Evaporative cooling air conditioner
By employing a multi-condenser series structure and a water curtain cooling system in evaporative air conditioning, the problem of low condenser efficiency is solved, achieving efficient cooling and low energy consumption in evaporative air conditioning.
Patent Information
- Application Number
- CN202520811304.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-27
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2035-04-27
AI Technical Summary
The condenser efficiency of existing evaporative air conditioners is low, resulting in poor cooling effect, poor refrigeration performance and high energy consumption.
The system employs a series structure of a first condenser, a second condenser, and a third condenser, combined with a water curtain and a water pump system to achieve multiple cooling of the refrigerant. Automatic water replenishment and drainage are achieved through a float inlet valve and a drain pump, and heating wires are used to prevent freezing.
It improves the cooling efficiency of the refrigerant, enhances the cooling effect of the indoor unit, and reduces the energy consumption of evaporative air conditioners.
Smart Images
Figure CN223965493U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air conditioner technology, and more specifically, to an evaporative cooling air conditioner. Background Technology
[0002] Evaporative air conditioners are a type of air conditioner that uses water evaporation to absorb heat and cool, and they have the advantage of low energy consumption. Currently, evaporative air conditioners on the market include an outdoor unit and an indoor unit. The outdoor unit is equipped with a condenser. When the indoor unit is in cooling mode, the condenser in the outdoor unit is used to cool the refrigerant. However, in the existing structure of evaporative air conditioners, the outdoor unit is only equipped with a single condenser, which results in low refrigerant cooling efficiency and poor cooling effect. Consequently, the indoor unit has poor cooling effect, and the evaporative air conditioner has high energy consumption. Summary of the Invention
[0003] The technical problem to be solved by this utility model is to provide an evaporative air conditioner that, with the combined action of a first condenser, a second condenser and a third condenser, can improve the cooling efficiency and cooling effect of the refrigerant, thereby improving the cooling effect of the indoor unit and reducing the energy consumption of the evaporative air conditioner.
[0004] This utility model provides an evaporative air conditioner, including an outdoor unit and an indoor unit. The outdoor unit includes an outdoor unit casing and a fan assembly, with the fan assembly fixed inside the outdoor unit casing. The outdoor unit also includes a water tank and a water inlet pan. The water tank is fixed to the inner bottom of the outdoor unit casing, and the water inlet pan is fixed to the inner top of the outdoor unit casing. A water pump is fixed inside the water tank, and the outlet of the water pump is connected to the inlet of the water inlet pan via a water pipe. A water curtain is vertically fixed to the inner side of the left and / or right sides of the outdoor unit casing, with the upper end of the water curtain extending below the water inlet pan and the lower end extending above the water tank. Several water outlets are provided at the bottom of the water pan located above each water curtain; the outdoor unit also includes a first condenser, a second condenser and a third condenser; the first condenser and the second condenser are respectively located at the bottom of the water pan and the water tank, and the third condenser is fixed inside the outdoor unit casing located behind the fan assembly. The third condenser, the first condenser and the second condenser are connected in series to form the condenser assembly of the outdoor unit; a first air inlet is provided on the rear side of the outdoor unit casing and on the side wall of the outdoor unit casing located on the side where the water curtain is located, and a first air outlet is provided on the front side of the outdoor unit casing.
[0005] This invention, through the arrangement of a first condenser, a second condenser, and a third condenser, improves the cooling efficiency and effect of the refrigerant when the indoor unit is in cooling mode. This enhances the cooling effect of the indoor unit and reduces the energy consumption of the evaporative air conditioner.
[0006] In one possible implementation, a baffle is provided on the inner bottom of the upper water tray, with a water storage cavity formed on the inner side of the baffle. A first condenser is located at the inner bottom of the water storage cavity, and a water distribution cavity is formed on the outer side of the baffle. Several overflow troughs are provided at intervals along the extension direction of the baffle at the upper end. A water inlet connector is provided at the bottom of the water storage cavity, forming the water inlet end of the upper water tray and connecting to the water outlet end of the water pump. Several water outlet holes corresponding to each water curtain are located at the bottom of the water distribution cavity. With this structure, the water pump can draw water from the water tank. Cooling water is fed into the water storage chamber through the inlet connector. When the water level in the storage chamber rises to the bottom of the overflow tank, the cooling water overflows into the water distribution chamber. The cooling water entering the water distribution chamber flows evenly to the upper end of the corresponding water curtain through several outlet holes located above each water curtain. Then, the cooling water flows from top to bottom along the water curtain and cools it. The cooled water can then flow back into the water tank. As the water pump continuously pumps the cooling water to the upper water plate, the cooling water can continuously and evenly cool the water curtain.
[0007] In one possible implementation, a support plate is fixed in the outdoor unit casing above the water tank. The upper end of the support plate has a cavity, and the lower end of the water curtain is inserted into the cavity. Several drainage holes are provided at the bottom of the cavity. By setting up the support plate and inserting the lower end of the water curtain into the cavity on the support plate, reliable support and limiting of the water curtain can be achieved. Furthermore, since several drainage holes are provided at the bottom of the cavity, the cooling water flowing down from the water curtain can be collected in the cavity and flow back to the water tank through the drainage holes. Under the action of the cavity, the cavity can collect the cooling water from the water curtain and prevent the cooling water from overflowing along the upper surface of the support plate to the outside of the support plate, thereby avoiding water leakage.
[0008] In one possible implementation, a float inlet valve is fixed on the side wall of the water tank, and the inlet end of the float inlet valve is connected to the inlet pipe. By setting the float inlet valve, when the cooling water level in the water tank drops to the lower limit position, the float inlet valve can be opened, and at this time the inlet pipe can automatically replenish water to the water tank to achieve the purpose of automatic water replenishment of the water tank.
[0009] In one possible implementation, a first drain pump is fixed to the bottom of the water tank, and the outlet of the first drain pump is connected to a first drain pipe. With the first drain pump, when the indoor unit is operating in heating mode, the first drain pump is in standby mode. Condensate is generated on the condenser in the outdoor unit, and the condensate drips into the water tank and is collected. When the condensate level in the water tank rises to a certain height, the first drain pump can start to extract the condensate from the water tank. Furthermore, when the indoor unit is operating in heating mode, the solenoid valve on the inlet pipe connected to the float inlet valve can automatically close under the control of the controller to prevent the float inlet valve from continuously supplying water to the water tank. Additionally, the first drain pump is a float-type drain pump. When the condensate in the water tank rises to a certain height and triggers the float of the float-type drain pump, the first drain pump can automatically open and discharge the condensate. When the condensate level in the water tank drops to a certain height, the first drain pump can automatically close.
[0010] In one possible implementation, an electric heating wire is also fixed to the bottom of the water tank; when the evaporative air conditioner is used in a cold region, and when the evaporative air conditioner is working in defrosting mode, the electric heating wire can automatically heat the water tank to prevent the water generated by defrosting on the first condenser from freezing into ice in the water tank, so that the defrosting water in the water tank can be smoothly discharged through the first drain pump.
[0011] In one possible implementation, the indoor unit includes an indoor unit casing, an evaporator, and a fan; a second air inlet is provided on the rear side of the indoor unit casing, and a second air outlet is provided on the front side of the indoor unit casing. A nozzle is fixed at the second air outlet. The evaporator and the fan are fixed from back to front on the inner side of the indoor unit casing located between the second air inlet and the second air outlet; a filter is fixed at the second air inlet; through the filter, the filter can block dust in the air of the external environment from entering the interior of the indoor unit casing through the second air inlet, thereby effectively preventing dust accumulation on the evaporator and ensuring the heat exchange efficiency of the evaporator.
[0012] In one possible implementation, a cleaning component is connected to the rear side of the indoor unit casing. The cleaning component is used to clean the filter screen. By setting up the cleaning component, the cleaning component can clean the dust adsorbed on the filter screen, which has the advantage of convenient filter screen cleaning.
[0013] In one possible implementation, the cleaning assembly includes a support frame, a movable frame, and a cylinder. The support frame is fixed to the rear side of the indoor unit housing and corresponds to the second air inlet. The movable frame is movably connected to the rear side of the support frame via two vertically symmetrical guide rail assemblies. Several sets of brush bristles spaced from left to right are fixed to the front side of the movable frame, with the front ends of the brush bristles abutting against the filter screen. The cylinder is horizontally fixed to the rear side of the indoor unit housing, and the movable frame is fixed to the piston rod of the cylinder. The cylinder is used to drive the movable frame to move left and right so that the brush bristles clean the filter screen. By using this cleaning assembly, when the piston rod of the cylinder extends and retracts to drive the movable frame to move back and forth relative to the support frame, the several sets of brush bristles can clean the dust adsorbed on the filter screen, thus providing the advantage of convenient filter screen cleaning.
[0014] In one possible implementation, a drip tray is fixed to the bottom of the indoor unit casing, the evaporator is located above the drip tray, and a second drain pump is fixed to the bottom of the drip tray. The outlet of the second drain pump is connected to a second drain pipe. The drip tray collects condensate dripping from the evaporator, and the condensate is smoothly discharged outside the indoor unit casing by the second drain pump. The second drain pump is a float-type drain pump. When the condensate in the drip tray accumulates to a certain height and triggers the float of the drain pump, the second drain pump automatically starts and discharges the condensate. When the condensate in the drip tray drops to a certain height, the second drain pump automatically shuts off. Attached Figure Description
[0015] Figure 1 A three-dimensional structural diagram of an outdoor unit with a water curtain installed on only one side;
[0016] Figure 2 for Figure 1 A partially disassembled three-dimensional structure diagram;
[0017] Figure 3 A three-dimensional structural diagram of an outdoor unit with water curtains installed inside both the left and right sides;
[0018] Figure 4 for Figure 3 A partially disassembled three-dimensional structure diagram;
[0019] Figure 5 This is the first three-dimensional structural diagram of the indoor unit;
[0020] Figure 6 This is a second 3D structural diagram of the indoor unit;
[0021] Figure 7 This is a partial exploded 3D structural diagram of the indoor unit. Detailed Implementation
[0022] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.
[0023] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.
[0024] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0025] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0026] See Figure 1-7As shown in the embodiment of this application, an evaporative air conditioner is disclosed, including an outdoor unit and an indoor unit. The outdoor unit includes an outdoor unit casing 1 and a fan assembly 2, with the fan assembly 2 fixed inside the outdoor unit casing 1. The outdoor unit also includes a water tank 3 and a water inlet pan 4. The water tank 3 is fixed to the inner bottom of the outdoor unit casing 1, and the water inlet pan 4 is fixed to the inner top of the outdoor unit casing 1. A water pump 31 is fixed inside the water tank 3, and the outlet of the water pump 31 is connected to the inlet of the water inlet pan 4 via a water pipe. A water curtain 5 is vertically fixed to the inner side of the left and / or right sides of the outdoor unit casing 1. The upper end of the water curtain 5 extends below the water tray 4, and the lower end of the water curtain 5 extends above the water tank 3. Several water outlet holes 40 are provided at the bottom of the water tray 4 located above each water curtain 5. The outdoor unit also includes a first condenser 6, a second condenser 7, and a third condenser 8. The first condenser 6 and the second condenser 7 are respectively located at the inner bottom of the water tray 4 and the water tank 3. The third condenser 8 is fixed inside the outdoor unit casing 1 located behind the fan assembly 2. The third condenser 8, the first condenser 6, and the second condenser 7 are connected in series to form the condenser of the outdoor unit. The components include: a first air inlet 11 on the rear side of the outdoor unit housing 1 and on the side wall of the outdoor unit housing 1 where the water curtain 5 is located; and a first air outlet 12 on the front side of the outdoor unit housing 1. In this embodiment, the water curtain can be installed inside one side of the outdoor unit housing, for example, on the inner side of the left or right part of the outdoor unit housing, or simultaneously on both the inner side of the left and right parts of the outdoor unit housing. When water curtains are installed on both the inner side of the left and right parts of the outdoor unit housing, the cooling efficiency of the cooling water can be improved. To improve the energy efficiency of evaporative air conditioning; in addition, in this embodiment, the inlet end of the third condenser is connected to the outlet end of the compressor assembly, the inlet end of the second condenser is connected to the outlet end of the third condenser, the inlet end of the first condenser is connected to the outlet end of the second condenser, the outlet end of the first condenser is connected to the inlet end of the evaporator in the indoor unit through the expansion valve assembly, and the outlet end of the evaporator is connected to the inlet end of the compressor assembly; furthermore, in the above embodiment, the compressor assembly and the expansion valve assembly can be installed in the outdoor unit or in the indoor unit.
[0027] A baffle 41 is provided on the inner bottom of the upper water tray 4, and a water storage cavity 42 is formed on the inner side of the baffle 41. The first condenser 6 is located at the inner bottom of the water storage cavity 42. A water distribution cavity 43 is formed on the outer side of the baffle 41. Several overflow troughs 44 are provided at intervals along the extension direction of the baffle 41 at the upper end of the baffle 41. A water inlet connector 45 is provided at the bottom of the water storage cavity 42, forming the water inlet end of the upper water tray 4. The water inlet connector 45 is connected to the water outlet end of the water pump 31. Several water outlet holes 40 corresponding to each water curtain 5 are provided at the bottom of the water distribution cavity 43. By adopting this structure, the pump... The water pump can draw cooling water from the water tank and send it into the water storage chamber through the inlet connector. When the water level in the water storage chamber rises to the bottom of the overflow tank, the cooling water can overflow into the water distribution chamber. The cooling water entering the water distribution chamber can flow evenly to the upper end of the corresponding water curtain through several water outlets located above each water curtain. Then, the cooling water can flow from top to bottom along the water curtain and cool the water curtain. The cooled water can then flow back into the water tank. As the water pump continuously pumps cooling water to the upper water plate, the cooling water can continuously and evenly cool the water curtain.
[0028] A support plate 9 is fixed in the outdoor unit casing 1 above the water tank 3. A cavity 91 is provided at the upper end of the support plate 9, and the lower end of the water curtain 5 is inserted into the cavity 91. Several drain holes 92 are provided at the bottom of the cavity 91. By setting the support plate and inserting the lower end of the water curtain into the cavity on the support plate, reliable support and limiting of the water curtain can be achieved. Since several drain holes are provided at the bottom of the cavity, the cooling water flowing down from the water curtain can be collected in the cavity and flow back to the water tank through the drain holes. Under the action of the cavity, the cavity can collect the cooling water from the water curtain and prevent the cooling water from overflowing from the upper end of the support plate to the outside of the support plate, so as to avoid water leakage.
[0029] A float inlet valve 32 is fixed on the side wall of the water tank 3. The inlet end of the float inlet valve 32 is connected to the inlet pipe. With the float inlet valve, when the cooling water level in the water tank drops to the lower limit position, the float inlet valve can be opened. At this time, the inlet pipe can automatically replenish water to the water tank to achieve the purpose of automatic water replenishment of the water tank.
[0030] A first drain pump 33 is fixed to the bottom of the water tank 3, and the outlet of the first drain pump 33 is connected to a first drain pipe. With the first drain pump, when the indoor unit is in heating mode, the first drain pump is in standby mode. Condensate is generated on the condenser in the outdoor unit and drips into the water tank, where it is collected. When the condensate level in the water tank rises to a certain height, the first drain pump can start to extract the condensate from the water tank. Furthermore, when the indoor unit is in heating mode, the solenoid valve on the inlet pipe connected to the float inlet valve can automatically close under the control of the controller to prevent the float inlet valve from continuously supplying water to the water tank. Additionally, the first drain pump is a float-type drain pump. When the condensate level in the water tank rises to a certain height and triggers the float of the float-type drain pump, the first drain pump can automatically open and discharge the condensate. When the condensate level in the water tank drops to a certain height, the first drain pump can automatically close.
[0031] A heating wire is also fixed on the bottom of the water tank 3. When the evaporative air conditioner is used in a cold region and when the evaporative air conditioner is working in defrosting mode, the heating wire can automatically heat the water tank to prevent the water generated by defrosting on the first condenser from freezing into ice in the water tank, so that the defrosting water in the water tank can be smoothly discharged through the first drain pump.
[0032] The indoor unit includes an indoor unit casing 20, an evaporator 30, and a fan 80. A second air inlet 201 is provided on the rear side of the indoor unit casing 20, and a second air outlet 202 is provided on the front side of the indoor unit casing 20. A nozzle 203 is fixed at the second air outlet 202. The evaporator 30 and the fan 80 are fixed from back to front on the inner side of the indoor unit casing 20, located between the second air inlet 201 and the second air outlet 202. A filter 50 is fixed at the second air inlet 201. Through the setting of the filter, the filter can block dust in the air of the external environment from entering the interior of the indoor unit casing through the second air inlet, thereby effectively preventing dust from accumulating on the evaporator and ensuring the heat exchange efficiency of the evaporator.
[0033] A cleaning component is connected to the rear side of the indoor unit housing 20. The cleaning component is used to clean the filter screen 50. With the setting of the cleaning component, the cleaning component can clean the dust adsorbed on the filter screen, which has the advantage of convenient filter screen cleaning.
[0034] The cleaning assembly includes a support frame 601, a movable frame 602, and a cylinder 603. The support frame 601 is fixed to the rear side of the indoor unit housing 20 and corresponds to the second air inlet 201. The movable frame 602 is movably connected to the rear side of the support frame 601 via two vertically symmetrical guide rail assemblies. Several sets of bristle groups 604, spaced from left to right, are fixed to the front side of the movable frame 602. The front ends of the bristle groups 604 abut against the filter screen 50. The cylinder 603 is horizontally fixed to the rear side of the indoor unit housing 20. The movable frame 602 is fixed to the piston rod of the cylinder 603. The cylinder 603 is used to drive the movable frame 602 to move left and right so that the bristle groups 604 clean the filter screen 50. By using this cleaning assembly, when the piston rod of the cylinder moves back and forth to drive the movable frame to move back and forth relative to the support frame, the several sets of bristle groups can clean the dust adsorbed on the filter screen, thus providing the advantage of convenient filter screen cleaning.
[0035] A water collection tray 70 is fixed on the bottom of the indoor unit casing 20. The evaporator 30 is located above the water collection tray 70. A second drain pump 701 is fixed on the bottom of the water collection tray 70, and the outlet of the second drain pump 701 is connected to a second drain pipe. The water collection tray can collect the condensate falling from the evaporator to achieve the collection of condensate. Under the action of the second drain pump, the condensate accumulated in the water collection tray can be smoothly discharged to the outside of the indoor unit casing. The second drain pump is a float-type drain pump. When the condensate in the water collection tray accumulates to a certain height and triggers the float of the float-type drain pump, the second drain pump can automatically turn on and discharge the condensate. When the condensate in the water collection tray drops to a certain height, the second drain pump can automatically turn off.
[0036] In use, the first condenser is cooled by cooling water in the upper water pan, the second condenser is cooled by cooling water in the water tank, and the third condenser is cooled by air entering from the rear of the outdoor unit casing (when the fan assembly is working, air from the external environment enters the outdoor unit casing through the first air inlet located at the rear of the outdoor unit casing, thereby achieving air cooling of the third condenser). Specifically, the refrigerant from the compressor first enters the third condenser for initial cooling, then enters the first condenser for secondary cooling, and finally enters the second condenser for tertiary cooling. Through the synergistic effect of the first, second, and third condensers, when the indoor unit is in cooling mode, the condenser assembly formed by the series connection of the first, second, and third condensers improves the cooling efficiency and effect of the refrigerant, thereby enhancing the cooling effect of the indoor unit and reducing the energy consumption of the evaporative air conditioner.
[0037] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. An evaporative cooling air conditioner comprising an outdoor unit and an indoor unit; the outdoor unit comprising an outdoor unit casing (1) and a fan assembly (2), the fan assembly (2) being fixed inside the outdoor unit casing (1); characterized in that: The outdoor unit further comprises a water tank (3) and an upper water tray (4); the water tank (3) is fixed on the inner bottom of the outdoor unit shell (1), the upper water tray (4) is fixed on the inner top of the outdoor unit shell (1), the inside of the water tank (3) is fixed with a water pump (31), the water outlet end of the water pump (31) is connected with the water inlet end of the upper water tray (4) through a water pipe; the inner side of the left part and / or the inner side of the right part of the outdoor unit shell (1) is vertically fixed with a water curtain (5), the upper end of the water curtain (5) extends below the upper water tray (4), the lower end of the water curtain (5) extends above the water tank (3), the bottom of the upper water tray (4) above each water curtain (5) is provided with a plurality of water outlet holes (40); the outdoor unit further comprises a first condenser (6), a second condenser (7) and a third condenser (8); the first condenser (6) and the second condenser (7) are respectively arranged at the inner bottom of the upper water tray (4) and the water tank (3), the third condenser (8) is fixed inside the outdoor unit shell (1) at the rear side of the fan assembly (2), the third condenser (8), the first condenser (6) and the second condenser (7) are sequentially connected in series to form a condenser assembly of the outdoor unit; the rear side of the outdoor unit shell (1) and the side wall of the outdoor unit shell (1) on the side where the water curtain (5) is located are both provided with a first air inlet (11), and the front side of the outdoor unit shell (1) is provided with a first air outlet (12).
2. The evaporative cool air conditioner of claim 1, wherein: The inner bottom of the upper water tray (4) is provided with a baffle (41), the inner side of the baffle (41) forms a water storage cavity (42), the first condenser (6) is arranged at the inner bottom of the water storage cavity (42), the outer side of the baffle (41) forms a water distribution cavity (43), the upper end of the baffle (41) is provided with a plurality of overflow grooves (44) which are distributed at intervals along the extension direction of the baffle (41), the bottom of the water storage cavity (42) is provided with a water inlet connector (45), the water inlet connector (45) forms the water inlet end of the upper water tray (4), and the water inlet connector (45) is connected with the water outlet end of the water pump (31), and a plurality of water outlet holes (40) corresponding to each water curtain (5) are arranged on the bottom of the water distribution cavity (43).
3. The evaporative cool air conditioner of claim 1, wherein: The outdoor unit shell (1) above the water tank (3) is fixed with a support plate (9), the upper end of the support plate (9) is provided with a recess (91), the lower end of the water curtain (5) is inserted into the recess (91), and the bottom of the recess (91) is provided with a plurality of water falling holes (92).
4. The evaporative cool air conditioner of claim 1, wherein: The side wall of the water tank (3) is fixed with a floating ball water inlet valve (32), and the water inlet end of the floating ball water inlet valve (32) is connected with a water inlet pipe.
5. The evaporative cool air conditioner of claim 1, wherein: The inner bottom of the water tank (3) is fixed with a first drainage pump (33), and the water outlet of the first drainage pump (33) is connected with a first drainage pipe.
6. The evaporative cool air conditioner of claim 5, wherein: The outer bottom of the water tank (3) is further fixed with an electric heating wire.
7. The evaporative cool air conditioner according to any one of claims 1 to 6, wherein: The indoor unit comprises an indoor unit shell (20), an evaporator (30) and a fan (80); the rear side of the indoor unit shell (20) is provided with a second air inlet (201), the front side of the indoor unit shell (20) is provided with a second air outlet (202), the second air outlet (202) is fixed with a nozzle (203), the evaporator (30) and the fan (80) are fixed in sequence from back to front on the inner side of the indoor unit shell (20) between the second air inlet (201) and the second air outlet (202); the second air inlet (201) is fixed with a filter screen (50).
8. The evaporative cool air conditioner of claim 7, wherein: The rear side of the indoor unit shell (20) is connected with a cleaning assembly, and the cleaning assembly is used for cleaning the filter screen (50).
9. The evaporative cool air conditioner of claim 8, wherein: The cleaning assembly comprises a support frame (601), a moving frame (602) and a gas cylinder (603); the support frame (601) is fixed on the rear side of the indoor unit shell (20) and corresponds to the second air inlet (201), the moving frame (602) is movably connected to the rear side of the support frame (601) through two up-and-down symmetrically arranged guide rail assemblies, the front side of the moving frame (602) is fixed with a plurality of groups of bristle groups (604) which are distributed from left to right, the front end of the bristle group (604) abuts against the filter screen (50), the gas cylinder (603) is fixed horizontally on the rear side of the indoor unit shell (20), the moving frame (602) is fixed with the piston rod of the gas cylinder (603), and the gas cylinder (603) is used for driving the moving frame (602) to move left and right so that the bristle group (604) cleans the filter screen (50).
10. The evaporative cool air conditioner of claim 7, wherein: The inner bottom of the indoor unit shell (20) is fixed with a water collecting tray (70), the evaporator (30) is located above the water collecting tray (70), the bottom of the water collecting tray (70) is fixed with a second drain pump (701), and the water outlet of the second drain pump (701) is connected with a second drain pipe.