Cleaning method and system

Abstract

The invention relates to the technical field of cleaning, and discloses a cleaning method and system. The cleaning method comprises the steps that cleaning liquid is sprayed to a to-be-cleaned position of a to-be-cleaned object; and spraying cleaning gas to the to-be-cleaned object above the to-be-cleaned position. Cleaning liquid is sprayed to the to-be-cleaned position of the to-be-cleaned object, dirt on the to-be-cleaned object can be removed, and cleaning of the to-be-cleaned object is achieved; the cleaning gas is sprayed above the position to be cleaned, residual cleaning liquid can be removed and dried, residual stains after the cleaning liquid is naturally air-dried can be avoided, the spraying position of the cleaning gas is higher than the position to be cleaned, the cleaning liquid can be limited within a certain range, and the cleaning effect is improved. The situation that a cleaned area is polluted due to splashing of the cleaning liquid in the spraying process is avoided, gas-liquid two-phase synergistic efficient cleaning is achieved through the cleaning liquid and the cleaning gas, and the cleaning efficiency and quality of cleaning operation are improved.

Description

Technical Field

[0001] This invention relates to the field of cleaning technology, and more specifically to a cleaning method and system. Background Technology

[0002] A building curtain wall is an external envelope or decorative structure primarily used in building construction. It typically consists of glass, metal, or stone panels and a supporting structural system, serving both decorative and protective functions. Currently, the primary method for cleaning building curtain walls is manual cleaning, which is inefficient and yields low quality, especially for high-rise buildings. Therefore, there is a need for an automated cleaning system for building curtain walls. Summary of the Invention

[0003] The purpose of this invention is to overcome the problems of low cleaning efficiency and low quality in the cleaning process of high-rise building curtain walls in the existing technology, and to provide a cleaning method and system to improve the cleaning efficiency and quality of cleaning operations.

[0004] To achieve the above objectives, the present invention provides a cleaning method, comprising spraying a cleaning liquid onto a location of an object to be cleaned, and spraying a cleaning gas onto the object above the location of the object to be cleaned.

[0005] In some embodiments, the cleaning method includes forming a ring of air around the periphery of the location to be cleaned, at least partially, with the cleaning gas, and / or the cleaning method includes atomizing the cleaning liquid before spraying it onto the location to be cleaned.

[0006] A second aspect of the present invention provides a cleaning system for implementing the cleaning method described above, comprising a cleaning liquid spraying device for spraying cleaning liquid onto the cleaning location of an object to be cleaned; and a cleaning gas spraying device for spraying cleaning gas onto the object to be cleaned above the cleaning location.

[0007] In some embodiments, the cleaning gas injection device is configured to form an air ring at least partially surrounding the outer periphery of the location to be cleaned; and / or the cleaning gas injection device includes: a cleaning gas nozzle for injecting the cleaning gas onto the object to be cleaned; and a cleaning gas drive for drawing in ambient air as the cleaning gas and supplying it to the cleaning gas nozzle.

[0008] In some embodiments, the angle between the spray direction of the cleaning liquid and the spray direction of the cleaning gas and the object to be cleaned is in the range of 0° to 90°; and / or the cleaning liquid spraying device includes a cleaning liquid nozzle that sprays cleaning liquid onto the location to be cleaned, and the cleaning system further includes a mobile work platform, on which both the cleaning liquid nozzle and the cleaning gas spraying device are mounted.

[0009] In some embodiments, the cleaning fluid spraying device further includes an atomizing mechanism connected to the cleaning fluid nozzle, the atomizing mechanism being used to atomize the cleaning fluid before supplying it to the cleaning fluid nozzle.

[0010] In some embodiments, the atomizing mechanism includes: a compressed gas delivery assembly for delivering compressed gas; a cleaning fluid delivery assembly for delivering the cleaning fluid; and an atomizer, the inlet of which is connected to the compressed gas delivery assembly and the cleaning fluid delivery assembly, and the outlet of which is connected to the cleaning fluid nozzle.

[0011] In some embodiments, the atomizer includes a mixing chamber for mixing the compressed gas and the cleaning fluid; and / or the compressed gas delivery assembly includes: a compressor for compressing the gas; and a compressed gas reservoir connected to the compressor and the atomizer.

[0012] In some embodiments, the direction of the compressed gas entering the mixing chamber is perpendicular to the direction of the cleaning fluid entering the mixing chamber; and / or the cleaning fluid delivery assembly includes: a cleaning fluid storage tank for storing the cleaning fluid; and a cleaning fluid drive for driving the cleaning fluid in the cleaning fluid storage tank to be delivered to the atomizer.

[0013] In some embodiments, an air inlet for the compressed gas is located on one end wall of the mixing chamber, and an atomized liquid outlet for the atomized cleaning liquid is located on the other end wall of the mixing chamber. The atomizer also includes an annular liquid inlet chamber surrounding the mixing chamber and disposed on the outer periphery of the mixing chamber. The liquid inlet of the liquid inlet chamber is located on one end wall of the liquid inlet chamber, and the liquid inlet chamber and the mixing chamber are radially connected through multiple connecting holes. And / or the cleaning liquid delivery assembly further includes a first flow detector, which is used to detect the flow rate of the cleaning liquid input to the atomizer.

[0014] In some embodiments, the plurality of the connecting holes are evenly distributed on the peripheral wall of the mixing chamber.

[0015] In some embodiments, the compressed gas delivery assembly further includes a second flow detector for detecting the flow rate of the compressed gas input to the atomizer.

[0016] The above technical solution involves spraying cleaning liquid onto the area to be cleaned to remove dirt and achieve cleaning. Spraying cleaning gas above the area not only removes residual cleaning liquid and dries it, but also prevents stains from remaining after the cleaning liquid has air-dried. Furthermore, the cleaning gas is sprayed above the area to be cleaned, confining the cleaning liquid within a certain range and preventing splashing that could contaminate the cleaned area. This combined gas-liquid synergy achieves efficient cleaning, improving both the efficiency and quality of the cleaning operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the cleaning system provided by the present invention; Figure 2 This is a schematic diagram of the structure of the atomizer of the cleaning system provided by the present invention; Figure 3 This is a cross-sectional view of the atomizer of the cleaning system provided by the present invention; Figure 4 This is a schematic diagram of the cleaning system provided by the present invention spraying cleaning liquid and cleaning gas onto the object to be cleaned; Figure 5 These are schematic diagrams illustrating various shapes of the cleaning liquid sprayed by the cleaning liquid spraying device of the cleaning system provided by the present invention; and Figure 6 These are schematic diagrams showing various shapes of the cleaning gas injected by the cleaning gas injection device of the cleaning system provided by the present invention.

[0018] Explanation of reference numerals in the attached figures 1. Cleaning fluid injection device; 11. Cleaning fluid nozzle; 12. Compressed gas delivery assembly; 121. Compressor; 122. Compressed gas storage tank; 123. Gas storage tank; 124. Filter; 125. Dryer; 126. Second flow detector; 13. Cleaning fluid delivery assembly; 131. Cleaning fluid storage tank; 132. Cleaning fluid drive unit; 133. Pressure detector; 134. First flow detector; 14. Atomizer; 141. Mixing chamber; 142. Liquid inlet chamber; 143. Connecting hole; 144. Liquid inlet; 145. Air inlet; 146. Atomized liquid outlet; 2. Clean gas injection device; 3. The object to be cleaned; 4. Mobile work platform. Detailed Implementation

[0019] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0020] The present invention provides a cleaning method, comprising spraying a cleaning liquid onto the cleaning position of an object 3 to be cleaned; and spraying a cleaning gas onto the object 3 above the cleaning position.

[0021] Spraying cleaning liquid onto the area to be cleaned 3 removes dirt and achieves cleaning. Spraying cleaning gas onto the area above the area to be cleaned not only removes residual cleaning liquid and dries the area, but also prevents stains from remaining after the cleaning liquid has air-dried. Furthermore, the cleaning gas is sprayed from a position higher than the area to be cleaned, which confines the cleaning liquid within a certain range and prevents splashing during spraying that could contaminate the cleaned area. The cleaning liquid and cleaning gas achieve efficient gas-liquid two-phase synergy cleaning, improving the efficiency and quality of the cleaning operation.

[0022] The cleaning solution mentioned above can be water or a mixture of water and cleaning agent.

[0023] In some embodiments, the cleaning method includes forming a cleaning gas ring that at least partially surrounds the periphery of the area to be cleaned. The gas ring at least partially surrounds the periphery of the area to be cleaned, which can prevent the cleaning liquid sprayed onto the area to be cleaned from splashing onto the other parts of the area to be cleaned, thus preventing the object 3 to be cleaned from being contaminated; and the gas ring can clean and dry the stains on the object 3 to be cleaned.

[0024] Alternatively, the cleaning method may involve atomizing the cleaning fluid before spraying it onto the area to be cleaned. By atomizing the cleaning fluid before spraying it onto the area to be cleaned, the viscosity and density of the cleaning fluid can be reduced, thereby reducing the energy consumption for conveying the cleaning fluid, increasing the conveying height of the atomized cleaning fluid, and reducing the amount of cleaning fluid required, thus saving energy.

[0025] This cleaning method is suitable not only for regular ground and near-ground cleaning operations, but also for the exterior walls of high-rise buildings (including but not limited to metal panel walls, rock and artificial rock walls, brick walls, glass walls, etc.) and aerial facades (including but not limited to wind turbine piles, wind turbine casings and blades, photovoltaic panel surfaces, signal towers, power towers, insulator surfaces, road signs, etc.). This cleaning method is particularly suitable for cleaning building curtain walls.

[0026] See Figure 1 and Figure 4The second aspect of the present invention provides a cleaning system for implementing the cleaning method described above, and includes a cleaning liquid spraying device 1 and a cleaning gas spraying device 2. The cleaning liquid spraying device 1 is used to spray cleaning liquid onto the cleaning position of the object 3 to be cleaned, and the cleaning gas spraying device 2 is used to spray cleaning gas onto the object 3 above the cleaning position.

[0027] The cleaning liquid spraying device 1 sprays cleaning liquid onto the area to be cleaned on the object 3, removing dirt and achieving cleaning. The cleaning gas spraying device 2 sprays cleaning gas onto the object 3 above the area to be cleaned, removing residual cleaning liquid and drying the object 3, preventing stains from remaining after the cleaning liquid dries naturally. Furthermore, the cleaning gas is sprayed at a higher position than the area to be cleaned, confining the cleaning liquid within a certain range and preventing splashing that could contaminate the already cleaned areas. The cleaning liquid and cleaning gas work together to achieve efficient cleaning, improving the efficiency and quality of the cleaning operation.

[0028] In the above, the shapes of the cleaning liquid sprayed by the cleaning liquid spraying device 1 include, but are not limited to, those of... Figure 5 As shown.

[0029] See Figures 4 to 6 In some embodiments, the cleaning gas injection device 2 is configured to form an air ring that at least partially surrounds the outer periphery of the area to be cleaned. The shape of the air ring includes, but is not limited to, those shown. Figure 6 As shown, at least part of the air ring surrounds the outer periphery of the area to be cleaned, thereby enabling the gas drying of the object 3 to be cleaned around the area to be cleaned, and also preventing the cleaning liquid sprayed onto the area to be cleaned from splashing onto the object 3 to be cleaned around the area to be cleaned.

[0030] In some embodiments, the cleaning gas injection device 2 includes a cleaning gas nozzle and a cleaning gas driving component. The cleaning gas nozzle is used to spray cleaning gas onto the object 3 to be cleaned, and the cleaning gas driving component is used to draw in outside air as cleaning gas and supply it to the cleaning gas nozzle. Through the coordinated operation of the cleaning gas nozzle and the cleaning gas driving component, the cleaning gas injection device 2 can efficiently remove cleaning liquid from the surface of the object 3 to be cleaned, while avoiding secondary pollution caused by liquid residue, achieving an environmentally friendly and efficient cleaning effect. At the same time, the air source of the cleaning gas injection device 2 is outside air, which can further reduce the size and weight of the cleaning gas injection device 2 and increase the lifting height of the cleaning gas injection device 2.

[0031] The angle between the spray direction of the cleaning liquid and the spray direction of the cleaning gas and the object to be cleaned 3 can be selected to be between 0° and 90°. Depending on the actual working conditions, different spray angles can be selected so that the cleaning liquid or cleaning gas impacts the surface of the object to be cleaned 3 at a specific angle. The selection of the angle can increase the contact area and impact force between the fluid and the stains, making it easier to remove stubborn stains such as dust and oil. Simultaneous spraying of cleaning liquid and cleaning gas can form a "liquid-gas two-phase impact", where the cleaning liquid first softens or dissolves the stains, and the cleaning gas then accelerates the removal of the stains through airflow impact. Alternatively, after the cleaning liquid has been sprayed onto the surface of the object to be cleaned 3 for a period of time, the combined effect of water impact and airflow impact can significantly shorten the cleaning time.

[0032] In some embodiments, the cleaning fluid spraying device 1 includes a cleaning fluid nozzle 11 that sprays cleaning fluid onto the area to be cleaned. The cleaning system also includes a mobile work platform 4, on which both the cleaning fluid nozzle 11 and the cleaning gas spraying device 2 are mounted. The mobile work platform 4 can move the cleaning fluid nozzle 11 and the cleaning gas spraying device 2, thereby achieving cleaning of different locations on the object 3 to be cleaned and improving cleaning efficiency. Furthermore, placing only the cleaning fluid nozzle 11 and the cleaning gas spraying device 2 on the mobile work platform 4 reduces the load on the mobile work platform 4, increases the lifting height of the mobile work platform 4, and reduces the energy consumed by the movement of the mobile work platform 4.

[0033] Alternatively, the entire cleaning gas injection device 2 can be mounted on the mobile work platform 4.

[0034] In another embodiment, the cleaning gas injection device 2 includes a cleaning gas nozzle, a cleaning gas source, and a cleaning gas drive. The cleaning gas nozzle is disposed on the mobile work platform 4, and the cleaning gas source and the cleaning gas drive are disposed on the ground. The cleaning gas drive is used to deliver the cleaning gas source to the cleaning gas nozzle of the mobile work platform 4.

[0035] In the above, the mobile work platform 4 is an aerial unmanned platform. For example, the mobile work platform 4 includes, but is not limited to, drones, manned / unmanned suspended platforms, climbing robots, ladders, and aerial work platforms.

[0036] Alternatively, the mobile work platform 4 can move up and down at an acute angle to the vertical. Depending on the actual working conditions, different moving angles can be selected to allow the mobile work platform 4 to clean the surface of the object 3 at a stable angle. The choice of angle increases the contact area and impact force between the fluid and the stains, making it easier to remove stubborn stains such as dust and oil; and avoids collisions between the mobile work platform 4 and the object 3.

[0037] In some embodiments, the cleaning fluid spraying device 1 further includes an atomizing mechanism connected to the cleaning fluid nozzle 11. The atomizing mechanism atomizes the cleaning fluid before supplying it to the cleaning fluid nozzle 11. By atomizing the cleaning fluid before supplying it to the cleaning fluid nozzle 11, the viscosity and density of the cleaning fluid can be reduced, thereby reducing the energy consumption for conveying the cleaning fluid. While maintaining the same load on the mobile work platform 4, the working height of the mobile work platform 4 can be increased, thereby increasing the conveying height of the atomized cleaning fluid; and the demand for cleaning fluid is reduced, saving energy.

[0038] In some embodiments, the atomizing mechanism includes a compressed gas delivery assembly 12, a cleaning fluid delivery assembly 13, and an atomizer 14. The compressed gas delivery assembly 12 is used to deliver compressed gas, the cleaning fluid delivery assembly 13 is used to deliver cleaning fluid, the inlet end of the atomizer 14 is connected to the compressed gas delivery assembly 12 and the cleaning fluid delivery assembly 13, and the outlet end of the atomizer 14 is connected to the cleaning fluid nozzle 11. The atomizer 14 mixes the compressed gas supplied by the compressed gas delivery assembly 12 with the cleaning liquid delivered by the cleaning liquid delivery assembly 13, and uses the shear force of the airflow to break the cleaning liquid into tiny droplets. This fine atomization can significantly increase the contact area between the cleaning liquid and the object to be cleaned 3, making it easier to encapsulate and peel off stains. The atomized cleaning liquid can avoid the problem of uneven coverage caused by excessively large droplets in traditional spraying methods. The atomized cleaning liquid has a low liquid content and a long time of contact with the surface of the object to be cleaned 3. In addition, the compressed gas continuously blows the surface during the spraying process, accelerating the liquid blowing. Compared with traditional spraying methods, atomized cleaning can achieve instant washing and drying, avoiding watermarks or cleaning agent residue that affect the aesthetics and function of the object to be cleaned 3. The atomized spray makes the cleaning liquid contact the object to be cleaned 3 in an atomized state, reducing mechanical friction and lowering the risk of scratches or cracks on the surface of the object to be cleaned 3.

[0039] See Figure 2 and Figure 3 In some embodiments, the atomizer 14 includes a mixing chamber 141 for mixing compressed gas and cleaning fluid. The mixing chamber 141 allows the compressed gas and cleaning fluid to be fully sheared, collided, and broken down under the action of the compressed gas, thereby improving the atomization degree of the cleaning fluid, significantly increasing the contact area between the atomized cleaning fluid and the object 3 to be cleaned, and improving the stain removal efficiency.

[0040] In some embodiments, the intake direction of the compressed gas into the mixing chamber 141 is perpendicular to the intake direction of the cleaning liquid into the mixing chamber 141. The compressed gas impacts the cleaning liquid at high speed in the vertical direction, creating a strong shearing effect. This vertical collision tears the cleaning liquid into fine droplets instantly, significantly improving atomization efficiency. The cross-flow between the vertical intake direction and the liquid intake direction creates a complex flow field within the mixing chamber 141. The vortices in the turbulence further break up the droplets and ensure thorough mixing of the gas and liquid phases, preventing stratification.

[0041] Optionally, the angle between the air intake direction of the compressed gas entering the mixing chamber 141 and the liquid intake direction of the cleaning fluid entering the mixing chamber 141 can be an acute angle or an obtuse angle.

[0042] See Figure 3 In some embodiments, an air inlet 145 for compressed gas to enter is disposed on one end wall of the mixing chamber 141, and an atomized liquid outlet 146 for atomized cleaning liquid to be discharged is disposed on the other end wall of the mixing chamber 141. The atomizer 14 also includes an annular liquid inlet chamber 142 disposed around the mixing chamber 141 on its outer periphery. The liquid inlet 144 of the liquid inlet chamber 142 is disposed on one end wall of the liquid inlet chamber 142, and the liquid inlet chamber 142 and the mixing chamber 141 are radially connected through a plurality of connecting holes 143.

[0043] Compressed gas enters through the air inlet 145 on one end wall of the mixing chamber 141, forming a perpendicular crossflow with the cleaning liquid that flows radially from the annular liquid inlet chamber 142 through the connecting hole 143. This causes the cleaning gas to impact the cleaning liquid stream vertically, generating a strong shearing effect that instantly tears the cleaning liquid into tiny droplets. The gas and liquid phases form a complex turbulent field within the mixing chamber 141, and the vortex further breaks up the droplets, ensuring thorough mixing of the gas and liquid and improving the overall atomization effect. After entering through the liquid inlet 144 on one end wall of the liquid inlet chamber 142, the cleaning liquid fills the entire annular cavity. Due to the symmetry of the annular structure, the pressure distribution of the cleaning liquid within the cavity is uniform. It flows radially into the cylindrical mixing chamber 141 through multiple connecting holes 143 at the same flow rate, avoiding the problem of excessively high or low local concentrations caused by single-point liquid entry and ensuring the uniformity of gas-liquid mixing.

[0044] Alternatively, the mixing cavity 141 can be a cylindrical cavity or a square cavity.

[0045] Alternatively, multiple connecting holes 143 can be evenly distributed on the peripheral wall of the mixing chamber 141. The even distribution of multiple connecting holes 143 along the circumference of the mixing chamber 141 further refines the inflow path of the cleaning fluid, dividing it into multiple independent streams. Each stream is fully mixed with the gas within the mixing chamber 141, ultimately forming a uniform atomized liquid. This avoids localized residue or overspray caused by uneven distribution of the cleaning fluid.

[0046] See Figure 1 In some embodiments, the compressed gas delivery assembly 12 includes a compressor 121 and a compressed gas storage tank 122. The compressor 121 is used to compress gas, and the compressed gas storage tank 122 connects the compressor 121 and the atomizer 14. The compressor 121 compresses the gas to form compressed gas, which is stored in the compressed gas storage tank 122 through a pipeline. When the cleaning liquid needs to be atomized, the compressed gas in the compressed gas storage tank 122 is input into the atomizer 14 to atomize the cleaning liquid.

[0047] See Figure 1 In the above-described compressed gas delivery assembly 12, a gas storage tank 123 is also included, which is connected to the compressor 121. The gas storage tank 123 stores the required gas, and the compressor 121 is capable of compressing the gas in the gas storage tank 123.

[0048] See Figure 1 In some embodiments, the compressed gas delivery assembly 12 further includes a filter 124 for filtering the compressed gas input to the atomizer 14. The filter 124 can filter the compressed gas to prevent the atomized cleaning fluid from being contaminated by impurities in the air.

[0049] See Figure 1 In some embodiments, the compressed gas delivery assembly 12 further includes a dryer 125 for drying the compressed gas input to the atomizer 14. The dryer 125 dries the compressed gas to ensure a certain degree of dryness.

[0050] The compressed gas in the compressed gas storage tank 122 passes through the filter 124 and the dryer 125 and enters the atomizer 14, thereby atomizing the cleaning liquid.

[0051] In some embodiments, the compressed gas delivery assembly 12 further includes a second flow detector 126 for detecting the flow rate of the compressed gas input to the atomizer 14. By detecting the flow rate of the compressed gas through the second flow detector 126, the flow rate of the compressed gas entering the atomizer 14 can be controlled.

[0052] See Figure 1 In some embodiments, the cleaning fluid delivery assembly 13 includes a cleaning fluid storage tank 131 and a cleaning fluid drive 132. The cleaning fluid storage tank 131 stores the cleaning fluid, and the cleaning fluid drive 132 drives the cleaning fluid in the cleaning fluid storage tank 131 to be delivered to the atomizer 14. The cleaning fluid drive 132 draws the cleaning fluid from the cleaning fluid storage tank 131 and delivers it to the atomizer 14 through a pipeline, thereby realizing the delivery and supply of the cleaning fluid.

[0053] Alternatively, the cleaning fluid drive unit 132 can be a fluid pump.

[0054] In some embodiments, the cleaning fluid delivery assembly 13 further includes a first flow detector 134 for detecting the flow rate of the cleaning fluid input to the atomizer 14. Based on the flow rate of the cleaning fluid detected by the first flow detector 134, the flow rate of the cleaning fluid input to the atomizer 14 can be controlled.

[0055] The ratio of cleaning fluid to compressed gas is controlled by the first flow detector 134 and the second flow detector 126 to ensure that the cleaning fluid entering the atomizer 14 is fully atomized and that the ratio of compressed gas to cleaning fluid is appropriate.

[0056] In some embodiments, the cleaning fluid delivery assembly 13 further includes a pressure detector 133 to detect the pressure of the cleaning fluid input to the atomizer 14.

[0057] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the inventive concept, various simple modifications can be made to the technical solutions of the present invention. This includes combining various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not further describe the various possible combinations. However, these simple modifications and combinations should also be considered as part of the content disclosed in this invention and are all within the protection scope of this invention.

Claims

1. A cleaning method characterized by, comprising: spraying a cleaning liquid to a cleaning position of an object to be cleaned (3); and spraying a cleaning gas to the object to be cleaned (3) above the cleaning position. The cleaning method comprises forming the cleaning gas into a gas ring at least partially surrounding the periphery of the cleaning position, and / or 2. The cleaning method according to claim 1, wherein, The cleaning method comprises atomizing the cleaning liquid before spraying it to the cleaning position. A cleaning system for implementing the cleaning method of claim 1 or 2, comprising:

3. A cleaning system characterized by, a cleaning liquid spraying device (1) for spraying a cleaning liquid to a cleaning position of an object to be cleaned (3); and a cleaning gas spraying device (2) for spraying a cleaning gas to the object to be cleaned (3) above the cleaning position. The cleaning gas spraying device (2) is configured to form the sprayed cleaning gas into a gas ring at least partially surrounding the periphery of the cleaning position; 4. The cleaning system of claim 3, wherein, and / or The cleaning gas spraying device (2) comprises: a cleaning gas nozzle for spraying the cleaning gas to the object to be cleaned (3); and a cleaning gas driving member for drawing ambient air as the cleaning gas to the cleaning gas nozzle. The angle between the spraying direction of the cleaning liquid and the spraying direction of the cleaning gas and the object to be cleaned (3) ranges from 0° to 90°; and / or The cleaning liquid spraying device (1) comprises a cleaning liquid nozzle (11) for spraying a cleaning liquid to the cleaning position, and the cleaning system further comprises a mobile operation platform (4), and the cleaning liquid nozzle (11) and the cleaning gas spraying device (2) are both arranged on the mobile operation platform (4).

5. The cleaning system of claim 3, wherein, The cleaning liquid spraying device (1) further comprises an atomizing mechanism connected with the cleaning liquid nozzle (11), and the atomizing mechanism is used for atomizing the cleaning liquid before providing it to the cleaning liquid nozzle (11). The atomizing mechanism comprises:

6. The cleaning system of claim 5, wherein, a compressed gas conveying assembly (12) for conveying compressed gas; 7. The cleaning system of claim 6, wherein, a cleaning liquid conveying assembly (13) for conveying the cleaning liquid; and an atomizer (14) with an inlet end communicating with the compressed gas conveying assembly (12) and the cleaning liquid conveying assembly (13), and an outlet end communicating with the cleaning liquid nozzle (11). The atomizer (14) comprises a mixing chamber (141) for mixing the compressed gas and the cleaning liquid; and / or The compressed gas conveying assembly (12) comprises:

8. The cleaning system of claim 7, wherein, a compressor (121) for compressing gas; and a compressed gas storage tank (122) communicating with the compressor (121) and the atomizer (14). The gas inlet direction of the compressed gas into the mixing chamber (141) is perpendicular to the liquid inlet direction of the cleaning liquid into the mixing chamber (141); and / or The cleaning liquid conveying assembly (13) comprises:

9. The cleaning system of claim 8, wherein, ​ ​ ​ a cleaning liquid storage tank (131) for storing the cleaning liquid; and a cleaning liquid driving member (132) for driving the cleaning liquid in the cleaning liquid storage tank (131) to be delivered to the atomizer (14).

10. The cleaning system of claim 9, wherein, An air inlet (145) for the compressed gas is arranged on one end wall of the mixing chamber (141), and an atomized liquid outlet (146) for the atomized cleaning liquid is arranged on the other end wall of the mixing chamber (141). The atomizer (14) further comprises an annular liquid inlet chamber (142) arranged around the mixing chamber (141) and outside the mixing chamber (141). A liquid inlet (144) of the liquid inlet chamber (142) is arranged on one end wall of the liquid inlet chamber (142). The liquid inlet chamber (142) and the mixing chamber (141) are in radial communication through a plurality of communication holes (143); and / or The cleaning liquid delivery assembly (13) further comprises a first flow detector (134) for detecting the flow of the cleaning liquid input to the atomizer (14).

11. The cleaning system of claim 10, wherein, The plurality of communication holes (143) are uniformly distributed on the peripheral wall of the mixing chamber (141).

12. The cleaning system of claim 7, wherein, The compressed gas delivery assembly (12) further comprises a second flow detector (126) for detecting the flow of the compressed gas input to the atomizer (14).

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