Evaporative cooling fan with water purification function
By incorporating a partition and ultraviolet lamp inside the water storage tank of the evaporative air cooler, the problem of water tank contamination is solved, the lifespan of the wet curtain is extended, water resource utilization efficiency is improved, and the health of the output air is ensured.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUNAN XILIN TECHNOLOGY CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-06-12
AI Technical Summary
The water in the storage tank of existing evaporative air coolers is contaminated, resulting in unhealthy air output, shortened lifespan of the evaporative cooling pads, and low water resource utilization efficiency.
A partition is installed inside the water storage tank to divide it into a water storage tank and a wastewater tank. The wastewater tank is located below the wet curtain. The water in the wet water tank is sterilized by ultraviolet lamps. The purified water in the wastewater tank overflows into the water storage tank for use.
It achieves water purification in the water storage tank, extends the service life of the wet curtain, improves the efficiency of water resource utilization, and ensures the health of the air output.
Smart Images

Figure CN224353150U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of evaporative air cooler technology, and in particular to an evaporative air cooler with water purification function. Background Technology
[0002] Current evaporative air coolers mainly consist of a water tank, an air box, a water pump, and a control circuit. The air box is mounted on the water tank and includes a casing and a fan. The fan is housed inside the casing. The front of the casing has an air outlet, while the sides and back have air inlets. A wet curtain is installed inside the air inlets. A water spray trough is located on the top of the casing, and the bottom of the trough has water spray holes corresponding to the wet curtain. The water spray trough is connected to the water tank via the water pump. The water pump and the fan are electrically connected to the control circuit. Its working principle is as follows: the water pump draws water into the water spray trough, and the water in the trough flows to the water spray holes, thus wetting the wet curtain below. When the air from the air inlet passes through the wet curtain, the relatively warm air exchanges heat with the wet curtain, and then the air is blown out from the air outlet by the fan, achieving the purpose of cooling. However, due to the presence of dust in the air, some of the dust adheres to the wet curtain, while the rest flows down with the water flow and is collected in the water tank, causing the water in the tank to be quickly contaminated. The contaminated water in the tank is then reused on the wet curtain, which easily pollutes the air passing through the wet curtain and is detrimental to the health of the person experiencing the airflow.
[0003] In addition, the wet curtains absorb dust or other pollutants from the air and also absorb pollutants from the secondary polluted water, which shortens the lifespan of the wet curtains. Utility Model Content
[0004] The purpose of this invention is to provide an evaporative air cooler with a reasonable structure and water purification function.
[0005] The purpose of this utility model is achieved as follows:
[0006] An evaporative air cooler with water purification function includes a water storage tank, a blower box, a water pump, and a control circuit. The blower box is supported on the water storage tank and includes a housing and a fan. The fan is installed inside the housing. The front of the housing has an air outlet, and the sides and back of the housing have air inlets. A wet curtain is installed inside the air inlets. A water spray trough is installed on the top of the housing, and the bottom of the water spray trough has water spray holes corresponding to the wet curtain. The water spray trough is connected to the water storage tank through the water pump. The water pump and the fan are electrically connected to the control circuit. The water storage tank has a partition that separates the water storage tank into a water storage tank and a wastewater tank. The wastewater tank is directly below the wet curtain, and the height of the partition is lower than the height of the side wall of the water storage tank.
[0007] The objective of this utility model can also be achieved by the following technical measures:
[0008] As a more specific embodiment, the partition is U-shaped when viewed from above, and together with the left, right and rear side walls of the water storage tank, it forms a U-shaped wastewater tank.
[0009] As a further embodiment, the sidewalls of the partition and the water storage tank are respectively provided with an inner drain outlet and an outer drain outlet on the same axis. The inner drain outlet connects the water storage tank and the wastewater tank, and the outer drain outlet leads to the outside. The diameter of the inner drain outlet is smaller than the diameter of the outer drain outlet. It also includes a sealing assembly, which includes a plug for sealing the inner drain outlet, a cover for sealing the outer drain outlet, and a connecting rod, with the connecting rod connecting between the plug and the cover.
[0010] As a further embodiment, the housing is composed of a front panel, a rear panel, a top cover, and two side panels. The water spray trough is installed on the top cover, and the top of the water spray trough is also provided with an outer cover. The rear panel and the two side panels are provided with wet curtains on their inner sides. The air outlet is installed on the front panel. The rear panel and the side panels are provided with rear air inlets and side air inlets corresponding to their respective wet curtains. The rear panel and the two side panels are also provided with water collection boxes at the lower end of the wet curtains. The bottom of the water collection boxes is provided with a drain outlet, which is connected to the wastewater trough.
[0011] As a further embodiment, the top edge of the partition is provided with an overflow notch.
[0012] As a further embodiment, the top cover is also equipped with an ultraviolet lamp that irradiates ultraviolet light into the water tank, and the ultraviolet lamp is electrically connected to the control circuit.
[0013] As a further embodiment, the front panel is provided with a guide vane on the air outlet, and a control panel and a water inlet are respectively provided above and below the air outlet on the front panel. The control panel is electrically connected to the control circuit, and a cover plate is flipped onto the water inlet.
[0014] As a further solution, a water gauge is provided on the front side wall of the water storage tank.
[0015] As a further solution, a low-level water collection tank is provided at the bottom of the water storage tank near the inner drain outlet and at the bottom of the wastewater tank near the outer drain outlet.
[0016] As a further embodiment, the water spray tank has interconnected diversion channels on its rear and left and right sides. The water spray holes are located at the bottom of the diversion channels. The water spray tank and the diversion channels are separated by a boss. The top of the boss is provided with an overflow channel, which connects the upper parts of the water spray tank and the diversion channels. The water pump is a submersible pump, which is installed in the water storage tank. The water spray tank is equipped with a nozzle, which is connected to the submersible pump through a water pipe.
[0017] The beneficial effects of this utility model are as follows:
[0018] (1) The wastewater tank of this utility model can collect the water that has been sprayed on the wet curtain first. After the wastewater is purified by sedimentation, the relatively clean water will overflow from the top of the wastewater tank into the water storage tank after the tank is full. This makes the water used to spray on the wet curtain relatively clean. At the same time, since the water purified by sedimentation in the wastewater tank can be reused, the capacity of the water storage tank is not greatly reduced after the wastewater tank occupies the space of the water storage tank, ensuring that the water storage tank can be used for a long time after it is full of water.
[0019] (2) The ultraviolet lamp of this utility model irradiates the water in the water tank. Since the water tank has a small space and a small amount of water, it has a better sterilization effect after being irradiated by the ultraviolet lamp, which reduces the growth of bacteria in the water and on the wet curtain and reduces the chance of the wet curtain becoming moldy. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the main structure of an embodiment of the present invention.
[0021] Figure 2 for Figure 1 A schematic diagram of the AA cross-sectional structure.
[0022] Figure 3 for Figure 2 Enlarged structural diagram at point B.
[0023] Figure 4 This is a top view of the structure of this utility model.
[0024] Figure 5 for Figure 4 A schematic diagram of the CC cross-section structure.
[0025] Figure 6 This is a three-dimensional structural diagram of the present invention from one angle.
[0026] Figure 7 This is a three-dimensional structural diagram of the present invention from another angle.
[0027] Figure 8 This is a three-dimensional structural diagram of the outer cover and water inlet cover of this utility model in the open state. Detailed Implementation
[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0029] See Figures 1-8As shown, an evaporative air cooler with water purification function includes a water storage tank 1, a fan box 10, a water pump 9, and a control circuit (not shown in the figure). The fan box 10 is supported on the water storage tank 1 and includes a box body and a fan 7. The fan 7 is installed inside the box body. The front of the box body has an air outlet 21, and the sides and back of the box body have air inlets. The inner side of the air inlet has a wet curtain 8. The top of the box body has a water spray trough 32, and the bottom of the water spray trough 32 has water spray holes 351 corresponding to the wet curtain 8. The water spray trough 32 is connected to the water storage tank through the water pump 9. The water pump 9 and the fan 7 are electrically connected to the control circuit. The water storage tank 1 has a partition 15, which divides the water storage tank 1 into a water storage tank 13 and a wastewater tank 14. The wastewater tank 14 is directly below the wet curtain 8, and the height of the partition 15 is lower than the height of the side wall of the water storage tank 1.
[0030] The partition 15 is U-shaped when viewed from above, and together with the left, right and rear side walls of the water storage tank 1, it forms a U-shaped wastewater trough 14.
[0031] The partition 15 and the side wall of the water storage tank 1 are respectively provided with an inner drain outlet 152 and an outer drain outlet 12 on the same axis. The inner drain outlet 152 connects the water storage tank 13 and the wastewater tank 14, and the outer drain outlet 12 leads to the outside. The diameter of the inner drain outlet 152 is smaller than the diameter of the outer drain outlet 12.
[0032] It also includes a cap assembly, which includes a plug 18 for sealing the inner drain outlet 152, a cover 17 for sealing the outer drain outlet 12, and a connecting rod 19 connected between the plug 18 and the cover 17.
[0033] The enclosure is formed by a front panel 2, a rear panel 5, a top cover 3, and two side panels 4. The water spray trough 32 is installed on the top cover 3, and the top of the water spray trough 32 is also provided with an outer cover 31. The inner sides of the rear panel 5 and the two side panels 4 are provided with wet curtains 8. The air outlet 21 is installed on the front panel 2. The rear panel 5 and the side panels 4 are respectively provided with a rear air inlet 51 and a side air inlet 41 corresponding to their respective wet curtains 8. The rear panel 5 and the two side panels 4 are also provided with a water collection box 20 corresponding to the lower end of the wet curtains 8. The bottom of the water collection box 20 is provided with a drain outlet 201, which is connected to the wastewater tank 14.
[0034] An overflow notch 151 is provided on the top edge of the partition 15.
[0035] The top cover 3 is also equipped with an ultraviolet lamp 6 that irradiates ultraviolet light into the water tank 32, and the ultraviolet lamp 6 is electrically connected to the control circuit.
[0036] The bottom of the water tank 32 is provided with a transparent cover 33, and the ultraviolet lamp 6 is installed inside the transparent cover 33.
[0037] The bottom of the top cover 3 has an opening corresponding to the bottom of the water spray tank 32. A transparent cover 33 is installed on the opening 39 and is sealed to fit the opening. The top cover 3 has a light shield 61 corresponding to the opening. The light shield 61 is used to prevent the light from the ultraviolet lamp 6 from shining into the box and then passing through the air outlet.
[0038] One edge of the outer cover 31 is hinged to the top cover 3. A magnetic switch 25 is provided on the line that connects the ultraviolet lamp 6 to the control circuit. The magnetic switch 25 is located on the side opposite to the hinge of the top cover 3 and the outer cover 31 and on the outside of the water spray tank 32. A magnetic block 37 is provided on the other edge opposite to the hinge of the outer cover 31. When the outer cover 31 is opened, the magnetic block 37 moves away from the magnetic switch 25, and the magnetic switch 25 disconnects the circuit of the ultraviolet lamp 6.
[0039] The edge of the light-shielding plate 61 is provided with an elastic buckle, and the inner wall of the opening is provided with a buckle position corresponding to the elastic buckle. The elastic buckle and the buckle position are fastened and fixed.
[0040] The front panel 2 has an air outlet 21 with a guide vane. The front panel 2 has a control panel 22 and a water inlet 24 above and below the air outlet 21, respectively. The control panel 22 is electrically connected to the control circuit, and the water inlet 24 is flipped and connected to a cover plate 23.
[0041] The front side wall of the water storage tank 1 is provided with a water gauge 11. The height of the partition 15 is higher than the highest position defined by the water gauge 11.
[0042] The bottom of the water storage tank 1 is provided with a low-level water collection tank 16 near the inner drain outlet 152 and the bottom of the wastewater tank 14 is provided with a low-level water collection tank 16 near the outer drain outlet 12.
[0043] The water spray tank 32 has interconnected diversion channels 35 on its rear side and left and right sides. The water spray holes 351 are located at the bottom of the diversion channels 35. The water spray tank 32 and the diversion channels 35 are separated by a boss. The top of the boss is provided with an overflow channel 34, which connects the upper part of the water spray tank 32 and the diversion channels 35. The water pump 9 is a submersible pump, which is installed in the water storage tank 1. The water spray tank 32 is provided with a nozzle 38, which is connected to the submersible pump 9 through a water pipe 91.
[0044] Its working principle is as follows: After opening the cover 23, the user can insert the water supply pipe into the water inlet 24 to supply water to the water storage tank 13. Water supply stops when the water level reaches the high position indicated by the water level gauge 11. The fan is then started, and the airflow passes through the wet curtain and enters the housing, then is blown out through the air outlet 21. The water pump 9 is then started, pumping water from the water storage tank 13 to the water spray tank 32. The water spray tank 32 sprays water onto the wet curtain 8 at the air inlet through the water spray holes 351, allowing the air passing through the wet curtain 8 to exchange heat with the water and cool down. Simultaneously, the ultraviolet lamp 6 can be turned on to irradiate the water in the water spray tank 32, reducing the chance of bacterial growth in the water. The water that has passed through the wet curtain 8 falls into the water collection box 20 and is then introduced into the wastewater tank 14 through the drain port 201 at the bottom of the water collection box 20.
[0045] After the water passing through the wet curtain 8 settles in the wastewater tank 14, the particulate matter in the water is located at the bottom layer, and the purified water after the particulate matter has settled is located at the top layer. When the wastewater tank 14 is full, the purified water overflows into the storage tank 13 and is reused.
[0046] When draining water, unscrew the cover 17 of the outer drain outlet 12. The cover 17 drives the plug 18 away from the inner drain outlet 152 via the connecting rod 19. Therefore, the water in the water storage tank 13 and the water in the wastewater tank 14 can be drained together.
[0047] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.
Claims
1. An evaporative air cooler with water purification function, comprising a water storage tank (1), a fan box (10), a water pump (9), and a control circuit, wherein the fan box (10) is supported on the water storage tank (1), the fan box (10) comprises a box body and a fan (7), the fan (7) is disposed in the box body, the front of the box body is provided with an air outlet (21), the side and back of the box body are provided with air inlets, the inner side of the air inlets is provided with a wet curtain (8), the top of the box body is provided with a water spray trough (32), the bottom of the water spray trough (32) is provided with water spray holes (351) corresponding to the wet curtain (8), the water spray trough (32) is connected to the water storage tank through the water pump (9), and the water pump (9) and the fan (7) are electrically connected to the control circuit respectively; characterized in that: The water storage tank (1) is provided with a partition (15), which divides the water storage tank (1) into a water storage tank (13) and a wastewater tank (14). The wastewater tank (14) is directly below the wet curtain (8), and the height of the partition (15) is lower than the height of the side wall of the water storage tank (1).
2. The evaporative air cooler with water purification function according to claim 1, characterized in that: The partition (15) is U-shaped when viewed from above, and together with the left, right and rear side walls of the water storage tank (1), it forms a U-shaped wastewater trough (14).
3. The evaporative air cooler with water purification function according to claim 1, characterized in that: The partition (15) and the side wall of the water storage tank (1) are respectively provided with an inner drain (152) and an outer drain (12) on the same axis. The inner drain (152) connects the water storage tank (13) and the wastewater tank (14), and the outer drain (12) leads to the outside. The diameter of the inner drain (152) is smaller than the diameter of the outer drain (12). It also includes a cap assembly, which includes a plug (18) for sealing the inner drain (152), a cover (17) for sealing the outer drain (12), and a connecting rod (19) connected between the plug (18) and the cover (17).
4. The evaporative air cooler with water purification function according to claim 1, characterized in that: The box is formed by a front panel (2), a rear panel (5), a top cover (3) and two side panels (4). The water spraying tank (32) is set on the top cover (3), and the top of the water spraying tank (32) is also provided with an outer cover (31). The rear panel (5) and the two side panels (4) are provided with wet curtains (8) on their inner sides. The air outlet (21) is set on the front panel (2). The rear panel (5) and the side panels (4) are respectively provided with a rear air inlet (51) and a side air inlet (41) corresponding to their respective wet curtains (8). The rear panel (5) and the two side panels (4) are also provided with a water collection box (20) at the lower end of the wet curtain (8). The bottom of the water collection box (20) is provided with a drain outlet (201), which is connected to the wastewater tank (14).
5. The evaporative air cooler with water purification function according to claim 1, characterized in that: The top edge of the partition (15) is provided with an overflow notch (151).
6. The evaporative air cooler with water purification function according to claim 4, characterized in that: The top cover (3) is also provided with an ultraviolet lamp (6) that irradiates ultraviolet light into the water tank (32), and the ultraviolet lamp (6) is electrically connected to the control circuit.
7. The evaporative air cooler with water purification function according to claim 4, characterized in that: The front panel (2) has a guide vane on the air outlet (21). The front panel (2) has a control panel (22) and a water inlet (24) above and below the air outlet (21), respectively. The control panel (22) is electrically connected to the control circuit, and the water inlet (24) is flipped and connected to a cover plate (23).
8. The evaporative air cooler with water purification function according to claim 3, characterized in that: The front side wall of the water storage tank (1) is provided with a water gauge (11).
9. The evaporative air cooler with water purification function according to claim 3, characterized in that: The water storage tank (1) is provided with a water collection trough at the bottom near the inner drain outlet (152) and the wastewater tank (14) is provided with a water collection trough at the bottom near the outer drain outlet (12).
10. The evaporative air cooler with water purification function according to claim 2, characterized in that: The water spraying tank (32) has interconnected diversion channels (35) on its rear side and left and right sides. The water spraying hole (351) is located at the bottom of the diversion channel (35). The water spraying tank (32) and the diversion channel (35) are separated by a boss. The top of the boss is provided with an overflow channel (34). The overflow channel (34) connects the upper part of the water spraying tank (32) and the diversion channel (35). The water pump (9) is a submersible pump, which is installed in the water storage tank (1). The water spraying tank (32) is provided with a nozzle (38). The nozzle (38) is connected to the submersible pump through a water pipe (91).