CN117962815A

CN117962815A - Cleaning system and method thereof

Info

Publication number: CN117962815A
Application number: CN202211302454.5A
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Zhejiang Sanhua Automotive Components Co Ltd
Current assignee: Zhejiang Sanhua Automotive Components Co Ltd
Priority date: 2022-10-24
Filing date: 2022-10-24
Publication date: 2024-05-03

Abstract

The application discloses a cleaning system, which comprises a pressure system, a liquid spraying part and a blowing part, wherein the pressure system comprises a container, a liquid reservoir and a power device, the container is provided with a containing cavity, a liquid spraying port of the liquid spraying part can be communicated with the containing cavity, a gas spraying port of the blowing part can be communicated with the containing cavity, and the containing cavity can be communicated with a liquid storage cavity of the liquid reservoir; the cleaning system comprises a first working state and a second working state, wherein in the first working state, the power device enables liquid in the liquid storage device to be injected into the container filled with the gas so as to compress the gas in the container; in the second working state, the liquid spraying port sprays liquid and the gas spraying port sprays gas. The application also discloses a cleaning method. The application has the characteristic of reducing the use cost.

Description

Cleaning system and method thereof

[ Field of technology ]

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

[ Background Art ]

Automobile driving generally adopts various auxiliary devices (such as radar, sensors and the like) to sense the external surrounding environment, and external stains such as dust, ice and snow, mosquitoes, bird droppings and the like can cause the external stains to be polluted to different degrees so as to seriously influence the normal operation of the external stains, so that the external environment around a vehicle body is better identified and accurately identified, the surfaces of the auxiliary devices are required to be cleaned, a compressed air storage tank or a separate air pump is generally adopted in the cleaning process to provide high-pressure air to blow and dry moisture, but a larger space is required to accommodate the air storage tank or the air pump, and the use cost is higher.

[ Invention ]

The application aims to provide a cleaning system and a cleaning method, which are beneficial to reducing the use cost.

In order to achieve the above object, one embodiment of the present application adopts the following technical scheme:

A cleaning system comprising a pressure system, a liquid spraying part and a blowing part, wherein the pressure system comprises a container, a liquid reservoir and a power device, the container is provided with a containing cavity, a liquid spraying port of the liquid spraying part can be communicated with the containing cavity, a gas spraying port of the blowing part can be communicated with the containing cavity, and the containing cavity can be communicated with a liquid storage cavity of the liquid reservoir; the cleaning system comprises a first operating state and a second operating state, in the first operating state, the power device enables liquid in the liquid storage device to be injected into the container filled with gas so as to compress the gas in the container; in the second working state, the liquid spraying port sprays liquid, and the gas spraying port sprays gas.

In the technical scheme, the containing cavity of the container is communicated with the liquid storage device of the liquid storage device, the power device enables liquid in the liquid storage device to be injected into the container filled with the gas, the gas in the container is compressed to form compressed gas, parts of devices are reduced, containing space is saved, and therefore use cost is reduced.

[ Description of the drawings ]

FIG. 1 is a schematic view of the cleaning system of the present application in an initial state;

FIG. 2 is a schematic illustration of the cleaning system of the present application after filling the container with liquid;

FIG. 3 is a schematic illustration of the cleaning system of the present application after cleaning is completed;

FIG. 4 is a schematic illustration of the cleaning system of the present application after blowing is completed with liquid in the container returned to the reservoir;

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

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

[ Detailed description ] of the invention

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

In order to make the technical scheme of the present application better understood by those skilled in the art, the present application will be further described in detail with reference to the accompanying drawings and the detailed description. It is evident that the drawings in the following description are only some embodiments of the present application and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art. The terms upper, lower, etc. used herein are defined with respect to the positions of the components shown in the drawings, and are merely for clarity and convenience of presentation, it should be understood that the terms used herein should not limit the scope of the application as claimed.

Fig. 1 to 4 are schematic views of the cleaning system of the present application at different stages, and referring to fig. 1 to 4, the cleaning system of the present application can be used for cleaning surfaces of sensors, cameras, radars, windshields, etc., but is not limited thereto. The cleaning system comprises a pressure system, a liquid spraying part, a blowing part and a control unit 5, wherein the pressure system comprises a container 1, a liquid storage device 2 and a power device 3, the liquid storage device 2 contains liquid for cleaning, such as water or cleaning agent, the power device 3 can provide power for the transportation of the liquid in the liquid storage device 2, so that part of the liquid in the liquid storage device 2 flows into the container 1, and the power device 3 can be a water pump or other devices capable of providing power. The power plant 3 is turned on in response to an on signal sent by the control unit 5 or the power plant 3 is turned off in response to an off signal sent by the control unit 5. The container 1 has a containing cavity, a liquid spraying port 41 of the liquid spraying part can be communicated with the containing cavity, a gas spraying port 42 of the gas blowing part can be communicated with the containing cavity, and the containing cavity can be communicated with a liquid storage cavity of the liquid reservoir 2; the cleaning system includes a first operation state in which the power device 3 causes the liquid in the liquid reservoir 2 to be injected into the gas-filled container 1 to compress the gas in the container 1, and a second operation state in which the liquid-spraying port 41 sprays the liquid and the gas-spraying port 42 sprays the gas. The application can obtain high-pressure gas without configuring a compressed gas tank or an air pump, saves the accommodating space, has simple component configuration, and is beneficial to reducing the use cost. Simultaneously, the compressed gas in the container 1 can compress the liquid in the container 1, the compressed liquid is adopted to clean the surface, the flushing pressure is higher, under the action of high pressure, the liquid can quickly break dirt on the surface, the dirt can be quickly peeled off the surface of an object, the possibility of dirt residue is reduced, and the cleaning speed is higher.

The pressure system comprises a pressure sensor 14, wherein the pressure sensor 14 is used for detecting the pressure of the gas in the container 1, the control unit 5 is in signal connection with the pressure sensor 14, the control unit 5 is in signal connection with the power device 3, the pressure sensor 14 is used for detecting the pressure of the gas in the container 1, and the control unit 5 can judge whether to start the power device 3 according to the signal of the pressure sensor 14. The pressure sensor 14 may be any sensor capable of detecting the total pressure or pressure change. For example, the pressure sensor 14 may be a sensor using a piezoresistive effect or a piezoelectric effect. Other examples include pressure sensors with hall elements, capacitive pressure sensors, or inductive pressure sensors. Multiple pressure sensors 14 may also be employed. For example, one pressure sensor 14 may detect the total pressure in the vessel 1 and another pressure sensor 14 may detect a change in pressure in the vessel 1.

The pressure system comprises a liquid inlet pipeline 12, the liquid inlet pipeline 12 can be communicated with the container 1 and the liquid reservoir 2, the pressure system comprises a first control valve 6, and the first control valve 6 is used for controlling the connection and the disconnection of the liquid inlet pipeline 12; when the cleaning system is in the first working state, the power device 3 enables the liquid in the liquid storage device 2 to enter the container 1 through the liquid inlet pipeline 12. The first control valve 6 is opened, and the liquid inlet pipeline 12 is communicated; the first control valve 6 is closed and the feed line 12 is not conductive. The first control valve 6 can be conducted in one direction or in two directions, for example, when the first control valve 6 is conducted in one direction, after the first control valve 6 is opened, the liquid in the liquid reservoir 2 can flow into the container 1 through the liquid inlet pipeline 12, the liquid flowing into the container 1 can not flow back into the liquid reservoir 2 again, and the liquid can only flow along one direction, so that the backflow phenomenon can be prevented; when the first control valve 6 is turned on bidirectionally, after the first control valve 6 is turned on, the liquid in the liquid reservoir 2 can flow into the container 1 through the liquid inlet pipeline 12, the liquid flowing into the container 1 can also flow back into the liquid 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 liquid 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 is closed after receiving the closing signal sent by the control unit 5. After the power device 3 is started, the liquid in the liquid reservoir 2 enters the container 1 through the liquid inlet pipeline 12.

The liquid spraying part comprises a cleaning pipeline 10, the cleaning pipeline 10 can be communicated with 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 for controlling the connection and the disconnection of the cleaning pipeline 10, and when the cleaning system is in a second working state, liquid in the container 1 is sprayed out of the liquid spraying port 41 through the cleaning pipeline 10. Referring to fig. 1,2 and 3, as shown in fig. 1, fig. 1 is an original state of the cleaning system, after a portion of the liquid in the liquid reservoir 2 is injected into the container 1, as shown in fig. 2, the liquid level is at a first position a of the container 1 when the container 1 is stationary, and after the cleaning of the surface is completed, the liquid level is at a second position b of the container 1 when the container 1 is stationary, and at this time, the volume of the liquid in the container 1 is smaller than the volume of the liquid when the liquid level is at the first position a of the container 1. The liquid in the container 1 can be compressed by the gas in the container 1 to form compressed liquid, when the surface to be cleaned is cleaned, the flushing pressure is higher, under the action of high pressure, the fluid can quickly break dirt on the surface, the dirt can be quickly peeled off the surface of an object, the possibility of dirt residue is reduced, and the cleaning speed is higher; and compared with the cleaning by adopting a chemical agent, the environment is not easy to be damaged by adopting high-pressure fluid for cleaning.

The blowing part comprises a blowing pipeline 11, the blowing pipeline 11 can be communicated with the container 1 and the air jet 42, the blowing part comprises a third control valve 8, the third control valve 8 is used for controlling the on and off of the third control valve 8, and when the cleaning system is in a second working state, compressed gas in the container 1 is jetted out from the air jet 42 through the blowing pipeline 11. The blowing pressure is higher, and the surface air flow of residual cleaning liquid on the surface can be quickened by compressed gas, so that the gas takes away moisture more quickly, the residual cleaning liquid is not easy to cause, and the cleaning effect is better.

The pressure system further comprises a return line 13, the return line 13 is communicated with the container 1 and the liquid storage device 2, the pressure system comprises a fourth control valve 9, the fourth control valve 9 is used for controlling the connection and the disconnection of the return line 13, when the cleaning system works, at least part of liquid in the container 1 flows back to the liquid storage device 2 through the return line 13, as shown in fig. 3 and 4, at least part of liquid in the container 1 flows back to the liquid storage device 2 through the return line 13, the liquid level is located at a third position c in the container 1 when the container 1 is stationary, and the liquid capacity in the container 1 is smaller than the liquid capacity when the liquid level is located at a second position b of the container 1.

The pressure system further comprises a liquid level sensor 15, the liquid level sensor 15 may be any sensor capable of detecting the position of the liquid in the container 1, for example, the liquid level sensor 15 may be 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 may be, but not limited to, solenoid valves, electronic expansion valves, throttle valves, and the like.

In other embodiments, the nozzle 4 includes a liquid spraying port 41 and a gas spraying port 42, and the liquid spraying port 41 and the gas spraying port 42 can be replaced by gas-liquid dual-purpose nozzles respectively. And, if the liquid spray port 41 and the air spray port 42 are replaced with gas-liquid dual-purpose nozzles, the cleaning system may employ one gas-liquid dual-purpose nozzle to which the cleaning line 10 and the air blow line 11 are connected.

In order to improve the cleaning efficiency of the cleaning system, a heater (e.g., a heater wire) may be provided in the cleaning line 10 or the liquid ejection port 41 to eject the hot fluid from the liquid ejection port 41, thereby improving the cleaning effect on stubborn stains. In order to improve the blowing efficiency of the cleaning system, a heater (such as a heating wire) may be further disposed on the blowing pipeline 11 or the air nozzle 42, so that the air nozzle 42 blows out hot air, thereby improving the evaporation rate of the liquid, ensuring that the cleaning liquid is not easy to remain on the surface, and having better cleaning effect.

Based on the cleaning system provided in the above embodiment, the present application provides a cleaning method, and fig. 5 is a flowchart of the cleaning method of the present application, where the cleaning method includes the following steps:

Starting the power device, and injecting the liquid in the liquid reservoir 2 into the container 1 filled with the gas to compress the gas in the container 1; detecting the pressure of the gas in the container 1, and when detecting that the pressure of the gas reaches a predetermined value P1, the control unit 5 turns off the power unit 3;

Specifically, the pressure of the gas in the container 1 is detected, and the control unit 5 controls the power device 3 to be turned on and off according to the detected pressure of the gas; when the power device 3 is started, a part of liquid in the liquid storage device 2 is injected into the container 1, so that the gas in the container 1 is compressed to form compressed gas, and when the pressure of the gas is detected to reach a preset value, the control unit 5 receives a pressure signal and then controls the power device 3 to be closed. The predetermined pressure may be a preset, constant pressure or may 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, and when the pressure sensor 14 detects that the pressure in the container 1 is normal atmospheric pressure, the power device 3 receives the opening signal sent by the control unit 5 and then opens; when the pressure sensor 14 detects that the pressure in the container 1 reaches the predetermined value P1, the power device 3 receives a closing signal sent by the control unit 5 and closes.

After receiving the cleaning instruction, the control unit 5 sprays liquid in the container 1 through the liquid spraying port 41 to clean the surface of the sensor to be cleaned; different sizes of spray orifices may be used depending on the surface area of the cleaning surface, where different sizes refer to the size of the component that affects the amount of single spray from the spray orifice, such as the diameter of the spray head of the spray orifice.

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

After the cleaning is completed, the compressed gas in the container 1 is sprayed out through the gas spraying port 42 to blow the cleaned sensor surface. Different sizes of gas jets may be used depending on the surface area of the cleaning surface, where different sizes refer to the size of the component that can affect the single jet of gas from the jet, such as the diameter of the jet nozzle of the jet.

By means of the air blowing pipeline 11 and the third control valve 8, the third control valve 8 is opened after receiving the opening signal sent by the control unit 5, compressed air in the container 1 is sprayed out from the air spraying port 42 after passing through the air blowing pipeline 11, and the third control valve 8 is closed after air blowing is completed.

After the blowing is finished, the pressure of the gas in the container 1 is set as P2, the minimum gas pressure of water drops can be set as P3, a detected pressure signal in the container 1 is transmitted to the control unit 5, when the pressure of the pressure signal in the container 1 is more than or equal to (P1-P2+P3), no action is required, the next cleaning instruction is waited, and when the pressure of the pressure signal in the container 1 is less than or equal to (P1-P2+P3), at least part of liquid in the container 1 flows back to the liquid storage device 2 through the backflow pipeline 13, and meanwhile, the gas flows back to the container 1 through the blowing pipeline 11. Specifically, by means of the return 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, at least part of the liquid in the container 1 is returned to the reservoir 2 through the return line 13, and the gas is returned to the container 1 through the blowing line 11; the gas returned to the container 1 may be ambient gas, such as the environment of a vehicle.

The liquid level sensor 15 transmits the detected position signal of the liquid in the container 1 to the control unit 5, and when the detected position of the liquid is 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, the liquid in the container 1 stops flowing back to the liquid reservoir 2, and the gas stops flowing back to the container 1.

It should be noted that: although the present application has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the present application may be modified or equivalent thereto without departing from the spirit and scope of the application, and all such modifications and improvements thereof are intended to be included within the scope of the appended claims.

Claims

1. A cleaning system, characterized in that the cleaning system comprises a pressure system, a liquid spraying part and a blowing part, wherein the pressure system comprises a container (1), a liquid storage device (2) and a power device (3), the container (1) is provided with a containing cavity, a liquid spraying port (41) of the liquid spraying part can be communicated with the containing cavity, a gas spraying port (42) of the blowing part can be communicated with the containing cavity, and the containing cavity can be communicated with the liquid storage cavity of the liquid storage device (2); the cleaning system comprises a first operating condition in which the power device (3) causes the liquid in the 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 gas spraying port (42) sprays gas.

2. A cleaning system according to claim 1, characterized in that the cleaning system comprises a control unit (5), the pressure system comprises a pressure sensor (14), the control unit (5) is in signal connection with the power unit (3), the pressure sensor (14) is used for detecting the pressure of the gas in the container (1), and the control unit (5) can judge whether to start the power unit (3) according to the signal of the pressure sensor (14).

3. A cleaning system according to claim 1 or 2, characterized in that the pressure system comprises a feed line (12), the feed line (12) being capable of communicating the container (1) with the reservoir (2), the pressure system comprising a first control valve (6), the first control valve (6) being adapted to control the opening and closing of the feed line (12); when the cleaning system is in a first working state, the power device (3) enables liquid in the liquid storage device (2) to enter the container (1) through the liquid inlet pipeline (12).

4. A cleaning system according to any one of claims 1-3, characterized in that the liquid spraying part comprises a cleaning pipeline (10), the cleaning pipeline (10) can be communicated with 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 for controlling the connection and the disconnection of the cleaning pipeline (10), and when the cleaning system is in a second working state, liquid in the container (1) is sprayed out of the liquid spraying port (41) through the cleaning pipeline (10).

5. A cleaning system according to any one of claims 1-3, characterized in that the blowing part comprises a blowing line (11), the blowing line (11) being capable of communicating the container (1) with the gas jet (42), the blowing part comprises the third control valve (8), the third control valve (8) is used for controlling the connection and the disconnection of the third control valve (8), and when the cleaning system is in the second working state, compressed gas in the container (1) is jetted out from the gas jet (42) through the blowing line (11).

6. A cleaning system according to claim 5, said pressure system comprising a return line (13), said return line (13) communicating said container (1) with said reservoir (2), said pressure system comprising a fourth control valve (9), said fourth control valve (9) being arranged to control the opening and closing of said return line (13), at least part of the liquid in said container (1) being returned to said reservoir (2) via said return line (13) during operation of said cleaning system.

7. The cleaning system according to claim 6, characterized in that the pressure system further comprises a liquid level sensor (15), the liquid level sensor (15) being adapted to detecting the position of the liquid in the container (1), the control unit (5) closing the third control valve (8) and the fourth control valve (9) in dependence of the signal of the liquid level sensor (15) when the position of the liquid detected by the liquid level sensor (15) is lower than the position of the liquid level sensor (15).

8. A cleaning method comprising the steps of:

Starting a power device, and injecting liquid in a liquid reservoir (2) into a container (1) filled with gas to compress the gas in the container (1); detecting the pressure of the gas in the container (1), and when detecting that the pressure of the gas reaches a preset value P1, closing the power device (3) 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 liquid spraying port (41) for cleaning;

After the cleaning is finished, compressed gas in the container (1) is sprayed out through the air spraying port (42) to blow.

9. The cleaning method according to claim 8, characterized in that the pressure of the gas in the container (1) after blowing is completed is set to P2, the pressure of the smallest gas that can be blown away by the liquid droplets is set to P3, the detected pressure signal of the gas in the container (1) is transmitted to the control unit (5), and when p2 is not less than (p1—p2+p3), no action is taken, waiting for the next cleaning instruction; when P2< (P1-P2+P3), at least part of the liquid in the container (1) is returned to the reservoir (2) through a return line (13), while the gas is returned to the container (1) through a blow line (11).

10. A cleaning method according to claim 8 or 9, characterized in that the detected position signal of the liquid in the container (1) is transmitted to the control unit (5), and when the position of the detected liquid is lower than the position of the liquid level sensor (15), the liquid in the container (1) stops flowing back to the reservoir (2) while the gas stops flowing back to the container (1).