Cleaning equipment for air conditioner coil unit

Abstract

The utility model relates to the technical field of air conditioner cleaning, in particular to cleaning equipment for an air conditioner coil unit. Cleaning equipment for an air conditioner coil unit comprises a shell, and a surface air cooler and a spraying assembly are arranged in the shell. A water collecting assembly is arranged outside the shell and comprises a fixed water collecting tank and a movable water collecting tank; the fixed water collecting tank is fixedly arranged outside the shell, and a drainage pipe is communicated between the fixed water collecting tank and the shell; the fixed water collecting tank is of a bottom opening structure, a baffle is rotationally arranged at the bottom opening of the fixed water collecting tank, and a torsional spring is arranged between the baffle and the fixed water collecting tank; the movable water collecting tank is arranged below the fixed water collecting tank, the movable water collecting tank is of a structure with an opening in the top, and the movable water collecting tank is detachably connected to the fixed water collecting tank; the device further comprises a landing assembly which drives the movable water collecting tank to move vertically. According to the device, waste liquid can be cleaned in time, and floccules in the movable water collecting tank can be thoroughly cleaned.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning cleaning, and in particular to a cleaning device for an air conditioning coil unit. Background Art

[0002] As the most common temperature control device, fan coil air conditioners have been widely used in various occasions. However, fan coil air conditioners will be polluted by dust in the air during long-term use, causing air conditioning performance to decline, thereby affecting the use of air conditioning and increasing energy consumption. In order to ensure the normal operation of the air conditioner and avoid affecting human health, the air conditioner must be cleaned regularly.

[0003] Some air-conditioning fan coil units are installed in the ceiling of the room. The current common cleaning method is to disassemble the fan coil to the ground and then clean it manually. This cleaning method is time-consuming and labor-intensive, and will cause damage to the fan coil unit itself, resulting in poor sealing of the unit, leading to air leakage and many other disadvantages.

[0004] In order to solve the above drawbacks, Chinese patent application number 201721108596.2 discloses a concealed fan coil unit with a built-in cleaning device, in which a cleaning device is arranged inside the fan coil unit, and the sewage after cleaning falls into the condensate water tray and is discharged to the drain through the condensate water pipe to complete the cleaning. When cleaning, there is no need to remove the fan coil unit from the ceiling, and the fan coil unit can be cleaned in the ceiling, which saves time and effort, and does not damage the sealing of the unit structure.

[0005] The above-mentioned related technologies have the following defects: the sewage after cleaning will contain flocculent substances such as dust, which will adhere to the condensation water tray and cannot be discharged with the sewage, and then dry and solidify in the condensation water tray, and even emit a bad smell. Utility Model Content

[0006] In order to improve cleaning efficiency and save labor, the present application provides a cleaning device for an air conditioning coil unit, which adopts the following technical solution.

[0007] A cleaning device for an air conditioning coil unit comprises a shell, a surface cooler and a spray assembly are arranged in the shell; a water collecting assembly is arranged outside the shell, and the water collecting assembly comprises a fixed water collecting tank and a movable water collecting tank; the fixed water collecting tank is fixedly arranged outside the shell, and a drainage pipe is connected between the fixed water collecting tank and the shell; the fixed water collecting tank is a structure with an opening at the bottom, a baffle is rotatably arranged at the bottom opening of the fixed water collecting tank, and a torsion spring is arranged between the baffle and the fixed water collecting tank; the movable water collecting tank is arranged below the fixed water collecting tank, the movable water collecting tank is a structure with an opening at the top, and the movable water collecting tank is detachably connected to the fixed water collecting tank;

[0008] It also includes a descending assembly, which drives the mobile water collecting tank to move vertically.

[0009] By adopting the above technical solution, when cleaning is required, the surface cooler is cleaned by spraying cleaning liquid into the shell through the spray assembly; the cleaning waste liquid accumulates in the shell, and then flows into the fixed water collecting tank along the drain pipe. As the waste liquid in the fixed water collecting tank accumulates more and more, the baffle rotates under the pressure of the waste liquid, so that the waste liquid is poured into the mobile water collecting tank, and then the baffle is reset under the action of the torsion spring. The fixed water collecting tank continues to collect waste liquid. At this time, the mobile water collecting tank can be separated from the fixed water collecting tank according to actual needs, and the mobile water collecting tank can be lowered to the ground for cleaning through the landing assembly, or it can be cleaned after collecting some more waste liquid. The setting of the mobile water collecting tank can clean the waste liquid in time, and can expand the collection volume of waste liquid to a certain extent.

[0010] Furthermore, a plurality of positioning blocks are fixedly provided on the two side walls of the movable water collecting tank, and a plurality of receiving blocks corresponding to the positioning blocks are fixedly provided on the fixed water collecting tank; an installation groove is provided on one side of the shell close to the fixed water collecting tank, and a plurality of through grooves penetrating downwardly through the shell are provided in the installation groove; the through grooves and the receiving blocks are staggered.

[0011] By adopting the above technical solution, the positioning block overlaps the receiving block and the inner wall of the installation groove to realize the connection between the mobile water collecting tank and the fixed water collecting tank. When the mobile water collecting tank needs to be disassembled, the mobile water collecting tank is moved so that the positioning block and the receiving block are staggered and opposite to the through groove, and the mobile water collecting tank can be lowered by moving downward. When installing the water collecting tank again, it is only necessary to raise the mobile water collecting tank to the top of the receiving block, and then move the mobile water collecting tank horizontally so that the positioning block and the receiving block overlap, which is simple and quick.

[0012] Furthermore, the landing assembly includes a mounting plate, a displacement tube, a bidirectional screw and a guide rod; the displacement tube is vertically arranged on the mounting plate, the bidirectional screw is threadedly connected to the displacement tube, and the guide rod is fixedly connected to the mounting plate; connecting plates are fixedly arranged on both sides of the mobile water collecting tank, the bidirectional screw is threadedly connected to one of the connecting plates, and the guide rod is vertically slidably connected to the other connecting plate.

[0013] By adopting the above technical solution, the air conditioning coil unit is installed in the ceiling, and the mobile water collecting tank is also located in the ceiling, while the descending assembly can be stored separately. When it is needed, the descending assembly is moved to the set position, and the bidirectional lead screw is rotated, and the bidirectional lead screw moves upward until it is threadedly connected to a connecting plate, and then the guide rod is extended to slide and connect with another connecting plate. In this process, due to the limiting effect of the installation groove, the mobile water collecting tank cannot move upward, and the connection between the bidirectional lead screw and the connecting plate is successfully completed. Then move the installation plate so that the ground positioning and the receiving block are misaligned, and then rotate the bidirectional lead screw in the opposite direction, and the mobile water collecting tank descends along the bidirectional lead screw.

[0014] Furthermore, the inner side of the bottom wall of the shell gradually extends downward from the middle toward the drain pipe.

[0015] By adopting the above technical solution, the inclined bottom wall of the shell allows the waste liquid accumulated in the shell to be discharged smoothly.

[0016] Furthermore, a pushing assembly is arranged outside the fixed water collecting tank, and the pushing assembly includes a push rod, a rotating rod and a driving rod; one end of the push rod is located in the fixed water collecting tank, and the push rod is vertically slidably connected to the fixed water collecting tank; the driving rod is vertically slidably arranged relative to the fixed water collecting tank, and the driving rod is located above the bidirectional screw; the rotating rod is horizontally rotatably connected to the fixed water collecting tank, and the two ends of the rotating rod are respectively rotatably connected to the push rod and the driving rod.

[0017] By adopting the above technical solution, if the waste liquid collected in the fixed water collecting tank for the last time is not enough to make the baffle rotate, then continue to rotate the two-way screw upward, the two-way screw pushes the driving rod upward, the driving rod drives one end of the rotating rod to rise and the other end to fall, the descending end pushes the push rod to descend, and the push rod pushes the baffle to rotate.

[0018] Furthermore, the gravity of the driving rod is greater than that of the push rod, that is, in a natural state, the rotating rod is inclined downward near one end of the driving rod.

[0019] By adopting the above technical solution, after the bidirectional lead screw is retracted, the driving rod can be automatically reset under the action of gravity.

[0020] Furthermore, a fixing plate is arranged outside the movable water collecting tank, and the fixing plate abuts against the bottom of the driving rod to limit the upper limit of the downward movement of the driving rod; a through hole is opened on the fixing plate, and the bidirectional lead screw can pass through the through hole.

[0021] By adopting the above technical solution, the fixing plate bears the load of the driving rod, so that the gravity of the driving rod is mainly dispersed on the fixing plate, reducing the force on the rotating shaft of the rotating rod, thereby reducing the probability of deformation and damage of the rotating shaft of the rotating rod.

[0022] Furthermore, universal wheels are provided at the bottom of the mounting plate.

[0023] By adopting the above technical solution, the landing assembly is moved in one direction.

[0024] Furthermore, the spray assembly includes a spray pipe, a spray head and a connecting pipe. The spray pipe is arranged in the shell, the spray head is connected to the spray pipe, and the connecting pipe connects the spray pipe with the cleaning liquid.

[0025] Furthermore, two branch pipes are arranged at one end of the connecting pipe away from the spray pipe.

[0026] By adopting the above technical solution, the connecting pipe is a hose, and its length can reach the ground. When cleaning, the connecting pipe is removed from the ceiling. One of the two branches of the connecting pipe is connected to the cleaning liquid, and the other is connected to the hot air blower. After cleaning, it can be dried by hot air.

[0027] In summary, this application has the following beneficial effects:

[0028] The surface cooler is cleaned by spraying cleaning liquid into the shell through the spray assembly; the cleaned waste liquid drain pipe flows into the fixed water collecting tank. As the waste liquid in the fixed water collecting tank accumulates more and more, the baffle rotates under the pressure of the waste liquid, causing the waste liquid to pour into the mobile water collecting tank, and then the baffle is reset under the action of the torsion spring. The fixed water collecting tank continues to collect waste liquid. The mobile water collecting tank is lowered to the ground for cleaning through the landing assembly, which can clean the waste liquid in time, expand the collection volume of waste liquid to a certain extent, and thoroughly clean the flocs in the mobile water collecting tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0030] Figure 2 It is a structural schematic diagram of another angle of the embodiment of the present application;

[0031] Figure 3 is a cross-sectional view showing the interior of the housing according to an embodiment of the present application;

[0032] Figure 4 is a cross-sectional view of the interior of a mobile water collecting tank according to an embodiment of the present application;

[0033] Figure 5 This is a schematic diagram showing the structure of a mobile water collecting tank in an embodiment of the present application;

[0034] Figure 6 The embodiment of the present application is a schematic diagram showing the structure of the receiving block and the installation groove.

[0035] In the figure, 1, shell; 11, surface cooler; 12, mounting groove; 13, through groove; 14, drain pipe; 2, spray pipe; 21, spray head; 22, connecting pipe; 221, branch pipe; 3, fixed water collecting tank; 31, baffle; 32, torsion spring; 33, receiving block; 34, slide; 35, top plate; 4, mobile water collecting tank; 41, positioning block; 42, connecting plate; 43, fixed plate; 431, through hole; 5, landing assembly; 51, mounting plate; 511, universal wheel; 52, displacement tube; 53, bidirectional screw; 54, guide rod; 6, pushing assembly; 61, push rod; 62, rotating rod; 63, driving rod. DETAILED DESCRIPTION

[0036] The present application is further described in detail below in conjunction with the accompanying drawings.

[0037] Combination Figure 1-3A cleaning device for an air conditioning coil unit includes a shell 1, in which a surface cooler 11 and a spray component for spraying and cleaning the surface cooler 11 are arranged; a water collecting component for collecting cleaning waste liquid is arranged outside the shell 1, and the cleaning waste liquid is collected and cleaned in time, and the flocs in the water collecting component can be thoroughly cleaned.

[0038] Combination Figure 1-Figure 3 The spray assembly includes a spray pipe 2, a plurality of spray heads 21 and a connecting pipe 22. The spray pipe 2 is fixedly arranged in the shell 1, and the spray pipe 2 is located above the surface cooler 11. A plurality of spray heads 21 are connected and arranged on the spray pipe 2. One end of the connecting pipe 22 is connected to the spray pipe 2, and the other end of the connecting pipe 22 is connected to two branch pipes 221, and valves are arranged on the two branch pipes 221 (not shown in the figure). The connecting pipe 22 is a hose. When not in use, it is stored in the ceiling. When cleaning is required, the connecting pipe 22 is removed, one branch pipe 221 is connected to the cleaning box, and the other branch pipe 221 is connected to the hot air blower. The cleaning liquid is passed into the connecting pipe 22 through a water pump to rinse the surface cooler 11. After cleaning, the hot air blower will be started to transport hot air into the spray pipe 2 through the connecting pipe 22 to dry the shell 1.

[0039] Combination Figure 2 and Figure 3-Figure 4 The water collecting assembly includes a fixed water collecting tank 3 and a mobile water collecting tank 4. There are two groups of water collecting assemblies, and the two groups of water collecting assemblies are respectively arranged at both ends of the shell 1. The fixed water collecting tank 3 is fixedly arranged outside the shell 1, and a drainage pipe 14 is connected between the fixed water collecting tank 3 and the shell 1; the fixed water collecting tank 3 is a structure with an opening at the bottom, and a baffle 31 is rotatably arranged at the bottom opening of the fixed water collecting tank 3, and a torsion spring 32 is arranged between the baffle 31 and the fixed water collecting tank 3. When there is no external force, the baffle 31 is in a horizontal state, and the baffle 31 blocks the bottom of the fixed water collecting tank 3. When the external force on the baffle 31 reaches a certain value, the baffle 31 rotates downward. After the external force disappears or decreases, the baffle 31 is reset under the action of the torsion spring 32. The mobile water collecting tank 4 is arranged below the fixed water collecting tank 3. The mobile water collecting tank 4 is a structure with an opening at the top, and the mobile water collecting tank 4 can be detachably connected to the fixed water collecting tank 3. The cleaning device also includes a descending assembly 5 for lifting and lowering the mobile water tank.

[0040] During the cleaning process, the waste liquid enters the fixed water collecting tank 3 from the drain pipe 14 and is temporarily stored in the fixed water collecting tank 3. When the amount of waste liquid in the fixed water collecting tank 3 reaches the designed value, the baffle 31 rotates to pour the waste liquid into the mobile water collecting tank 4. Then the mobile water collecting tank 4 is separated from the fixed water collecting tank 3, and the mobile water collecting tank 4 is lowered to the ground through the lowering assembly 5, and the mobile water collecting tank 4 is fully cleaned.

[0041] Combination Figure 5 and Figure 6, a plurality of positioning blocks 41 are fixedly connected to the side wall of the mobile water collecting tank 4 away from the shell 1, and a plurality of receiving blocks 33 corresponding to the positioning blocks 41 are fixedly arranged on the fixed water collecting tank 3. A plurality of positioning blocks 41 are fixedly connected to the side wall of the mobile water collecting tank 4 close to the shell 1, and a mounting groove 12 is provided on the side of the shell 1 close to the fixed water collecting tank 3, and the positioning blocks 41 are located in the mounting groove 12. A space is reserved in the mounting groove 12 for the positioning block 41 to move horizontally so that the positioning block 41 is aligned with the through groove 13. A plurality of through grooves 13 that penetrate downward through the shell 1 are provided in the mounting groove 12; the through grooves 13 and the receiving blocks 33 are staggered.

[0042] Combination Figure 4 and Figure 6 A top plate 35 is fixedly connected to the fixed water collecting box 3 , and the positioning block 41 is located between the top plate 35 and the receiving block 33 .

[0043] The positioning block 41 on the inner side of the mobile water collecting tank 4 overlaps the receiving block 33, and the positioning block 41 on the outer side overlaps the inner wall of the mounting groove 12, thus completing the connection between the mobile water collecting tank 4 and the fixed water collecting tank 3. The mobile water collecting tank 4 is moved horizontally so that the positioning blocks 41 are respectively located in the gap of the receiving block 33 or opposite to the through groove 13, and then the mobile water collecting tank 4 is driven to move downward by the descending assembly 5, which is convenient and quick.

[0044] Combination Figure 1 The landing assembly 5 includes a mounting plate 51, a displacement tube 52, a bidirectional lead screw 53 and a guide rod 54. The displacement tube 52 is vertically fixedly connected to the mounting plate 51, and the bidirectional lead screw 53 is threadedly connected in the displacement tube 52. The guide rod 54 is fixedly connected to the mounting plate 51, and the guide rod 54 is parallel to the bidirectional lead screw 53. Connecting plates 42 are fixedly provided on both sides of the mobile water collecting tank 4, one of the connecting plates 42 is provided with a connecting hole, and the other connecting plate 42 is provided with a guide hole. The bidirectional lead screw 53 is threadedly connected in the connecting groove, and the guide rod 54 is vertically inserted in the guide hole, and the guide rod 54 is a telescopic rod. The guide rod 54 is detachably connected to the mounting plate 51 by a threaded connection method. A universal wheel 511 is provided at the bottom of the mounting plate 51.

[0045] When not in use, the landing assembly 5 is stored separately. When it is needed, the landing assembly 5 is moved to the designated position so that the bidirectional screw 53 corresponds to the connecting hole and the guide rod 54 corresponds to the guide hole. Then the bidirectional screw 53 is rotated so that the bidirectional screw 53 moves upward to be inserted into the connecting hole and is threadedly connected with the connecting hole. Then the guide rod 54 is elongated so that the guide rod 54 is inserted into the guide hole. Then the mounting plate 51 is pushed to drive the mobile water collecting box 4 to move so that the positioning block 41 is respectively located in the gap of the receiving block 33 or opposite to the through groove 13, and then the bidirectional screw 53 is rotated in the opposite direction, and the bidirectional screw 53 drives the mobile water collecting box 4 to descend for cleaning. When resetting, the bidirectional screw 53 is rotated to drive the mobile water collecting box 4 to rise so that the horizontal position of the positioning block 41 is higher than the top of the receiving block 33, and then the mounting plate 51 is moved in the opposite direction so that the positioning block 41 is located directly above the receiving block 33, and then the bidirectional screw 53 is driven to rotate so that the mobile water collecting box 4 descends until the positioning block 41 abuts against the receiving block 33. Finally, the bidirectional lead screw 53 is driven to descend and detach from the connecting plate 42 .

[0046] Combination Figure 3 and Figure 4 If the waste liquid accumulated in the fixed water collecting tank 3 for the last time is not enough to drive the baffle 31 to rotate downward, the waste liquid cannot be poured into the mobile water collecting tank 4. In order to solve this problem, a pushing component 6 is set outside the fixed water collecting tank 3.

[0047] Combination Figure 3 and Figure 4 The pushing assembly 6 includes a push rod 61, a rotating rod 62 and a driving rod 63. The push rod 61 is located in the fixed water collecting tank 3, and the push rod 61 is vertically slidably connected to the fixed water collecting tank 3; the driving rod 63 is vertically slidably arranged relative to the fixed water collecting tank 3, and the driving rod 63 is located above the bidirectional screw 53. The rotating rod 62 is horizontally rotatably connected to the fixed water collecting tank 3, and the two ends of the rotating rod 62 are respectively rotatably connected to the push rod 61 and the driving rod 63. The side wall of the fixed water collecting tank 3 is provided with a slide groove 34 for the rotating rod 62 to pass through, and the rotating shaft of the rotating rod 62 is located in the slide groove 34. The gravity of the driving rod 63 is greater than that of the push rod 61, that is, in a natural state, the rotating rod 62 is tilted downward near one end of the driving rod 63.

[0048] When the baffle 31 cannot rotate under the effect of the waste liquid, the bidirectional lead screw 53 is driven upward, the bidirectional lead screw 53 pushes the driving rod 63 upward, the driving rod 63 drives one end of the rotating rod 62 to rise and the other end to fall, the falling end of the rotating rod 62 pushes the push rod 61 to fall, and the push rod 61 pushes the baffle 31 to rotate, and the waste liquid is dumped. Then the bidirectional lead screw 53 is driven downward, and under the effect of gravity, the driving rod 63 moves downward, driving the push rod 61 to move upward and reset.

[0049] Combination Figure 3 and Figure 4The mobile water collecting tank 4 is externally fixedly connected with a fixing plate 43, and a through hole 431 is provided on the fixing plate 43. The cross-sectional area of ​​the through hole 431 is larger than the bidirectional lead screw 53 and smaller than the driving rod 63, that is, the bidirectional lead screw 53 can pass through the through hole 431, but the driving rod 63 cannot pass through the through hole 431. The fixing plate 43 bears the weight of the driving rod 63, so that the gravity of the driving rod 63 is mainly dispersed on the fixing plate 43, reducing the force on the rotating shaft of the rotating rod 62, thereby reducing the probability of deformation and damage of the rotating shaft of the rotating rod 62.

[0050] Combination Figure 3 The inner side of the bottom wall of the shell 1 gradually extends downward from the middle toward the drain pipe 14, so that the waste liquid in the shell 1 can be discharged smoothly.

[0051] The implementation principle of the cleaning device for the air conditioning coil unit of the present application is: when no cleaning work is performed, the connecting pipe 22 is stored in the ceiling, and the descending assembly 5 is also stored separately. When cleaning work is required, the cleaning box and the hot air blower are prepared, and the descending assembly 5 is moved to the designed position.

[0052] One branch pipe 221 is connected to the cleaning box, and the other branch pipe 221 is connected to the hot air blower. The cleaning liquid is passed into the connecting pipe 22 through the water pump to rinse the surface cooler 11. The waste liquid after rinsing flows into the fixed water collecting tank 3 through the drain pipe 14 along the inclined bottom wall of the shell 1. As the waste liquid accumulates in the fixed water collecting tank 3, the baffle 31 rotates to pour the waste liquid into the mobile water collecting tank 4, and then the baffle 31 is reset under the action of the torsion spring 32, and the fixed water collecting tank 3 continues to work.

[0053] The bidirectional lead screw 53 is rotated so that the bidirectional lead screw 53 moves upward until it is inserted into the connection hole and is threadedly connected with the connection hole. Then the guide rod 54 is lengthened so that the guide rod 54 is inserted into the guide hole. Then the mounting plate 51 is pushed to drive the mobile water collecting box 4 to move so that the positioning block 41 is respectively located in the gap of the receiving block 33 or opposite to the through groove 13, and then the bidirectional lead screw 53 is rotated in the opposite direction, and the bidirectional lead screw 53 drives the mobile water collecting box 4 to descend for cleaning.

[0054] After cleaning is completed, the hot air blower is started to deliver hot air to the spray pipe 2 through the connecting pipe 22 to dry the inside of the shell 1.

[0055] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A cleaning device for an air conditioning coil unit, characterized in that: The invention comprises a shell (1), wherein a surface cooler (11) and a spray assembly are arranged inside the shell (1); a water collecting assembly is arranged outside the shell (1), and the water collecting assembly comprises a fixed water collecting box (3) and a movable water collecting box (4); the fixed water collecting box (3) is fixedly arranged outside the shell (1), and a drainage pipe (14) is connected between the fixed water collecting box (3) and the shell (1); the fixed water collecting box (3) is a structure with an opening at the bottom, and a baffle (31) is rotatably arranged at the bottom opening of the fixed water collecting box (3), and a torsion spring (32) is arranged between the baffle (31) and the fixed water collecting box (3); the movable water collecting box (4) is arranged below the fixed water collecting box (3), and the movable water collecting box (4) is a structure with an opening at the top, and the movable water collecting box (4) is detachably connected to the fixed water collecting box (3); It also comprises a descending assembly (5), which drives the movable water collecting tank (4) to move vertically.

2. The cleaning device for an air conditioning coil unit according to claim 1, characterized in that: A plurality of positioning blocks (41) are fixedly arranged on both side walls of the movable water collecting box (4), and a plurality of receiving blocks (33) corresponding to the positioning blocks (41) are fixedly arranged on the fixed water collecting box (3); a mounting groove (12) is provided on one side of the shell (1) close to the fixed water collecting box (3), and a plurality of through grooves (13) penetrating downward through the shell (1) are provided in the mounting groove (12); the through grooves (13) and the receiving blocks (33) are staggered.

3. The cleaning device for an air conditioning coil unit according to claim 2, characterized in that: The descending assembly (5) comprises a mounting plate (51), a displacement tube (52), a bidirectional lead screw (53) and a guide rod (54); the displacement tube (52) is vertically arranged on the mounting plate (51), the bidirectional lead screw (53) is threadedly connected to the displacement tube (52), and the guide rod (54) is fixedly connected to the mounting plate (51); connecting plates (42) are fixedly arranged on both sides of the mobile water collecting tank (4), the bidirectional lead screw (53) is threadedly connected to one of the connecting plates (42), the guide rod (54) is vertically slidably connected to the other connecting plate (42), and the guide rod (54) is a telescopic rod.

4. The cleaning device for an air conditioning coil unit according to claim 1, characterized in that: The inner side of the bottom wall of the shell (1) gradually extends downward from the middle portion toward the drain pipe (14).

5. The cleaning device for an air conditioning coil unit according to claim 1, characterized in that: A pushing assembly (6) is arranged outside the fixed water collecting tank (3), and the pushing assembly (6) comprises a push rod (61), a rotating rod (62) and a driving rod (63); one end of the push rod (61) is located in the fixed water collecting tank (3), and the push rod (61) is vertically slidably connected to the fixed water collecting tank (3); the driving rod (63) is vertically slidably arranged relative to the fixed water collecting tank (3), and the driving rod (63) is located above the bidirectional lead screw (53); the rotating rod (62) is horizontally rotatably connected to the fixed water collecting tank (3), and the two ends of the rotating rod (62) are rotatably connected to the push rod (61) and the driving rod (63) respectively.

6. The cleaning device for an air conditioning coil unit according to claim 5, characterized in that: The gravity of the driving rod (63) is greater than that of the push rod (61), that is, in a natural state, the end of the rotating rod (62) close to the driving rod (63) is tilted downward.

7. The cleaning device for an air conditioning coil unit according to claim 6, characterized in that: A fixing plate (43) is arranged outside the movable water collecting box (4), and the fixing plate (43) abuts against the bottom of the driving rod (63) to limit the upper limit of the downward movement of the driving rod (63); a through hole (431) is provided on the fixing plate (43), and the bidirectional lead screw (53) can pass through the through hole (431).

8. The cleaning device for an air conditioning coil unit according to claim 3, characterized in that: A universal wheel (511) is provided at the bottom of the mounting plate (51).

9. The cleaning device for an air conditioning coil unit according to claim 1, characterized in that: The spray assembly comprises a spray pipe (2), a spray head (21) and a connecting pipe (22); the spray pipe (2) is arranged in the housing (1); the spray head (21) is connected to the spray pipe (2); and the connecting pipe (22) connects the spray pipe (2) with the cleaning liquid.

10. The cleaning device for an air conditioning coil unit according to claim 9, characterized in that: The connecting pipe (22) is provided with two branch pipes (221) at one end away from the spray pipe (2).

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