Filtering structure of air conditioner evaporator

Abstract

The invention discloses an air conditioner evaporator filtering structure, and belongs to the technical field of control valves, the air conditioner evaporator filtering structure comprises a mounting box, the mounting box is mounted on an air conditioner, a filtering mechanism is mounted in the mounting box, the filtering mechanism is used for filtering air impurities entering the mounting box, and an evaporator is mounted in the mounting box close to the filtering mechanism; according to the air conditioner evaporator filtering structure, when the transmission belt rotates, the three sets of filter elements can be driven to rotate, the three sets of filter elements are different in hole diameter, and therefore the filter elements can be replaced according to different environments, and dust can be sucked into the upper cleaning box and the lower cleaning box through suction force generated by the air inlet head to be collected; the outer surface of the filter element can be cleaned conveniently when the filter element is cleaned, meanwhile, the inner side of the filter element can be cleaned, dust on the surface of the second cleaning brush can be scraped off through a scraper, and the first cleaning brush and the second cleaning brush can conduct self-cleaning conveniently after the surface of the filter element is cleaned.

Description

Technical Field

[0001] The invention relates to the technical field of air-conditioning evaporators, and in particular to a filtering structure of an air-conditioning evaporator. Background Art

[0002] The air conditioner evaporator is a type of evaporator. The function of the air conditioner evaporator is to use the liquid low-temperature refrigerant to evaporate easily under low pressure, turn into steam and absorb the heat of the cooled medium to achieve the purpose of refrigeration. When the air conditioner evaporator is in use, the air will cool the pipe. When the air cools the evaporator, it needs to be cooled through the filter structure to prevent impurities in the air from adhering to the surface of the evaporator.

[0003] Patent No. 202110028895.X discloses an air-conditioning evaporator filter structure for engineering machinery, including a fixed frame, a filter element, a groove, a telescopic cleaning mechanism and a collecting mechanism. The present invention sets a moving mechanism at the upper end of the fixed frame, and drives the moving frame and the moving plate to move through gears, thereby driving the brush plate at the upper end of the reciprocating telescopic mechanism to move horizontally, thereby achieving the advantage of being able to quickly clean the dust on the upper end of the filter element; by setting a cam mechanism at the upper end of the moving mechanism, the rotation of the rotating shaft drives the rotating rod to rotate, so that the second bevel gear drives the cam to rotate, thereby achieving the advantage of being able to quickly drive the cam to be linked; by setting a reciprocating contraction mechanism at the upper end of the moving plate, the cam rotates, so that the first sleeve and the second sleeve move synchronously back and forth toward and away from each other, so that the brush plate reciprocates up and down to brush. The advantage of being able to brush off the dust on the filter element is achieved. 1. The invention is an air-conditioning evaporator filter structure used on engineering machinery. The engineering machinery will work in different environments, and the sizes of impurity particles in the air of different environments will also be different, which can easily cause the filter element to have poor filtering effect or be blocked quickly, and it is inconvenient to replace the filter element according to different environments. 2. In the invention, the brush plate is used to clean the dust on the surface of the filter element through the moving mechanism and the telescopic cleaning mechanism. The brush plate will exert a certain pressure on the filter element when cleaning the filter element, so that the dust passes through the filtering aperture of the filter element and enters the inner side of the filter element, which will cause the filter element to be not cleaned cleanly. 3. When the brush plate in the invention is used for a long time, dust will adhere to its surface, and the brush plate needs to be disassembled and cleaned regularly, which is very troublesome. If the brush plate is not cleaned for a long time, it will also affect the cleaning effect. Summary of the invention

[0004] The object of the present invention is to provide an air-conditioning evaporator filter structure to solve the problem that the application scope of the current air-conditioning evaporator filter structure itself is limited as mentioned in the above background technology.

[0005] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme: The present invention provides an air conditioner evaporator filter structure, comprising: a mounting box, the mounting box is mounted on the air conditioner, a filter mechanism is installed inside the mounting box, the filter mechanism is used to filter air impurities entering the mounting box, an evaporator is installed inside the mounting box near the filter mechanism, The filtering mechanism also includes a replacement component rotatably mounted inside the installation box, a filter screen cleaning component movably mounted on the replacement component, and a self-cleaning component fixedly mounted on the filter screen cleaning component; The replacement assembly also includes a connecting strip rotatably installed inside the installation box, and a filter element fixedly installed between the connecting strips. The filter elements are provided in three groups, and the filter apertures of the three groups of filter elements decrease successively. The connecting strip is rotated by the operation of the driving motor. When the connecting strip rotates, the three groups of filter elements can be replaced according to different environments.

[0006] Preferably, three driven shafts rotate inside the installation box, a driving shaft is rotatably installed through the upper part of the installation box, a driving motor is installed at the end of the driving shaft, and the driving motor is installed on the side of the installation box, and pulleys are fixedly installed at both ends of the three driven shafts and both ends of the one driving shaft.

[0007] Preferably, the pulleys are connected in groups of two by belts, a transmission belt is connected between the four groups of pulleys, two groups of transmission belts are provided, a filter element is installed between the two groups of transmission belts, and the three groups of filter elements are connected by a connecting strip.

[0008] Preferably, the filter cleaning assembly comprises: an arcuate guide groove, the arcuate guide groove is opened on the surface of the transmission belt, a guide block is movably connected inside the arcuate guide groove, an upper cleaning box is fixedly connected to the end of the guide block near the top of the transmission belt, a lower cleaning box is fixedly connected to the end of the guide block near the top of the inner side of the transmission belt, the sides of the upper cleaning box and the lower cleaning box are fixedly connected with sliders, the inner side of the slider is movably connected with a sliding rod through a sliding groove, and one end of the sliding rod is fixedly connected to the inner side of the mounting box.

[0009] Preferably, an air intake pipe is fixedly installed on the inner side of the upper cleaning box and the lower cleaning box through an assembly groove, and a plurality of groups of air intake heads are fixedly installed at equal distances on the surface of the air intake pipe. The end of the air intake pipe is connected to one end of a bellows, and the side of the bellows passes through the surface of the installation box through an assembly groove. The other end of the bellows is connected to a delivery pipe, and the input end of the delivery pipe is installed on the end of the delivery pipe, and the bottom of the air pump is installed on the top of the installation box.

[0010] Preferably, the upper cleaning box and the lower cleaning box are fixedly connected with an isolation net on the inner side near the air inlet pipe, the upper cleaning box is provided with an ash inlet at the bottom, the upper cleaning box is provided with a connecting port at the bottom near the ash inlet, a cleaning brush is movably connected to the inner side of the connecting port, and a guide plate is fixedly connected to the inner side of the upper cleaning box near the ash inlet.

[0011] Preferably, the top of the lower cleaning box is provided with an ash inlet No. 2, the inner side of the ash inlet No. 2 is rotatably connected to a rotating shaft No. 1, the surface of the rotating shaft No. 1 is connected to a cleaning brush No. 2, the surface of the rotating shaft No. 1 is provided with an operating groove, the inner side of the operating groove is fixedly connected to a tooth block, and the inner side of the ash inlet No. 2 is fixedly connected to a mounting frame.

[0012] Preferably, a double-headed motor is fixedly mounted on the mounting frame, and a gear matching the tooth block is fixedly connected to the output end of the double-headed motor near the operating slot, a guide block is fixedly connected to the inner bottom of the lower cleaning box, and collection boxes are movably mounted on the inner sides of the lower cleaning box and the upper cleaning box through assembly slots, and a taking port is opened on the side of the mounting box near the collection box.

[0013] Preferably, the self-cleaning component comprises: a cylinder, wherein the cylinder is mounted on the top of the upper cleaning box, the output end of the cylinder passes through the top of the upper cleaning box through an assembly groove, the output end of the cylinder is fixedly connected to a mounting box, the side of the mounting box is movably connected to the inner side of the upper cleaning box, a motor is mounted on the top of the mounting box, and the output end of the motor passes through the top of the mounting box through the assembly groove.

[0014] Preferably, the output end of the motor is fixedly connected to bevel gear 1, the inner side of the installation box is rotatably connected to rotating shaft 2 through an assembly groove, the upper surface of rotating shaft 2 is fixedly connected to bevel gear 2 matching bevel gear 1, a fixing seat is installed at one end of rotating shaft 2, the bottom of the fixing seat is fixedly connected to the top of cleaning brush 1, a scraping groove is provided on the surface of the guide plate close to the left side of the upper cleaning box, and a scraper is fixedly connected to the surface of the isolation net close to cleaning brush 2.

[0015] Compared with the prior art, one or more of the above technical solutions have the following beneficial effects: 1. A driving motor is provided to drive the pulley to rotate through the driving shaft. When the pulley rotates, the other pulleys can be driven to rotate through the transmission of the belt. When the pulley rotates, the transmission belt on the surface can be driven to rotate. When the transmission belt rotates, three groups of filter elements can be driven to rotate. The apertures of the three groups of filter elements are different, so that the filter elements can be replaced according to different environments; 2. A cleaning brush 1 and a cleaning brush 2 are provided to clean the upper and lower parts of the filter element respectively while the filter element is rotating. The cleaning brush 1 and the cleaning brush 2 will generate dust while cleaning the filter element. The air intake head can generate suction through the work of the air pump. The suction generated by the air intake head can suck the dust into the upper cleaning box and the lower cleaning box for collection, so that the filter element can be cleaned not only on its outer surface but also on the inner side of the filter element; 3. A cylinder is provided to put the cleaning brush 1 into the upper cleaning box, and the motor is used to rotate the cleaning brush 1. When the cleaning brush 1 rotates to the side of the scraping groove, the scraping groove can scrape off the dust adhering to the surface of the cleaning brush 1, and the dust on the surface of the cleaning brush 2 can be scraped off by the scraper, so that the cleaning brush 1 and the cleaning brush 2 can perform self-cleaning after cleaning the surface of the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a three-dimensional structural schematic diagram of the replacement component of the present invention from a first perspective; Figure 3 It is a schematic diagram of the three-dimensional structure of the replacement component of the present invention from the second viewing angle; Figure 4 It is a schematic diagram of the three-dimensional exploded structure of the filter cleaning assembly of the present invention; Figure 5 It is a schematic diagram of the side cross-sectional structure of the filter cleaning assembly of the present invention; Figure 6 It is a schematic diagram of the three-dimensional cross-sectional structure of the filter cleaning assembly of the present invention; Figure 7 It is a schematic diagram of the three-dimensional cross-sectional structure of the self-cleaning component of the present invention; Figure 8 The present invention Figure 4 A schematic diagram of the enlarged structure of part A; Fig. 9 The present invention Figure 6 A schematic diagram of the enlarged structure of part B; In the figure: 1. Installation box; 2. Filter mechanism; 21. Replacement assembly; 211. Driven shaft; 212. Drive shaft; 213. Drive motor; 214. Pulley; 215. Belt; 216. Transmission belt; 217. Filter element; 218. Connecting strip; 22. Filter cleaning assembly; 221. Arc guide groove; 222. Guide block; 223. Upper cleaning box; 224. Lower cleaning box; 225. Slider; 226. Sliding rod; 227. Inlet pipe; 228. Inlet head; 229. Bellows; 2210. Delivery pipe; 2211. Air pump; 2212. Isolation net; 2213. Ash inlet port 1; 2214 , connection port; 2215, cleaning brush one; 2216, guide plate; 2217, ash inlet two; 2218, rotating shaft one; 2219, cleaning brush two; 2220, operating slot; 2221, gear block; 2222, mounting bracket; 2223, double-headed motor; 2224, gear; 2225, guide block; 2226, collecting box; 2227, taking port; 23, self-cleaning component; 231, cylinder; 232, mounting box; 233, motor; 234, bevel gear one; 235, rotating shaft two; 236, bevel gear two; 237, fixing seat; 238, scraping slot; 239, scraper; 3, evaporator. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0019] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0020] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0021] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0022] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0023] See also Figure 1 The present invention provides an embodiment: an air conditioner evaporator filter structure, comprising: an installation box 1, the installation box 1 is installed on the air conditioner, a filter mechanism 2 is installed inside the installation box 1, the filter mechanism 2 is used to filter air impurities entering the installation box 1, and an evaporator 3 is installed inside the installation box 1 near the filter mechanism 2.

[0024] It should be understood that air can enter the interior through the opening of the installation box 1. When entering the interior of the installation box 1, the air will pass through the filter mechanism 2. When passing through the filter mechanism 2, impurities in the air can be filtered. After the air is filtered, the evaporator 3 inside the installation box 1 can be cooled.

[0025] like Figure 1-Figure 3As shown, the filter mechanism 2 also includes a replacement component 21 rotatably installed inside the installation box 1, and the replacement component 21 also includes a connecting strip 218 rotatably installed inside the installation box 1, and a filter element 217 fixedly installed between the connecting strips 218. The filter element 217 is provided with three groups, and the filter apertures of the three groups of filter elements 217 decrease in sequence. The connecting strip 218 is rotated by the operation of the driving motor. When the connecting strip 218 rotates, the three groups of filter elements 217 can be replaced according to different environments. The three driven shafts 211 are rotated inside the installation box 1, and the inside of the installation box 1 A driving shaft 212 is rotatably installed through the upper part, and a driving motor 213 is installed at the end of the driving shaft 212. The driving motor 213 is installed on the side of the installation box 1. Pulleys 214 are fixedly installed at both ends of the three driven shafts 211 and both ends of the one driving shaft 212. The pulleys 214 are connected in groups of two by belts 215. A transmission belt 216 is connected between the four groups of pulleys 214. Two groups of transmission belts 216 are provided. A filter element 217 is installed between the two groups of transmission belts 216. The three groups of filter elements 217 are connected by a connecting strip 218.

[0026] It is worth noting that when the driving motor 213 is working, it can drive the driving shaft 212 to rotate. When the driving shaft 212 rotates, it can drive the pulley 214 on the surface to rotate. When the pulley 214 rotates, it can drive the remaining pulleys 214 to rotate through the belt 215. When the pulley 214 rotates, it can drive the driven shaft 211 to rotate. When the driven shaft 211 rotates, it can rotate inside the installation box 1. When the pulley 214 rotates, it can drive the transmission belt 216 to rotate. When the transmission belt 216 rotates, the three sets of filter elements 217 can be replaced according to different environments.

[0027] like Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 8 and Fig. 9As shown, and the filter cleaning assembly 22 movably installed on the replacement assembly 21, the filter cleaning assembly 22 includes: an arcuate guide groove 221, the arcuate guide groove 221 is opened on the surface of the transmission belt 216, and a guide block 222 is movably connected inside the arcuate guide groove 221. The end of the guide block 222 close to the top of the transmission belt 216 is fixedly connected to an upper cleaning box 223, and the end of the guide block 222 close to the top of the inner side of the transmission belt 216 is fixedly connected to a lower cleaning box 224. The sides of the upper cleaning box 223 and the lower cleaning box 224 are fixedly connected to a slider 225, and the inner side of the slider 225 is movably connected to a slide rod 226 through a slide groove. One end of the rod 226 is fixedly connected to the inner side of the installation box 1, and the inner sides of the upper cleaning box 223 and the lower cleaning box 224 are fixedly installed with an air intake pipe 227 through an assembly groove. A plurality of groups of air intake heads 228 are fixedly installed at equal distances on the surface of the air intake pipe 227. The end of the air intake pipe 227 is connected to one end of a bellows 229, and the side of the bellows 229 passes through the surface of the installation box 1 through an assembly groove. The other end of the bellows 229 is connected to a delivery pipe 2210, and the end of the delivery pipe 2210 is installed with the input end of an air pump 2211. The bottom of the air pump 2211 is installed on the top of the installation box 1. The upper cleaning box 223 and the lower cleaning box 224 are close to each other. The inner side of the air inlet pipe 227 is fixedly connected with an isolation net 2212, the bottom of the upper cleaning box 223 is provided with an ash inlet 2213, the bottom of the upper cleaning box 223 near the ash inlet 2213 is provided with a connecting port 2214, the inner side of the connecting port 2214 is movably connected with a cleaning brush 2215, the inner side of the upper cleaning box 223 near the ash inlet 2213 is fixedly connected with a guide plate 2216, the top of the lower cleaning box 224 is provided with an ash inlet 2217, the inner side of the ash inlet 2217 is rotatably connected with a rotating shaft 2218, the surface of the rotating shaft 2218 is connected with a cleaning brush 2219, and the surface of the rotating shaft 2218 is connected with a cleaning brush 2219. An operating slot 2220 is provided, a tooth block 2221 is fixedly connected to the inner side of the operating slot 2220, a mounting frame 2222 is fixedly connected to the inner side of the ash inlet 2217, a double-headed motor 2223 is fixedly installed on the mounting frame 2222, a gear 2224 matching the tooth block 2221 is fixedly connected to the output end of the double-headed motor 2223 near the operating slot 2220, a guide block 2225 is fixedly connected to the inner bottom of the lower cleaning box 224, collecting boxes 2226 are movably installed on the inner sides of the lower cleaning box 224 and the upper cleaning box 223 through assembly slots, and a taking port 2227 is provided on the side of the mounting box 1 near the collecting box 2226.

[0028] It can be imagined that when the transmission belt 216 rotates, it can drive the arc guide groove 221 to move. When the arc guide groove 221 moves, it can push the guide block 222 back and forth. When the guide block 222 is pushed back and forth, it can drive the upper cleaning box 223 and the lower cleaning box 224 to move back and forth. When the upper cleaning box 223 and the lower cleaning box 224 move back and forth, they can drive the slider 225 on their surface to move. When the slider 225 moves, it can slide on the surface of the slide bar 226. When the upper cleaning box 223 moves back and forth, it can drive the cleaning brush 2215 to move back and forth. When the cleaning brush 2215 moves back and forth, it can reciprocate and clean the impurities on the surface of the filter element 217 while the filter element 217 rotates. The cleaning brush 2215 will generate a top-down pressure while cleaning the filter element 217. The pressure generated by the cleaning brush 2215 will squeeze the dust through the filtering aperture of the filter element 217 to the lower part of the filter element 217. At the same time, the double-headed motor 2223 can work When the gear 2224 rotates, the gear 2224 can drive the tooth block 2221 to mesh and rotate. When the tooth block 2221 meshes and rotates, it can drive the shaft 1 2218 to rotate. When the shaft 1 2218 rotates, it can rotate in the ash inlet 2217. When the shaft 1 2218 rotates, it can drive the cleaning brush 2219 to rotate. When the cleaning brush 2219 rotates, the dust at the bottom of the filter element 217 can be cleaned. The cleaning brush 1 2215 and the cleaning brush While the filter element 217 is being cleaned, the air pump 2211 is working. The air pump 2211 will generate strong suction when working. The suction generated by the air pump 2211 can suck the cleaned dust into the inner cavity of the upper cleaning box 223 and the lower cleaning box 224 through the delivery pipe 2210, the bellows 229, the air inlet pipe 227 and the air inlet head 228, and collect it through the collection box 2226. When the collection box 2226 is full, it can be taken out and dumped through the taking port 2227.

[0029] like Figure 5 , Figure 7 and Fig. 9As shown, the self-cleaning component 23 fixedly mounted on the filter cleaning component 22, the self-cleaning component 23, includes: a cylinder 231, the cylinder 231 is mounted on the top of the upper cleaning box 223, the output end of the cylinder 231 passes through the top of the upper cleaning box 223 through the assembly slot, the output end of the cylinder 231 is fixedly connected to the installation box 232, the side of the installation box 232 is movably connected to the inner side of the upper cleaning box 223, the top of the installation box 232 is installed with a motor 233, the output end of the motor 233 passes through the top of the installation box 232 through the assembly slot, the motor 23 The output end of 3 is fixedly connected with a bevel gear 1 234, the inner side of the mounting box 232 is rotatably connected with a rotating shaft 235 through an assembly groove, the upper surface of the rotating shaft 235 is fixedly connected with a bevel gear 236 matching the bevel gear 1 234, one end of the rotating shaft 235 is installed with a fixing seat 237, the bottom of the fixing seat 237 is fixedly connected to the top of the cleaning brush 1 2215, the surface of the guide plate 2216 close to the left side of the upper cleaning box 223 is provided with a scraping groove 238, and the surface of the isolation net 2212 close to the cleaning brush 2219 is fixedly connected with a scraper 239.

[0030] It can be imagined that when the cleaning brush 1 2215 has finished cleaning the dust on the upper part of the filter element 217, the cylinder 231 can drive the installation box 232 to move upward, and when the installation box 232 moves, it can drive the cleaning brush 1 2215 to move upward through the rotating shaft 235 and the fixing seat 237. When the cleaning brush 1 2215 moves to the specified position, the motor 233 can drive the bevel gear 1 234 at the output end to rotate. When the bevel gear 1 234 rotates, it can drive the bevel gear 2 236 to mesh and rotate. When the bevel gear 236 meshes and rotates, it can drive the rotating shaft 235 to rotate. The rotating shaft 235 is rotated. When 235 rotates, it can drive the fixed seat 237 to rotate. When the fixed seat 237 rotates, it can drive the cleaning brush 1 2215 to rotate rightward. When the cleaning brush 1 2215 rotates to the upper part of the scraping groove 238, the scraping groove 238 can scrape the dust adhered to the cleaning brush 1 2215 into the inside of the collection box 2226. At the same time, when the cleaning brush 2219 rotates to clean the inner side of the filter element 217, the scraper 239 will scrape the dust adhered to the surface of the cleaning brush 2219 into the inside of the collection box 2226, so that the cleaning brush 2219 and the cleaning brush 2219 can have a self-cleaning function when cleaning.

[0031] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An air conditioner evaporator filter structure, comprising: An installation box (1), the installation box (1) being installed on an air conditioner, a filter mechanism (2) being installed inside the installation box (1), the filter mechanism (2) being used to filter air impurities entering the interior of the installation box (1), an evaporator (3) being installed inside the installation box (1) near the filter mechanism (2), characterized in that: The filtering mechanism (2) further comprises a replacement component (21) rotatably mounted inside the installation box (1), a filter screen cleaning component (22) movably mounted on the replacement component (21), and a self-cleaning component (23) fixedly mounted on the filter screen cleaning component (22); The replacement assembly (21) further comprises a connecting strip (218) rotatably mounted inside the installation box (1), and a filter element (217) fixedly mounted between the connecting strips (218); the filter elements (217) are provided in three groups, and the filter apertures of the three groups of filter elements (217) decrease in sequence; the connecting strip (218) is rotated by the operation of a driving motor, and when the connecting strip (218) is rotated, the three groups of filter elements (217) can be replaced according to different environments.

2. The air conditioner evaporator filter structure according to claim 1, characterized in that: Three driven shafts (211) rotate inside the installation box (1), a driving shaft (212) is rotatably installed through the upper part of the installation box (1), a driving motor (213) is installed at the end of the driving shaft (212), and the driving motor (213) is installed on the side of the installation box (1), and pulleys (214) are fixedly installed at both ends of the three driven shafts (211) and the one driving shaft (212).

3. The air conditioner evaporator filter structure according to claim 2, characterized in that: The pulleys (214) are connected in groups of two by belts (215); a transmission belt (216) is connected between the four groups of pulleys (214); two groups of the transmission belt (216) are provided; a filter element (217) is installed between the two groups of the transmission belts (216); and the three groups of the filter elements (217) are connected by a connecting strip (218).

4. The air conditioner evaporator filter structure according to claim 3, characterized in that: The filter cleaning assembly (22) comprises: an arc-shaped guide groove (221), wherein the arc-shaped guide groove (221) is formed on the surface of the transmission belt (216), a guide block (222) is movably connected inside the arc-shaped guide groove (221), an upper cleaning box (223) is fixedly connected to the end of the guide block (222) close to the top of the transmission belt (216), a lower cleaning box (224) is fixedly connected to the end of the guide block (222) close to the inner top of the transmission belt (216), a slider (225) is fixedly connected to the side surfaces of the upper cleaning box (223) and the lower cleaning box (224), a slide bar (226) is movably connected to the inner side of the slide bar (225) via a slide groove, and one end of the slide bar (226) is fixedly connected to the inner side of the installation box (1).

5. The air conditioner evaporator filter structure according to claim 4, characterized in that: An air intake pipe (227) is fixedly mounted on the inner side of the upper cleaning box (223) and the lower cleaning box (224) via an assembly groove; a plurality of groups of air intake heads (228) are fixedly mounted at equal distances on the surface of the air intake pipe (227); an end of the air intake pipe (227) is connected to one end of a bellows (229); a side surface of the bellows (229) penetrates the surface of the installation box (1) via an assembly groove; the other end of the bellows (229) is connected to a delivery pipe (2210); an input end of an air pump (2211) is mounted on the end of the delivery pipe (2210); and the bottom of the air pump (2211) is mounted on the top of the installation box (1).

6. The air conditioner evaporator filter structure according to claim 5, characterized in that: An isolation net (2212) is fixedly connected to the inner side of the upper cleaning box (223) and the lower cleaning box (224) near the air inlet pipe (227); an ash inlet port (2213) is provided at the bottom of the upper cleaning box (223); a connecting port (2214) is provided at the bottom of the upper cleaning box (223) near the ash inlet port (2213); a cleaning brush (2215) is movably connected to the inner side of the connecting port (2214); and a guide plate (2216) is fixedly connected to the inner side of the upper cleaning box (223) near the ash inlet port (2213).

7. The air conditioner evaporator filter structure according to claim 6, characterized in that: The top of the lower cleaning box (224) is provided with an ash inlet No. 2 (2217), the inner side of the ash inlet No. 2 (2217) is rotatably connected to a rotating shaft No. 1 (2218), the surface of the rotating shaft No. 1 (2218) is connected to a cleaning brush No. 2 (2219), the surface of the rotating shaft No. 1 (2218) is provided with an operating groove (2220), the inner side of the operating groove (2220) is fixedly connected to a tooth block (2221), and the inner side of the ash inlet No. 2 (2217) is fixedly connected to a mounting frame (2222).

8. The air conditioner evaporator filter structure according to claim 7, characterized in that: A double-headed motor (2223) is fixedly mounted on the mounting frame (2222); a gear (2224) matching the gear block (2221) is fixedly connected to the output end of the double-headed motor (2223) near the operating slot (2220); a guide block (2225) is fixedly connected to the inner bottom of the lower cleaning box (224); collection boxes (2226) are movably mounted on the inner sides of the lower cleaning box (224) and the upper cleaning box (223) via assembly slots; and a taking-out opening (2227) is provided on the side of the mounting box (1) near the collection box (2226).

9. The air conditioner evaporator filter structure according to claim 6, characterized in that: The self-cleaning component (23) comprises: a cylinder (231), the cylinder (231) being mounted on the top of the upper cleaning box (223), the output end of the cylinder (231) penetrating the top of the upper cleaning box (223) through an assembly slot, the output end of the cylinder (231) being fixedly connected to a mounting box (232), the side of the mounting box (232) being movably connected to the inner side of the upper cleaning box (223), a motor (233) being mounted on the top of the mounting box (232), the output end of the motor (233) penetrating the top of the mounting box (232) through the assembly slot.

10. The air conditioner evaporator filter structure according to claim 9, characterized in that: The output end of the motor (233) is fixedly connected to a bevel gear 1 (234); the inner side of the installation box (232) is rotatably connected to a rotating shaft 2 (235) passing through an assembly groove; the upper surface of the rotating shaft 2 (235) is fixedly connected to a bevel gear 2 (236) matching the bevel gear 1 (234); a fixing seat (237) is installed at one end of the rotating shaft 2 (235); the bottom of the fixing seat (237) is fixedly connected to the top of the cleaning brush 1 (2215); a scraping groove (238) is formed on the surface of the guide plate (2216) close to the left side of the upper cleaning box (223); and a scraper (239) is fixedly connected to the surface of the isolation net (2212) close to the cleaning brush 2 (2219).

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