A method and device for removing dust from a condenser inside an air conditioner box

Abstract

The present invention discloses a method and a dust removal device for removing dust from a condenser inside an air conditioner box, the dust removal device comprises a fan, a dust collection box and a brush, and also comprises a variable speed drive mechanism for driving the brush to lift and lower and rotate 90 degrees, a rotation positioning mechanism matched with the variable speed drive mechanism, and a lower limit mechanism matched with the brush and the dust collection box, the dust collection box is connected to the bottom of the brush and is open at the top, the bristles of the brush are arranged in the top inner cavity of the dust collection box, and the bottom of the dust collection box is a convex rotary elastic opening and closing structure. The present invention greatly improves the service life of the brush and improves the overall dust removal effect.

Description

Technical Field

[0001] The present invention relates to the technical field of dust removal for water-cooled air conditioners, and in particular to a method and a dust removal device for removing dust from a condenser inside an air conditioner box. Background Art

[0002] Battery-swap heavy trucks have the advantages of being green and energy-saving and are widely used. They have a large battery pack, and generally require a water-cooled air conditioner to control the temperature of the battery pack; and the condenser is a key component in the working process of a water-cooled air conditioner, or a water-cooled air conditioning unit. The condenser is generally composed of heat exchange tubes and thinner heat exchange fins. Battery-swap heavy trucks are often used in places with harsh environments such as mines. The surfaces of the heat exchange tubes and heat exchange fins are easily adhered to a large amount of dust due to frequent ventilation and water vapor intrusion. If dust is not removed in time, the heat exchange effect will be greatly reduced. Some mineral dusts even have strong acid and alkali corrosion, which can easily cause corrosion and damage to the internal components of the air conditioning unit within the heat exchange fins. The condenser of the water-cooled air conditioning unit on the traditional battery-swap heavy truck is generally washed and maintained with high-pressure air or water guns, but this can only be done when the vehicle is maintained at the repair station. Therefore, the dust on the surface of the heat exchange tubes and heat exchange fins of the condenser cannot be cleaned in time.

[0003] At present, there are dust removal devices randomly installed on condensers inside air-conditioning cabinets, such as the Chinese patent, publication number CN212227856 U, which discloses a condenser dust removal device, which proposes "comprising an outdoor unit housing, a condenser body and a dust removal mechanism; the dust removal mechanism comprises a brush roller arranged in front of the condenser body, both sides of the brush roller are rotatably connected with moving blocks through a rotating shaft, the moving block is nested with a slide plate, the slide plate is provided with a vertical slide, a screw is provided in the vertical slide, the screw passes through the moving block and is threadedly connected to the moving block; the upper end of the screw is connected to a transmission shaft through a transmission bevel gear set, and the transmission shaft is connected to a dual-axis motor through a coupling; a dust collection hood is provided on the rear side of the condenser body".

[0004] Although the prior art uses the coordinated arrangement of a brush roller, a movable block, a screw and a dust collecting hood to rotate and brush the heat exchange tubes and heat exchange fins, and to collect and settle the dust, the bristles of the brush roller in the prior art are exposed to a humid and corrosive working environment for a long time, and are easily sticky with dust or corroded, resulting in a shortened service life. At the same time, after the bristles of the brush roller in the prior art clean the dust on the surface of the heat exchange tubes and heat exchange fins of the condenser, the accumulated dust on the brush roller itself cannot be removed in time, further affecting the service life of the brush roller and the overall cleaning effect, and even causing the bristles to become hardened and damage the heat exchange fins.

[0005] Therefore, a new technical solution is needed to solve the above technical problems. Summary of the invention

[0006] The object of the present invention is to provide a method and a dust removal device for removing dust from a condenser inside an air-conditioning box, so as to solve the problem that the randomly installed dust removal device for the existing condenser inside an air-conditioning box proposed in the above background technology has a brush whose bristles are exposed to a humid and corrosive working environment for a long time, and are easily sticky with dust or corroded, resulting in the service life of the brush being affected. At the same time, after cleaning the dust on the surface of the heat exchange tubes and heat exchange fins of the condenser, the dust accumulated on the bristles of the brush cannot be removed in time, further affecting the service life of the brush and the overall cleaning effect, and even causing the bristles to become hardened and damage the heat exchange fins.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] On the one hand, the present invention provides a method for removing dust from a condenser inside an air conditioner box, which is applicable to a fan, a brush and a dust collection box, and the method is as follows:

[0009] S1. Place the bristles of the brush downward so that the bristles of the brush are covered by the dust collection box;

[0010] S2. Determine the corresponding dust removal time according to the humidity data of the condenser;

[0011] S3, pull the brush downward, so as to rotate the brush counterclockwise 90 degrees first, so that the bristles of the brush leave the dust collection box and touch the surface of the condenser, and then make the brush and the bristles continue to move downward to complete the dust removal operation. The dust removed in this process falls into the dust collection box, wherein the dust removal strength of the brush is determined according to the humidity data of the condenser;

[0012] S4, after the dust removal operation is completed, the brush and the dust collection box are hit at the same time, so that the dust and moisture on the brush bristles are shaken off into the dust collection box, and the bottom of the dust collection box is opened, and finally the dust and moisture are discharged outside the air conditioner, and the bottom of the dust collection box is closed; wherein, the corresponding impact timing is determined according to the position of the brush; and the impact strength and impact number are determined according to the humidity data of the condenser;

[0013] S5, reversely operate the fan to dry the brush, wherein the speed of the fan is determined according to the humidity data of the condenser;

[0014] S6, driving the brush to move upward, so that the brush is first rotated 90 degrees clockwise, the bristles of the brush continue to be covered by the dust collection box, and then the brush and the dust collection box continue to move upward to return to the initial position.

[0015] Furthermore, during multiple dust removal operations, the fan is reversed to blow the dust inside the condenser to the surface before dust removal is performed, and the dust removal operation is only performed when the brush moves downward, at which time the dust falls into the bristles of the brush and the dust collection box; at the same time, during multiple dust removal operations, the dust removal intensity is increased from small to large, and the floating dust is removed first.

[0016] On the other hand, the present invention also provides a dust removal device using the above-mentioned method for removing dust from the condenser inside the air-conditioning box, comprising a dust collection box, a fan vertically fixed to the rear side of the condenser, a brush arranged in front of the condenser, a variable speed drive mechanism for driving the brush to lift and reciprocate and rotate 90 degrees, a rotation positioning mechanism matched with the variable speed drive mechanism, a lower limit mechanism matched with the brush and the dust collection box, and an air-conditioning unit bottom plate matched with the condenser, the brush being a soft brush, the dust collection box being connected directly below the brush and having an open top, the bristles of the brush being arranged in the top inner cavity of the dust collection box, and the bottom of the dust collection box being a forward-convex rotary elastic opening and closing structure;

[0017] Furthermore, the bottom plate of the air-conditioning unit is horizontally arranged below the dust collection box and a dust discharge hole is opened at a position opposite to the dust collection box, the bristle carrier plate of the brush is through-mounted on a cross bar, the left and right ends of the cross bar can be slidably mounted on two guide rods and are respectively threadedly connected to the two guide rods, the two guide rods are symmetrically and vertically fixed to the upper surface of the bottom plate of the air-conditioning unit, the rotation positioning mechanism is symmetrically provided with two and each includes a rotation limit plate, a positioning limit plate abutting and cooperating with the rotation limit plate, and a torsion spring installed on the cross bar and abutting and cooperating with the bristle carrier plate of the brush, the rotation limit plate is rotatably connected to the front side of the bristle carrier plate of the brush, the positioning limit plate is vertically fixed to the bottom of the cross bar and is in an L-shaped structure with its opening facing the corresponding rotation limit plate;

[0018] Furthermore, the dust collecting box comprises a rectangular outer frame and a rotating base plate, the left and right outer walls of the rectangular outer frame are respectively connected to the left and right bottom ends of the cross bar with L-shaped connecting plates, the top and bottom of the rectangular outer frame are both open, the rotating base plate is arranged below the rectangular outer frame and protrudes forward relative to the rectangular outer frame, a hinge is connected between the side of the bottom of the rectangular outer frame away from the condenser and the rotating base plate, and the other side of the rotating base plate is connected to the top of the inner wall of the rectangular outer frame with a tension spring, the lower limit mechanism comprises a lower limit block I, a lower limit block II, and a lower limit block III abutting against the convex part of the rotating base plate, the lower limit blocks I, II and III are all fixed to the upper surface of the bottom plate of the air-conditioning unit, and the left and right ends of the bottom of the cross bar are respectively fixed with an upper limit block I abutting against the lower limit block I and an upper limit block II abutting against the lower limit block II.

[0019] Specifically, the speed-changing drive mechanism can be set to four structures:

[0020] First, the variable speed drive mechanism includes a horizontally arranged drive motor, the output end of the drive motor is connected to a wire drum, a steel cable is wound on the wire drum, a connecting plate is horizontally fixed to the top of the brush bristle carrier plate, the connecting plate is protruded forward relative to the brush bristle carrier plate and its protruding part is connected to the other end of the steel cable, two coil springs are symmetrically mounted on the two guide rods, and the bottoms of the two coil springs are respectively connected to the tops of the left and right ends of the cross bar;

[0021] Second, the variable speed drive mechanism includes a horizontally arranged drive motor, the output end of the drive motor is connected to a wire drum, a steel cable is wound on the wire drum, the other end of the steel cable is connected to the bottom of the front middle position of the brush bristle carrier plate, the inner side of one of the guide rods is connected to a horizontal spring, the other end of the horizontal spring is connected to a transmission rope, the inner side of the other guide rod is horizontally connected to two pulleys in sequence from top to bottom, and the other end of the transmission rope is connected to the top middle position of the brush bristle carrier plate after passing through the two pulleys in sequence;

[0022] Third, the variable speed drive mechanism includes a vertically arranged linear motor, and the output end of the linear motor is connected to the bristle carrier plate of the brush;

[0023] Fourth, the speed change drive mechanism includes an electromagnetic push rod, the output end of the electromagnetic push rod is connected to a lever, the other end of the lever away from the electromagnetic push rod is connected to a traction rope, the other end of the traction rope is connected to the bottom of the front middle position of the brush bristle carrier plate, and a horizontal connecting rod is fixedly connected between the two guide rods. The horizontal connecting rod is arranged above the cross bar, and a vertical spring is connected between the top middle position of the brush bristle carrier plate and the bottom middle position of the horizontal connecting rod.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The method for removing dust from the condenser inside the air-conditioning box of the present invention solves the problems of how to determine the dust removal time, how to protect the bristles of the brush, how to clean and discharge the dust, and how to prevent the dust from scattering during dust removal. While timely removing dust to prevent dust from sticking and greatly improving the dust removal effect, the bristles of the brush are prevented from being corroded and damaged in a non-dust removal state, and the bristles of the brush are prevented from being hardened and damaged due to the wet dust accumulation that cannot be cleaned in time, thereby greatly improving the service life of the brush;

[0026] 2. The dust collection box in the dust removal device of the present invention is connected to the bottom of the brush and has an open top. The bristles of the brush are arranged in the top inner cavity of the dust collection box. The dust collection box protects the bristles of the brush in a non-dust removal state. When the condenser is frequently ventilated by the fan and water vapor enters, the wind from the fan cannot blow onto the bristles of the brush, thereby preventing dust from adhering to the bristles of the brush and preventing corrosive moisture from causing corrosion damage to the bristles of the brush, thereby greatly improving the service life of the brush. On this basis, a variable speed device is used to drive the brush to lift and reciprocate and rotate 90 degrees. The driving mechanism and the rotating positioning mechanism matched with the variable speed driving mechanism work together, before the dust removal operation is carried out, the brush is rotated counterclockwise 90 degrees, the bristles of the brush leave the dust collection box, just against the surface of the heat exchange tube and the heat exchange fin of the condenser, the brush maintains this state and moves downward to complete the dust removal operation, and the dust removed during the dust removal operation falls into the dust collection box which moves synchronously with the brush. After the dust removal operation is completed, the brush is rotated clockwise 90 degrees, the bristles of the brush are set in the dust collection box again, the brush maintains this state and moves upward and resets, at the same time, the bottom of the dust collection box is The forward-convex rotating elastic opening and closing structure and the coordinated arrangement of the lower limit mechanism enable the bottom of the dust collection box to be opened under the pushing action of the lower limit mechanism, so that the dust collection box realizes the functions of collecting dust and automatically discharging dust; on this basis, through the coordinated action of the lower limit mechanism and the variable speed drive mechanism, the bristles of the brush can realize oscillating self-dusting, that is, the brush first moves downward to a position in contact with the lower limit mechanism through the variable speed drive mechanism, and then moves upward to a position close to the lower limit mechanism through the variable speed drive mechanism, and then moves downward through the variable speed drive mechanism to impact the lower limit mechanism, and the impact operation produces The vibration caused by the brush shakes the dust on the bristles of the brush off into the dust collection box, and in this process, the dust collection box collides with the lower limit mechanism at the same time, and the bottom of the dust collection box continues to open under the pushing action of the lower limit mechanism to discharge the dust, which effectively solves the problem that the bristles of the brush cannot be cleaned in time after cleaning the dust on the surface of the heat exchange tubes and heat exchange fins of the condenser, further prolongs the service life of the brush, and greatly improves the dust removal effect, and avoids the situation that the bristles of the brush become hard and damage the heat exchange fins due to the inability to remove the wet dust in time;

[0027] 3. The variable speed drive mechanism in the dust removal device of the present invention cooperates with the control mechanism commonly equipped on the existing condenser dust removal device, and can effectively control the working force of the brush bristles by adjusting the speed of the brush moving downward. For the initial floating dust, the movement speed of the brush is slow, and the working force of the brush bristles is light, which can prevent the dust from splashing onto other internal components of the condenser, causing corrosion and damage to the internal components. The subsequent speed increase can effectively remove the dust that has been adhered to the surface of the heat exchange tube and the heat exchange fin, and finally further improve the overall dust removal effect. In addition, when the brush bristles are During the oscillation-type self-dusting, the adjustment of the movement speed of the brush can indirectly control the impact force of the brush relative to the lower limit mechanism. The faster the brush moves downward, the greater the impact force, and the better the effect of shaking off the dust. On this basis, in combination with the use of the humidity sensor commonly equipped on the existing condenser dust removal device, it is possible to effectively prevent the wet dust from adhering to the bristles of the brush. That is, when the humidity sensor senses that the humidity increases, that is, the adsorption force of the dust increases, the variable speed drive mechanism controls the brush to increase the impact force and the number of impacts, thereby further ensuring the oscillating dust removal effect on the bristles of the brush;

[0028] 4. The rotation positioning mechanism in the dust removal device of the present invention is composed of a torsion spring, a rotation limit plate, and a positioning limit plate with an L-shaped structure. Through the coordinated arrangement of the rotation limit plate and the positioning limit plate, the brush can be pulled downward by the speed change drive mechanism. When the brush and its bristles are subjected to force and rotate counterclockwise with the cross bar as the rotating axis, the rotation limit plate on the brush bristle support plate rotates counterclockwise synchronously. When the brush and its bristles rotate 90 degrees counterclockwise and abut against the surface of the heat exchange tubes and heat exchange fins of the condenser, the rotation limit plate also rotates 90 degrees counterclockwise and abuts against the positioning limit plate, so that the brush and its bristles cannot rotate and continue to abut against the surface of the heat exchange tubes and heat exchange fins of the condenser, thereby ensuring the smooth operation of the brush. The brush is then automatically turned on and off to prevent dust from getting in the way of the brush and the dust is then removed from the condenser.

[0029] 5. The dust collecting box in the dust removal device of the present invention is composed of a rectangular outer frame, a rotating bottom plate, a hinge and a tension spring. By utilizing the coordinated cooperation of the hinge and the tension spring, the rotating bottom plate can be connected to the rectangular outer frame while ensuring the elastic opening and closing of the rotating bottom plate relative to the rectangular outer frame, thereby further ensuring the realization of the dust collection and dust discharge functions of the dust collecting box; in addition, by coordinating the dust discharge holes on the bottom plate of the air conditioning unit, it can be ensured that the dust is smoothly discharged from the air conditioner;

[0030] 6. After the preliminary dust removal operation is completed, the fan in the dust removal device of the present invention can blow air in the reverse direction to the heat exchange tubes and heat exchange fins of the condenser, so as to blow out the dust in the heat exchange fins and perform dust removal again, and finally further ensure the overall dust removal effect; in addition, in combination with the humidity sensor commonly equipped with the existing condenser, after the dust removal operation is completed, it can be determined whether to immediately start the fan to reversely blow dry the brush according to the humidity state detected by the humidity sensor. The higher the humidity, the lower the reverse speed of the fan is controlled, thereby reducing the wind force and using the breeze to slowly dry the brush. On the contrary, when the humidity is low, the reverse speed of the fan is increased to quickly dry the brush, and finally further avoid the corrosion of the brush bristles by the acidic, alkaline and humid environment, thereby extending the service life of the brush;

[0031] 7. The dust removal device of the present invention can be used in pairs, that is, the two dust removal devices are controlled to work synchronously on the front and back sides of the condenser. The dust removal device located outside the condenser can save the dust collection box, and finally further ensure the overall dust removal effect;

[0032] 8. The brush in the dust removal device of the present invention is a soft brush, which can be well applied to thin heat exchange fins, thereby further ensuring the dust removal effect on the surface of the heat exchange fins of the condenser. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the working principle of Embodiment 1 of the present invention;

[0034] Figure 2 This is a schematic diagram of the working principle of the driving mechanism of Example 2 of the present invention;

[0035] Figure 3 This is a schematic diagram of the working principle of the driving mechanism of Example 3 of the present invention;

[0036] Figure 4 This is a schematic diagram of the working principle of the driving mechanism of Example 4 of the present invention;

[0037] In the figure: 1, fan, 2, condenser, 3, cross bar, 4, guide rod, 5, brush, 51, bristles, 52, bristle bearing plate, 6, dust collection box, 61, rectangular frame, 62, rotating bottom plate, 63, hinge, 64, tension spring, 7, air conditioning unit bottom plate, 8, lower limit block I, 9, lower limit block II, 10, lower limit block III, 11, upper limit block I, 12, upper limit block II, 13, dust discharge hole, 14, rotating limit piece, 15. Positioning limit plate, 16. Torsion spring, 17. Driving motor, 18. Wire drum, 19. Steel cable, 20. Connecting plate, 21. Coil spring, 22. Horizontal spring, 23. Transmission rope, 24. Pulley, 25. Linear motor, 26. Electromagnetic push rod, 27. Lever, 28. Traction rope, 29. Horizontal connecting rod, 30. Vertical spring, 31. L-shaped connecting plate, 32. Humidity sensor, 33. Limit switch, 34. Control board. DETAILED DESCRIPTION

[0038] The following examples are used to further illustrate the content of the present invention, but do not limit the application of the present invention. Embodiment 1:

[0039] See also Figure 1, which shows a dust removal device for removing dust from a condenser inside an air-conditioning box, comprising a fan 1, a brush 5, a condenser 2, and an air-conditioning unit bottom plate 7 matched with the condenser 2 (the functions and structures of conventional equipment such as a humidity sensor 32, a limit switch 33, and a control panel 34 commonly equipped on existing condenser dust removal devices are well known in the art, and the connection settings are also common knowledge, so they are not described here in detail, and are not shown in detail in the accompanying drawings). The brush 5 is a soft brush, and the condenser 2 is vertically arranged between the fan 1 and the brush 5. The bristle support plate 52 of the brush 5 is horizontally installed on a cross bar 3. The cross bar 3 is provided with a torsion spring 16 that corresponds to and abuts against the left and right ends of the bristle support plate 52 of the brush 5. The left and right ends of the cross bar 3 are respectively threadedly connected and mounted on two guide rods 4. The two guide rods 4 are arranged in parallel and are respectively vertically fixed to the left and right sides of the upper surface of the air-conditioning unit bottom plate 7. A dust collecting box 6 is provided between the unit bottom plate 7 and the brush 5. The dust collecting box 6 comprises a rectangular outer frame 61 located just below the bristle bearing plate 52 of the brush 5, and a rotating bottom plate 62 provided below the rectangular outer frame 61. The top and bottom of the rectangular outer frame 61 are both open, and the bristles 51 of the brush 5 are suspended in the top inner cavity of the rectangular outer frame 61. An L-shaped connecting plate 31 is connected between the left outer wall of the rectangular outer frame 61 and the left end bottom of the cross bar 3, and between the right outer wall of the rectangular outer frame 61 and the right end bottom of the cross bar 3. A hinge 63 is connected between the bottom of the side of the rectangular outer frame 61 away from the condenser 2 and the rotating bottom plate 62, and a tension spring 64 is connected between the top of the inner wall of the other side of the rectangular outer frame 61 and the rotating bottom plate 62. The rotating bottom plate 62 is provided to protrude forward relative to the rectangular outer frame 61, and a dust discharge hole 13 is provided on the bottom plate 7 of the air-conditioning unit directly facing the rotating bottom plate 62.

[0040] Furthermore, two rotation limit pieces 14 are rotatably connected to the front side of the bristle support plate 52 of the brush 5 in a symmetrical manner, and the bottom of the cross bar 3 is vertically fixed with positioning limit pieces 15 that abut against the rotation limit pieces 14. The two positioning limit pieces 15 are L-shaped structures with their openings facing the corresponding rotation limit pieces 14; upper limit blocks Ⅰ11 and upper limit blocks Ⅱ12 are respectively fixed to the left and right ends of the bottom of the cross bar 3, and the upper surface of the bottom plate 7 of the air-conditioning unit is fixed with lower limit blocks Ⅰ8 that abut against the upper limit block Ⅰ11, lower limit blocks Ⅲ10 that abut against the front convex part of the rotating bottom plate 62, and lower limit blocks Ⅱ9 that abut against the upper limit block Ⅱ12.

[0041] Furthermore, a connecting plate 20 is horizontally fixed to the top of the bristle carrier plate 52 of the brush 5, the connecting plate 20 is protruding forward relative to the bristle carrier plate 52 and the protruding portion is connected to a steel cable 19, the other end of the steel cable 19 is wound around a wire drum 18, the wire drum 18 is transmission-connected to the output end of a drive motor 17, the drive motor 17 is horizontally arranged on the upper surface of the bottom plate 7 of the air-conditioning unit, and two coil springs 21 are respectively connected to the left and right ends of the top of the cross bar 3, and the two coil springs 21 are symmetrically mounted on the two guide rods 4; the drive motor 17, the wire drum 18, the steel cable 19, the connecting plate 20, and the two coil springs 21 together constitute a variable speed drive mechanism.

[0042] The dust removal device of the present invention can determine the specific dust removal time according to the humidity data provided by the humidity sensor 32, and automatically start the dust removal work to prevent the dust from drying (it can also be manually operated, controlled by the driving console button of the battery-swap heavy truck). The working principle and working process of the dust removal device of the present invention are as follows:

[0043] Brush 5 dust removal: Start the drive motor 17, and the output shaft of the drive motor 17 rotates counterclockwise, driving the wire drum 18 to tighten the steel cable 19 counterclockwise, so that the connecting plate 20 on the bristle support plate 52 of the brush 5 is pulled downward by the steel cable 19, and the bristle support plate 52 of the brush 5 is pulled downward. The bristle support plate 52 of the brush 5 is subjected to force, and under the action of the rotation limit plate 14 and the positioning limit plate 15, it rotates 90 degrees counterclockwise with the cross bar 3 as the rotation axis, and drives the bristles 51 of the brush 5 to leave the top of the inner cavity of the dust collection box 6, just against the surface of the heat exchange tube and the heat exchange fin of the condenser 2 (at this time, the torsion spring 1 6 is in a compressed state, the rotation limit piece 14 abuts against the corresponding positioning limit piece 15, and the bristle support plate 52 of the brush 5 cannot continue to rotate), continue to pull the bristle support plate 52 of the brush 5 downward, so that the bristle support plate 52 of the brush 5 moves downward along the guide rod 4 through the cross bar 3, and the bristles 51 of the brush 5 remain in a state of abutting against the surfaces of the heat exchange tubes and heat exchange fins of the condenser 2, and move downward synchronously to clean the dust on the surfaces of the heat exchange tubes and heat exchange fins of the condenser 2 (at this time, the downward pulling force provided by the steel cable 19 is greater than the upward elastic force provided by the coil spring 21), and the dust falls into the dust collection box 6;

[0044] During the whole process, the faster the output shaft speed of the driving motor 17 is, the greater the working force of the bristles 51 of the brush 5 is. For the initial floating dust, the movement speed of the brush 5 is slow and the working force of the bristles 51 is light, which can prevent the dust from splashing onto other internal components of the condenser 2 and causing corrosion and damage to the internal components. The subsequent increase in speed can effectively remove the dust that has adhered to the surface of the heat exchange tube and the heat exchange fin.

[0045] The dust collecting box 6 discharges dust: the bristle bearing plate 52 of the brush 5 continues to move downward along the guide rod 4 through the cross bar 3, driving the dust collecting box 6 to move downward synchronously until the convex part of the rotating bottom plate 62 of the dust collecting box 6 contacts the lower limit block III 10. At this time, if the dust collecting box 6 continues to move downward, the rotating bottom plate 62 will turn clockwise with the hinge 63 as the rotating axis, so that the bottom of the dust collecting box 6 is in an open state, and the bottom of the dust collecting box 6 after opening is facing the dust discharge hole 13 on the bottom plate 7 of the air conditioning unit, so that the dust in the dust collecting box 6 can be discharged outside the air conditioner;

[0046] Device reset: The driving motor 17 stops rotating and rotates in the reverse direction, so that the wire drum 18 releases the steel cable 19, so that the pulling force of the steel cable 19 on the bristle carrier plate 52 of the brush 5 becomes smaller (the reverse torque of the driving motor 17 can control the pulling force of the steel cable 19), and the bristle carrier plate 52 of the brush 5 rotates 90 degrees clockwise under the action of the coil spring 21 (the rotation limit plate 14 leaves the corresponding positioning limit plate 15), and the bristles 51 of the brush 5 rotate 90 degrees clockwise under the action of the torsion spring 16 and return to the dust collection box. 6, at this time, the downward pulling force provided by the steel cable 19 is smaller than the upward elastic force provided by the coil spring 21, and the bristle carrier plate 52 of the brush 5 moves upward along the guide rod 4 through the cross bar 3, thereby driving the brush 5 and the dust collecting box 6 to continue to move upward and return to their original positions; as the dust collecting box 6 moves upward, the rotating bottom plate 62 of the dust collecting box 6 leaves the lower limit block III 10, and under the action of the tension spring 64, the rotating bottom plate 62 is closed again, and the bottom of the dust collecting box 6 is restored to a closed state.

[0047] The brush 5 can also realize oscillating dust removal, and the specific process is as follows:

[0048] The bristle support plate 52 of the brush 5 moves downward until the upper limit block Ⅰ11 and the upper limit block Ⅱ12 on the bristle support plate 52 respectively abut against the lower limit block Ⅰ8 and the lower limit block Ⅱ9 on the bottom plate 7 of the air-conditioning unit. At this time, the control board 34 detects the state of the limit switch 33 (the limit switch 33 can be installed on the top of the lower limit block Ⅱ9), and controls the output shaft of the drive motor 17 to reverse, so that the brush 5 and the dust collection box 6 move upward along the guide rod 4 for a distance under the action of the coil spring 21, and then changes the rotation direction of the output shaft of the drive motor 17 again, with The bristle carrier plate 52 of the moving brush 5 moves downward together with the bristle carrier plate 52, and the upper limit block Ⅰ11 and the upper limit block Ⅱ12 on the bristle carrier plate 52 respectively hit the lower limit block Ⅰ8 and the lower limit block Ⅱ9 on the bottom plate 7 of the air conditioning unit, and the rotating bottom plate 62 of the dust collecting box 6 hits the lower limit block Ⅲ10, so that the brush 5 and the dust collecting box 6 are vibrated, and the bottom of the dust collecting box 6 is opened at the same time, and finally the dust accumulated on the brush 5 is shaken off into the dust collecting box 6, and the dust in the dust collecting box 6 is discharged outside the air conditioner through the dust discharge hole 13 on the bottom plate 7 of the air conditioning unit;

[0049] During the whole process, the faster the output shaft speed of the driving motor 17 is, the greater the impact force is and the better the effect of shaking off the dust is. The control board 34 can control the strength and frequency of the impact according to the humidity data of the humidity sensor 32. When the humidity sensor 32 senses that the humidity increases, that is, the adsorption force of the dust increases, the impact force and the frequency of the impact of the brush 5 are increased. The control board 34 can also control the impact force according to the progress of dust removal. At the beginning, the floating dust is removed with a small impact force, and then it is gradually increased.

[0050] The above working process can be repeated multiple times, that is, multiple dust removal operations are achieved by moving the brush 5 up and down (dust removal is only performed when the brush 5 moves downward, at which time the dust falls into the bristles 51 of the brush 5 and the dust collection box 6, thereby ensuring that the dust does not splash), so as to finally clean the dust accumulated on the surface of the heat exchange tubes and heat exchange fins inside the air conditioner condenser.

[0051] In addition, after the preliminary dust removal operation is completed, the fan 1 can blow air in the reverse direction toward the heat exchange tubes and heat exchange fins of the condenser 2, so as to blow out the dust in the heat exchange fins and perform the dust removal operation again. After the dust removal operation is completed, it can also be determined whether to immediately start the fan 1 to reversely blow the bristles 51 of the brush 5 dry according to the humidity state detected by the humidity sensor 32. The higher the humidity, the lower the reverse speed of the fan 1 is controlled, thereby reducing the wind force and using the breeze to slowly dry. Conversely, when the humidity is low, the reverse speed of the fan 1 is increased to quickly dry.

[0052] The dust removal device can also perform dust removal operation in pairs, that is, the two dust removal devices are controlled to work synchronously on the front and back sides of the condenser 2. The dust collection box 6 can be omitted for the dust removal device located outside the condenser 2. Embodiment 2:

[0053] See also Figure 1 and Figure 2 This embodiment is also driven by a motor and spring force, and the difference from the first embodiment is that: the speed-changing drive mechanism omits the connecting plate 20 and the two coil springs 21, and adds a horizontal spring 22, a transmission rope 23 and two pulleys 24. The end of the steel cable 19 away from the wire drum 18 is connected to the bottom of the front middle position of the brush carrier plate 52 of the brush 5, one end of the horizontal spring 22 is connected to a guide rod 4, and the other end of the horizontal spring 22 is connected to the transmission rope 23. The inner side of another guide rod 4 is horizontally connected to two pulleys 24 in sequence from top to bottom, and the other end of the transmission rope 23 is connected to the top middle position of the brush carrier plate 52 of the brush 5 after passing through the two pulleys 24 in sequence.

[0054] During operation, the brush 5 is reset by the upward elastic force provided by the horizontal spring 22 and the transmission rope 23. Embodiment 3:

[0055] See also Figure 1 and Figure 3 This embodiment is driven by a single motor, and the difference from the embodiment 1 is that the variable speed drive mechanism is only a vertically arranged linear motor 25, and the output end of the linear motor 25 is connected to the bristle carrier plate 52 of the brush 5.

[0056] During operation, the linear motor 25 directly drives the brush carrier plate 52 to move the entire brush 5 up and down (during this process, the bristles 51 of the brush 5 also reciprocate 90 degrees). Embodiment 4:

[0057] See also Figure 1 and Figure 4 This embodiment is driven by electromagnetic force and spring force, and the difference from Embodiment 1 is that the speed change driving mechanism is composed of an electromagnetic push rod 26, a lever 27, a traction rope 28, a horizontal connecting rod 29, and a vertical spring 30. The output end of the electromagnetic push rod 26 is connected to one end of the lever 27, and the other end of the lever 27 is connected to one end of the traction rope 28. The other end of the traction rope 28 is connected to the bottom of the front middle position of the bristle carrier plate 52 of the brush 5. The horizontal connecting rod 29 is arranged above the cross bar 3 and the left and right ends are fixedly connected to the two guide rods 4 respectively. The top middle position of the bristle carrier plate 52 of the brush 5 and the bottom middle position of the horizontal connecting rod 29 are connected through the vertical spring 30.

[0058] During operation, the electromagnetic force of the electromagnetic push rod 26 can be used as a thrust to push the lever 27 to rotate. The rotation of the lever 27 drives the traction rope 28 to pull the bristle carrier plate 52 and the entire brush 5 to move downward (during this process, the bristles 51 of the brush 5 first rotate 90 degrees counterclockwise). When the thrust of the electromagnetic push rod 26 is removed, the brush 5 relies on the spring force of the vertical spring 30 to move upward and reset to the initial position (during this process, the bristles 51 of the brush 5 first rotate 90 degrees clockwise).

Claims

1. A method for removing dust from a condenser inside an air conditioner box using a dust removal device, which is suitable for a fan, a brush and a dust collection box, characterized in that: The dust removal device includes a fan, a dust collection box, a brush, a variable speed drive mechanism for driving the brush to lift and reciprocate and rotate 90 degrees, a rotation positioning mechanism matched with the variable speed drive mechanism, and a lower limit mechanism matched with the brush and the dust collection box, the dust collection box is connected to the bottom of the brush and is open at the top, the bristles of the brush are arranged in the top inner cavity of the dust collection box, and the bottom of the dust collection box is a convex rotary elastic opening and closing structure; The specific steps of the dust removal method are as follows: S1. Place the bristles of the brush downward so that the bristles are covered by the dust collection box; S2. Determine the dust removal timing based on the humidity data of the condenser; S3, pull the brush downward, first rotate the brush counterclockwise 90 degrees, the bristles leave the dust collection box and touch the surface of the condenser, then continue to move the brush downward to complete the dust removal operation, and the cleaned dust falls into the dust collection box; S4, hitting the brush and the dust collection box at the same time, shaking off the dust and moisture on the brush hair into the dust collection box, and the bottom of the dust collection box opens to discharge the dust and moisture out of the air conditioner; S5, reverse the operation of the fan to dry the brush; S6, driving the brush to move upward, first rotating the brush clockwise 90 degrees, so that the bristles are covered by the dust collecting box again, and then the brush and the dust collecting box continue to move upward to reset.

2. A method for removing dust from a condenser inside an air conditioning cabinet using a dust removal device according to claim 1, characterized in that: In step S3, the dust removal operation is performed only when the brush moves downward, and the dust falls on the bristles of the brush and in the dust collection box; in step S4, after the dust and moisture are discharged from the air conditioner, the bottom of the dust collection box is closed.

3. The method for removing dust from a condenser inside an air conditioner box using a dust removal device according to claim 1, characterized in that: In step S3, the dust removal strength of the brush is determined according to the humidity data of the condenser; in step S4, the corresponding impact timing is determined according to the position of the brush; and the impact strength and number of impacts are determined according to the humidity data of the condenser.

4. The method for removing dust from a condenser inside an air conditioner box using a dust removal device according to claim 1, characterized in that: In step S5, the rotation speed of the fan is determined according to the humidity data of the condenser.

5. The method for removing dust from a condenser inside an air conditioner box using a dust removal device according to claim 1, characterized in that: When performing multiple dust removal operations, reverse the fan to blow the dust inside the condenser to the surface before performing dust removal operations. At the same time, when performing multiple dust removal operations, increase the dust removal intensity from small to large to remove the floating dust first.

6. The method for removing dust from a condenser inside an air conditioner box using a dust removal device according to claim 1, characterized in that: The device also includes an air-conditioning unit base plate that matches the condenser. The air-conditioning unit base plate is horizontally arranged below the dust collection box and is provided with a dust discharge hole opposite to the dust collection box. The brush is a soft brush and the bristle carrier plate of the brush is through-mounted on a cross bar. The left and right ends of the cross bar can be slidably mounted on two guide rods and are respectively threadedly connected to the two guide rods. The two guide rods are symmetrically fixed vertically to the upper surface of the air-conditioning unit base plate.

7. The method for removing dust from a condenser inside an air conditioner box using a dust removal device according to claim 1, characterized in that: The dust collecting box comprises a rectangular outer frame and a rotating bottom plate, the left and right outer walls of the rectangular outer frame are respectively connected with L-shaped connecting plates between the left and right bottom ends of the cross bar, the top and bottom of the rectangular outer frame are both open, the rotating bottom plate is arranged below the rectangular outer frame and protrudes forward relative to the rectangular outer frame, a hinge is connected between the side of the bottom of the rectangular outer frame away from the condenser and the rotating bottom plate, and the other side of the rotating bottom plate is connected to the top of the inner wall of the rectangular outer frame by a tension spring.

8. A method for removing dust from a condenser inside an air conditioner box using a dust removal device according to claim 7, characterized in that: The lower limit mechanism includes a lower limit block I, a lower limit block II, and a lower limit block III that abuts against the convex part of the rotating base plate. The lower limit block I, the lower limit block II and the lower limit block III are all fixed to the upper surface of the base plate of the air-conditioning unit, and the upper limit block I that abuts against the lower limit block I and the upper limit block II that abuts against the lower limit block II are fixed to the left and right ends of the bottom of the cross bar respectively.

9. The method for removing dust from a condenser inside an air conditioner box using a dust removal device according to claim 1, characterized in that: The rotation positioning mechanism is symmetrically provided with two and each includes a rotation limit plate, a positioning limit plate abutting against the rotation limit plate, and a torsion spring installed on the cross bar and abutting against the bristle support plate of the brush. The rotation limit plate is rotatably connected to the front side of the bristle support plate of the brush, and the positioning limit plate is vertically fixed to the bottom of the cross bar and is in an L-shaped structure with its opening facing the corresponding rotation limit plate.

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