A portable air conditioning unit

Abstract

This invention relates to the technical field of air conditioning, specifically disclosing a portable air conditioning unit, including a water curtain and a filter screen installed inside the unit. The unit contains a water tank, a control component, a cleaning frame, and a winding component. The water tank is located below the water curtain, and a drain pipe communicating with the water tank is located on the side of the unit. The control component is installed inside the water tank. The cleaning frame is slidably mounted inside the water tank, with its upper part abutting against the side of the filter screen. The winding component is connected to the end of the filter screen to move the filter screen left and right above the cleaning frame. When the filter screen moves to the left, the cleaning frame, in conjunction with the water in the water tank, cleans the filter screen. When it moves to the right, the filter screen moves the cleaning frame to the right in conjunction with the control component, opening the drain pipe to discharge the cleaned impurities and water. This portable air conditioning unit reduces the frequency of filter screen removal and allows for rapid filter screen cleaning.

Description

Technical Field

[0001] This invention relates to the technical field of air conditioning, and more specifically to a portable air conditioning unit. Background Technology

[0002] Air conditioners can be categorized into many types based on their technical principles and application scenarios. Among them, portable air conditioners are designed with casters, allowing them to be moved to any location. These are also known as portable evaporative air coolers. A water curtain is installed inside the portable evaporative air cooler. Water flows through the water curtain, forming a uniform water film. When hot air passes through the moistened curtain, the water evaporates, absorbing heat from the air and achieving physical cooling.

[0003] Patent document CN218627092U discloses an integrated unit portable air conditioner; it includes a cabinet, a first fan, a second fan, and a condenser, compressor, evaporator, and expansion valve that are connected in a circulating manner; the cabinet has a separate upper cavity and a lower cavity inside, the first fan is installed in the upper cavity, the front side wall of the upper cavity has an air outlet facing the first fan, the other three side walls of the upper cavity have air inlets, and the inner side of each of the three side walls is provided with a first water curtain; the cross-sectional shape of the evaporator and the cross-sectional shape of the condenser are both U-shaped, the evaporator is installed in the cooling cavity surrounded by the three first water curtains and the first fan, and the three side walls of the evaporator are respectively opposite to the three first water curtains. By operating the first fan, the air outside the cabinet flows through the air inlet, the first water curtain, the evaporator and the first fan and is discharged from the air outlet.

[0004] However, this solution also has the following problems: Besides cooling the flowing air, the water curtain's honeycomb structure can also adsorb pollutants such as dust and odors from the air, outputting clean air. Additionally, a filter is needed to intercept large particles of pollutants. The filter and water curtain work together to achieve efficient dust removal. However, after intercepting impurities, the filter is prone to clogging its pores, reducing evaporation efficiency and affecting the cooling efficiency of the air, requiring frequent disassembly and cleaning. Summary of the Invention

[0005] This invention provides a portable air conditioning unit, which aims to solve the problem in related technologies where the filter screen is prone to clogging and needs to be frequently disassembled for cleaning.

[0006] The portable air conditioning unit of the present invention includes a water curtain and a filter screen disposed within the unit body. The unit body contains a water tank, a control component, a cleaning frame, and a winding component. The water tank is located below the water curtain, and a drain pipe communicating with the water tank is provided on the side of the unit body. The control component is disposed within the water tank to control the closure of the drain pipe. The cleaning frame is slidably mounted left and right within the water tank, with its upper part abutting against the side of the filter screen. The winding component is connected to the end of the filter screen to drive the filter screen to move left and right above the cleaning frame. Initially, the drain pipe is closed, and the cleaning frame and the portion of the filter screen that mates with the cleaning frame are immersed in water. When the filter screen moves to the left, the cleaning frame, in conjunction with the water in the water tank, cleans the filter screen. When it moves to the right, the filter screen drives the cleaning frame to move to the right, cooperating with the control component to open the drain pipe, thereby discharging water and impurities from the water tank through the drain pipe.

[0007] Its effect is that, during normal operation, air passes through a filter and a water curtain in sequence. The filter removes impurities from the air, while the water curtain cools it. The water curtain continuously supplies water during operation. When cleaning the filter is needed, the water tank is filled, immersing the filter against the cleaning frame. The retracting assembly then moves the filter to the left, allowing the cleaning frame to engage with different positions on the filter, scraping away impurities. The filter remains submerged in water, which cleans it. When the filter moves to the right, friction causes the cleaning frame to move to the right, engaging with the control component to open the drain pipe. Impurities and water are then discharged through the drain pipe. Additionally, during drainage, water continuously flows into the water curtain, rinsing the filter below and improving cleaning efficiency while reducing the frequency of filter disassembly, enabling rapid filter cleaning.

[0008] Preferably, the water tank includes a connecting part, a middle part, and a placement part. The connecting part is located below the middle part, and the placement part is located to the left of the middle part. The drain pipe is connected to the connecting part. The machine body is provided with a water outlet pipe connected to the middle part. The water flowing out from below the water curtain is discharged through the middle part and the water outlet pipe. When cleaning the filter screen, the water outlet pipe is blocked to increase the water storage capacity in the water tank, so that the cleaning frame is located below the water level. The control component is located between the middle part and the connecting part.

[0009] During normal operation, the outlet pipe opens, allowing water from the bottom of the water curtain to enter the middle section and then exit through the outlet pipe. This water can be recycled. When cleaning the filter, the outlet pipe closes, ensuring the water level in the tank is above the cleaning frame. As the cleaning frame moves to the right, it engages with the control components to connect the middle section to the connecting section, opening the drain pipe to discharge impurities and water containing impurities. This prevents wastewater generated during cleaning from entering the circulation system, reducing the risk of clogging the water curtain.

[0010] Preferably, a sliding groove is provided on the side wall of the water tank. The control component includes a control plate and a spring. The control plate is slidably mounted in the sliding groove. The spring is set in the sliding groove and connected to the control plate. The spring drives the control plate to slide between the middle part and the connecting part. When the control plate is completely slid between the middle part and the connecting part, the drain pipe is in the closed state.

[0011] The spring mechanism moves the control plate to abut against the inner wall of the water tank, separating the middle part from the connecting part, thus closing the drain pipe. When the cleaning frame moves above the connecting part, it moves the control plate into the chute, connecting the middle part with the connecting part and opening the drain pipe.

[0012] Preferably, the cleaning frame slides left and right within the placement section and the middle section. A push rod is provided on the cleaning frame, and a stop rod is provided on the side of the control plate away from the spring. The push rod and the stop rod are set in the same horizontal direction. When the cleaning frame moves to the right, the push rod and the stop rod work together to drive the control plate to move, so as to open the drain pipe.

[0013] As the cleaning frame moves to the right, the push rod moves accordingly. When the push rod moves to contact the stop rod, the stop rod drives the control plate to move into the chute, thereby controlling the closure of the drain pipe.

[0014] Preferably, the cleaning frame includes multiple scrapers arranged horizontally, with the height of the multiple scrapers gradually increasing in the direction away from the control component.

[0015] By setting multiple scrapers of different heights, the force of each scraper against the filter screen gradually increases, and the scraping force on the filter screen gradually increases as it passes each scraper, thus improving the cleaning effect on the filter screen.

[0016] Preferably, two sets of winding components are provided at intervals at the upper and lower ends of the water curtain, and the winding components are located on one side of the water curtain, with the two ends of the filter screen passing around the upper and lower ends of the water curtain and connecting to the winding components.

[0017] Two sets of winding components are set up, one above the other. One set of winding components winds up the filter screen, while the other set unwinds the filter screen. The two sets of winding components work together alternately to drive the filter screen to move back and forth.

[0018] Preferably, the machine body is equipped with an installation frame that slides up and down, the water curtain is installed in the installation frame, the machine body is provided with a pusher, the output end of the pusher is connected to the installation frame to drive the installation frame to move up and down, the bottom of the installation frame is provided with a pressing part, the pressing part is arranged in the horizontal direction, the installation frame moves down and presses the filter screen through the pressing part to make it abut against the cleaning frame, and at the same time drives the filter screen to be immersed in the water.

[0019] The pushing component moves the mounting frame downwards, which in turn moves the pressing part downwards. The pressing part then causes the filter screen below it to come into contact with the cleaning frame, ensuring that all filter screens passing under the pressing part can come into contact with the cleaning frame for cleaning.

[0020] Preferably, the cleaning frame also includes a mounting bracket, on which the scraper and push rod are mounted. A through groove is formed between two adjacent scrapers to allow impurities to pass through. When the scraper is in the placement section, the bottom of the scraper slides against the bottom wall of the placement section.

[0021] When the filter screen passes the scraper, the scraper removes the impurities on the filter screen and the removed impurities enter the through groove. When the scraper moves above the connecting part, the impurities in the scraper pass through the bottom of the scraper and enter the connecting part so that the impurities can be discharged and collected.

[0022] Preferably, the side of the mounting frame has multiple openings that run through the frame and are evenly distributed on the frame, allowing the flowing air to come into contact with the water curtain.

[0023] The circulating air enters the installation frame through the vents and comes into contact with the water film on the water curtain. At the same time, multiple vents are evenly distributed, which makes the flowing gas more fully contacted with the water curtain and ensures the cooling effect on the circulating gas.

[0024] Preferably, the bottom of the mounting frame has a water outlet that is connected to the inside of the mounting frame. The water curtain is located above the water outlet, and the water in the water curtain flows out through the bottom of the water curtain and the water outlet.

[0025] Water enters the water curtain from the top and flows out through the outlet at the bottom of the water curtain, rinsing the filter screen.

[0026] Beneficial effects:

[0027] 1. This invention provides a cleaning frame below the filter screen. When the winding assembly moves the filter screen to the left, it passes through the cleaning frame, which scrapes away impurities adhering to the filter screen. When the winding assembly moves the filter screen to the right, it works in conjunction with the control board to open the drain pipe, allowing impurities and water containing impurities in the water tank to be discharged from the drain pipe. At the same time, water flowing from the bottom of the water curtain backwashes the filter screen, achieving cleaning without disassembling it, reducing the difficulty of cleaning operations, and facilitating the cleaning of the filter screen.

[0028] 2. A wastewater pipe is installed on the machine body, connecting to the connecting section, and a drain pipe is installed, connecting to the intermediate section. During normal operation, water flowing from below the water curtain enters the intermediate section and then flows out through the outlet pipe. When cleaning the filter screen, the outlet pipe is closed. As the filter screen moves to the left, a scraper, in conjunction with the water in the tank, scrapes away impurities from the filter screen while simultaneously cleaning it. As the filter screen moves to the right, the drain pipe is opened, allowing impurities and water to be discharged. This ensures that circulating water only circulates through the outlet pipe, while water containing impurities is discharged through the drain pipe. These separate treatments reduce the likelihood of cleaning impurities entering the water curtain, thus minimizing clogging. Attached Figure Description

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0030] Figure 2 This is a cross-sectional view of the body in this invention.

[0031] Figure 3 yes Figure 2 A schematic diagram of the structure at point A in the middle.

[0032] Figure 4 This is a schematic diagram of the structure of the sewage pipe and the water outlet pipe in this invention.

[0033] Figure 5 This is a partial exploded view of the cleaning frame and filter screen in this invention.

[0034] Figure 6 This is a schematic diagram of the cleaning frame and control panel in this invention.

[0035] Figure 7 It is a structural schematic diagram of the installation frame in the present invention.

[0036] Figure 8 This is a cross-sectional view of the mounting frame in this invention.

[0037] Figure label:

[0038] 1. Body; 11. Air inlet; 12. Air outlet; 13. Drain pipe; 14. Water outlet pipe; 15. Fan; 16. Casters; 2. Water curtain; 21. Water inlet pipe; 3. Filter screen; 4. Water tank; 41. Connecting part; 411. Slide groove; 42. Middle part; 43. Placement part; 5. Control components; 51. Control board; 52. Spring; 6. Cleaning frame; 61. Mounting bracket; 62. Scraper; 621. Through groove; 7. Rewinding assembly; 71. Housing; 8. Push rod; 81. Stop bar; 9. Mounting frame; 91. Pushing component; 92. Pressing part; 93. Through port; 94. Water outlet. Detailed Implementation

[0039] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0040] like Figures 1 to 8 As shown, the portable air conditioning unit of the present invention includes a body 1 and a water curtain 2 and a filter screen 3 disposed within the body 1. A caster wheel 16 is provided at the bottom of the body 1, allowing the body 1 to be moved and placed in a designated position for operation. An air inlet 11 and an air outlet 12 are respectively provided on both sides of the body 1, with the air outlet 12 on the left side and the air inlet 11 on the right side. The air inlet 11 and the air outlet 12 are arranged in the same horizontal direction. The water curtain 2 and the filter screen 3 are disposed between the air inlet 11 and the air outlet 12, with the filter screen 3 positioned on the side of the water curtain 2 closer to the air inlet 11. Airflow enters the body 1 through the air inlet 11, passes through the filter screen 3 and the water curtain 2 in sequence, and is discharged through the air outlet 12. As the airflow passes through the water curtain 2, the water curtain 2 cools the airflow.

[0041] Reference Figure 2 , Figure 3 , Figure 5 The machine body 1 contains a water tank 4, a control component 5, a cleaning frame 6, and a winding component 7. The water tank 4 is located below the water curtain 2, and water flowing out from the bottom of the water curtain 2 can enter the water tank 4 for collection or discharge. The winding component 7 is connected to the filter screen 3 to move the filter screen 3. The cleaning frame 6 is slidably mounted in the water tank 4, sliding left and right within the water tank 4, with its top slidably abutting against the filter screen 3. A drain pipe 13 is provided on the machine body 1, communicating with the water tank 4. The control component 5 is located in the water tank 4 to control the closing of the drain pipe 13.

[0042] When cleaning of the filter screen 3 is required, the control component 5 closes the drain pipe 13, filling the water tank 4 with water until the cleaning frame 6 is completely below the water level. At this point, the part of the filter screen 3 in contact with the cleaning frame 6 is immersed in the water in the water tank 4. The winding component 7 moves the filter screen 3 to the left, causing various parts of the filter screen 3 to move past the cleaning frame 6. The cleaning frame 6 scrapes away impurities from the filter screen 3, and at the same time, the water in the water tank 4 cleans the filter screen 3.

[0043] Subsequently, the winding assembly 7 moves the filter screen 3 to the right. As the filter screen 3 comes into contact with the cleaning frame 6, it moves the cleaning frame 6 to the right until the cleaning frame 6 engages with the control assembly 5 to open the drain pipe 13. At this time, the water in the water tank 4 and the cleaned impurities are discharged through the drain pipe 13. Simultaneously, when the drain pipe 13 is open, the winding assembly 7 moves the filter screen 3 and simultaneously flows water into the water curtain 2. The water flows out from the bottom of the water curtain 2 to rinse the filter screen 3, further improving the cleaning effect on the filter screen 3.

[0044] Reference Figure 3 , Figure 4 The water tank 4 includes a connecting part 41, a middle part 42, and a placement part 43, all of which are interconnected. The connecting part 41 is located below the middle part 42, and the placement part 43 is located to the left of the middle part 42. A drain pipe 13 is connected to the connecting part 41. A water outlet pipe 14 is provided on the body 1 and is connected to the middle part 42. That is, the water outlet pipe 14 is located above the drain pipe 13. A control component 5 is located between the middle part 42 and the connecting part 41. When the control component 5 isolates the middle part 42 and the connecting part 41, the drain pipe 13 is in a closed state.

[0045] During normal operation, the control component 5 separates the intermediate section 42 and the connecting section 41. At this time, water cannot enter the drain pipe 13 through the connecting section 41, meaning the drain pipe 13 is in a closed state. The outlet pipe 14 is in an open state, and flowing air is discharged through the water curtain 2. At the same time, water is continuously supplied to the water curtain 2. The water enters the intermediate tank through the bottom of the water curtain 2, and then is discharged through the outlet pipe 14. A circulation pipe connected to the outlet pipe 14 can be installed on the outside of the machine body 1. The discharged water enters the circulation pipe and finally flows back into the water curtain 2 for water recycling.

[0046] When the filter screen 3 needs cleaning, the outlet pipe 14 is closed, and the water level in the water tank 4 gradually increases. When the water level in the water tank 4 is full, the water flow into the water curtain 2 is stopped. Then, the filter screen 3 is moved by the winding assembly 7 for cleaning. When the winding assembly 7 moves the filter screen 3 to the right, it moves the cleaning frame 6 to cooperate with the control assembly 5. The control assembly 5 controls the connection between the middle part 42 and the connecting part 41, so that the water in the water tank 4 is discharged through the connecting part 41 and the drain pipe 13. At the same time, water is flowed into the water curtain 2 again, and the water used for backwashing is also discharged through the drain pipe 13. By setting the control assembly 5, impurities and water containing impurities are discharged separately, preventing water containing impurities from entering the circulation and reducing the phenomenon of blockage in the water curtain 2.

[0047] Reference Figure 2 , Figure 3A groove 411 is provided on the side wall of the water tank 4, that is, the groove 411 is located between the middle part 42 and the connecting part 41. The control component 5 includes a control plate 51 and a spring 52. The control plate 51 is slidably mounted in the groove 411, and the control plate 51 slides left and right in the groove 411, that is, the sliding direction of the control plate 51 is the same as that of the cleaning frame 6. The spring 52 is located in the groove 411 and is a spring. The spring is set along the sliding direction of the control plate 51. One end of the spring 52 is connected to the inner wall of the groove 411, and the other end is connected to the control plate 51. The spring 52 drives the control plate 51 to move towards the outside of the groove 411, so that the control plate 51 abuts against the inner wall of the water tank 4 to isolate the middle part 42 and the connecting part 41. When the cleaning frame 6 slides to the right, it drives the control plate 51 to move to open the drain pipe 13.

[0048] Reference Figure 5 , Figure 6 The cleaning frame 6 is positioned within the placement section 43 and the intermediate section 42, and slides left and right between them. A push rod 8 is located at the bottom of the cleaning frame 6, and a stop rod 81 is located on the side of the control plate 51 opposite to the spring 52. The push rod 8 and the stop rod 81 are positioned in the same horizontal direction. Initially, the cleaning frame 6 is located within the placement section 43. When the filter screen 3 moves in the reverse direction, it moves the cleaning frame 6 to the right, closer to the control plate 51. Simultaneously, the push rod 8 and the stop rod 81 work together, causing the cleaning frame 6 to continue moving. This movement, via the push rod 8 and the stop rod 81, moves the control plate 51, compressing the spring 52 and adjusting the position of the control plate 51. After the filter screen 3 is cleaned, it moves the cleaning frame 6 back into the placement section 43. The push rod 8 separates from the stop rod 81, and the spring 52 moves the control plate 51 to its final position, closing the drain pipe 13 again.

[0049] Reference Figure 3 , Figure 5 , Figure 6 The cleaning frame 6 includes a mounting bracket 61 and a scraper 62. A push rod 8 is mounted on the mounting bracket 61. Multiple scrapers 62 are spaced apart on the left and right sides of the mounting frame 9, so that a through groove 621 for impurities to pass through is formed between every two scrapers 62. The lower end of the scraper 62 slides in cooperation with the bottom wall of the placement part 43, and the upper end of the scraper 62 abuts against the filter screen 3.

[0050] When the filter screen 3 moves to the left, the scraper 62 scrapes off the impurities on the filter screen 3. The scraped impurities enter the channel 621. At this time, the scraper 62 is located in the placement groove, and the impurities will be temporarily stored in the channel 621. When the filter screen 3 moves to the right, the scraper 62 moves above the connecting part 41. After the drain pipe 13 is opened, the impurities in the channel 621 flow downward with the water flow to quickly discharge the impurities.

[0051] Reference Figure 3 , Figure 5 , Figure 6 The scrapers 62 are arranged vertically, and their height gradually increases in the direction away from the control component 5. That is, the height of multiple scrapers 62 gradually increases from right to left, and the lower ends of multiple scrapers 62 are located in the same horizontal direction. All scrapers 62 abut against the filter screen 3. By setting the scrapers 62 at different heights, the contact force between the scrapers 62 and the filter screen 3 gradually increases. As the filter screen 3 moves, the multiple scrapers 62 at different heights clean the filter screen 3 to different degrees in sequence, improving the cleaning effect. In addition, the upper end of the scrapers 62 is pointed to reduce the contact area between the scrapers 62 and the filter screen 3, further improving the cleaning effect.

[0052] Reference Figure 2 , Figure 3 , Figure 5 The system includes two sets of winding components 7, each connected to both ends of the filter screen 3. One winding component 7 winds up the filter screen 3 while the other winds it up, and the two sets work alternately to move the filter screen 3 back and forth. The winding components 7 are located on the left side of the water curtain 2, with both ends of the filter screen 3 passing over the top and bottom of the water curtain 2 and connecting to the winding components 7. This ensures that when the filter screen 3 is wound up, it passes through the cleaning frame 6 located at the bottom of the water curtain 2.

[0053] Reference Figure 2 , Figure 3 , Figure 5 The winding assembly 7 includes a housing 71, a winding shaft, and a motor. The housing 71 is installed inside the machine body 1. The winding shaft and motor are respectively mounted on the housing 71 (the winding shaft and motor are not shown in the figure). The winding shaft is rotatably mounted inside the housing 71. An opening is provided on the side of the housing 71. The end of the filter screen 3 is wound around the winding shaft through the opening. The output end of the motor extends into the housing 71 and is fixedly connected to the winding shaft through a coupling. When cleaning the filter screen 3, the motors in the two winding assemblies 7 work synchronously and drive the winding shaft to rotate in opposite directions. That is, when one winding shaft winds up the filter screen 3, the other winding shaft unwinds the filter screen 3, so that the filter screen 3 moves through the cleaning frame.

[0054] Alternatively, a spare filter screen 3 can be wound onto one of the winding shafts. This means the length of the filter screen 3 is much longer than the required filtration length. If the filtration effect cannot be effectively improved after cleaning the filter screen 3, this portion of the filter screen 3 can be wound up using the winding shaft. Simultaneously, the spare filter screen 3 on the other winding shaft can be unwound and pulled to the side of the water curtain 2 for filtration. This reduces the frequency of disassembly and replacement of the filter screen 3.

[0055] Reference Figure 3 , Figure 5 , Figure 7 , Figure 8 An installation frame 9 is provided inside the body 1, and the installation frame 9 is slidably disposed within the body 1, perpendicular to the direction of airflow. The water curtain 2 is installed within the installation frame 9. A pusher 91, which is a cylinder, is provided inside the body 1. The piston rod of the cylinder is connected to the installation frame 9, meaning the output end of the pusher 91 is connected to the installation frame 9 to drive the installation frame 9 to move up and down. A pressing part 92 is provided at the bottom of the installation frame 9, positioned horizontally. The filter screen 3 passes below the pressing part 92 and is connected to the winding assembly 7. The pressing part 92 is located above the cleaning frame 6.

[0056] When cleaning the filter screen 3 is required, the pusher 91 moves the mounting frame 9 downwards. The mounting frame 9 then presses the filter screen 3 downwards via the pressing part 92, causing the filter screen 3 to abut against the upper end of the cleaning frame 6. This downward pressing of the filter screen 3 prevents it from being continuously submerged in water due to water accumulation in the water tank 4. Furthermore, the pressing part 92 can be made of flexible rubber to prevent damage to the filter screen 3 due to excessive force. The flexible material of the pressing part 92 also allows the filter screen 3 to simultaneously abut against the upper ends of multiple scrapers 62, improving the cleaning effect.

[0057] In addition, the water curtain 2 moves up and down through the mounting frame 9. During the process, the mounting frame 9 supports the water curtain 2, reducing the deformation of the water curtain 2, ensuring its contact area with the flowing air, and ensuring the cooling effect on the flowing air.

[0058] Reference Figure 7 , Figure 8 Multiple openings 93 are provided on the side of the mounting frame 9. The openings 93 are set through the mounting frame 9 from left to right and are evenly distributed on the mounting frame 9, so that the flowing air can come into even contact with the water film formed on the water curtain 2 through the openings 93, thereby improving the cooling effect.

[0059] In other embodiments, the opening 93 can be divided into opening 93-1 and opening 93-2, both of which are evenly distributed on the mounting frame 9, but staggered. This allows the flowing air to enter the mounting frame 9 through opening 93-1 and come into contact with the water curtain 2, then change its path and exit through opening 93-2. This increases the airflow path within the mounting frame 9, thereby increasing the contact time between the air and the water curtain 2 at the same airflow velocity, and improving the cooling effect on the flowing gas.

[0060] Reference Figure 7 , Figure 8A water outlet 94 is provided at the bottom of the mounting frame 9, extending along the length of the scraper 62 and communicating with the interior of the mounting frame 9. The water curtain 2 is located above the water outlet 94, and an inlet pipe 21 is provided above the water curtain 2, communicating with the interior of the water curtain 2. The inlet pipe 21 is connected to the outlet pipe 14 via a circulation pipe, enabling water recycling. Water passes through the water curtain 2 and is discharged through the water outlet 94. When cleaning the filter screen 3, this process washes the filter screen 3, flushing out impurities from the filter holes and improving the cleaning effect.

[0061] Reference Figure 1 A fan 15 is installed inside the body 1, and the fan 15 is located on one side of the water curtain 2. A channel for airflow is provided inside the body 1, and the fan 15 is installed in the channel. The fan 15 drives the airflow to move within the channel.

[0062] The implementation principle of this invention is as follows:

[0063] During normal operation, the control panel 51 abuts against the inner wall of the slide 411, and the middle part 42 and the connecting part 41 are separated. At this time, the drain pipe 13 is closed and the water outlet pipe 14 is opened to allow water to flow into the water curtain 2. Then, the water flows out through the bottom of the water curtain 2 into the middle part 42 and finally flows out through the water outlet pipe 14.

[0064] When it is necessary to clean the filter screen 3, close the water outlet pipe 14 to fill the water tank 4 with water until the water level is above the scraper 62. Then, push the pusher 91 to move the mounting frame 9 downward. The mounting frame 9, through the pressing part 92, causes the filter screen 3 below the pressing part 92 to abut against the top of the scraper 62. At this time, both the scraper 62 and the filter screen 3 below the pressing part 92 are immersed in water.

[0065] Subsequently, the winding assembly 7 drives the filter screen 3 below the pressing part 92 to move to the left. When the filter screen 3 moves past the scraper 62, the scraper 62 removes the impurities on the filter screen 3. At the same time, the filter screen 3 is cleaned by the water in the water tank 4.

[0066] Then, the winding assembly 7 moves the filter screen 3 to the right. The filter screen 3 moves the scraper 62 and the mounting bracket 61 to the right, and simultaneously moves the push rod 8 to the right. The push rod 8 then engages with the stop rod 81. When the scraper 62 moves above the connecting part 41, the push rod 8, through the stop rod 81, moves the control plate 51 into the slide groove 411. At this point, the middle part 42 connects with the connecting part 41, opening the drain pipe 13. Impurities and water containing impurities in the water tank 4 are discharged through the drain pipe 13. Simultaneously, the water curtain 2 continues to flow, and water is discharged from the bottom of the water curtain 2 to rinse the filter screen 3. Through this cleaning process, the filter screen 3 can be cleaned without disassembly, reducing the frequency of filter screen 3 replacement. Furthermore, the scraper 62 can be used to clean the filter screen 3 with water, improving the cleaning effect.

[0067] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A portable air conditioning unit, comprising a water curtain and a filter screen disposed within the unit body, characterized in that, The machine body is equipped with a water tank, control components, cleaning frame, and winding components. The water tank is located below the water curtain, and a drain pipe connected to the water tank is provided on the side of the machine body. The control components are located in the water tank to control the closing of the drain pipe. The cleaning frame is slidably assembled in the water tank, and the top of the cleaning frame abuts against the side of the filter screen. The winding components are connected to the end of the filter screen to drive the filter screen to move left and right above the cleaning frame. Initially, the drain pipe is closed, and the cleaning frame and the part of the filter screen that mates with the cleaning frame are immersed in water; When the filter moves to the left, the cleaning frame works with the water in the tank to clean the filter; when it moves to the right, the filter moves the cleaning frame to the right in conjunction with the control components to open the drain pipe, so that the impurities and water in the tank can be discharged through the drain pipe. The water tank includes a connecting part, a middle part, and a placement part. The connecting part is located below the middle part, and the placement part is located to the left of the middle part. The drain pipe is connected to the connecting part. The body is equipped with a water outlet pipe that is connected to the middle part. The water flowing out from below the water curtain is discharged through the middle part and the water outlet pipe. When cleaning the filter screen, the water outlet pipe is closed to increase the water storage in the water tank, so that the cleaning frame is located below the water level. The control components are located between the middle part and the connecting part. A sliding groove is provided on the side wall of the water tank. The control component includes a control plate and a spring. The control plate is slidably mounted in the sliding groove. The spring is set in the sliding groove and connected to the control plate. The spring drives the control plate to slide between the middle part and the connecting part. When the control plate is completely slid between the middle part and the connecting part, the drain pipe is in the closed state. The cleaning frame slides left and right within the placement section and the middle section. A push rod is provided on the cleaning frame, and a stop rod is provided on the side of the control plate away from the spring. The push rod and the stop rod are set in the same horizontal direction. When the cleaning frame moves to the right, the push rod and the stop rod work together to move the control plate to open the drain pipe.

2. The portable air conditioning unit according to claim 1, characterized in that, The cleaning frame includes multiple scrapers arranged horizontally, with the height of the scrapers gradually increasing in the direction away from the control components.

3. The portable air conditioning unit according to claim 1, characterized in that, Two sets of winding components are provided at intervals at the upper and lower ends of the water curtain, with the winding components located on one side of the water curtain. The two ends of the filter screen are respectively connected to the winding components after passing around the upper and lower ends of the water curtain.

4. The portable air conditioning unit according to claim 3, characterized in that, The machine body is equipped with an installation frame that slides up and down. The water curtain is installed in the installation frame. The machine body is equipped with a pusher. The output end of the pusher is connected to the installation frame to drive the installation frame to move up and down. The bottom of the installation frame is equipped with a pressing part. The pressing part is set in the horizontal direction. When the installation frame moves down, it presses the filter screen through the pressing part so that it abuts against the cleaning frame, and at the same time, it drives the filter screen to be immersed in water.

5. The portable air conditioning unit according to claim 2, characterized in that, The cleaning frame also includes a mounting bracket, on which scrapers and push rods are mounted. A through groove is formed between two adjacent scrapers to allow impurities to pass through. When the scraper is in the placement section, the bottom of the scraper slides against the bottom wall of the placement section.

6. The portable air conditioning unit according to claim 4, characterized in that, The mounting frame has multiple openings on its side, which run through the frame and are evenly distributed. The flowing air comes into contact with the water curtain through these openings.

7. The portable air conditioning unit according to claim 4, characterized in that, The bottom of the mounting frame has a water outlet that is connected to the inside of the mounting frame. The water curtain is located above the water outlet, and the water inside the water curtain flows out through the bottom of the water curtain and the water outlet.

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