Automatic cleaning device for water film evaporative air conditioning cooling unit

Abstract

The present invention relates to an automatic cleaning device for a water film evaporative air conditioning cooling unit, which is installed on the air inlet side of a water film evaporative cooling module unit of the water film evaporative air conditioning cooling unit, and comprises a cleaning brush row with cleaning brushes, multiple horizontal slide grooves and a vertical slide groove; the cleaning brush row is fixed on a frame provided with gears, racks are arranged in the horizontal slide grooves and the vertical slide grooves, the gears on the cleaning brush row frame are inserted into the slide grooves and meshed with the racks, the gears are driven by an electric motor and drive the cleaning brush row to move along the horizontal or vertical slide grooves between each water film evaporative cooling module unit to complete automatic cleaning. The present invention solves the problem that the water film evaporative cooling module unit of the water film evaporative air conditioning cooling unit needs to be repeatedly disassembled and installed when manually cleaning, effectively reduces the intensity of cleaning work, and improves the efficiency of cleaning work.

Description

Technical Field

[0001] The invention belongs to the technical field of air conditioning and refrigeration, and in particular relates to an automatic cleaning device for a water film evaporation air conditioning cooling unit. Background Art

[0002] The core component of the water film evaporative air conditioning cooling unit is the water film evaporative cooling module unit. Each unit is composed of many groups of packing sheets densely packed at a certain distance. Although a modular structure is adopted, there are still problems such as a large number of modules and a heavy single module. Manual cleaning requires repeated disassembly and installation of the modules, which is laborious and time-consuming. According to the survey, for a water film evaporative air conditioning cooling unit with a cross-sectional size of 4 meters × 4 meters, it is necessary to disassemble and install about thirty or forty module units when cleaning the water film evaporative cooling module unit, and the weight of each module unit ranges from about ten kilograms to dozens of kilograms (related to the specifications of the packing module). If two cleaning workers work together, they can only clean one unit of equipment a day at most, with extremely low cleaning efficiency and extremely high work intensity. In order to reduce the work intensity, improve the cleaning efficiency, avoid repeated disassembly of the water film evaporative cooling module unit, and ensure the uniformity of cleaning standards, an intelligent fully automatic cleaning device is urgently needed. Summary of the invention

[0003] The purpose of the present invention is to provide an automatic cleaning device for a water film evaporative air conditioning cooling unit, so as to realize manual control and automatic cleaning of the equipment, solve the problem of repeated disassembly and installation, reduce the intensity of cleaning work, improve the efficiency of cleaning work, and effectively control the unification of cleaning standards (cleanliness of packing sheets of water film evaporative cooling modules), reduce the loss of packing sheets, and extend the life of the equipment.

[0004] The technical solution adopted by the present invention is:

[0005] The automatic cleaning device of the water film evaporative air conditioning cooling unit is characterized by:

[0006] The device is located inside the water film evaporative air conditioning cooling unit and is installed on the air inlet side of the water film evaporative cooling module unit, and includes a cleaning brush row with cleaning brushes, multiple horizontal slides and a vertical slide;

[0007] The cleaning brush row has a frame and gears are arranged on the frame. Racks are arranged in the horizontal slide groove and the vertical slide groove. The gears on the cleaning brush row frame are inserted into the slide groove and mesh with the racks. The gears are driven by an electric motor and drive the cleaning brush row to move between each water film evaporative cooling module unit.

[0008] The vertical slide is fixed on a side frame inside the water film evaporative air conditioning cooling unit and is installed vertically, and both ends of the multiple horizontal slides are respectively fixed on the two side frames inside the water film evaporative air conditioning cooling unit and are installed in parallel.

[0009] A cleaning brush fixing plate is arranged in the frame of the cleaning brush row, and a plurality of cleaning brushes are arranged in a matrix on the surface of the cleaning brush fixing plate;

[0010] The cleaning brush is glued to the shaft sleeve, the shaft sleeve is installed and clamped on the rotating shaft, the rotating shaft and the rotating gear fastened at the bottom are integrated and fixed on the cleaning brush fixing plate, the shaft sleeve, the rotating shaft and the rotating gear constitute a cleaning brush rotating mechanism, and the rotating gear is driven by an electric motor to realize the rotation of the cleaning brush.

[0011] The cleaning brush fixing plate is threadedly connected with a plurality of brush fixing plate advancing screws fixed on the cleaning brush row frame through a plurality of threaded holes arranged at the four corners and edges of the cleaning brush fixing plate;

[0012] A pulley is arranged at the root of the brush fixing plate advancing screw, and an electric motor drives the brush fixing plate advancing screw to rotate through belt transmission to realize the overall advancement, retraction and removal of the cleaning brush fixing plate along the direction of airflow. A group of electric motors drives one or more brush fixing plate advancing screws.

[0013] The frame side of the cleaning brush row is fixed on the brush row shaft through a shaft sleeve. A set of brush row horizontal moving gears is arranged at the top of the brush row shaft, and a set of brush row rotating gears is arranged at the bottom. The gear surface of the brush row vertical moving gear is perpendicular to the cleaning brush row and fixed near the upper end of the outer side of the shaft sleeve.

[0014] The brush row horizontal moving gear, the brush row vertical moving gear and the brush row rotating gear are all driven by respective electric motors;

[0015] The brush row rotating gear is driven by an electric motor, which drives the brush row shaft to automatically rotate and clamp on the shaft sleeve. The vertical moving gear of the brush row just bites into the vertical slide groove, and the cleaning brush row rotates at an angle of 90°.

[0016] The brush row horizontal moving gear is driven by an electric motor. After it is rotated and inserted into the horizontal slide and engaged, it can move horizontally left and right along the horizontal slide.

[0017] The vertical moving gear of the brush row is driven by an electric motor. After being rotated, inserted into the vertical slide slot and engaged, the brush row can move vertically up and down along the vertical slide slot.

[0018] A plurality of travel position triggers are arranged on the paths of the horizontal chute and the vertical chute.

[0019] A horizontal water spray pipe is arranged on the top edge of the frame of the cleaning brush row, and a row of downward water spray nozzles are arranged on the water spray pipe. One end of the water spray pipe is connected downward from the side of the frame of the cleaning brush row to a metal hose for conveying water at the bottom.

[0020] A horizontal detergent supply pipe is arranged below the water spray pipe on the top edge of the cleaning brush row frame. A row of downward detergent adding nozzles are arranged on the detergent supply pipe. One end of the detergent supply pipe is connected downward from the side of the cleaning brush row frame to the detergent storage tank at the bottom.

[0021] The present invention has the following advantages:

[0022] (1) The present invention uses a cleaning brush to automatically clean the packing sheet of the water film evaporative cooling module, thereby reducing work intensity, saving cleaning time, improving cleaning efficiency, and saving operating and maintenance costs. At the same time, it avoids repeated disassembly and installation of the water film evaporative cooling module unit, thereby extending the service life of the packing.

[0023] (2) The present invention adopts an integral modular structural design and a cleaning brush row adopts a rotating shaft structure, which saves space and is convenient to move; the cleaning brush adopts an automatic rotation and contact with the filler sheet for cleaning, and adopts a small area modular cleaning method, which effectively ensures the cleaning effect while achieving the uniformity of cleaning standards; a moving mechanism that can move up and down and left and right is adopted, which reduces the loss and failure of cleaning components (cleaning brush, detergent addition nozzle, water spray nozzle), and improves the reliability and safety of the automatic cleaning device.

[0024] (3) The present invention uses a metal hose to connect the water spray pipe and the detergent storage tank respectively, so as to provide cleaning water and detergent for the automatic cleaning device, facilitate the free movement of the automatic cleaning device, and realize the flexibility of the automatic cleaning device.

[0025] (4) The present invention adopts a PLC control cabinet to control the automatic operation of the cleaning device, artificial intelligence to set the brushing and flushing time and arbitrarily select the cleaning module unit, and the intelligent control operation combined with man and machine to achieve the optimization of the equipment cleaning effect and the loss of the automatic cleaning mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural diagram of the present invention.

[0027] Figure 2 This is the structural diagram of the cleaning brush row.

[0028] In the figure, 1-water film evaporative air conditioning cooling unit, 2-water film evaporative cooling module unit, 3-cleaning brush row, 4-brush row rotating shaft, 5-horizontal slide, 6-vertical slide, 7-stroke position trigger, 8-cleaning brush, 9-cleaning brush fixing plate, 10-cleaning brush rotating mechanism, 11-brush row horizontal moving gear, 12-brush row vertical moving gear, 13-brush row rotating gear, 14-detergent supply pipe, 15-detergent adding nozzle, 16-detergent storage tank, 17-water spray pipe, 18-water spray nozzle, 19-metal hose, 20-brush fixing plate pushing screw. DETAILED DESCRIPTION

[0029] The present invention is described in detail below in conjunction with specific implementation modes.

[0030] The present invention relates to an automatic cleaning device for a water film evaporative air conditioning cooling unit. The device is installed on the air inlet side of a water film evaporative cooling module unit 2 of a water film evaporative air conditioning cooling unit 1, and comprises a cleaning brush row 3 with a cleaning brush 8, a plurality of horizontal slide grooves 5 and a vertical slide groove 6. The vertical slide groove 6 is fixed on a side frame inside the water film evaporative air conditioning cooling unit 1 and is vertically installed. The two ends of the plurality of horizontal slide grooves 5 are respectively fixed on the two side frames inside the water film evaporative air conditioning cooling unit 1 and are parallelly installed. The cleaning brush row 3 has a frame and a gear is arranged on the frame. The horizontal slide groove 5 and the vertical slide groove 6 are both provided with a rack opening. The gear on the cleaning brush row 3 frame is inserted into the slide groove and meshed with the rack. The gear is driven by an electric motor and drives the cleaning brush row 3 to move between each water film evaporative cooling module unit 2 to complete the cleaning.

[0031] A cleaning brush fixing plate 9 is provided in the frame of the cleaning brush row 3, and a plurality of cleaning brushes 8 are arranged in a matrix on the plate surface of the cleaning brush fixing plate 9. The cleaning brush 8 is fixed to the shaft sleeve, which is installed and clamped on the rotating shaft. The rotating shaft and the rotating gear at the bottom are integrated and fixed to the cleaning brush fixing plate 9. The shaft sleeve, the rotating shaft and the rotating gear constitute a cleaning brush rotating mechanism 10, and the rotating gear is driven by an electric motor to realize the rotation of the cleaning brush 8. If the cleaning brush 8 needs to be replaced due to wear and tear, adjustment of the large diameter brush, or adjustment of the brush length, it can be replaced by simply pulling out the brush and the shaft sleeve fixing the brush from the rotating shaft as a whole.

[0032] The cleaning brush fixing plate 9 is threadedly connected with multiple groups of brush fixing plate advancing screws 20 fixed on the cleaning brush row frame through multiple groups of threaded holes arranged at the four corners and edges of the brush fixing plate. A pulley is arranged at the root of the brush fixing plate advancing screw 20. The electric motor drives the brush fixing plate advancing screw 20 to rotate through a belt drive to realize the overall advancement or retraction of the cleaning brush fixing plate 9 along the airflow direction. Similarly, if the cleaning brush fixing plate 9 needs to be removed from the frame of the cleaning brush row 3 as a whole, it only needs to be rotated until the brush fixing plate advancing screw 20 is completely separated from the threaded holes on the brush fixing plate. In combination with the space of the cleaning brush row 3 frame, it can be considered that one or more brush fixing plate advancing screws 20 are driven by a group of electric motors.

[0033] The frame side of the cleaning brush row 3 is fixed on the brush row rotating shaft 4 through a shaft sleeve. A set of brush row rotating gears 13 are set at the bottom of the brush row rotating shaft 4. The brush row rotating gears 13 are driven by an electric motor. When the brush row rotating shaft 4 is automatically rotated and clamped on the shaft sleeve, it rotates exactly 90 degrees, and the brush row vertical moving gear 12 can also just bite into the vertical slide groove 6. A set of brush row horizontal moving gears 11 are set at the top of the brush row rotating shaft 4. The brush row horizontal moving gears 11 are driven by an electric motor. After rotating and inserting into the horizontal slide groove 5 and biting, they move horizontally left and right along the horizontal slide groove 5, thereby driving the cleaning brush row 3 to move horizontally. The surface of the brush row vertical moving gear 12 is perpendicular to the cleaning brush row 3 and is fixed near the upper end of the outer side of the shaft sleeve. The brush row vertical moving gear 12 is also driven by an electric motor. After rotating and inserting into the vertical slide groove 6 and biting, it can move vertically up and down along the vertical slide groove 6, thereby driving the cleaning brush row 3 to move up and down. A plurality of travel position triggers 7 are arranged on the paths of the horizontal slide 5 and the vertical slide 6 to feedback arrival signals when the cleaning device moves horizontally left and right and vertically up and down to a certain position.

[0034] A horizontal water spray pipe 17 is provided on the top edge of the frame of the cleaning brush row 3, and a row of downward water spray nozzles 18 are provided on the water spray pipe 17. One end of the water spray pipe 17 is connected downward from the side of the frame of the cleaning brush row 3 to a metal hose 19 for water supply at the bottom, and is connected to external tap water.

[0035] A horizontal detergent supply pipe 14 is arranged below the water spray pipe 17 on the top edge of the frame of the cleaning brush row 3. A row of downward detergent adding nozzles 15 are arranged on the detergent supply pipe 14. One end of the detergent supply pipe 14 is connected downward from the side edge of the frame of the cleaning brush row 3 to the detergent storage tank 16 at the bottom.

[0036] When the external dimensions of the present invention are designed, the specifications and dimensions are matched with the water film evaporative cooling module unit 2. The number of columns of the cleaning brush 8 is determined according to the number of filler sheets of the water film evaporative cooling module, and the number of rows of the cleaning brush 8 is determined according to the number of troughs of each filler sheet. The diameter of the cleaning brush 8 is preferably sufficient to fill the trough gap between two filler sheets. The effective length of the cleaning brush 8 is determined in combination with the air quality (air cleanliness) of the application place of the water film evaporative air conditioning cooling unit 1. If the treated air is relatively clean, the brush length is sufficient to brush the filler sheets within the windward contact surface. As the treated air becomes dirtier, the brush length increases appropriately, and the longest should not exceed 1 / 2 of the filler thickness of the water film evaporative cooling module unit 2.

[0037] The present invention can be controlled as a whole by an externally arranged PLC control cabinet, which is independent of the combined water film evaporative air conditioning cooling unit 1. The working process of the overall device is as follows:

[0038] When dust or scaling occurs on the packing sheet of the water film evaporative cooling module and needs to be cleaned, the maintenance personnel will use the PLC control cabinet on site to set the brushing and flushing time according to the degree of dust or scaling, select whether to add detergent during the cleaning process, and set the cleaning sequence. When everything is ready, start the automatic cleaning device to start the automatic cleaning work.

[0039] Automatic cleaning working procedures:

[0040] The first step is to adjust the state of the cleaning brush row 3: that is, the PLC control cabinet gives the cleaning brush row 3 a forward rotation instruction, and the cleaning brush row 3 is driven by the electric motor to drive the brush row rotating gear 13 from the original state (parallel to the packing sheet of the water film evaporative cooling module unit 2, fixed to the side wall of the water film evaporative air conditioning cooling unit 1) to drive the brush row rotating shaft 4 and the cleaning brush row 3 to rotate 90° as a whole, so that it turns to the initial working state (vertical to the packing sheet of the water film evaporative cooling module unit 2, the cleaning brush 8 is parallel to the packing sheet);

[0041] The second step (whether to execute this step is determined according to the needs) is to add detergent to the cleaning brush 8: it is specifically executed by the established program instructions of the PLC control cabinet, that is, the PLC control cabinet issues a start instruction for the brush rotating gear to rotate at a low speed, driving the cleaning brush 8 to automatically rotate at a slow speed to prepare for adding detergent. At the same time, the PLC control cabinet sends a control signal control instruction to the detergent storage tank 16, and the detergent storage tank 16 presses out the detergent to provide detergent to each cleaning brush 8 in the top row of the cleaning brush row 3 through the detergent supply pipe 14 and the detergent adding nozzle 15. After all the cleaning brushes 8 are evenly covered with detergent, the PLC control cabinet issues a command to stop the rotation of the cleaning brush 8, and the detergent addition is completed;

[0042] The third step is to prepare for brushing: the PLC control cabinet issues an instruction to advance the cleaning brush fixing plate 9 as a whole in the direction of the airflow, that is, the electric motor drives the pulley at the root of the brush fixing plate advancing screw 20 to drive the brush fixing plate advancing screw 20 to withdraw along the threaded hole on the fixing plate, and advance the cleaning brush fixing plate 9 as a whole, so that the cleaning brush 8 on the cleaning brush fixing plate 9 slowly enters the interior of the water film evaporative cooling module filler sheet;

[0043] The fourth step is to start brushing: the PLC control cabinet issues a start command for the brush rotating gear to rotate, driving the cleaning brush 8 to automatically rotate and brush the water film evaporative cooling module filler sheet. After the preset brushing time ends, the brushing is automatically completed;

[0044] The fifth step is automatic flushing: the PLC control cabinet issues a flushing command to open the electric valve on the main pipe of the water spray pipe 17, control the cleaning water to spray to the filler through the metal hose 19 and the water spray pipe 17 to the water spray nozzle 18, and restart the cleaning brush 8 to automatically rotate and flush the filler sheet. After the preset flushing time ends, the automatic flushing is completed;

[0045] Step 6 (reverse execution of step 3), the cleaning brush leaves the packing sheet: the PLC control cabinet issues an exit command, and the cleaning brush fixing plate 9 and the cleaning brush 8 as a whole exit the packing sheet of the water film evaporative cooling module unit 2 in the reverse direction of the air flow and return to the initial working state of the first step. At this point, the automatic cleaning process of a water film evaporative cooling module unit 2 is completely completed.

[0046] When the first water film evaporative cooling module unit 2 is cleaned, if the next water film evaporative cooling module unit 2 in the row is to be cleaned, the PLC control cabinet will issue a command for the cleaning brush row 3 to move horizontally left and right, that is, the electric motor drives the brush row horizontal movement gear 11 to move horizontally left and right along the horizontal slide groove 5 to the specified module position. After the stroke position trigger 7 feeds back a signal in place, it indicates that the automatic cleaning device meets the requirements for continuing automatic cleaning, and the above-mentioned first to sixth steps of the cleaning process can be started.

[0047] Repeat the above process until the last water film evaporative cooling module unit 2 of the row is cleaned. After the cleaning is completed, the PLC control cabinet issues a reverse movement command for the cleaning brush row 3, and moves the cleaning brush row 3 back to the starting position of the row (the side close to the vertical slide 6). The PLC control cabinet continues to issue a vertical movement command for the cleaning brush row 3, that is, the electric motor drives the brush row vertical movement gear 12 to rotate and insert into the vertical slide 6 and engage, and then moves vertically up and down along the vertical slide 6 to the specified module position. After the stroke position trigger 7 feedbacks the in-place signal, the electric motor drives the brush row horizontal movement gear 11 to rotate and insert into the horizontal slide 5 and engage, and continues to adjust the position along the horizontal slide 5 until the stroke position trigger 7 feedbacks the in-place signal, and then starts to repeat the above cleaning procedure to clean the water film evaporative cooling module unit 2 of another row.

[0048] After all the water film evaporative cooling module units 2 are cleaned, the reverse movement instruction program is used to make the cleaning brush row 3 return to the initial working state of the first step, and then the reverse rotation instruction is used to make the cleaning brush row 3 rotate 90 degrees in the opposite direction at the brush row rotating gear 13 at the top of the brush row shaft 4 to restore to the original state of the first step, so that the frame of the cleaning brush row 3 is fixed to the side wall of the water film evaporative air conditioning cooling unit 1.

[0049] The control instructions of the aforementioned steps can be automatically issued by the PLC control cabinet according to the pre-programmed program. If any module is manually selected for cleaning, except for the automatic cleaning work procedures of the first to sixth steps mentioned above which are completed by PLC automatic control, other work procedures can be completed manually on-site on the touch screen of the PLC control cabinet, or they can be automatically controlled after programming.

[0050] The content of the present invention is not limited to the embodiments listed, and any equivalent changes (including changes in the driving mode of the action components) made to the technical solution of the present invention by ordinary technicians in this field after reading the specification of the present invention are covered by the claims of the present invention.

Claims

1. Automatic cleaning method for water film evaporative air conditioning cooling unit, characterized in that: The device used in the method is located inside a water film evaporative air conditioning cooling unit (1) and is installed on the air inlet side of a water film evaporative cooling module unit (2), comprising a cleaning brush row (3) having a cleaning brush (8), a plurality of horizontal slide grooves (5) and a vertical slide groove (6); The cleaning brush row (3) has a frame and a gear is arranged on the frame. A rack is arranged in each of the horizontal slide groove (5) and the vertical slide groove (6). The gear on the cleaning brush row (3) frame is inserted into the slide groove and meshes with the rack. The gear is driven by an electric motor and drives the cleaning brush row (3) to move between each water film evaporative cooling module unit (2). A cleaning brush fixing plate (9) is arranged in the frame of the cleaning brush row (3), and a plurality of cleaning brushes (8) are arranged in a matrix on the surface of the cleaning brush fixing plate (9); The cleaning brush (8) is glued to the shaft sleeve, which is installed and clamped on the rotating shaft. The rotating shaft and the rotating gear fastened at the bottom are integrated and fixed on the cleaning brush fixing plate (9). The shaft sleeve, the rotating shaft and the rotating gear constitute a cleaning brush rotating mechanism (10). The rotating gear is driven by an electric motor to realize the rotation of the cleaning brush (8). The cleaning brush fixing plate (9) is threadedly connected to a plurality of brush fixing plate advancing screws (20) fixed to the cleaning brush row frame via a plurality of threaded holes arranged at the four corners and edges of the cleaning brush fixing plate (9); A belt pulley is provided at the root of the brush fixing plate advancing screw (20), and an electric motor drives the brush fixing plate advancing screw (20) to rotate through a belt transmission to achieve the overall advancement, retraction and removal of the cleaning brush fixing plate (9) along the direction of the air flow, and a group of electric motors drives one or more brush fixing plate advancing screws (20); The frame side of the cleaning brush row (3) is fixed to the brush row rotating shaft (4) through a shaft sleeve; a group of brush row horizontal moving gears (11) are provided at the top of the brush row rotating shaft (4); a group of brush row rotating gears (13) are provided at the bottom; the gear surface of the brush row vertical moving gear (12) is perpendicular to the cleaning brush row (3) and is fixed near the upper end of the outer side of the shaft sleeve; The brush row horizontal moving gear (11), the brush row vertical moving gear (12) and the brush row rotating gear (13) are all driven by respective electric motors; The brush row rotating gear (13) is driven by an electric motor to drive the brush row rotating shaft (4) to automatically rotate and clamp on the shaft sleeve, and the brush row vertical moving gear (12) just bites into the vertical slide groove (6), and the cleaning brush row (3) rotates at an angle of 90°; The brush row horizontal moving gear (11) is driven by an electric motor, and after being rotated and inserted into the horizontal slide groove (5) and engaged, it can move horizontally left and right along the horizontal slide groove (5); The brush row vertical moving gear (12) is driven by an electric motor, and after being rotated and inserted into the vertical slide groove (6) and engaged, it can move vertically up and down along the vertical slide groove (6); The method comprises the following steps: The first step: adjusting the state of the cleaning brush row (3): that is, the PLC control cabinet gives the cleaning brush row (3) a forward rotation instruction, and the cleaning brush row (3) is changed from the original state: parallel to the packing sheet of the water film evaporative cooling module unit (2), fixed to the side wall of the water film evaporative air conditioning cooling unit (1), and the brush row rotating gear (13) is driven by an electric motor to drive the brush row rotating shaft (4) and the cleaning brush row (3) to rotate 90 degrees as a whole, so that it turns to the initial working state: perpendicular to the packing sheet of the water film evaporative cooling module unit (2), and the cleaning brush (8) is parallel to the packing sheet; Step 2: adding detergent to the cleaning brush (8): specifically, the step is executed by a predetermined program instruction of the PLC control cabinet, that is, the PLC control cabinet issues a start instruction for the brush rotating gear to rotate at a low speed, driving the cleaning brush (8) to automatically rotate at a slow speed to prepare for adding detergent. At the same time, the PLC control cabinet issues a control signal control instruction to the detergent storage tank (16), and the detergent storage tank (16) presses out the detergent to provide detergent to each cleaning brush (8) in the top row of the cleaning brush row (3) through the detergent supply pipe (14) and the detergent adding nozzle (15). After all the cleaning brushes (8) are evenly covered with the detergent, the PLC control cabinet issues a command for the cleaning brush (8) to stop rotating, and the addition of detergent is completed. Step 3: Prepare for brushing, i.e. the PLC control cabinet issues a command to advance the cleaning brush fixing plate (9) as a whole in the direction of the airflow, i.e. the electric motor drives the pulley at the root of the brush fixing plate advancing screw (20) to drive the brush fixing plate advancing screw (20) to withdraw along the threaded hole on the fixing plate, and advance the cleaning brush fixing plate (9) as a whole, so that the cleaning brush (8) on the cleaning brush fixing plate (9) slowly enters the interior of the water film evaporative cooling module filler sheet; Step 4: Start scrubbing, i.e. the PLC control cabinet issues a start command for the brush rotating gear to rotate, driving the cleaning brush (8) to automatically rotate and scrub the water film evaporative cooling module filler sheet. After the preset scrubbing time ends, the scrubbing is automatically completed. Step 5: Automatic flushing, i.e., the PLC control cabinet issues a flushing command, opens the electric valve provided on the main pipe of the water spray pipe (17), controls the cleaning water to be sprayed toward the packing through the metal hose (19), the water spray pipe (17) to the water spray nozzle (18), and restarts the cleaning brush (8) to automatically rotate and flush the packing sheet. After the preset flushing time ends, the automatic flushing is completed; Step 6: Execute step 3 in reverse order, and the cleaning brush leaves the packing sheet: that is, the PLC control cabinet issues an exit command, and the cleaning brush fixing plate (9) and the cleaning brush (8) as a whole exit the packing sheet of the water film evaporative cooling module unit (2) in the reverse direction of the air flow and return to the initial working state of the first step; at this point, the automatic cleaning process of one water film evaporative cooling module unit (2) is completely completed; When the first water film evaporative cooling module unit (2) is cleaned, if the next water film evaporative cooling module unit (2) in the row is to be cleaned, the PLC control cabinet issues a command for the cleaning brush row (3) to move horizontally left and right, i.e., the electric motor drives the brush row horizontal moving gear (11) to move horizontally left and right along the horizontal slide groove (5) to the designated module position. After the stroke position trigger (7) feeds back a signal in place, it indicates that the automatic cleaning device meets the requirements for continuing automatic cleaning, and the above-mentioned first to sixth steps of the cleaning process can be started; The above process is repeated in sequence until the last water film evaporative cooling module unit (2) of the row is cleaned. After the cleaning is completed, the PLC control cabinet issues a reverse movement command for the cleaning brush row (3), and moves the cleaning brush row (3) back to the starting position of the row; the PLC control cabinet continues to issue a vertical movement command for the cleaning brush row (3), that is, the electric motor drives the brush row vertical movement gear (12) to rotate and insert into the vertical slide groove (6) and engage, and then moves vertically up and down along the vertical slide groove (6) to the specified module position. After the stroke position trigger (7) feeds back a signal of in-position, the electric motor drives the brush row horizontal movement gear (11) to rotate and insert into the horizontal slide groove (5) and engage, and continues to adjust the position along the horizontal slide groove (5) until the stroke position trigger (7) feeds back a signal of in-position, and then starts to repeat the above cleaning procedure to clean the water film evaporative cooling module unit (2) of another row; After all the water film evaporative cooling module units (2) have been cleaned, the cleaning brush row (3) is returned to the initial working state of the first step through a reverse movement instruction program, and then the cleaning brush row (3) is restored to the original state of the first step after the brush row rotating gear (13) at the top of the brush row rotating shaft (4) is reversely rotated 90 degrees through a reverse rotation instruction, so that the frame of the cleaning brush row (3) is fixedly attached to the side wall of the water film evaporative air conditioning cooling unit (1).

2. The automatic cleaning method of the water film evaporative air conditioning cooling unit according to claim 1 is characterized in that: The vertical slide groove (6) is fixed on a side frame inside the water film evaporative air conditioning cooling unit (1) and is installed vertically, and the two ends of the multiple horizontal slide grooves (5) are respectively fixed on the two side frames inside the water film evaporative air conditioning cooling unit (1) and are installed in parallel.

3. The automatic cleaning method of the water film evaporative air conditioning cooling unit according to claim 1 is characterized in that: A plurality of travel position triggers (7) are arranged on the paths of the horizontal slide groove (5) and the vertical slide groove (6).

4. The automatic cleaning method of a water film evaporative air conditioning cooling unit according to claim 1 is characterized in that: A horizontal water spray pipe (17) is arranged at the top edge of the frame of the cleaning brush row (3), and a row of downward water spray nozzles (18) are arranged on the water spray pipe (17). One end of the water spray pipe (17) is connected downward from the side edge of the frame of the cleaning brush row (3) to a metal hose (19) at the bottom for conveying water.

5. The automatic cleaning method of the water film evaporative air conditioning cooling unit according to claim 4 is characterized in that: A horizontal detergent supply pipe (14) is arranged below the water spray pipe (17) at the top edge of the frame of the cleaning brush row (3), and a row of downward detergent adding nozzles (15) are arranged on the detergent supply pipe (14). One end of the detergent supply pipe (14) is connected downward from the side edge of the frame of the cleaning brush row (3) to a detergent storage tank (16) at the bottom.

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