CN117962815A - A cleaning system and method thereof - Google Patents

Abstract

The present application discloses a cleaning system, which includes a pressure system, a liquid spraying part, and an air blowing part. The pressure system includes a container, a liquid reservoir, and a power device. The container has a receiving chamber, the liquid spraying port of the liquid spraying part can be communicated with the receiving chamber, the air jet port of the air blowing part can be communicated with the receiving chamber, and the receiving chamber can be communicated with the liquid storage chamber of the liquid reservoir; the cleaning system includes a first working state and a second working state. In the first working state, the power device injects the liquid in the liquid reservoir into the container filled with gas to compress the gas in the container; in the second working state, the liquid spraying port sprays liquid, and the air jet port sprays gas. The present application also discloses a cleaning method. The present application has the characteristics of reducing the use cost.

Description

A cleaning system and method thereof

[Technical field]

The present application relates to a driving assistance device, and more particularly to a cleaning system and method thereof.

【Background technique】

Automobile driving generally uses various auxiliary devices (such as radar, sensors, etc.) to perceive the external surrounding environment. External stains such as dust, ice and snow, mosquitoes, bird droppings, etc. will cause them to be polluted to varying degrees and seriously affect their normal operation. In order to better identify the external environment around the car body and make accurate identification, the surface of the auxiliary device needs to be cleaned. During the cleaning process, a compressed air tank or a separate air pump is generally used to provide high-pressure gas to blow away the moisture, but a larger space is required to accommodate the gas tank or air pump, and the cost of use is relatively high.

[Summary of the invention]

The purpose of the present application is to provide a cleaning system and method thereof, which are helpful to reduce the use cost.

To achieve the above purpose, one embodiment of the present application adopts the following technical solution:

A cleaning system, comprising a pressure system, a liquid spraying part, and an air blowing part. The pressure system comprises a container, a liquid reservoir and a power device. The container has a accommodating chamber. The liquid spraying port of the liquid spraying part can be connected to the accommodating chamber. The air jet port of the air blowing part can be connected to the accommodating chamber. The accommodating chamber can be connected to the liquid storage chamber of the liquid reservoir. The cleaning system comprises a first working state and a second working state. In the first working state, the power device injects the liquid in the liquid reservoir into the container filled with gas to compress the gas in the container. In the second working state, the liquid spraying port sprays liquid and the air jet sprays gas.

In the above technical solution, the accommodating chamber of the container is connected to the liquid reservoir of the liquid storage device, and the power device injects the liquid in the liquid reservoir into the container filled with gas. The gas in the container is compressed to form compressed gas, which reduces some components and saves accommodating space, thereby helping to reduce the cost of use.

【Brief Description of the Drawings】

FIG1 is a schematic diagram of the initial state of the cleaning system of the present application;

FIG2 is a schematic diagram of a cleaning system of the present application after liquid is injected into a container;

FIG3 is a schematic diagram of the cleaning system of the present application after cleaning is completed;

FIG4 is a schematic diagram of the cleaning system of the present application after the liquid in the container flows back to the liquid reservoir after the blowing is completed;

FIG. 5 is a flow chart of a cleaning method according to an embodiment of the present application.

Figure numerals: 1. container; 2. liquid reservoir; 3. power device; 4. nozzle; 41. liquid spray port; 42. air jet port; 5. control unit; 6. first control valve; 7. second control valve; 8. third control valve; 9. fourth control valve; 10. cleaning pipeline; 11. air blowing pipeline; 12. liquid inlet pipeline; 13. return pipeline; 14. pressure sensor; 15. liquid level sensor.

【Detailed ways】

The present application is further described below with reference to the accompanying drawings and specific embodiments:

In order to enable those skilled in the art to better understand the technical solution of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. The directional words such as upper and lower involved in this article are defined by the positions of the parts shown in the drawings relative to each other, just for the clarity and convenience of expressing the technical solution. It should be understood that the directional words used in this article should not limit the scope of protection requested by this application.

Figures 1 to 4 are schematic diagrams of the cleaning system of the present application at different stages. Please refer to Figures 1 to 4. The cleaning system of the present application can be used for cleaning surfaces such as sensors, cameras, radars and windshields, but is not limited thereto. The cleaning system includes a pressure system, a liquid spraying unit, an air blowing unit and a control unit 5. The pressure system includes a container 1, a liquid reservoir 2, and a power device 3. The liquid reservoir 2 contains a liquid for cleaning, such as water or a detergent, etc. The power device 3 can provide power for the transportation of the liquid in the liquid reservoir 2, so that a part of the liquid in the liquid reservoir 2 flows into the container 1. The power device 3 can be a water pump or other device that can provide power. The power device 3 is turned on in response to the start signal sent by the control unit 5, or the power device 3 is turned off in response to the shutdown signal sent by the control unit 5. The container 1 has a accommodating chamber, the liquid spraying port 41 of the liquid spraying part can be connected to the accommodating chamber, the air jet 42 of the air blowing part can be connected to the accommodating chamber, and the accommodating chamber can be connected to the liquid storage chamber of the liquid reservoir 2; the cleaning system includes a first working state and a second working state, in the first working state, the power device 3 injects the liquid in the liquid reservoir 2 into the container 1 filled with gas to compress the gas in the container 1, in the second working state, the liquid spraying port 41 sprays liquid, and the air jet 42 sprays gas. The present application can obtain high-pressure gas without configuring a compressed gas tank or an air pump, saving accommodating space, and the component configuration is simple, which is conducive to reducing the use cost. At the same time, the compressed gas in the container 1 can compress the liquid in the container 1, and the compressed liquid is used to clean the surface, the flushing pressure is relatively high, and under the action of high pressure, the liquid can quickly break up the dirt on the surface, and the stains can be quickly peeled off the surface of the object, reducing the possibility of stain residue, and the cleaning speed is relatively fast.

The pressure system includes a pressure sensor 14, which is used to detect the pressure of the gas in the container 1. The control unit 5 is connected to the pressure sensor 14 signal, and the control unit 5 is connected to the power device 3 signal. The pressure sensor 14 is used to detect the pressure of the gas in the container 1, and the control unit 5 can determine whether to turn on the power device 3 based on the signal of the pressure sensor 14. The pressure sensor 14 can be any sensor that can detect the total pressure or pressure change. For example, the pressure sensor 14 can be a sensor using the piezoresistive effect or the piezoelectric effect. Other examples include a pressure sensor with a Hall element, a capacitive pressure sensor, or an inductive pressure sensor. Multiple pressure sensors 14 can also be used. For example, one pressure sensor 14 can detect the total pressure in the container 1, and another pressure sensor 14 can detect the change in pressure in the container 1.

The pressure system includes a liquid inlet pipeline 12, which can connect the container 1 and the liquid reservoir 2, and the pressure system includes a first control valve 6, which is used to control the conduction and closing of the liquid inlet pipeline 12; when the cleaning system is in the first working state, the power device 3 allows the liquid in the liquid reservoir 2 to enter the container 1 through the liquid inlet pipeline 12. When the first control valve 6 is opened, the liquid inlet pipeline 12 is conducted; when the first control valve 6 is closed, the liquid inlet pipeline 12 is not conducted. The first control valve 6 can be unidirectional or bidirectional. For example, when the first control valve 6 is unidirectional, after the first control valve 6 is opened, the liquid in the reservoir 2 can flow into the container 1 through the liquid inlet pipeline 12, and the liquid flowing into the container 1 cannot flow back into the reservoir 2. The liquid can only flow in one direction to prevent backflow. When the first control valve 6 is bidirectional, after the first control valve 6 is opened, the liquid in the reservoir 2 can flow into the container 1 through the liquid inlet pipeline 12, and the liquid flowing into the container 1 can also flow back into the reservoir 2 through the liquid inlet pipeline 12. At this time, in order to prevent the liquid flowing into the container 1 from flowing back into the reservoir 2, when the liquid in the container 1 reaches a predetermined capacity, a closing signal can be sent to the first control valve 6 through the control unit 5, and the first control valve 6 closes after receiving the closing signal sent by the control unit 5. After the power device 3 is turned on, the liquid in the reservoir 2 enters the container 1 through the liquid inlet pipeline 12.

The liquid spraying part includes a cleaning pipeline 10, which can connect the container 1 and the liquid spraying port 41. The liquid spraying part includes a second control valve 7, which is used to control the conduction and closing of the cleaning pipeline 10. When the cleaning system is in the second working state, the liquid in the container 1 is sprayed out from the liquid spraying port 41 through the cleaning pipeline 10. Please refer to Figures 1, 2 and 3. As shown in Figure 1, Figure 1 is the original state of the cleaning system. After a part of the liquid in the liquid reservoir 2 is injected into the container 1, as shown in Figure 2, when the container 1 is stationary, the liquid level is located at the first position a of the container 1. After the surface cleaning is completed, when the container 1 is stationary, the liquid level is located at the second position b in the container 1. At this time, the volume of the liquid in the container 1 is less than the volume of the liquid when the liquid level is located at the first position a of the container 1. The liquid in the container 1 is compressed by the gas in the container 1 to form a compressed liquid. When cleaning the surface to be cleaned, the flushing pressure is relatively high. Under the action of the high pressure, the fluid can quickly break up the dirt on the surface, and the stains can be peeled off the surface of the object relatively quickly, reducing the possibility of stain residue and the cleaning speed is relatively fast. Moreover, compared with cleaning with chemical agents, cleaning with high-pressure fluid is not easy to damage the environment.

The blowing part includes a blowing pipeline 11, which can connect the container 1 and the air jet 42. The blowing part includes a third control valve 8, which is used to control the conduction and closing of the third control valve 8. When the cleaning system is in the second working state, the compressed gas in the container 1 is ejected from the air jet 42 through the blowing pipeline 11. The blowing pressure is high, and the compressed gas can accelerate the surface airflow of the cleaning liquid remaining on the surface, so that the gas takes away the moisture faster, so that it is not easy to cause the cleaning liquid to remain, and the cleaning effect is better.

The pressure system also includes a reflux line 13, which connects the container 1 and the liquid reservoir 2. The pressure system includes a fourth control valve 9, which is used to control the conduction and closing of the reflux line 13. When the cleaning system is working, at least part of the liquid in the container 1 flows back to the liquid reservoir 2 through the reflux line 13. As shown in Figures 3 and 4, after at least part of the liquid in the container 1 flows back to the liquid reservoir 2 through the reflux line 13, the liquid level is located at the third position c in the container 1 when the container 1 is stationary. At this time, the capacity of the liquid in the container 1 is less than the capacity of the liquid when the liquid level is at the second position b of the container 1.

The pressure system further includes a liquid level sensor 15, which can be any sensor capable of detecting the position of the liquid in the container 1, for example, the liquid level sensor 15 can be a float type liquid level sensor, a float type liquid level sensor, a static pressure type liquid level sensor, etc. When the position of the liquid detected by the liquid level sensor 15 is lower than the position of the liquid level sensor 15, the control unit 5 closes the third control valve 8 and the fourth control valve 9 according to the signal of the liquid level sensor 15.

The first control valve 6, the second control valve 7, the third control valve 8 and the fourth control valve 9 mentioned above may be solenoid valves, electronic expansion valves, throttle valves, etc., but are not limited thereto.

In other embodiments, the nozzle 4 includes a liquid spray port 41 and an air jet port 42, and the liquid spray port 41 and the air jet port 42 can be replaced by a gas-liquid dual-purpose nozzle. Furthermore, if both the liquid spray port 41 and the air jet port 42 are replaced by a gas-liquid dual-purpose nozzle, the cleaning system can use a gas-liquid dual-purpose nozzle, and the cleaning pipeline 10 and the air blowing pipeline 11 are connected to the gas-liquid dual-purpose nozzle.

In addition, to improve the cleaning efficiency of the cleaning system, a heater (such as a heating wire) can be provided on the cleaning pipeline 10 or the liquid spray port 41, so that the liquid spray port 41 sprays hot fluid to improve the cleaning effect on stubborn stains. To improve the air blowing efficiency of the cleaning system, a heater (such as a heating wire) can be provided on the air blowing pipeline 11 or the air jet port 42, so that the air jet port 42 blows hot air, thereby increasing the evaporation rate of the liquid, making it difficult for the cleaning liquid to remain on the surface, and achieving a better cleaning effect.

Based on the cleaning system provided in the above embodiment, the present application provides a cleaning method. FIG5 is a flow chart of the cleaning method of the present application. The present embodiment takes cleaning the surface of the sensor as an example, but is not limited thereto. The cleaning method includes the following steps:

The power device is turned on, and the liquid in the liquid reservoir 2 is injected into the container 1 filled with gas to compress the gas in the container 1; the pressure of the gas in the container 1 is detected, and when the pressure of the gas reaches a predetermined value P1, the control unit 5 turns off the power device 3;

Specifically, the pressure of the gas in the container 1 is detected, and the control unit 5 controls the opening and closing of the power device 3 according to the detected gas pressure; when the power device 3 is turned on, a part of the liquid in the liquid reservoir 2 is injected into the container 1, so that the gas in the container 1 is compressed to form compressed gas, and when it is detected that the gas pressure reaches a predetermined value, the control unit 5 controls the power device 3 to be closed after receiving the pressure signal. The above-mentioned predetermined pressure can be a pre-set, constant pressure or can be set according to a request signal.

In this embodiment, the pressure sensor 14 transmits the detected pressure signal in the container 1 to the control unit 5. When the pressure sensor 14 detects that the pressure in the container 1 is normal atmospheric pressure, the power device 3 is turned on after receiving the start signal sent by the control unit 5; when the pressure sensor 14 detects that the pressure in the container 1 reaches a predetermined value P1, the power device 3 is turned off after receiving the close signal sent by the control unit 5.

After the control unit 5 receives the cleaning instruction, the liquid in the container 1 is sprayed out through the spray port 41 to clean the sensor surface that needs to be cleaned; spray ports of different sizes can be used according to the surface area of the cleaning surface, and the different sizes here refer to the size of the component that can affect the single water spray volume of the spray port, such as the diameter of the nozzle of the spray port.

By cleaning the pipeline 10 and the second control valve 7, the second control valve 7 opens after receiving the opening signal sent by the control unit 5, and the liquid in the container 1 is sprayed out from the spray port 41 after passing through the cleaning pipeline 10. After the cleaning is completed, the second control valve 7 is closed.

After cleaning is completed, the compressed gas in the container 1 is ejected through the jet port 42 to blow air to the cleaned sensor surface. Jet ports of different sizes can be used according to the surface area of the cleaning surface. The different sizes here refer to the size of the component that can affect the single jet volume of the jet port, such as the diameter of the nozzle of the jet port.

Through the blowing pipeline 11 and the third control valve 8, the third control valve 8 opens after receiving the opening signal sent by the control unit 5, and the compressed gas in the container 1 is ejected from the jet port 42 after passing through the blowing pipeline 11. After the blowing is completed, the third control valve 8 is closed.

After the blowing is completed, the pressure of the gas in the container 1 is set to P2, and the minimum gas pressure that can spray away the water droplets is set to P3. The pressure signal detected in the container 1 is transmitted to the control unit 5. When P2 ≥ (P1-P2+P3), no action is taken, and the next cleaning instruction is waited for. When P2 < (P1-P2+P3), at least part of the liquid in the container 1 flows back to the liquid reservoir 2 through the reflux line 13, and the gas flows back to the container 1 through the blowing line 11. Specifically, through the reflux line 13 and the fourth control valve 9, the third control valve 8 and the fourth control valve 9 are opened after receiving the opening signal of the control unit 5, and at least part of the liquid in the container 1 flows back to the liquid reservoir 2 through the reflux line 13, and the gas flows back to the container 1 through the blowing line 11; the gas flowing back to the container 1 can be the gas in the environment, such as the environment of the vehicle.

The liquid level sensor 15 transmits the position signal of the detected liquid in the container 1 to the control unit 5. When the position of the liquid is detected to be lower than the position of the liquid level sensor 15, the third control valve 8 and the fourth control valve 9 are closed after receiving the closing signal of the control unit 5, and the liquid in the container 1 stops flowing back to the liquid reservoir 2, and the gas stops flowing back to the container 1 at the same time.

It should be noted that the above embodiments are only used to illustrate the present application and are not intended to limit the technical solutions described in the present application. Although the present application has been described in detail in this specification with reference to the above embodiments, a person of ordinary skill in the art should understand that a person of ordinary skill in the art can still modify or make equivalent substitutions to the present application, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present application should be included in the scope of the claims of the present application.

Claims (10)

1. A cleaning system, characterized in that the cleaning system comprises a pressure system, a liquid spraying part, and an air blowing part, the pressure system comprises a container (1), a liquid reservoir (2) and a power device (3), the container (1) has a accommodating chamber, the liquid spraying port (41) of the liquid spraying part can be communicated with the accommodating chamber, the air jet port (42) of the air blowing part can be communicated with the accommodating chamber, and the accommodating chamber can be communicated with the liquid storage chamber of the liquid reservoir (2); the cleaning system comprises a first working state and a second working state, in the first working state, the power device (3) causes the liquid in the liquid reservoir (2) to be injected into the container (1) filled with gas to compress the gas in the container (1); in the second working state, the liquid spraying port (41) sprays liquid, and the air jet port (42) sprays gas. 2. The cleaning system according to claim 1 is characterized in that the cleaning system comprises a control unit (5), the pressure system comprises a pressure sensor (14), the control unit (5) is connected to the pressure sensor (14) by signal, the control unit (5) is connected to the power device (3) by signal, the pressure sensor (14) is used to detect the pressure of the gas in the container (1), and the control unit (5) can determine whether to turn on the power device (3) according to the signal of the pressure sensor (14). 3. The cleaning system according to claim 1 or 2 is characterized in that the pressure system includes a liquid inlet pipeline (12), the liquid inlet pipeline (12) can connect the container (1) and the liquid reservoir (2), and the pressure system includes a first control valve (6), the first control valve (6) is used to control the conduction and closing of the liquid inlet pipeline (12); when the cleaning system is in the first working state, the power device (3) allows the liquid in the liquid reservoir (2) to enter the container (1) through the liquid inlet pipeline (12). 4. The cleaning system according to any one of claims 1 to 3, characterized in that the liquid spraying part comprises a cleaning pipeline (10), the cleaning pipeline (10) can connect the container (1) and the liquid spraying port (41), the liquid spraying part comprises a second control valve (7), the second control valve (7) is used to control the conduction and closing of the cleaning pipeline (10), and when the cleaning system is in the second working state, the liquid in the container (1) is sprayed out from the liquid spraying port (41) through the cleaning pipeline (10). 5. The cleaning system according to any one of claims 1 to 3 is characterized in that the blowing part comprises a blowing pipeline (11), the blowing pipeline (11) can connect the container (1) and the air jet (42), the blowing part comprises the third control valve (8), the third control valve (8) is used to control the conduction and closing of the third control valve (8), and when the cleaning system is in the second working state, the compressed gas in the container (1) is ejected from the air jet (42) through the blowing pipeline (11). 6. The cleaning system according to claim 5, wherein the pressure system comprises a return line (13), wherein the return line (13) connects the container (1) and the liquid reservoir (2), and wherein the pressure system comprises a fourth control valve (9), wherein the fourth control valve (9) is used to control the opening and closing of the return line (13); when the cleaning system is working, at least part of the liquid in the container (1) flows back to the liquid reservoir (2) via the return line (13). 7. The cleaning system according to claim 6 is characterized in that the pressure system further comprises a liquid level sensor (15), wherein the liquid level sensor (15) is used to detect the position of the liquid in the container (1), and when the position of the liquid detected by the liquid level sensor (15) is lower than the position of the liquid level sensor (15), the control unit (5) closes the third control valve (8) and the fourth control valve (9) according to the signal of the liquid level sensor (15). 8. A cleaning method, characterized in that it comprises the following steps: The power device is turned on, and the liquid in the liquid storage device (2) is injected into the container (1) filled with gas to compress the gas in the container (1); the pressure of the gas in the container (1) is detected, and when the pressure of the gas reaches a predetermined value P1, the control unit (5) turns off the power device (3); After the control unit (5) receives the cleaning instruction, the liquid in the container (1) is sprayed out through the liquid spraying port (41) for cleaning; After cleaning is completed, the compressed gas in the container (1) is ejected through the jet port (42) for blowing. 9. The cleaning method according to claim 8 is characterized in that, after the blowing is completed, the pressure of the gas in the container (1) is set to P2, and the minimum gas pressure that can blow away the droplets is set to P3, and the detected pressure signal of the gas in the container (1) is transmitted to the control unit (5), when P2 ≥ (P1-P2+P3), no action is taken, and the next cleaning instruction is waited for; when P2 < (P1-P2+P3), at least part of the liquid in the container (1) flows back to the liquid reservoir (2) through the reflux pipeline (13), and the gas flows back to the container (1) through the blowing pipeline (11). 10. The cleaning method according to claim 8 or 9 is characterized in that a position signal of the liquid in the container (1) is transmitted to the control unit (5), and when the position of the liquid is detected to be lower than the position of the liquid level sensor (15), the liquid in the container (1) stops flowing back to the liquid reservoir (2), and the gas stops flowing back to the container (1).