partially arranged inside at least the second chamber or the second interior space. When the first and second chambers are implemented in the same fluid distribution selector, the plate can be at least partially arranged inside at least the first and second chambers. Preferably, the plate and the housing of the chamber can be arranged to be in close contact with each other at a common interface. Alternatively, the cleaning system can also include an additional plate arranged inside the chamber. The additional plate can be attached to the housing of the chamber or arranged as an integral part of the housing. In this way, the plate and the additional plate can be arranged to be in close contact with each other at a common interface. As will be described below, in operation, the plate moves relative to the additional plate or relative to the housing. Grease or lubrication can be provided between the plate and the additional plate or between the plate and the housing. Similarly, the second plate and the housing of the second chamber can be arranged to be in close contact with each other at a common interface. Alternatively, preferably, the cleaning system can also include a second additional plate arranged inside the second chamber. The second additional plate can be attached to the housing of the second chamber or arranged as an integral part of the housing of the second chamber. In this way, the second plate and the second additional plate can be arranged to be in close contact with each other at a common interface. In operation, the second plate moves relative to the second additional plate (when the second additional plate is provided) or relative to the housing of the second chamber.

[0020] The operating device may include a motor or actuator. The operating device may also include a drive mechanism. Preferably, the drive mechanism may include a shaft or gear system or a belt. The motor or actuator may be adapted to drive the drive mechanism for moving at least one plate and / or a second plate (if a second plate is provided).

[0021] In this disclosure, a "control unit configured to control an operating device" may include: a control unit that communicates with the operating device via wired or wireless communication, such that one or more signal commands can be sent by the control unit and received by the operating device, enabling the sending and / or receiving of movement or stop commands. A cleaning command signal or cleaning command may be generated by the control unit. The cleaning command may be received by the control unit via any wired or wireless communication device.

[0022] Preferably, the cleaning system may further include a first fluid pressure generator and / or a second fluid pressure generator. The first fluid pressure generator may be fluidly connected to a first fluid source and configured to supply (first) fluid to the (first) chamber through one or more inlets. More preferably, the first fluid pressure generator may be connected to a second fluid source. The second fluid pressure generator may be fluidly configured to supply second fluid to the second chamber through one or more inlets of the second chamber. In an example, the second fluid source may be the external environment of the vehicle, such as air outside the vehicle.

[0023] The first fluid and the second fluid are cleaning fluids. Preferably, the first fluid may include a cleaning liquid and the second fluid may include compressed gas. More preferably, the first fluid may be a cleaning liquid, such as a liquid that may include water, detergent, chemical products, or combinations thereof. The second fluid may be compressed air.

[0024] Preferably, the cleaning system of the present invention further includes a first fluid source and / or a second fluid source. Furthermore, the first or second fluid pressure generator can be one or more pumps and / or one or more gas compressors. More preferably, the first fluid pressure generator can be one or more pumps. Thus, one or more pumps can be fluidly connected to the first fluid source and configured to supply cleaning fluid to the chamber through one or more inlets. Furthermore, the second fluid pressure generator can be one or more gas compressors, such as air compressors. Thus, one or more gas compressors can be configured to supply compressed gas to the second chamber through one or more inlets. One or more gas compressors can be fluidly connected to the second fluid source.

[0025] The control unit is configured to control the operating device to provide (first) fluid communication according to a cleaning command. Thus, fluid can be sprayed or discharged onto at least a target surface that is in fluid communication with the outlet of the chamber (e.g., the first outlet of the chamber). Preferably, the target surface can be a first target surface. Providing (first) fluid communication can be achieved by positioning the through-hole and the outlet of the chamber (e.g., the first outlet of the chamber) in fluid communication with each other. In other words, the through-hole and the first outlet of the chamber can be at least partially aligned. Providing said (first) fluid communication may include: a movable plate such that, in use, the through-hole is in fluid communication with the first outlet of the chamber.

[0026] Preferably, the control unit may also be configured to control the cleaning system (e.g., operating device) to provide a second fluid communication according to a cleaning command. Thus, the second fluid can be sprayed or discharged onto at least a target surface that is in fluid communication with the outlet of the second chamber (e.g., the first outlet of the second chamber). Preferably, the target surface may be a first target surface. Even more preferably, providing the second fluid communication can be achieved by positioning the second through-hole and the outlet of the second chamber (e.g., the first outlet of the second chamber) in fluid communication with each other. In other words, the second through-hole and the first outlet of the second chamber may be at least partially aligned. Providing the second fluid communication may include moving a plate including the second through-hole such that, in use, the second through-hole is in fluid communication with the first outlet of the second chamber. As described above, the plate including the second through-hole may be a (first) plate or a second plate.

[0027] Preferably, the control unit may also be configured to control the operating device to provide a third fluid communication according to a second cleaning command. Thus, the (first) fluid can be sprayed or discharged onto at least a target surface that is in fluid communication with the outlet of the chamber (e.g., the second outlet of the first chamber). Preferably, the target surface may be a second target surface. Providing the third fluid communication can be achieved by positioning the through-hole and the outlet of the chamber (e.g., the second outlet of the first chamber) in fluid communication with each other. In other words, the through-hole and the second outlet of the (first) chamber can be at least partially aligned. Providing the third fluid communication may include: a movable plate such that, in use, the through-hole is in fluid communication with the second outlet of the first chamber.

[0028] Preferably, the control unit may also be configured to control the cleaning system (e.g., operating device) to provide a fourth fluid communication according to a second cleaning command. Thus, the second fluid can be sprayed or discharged onto at least a target surface that is in fluid communication with the outlet of the second chamber (e.g., the second outlet of the second chamber). Preferably, the target surface may be a second target surface. Even more preferably, providing the fourth fluid communication can be achieved by positioning the second through-hole and the outlet of the second chamber (e.g., the second outlet of the second chamber) in fluid communication with each other. In other words, the second through-hole and the second outlet of the second chamber may be at least partially aligned. Providing the fourth fluid communication may include moving a plate including the second through-hole such that, in use, the second through-hole is in fluid communication with the second outlet of the second chamber. As described above, the plate including the second through-hole may be a (first) plate or a second plate.

[0029] Preferably, the control unit may also be configured to provide the second fluid connection at least at a predetermined time threshold after the first fluid connection is blocked. Alternatively, the control unit may also be configured to provide the second fluid connection at least at a time when the first fluid connection is provided (e.g., at least at a time when both the first and second fluid connections are provided simultaneously). If the two fluid connections are provided simultaneously, it is even more preferable to supply the first and second fluids to a fluid distributor, for example, to the same fluid distributor.

[0030] As explained, a (first) fluid communication can be provided when the through-hole and the outlet of the first chamber (e.g., the first outlet of the chamber) are in fluid communication with each other. Furthermore, a second fluid communication can be provided when the second through-hole and the outlet of the second chamber (e.g., the first outlet of the second chamber) are in fluid communication with each other. The (first) fluid communication can be blocked by positioning the first through-hole so that it is not in fluid communication with the outlet of the first chamber (e.g., misaligned). Additionally, the second fluid communication can be blocked by positioning the second through-hole so that it is not in fluid communication with the outlet of the second chamber (e.g., the first outlet of the second chamber) (e.g., misaligned). Furthermore, a third fluid communication can be provided when the through-hole and the outlet of the first chamber (e.g., the second outlet of the chamber) are in fluid communication with each other. A fourth fluid communication can be provided when the second through-hole and the outlet of the second chamber (e.g., the second outlet of the second chamber) are in fluid communication with each other. The third fluid communication can be blocked by positioning the first through-hole so that it is not in fluid communication with the outlet of the first chamber (e.g., the second outlet of the chamber) (e.g., misaligned). Additionally, by positioning the second through-hole to be in no fluid communication with the outlet of the second chamber (e.g., the second outlet of the second chamber) (e.g., misalignment), it is possible to prevent fourth fluid communication.

[0031] The control unit may also be configured to control the cleaning system according to a cleaning command to spray a first fluid and / or a second fluid using a cleaning cycle comprising alternating pulses. In other words, the control unit may also be configured to control the operating devices for the cleaning system and / or the first fluid pressure generator and / or the second fluid pressure generator to spray fluid ((first) fluid and / or second fluid) at alternating pulses onto one, two, or more target surfaces. Thus, the cleaning system is capable of spraying fluid at a predetermined pulse rate. This means that the fluid (either the (first) fluid or the second fluid) cannot have a constant pressure or velocity over time, but rather the fluid can have alternating levels of pressure or velocity over time. For example, the alternating pulses can be instantaneous changes in the amount of fluid propagating per unit time. In other words, the fluid is not constant, but can be regularly interrupted or drastically reduced in pressure or velocity over short periods of time. In short, the fluid flow can be discontinuous. As described below, the duration of such interruption or reduction in pressure or velocity can be from 0.2 seconds to 2 seconds.

[0032] The cleaning system can distribute fluid out of the first chamber and / or a second chamber in alternating pulses (thus defining a cleaning cycle). Preferably, the cleaning cycle may include: Provides (first) fluid communication, ON1 state, for discharging fluid to at least the target surface; and Prevent (first) fluid communication, OFF1 state.

[0033] Preferably, the cleaning cycle further includes repeating the above (e.g., ON1-OFF1 state) at least N times within a predetermined repetition time threshold, where N is two or more times. For example, fluid communication is provided with alternating pulses of ON1-OFF1-ON1-OFF1.

[0034] The cleaning cycle may also include: A second fluid connection is provided at least at some point after the fluid connection is blocked, in an ON2 state, for discharging the second fluid onto at least the target surface, the second fluid connection being provided within a predetermined time threshold; and To prevent the second fluid communication, in the OFF2 state, preferably by moving the second through hole, so that during use, the outlets of the second through hole and the second chamber are not in fluid communication with each other.

[0035] Preferably, the cleaning cycle further includes repeating the above (e.g., ON2-OFF2 state) at least N times within a predetermined repetition time threshold, where N is two or more times. For example, providing second fluid communication with alternating pulses of ON2-OFF2-ON2-OFF2. More preferably, the control unit may also be configured to control the cleaning system to spray the first and second fluids with alternating pulses of, for example, ON1-OFF1-ON2-OFF2-ON1-OFF1-ON2-OFF2. It may still be ON1-OFF1-ON1-OFF1-ON2-OFF2.

[0036] The predetermined time threshold is shorter than the predetermined repetition time threshold. Furthermore, the predetermined repetition time threshold can have a duration of 0.1 to 2 seconds. Additionally, the predetermined time threshold can have a duration of less than 0.5 seconds. The predetermined time threshold can be timed from the moment (first) fluid communication is blocked. Both the predetermined repetition time threshold and the predetermined time threshold can be stored in the control unit.

[0037] In use, the second fluid can provide a greater velocity toward one or more target surfaces to the (first) fluid. That is, the pressure of the first fluid in the first fluid communication is lower than the pressure of the second fluid in the second fluid communication, causing the second fluid to provide a greater velocity toward the target surface during use. Therefore, cleaning is more efficient.

[0038] As described above, the second fluid can be a compressed gas, such as compressed air. Preferably, the second fluid may have a pressure greater than that of the (first) fluid. Even more preferably, the second fluid has a pressure at least two bar greater than that of the (first) fluid. More preferably, the second fluid used for the second fluid communication may have a higher velocity when flowing toward the fluid distributor outlet chamber than the velocity of the (first) fluid in the first fluid communication when flowing toward the fluid distributor outlet chamber, such that in use, the compressed gas can come into contact with the cleaning fluid, thus advantageously increasing the velocity of the cleaning fluid. Therefore, the compressed gas entering at a higher velocity than the cleaning fluid can "push" the cleaning fluid, causing the cleaning fluid to acquire a higher (exit) velocity toward one or more target surfaces. In other words, when sprayed by the fluid distributor, the velocity of the cleaning fluid can be higher than the velocity before being "hit" from behind by a burst of compressed gas. In short, the cleaning system can spray droplets or a predetermined volume of cleaning fluid (so-called "liquid bullets"), thereby realizing the so-called "machine gun" concept, whereby the cleaning fluid is provided with an increased discharge velocity due to the compressed gas. Therefore, the present invention achieves improved efficiency in removing both the first fluid (e.g., drying the cleaning fluid) and optical contaminants from the target surface by using a subsequent second fluid (e.g., compressed gas).

[0039] In examples where the second fluid is not used to impart greater velocity to the (first) fluid, it is still possible, within the sense of this disclosure, that the compressed gas can still blow away the cleaning fluid from the target surface at least at some point within a predetermined time threshold after the cleaning fluid is blocked. In this case, the purpose of the second fluid is to remove the first fluid from one or more target surfaces, for example, to dry them.

[0040] The control unit may include a memory for storing the positions of the through-holes relative to one or more outlets of the chamber, and optionally, the positions of the through-holes relative to one or more outlets of the second chamber. Preferably, the positions of each through-opening of the through-hole relative to a first outlet and a second outlet of the chamber, and optionally, the positions of the through-hole relative to a first outlet and a second outlet of the second chamber. Furthermore, the positions of each through-opening of the through-hole relative to a set of fluid outlets of the aforementioned outlets may also be stored in the control unit. More preferably, the relationships between the outlets of the chamber (e.g., the first outlet and the second outlet) and the relevant target surfaces to be cleaned (e.g., the first target surface and the second target surface) may be stored in the control unit. In use, the control unit may be configured to control an operating device according to a first cleaning command or a second cleaning command to move the first plate to at least one position indicated by the memory. Therefore, the plate positions corresponding to different plate movements can be controlled by the control unit. Thus, when the first target surface must be cleaned, the control unit may be configured to operate the operating device according to a first cleaning command to move the (first) plate, thereby positioning the through-hole in fluid communication with the first outlet or a selected outlet, the position of which is pre-stored in the control unit. When the second target surface must be cleaned, the control unit can be configured to operate the operating device to move the (first) plate according to the second cleaning command, thereby positioning the through hole in fluid communication with the second outlet or selected outlet of the chamber, the position of the second outlet being pre-stored in the control unit.

[0041] Furthermore, the control unit's memory can be configured to store the location of the second through-hole relative to at least one or more outlets of the second chamber (e.g., the first and second outlets of the second chamber), such that the control unit can be configured to control the operating device according to a second cleaning command to move the plate including the second through-hole to at least one location indicated by the memory. Therefore, when a second fluid needs to be sprayed to clean or dry a first or second target surface, the control unit can be configured to control the operating device according to a first and / or second cleaning command to move the plate including the second through-hole, such that the second through-hole is positioned in fluid communication with the first outlet of the second chamber to clean the first target surface or in fluid communication with the second outlet of the second chamber to clean the second target surface. The first and second outlets of the second chamber are pre-stored in the control unit. For example, if the target surface needs to be cleaned, according to the first cleaning command, the control unit can read the memory to control the operating device to the location indicated by the memory, such that the combination of the through-hole and the fluid outlet at least defines a flow path toward any one or more surfaces of the first target surface. In these examples, the memory advantageously stores how the plate will need to be moved. For example, if the first plate is a disc, the movement can include turning the disc by a specific degree in a clockwise or counterclockwise direction. For example, if the first plate is a quadrilateral plate, the movement may include shifting the plate by a first distance in a first direction and / or by a second distance in a second direction. In some examples, the cleaning system may also include a sensor for sensing the position of the first plate relative to at least one of the outlets of the chamber. In short, when the control unit receives or generates a cleaning command, the control unit is configured to determine one or more selected outlets to cause the operating device to move the plate, thereby aligning the through-holes and one or more selected outlets to provide fluid communication and thus creating a desired flow channel to spray fluid onto the target surface to be cleaned according to the cleaning command.

[0042] The first and second outlets of the chamber are angularly displaced relative to the axis of rotation of the plate (e.g., the disc). More outlets can be provided. For example, a third outlet or even four or more outlets can be provided. Preferably, the second outlet can be angularly arranged between the first and third outlets of the chamber. As explained, the plate can be moved, for example, rotated about its axis of rotation, thereby providing alignment between the through-holes and the different outlets as needed. In other words, the plate can be moved to multiple positions. The first position of the plate is when the through-holes and the first outlet of the chamber are substantially aligned with each other. Furthermore, the second position of the plate is when the through-holes and the second outlet of the chamber are substantially aligned with each other. Moreover, the third position of the plate is when the through-holes and the third outlet of the chamber are substantially aligned with each other. Furthermore, the fourth position of the plate is when the through-holes and the fourth outlet of the chamber are substantially aligned with each other. The second position of the plate can be angularly displaced between the first and third positions. In other words, in the example, the second position is an intermediate position when the plate moves from the first position to the third position or from the third position to the first position. Therefore, when the plate moves from the first position to the third position or a selected position, the plate may inevitably pass through the intermediate second position, thus there may be a moment when the second outlet may be in fluid communication with the through-hole, allowing fluid to flow out of the chamber, which may result in undesirable fluid loss. To avoid fluid loss when the through-hole is in the intermediate position, this disclosure provides different solutions as explained in the following paragraphs.

[0043] In the example providing three positions, a change in the direction of movement or rotation of the plate in another direction can resolve the aforementioned drawbacks. If four or more positions are provided, a change in the direction or orientation of movement may not be sufficient to resolve these drawbacks.

[0044] To address the aforementioned drawbacks, the control unit can be configured to control the operating device such that, during use, the plate can only move if there is no fluid in the (first) chamber. In other words, when there is no fluid in the (first) chamber, the plate can move according to a (first) cleaning command. The control unit can also be configured to control the operating device to move the plate when fluid is not entering the chamber. In other words, the control unit can be configured to control the plate to move when fluid is not entering the chamber. Fluid is not entering the chamber when: - (First) The fluid pressure generator is not activated; -As described below, a first control valve is provided in fluid communication with a first inlet; - Prevents fluid communication between the through-hole and the chamber outlet. This could be because the plate moves fast enough to prevent fluid from passing through the chamber outlet, or because the through-hole and the chamber outlet are not in fluid communication.

[0045] Preferably, the cleaning system may include a first control valve disposed between a first fluid pressure generator and a chamber, including both at the first fluid pressure generator and at the chamber. Preferably, the first control valve may be arranged in fluid communication with a first inlet of the chamber. A control unit may be configured to operate the control valve such that, in use, the control valve allows and / or prevents (first) fluid flow into the chamber. Allowing fluid flow into the chamber may include allowing fluid into a chamber of a fluid distribution system. Preventing fluid flow into the chamber may include preventing fluid from entering the chamber. The aforementioned disadvantages related to fluid loss due to flow when the plate is in an intermediate position between a first position and a selected position can be addressed by the control valve, which may include an electrically operated valve or a solenoid valve.

[0046] This cleaning system can be a cleaning system for (motorized) vehicles. It can be of the type of fluid distribution system, particularly for cleaning target surfaces, preferably two or more target surfaces. For example, a vehicle cleaning system for cleaning parts such as optical sensors or their protective covers. The target surface, such as a first target surface, can be the surface to be cleaned or a portion of the surface of a target object. For example, the target surface can be a vehicle sensor or a part thereof, such as a protective cover for an optical device. For example, a vehicle sensor can be an image acquisition unit, such as a camera device, radar, lidar, etc.

[0047] According to one aspect of the present invention, a method for operating a cleaning system is also provided. The method includes: - The control unit generates or receives cleaning commands; - Preferably, a fluid pressure generator is operated to supply fluid to the chamber; - Preferably, fluid is prevented from entering the interior space of the chamber; - By moving the plate including the through-hole, fluid communication is provided between the through-hole and the first outlet of the chamber; - Preferably, fluid is allowed to enter the interior space of the chamber; fluid is discharged onto at least one target surface to be cleaned, the target surface being fluidly connected to a first outlet of the chamber; and preferably, after fluid is discharged onto at least the target surface, operation of the fluid pressure generator is stopped or fluid is prevented from entering the interior space of the chamber.

[0048] The method may also include: - Preferably, the second fluid pressure generator is operated to supply the second fluid to the second chamber; - Preferably, the second fluid is prevented from entering the interior space of the second chamber; - For example, a second fluid communication is provided by moving a plate arranged in the interior space and including a second through-hole to align the second through-hole with the first outlet of the second chamber; - Preferably, a second fluid is allowed to enter the interior space of the chamber; - A second fluid is discharged onto at least the target surface to be cleaned, the target surface being in fluid contact with the first outlet of the second chamber and the first outlet of the chamber; and - Preferably, after discharging the second fluid onto at least the target surface, the operation of the second fluid pressure generator is stopped or the second fluid is prevented from entering the interior space of the second chamber.

[0049] The method may also include: - The control unit generates or receives a second cleaning command; - By moving the plate including the through hole, a third fluid communication is provided between the through hole and the second outlet of the chamber; - Discharge fluid onto at least a second target surface to be cleaned, the second target surface being fluidly connected to a second outlet to the chamber; - Preferably, after the fluid is discharged onto at least the second target surface, the fluid is prevented from entering the interior space of the chamber; - For example, a fourth fluid communication is provided by moving a plate arranged in the interior space and including a second through-hole to align the second through-hole and the second outlet of the second chamber; - Discharge a second fluid to at least a second target surface to be cleaned, the second target surface being fluidly connected to a second outlet of the second chamber and a second outlet of the chamber; and - Preferably, after the second fluid is discharged onto at least the second target surface, the second fluid is prevented from entering the interior space of the second chamber.

[0050] The method may further include: discharging a first fluid and / or a second fluid onto at least the target surface in alternating pulses.

[0051] Preferably, the method may further include: Provides primary fluid connectivity; Prevent fluid communication; A second fluid connection is provided at least at some point after the first fluid connection is blocked, the second fluid connection being provided within a predetermined time threshold; and Preferably, the second fluid communication is blocked.

[0052] The steps of providing or preventing fluid communication may include: moving the through-hole and the second through-hole, as described above.

[0053] For the sake of completeness, the following terms are proposed: Clause 1. A cleaning system comprising: - A first chamber (101) comprising: one or more inlets (102) for supplying a first fluid (f1) into the first chamber (101); and one or more outlets (103) for dispensing the first fluid (f1) from the first chamber (101) toward one or more target surfaces (600) to be cleaned; - A second chamber (201), comprising: one or more inlets (202) for supplying a second fluid (f2) into the second chamber (201); and one or more outlets (203) for dispensing the second fluid (f2) from the second chamber (201) toward one or more target surfaces (600) to be cleaned; and - A control unit (ECU) configured to control the cleaning system according to a cleaning command to spray the first fluid (f1) and the second fluid (f2) onto one or more target surfaces (600), wherein at least the first fluid (f1) is sprayed using a cleaning cycle including alternating pulses.

[0054] Clause 2. The cleaning system according to Clause 1, wherein the cleaning cycle comprises: Provides a first fluid connection (108-1), ON1 state, for discharging the first fluid (f1) onto at least a first target surface (601), said at least a first target surface being fluidly connected to at least one outlet (103-1) of the chamber (101); and Prevent the fluid communication (108-1), OFF1 state. The cleaning cycle further includes repeating the above steps at least N times within a predetermined repetition time threshold, where N is two or more times.

[0055] Clause 3. The cleaning system according to any one of the preceding clauses, wherein the second fluid (f2) is also sprayed in alternating pulses.

[0056] Clause 4. The cleaning system according to Clause 2 or 3, wherein the cleaning cycle further comprises: A second fluid connection (208-2), in an ON2 state, is provided at least at some point after the first fluid connection (108-1) is blocked, for discharging the second fluid (f2) onto at least a target surface (601), the target surface being fluidly connected to at least one outlet (203-1) of the second chamber, the second fluid connection (208-2) being provided within a predetermined time threshold; and Optionally, the second fluid communication (208-2) is blocked, OFF2 state. The cleaning cycle further includes repeating the above steps at least N times within a predetermined repetition time threshold, where N is two or more times.

[0057] Clause 5. The cleaning system according to Clause 4, wherein the predetermined time threshold is shorter than the predetermined repetition time threshold.

[0058] Clause 6. The cleaning system according to any one of Clauses 4 to 5, wherein the predetermined repetition time threshold has a duration of 0.1 to 2 seconds.

[0059] Clause 7. The cleaning system according to any one of Clauses 4 to 6, wherein the predetermined time threshold has a duration of less than 0.5 seconds.

[0060] Clause 8. The cleaning system according to any one of Clauses 2 to 7, wherein the amount of fluid sprayed during the ON1 state can be from 0.05 to 15 cm. 3 Preferably, it is 0.1 to 10 cm 3 More preferably 0.2 to 5 cm 3 .

[0061] Clause 9. The cleaning system according to any one of the preceding clauses, wherein the at least one outlet (103-1) of the chamber and the at least one outlet (203-1) of the second chamber (201) are in liquid connection with each other.

[0062] Clause 10. The cleaning system according to any one of the preceding clauses, wherein the cleaning system further comprises a fluid distributor that supplies the first fluid (f1) and the second fluid (f2) and is configured to spray the first fluid (f1) and the second fluid (f2) through the same orifice.

[0063] Clause 11. The cleaning system according to any one of the preceding clauses, wherein the fluid distributor is a mixing nozzle fluidly connected to at least one outlet (103-1) of the chamber and at least one outlet (203-1) of the second chamber (201), wherein, in use, the mixing nozzle is configured to spray the mixed fluid onto at least the first target object (601).

[0064] Clause 12. The cleaning system according to any one of the preceding clauses, wherein the cleaning system further includes an operating device (300), wherein the control unit (ECU) is further configured to control the operating device (300) to spray at least the first fluid (f1) onto one or more target surfaces (600) using the cleaning cycle including the alternating pulses.

[0065] Clause 13. A cleaning system according to any one of the preceding clauses, wherein the operating device (300) is at least connected to a plate (104) including a through hole (105), wherein providing the first fluid communication (108-1) comprises: moving the plate (104) to fluidly communicate the through hole (105) and the at least one outlet (103-1) of the first chamber, thereby defining at least a flow path for the first fluid (f1) to flow from the first chamber (101) through the at least one outlet (103-1) of the first chamber toward at least the first target surface (601), wherein the control unit (ECU) is configured to control the operating device (300) to: Provides the first fluid communication (108-1) between the through-hole (105) and the at least one outlet (103-1) of the first chamber, in the ON1 state; and The first fluid communication (108-1) between the through hole (105) and the at least one outlet (103-1) of the first chamber is blocked, OFF1 state.

[0066] Clause 14. The cleaning system according to any one of the preceding clauses, wherein the operating device (300) is further adapted to move the second through-hole (205) such that, in use, the second through-hole (205) is in fluid communication with the at least one outlet (203-1) of the second chamber, wherein the control unit (ECU) is further configured to control the operating device (300) to: Provides a second fluid connection (208-2) between the second through-hole (205) and at least one outlet (203-1) of the second chamber, in an ON2 state; and The second fluid communication (208-2) between the second through hole (205) and the at least one outlet (203-1) of the second chamber is blocked, OFF2 state.

[0067] Clause 15. A cleaning method, said cleaning method comprising: - A first fluid (f1) is supplied into a chamber (101), which is in fluid connection with one or more target surfaces (600) to be cleaned; - A second fluid (f2) is supplied to a second chamber (201), which is fluidly connected to one or two or more target surfaces (600) to be cleaned; - Receive or generate cleaning commands; and - The first fluid (f1) and the second fluid (f2) are sprayed onto the one or more target surfaces (600), wherein at least the first fluid (f1) is sprayed using a cleaning cycle including alternating pulses, and preferably, the second fluid (f2) is also sprayed with alternating pulses. Attached Figure Description

[0068] Non-limiting embodiments of this disclosure will be described below with reference to the accompanying drawings, in which: Figure 1 An example of a cleaning system for vehicles is illustrated, designed to remove optical contaminants from two or more target surfaces.

[0069] Figure 2A , Figure 2B and Figure 2C This is a schematic diagram showing three examples of a fluid dispenser used to spray a first fluid and a second fluid onto one or more target surfaces to be cleaned.

[0070] Figure 3 This is an exploded view of the fluid distribution selector.

[0071] Figure 4 This is a cross-sectional view of the fluid distribution selector.

[0072] Figure 5A It is a schematic cross-sectional view of a cleaning system including a first fluid distribution selector and a second fluid distribution selector.

[0073] Figure 5B It is a schematic cross-sectional view of a cleaning system including a first fluid distribution selector, which includes a first chamber and a second chamber.

[0074] Figure 6 This is a rear view of a portion of the front surface of the first chamber's shell and an example of a plate.

[0075] Figure 7A This is a schematic diagram of an example of a disc-shaped plate on a portion of the shell of the first chamber. Specifically, Figure 7A The location of the through opening relative to the fluid outlet of the chamber is shown, which is used to provide fluid communication.

[0076] Figure 7BThis is a schematic diagram of an example of a disc-shaped plate on a portion of the housing in the first chamber when the disc-shaped plate has been rotated or moved. Specifically, Figure 7B The location of the through opening relative to the fluid outlet of the chamber is shown, intended to prevent fluid communication. More specifically, the disc plate is arranged in the non-clean NCP location.

[0077] Figure 8 This is a rear view of an example of a fluid distribution selector.

[0078] Figure 9 It is a schematic diagram of a first fluid distribution selector and a second fluid distribution selector, wherein the first plate of the first fluid distribution selector and the second plate of the second fluid distribution selector move in tandem, as an example of the concept referred to throughout this disclosure as a "machine gun".

[0079] Figure 10A , Figure 10B , Figure 10C It is a fluid diagram illustrating three different possibilities for providing and preventing the first and second fluid connections. Detailed Implementation

[0080] Figure 1 A cleaning system is shown, which includes a first chamber 101, a second chamber 201, an operating device 300, and a control unit ECU.

[0081] A first chamber 101 is adapted to receive a first fluid f1. The first fluid f1 is a cleaning fluid. The first chamber 101 includes an inlet 102 for supplying the first fluid f1 into the first chamber 101. As shown, a plurality of inlets 102 of the first chamber are provided, for example, on a lateral surface 1092 of the housing of the first chamber. The lateral surface 1092 connects the front surface 1091 and the rear surface 1093 of the first chamber. Alternatively, according to an example not shown, one or more of the plurality of inlets 102 may be provided on the rear surface 1093. The first chamber 101 also includes a plurality of outlets 103 for distributing the first fluid f1 from the first chamber 101 toward one or more target surfaces 600. Specifically, the plurality of outlets 103 of the first chamber sequentially include a first outlet 103-1 and a second outlet 103-2 for distributing the first fluid f1 from the first chamber 101, for example, toward a first target surface 601 and a second target surface 602, respectively. As shown, the second target surface 602 may be different from the first target surface 601. In the example, multiple outlets 103 of the first chamber (e.g., first outlet 103-1 and second outlet 103-2) are provided on the front surface 1091 of the housing.

[0082] The cleaning system is equipped with a first panel 104, which is at least partially arranged within at least the first chamber 101 (see...). Figure 3 , Figure 4 , Figure 5Aand Figure 5B The first plate 104 includes a first through hole 105. The first through hole 105 may further include multiple through openings 105A, 105B, and 105C, as explained below.

[0083] The second chamber 201 is adapted to receive a second fluid f2. The second fluid f2 is a compressed gas, such as compressed air. The second chamber 201 includes an inlet 202 for supplying the second fluid f2 into the second chamber 201. As shown, for example, a plurality of inlets 202 of the second chamber 201 are provided on a side surface 2092 of the housing of the second chamber 201. The side surface 2092 connects the front surface 2091 and the rear surface of the second chamber 201. The second chamber 201 also includes a first outlet 203-1 and a second outlet 203-2 for distributing the second fluid f2 from the second chamber 201, for example, toward different target surfaces 601, 602 respectively. In the example, a plurality of outlets 203 of the second chamber (e.g., the first outlet 203-1 and the second outlet 203-2 of the second chamber) are provided on the front surface 2091 of the second chamber.

[0084] Figure 1 The diagram shows a first target surface 601 in fluid connection with a first outlet 103-1 of a first chamber and a first outlet 203-1 of a second chamber. Furthermore, a second target surface 602 is in fluid connection with a second outlet 103-2 of the first chamber and a second outlet 203-2 of the second chamber.

[0085] according to Figure 1 For example, the cleaning system is provided with a second panel 204 that is at least partially arranged within at least the second chamber 201 (see Figure 5A The second plate 204 further includes a second through hole 205. The second through hole 205 may include multiple through openings 205A, 205B, and 205C, as explained further below.

[0086] The operating device 300 includes a first motor 311 or a first actuator and a second motor 312 or a second actuator. Furthermore, the operating device 300 is connected to the first plate 104 and the second plate 204. Specifically, the operating device 300 includes a first drive device 321 adapted to move the first plate 104 (see [link to relevant documentation]). Figure 5A and Figure 5B The first drive unit 321 includes a shaft or alternatively a gear system (not shown) or a drive belt (not shown). More specifically, the operating device 300 includes a second drive unit 322 adapted to move the second plate 204 (see [link to relevant documentation]). Figure 5A The second drive unit 322 includes a shaft or alternatively a gear system (not shown) or a drive belt (not shown).

[0087] Figure 1Two fluid distribution selectors connected to a control unit (ECU) are shown, such as a first distribution selector and a second distribution selector. The first distribution selector includes a first motor 311, a first chamber 101, and a first plate 104. Further, the second distribution selector includes a second motor 312, a second chamber 201, and a second plate 204.

[0088] Figure 1 The cleaning system also includes a first fluid pressure generator 710 configured to supply a first fluid f1 to the first chamber 101 at least through an inlet 102 of the first chamber. Furthermore, the first fluid pressure generator 710 is fluidly connected to a fluid source 701, such as a tank. The cleaning system also includes a second fluid pressure generator 720 configured to supply a second fluid f2 to the second chamber 201 at least through an inlet 202 of the second chamber. The second fluid pressure generator 720 may be fluidly connected to a second fluid source (not shown). In this example, the second fluid source may be the external environment of the vehicle.

[0089] Figure 1 The cleaning system schematically includes a fluid distributor 500 configured to spray fluid onto one or more target surfaces 600. As shown, the fluid distributor 500 associated with a first target surface 601 is a first fluid distributor 501. Furthermore, the fluid distributor 500 associated with a second target surface 602 is a second fluid distributor 502. Additionally, the cleaning system includes supply lines, such as pipes, conduits, or hoses, for connecting the outlet fluid of a chamber to the fluid distributor 500. Specifically, a conduit fluidly connects the first outlet 103-1 of the first chamber and the first fluid distributor 501 to each other. Similarly, a conduit fluidly connects the first outlet 203-1 of the second chamber and the first fluid distributor 501 to each other. More specifically, a conduit fluidly connects the second outlet 103-2 of the first chamber and the second fluid distributor 502 to each other. And, a conduit fluidly connects the second outlet 203-2 of the second chamber and the second fluid distributor 502 to each other.

[0090] Figure 2A A fluid distributor 500 is schematically shown, which is supplied with a first fluid f1 and a second fluid f2 and is adapted to spray the first fluid f1 and the second fluid f2 onto one or more target surfaces 600 through the same orifice. Specifically, the first fluid f1 and the second fluid f2 are not mixed when supplied to the fluid distributor 500. Specifically, the fluid distributor 500 is a mixing nozzle. The mixing nozzle is particularly adapted to mix the first fluid f1 and the second fluid f2 therein and spray the mixed fluid onto one or more target surfaces 600 (e.g., a first target surface 601 and / or a second target surface 602).

[0091] Figure 2BA fluid distributor 500 is schematically shown, which is supplied with a first fluid f1 and a second fluid f2 and is adapted to spray the first fluid f1 and the second fluid f2 onto one or more target surfaces 600 through the same orifice. Specifically, a supply line receives a mixture of the first fluid f1 and the second fluid f2. The supply line supplies the mixed fluid to the fluid distributor 500. Thus, the fluid distributor 500 is adapted to receive the mixed fluid and spray it onto one or more target surfaces 600 (e.g., a first target surface 601 and / or a second target surface 602).

[0092] Figure 2C A fluid distributor 500 and an additional fluid distributor 500B are schematically shown. The fluid distributor 500 is supplied with a first fluid f1 and sprays the first fluid f1 onto one or more target surfaces 600. Furthermore, the additional fluid distributor 500B is supplied with a second fluid f2 and sprays the second fluid f2 onto one or more target surfaces 600. The one or more target surfaces 600 may be a first target surface 601 and / or a second target surface 602.

[0093] Figure 3 and Figure 4 A first motor 311 is shown directly connected to a first drive unit 321, which is a shaft member. A first chamber 101 includes a housing 109 defining an internal space 110. A plurality of inlets 102 are arranged on the side surfaces 1092 of the housing. The outer surfaces are curved. A first plate 104 (which includes a first through-hole 105) is arranged in the internal space 110 of the first chamber. As shown, a first auxiliary plate 104' is further disposed in the internal space 110 of the first chamber. Specifically, the first plate 104 and the first auxiliary plate 104' are discs or include a disc shape. In operation, the first plate 104 moves relative to the auxiliary plate 104', which can be fixed to, for example, the inner surface of the front surface 1091 of the housing. Specifically, the first plate 104 rotates about a rotation axis AXR. Furthermore, the rear surface 1093 includes a hole 1094. The first drive unit 321 is arranged to pass through said hole 1094.

[0094] Figure 5AAn operating device 300 is shown, which includes a drive mechanism and a motor or actuator. The motor may be an electric motor. The motor or actuator may be adapted to drive the operating device 300 to move the first plate 104 and / or the second plate 204 as needed. When the second chamber 201 is provided, the drive mechanism further includes a first drive mechanism 321 and a second drive mechanism 322. As described above, the first plate 104 moves relative to the housing 109 or relative to the first fluid outlet 103-1. Specifically, when the first auxiliary plate 104' is provided, the first plate 104 moves relative to the housing 109 and the first auxiliary plate 104'. When the second plate 204 is provided, the second plate 204 moves relative to one or more outlets 203 of the second chamber. More specifically, when the second auxiliary plate is provided, the second plate 204 moves relative to the housing of the second chamber and the second auxiliary plate.

[0095] Figure 5A An operating device 300 is shown, at least partially arranged in a first chamber 101. For example, a first drive device 321 is shown as a shaft configured to rotate, thereby rotating a first plate 104. In this case, the first drive device 321 is partially arranged in and partially outside the first chamber 101 (not shown). The drive device (e.g., the first drive device 321) includes a first end and a second end. The first end is arranged outside the housing 109 of the first chamber, and the second end is arranged inside the housing 109. Furthermore, the first end may be connected to a motor 311 or an actuator, and the second end is fixed to at least one of the first auxiliary plate 104' and the housing 109, for example, fixed to part 111. The drive device (e.g., the first drive device 321) may be part of or attached to the first plate 104. Figure 5A For example, the first drive unit 321 is arranged substantially parallel to the flow channel 108. These features of the first drive unit 321 can also be similarly applied to... Figure 5A The second drive unit 322 is schematically shown in the diagram.

[0096] In other examples not shown, the operating device 300 may be completely disposed outside the first chamber 104. For example, the operating device 300 may include a gear drive mechanism, such as a sprocket and belt, or a toothed wheel and belt, wherein the wheel and belt may be disposed outside the first chamber 101, and the first plate 104 may be partially disposed outside the first chamber 101 (see [link to relevant documentation]). Figure 9A first side of the belt may be arranged around a first plate 104, and a second side of the belt may be arranged around a toothed wheel, such that in operation, the first plate 104 rotates as the wheel rotates. In some examples not shown, a gear drive mechanism may be arranged inside the first chamber 101. To avoid corrosion due to contact between the fluid and the gear drive mechanism, it is preferable to arrange the gear drive mechanism outside the first chamber 101. The gear drive mechanism may engage the first plate 104. As the fluid flows out of the chamber, the gear drive mechanism may extend in a direction perpendicular to the fluid, for example, perpendicular to the flow channel 108. The gear drive mechanism may be configured to rotate about a rotation axis, which may be arranged substantially parallel to the fluid, for example, parallel to the flow channel 108, as the fluid flows out of the first internal space.

[0097] Figure 5B A schematic side view of an example cleaning system is shown, comprising a fluid distribution selector 100 having a first chamber 101 and a second chamber 201. The second chamber 201 is shown as being included within the first chamber 101, and both chambers 101 and 201 can take any shape. Figure 5B In this context, the second chamber 201 is represented as having a smaller volume than the first chamber 101, but other examples are possible. As shown, the fluid distribution selector 100 includes a sealing member 109' located inside the housing 109, which divides the internal space 110 into two compartments, thereby providing a watertight first chamber 101 isolated from the second (internal) chamber 201. The first chamber 101 and the second chamber 201 are independent fluid chambers. Operations explained elsewhere can be applied to... Figure 5B This is an example.

[0098] Figure 6 A rear view of an example of a first plate 104 (left) and a portion 111 (right) of the front housing 1091 of the first chamber is shown. The portion 111 may also correspond to a first additional plate 104'. The first plate 104 is a disc. It is adapted to rotate about an axis of rotation AXR. In other words, the operating device 300 causes rotational movement of the first plate 104 on the axis of rotation AXR. In this way, the first fluid f1 is distributed radially circumferentially toward one or more target surfaces 600 relative to the axis of rotation AXR. The portion 111 also includes a disc shape. The diameter of the portion 111 is substantially equal to or slightly larger than the diameter of the first plate 104. The axis of rotation AXR is arranged to pass through the center of the first plate 104 and the center of the portion 111. The portion 111 includes a first outlet 103-1, a second outlet 103-2, a third outlet 103-3, and additional outlets arranged at an angle to each other relative to the axis of rotation AXR. Figure 6As shown, the first outlet 103-1 is located at the first position P1, the second outlet 103-2 is located at the second position P2, and the third outlet 103-3 is located at the third position P3.

[0099] As shown in the figure, one or more of the first outlet 103-1, the second outlet 103-2, the third outlet 103-3, and other outlets further include multiple fluid outlets. For example, the first outlet 103-1 includes a set of fluid outlets 103-1A, 103-1B, and 103-1C. Specifically, the set of fluid outlets of the first outlet 103-1 includes the first fluid outlet 103-1A, the second fluid outlet 103-1B, and the third fluid outlet 103-1C. As shown, the third fluid outlet 103-1C is closer to the center than the second fluid outlet 103-1B, for example, the axis of rotation AXR. Furthermore, the second fluid outlet 103-1B is closer to the center than the first fluid outlet 103-1A. In other words, the first fluid outlet 103-1A is arranged further away from the center than the second fluid outlet 103-1B. Furthermore, the second fluid outlet 103-1B is arranged further away from the center than the third fluid outlet 103-1C. Specifically, each set of fluid outlets can be arranged in a straight line along the radial axis, although this is not mandatory (see [link]). Figure 8 ).

[0100] Specifically, Figure 6 A set of fluid outlets 103-1A, 103-1B, and 103-1C of the first outlet 103-1 is shown, arranged along a first radial axis of portion 111, also referred to as the first (angular) position P1. A set of fluid outlets 103-2A and 103-2B of the second outlet 103-2 is arranged along a second radial axis, also referred to as the second (angular) position P2. Furthermore, a set of fluid outlets 103-3A and 103-3B of the third outlet 103-3 is arranged along a third radial axis, also referred to as the third (angular) position P3.

[0101] In use, the control unit ECU is configured to control the operating device 300 according to a cleaning command to move the first plate 104, or, in the case of a disc plate, to rotate the first plate 104 until at least one of one or more through openings 105A, 105B, 105C of the first through hole 105 arranged in the first plate 104 is in at least partial fluid communication with one or more fluid outlets 103-1A, 103-1B, 103-1C of the first outlet 103-1, thereby defining a flow channel for the first fluid f1 to flow out from the first chamber 101 toward the first target surface 601 and / or the second target surface 602 as needed.

[0102] In use, the first through-hole 105 is simultaneously in fluid communication with two or more fluid outlets 103-1A, 103-1B, 103-1C of the first outlet 103-1 according to a cleaning command (e.g., a first cleaning command). Similarly, the first through-hole 105 can simultaneously be in fluid communication with two or more fluid outlets 103-2A, 103-2B of the second outlet 103-2 according to another cleaning command (e.g., a second cleaning command). In any case, each fluid outlet provides a flow path when each fluid outlet is at least partially aligned with the first through-hole 105. Therefore, when the first outlet 103-1 includes two or more fluid outlets 103-1A, 103-1B, 103-1C, the first outlet 103-1 provides two or more flow paths. Furthermore, each fluid outlet can be fluidly connected to different target surfaces 601, 602. This allows the cleaning system to simultaneously clean two or more target surfaces 601, 602 for the same (corner) positions P1, P2, P3. In other words, as Figure 7A As shown, three flow channels are provided for the first (corner) position P1 by aligning the through opening 105A and the first fluid outlet 103-1A, aligning the through opening 105B and the second fluid outlet 103-1B, and aligning the through opening 105C and the third fluid outlet 103-1C. Similarly, two flow channels (not shown) are provided for the second (corner) position P2 by aligning the through opening 105A and the first fluid outlet 103-2A, and aligning the through opening 105B and the second fluid outlet 103-2B, respectively. Figure 6 In the example, since each fluid outlet 103-1A, 103-1B, 103-1C is substantially aligned with the corresponding through openings 105A, 105B, 105C, the first (corner) position of plate 104 provides a first fluid communication 108-1, thereby creating two or more flow channels. Within the meaning of this disclosure, the first (corner) position of plate 104 refers to the plate's axis AX1 being arranged to coincide with or ultimately parallel to the first (corner) position P1 of housing 109. The plate's axis AX1 extends from the center of plate 104 to the first through opening 105; specifically, the plate's axis AX1 passes through the center of the plate and the center of the through openings 105A, 105B, 105C.

[0103] In this example, by moving or rotating the first plate 104, the first plate 104 can be positioned at a second (angular) position P2 (not shown) spaced 45 degrees from the first (angular) position P1. Therefore, since the through opening 105A is substantially aligned with the first fluid outlet 103-2A of the second outlet 103-2, and the through opening 105B is also substantially aligned with the second fluid outlet 103-2B of the second outlet 103-2, two flow channels are formed. Within the meaning of this disclosure, the second (angular) position of plate 104 refers to a position where the axis AX1 of the plate is arranged to coincide with or ultimately parallel to the second (angular) position P2 of the housing 109.

[0104] Alternatively, by moving or rotating plate 104, the first plate 104 can be positioned at a third (angular) position P3 (not shown) spaced 90 degrees from the first position P1. Therefore, since the through-hole 105A is substantially aligned with the first fluid outlet 103-3A of the third outlet 103-3, and the through opening 105B is also substantially aligned with the second fluid outlet 103-3B of the third outlet 103-3, two flow channels can be formed. Within the meaning of this disclosure, the third (angular) position of plate 104 refers to a position where the axis AX1 of the plate is arranged to coincide with or ultimately parallel to the third (angular) position P3 of the housing 109. These features of the first plate 104 can also be similarly applied to the second plate 204.

[0105] Figure 6 A first plate 104 is shown; specifically, the first plate 104 is a disc-shaped plate having a diameter ranging from 60 mm to 100 mm, or, for example, 85 mm as shown. The through openings 105A, 105B, 105C of the first through hole are circular or elliptical (see Figure 105B). Figure 8 However, other shapes are not excluded. The maximum size of the through openings 105A, 105B, and 105C can be 15 square millimeters. Other sizes can be provided to allow the first fluid f1 to flow through the through openings 105A, 105B, and 105C as needed. The set of fluid outlets can be shaped in any form that allows fluid to flow to the outside of the first chamber 101 when the through openings 105A, 105B, and 105C are at least partially in fluid communication with the fluid outlets. These features of the first plate 104 can also be similarly applied to the second plate 204.

[0106] Figure 7BThe diagram shows a first plate 104, a movable disc-shaped plate arranged on a portion 111 of the housing. The first plate 104 is adapted to be rotated or moved such that the through openings 105A, 105B, 105C are not in fluid communication with any fluid outlet. In such an example, if there is no target surface to be cleaned, the first disc 104 is, for example, in position NCP between a first position P1 and an eighth position P8, which is referred to as the non-cleaning position. In any case, in the non-cleaning position NCP, no fluid communication is provided; for example, there is no alignment between the through-hole and the outlet. As further described below, in the non-cleaning position NCP, the first control valve 41 does not allow any fluid to flow through any inlet 102.

[0107] For example, when it is detected that cleaning of a first target surface 601 is required (e.g., the lens of a vehicle front camera module, which may be associated, for example, with one or more fluid distributors fluidly connected to a first position P1 (at 0 degrees)), the control unit ECU receives or generates a first cleaning command. Based on the first cleaning command, the control unit ECU generates instructions to the operating device 300 to move or rotate the first plate 104 to the first position P1 (zero degrees) (see...). Figure 7A Furthermore, the control unit ECU sends a signal to the first pressure generator (e.g., one or two or more pumps) to activate it, thereby supplying the first fluid to the first chamber 101. Additionally, the control unit ECU sends a signal, such as an electrical signal, to the first control valve 41 to allow the first fluid to enter the first chamber 101. Once the first target surface 601 is cleaned and / or dried, i.e., free from any optical obstructions, the control unit ECU generates a command to the operating device 300 to rotate the first plate 104 or return the first plate 104 to its initial or non-cleaned position (NCP). The control unit ECU sends a signal to the first pressure generator to stop it from operating, thereby preventing the supply of the first fluid to the first chamber 101. Furthermore, the control unit ECU sends a signal, such as an electrical signal, to the first control valve 41 to prevent the first fluid from entering the first chamber 101.

[0108] For example, when a need to clean a second target surface 602 (e.g., the outer surface of a LIDAR sensor, which may be associated, for example, with one or more fluid dispensers 500 fluidly connected to the outlet of a second position P2 (at 45 degrees)) is detected, the control unit ECU receives or generates a second cleaning command. Based on the second cleaning command, the control unit ECU generates an instruction to the operating device 300 to move or rotate the first plate 104 to the second position P2 (45 degrees). Furthermore, the control unit ECU sends a signal to a first pressure generator to activate it, thereby supplying a first fluid to the first chamber 101. Additionally, the control unit ECU sends a signal, such as an electrical signal, to a first control valve 41 to allow the first fluid to enter the first chamber 101. Once the second target surface 602 is cleaned and / or dried, i.e., free of any optical obstructions, the control unit ECU generates an instruction to the operating device 300 to rotate the first plate 104 or return the first plate 104 to its initial or non-cleaned position NCP.

[0109] For example, when a need to clean a third target surface is detected (e.g., the lens of a camera module in a side digital reflector system, which may be associated, for example, with one or more fluid distributors fluidly connected to the outlet of a third position P3 (e.g., +90 degrees), the control unit ECU receives or generates a third cleaning command. Based on the third cleaning command, the control unit ECU generates instructions to the operating device 300 to move or rotate the first plate 104 to the third position P3 (90 degrees).

[0110] Furthermore, the control unit ECU sends an electrical signal to the first control valve 41, allowing the first fluid to pass only when the first plate 104 has passed the second position P2. Advantageously, no fluid leakage occurs during the brief moment when the through openings 105A, 105B, 105C of the first hole 105 are aligned with the fluid outlets 103-2A, 103-2B of the housing of the first chamber in the second position. Advantageously, the first fluid is allowed to flow into the first chamber 101 only when the first plate 104 is in the third position P3 or 90°. For example, based on a position signal sent by a position sensor, the control unit ECU can move or stop moving in one direction or another (e.g., clockwise or counterclockwise). These features of the first plate 104 can also be similarly applied to the second plate 204.

[0111] In other examples not shown, the control unit ECU is configured to control the operating device 300 in at least two (linear) directions: a first direction in which the first through-hole 105 is in partial fluid communication with the first outlet 103-1 and the second outlet 103-2 of the first chamber; and a second direction in which displacement allows movement in the first direction to disallow fluid communication between the first through-hole 105 and the first outlet 103-1 and the second outlet 103-2 of the first chamber. For example, the operating device 300 may allow vertical and horizontal movement such that the first through-hole 105 can be vertically displaced such that the first through-hole 105 is ultimately in a vertical position above or below the positions of the first outlet 103-1 and the second outlet 103-2 of the first chamber, and then horizontal movement can be made such that once a selected outlet is below or above a corresponding through opening, further vertical movement allows fluid communication between the selected outlet and the corresponding through opening 105A, 105B, 105C at the selected position.

[0112] like Figure 1 As schematically illustrated, the control unit ECU is configured to detect or receive instructions that a target surface is dirty, has optical contaminants, or needs to be cleaned. For example, if a first target surface 601 has optical contaminants, the control unit ECU detects that the first target surface 601 needs to be cleaned. If so, the control unit ECU generates a first cleaning command. Furthermore, if a second target surface 602 has optical contaminants, the control unit ECU detects that the second target surface 602 needs to be cleaned. If so, the control unit ECU generates a second cleaning command. Furthermore, if a third target surface has optical contaminants, the control unit ECU detects that the third target surface needs to be cleaned. If so, the control unit ECU generates a third cleaning command. The purpose of this cleaning system is to remove optical contaminants from one, two, or more target surfaces 600.

[0113] The control unit ECU includes a memory for storing which outlets 103-1, 103-2, 203-1, 203-2 correspond to fluid dispensers 501, 502 associated with the target surfaces 601, 602 to be cleaned. Therefore, according to a cleaning command, the control unit ECU is configured to select one or more outlets from outlets 103-1, 103-2, 203-1, 203-2. For example, according to... Figure 1In a non-limiting example, if the first target surface 601 needs to be cleaned, the control unit ECU is configured to select the first outlet 103-1 of the first chamber and optionally select the first outlet 203-1 of the second chamber. In this case, the first outlet 103-1 of the first chamber and the first outlet 203-1 of the second chamber are selected outlets chosen by the control unit ECU. Conversely, if the second target surface 602 needs to be cleaned, the control unit ECU is configured to select the second outlet 103-2 of the first chamber and optionally select the second outlet 203-2 of the second chamber. In this case, the second outlet 103-2 of the first chamber and the second outlet 203-2 of the second chamber are selected outlets chosen by the control unit ECU. As explained, the selected (fluid) outlet is included within one or more outlets 103.

[0114] The control unit ECU is configured to control the operating device 300 according to a first cleaning command to provide a first fluid communication 108-1, thereby discharging a first fluid f1 onto at least a first target surface 601. The first fluid communication 108-1 is provided when the first through-hole 105 and the first outlet 103-1 of the first chamber are at least in fluid communication with each other. As explained, the first target surface 601 is in fluid connection with the first outlet 103-1. Specifically, the control unit ECU is configured to operate a first motor 311 to operate a first drive device 321 adapted to move a first plate 104, thereby providing the first fluid communication 108-1 by positioning the first through-hole 105 and the first outlet 103-1 in at least fluid communication with each other on the plate 104. In other words, the first through-hole 105 is moved until it is at least partially in fluid communication with the first outlet 103-1, thereby at least defining a flow path for the first fluid f1 to flow from the first chamber 101 through the first outlet 103-1 toward the first target surface 601.

[0115] The control unit ECU is also configured to control the operating device 300 according to a first cleaning command to provide a second fluid communication 208-2, thereby discharging the second fluid f2 onto at least the first target surface 601. The second fluid communication 208-2 is provided when the second through-hole 205 and the first outlet 203-1 of the second chamber are at least in fluid communication with each other. The first target surface 601 is also in fluid communication with the first outlet 203-1 of the second chamber. In other words, the second through-hole 205 moves until it is at least partially in fluid communication with the first outlet 203-1 of the second chamber, thereby at least defining a flow path for the second fluid f2 to flow from the second chamber 201 through the first outlet 203-1 of the second chamber toward the first target surface 601.

[0116] The control unit ECU is also configured to control the operating device 300 according to a second cleaning command to provide a third fluid communication 208-1, thereby discharging the first fluid f1 onto at least the second target surface 602. The third fluid communication 208-3 is provided when the first through-hole 105 and the second outlet 103-2 of the first chamber are at least in fluid communication with each other. The first target surface 601 is also in fluid communication with the second outlet 103-2 of the first chamber. In other words, the first through-hole 105 moves until it is at least partially in fluid communication with the second outlet 103-2 of the first chamber, thereby at least defining a flow path for the first fluid f1 to flow from the first chamber 101 through the second outlet 103-2 of the first chamber toward the second target surface 602.

[0117] The control unit (ECU) is configured to control the cleaning system to spray a first fluid and / or a second fluid in a coordinated (continuous) and / or sequential manner.

[0118] According to the example, the second fluid connection 208-2 is provided at least at some point while the first fluid connection 108-1 is being provided. Therefore, the first fluid connection 108-1 and the second fluid connection 208-2 are provided at least simultaneously. This is advantageous in reducing the use of the first liquid (e.g., cleaning fluid). Furthermore, the second fluid is compressed air having a pressure at least two bar greater than the cleaning fluid, such that in use, the compressed air delivers a greater velocity to the cleaning fluid toward the first target surface 601 and / or the second target surface 602. Specifically, the cleaning fluid gains a greater velocity when the compressed air comes into contact with the cleaning fluid within the fluid distributor or with the cleaning fluid in the supply line between the outlet and the fluid distributor 500. In this way, one, two, or more target surfaces 600 are cleaned with improved efficiency.

[0119] According to the example, the fourth fluid connection 208-4 is provided at least at some point while the third fluid connection 108-3 is being provided. Therefore, the third fluid connection 108-3 and the fourth fluid connection 208-4 are provided at least simultaneously. The characteristics of the first fluid connection 108-1 and the second fluid connection 208-2 are similarly applied to the third fluid connection 108-3 and the fourth fluid connection 208-4.

[0120] like Figures 10A to 10CAs shown, the cleaning system jets fluid in alternating pulses. Specifically, a second fluid connection 208-2 (ON2 state) is provided at least at a certain moment within a predetermined time threshold after the first fluid connection 108-1 (OFF1 state) is blocked. In the example, the alternating pulses include interrupting the fluid flow, specifically interrupting the first fluid f1, for example, by blocking the first fluid connection 108-1 between the through-hole 105 of the first chamber and a selected outlet (such as the first outlet 103-1). The predetermined time threshold is the maximum time starting from the moment when the first fluid f1 is blocked from flowing out through the first outlet 103-1. Furthermore, the predetermined time threshold is pre-stored in the control unit ECU and has a duration of, for example, less than 0.5 seconds.

[0121] like Figure 10C As shown, the first fluid f1 is discontinuous, for example, it has been interrupted (OFF1 state), while the second fluid is continuous (ON2 state). Alternatively, as... Figure 10A and Figure 10B As shown, the first fluid f1 is discontinuous, for example, it has been interrupted (OFF1 state), and the second fluid f2 is also discontinuous, for example, it has been interrupted. In any case, during use, the second fluid f2 is injected at least at some point when the first fluid f1 is interrupted or stopped. Figure 10A In the example, the second fluid connection opens when the first fluid connection closes. Conversely, according to Figure 10B For example, the second fluid connection is opened before the first fluid connection is closed. In any case, as described above, the second fluid f2 is injected at least at some point when the first fluid f1 is interrupted or blocked.

[0122] Specifically, the cleaning cycle includes: Provide first fluid communication 108-1, ON1 state, to transfer 0.1 to 100cm 3 (Specifically, 0.1 to 10 cm) 3 The first fluid f1 is discharged onto at least the first target surface 601; Prevent the first fluid from connecting to 108-1, OFF1 state; Provide a second fluid connection 208-2, ON2 state, at least at some point within a predetermined time threshold after the first fluid connection 108-1 is blocked, to discharge the second fluid f2 onto at least the first target surface 601; and After providing the second fluid connection 208-2 for 0.1 to 2 seconds, the second fluid connection 208-2 is blocked, and the state is OFF2.

[0123] More specifically, the cleaning cycle also includes repeating the above steps at least N times within a predetermined repetition time threshold, where N is two or more times. The cleaning cycle for the first fluid f1 is: ON1-OFF1-ON1-OFF1. The second cleaning cycle for the second fluid f2 is: ON2-OFF2-ON2-OFF2. In this example, the control unit ECU is therefore configured to control the cleaning system to spray the first fluid f1 and the second fluid f2 with alternating pulses of ON1-OFF1-ON2-OFF2-ON1-OFF1-ON2-OFF2. Furthermore, the predetermined time threshold is shorter than the predetermined repetition time threshold. Additionally, the predetermined repetition time threshold has a duration of 0.1 to 2 seconds, providing a so-called "machine gun" concept.

[0124] The first fluid f1 comprises a cleaning fluid, and the second fluid f2 comprises a compressed gas. Furthermore, the pressure of the second fluid f2 is greater than the pressure of the first fluid. Specifically, the second fluid f2 has a pressure at least one bar (particularly two bar) greater than that of the first fluid f1, such that in use, the second fluid f2 provides a greater velocity to the first fluid f1 toward at least the first target surface 601 and / or the second target surface 602.

[0125] More specifically, the cleaning cycle also includes: Provides a third fluid connection 108-3, ON3 state, to transfer 0.1 to 100cm 3 (specifically 0.1 to 10 cm) 3 The first fluid f1 is discharged onto at least the second target surface 602; Prevent third fluid from connecting to 108-3, OFF3 state; A fourth fluid connection 208-4, ON4 state, is provided at least at a predetermined time threshold after the third fluid connection 108-3 is blocked, to discharge the second fluid f2 onto at least the second target surface 602: and After providing the fourth fluid connection 208-4 for 0.1 to 2 seconds, the fourth fluid connection 208-4 is blocked, and the OFF4 state is entered.

[0126] More preferably, the cleaning cycle also includes repeating the above steps at least N times within a predetermined repetition time threshold, where N is two or more times.

[0127] The two fluid distribution selectors described above operate by means of a method that may include: at least at a certain moment when the first fluid f1 or cleaning fluid is not being sprayed, spraying a second fluid f2, which is air, from the second chamber 201 through the first outlet 203-1 of the second chamber; or spraying air while spraying cleaning fluid. In either case, the second fluid f2 provides the first fluid f1 with a greater velocity toward one or more target surfaces 600, thereby providing a so-called "machine gun" concept.

[0128] like Figure 1 As shown, the cleaning system also includes a first control valve 41 in fluid communication with the first inlet 102. The control unit ECU is configured to operate the first control valve 41 such that, in operation, the first control valve 41 allows and / or prevents the flow of first fluid f1 into the first chamber 101. Specifically, the control unit ECU is also configured to operate the first control valve 41 such that, in use, it prevents the flow of first fluid f1 into the first chamber 101 during actuation of the operating device 300 until at least one through opening 105A, 105B, 105C of the first plate is at least partially in fluid communication with a selected fluid outlet, thereby preventing any flow path for the first fluid f1 through any of one or more outlets 103. In other words, the first control valve 41 is configured to prevent the first fluid 41 from being supplied to the first chamber 101 during actuation of at least the first plate 204 when the through-hole 105 is not in fluid communication with a selected outlet. A first control valve 41 is arranged between the first chamber 101 and the first fluid pressure generator 710, including being arranged in the first chamber 101, for example, in the first inlet 102, or in the first fluid pressure generator 710. Figure 1 In the non-limiting example shown, the first inlet 102 includes a first control valve 41. Optionally, the second inlet 202 includes a second control valve 42. The first control valve 41 and the second control valve 42 include solenoids. In this way, the first inlet 102 of the first chamber and the first inlet 202 of the second chamber are provided with solenoids for allowing or blocking the first fluid and the second fluid, respectively.

[0129] Specifically, the control unit ECU is also configured to operate the first control valve 41 such that, during operation, at least during the movement of the first plate 104, flow of the first fluid f1 into the first chamber 101 is prevented until at least the first through-hole 105 of the first plate is at least partially in fluid communication with at least one selected fluid outlet. This prevents any flow path for the first fluid f1 through any fluid outlet other than the at least one selected fluid outlet. As described above, the at least one selected fluid outlet is one or more of the fluid outlets. For example, the control unit ECU is configured to operate the first control valve 41 to prevent the first fluid f1 from entering the first chamber at least while the first plate 104 is moving to achieve alignment between the first through-hole 105 and the first fluid outlet 103-1. For example, if the control unit ECU receives or generates a second cleaning command for cleaning the second target surface 602, the control unit ECU is configured to operate the first control valve 41 to prevent the first fluid from entering the first chamber at least while the first plate 104 is moving to achieve alignment between the first through-hole 105 and the second outlet 103-2.

[0130] Figure 5A A schematic side view of an example cleaning system including a first fluid distribution selector 100 and a second fluid distribution selector 200 is shown. As shown, an operating device 300 is connected to at least a first plate 104 and a second plate 204. A control unit ECU is configured to control the operating device 300 according to a first cleaning command, for example, a first drive device 321, to move the first plate 104 at least relative to a first internal space 110 until at least one of one or more through holes 105 of the first plate is at least partially in fluid communication with a first fluid outlet 103A. The control unit ECU is configured to control the operating device 300 according to a first cleaning command, for example, a second drive device 322, to move the second plate 204 at least relative to a second internal space 210 until at least one of one or more through holes 205 of the second plate is at least partially in fluid communication with a second outlet 203A. In this manner, at least a first flow path 108A is defined for the first fluid f1 to flow from the first chamber 101 through at least a first fluid outlet 103A toward the first target surface 601, and at least a second flow path 208A is also defined for the second fluid f2 to flow from the second chamber 201 through at least a second outlet 203A toward the first target surface 601.

[0131] Still in Figure 5AIn this configuration, the control unit ECU is configured to operate the operating device 300, such as the first drive device 321, according to a second cleaning command, to move the first plate 104 at least relative to the internal space 110 until the through hole 105 of the first plate is at least partially in fluid communication with the third fluid outlet 103B, thereby defining at least a third flow channel 108B for the first fluid f1 to flow from the first chamber 101 through the third outlet 103B toward the second target surface 602. Furthermore, the control unit ECU is configured to operate the operating device 300, such as the second drive device 322, according to a second cleaning command, to move the second plate 204 at least relative to the second internal space 210 until the second through hole 205 is at least partially in fluid communication with the fourth outlet 203B, thereby defining at least a fourth flow channel 208B for the second fluid f2 to flow from the second chamber 201 through the fourth outlet 203B toward the second target surface 602.

[0132] Figure 8 The first drive unit 321 is shown as a shaft member attached to the front surface 1091 (e.g., portion 111) of the housing of the chamber. Furthermore, the through openings 105A, 105B, and 105C of the first through hole 105 are not aligned in a single vertical direction. Moreover, through opening 105A is further away from the axis of rotation AXR than through opening 105B. Furthermore, through opening 105B is further away from the axis of rotation AXR than through opening 105C. Additionally, the first fluid outlet 103-1A of the first outlet 103-1 is elliptical. In the example shown, through opening 105A is substantially aligned with the first fluid outlet 103-1A. Therefore, first fluid communication is provided.

[0133] Figure 9 An example is schematically shown in which the cleaning system includes two fluid distribution selectors 100 and 200, wherein a first plate 104 and a second plate 204 rotate synchronously. In other words, they move cooperatively. In this example, the operating device 300 includes a drive belt (dashed line) engaging with the first plate 104 and the second plate 204. As shown, the drive belt is arranged around a portion of the first plate 104 and a portion of the second plate 204. In use, when the first plate 104 rotates, the second plate 204 rotates at the same angular velocity. For example, when fluid flows out of the first chamber 101 and the second chamber 102, the drive belt extends in a direction perpendicular to the fluid, for example, this direction is contained in a plane perpendicular to the arrangement of the first fluid communication 108-1 and the second fluid communication 208-2.

[0134] A first fluid distribution selector 100 provides a first connection 108-1, while a second distribution selector 200 blocks a second fluid connection 208-2. As shown, through openings 105A, 105B, and 105C are substantially aligned with fluid outlets 103-1A, 103-1B, and 103-1C, respectively, wherein through openings 205A, 205B, and 205C of the second through hole 205 are not aligned with fluid outlets 203-1A, 203-1B, and 203-1C of the first outlet 203-1 of the second chamber 201. Furthermore, the control unit ECU causes a (single) motor or actuator to move a drive belt so that both the first plate 104 and the second plate 204 rotate in unison (e.g., at the same angular velocity), such that the second fluid distribution selector 200 provides the second connection 208-2, while the first distribution selector 100 blocks the first fluid connection 108-1 (not shown). In other words, the through openings 205A, 205B, and 205C are substantially aligned with the fluid outlets 203-1A, 203-1B, and 203-1C, respectively, while the through openings 105A, 105B, and 105C of the first through hole 105 are not aligned with the fluid outlets 103-1A, 103-1B, and 103-1C (not shown). Therefore, the first target surface 601 or the second target surface 602 is supplied with a first fluid f1 and a second fluid f2, which are alternately pulsed by repeatedly moving a transmission belt in one and opposite directions. In this implementation, the so-called "machine gun" concept can be easily realized.

[0135] The control unit ECU is also configured to synchronously operate a first fluid pressure generator and a second fluid pressure generator to supply the first fluid and the second fluid to the first chamber 101 and the second chamber 201. Furthermore, as described above, the control unit ECU is configured to operate at least a first control valve 41 and / or a second control valve 42, as well as the first fluid pressure generator and / or the second fluid pressure generator, to supply the first fluid and / or the second fluid to at least a first target surface 601 and / or a second target surface 602 according to a first cleaning command and / or a second cleaning command.

[0136] In the example, the control unit (ECU) can operate synchronously with two fluids (e.g., a first fluid f1 and a second fluid f2). In the example, the first fluid f1 (e.g., a cleaning fluid) is used for cleaning, and then the second fluid f2 (e.g., compressed gas) is used at least for drying. In the example, both the cleaning fluid and the compressed gas are used simultaneously. It is permissible for both compressed air and cleaning fluid to flow toward a single fluid distributor, or they can flow toward different fluid distributors, for example, one nozzle for water and one nozzle for air.

[0137] In the example, cleaning fluid can be sprayed and compressed gas can be sprayed simultaneously, allowing the compressed gas to impart output velocity to the cleaning fluid. This reduces cleaning fluid consumption and improves cleaning efficiency. For example, the cleaning fluid pressure may not reach the desired pressure, and compressed air can help increase the pressure, thereby providing the outlet velocity. In this case, a single nozzle can be used to allow the flow of both mixed fluids.

[0138] The control unit ECU is also configured to synchronously operate the operating devices 300, namely the first fluid pressure generator 710 and the second fluid pressure generator 720, to provide the second fluid connection 208-2 at least at a certain moment within a predetermined time threshold after the (first) fluid connection 108-1 is blocked. As explained, the pressure of the first fluid f1 is lower than that of the second fluid f2, such that in use, the second fluid provides a greater velocity toward the target surface to the first fluid f1.

[0139] Although only a few examples are disclosed herein, other substitutions, modifications, uses, and / or equivalents of these examples are possible. Furthermore, all possible combinations of the examples are covered. Therefore, the scope of this disclosure should not be limited by the examples but should be determined solely through a reasonable reading of the appended claims.

Claims

1. A cleaning system comprising: - Chamber (101), the chamber comprising: one or more inlets (102) for supplying fluid (f1) into the chamber (101); and one or more outlets (103) for dispensing the fluid (f1) from the chamber (101) toward one or more target surfaces (600) to be cleaned; - A plate (104) including a through hole (105) configured to allow the fluid (f1) to pass through the through hole, wherein the plate (104) is at least partially disposed inside the chamber (101); - An operating device (300), which is at least connected to the plate (104); and - A control unit (ECU) configured to control the operating device (300) to move the plate (104) according to a cleaning command in order to provide a fluid communication (108-1) for discharging the fluid (f1) onto one or more target surfaces (600), wherein the fluid communication (108-1) is provided at least when the through-hole (105) and the outlet (103-1) of the chamber are in fluid communication with each other, thereby defining at least a flow channel for the fluid (f1) to flow from the chamber (101) through the outlet (103-1) toward at least the target surface (601), and wherein the target surface (601) is in fluid connection with the outlet (103-1) of the chamber.

2. The cleaning system according to claim 1, wherein, The cleaning system further includes a second chamber (201) comprising: one or more inlets (202) for supplying a second fluid (f2) into the second chamber (201); and one or more outlets (203) for dispensing the second fluid (f2) from the second chamber (201) toward one or more target surfaces (600) to be cleaned; and The control unit (ECU) is further configured to control the cleaning system to provide a second fluid connection (208-2) for discharging the second fluid (f2) through the outlet (203-1) of the second chamber onto at least the target surface (601), wherein the target surface (601) is in fluid connection with the outlet (203-1) of the second chamber.

3. The cleaning system according to claim 2, wherein, The cleaning system further includes a second through-hole (205) configured to allow the second fluid (f2) to pass through the second through-hole, and the second through-hole is at least partially disposed inside the second chamber (201), wherein the second through-hole (205) is also disposed in the plate (104) or in the second plate (204) connected to the operating device (300); The control unit (ECU) is further configured to control the operating device (300) to move the plate (104) or the second plate (204) to provide a second fluid communication (208-2) at least when the second through hole (205) and the outlet (203-1) of the second chamber are in fluid communication with each other, thereby defining at least a flow channel for the second fluid (f2) to flow from the second chamber (201) through the outlet (203-1) of the second chamber toward at least the target surface (601), wherein the target surface (601) is in fluid connection with the outlet (203-1) of the second chamber.

4. The cleaning system according to claims 2 to 3, wherein, Provide the second fluid connection (208-2) at least at some point within a predetermined time threshold after the fluid connection (108-1) is blocked; or The second fluid connection (208-2) is provided at least at some point when the fluid connection (108-1) is provided.

5. The cleaning system according to claims 2 to 4, wherein, The control unit (ECU) is also configured to control the cleaning system according to the cleaning command to discharge the fluid (f1) and / or the second fluid (f2) using a cleaning cycle including alternating pulses.

6. The cleaning system according to claim 5, wherein, The cleaning cycle includes: The fluid communication (108-1) is provided to discharge the fluid (f1) onto at least the target surface (601); and Prevent the fluid communication (108-1). The cleaning cycle further includes repeating the above steps at least N times within a predetermined repetition time threshold, where N is two or more times.

7. The cleaning system according to claim 6, wherein, The cleaning cycle also includes: The second fluid connection (208-2) is provided at least at a certain time after the fluid connection (108-1) is blocked in order to discharge the second fluid (f2) onto at least the target surface (601), the second fluid connection (208-2) being provided within a predetermined time threshold; and Optionally, the second fluid communication (208-2) is blocked, preferably by moving the second through-hole (205) so that, in use, the second through-hole (205) and the outlet (203-1) of the second chamber are not in fluid communication with each other. The cleaning cycle further includes repeating the above steps at least N times within a predetermined repetition time threshold, where N is two or more times.

8. The cleaning system according to claims 2 to 7, wherein, The fluid (f1) includes a cleaning fluid, and the second fluid (f2) includes compressed gas; Wherein, the pressure of the second fluid (f2) is greater than the pressure of the fluid (f1), preferably at least two bar greater; In use, the second fluid (f2) provides the fluid (f1) with a greater velocity toward at least the target surface (601).

9. The cleaning system according to any one of the preceding claims, wherein, The cleaning system also includes a fluid distributor supplied with the first fluid (f1) and the second fluid (f2), and configured to spray the first fluid (f1) and the second fluid (f2) onto at least the target surface (601) through the same orifice.

10. The cleaning system according to any one of the preceding claims, wherein, The one or more outlets (103) of the chamber include a second outlet (103-2) at least in fluid connection with the second target surface (602), wherein the one or more outlets (203) of the second chamber include a second outlet (203-2) at least in fluid connection with the second target surface (602), and wherein the control unit (ECU) is configured to, according to a second cleaning command: The operating device (300) is controlled to provide a third fluid communication (108-3) to discharge the fluid (f1) onto at least the second target surface (602), wherein the third fluid communication (108-3) is provided when the through-hole (105) and the second outlet (103-2) of the chamber are in fluid communication with each other, thereby at least defining a flow channel for the fluid (f1) to flow from the chamber (101) through the second outlet (103-2) of the chamber toward at least the second target surface (602); and A fourth fluid communication (208-4) is provided to discharge the second fluid (f2) onto at least the second target surface (602).

11. The cleaning system according to claim 10, wherein, The control unit (ECU) is also configured to control the operating device (300) to provide the fourth fluid communication (208-4), wherein the fourth fluid communication (208-4) is provided when the second through hole (205) and the second outlet (203-2) of the second chamber are in fluid communication with each other, thereby defining at least a flow channel for the second fluid (f2) to flow from the second chamber (201) through the second outlet (203-2) of the second chamber toward at least the second target surface (602).

12. The cleaning system according to any one of the preceding claims, wherein, The control unit (ECU) is also configured to control the operating device (300) to move the plate (104) when the fluid (f1) is not entering the chamber (101).

13. The cleaning system according to any one of the preceding claims, wherein, The cleaning system also includes a control valve (41) arranged in fluid connection with one or more inlets (102) of the chamber, wherein the control unit (ECU) is configured to operate the control valve (41) such that, in operation, the control valve (41) allows and / or prevents fluid (f1) from flowing into the chamber (101).

14. The cleaning system according to any one of the preceding claims, wherein, The first outlet (103-1) of the chamber includes a set of fluid outlets (103-1A, 103-1B, 103-1C) such that, in use, the through hole (105) is in fluid communication with two or more of the fluid outlets (103-1A, 103-1B, 103-1C) of the first outlet, thereby defining at least two or more flow channels for the fluid (f1) to flow out of the chamber (101) to simultaneously clean at least two or more target surfaces, which are in fluid connection with the two or more fluid outlets (103-1A, 103-1B, 103-1C).

15. A method for operating a cleaning system, the method comprising: - The cleaning command is generated or received by the control unit (ECU); - Preferably, the fluid pressure generator is operated to supply fluid (f1) to the chamber (101); - Preferably, the fluid (f1) is prevented from entering the interior space (110) of the chamber. - By moving a plate (104) arranged in the interior space (110) and including a through hole (105), a first fluid communication (108-1) is provided between the through hole (105) and the first outlet (103-1) of the chamber. - Preferably, the fluid (f1) is allowed to enter the interior space of the chamber (101); - The fluid (f1) is discharged at least onto the target surface (601) to be cleaned, the target surface being in fluid connection with the first outlet (103-1); and - Preferably, after the fluid (f1) is discharged at least onto the target surface (601), the fluid (f1) is prevented from entering the interior space (110) of the chamber.

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