Evaporative air conditioner

Abstract

The utility model discloses an evaporative air conditioner, which relates to the technical field of air conditioners and comprises a casing, and an air inlet through hole I is formed in the middle of the side wall I of the casing; a first positioning plate is arranged below an inner hole opening, corresponding to the first air inlet through hole, in the machine shell, the first positioning plate is horizontally arranged, the length direction of the first positioning plate is perpendicular to the air inlet direction of the first air inlet through hole, and a first positioning inserting groove is formed in the upper plate face of the first positioning plate in the length direction of the first positioning plate. A first strip-shaped baffle is arranged on the upper portion in the machine shell in parallel and corresponds to the upper portion of the first positioning plate. The first strip-shaped baffle and the first side wall are horizontally arranged at intervals. An air outlet is formed in the machine shell; the upper end of the water curtain is detachably inserted into the first water curtain inserting opening, the lower end of the water curtain is detachably inserted into the first positioning inserting groove, and an inner side hole opening of the first air inlet through hole is sealed and covered. The water distribution mechanism is arranged on the machine shell; the fan is installed in the inner cavity of the machine shell, and an air outlet of the fan is communicated with the air outlet. The mounting structure of the water curtain is optimized, so that the water curtain can be conveniently disassembled, assembled and replaced, and the water curtain structure has the characteristics of simple structure and good sealing performance.

Description

Technical Field

[0001] This utility model relates to the field of air conditioner technology, and in particular to evaporative air conditioners. Background Technology

[0002] Evaporative air conditioners offer cooling, ventilation, dust control, and odor removal functions, and are commonly used for ventilation and cooling in public places such as factories, workshops, and supermarkets. A typical evaporative air conditioner includes a casing, evaporative cooling pads, a fan, a water circulation system, and electrical components. Its cooling principle is as follows: when the fan runs, a negative pressure is created inside the casing, causing outside air to flow through the porous, moistened surface of the evaporative cooling pads into the inner cavity. The evaporation of water on the pads absorbs heat, forcing the air passing through the pads to cool. Evaporative air conditioners utilize the principle of evaporative cooling, providing both cooling and humidification functions. However, with prolonged use, the honeycomb-shaped evaporative cooling pads can become clogged with scale and dust, reducing efficiency and requiring regular maintenance or replacement.

[0003] Chinese patent (CN 107327992 B, 2023.07.18) discloses a window-type evaporative air cooler, in which the wet curtain is installed inside the inner shell, and the outer cover covers the inner shell and water tank from top to bottom. It is very inconvenient to disassemble and assemble, and the maintenance cost is high.

[0004] Therefore, how to provide an evaporative air cooler that can optimize the installation structure of the water curtain so that the water curtain can be easily disassembled and replaced, and has the characteristics of simple structure and good sealing performance is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the present invention proposes an evaporative air conditioner, which aims to solve the technical problem of inconvenient replacement of the wet curtain in the above-mentioned traditional evaporative air conditioner.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This utility model provides an evaporative air cooler, including:

[0008] The housing has an air inlet hole in the middle of one side wall; a positioning plate is provided below the inner opening of the air inlet hole inside the housing, the positioning plate is horizontally arranged and its length direction is perpendicular to the air inlet direction of the air inlet hole, and a positioning slot is provided on the upper surface of the positioning plate along its length direction; a strip baffle is provided parallel to the upper part of the housing and above the positioning plate, the strip baffle is horizontally spaced from the side wall and the two define a water curtain outlet; and an air outlet is provided on the housing.

[0009] The water curtain has its upper end detachably inserted into the water curtain inlet 1 and its lower end detachably inserted into the positioning slot 1, and covers the inner opening of the air inlet hole 1.

[0010] A water distribution mechanism is provided on the housing to supply water to the water curtain;

[0011] A fan is installed in the inner cavity of the housing, and its exhaust port is connected to the air outlet.

[0012] When the evaporative air cooler of this utility model needs to replace the water curtain, the old water curtain is lifted upward to dislodge it from the positioning slot 1, then the lower end of the water curtain is moved out of the air inlet hole 1, and then the water curtain is moved downward to dislodge its upper end from the water curtain insertion port 1, and then the water curtain is taken out from the air inlet hole 1. The process of replacing the new water curtain is the reverse: first, the upper end of the water curtain is passed through the air inlet hole 1 and inserted upward into the water curtain insertion port 1, then the lower end of the water curtain is passed through the air inlet hole 1, and then the lower end of the water curtain is inserted downward into the positioning slot 1. The lower end of the water curtain in the installed state is supported by the positioning plate 1 and limited by the positioning slot 1. The upper part of the water curtain is tightly fitted to the inner side of the side wall 1 by the strip baffle 1, so as to achieve a tight seal between the water curtain and the inner opening of the air inlet hole 1. The water distribution mechanism supplies water to the evaporative cooling pad to wet it. The evaporative cooling pad acts as a barrier between the air inlet and the inner cavity of the casing, serving multiple functions including air filtration, cooling, and humidification. The fan exhausts air from the inner cavity of the casing through the outlet, creating negative pressure within the casing. This atmospheric pressure difference allows outside air to continuously enter the casing through the evaporative cooling pad. This invention optimizes the installation structure of the evaporative cooling pad, enabling convenient disassembly and replacement, and offers advantages such as simple structure, ease of operation, and excellent sealing performance.

[0013] As a further improvement to the above technical solution, the water distribution mechanism includes a water pump, a water distribution pipe, and an inlet valve;

[0014] A water collection trough is provided at the bottom of the inner cavity of the housing corresponding to the lower end of the water curtain; a water inlet is provided on the side wall of the water collection trough, and the water inlet valve is installed at the water inlet; a water distribution pipe is arranged above the water curtain; the water distribution pipe is provided with water distribution holes for spraying water onto the top of the water curtain to wet the water curtain; the water inlet of the water pump is connected to the water collection trough through a pipe, and the water outlet of the water pump is connected to the water distribution pipe through a pipe.

[0015] The beneficial effects of the above technical solution are as follows: the function of the inlet valve is to control the opening and closing of the inlet, thereby controlling the amount of water added to the water collection tank by the external water supply pipeline; the water pump is used to transport the water in the water collection tank to the water distribution pipe, and the water in the water distribution pipe can be transported to the top of the water curtain through the water distribution hole. Under the action of gravity and surface tension, the water gradually wets the entire water curtain. The excess water at the bottom of the water curtain returns to the water collection tank, realizing water circulation supply to keep the water curtain moist.

[0016] As a further improvement to the above technical solution, the water distribution pipe extends horizontally along the length of the top surface of the water curtain, and the water distribution pipe is provided with a plurality of water distribution holes spaced apart along the length of the outer peripheral wall of the top surface of the water curtain.

[0017] The beneficial effects of the above technical solution are: the multiple water distribution holes spaced along the length of the water distribution pipe can better and more evenly wet the water curtain, the water distribution structure is simple, and the water distribution speed and water distribution volume can be adjusted by controlling the water supply pressure of the water pump.

[0018] As a further improvement to the above technical solution, an air intake filter assembly is also included, which includes a ventilation cover and a filter screen; the ventilation cover is adapted to be embedded in an outer opening of the air intake hole, and air intake holes are arranged on the surface of the ventilation cover; the filter screen is located between the ventilation cover and the water curtain and is installed on the ventilation cover.

[0019] The beneficial effects of the above technical solution are as follows: the ventilation cover with air inlet holes acts as a primary filter, effectively intercepting large particles in the air and purifying the air, while also protecting the downstream filtration structure; the filter screen set between the ventilation cover and the water curtain acts as a medium filter, effectively intercepting small and medium diameter particles in the air; the water curtain further plays a role in dust removal, cooling, and humidification; thus achieving three-stage air filtration and purification.

[0020] As a further improvement to the above technical solution, the housing and the side wall 2 adjacent to the side wall 1 are each provided with an air inlet hole 2 in the middle. The housing is provided with a positioning plate 2 below the inner opening of the air inlet hole 2. The positioning plate 2 is horizontally arranged and its length direction is perpendicular to the air inlet direction of the air inlet hole 2. The upper surface of the positioning plate 2 is provided with a positioning slot 2 along its length direction. The upper part of the housing is provided with a strip baffle 2 parallel to and above the positioning plate 2. The strip baffle 2 is arranged horizontally at intervals from the side wall 2, and the two define a water curtain outlet 2 between them.

[0021] The positioning slot 2 and the water curtain inlet 2 are detachably fitted with a water curtain for sealing the air inlet hole 2; the water curtain inserted in the positioning slot 2 is connected to the adjacent side end of the water curtain inserted in the positioning slot 1.

[0022] The beneficial effects of the above technical solution are as follows: Air inlet vents are provided on both adjacent side walls of the casing and covered by water curtains, increasing the effective area of ​​the water curtains and thus increasing the heat exchange area between air and water. This also reduces the impact of the airflow on the water curtains, ensuring the stability of the water curtains during air conditioner operation. The water curtains in positioning slot two and positioning slot one can be seamlessly connected at their adjacent ends to ensure no air leakage, improving the air conditioner's cooling performance. Providing air inlet vents on both adjacent side walls of the casing allows for placement of the air conditioner close to the corner of a workshop or factory, improving space utilization.

[0023] As a further improvement to the above technical solution, the housing and the side wall three opposite to the side wall two are provided with air inlet holes three in the middle. The housing is provided with a positioning plate three below the inner opening of the air inlet hole three. The positioning plate three is horizontally arranged and its length direction is perpendicular to the air inlet direction of the air inlet hole three. The upper surface of the positioning plate three is provided with a positioning slot three along its length direction. The upper part of the housing is parallel to and above the positioning plate three. The strip baffle three is arranged horizontally and spaced apart from the side wall three, and the two define the water curtain outlet three between them.

[0024] The positioning slot three and the water curtain inlet three are detachably fitted with a water curtain for sealing the air inlet three; the water curtain inserted in the positioning slot three is connected to the adjacent side end of the water curtain inserted in the positioning slot one.

[0025] The beneficial effects of the above technical solution are as follows: By setting air inlets in the middle of the three side walls and sealing them with water curtains, the effective area of ​​the water curtains and the heat exchange area between air and water are further increased, thus improving the cooling efficiency of the air conditioner. The presence of air inlets on all three side walls of the casing facilitates the placement of the air conditioner close to a wall in a workshop or factory, improving its applicability.

[0026] As a further improvement to the above technical solution, the housing and the side wall four opposite to the side wall one are provided with air inlet holes four in the middle. The housing is provided with a positioning plate four below the inner opening of the air inlet hole four. The positioning plate four is horizontally arranged and its length direction is perpendicular to the air inlet direction of the air inlet hole four. The upper surface of the positioning plate four is provided with a positioning slot four along its length direction. The upper part of the housing is parallel to and above the positioning plate four. The strip baffle four is arranged horizontally and spaced apart from the side wall four, and the two define the water curtain outlet four between them.

[0027] The positioning slot four and the water curtain inlet four are detachably fitted with water curtains for sealing the air inlet hole four; the two sides of the water curtain inserted in the positioning slot four are connected one-to-one with the side ends of the water curtain inserted in the positioning slot two and the side ends of the water curtain inserted in the positioning slot three to form a cylindrical water curtain structure.

[0028] The water distribution mechanism has a ring-shaped water distribution pipe that is coaxially arranged above the top surface of the cylindrical water curtain structure for water distribution.

[0029] The beneficial effects of the above technical solution are as follows: By seamlessly connecting multiple water curtains to the corresponding inner wall surfaces within the casing, a cylindrical water curtain structure is constructed. This cylindrical water curtain structure has a larger heat exchange area, significantly improving the cooling efficiency of the air conditioner. Furthermore, the cylindrical water curtain structure evenly disperses the impact of the incoming airflow, resulting in a more stable structure. Water is distributed by coaxially arranging annular water distribution pipes above the top surface of the cylindrical water curtain structure, simplifying the structure. Air inlet holes are provided on all four side walls of the casing, allowing the air conditioner to be placed in the center of a workshop or factory, ensuring unobstructed airflow from all four sides and improving its applicability.

[0030] As a further improvement to the above technical solution, water-permeable holes are provided on the bottom surface of the positioning slot one, the positioning slot two, the positioning slot three and the positioning slot four.

[0031] The beneficial effects of the above technical solution are: the function of the water permeable holes is to allow the water collected at the bottom of the water curtain in the positioning slot 1, positioning slot 2, positioning slot 3 and positioning slot 4 to flow smoothly into the water collection tank below.

[0032] As a further improvement to the above technical solution, the top of the housing is open; a top cover plate is installed on the top of the housing corresponding to the open position, and the air outlet is opened on the surface of the top cover plate;

[0033] The fan is installed in the lower part of the casing, and the exhaust port of the fan is connected to the air outlet through a pipe.

[0034] The advantages of the above technical solution are: the air outlet is set at the top of the casing, which does not occupy or interfere with the installation space of the water curtain; the top opening of the casing is covered by the top cover plate, which makes it easy to open and observe the internal condition of the casing and check the aging of the water curtain.

[0035] As a further improvement to the above technical solution, the two ends of the positioning slot in the length direction extend one-to-one to the inner side surface of the casing and the adjacent side wall of the side wall; the water curtain can slide along the length direction of the positioning slot.

[0036] The beneficial effect of the above technical solution is that the water curtain can slide along the length of the positioning slot to adjust the installation position, thereby enabling the water curtain to better and completely cover the inner opening of the air inlet hole.

[0037] As can be seen from the above technical solution, compared with the prior art, the present invention discloses an evaporative air cooler, which has the following advantages and beneficial effects:

[0038] 1. This utility model optimizes the installation structure of the wet curtain, enabling convenient disassembly and replacement of the wet curtain. The overall structure is simple, easy to operate, and has good sealing performance.

[0039] 2. This utility model constructs a cylindrical water curtain structure that seals the air inlet holes by arranging air inlet holes around the shell and seamlessly connecting multiple water curtains to the corresponding inner wall surface of the shell. This not only improves the sealing performance but also greatly increases the heat exchange area of ​​the water curtain structure, thereby effectively improving the cooling efficiency of the air conditioner. The cylindrical water curtain structure plays a good role in evenly dispersing the impact of the incoming airflow, making the structure more stable and durable.

[0040] 3. The water curtains arranged on the four side walls of the shell of this utility model can be disassembled, cleaned or replaced individually, making disassembly and assembly more convenient. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0042] Figure 1 Schematic diagram of the internal structure of the evaporative air cooler of this utility model;

[0043] Figure 2 A schematic diagram showing the arrangement of the positioning plate and the strip baffle of the evaporative air cooler of this utility model.

[0044] Figure 3 A schematic diagram of the arrangement of the cylindrical water curtain structure and the rectangular baffle structure of the evaporative air cooler of this utility model.

[0045] Figure 4 A schematic diagram of the water distribution pipe structure of the evaporative air cooler of this utility model;

[0046] Figure 5 Front view of the evaporative air cooler of this utility model;

[0047] Figure 6 Rear view of the evaporative air cooler of this utility model;

[0048] Figure 7 Top view of the evaporative air cooler of this utility model;

[0049] Figure 8 Bottom view of the evaporative air cooler of this utility model;

[0050] Figure 9 Left view of the evaporative air cooler of this utility model;

[0051] Figure 10 Right view of the evaporative air cooler of this utility model;

[0052] In the diagram: 1. Housing; 11. Side wall 1; 111. Air inlet 1; 12. Positioning plate 1; 121. Positioning slot 1; 13. Strip baffle 1; 14. Water curtain inlet 1; 15. Top cover plate; 151. Air outlet; 16. Water collection trough; 161. Water inlet; 2. Water curtain; 3. Water distribution mechanism; 31. Water pump; 32. Water distribution pipe; 321. Water distribution hole; 33. Water inlet valve; 34. Water supply pipeline; 4. Fan; 5. Air inlet filter assembly; 51. Ventilation cover plate; 511. Air inlet hole; 52. Filter screen; 6. Support leg; 7. Drain pipe; 8. Cylindrical water curtain structure; 9. Rectangular baffle frame structure; Detailed Implementation

[0053] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0054] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0056] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0057] According to the embodiments of this utility model, such as Figures 1 to 10 As shown, the evaporative air cooler includes: a casing 1, a water curtain 2, a water distribution mechanism 3, and a fan 4.

[0058] An air inlet hole 111 is provided in the middle of the side wall 11 of the housing 1; a positioning plate 12 is provided below the inner opening of the air inlet hole 111 inside the housing 1. The positioning plate 12 is horizontally arranged and its length direction is perpendicular to the air inlet direction of the air inlet hole 111. A positioning slot 121 is provided on the upper surface of the positioning plate 12 along its length direction; a strip baffle 13 is provided parallel to the upper part of the housing 1 and above the positioning plate 12. The strip baffle 13 and the side wall 11 are arranged horizontally at intervals, and the two define the water curtain inlet 14; an air outlet 151 is provided on the housing 1.

[0059] The upper end of the water curtain 2 is detachably inserted into the water curtain inlet 14, and the lower end is detachably inserted into the positioning slot 121, and the inner opening of the air inlet hole 111 is sealed.

[0060] The water distribution mechanism 3 is installed on the casing 1 to supply water to the water curtain 2.

[0061] The fan 4 is installed in the inner cavity of the casing 1, and its exhaust port is connected to the air outlet 151.

[0062] When the evaporative air conditioner in this embodiment needs to replace the water curtain, the old water curtain 2 is lifted upwards to dislodge it from the positioning slot 121, then the lower end of the water curtain 2 is moved out of the air inlet hole 111, and then the water curtain 2 is moved downwards to dislodge its upper end from the water curtain inlet 14, and then the water curtain 2 is taken out from the air inlet hole 111. The process of replacing the new water curtain 2 is the opposite: first, the upper end of the water curtain 2 is passed through the air inlet hole 111 and inserted upwards into the water curtain inlet 14, then the lower end of the water curtain 2 is passed through the air inlet hole 111, and then the lower end of the water curtain 2 is inserted downwards into the positioning slot 121. The lower end of the water curtain 2 in the installed state is supported by the positioning plate 12 and limited by the positioning slot 121. The upper part of the water curtain 2 is tightly fitted to the inner side of the side wall 11 by the strip baffle 13, so as to achieve a tight seal between the water curtain 2 and the inner opening of the air inlet hole 111. The water distribution mechanism 3 supplies water to the water curtain 2 to wet it. The water curtain 2 acts as a barrier between the air inlet 111 and the inner cavity of the casing 1, serving multiple functions of filtering, cooling, and humidifying the air. The fan 4 discharges the air from the inner cavity of the casing 1 to the outside of the casing 1 through the air outlet 151, creating a negative pressure inside the casing 1. Utilizing the atmospheric pressure difference, external air can continuously enter the casing 1 through the water curtain 2. This invention optimizes the installation structure of the wet curtain, enabling convenient disassembly and replacement, and offers advantages such as simple structure, ease of operation, and good sealing performance.

[0063] Specifically, the casing 1 is a rectangular shell, manufactured using sheet metal and welding methods. Support legs 6 are fixed to its bottom near each of the four corners, with a height of 245mm. The casing 1 has a total height of 1300mm, a length of 1450mm, and a width of 1200mm. The air inlet vent 111 is rectangular, with a height of 865mm and a width of 1294mm. The water curtain 2 is made of specially treated honeycomb structure paper, which can be cut to different sizes as needed. It is water-resistant, breathable, and has good water absorption. Due to its honeycomb structure and spatial design, the heat exchange area between air and water is maximized on the water curtain paper, ensuring a maximum evaporation ratio and better dust removal and cooling effects.

[0064] In some embodiments, the water distribution mechanism 3 includes a water pump 31, a water distribution pipe 32, and an inlet valve 33;

[0065] A water collection trough 16 is provided at the bottom of the inner cavity of the housing 1, corresponding to the lower end of the water curtain 2; a water inlet 161 is provided on the side wall of the water collection trough 16, and a water inlet valve 33 is installed at the water inlet 161; a water distribution pipe 32 is arranged above the water curtain 2; a water distribution hole is provided on the water distribution pipe 32 for spraying water to the top of the water curtain 2 to wet the water curtain 2; the water inlet of the water pump 31 is connected to the water collection trough 16 through the water inlet pipe, and the water outlet of the water pump 31 is connected to the water distribution pipe 32 through the water supply pipe 34.

[0066] The function of the inlet valve 33 is to control the opening and closing of the inlet 161, thereby controlling the amount of water added to the water collection tank 16 by the external water supply pipeline; the water pump 31 is used to transport the water in the water collection tank 16 to the water distribution pipe 32. The water in the water distribution pipe 32 can be transported to the top of the water curtain 2 through the water distribution hole. Under the action of gravity and surface tension, the water gradually wets the entire water curtain 2. The excess water at the bottom of the water curtain 2 returns to the water collection tank 16, realizing water circulation supply to keep the water curtain 2 moist.

[0067] Specifically, the inlet valve 33 is a float-type inlet valve. The float of the inlet valve 33 is located in the water collection tank 16 to control the water inlet flow by controlling the water level in the water collection tank 16, so as to maintain a constant water volume in the water collection tank 16 and realize the automatic water filling function.

[0068] Specifically, a drain pipe 7 can be installed at the bottom of the water collection tank 16, and the drain pipe 7 connects to the inner cavity of the water collection tank 16; and a drain valve can be installed on the drain pipe 7 to discharge the sewage from the water collection tank 16 when cleaning is required.

[0069] In some embodiments, the water distribution pipe 32 extends horizontally along the length of the top surface of the water curtain 2, and the water distribution pipe 32 is provided with a plurality of water distribution holes spaced apart along the length of the outer peripheral wall of the top surface of the water curtain 2.

[0070] The multiple water distribution holes spaced along the length of the water distribution pipe 32 can better and more evenly wet the water curtain 2. The water distribution structure is simple, and the water distribution speed and water volume can be adjusted by controlling the water supply pressure of the water pump.

[0071] In some embodiments, the system further includes an air inlet filter assembly 5, which includes a ventilation cover 51 and a filter screen 52. The ventilation cover 51 is adapted to be embedded in the outer opening of the air inlet through hole 111, and the ventilation cover 51 has air inlet holes 511 arranged on its surface. The filter screen 52 is located between the ventilation cover 51 and the water curtain 2 and is installed on the ventilation cover 51.

[0072] The ventilation cover 51 with air inlet 511 acts as a primary filter, effectively intercepting large particles in the air and purifying the air, while also protecting the downstream filtration structure. The filter screen 52, located between the ventilation cover 51 and the water curtain 2, acts as a medium-efficiency filter, effectively intercepting small and medium diameter particles in the air. The water curtain 2 further serves to remove dust, cool, and humidify the air, thus achieving three-stage air filtration and purification.

[0073] Specifically, the ventilation cover 51 is made of stainless steel, and the air inlet 511 is manufactured by stamping on the surface of the ventilation cover 51. The filter screen 52 is made of stainless steel, and stainless steel mesh can be selected. It is moisture-resistant, has a long service life, can be washed with water, and can be reused.

[0074] In some embodiments, the housing 1 and the side wall 2 adjacent to the side wall 11 are provided with air inlet holes 2 in the middle. The housing 1 is provided with a positioning plate 2 below the inner opening of the air inlet hole 2. The positioning plate 2 is horizontally arranged and its length direction is perpendicular to the air inlet direction of the air inlet hole 2. The upper surface of the positioning plate 2 is provided with a positioning slot 2 along its length direction. The upper part of the housing 1 is parallel to and above the positioning plate 2. The strip baffle 2 is arranged horizontally and spaced apart from the side wall 2, and the two define the water curtain outlet 2 between them.

[0075] The positioning slot 2 and the water curtain inlet 2 are detachably inserted with a water curtain 2 for sealing the air inlet hole 2; the water curtain 2 inserted in the positioning slot 2 is connected to the adjacent side end of the water curtain 2 inserted in the positioning slot 121.

[0076] Air inlet vents are provided on two adjacent side walls of the casing 1 and covered by water curtains, increasing the effective area of ​​the water curtains and thus increasing the heat exchange area between the air and water. This also reduces the impact of the airflow on the water curtain 2, ensuring the stability of the water curtain 2 during the operation of the air conditioner. The water curtain 2 in positioning slot 2 and the adjacent side of the water curtain 2 in positioning slot 121 can be seamlessly connected to ensure no air leakage, improving the cooling performance of the air conditioner. The air inlet vents on two adjacent side walls of the casing 1 allow the air conditioner to be placed close to the corner of a workshop or factory, improving space utilization.

[0077] In some embodiments, the housing 1 and the side wall 3 opposite to the side wall 2 are provided with air inlet holes 3 in the middle. Inside the housing 1, a positioning plate 3 is provided below the inner opening of the air inlet hole 3. The positioning plate 3 is horizontally arranged and its length direction is perpendicular to the air inlet direction of the air inlet hole 3. The upper surface of the positioning plate 3 is provided with a positioning slot 3 along its length direction. A strip baffle 3 is provided parallel to the upper part of the housing 1 and above the positioning plate 3. The strip baffle 3 and the side wall 3 are arranged horizontally at intervals, and the two define the water curtain outlet 3 between them.

[0078] The positioning slot 3 and the water curtain socket 3 are detachably fitted with a water curtain 2 for sealing the air inlet hole 3; the water curtain 2 inserted in the positioning slot 3 is connected to the adjacent side end of the water curtain 2 inserted in the positioning slot 121.

[0079] An air inlet vent is provided in the middle of the third side wall and covered by the water curtain 2, which further increases the effective area of ​​the water curtain and the heat exchange area between the air and water, thereby further improving the cooling efficiency of the air conditioner. Air inlets are also provided on all three side walls of the casing 1, which allows the air conditioner to be placed close to a wall in a workshop or factory, improving its applicability.

[0080] In some embodiments, the housing 1 and the side wall 11 opposite each other are provided with air inlet holes 4 in the middle. Inside the housing 1, below the inner opening of the air inlet hole 4, there is a positioning plate 4. The positioning plate 4 is horizontally arranged and its length direction is perpendicular to the air inlet direction of the air inlet hole 4. The upper surface of the positioning plate 4 is provided with a positioning slot 4 along its length direction. The upper part of the housing 1 is parallel to and above the positioning plate 4. The strip baffle 4 is arranged horizontally and spaced apart from the side wall 4, and the two define the water curtain outlet 4 between them.

[0081] The positioning slot 4 and the water curtain inlet 4 are detachably fitted with a water curtain 2 for sealing the air inlet hole 4; the two sides of the water curtain 2 inserted in the positioning slot 4 correspond one-to-one with the side ends of the water curtain 2 inserted in the positioning slot 2 and the side ends of the water curtain 2 inserted in the positioning slot 3 to form a cylindrical water curtain structure 8.

[0082] The water distribution pipe 32 of the water distribution mechanism 3 is annular and coaxially arranged above the top surface of the cylindrical water curtain structure 8 for water distribution.

[0083] A cylindrical water curtain structure 8 is constructed by seamlessly connecting multiple water curtains 2 to the corresponding inner wall surfaces within the casing 1. The cylindrical water curtain structure 8 has a larger heat exchange area, significantly improving the cooling efficiency of the air conditioner. Furthermore, the cylindrical water curtain structure 8 evenly disperses the impact of the incoming airflow, resulting in a more stable structure. A ring-shaped water distribution pipe 32 is coaxially arranged above the top surface of the cylindrical water curtain structure 8 for water distribution, simplifying the structure. Air inlet holes are provided on all four side walls of the casing 1, allowing the air conditioner to be placed in the center of a workshop or factory, ensuring unobstructed airflow from all four sides and improving its applicability.

[0084] In some embodiments, the bottom surfaces of positioning slot 121, positioning slot 2, positioning slot 3 and positioning slot 4 are all provided with water-permeable holes.

[0085] The function of the water permeable holes is to allow the water collected at the bottom of the water curtain in the positioning slot 121, positioning slot 2, positioning slot 3 and positioning slot 4 to flow smoothly into the water collection tank 16 below.

[0086] Specifically, the strip baffle 13 corresponds to the upper part of the air inlet 111, so that the upper end of the water curtain 2 can be inserted into the water curtain inlet 14 (i.e., the gap between the strip baffle 13 and the side wall 11) when tilted. Strip baffles 13, 2, 4, and 3 are sequentially fixed end to end and coaxially adapted to support the rectangular baffle structure 9 on the inner wall of the cylindrical water curtain structure 8. The rectangular baffle structure 9 is fixed to the inner wall of the housing 1 by a connecting plate. Strip baffles 13, 2, 3, and 4 are all narrow steel plates, with a width of about 5cm.

[0087] In some embodiments, the top of the housing 1 is open; a top cover plate 15 is installed at the top of the housing 1 corresponding to the open position, and an air outlet 151 is opened on the surface of the top cover plate 15.

[0088] The fan 4 is installed in the lower part of the casing 1, and the exhaust port of the fan 4 is connected to the air outlet 151 through a pipe.

[0089] The air outlet 151 is located at the top of the casing 1, so as not to occupy or interfere with the water curtain installation space; the top opening of the casing 1 is covered by the top cover plate 15, which makes it easy to open and observe the internal condition of the casing 1 and check the aging of the water curtain.

[0090] Specifically, an installation frame is welded and fixed to the lower part of the casing 1 above the water collection tank 16, and the base of the fan 4 is fixedly installed on the upper end of the installation frame.

[0091] Specifically, the air outlet 151 can be customized to either top or side air outlet, providing diverse air outlet directions.

[0092] In some embodiments, the system further includes an exhaust duct connected to the upper surface of the top cover plate 15; one end of the exhaust duct is connected to and communicates with the air outlet 151, and the air outlet direction of the other end of the exhaust duct is set upward or horizontally. The air outlet direction of the air conditioner can be flexibly adjusted by adjusting the air outlet direction of the other end of the exhaust duct.

[0093] Specifically, the fan 4 includes a housing, a motor installed inside the housing, and an impeller mounted on the motor. The motor is a low-noise external rotor motor, characterized by a fixed shaft and a rotating housing. The impeller is mounted on the motor housing and is directly driven by the rotation of the motor housing. This motor can utilize a three-phase voltage regulator, a controllable vortex voltage regulator, or a frequency converter, employing stepless speed regulation to adapt to varying system loads. The impeller has a forward-curving multi-blade structure; all components are stamped from steel plates using molds, consisting of 32-76 thin-plate arc blades riveted to a wheel cover. After static and dynamic balancing, its vibration accuracy is below 5.6 mm / s, exhibiting excellent aerodynamic performance. The housing is made of high-quality cold-rolled steel or high-quality galvanized steel, mechanically interlocked into a single unit. The cold-rolled steel housing undergoes a series of chemical treatments before being electrostatically powder-coated. The coating is then solidified at high temperature, resulting in a hard, heat- and moisture-resistant surface that is not easily damaged and has a bright and attractive appearance. The casing, made of galvanized steel sheet, is riveted or welded into a volute shape. The surface is not painted, preserving the original luster and pattern of the galvanized steel. It is moisture-proof, rust-proof, aesthetically pleasing, and durable. The casing and base can be interchanged at 0°, 90°, and 180° for easy installation. The volute tongue of the casing uses a new sound-absorbing structure, providing excellent noise reduction. The built-in fan outlet can be customized for side or top airflow. A 0° angle with the base is when the outlet is close to the ground and parallel; a 90° angle is when the outlet is upward; and a 90° angle is when the outlet is above and parallel to the base.

[0094] In some embodiments, the two ends of the positioning slot 121 extend one-to-one to the inner side surfaces of the two side walls adjacent to the side wall 11 on the housing 1; the water curtain 2 can slide along the length of the positioning slot 121.

[0095] The water curtain 2 can slide along the length of the positioning slot 121 to adjust the installation position, thereby enabling the water curtain 2 to better and completely cover the inner opening of the air inlet hole 111.

[0096] Specifically, there are multiple water curtains 2. The multiple water curtains 2 can be inserted into the positioning slot 121 by splicing them sequentially along the width direction. The width of the spliced ​​body of the multiple water curtains 2 is adapted to the length of the positioning slot 121, so that the spliced ​​body of the multiple water curtains 2 can completely cover the corresponding air inlet holes 111, 2, 3 and 4.

[0097] Specifically, the first and last ends of positioning slot 121, positioning slot 2, positioning slot 4 and positioning slot 3 are connected in sequence to form a ring-shaped positioning mounting groove.

[0098] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0099] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An evaporative cooler, characterized by, It includes: The side wall (11) of the shell (1) is provided with an air inlet hole (111) in the middle; the inner side hole of the air inlet hole (111) is provided with a positioning plate (12) below; the positioning plate (12) is horizontally arranged and its length direction is perpendicular to the air inlet direction of the air inlet hole (111); the upper surface of the positioning plate (12) is provided with a positioning slot (121) along the length direction; the upper part of the shell (1) is provided with a strip-shaped baffle (13) parallel to the positioning plate (12); the strip-shaped baffle (13) is horizontally spaced apart from the side wall (11), and the water curtain slot (14) is defined between the two; the shell (1) is provided with an air outlet (151); The water curtain (2) is detachably inserted into the water curtain slot (14) at the upper end, and is detachably inserted into the positioning slot (121) at the lower end, and covers the inner side hole of the air inlet hole (111); The water distribution mechanism (3) is arranged on the shell (1) to supply water to the water curtain (2); The fan (4) is installed in the inner cavity of the shell (1), and its air outlet communicates with the air outlet (151).

2. The evaporative cooler according to claim 1, wherein The water distribution mechanism (3) includes a water pump (31), a water distribution pipe (32) and a water inlet valve (33); The inner cavity of the shell (1) is provided with a water collecting tank (16) corresponding to the lower end of the water curtain (2); the side wall of the water collecting tank (16) is provided with a water inlet (161), and the water inlet valve (33) is installed at the water inlet (161); the water distribution pipe (32) is arranged corresponding to the upper part of the water curtain (2); the water distribution pipe (32) is provided with a water distribution hole for spraying water to the top end of the water curtain (2) to wet the water curtain (2); the water inlet of the water pump (31) is connected with the water collecting tank (16) through a pipeline, and the water outlet of the water pump (31) is connected with the water distribution pipe (32) through a pipeline.

3. The evaporative cooler according to claim 2, wherein The water distribution pipe (32) is arranged horizontally along the length direction of the top surface of the water curtain (2), and a plurality of water distribution holes are arranged in the length direction of the outer peripheral wall corresponding to the top surface of the water curtain (2).

4. The evaporative cooler according to claim 3, wherein It also includes an air inlet filter assembly (5), which includes a ventilation cover plate (51) and a filter screen (52); the ventilation cover plate (51) is embedded in the outer side hole of the air inlet hole (111), and the ventilation cover plate (51) is provided with an air inlet hole (511) on the surface; the filter screen (52) is located between the ventilation cover plate (51) and the water curtain (2) and is installed on the ventilation cover plate (51).

5. The evaporative cooler according to claim 1, wherein The side wall two of the casing (1) is provided with air inlet holes two in the middle part adjacent to the side wall one (11), and the inside hole of the casing (1) corresponding to the air inlet holes two is provided with a positioning plate two below the hole, the positioning plate two is horizontally arranged and the length direction is perpendicular to the air inlet direction of the air inlet holes two, and the upper plate surface of the positioning plate two is provided with a positioning slot two along the length direction; the upper part of the casing (1) is provided with a strip-shaped baffle two in parallel and corresponding to the positioning plate two, the strip-shaped baffle two is horizontally spaced from the side wall two, and the water curtain slot two is defined between the two. The positioning slot two and the water curtain slot two are detachably inserted with a water curtain (2) for covering the air inlet holes two; the water curtain (2) inserted in the positioning slot two is adjacent to the side end of the water curtain (2) inserted in the positioning slot one (121).

6. The evaporative cooler according to claim 5, wherein The side wall three of the casing (1) is provided with air inlet holes three in the middle part opposite to the side wall two, and the inside hole of the casing (1) corresponding to the air inlet holes three is provided with a positioning plate three below the hole, the positioning plate three is horizontally arranged and the length direction is perpendicular to the air inlet direction of the air inlet holes three, and the upper plate surface of the positioning plate three is provided with a positioning slot three along the length direction; the upper part of the casing (1) is provided with a strip-shaped baffle three in parallel and corresponding to the positioning plate three, the strip-shaped baffle three is horizontally spaced from the side wall three, and the water curtain slot three is defined between the two. The positioning slot three and the water curtain slot three are detachably inserted with a water curtain (2) for covering the air inlet holes three; the water curtain (2) inserted in the positioning slot three is adjacent to the side end of the water curtain (2) inserted in the positioning slot one (121).

7. The evaporative cooler according to claim 6, wherein The side wall four of the casing (1) is provided with air inlet holes four in the middle part opposite to the side wall one (11), and the inside hole of the casing (1) corresponding to the air inlet holes four is provided with a positioning plate four below the hole, the positioning plate four is horizontally arranged and the length direction is perpendicular to the air inlet direction of the air inlet holes four, and the upper plate surface of the positioning plate four is provided with a positioning slot four along the length direction; the upper part of the casing (1) is provided with a strip-shaped baffle four in parallel and corresponding to the positioning plate four, the strip-shaped baffle four is horizontally spaced from the side wall four, and the water curtain slot four is defined between the two. The positioning slot four and the water curtain slot four are detachably inserted with a water curtain (2) for covering the air inlet holes four; the side ends of the water curtain (2) inserted in the positioning slot four are corresponding to the side ends of the water curtain (2) inserted in the positioning slot two and the positioning slot three, so as to form a cylindrical water curtain structure. The water distribution pipe (32) of the water distribution mechanism (3) is annular and coaxial corresponding to the top end surface of the cylindrical water curtain structure to distribute water.

8. The evaporative cooler according to claim 7, wherein The bottom surface of the positioning slot one (121), the positioning slot two, the positioning slot three and the positioning slot four is provided with a water permeable hole.

9. The evaporative cooler according to claim 1, wherein, The top end of the casing (1) is open; the top cover plate (15) is installed on the top end of the casing (1) corresponding to the opening, and the air outlet (151) is formed on the plate surface of the top cover plate (15). The fan (4) is installed in the lower part of the casing (1), and the air outlet of the fan (4) is connected to the air outlet (151) through a pipeline.

10. The evaporative cooler of claim 1, wherein: The two ends of the positioning slot (121) in the length direction correspondingly extend to the inner side surfaces of the two side walls adjacent to the side wall (11) on the casing (1); and the water curtain (2) can slide along the length direction of the positioning slot (121).

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