An outdoor guardhouse for sunshade and cooling

By combining cooling evaporation columns and small fans, and utilizing capillary cotton ropes for passive water replenishment and evaporation core cooling, the problems of insignificant cooling effect and high energy consumption in guard booths have been solved, achieving a stable and low-cost cooling effect that meets the needs of outdoor duty.

CN224943514UActive Publication Date: 2026-11-06CHONGQING KELAIYA TECH CO LTD
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Patent Information

Application Number
CN202522593596.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-12-05
Publication Date
2026-11-06
Estimated Expiration
2035-12-05

AI Technical Summary

Technical Problem

Existing cooling solutions for guard posts suffer from problems such as insignificant cooling effect, high energy consumption, large space occupation, and high maintenance costs, which especially affect the health and work efficiency of on-duty personnel in high-temperature environments.

Method used

The system employs a cooling evaporation column, which uses capillary cotton ropes for passive water replenishment and evaporation core cooling. Combined with a small fan to create negative pressure airflow, it achieves passive cooling with a temperature reduction of 5-10℃. The cooling is then directed to the monitored area by the fan, reducing energy consumption and humidity increase.

Benefits of technology

It achieves stable cooling of 5-10℃ in high-temperature environments, reduces energy consumption, ensures dry clothing for on-duty personnel and equipment safety, reduces maintenance costs, and adapts to the needs of different on-duty locations.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model provides an outdoor sunshade and cooling guardhouse, including a water-storage base. A cooling evaporation column and a secondary support column are fixedly installed between the water-storage base and the sunshade roof. Universal wheels are fixedly installed at the four corners of the water-storage base. The water inlet on the top of the water-storage base is sealed with a plug. A water-storage chamber is provided inside the water-storage base. The sunshade roof has an interconnected connecting channel and a discharge chamber. A fan is fixedly installed in the discharge chamber, and a discharge mesh is installed below the discharge chamber; the two are interconnected. This utility model uses a thin cotton rope as the evaporation core for passive water replenishment. Air is filtered and cooled through the evaporation channel. The fan provides directional airflow without moisture issues. It has low energy consumption, is compatible with solar energy, has an integrated structure that saves space, is easy to inspect and maintain, and provides efficient and stable cooling.
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Description

Technical Field

[0001] This utility model belongs to the technical field of guard booths, and in particular relates to an outdoor guard booth for sunshade and cooling. Background Technology

[0002] Guard booths, as core facilities for outdoor security and duty, are widely used in scenarios such as residential community entrances and exits, industrial park access control, scenic spot ticket gates, and traffic control points. Their core function is to provide guards with basic operating space that provides shelter from wind, rain, and sun, ensuring their normal work in harsh outdoor environments. With frequent high temperatures in summer (extreme outdoor temperatures in some areas can reach 35-40℃), the temperature inside guard booths can easily rise sharply due to direct sunlight and poor air circulation, even exceeding 45℃. This can lead to heatstroke and decreased physical strength among guards, seriously affecting their work efficiency and health. Therefore, efficient and stable cooling functions have become a key requirement for outdoor guard booths.

[0003] Currently, cooling solutions for guard booths on the market mainly fall into three categories, but all of them have obvious drawbacks:

[0004] Simple fan cooling solution: This solution uses ordinary axial fans installed inside the pavilion to achieve air convection. This solution only exchanges hot air inside the pavilion with outside air and cannot lower the temperature of the air itself. In high outdoor temperatures, the air blown out is still hot, resulting in a weak cooling effect. Furthermore, the operation of the fan can easily bring in outside dust, leading to a deterioration of the environment inside the pavilion.

[0005] Water mist spraying cooling solution: This solution involves installing spray nozzles around or on top of the booth to atomize water and spray it into the air, using the evaporation of water to absorb heat and achieve cooling. However, this solution significantly increases the humidity around the booth. In windless weather, the water mist can easily adhere to the clothing of staff and the surface of equipment, causing damp clothing and malfunctions of electronic devices. Furthermore, the water mist system relies on a high-pressure water pump, resulting in high energy consumption and clogging issues (especially when the water quality is poor).

[0006] Air conditioning cooling solution: A small air conditioner outdoor unit and indoor unit are installed inside the guard booth, and cooling is achieved through compressor cooling. Although this solution can achieve a stable cooling effect, it has two major limitations: First, the air conditioning system (including outdoor unit, indoor unit, and ductwork) occupies a large space, while outdoor guard booths are generally small (standard size 1.2m×1.5m×2.2m), which will significantly reduce the operating space for guards after installation; second, the air conditioning consumes a lot of electricity (average daily consumption of 8-12 kWh), and outdoor scenarios often rely on batteries or temporary power supply, which puts a lot of pressure on energy supply, and the outdoor unit is prone to failure under high temperature and sun exposure, resulting in high maintenance costs.

[0007] Therefore, it is essential to invent an outdoor guard post for sunshade and cooling. Utility Model Content

[0008] To address the aforementioned technical problems, this utility model provides an outdoor sunshade and cooling guardhouse, comprising a water-storing base, a sunshade roof, a cooling evaporation column, a secondary support column, casters, a water inlet, a plug, a water storage chamber, a connecting channel, a discharge chamber, a fan, and a discharge mesh. The cooling evaporation column and the secondary support column are fixedly installed between the water-storing base and the sunshade roof. The casters are fixedly installed at the four corners below the water-storing base. The water inlet above the water-storing base is sealed by the plug. A water storage chamber is provided inside the water-storing base. A connecting channel and a discharge chamber are provided inside the sunshade roof. The fan is fixedly installed in the discharge chamber, and the discharge mesh is installed below the discharge chamber, with the two interconnected.

[0009] Preferably, the cooling evaporation column includes a support channel column, a limiting plate, an evaporation core, a capillary cotton rope, and an evaporation channel. The upper and lower ends of the support channel column are respectively provided with flanges, which are fixedly connected to the water storage base and the sunshade top cover with bolts. The interior of the support channel column is connected to the water storage chamber and the connecting channel. An evaporation core is provided between the two limiting plates fixedly installed inside the support channel column. The capillary cotton rope is provided at the center of the evaporation core. Several evaporation channels are opened through the evaporation core itself.

[0010] Preferably, the evaporation core is a cylindrical structure made of composite sponge. The evaporation core is located at the lower end of the support channel column and close to the water storage base. A counterweight ball is provided at the lower end of the capillary cotton rope at the center of the evaporation core. The lower end of the capillary cotton rope extends into the water storage cavity of the water storage base and is immersed in the liquid in the water storage cavity.

[0011] Preferably, the evaporation core has a plurality of evaporation channels arranged in a circular array vertically through it. The cross-section of the evaporation channel is a polygonal channel. The limiting plates at the upper and lower positions of the evaporation core are provided with through holes that match and correspond to the evaporation channels and the capillary cotton rope.

[0012] Preferably, a maintenance cover is bolted to the support channel column on one side of the evaporator core, providing a replacement and maintenance port for the evaporator core. An air inlet cover is bolted to the support channel column on the lower side of the evaporator core, providing an inlet for outside air. A recess matching the locking protrusion is provided on one side of the evaporator core, and the locking protrusion is integrally set on the inner wall of the support channel column and located between the upper and lower limiting discs.

[0013] Preferably, a removable filter screen is installed on the air inlet cover by bolts, allowing outside air to enter the support channel column through the air inlet cover, flow through the evaporation channel of the evaporation core into the connecting channel of the sunshade top cover, then remain in the exhaust chamber and be discharged through the exhaust mesh.

[0014] Preferably, the fan inside the discharge chamber creates a negative pressure zone for outside air to enter, the discharge mesh is installed below the sunshade top cover and above the water storage base; the water inlet of the water storage base is connected to the water storage chamber.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] This invention utilizes the combination of an evaporation core within a cooling evaporation column and capillary cotton ropes to achieve passive water replenishment (without a water pump), keeping the evaporation core continuously moist. Outside air, filtered through the air inlet cover, flows through the evaporation channel of the evaporation core. As the air evaporates, it absorbs heat, directly lowering the air temperature by 5-10°C (up to 12°C in dry environments). The cooled air is then directed to the duty area by a fan, resulting in no spraying or water accumulation throughout the process. The humidity inside and around the booth only increases by 3-5%, effectively avoiding the dampness problems caused by water mist solutions and ensuring the dryness of personnel's clothing and the safety of equipment.

[0017] Furthermore, the core water replenishment process of this utility model relies on the passive permeation of capillary cotton ropes, requiring no additional power. It only requires a small fan (power ≤30W) to create negative pressure to guide airflow, resulting in a daily power consumption far lower than that of an air conditioning solution (8-12 kWh). Even if it relies on outdoor batteries or solar power (which can be paired with a small solar panel), it can achieve stable operation throughout the day, significantly reducing energy supply pressure and meeting the requirements of green energy conservation.

[0018] This utility model integrates the cooling evaporation column and the auxiliary support column into the pavilion's support structure, eliminating the need for additional space inside the pavilion (the evaporation core is built into the support channel column), ensuring ample operating space for on-duty personnel. Simultaneously, an inspection cover is installed on the support channel column, allowing for quick disassembly and replacement of the evaporation core. The removable filter on the air inlet cover also facilitates regular cleaning (preventing dust from clogging the evaporation channel), significantly reducing subsequent maintenance costs. The casters under the water storage base facilitate pavilion movement, adapting to the needs of different on-duty locations.

[0019] The water storage chamber of this utility model can store water that can meet the evaporation needs for 2-3 days in a high-temperature environment of 35℃. Combined with the convenient water replenishment design of the water inlet (water can be replenished without disassembling the structure), it can ensure continuous cooling. The evaporation core is made of composite sponge, and its circular array of polygonal evaporation channels increases the contact area between the air and the wetted core (improving cooling efficiency) and reduces airflow resistance (ensuring stable air intake of the fan). Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 This is a half-sectional structural schematic diagram of the present invention.

[0022] Figure 3 This is a schematic diagram of a half-section of the sunshade top cover of this utility model.

[0023] Figure 4 This is an exploded structural diagram of the sunshade top cover of this utility model.

[0024] In the picture:

[0025] 1. Water storage base; 2. Sunshade top cover; 3. Cooling evaporation column; 31. Support channel column; 32. Limiting plate; 33. Evaporation core; 34. Capillary cotton rope; 35. Evaporation channel; 36. Inspection cover; 37. Air inlet mesh cover; 38. Clip protrusion; 4. Secondary support column; 5. Casters; 6. Water inlet; 7. Plug; 8. Water storage chamber; 9. Connecting channel; 10. Discharge chamber; 11. Fan; 12. Discharge mesh. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0027] In the description of the embodiments, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for 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 the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present utility model based on the specific circumstances.

[0028] As attached Figure 1 To be continued Figure 4 As shown:

[0029] This utility model provides an outdoor sunshade and cooling guardhouse, comprising a water storage base 1, a sunshade top cover 2, a cooling evaporation column 3, a secondary support column 4, casters 5, a water inlet 6, a plug 7, a water storage chamber 8, a connecting channel 9, a discharge chamber 10, a fan 11, and a discharge mesh 12. The cooling evaporation column 3 and the secondary support column 4 are fixedly installed between the water storage base 1 and the sunshade top cover 2. The casters 5 are fixedly installed at the four corners below the water storage base 1. The water inlet 6 above the water storage base 1 is closed by the plug 7. The water storage chamber 8 is provided inside the water storage base 1. The connecting channel 9 and the discharge chamber 10 are connected inside the sunshade top cover 2. The fan 11 is fixedly installed in the discharge chamber 10. The discharge mesh 12 is installed below the discharge chamber 10, and the two are connected to each other.

[0030] Furthermore, the cooling evaporation column 3 includes a support channel column 31, a limiting plate 32, an evaporation core 33, a capillary cotton rope 34, and an evaporation channel 35. The support channel column 31 is welded from galvanized steel plate, with circular flanges welded to its upper and lower ends. These flanges are securely connected to the pre-embedded nuts on the upper surface of the water storage base 1 and the fixing lugs on the lower surface of the sunshade cover 2 using M8 stainless steel bolts, achieving rigid fixation between the support channel column 31 and the water storage base 1 and the sunshade cover 2. The internal cavity of the support channel column 31 runs from top to bottom. Its lower end aligns with and connects to a 10cm diameter connecting hole at the top of the water storage chamber 8 of the water storage base 1, while its upper end connects to the connecting channel 9 through a corresponding opening at the bottom of the sunshade cover 2, forming a complete airflow and water replenishment channel. Two circular limiting discs 32 are welded and fixed inside the support channel column 31 at axial intervals of 30-40cm. The two limiting discs 32 form a receiving space for installing the evaporation core 33. The evaporation core 33 is a cylindrical structure with its outer circle fitting with the inner wall of the support channel column 31. A capillary cotton rope 34 is installed through the central axis. The capillary cotton rope 34 is fixed to the evaporation core 33 as a whole by an environmentally friendly hydrophilic adhesive. At the same time, several evaporation channels 35 are evenly opened in the radial direction of the evaporation core 33 to form an air circulation path.

[0031] Furthermore, the evaporation core 33 is made of a composite sponge material, which is composed of a polyester fiber skeleton and a hydrophilic resin, possessing high water absorption and aging resistance, and has an overall cylindrical structure. The evaporation core 33 is installed at the lower end of the support channel column 31, with its lower edge 20-35cm away from the upper surface of the water storage base 1, ensuring a reasonable distance from the liquid in the water storage chamber 8 to avoid direct immersion. The capillary cotton rope 34 at the center of the evaporation core 33 is woven from ultra-fine composite fibers and has a strong capillary adsorption capacity. A stainless steel counterweight ball with a diameter of 1.5cm is fixed to its lower end by heat fusion. The counterweight ball can ensure that the capillary cotton rope 34 remains vertical in the support channel column 31 and that its lower end hangs down naturally. The total length of the capillary cotton rope 34 is 5-8cm longer than the distance from the lower end of the support channel column 31 to the bottom of the water storage chamber 8. After its lower end extends into the water storage chamber 8 of the water storage base 1, at least 10cm of its length is completely immersed in the liquid (clean water or an aqueous solution containing 0.1% preservative) in the water storage chamber 8, and continuously delivers liquid to the evaporation core 33 through capillary action.

[0032] Furthermore, 6-8 evaporation channels 35 are vertically penetrated along the axial direction on the evaporation core 33. These evaporation channels 35 are arranged in a circular array with the central axis of the evaporation core 33 as the center. The cross-section of each evaporation channel 35 is a regular hexagon. Compared with circular channels, this structure can increase the inner wall surface area by 30%, improving the contact efficiency between air and the evaporation core. The limiting plates 32 at the upper and lower positions of the evaporation core 33 are provided with corresponding through holes: the through holes corresponding to the evaporation channels 35 are regular hexagonal (0.5mm larger than the evaporation channels 35) and coaxially aligned with the evaporation channels 35 to ensure smooth airflow; the through holes corresponding to the capillary cotton rope 34 are circular (10-12mm in diameter), allowing the stainless steel counterweight ball to pass through.

[0033] Furthermore, a rectangular inspection port is provided on the support channel column 31 on one side of the evaporator core 33. An inspection cover 36 is installed at the inspection port using four M6 bolts. The inspection cover 36 is injection molded from ABS engineering plastic and has a rubber sealing strip around its edge. It fits tightly against the edge of the inspection port on the support channel column 31 to achieve a dustproof and waterproof seal. After disassembly, it can be directly removed or inserted into the evaporator core 33, providing a convenient replacement and maintenance channel. An air inlet is provided on the support channel column 31 on the lower side of the evaporator core 33. An air inlet mesh cover 37 is installed at the air inlet using three M5 bolts. The air inlet mesh cover 37 has a metal mesh structure, and its edges are flanged to fit against the outer wall of the support channel column 31, providing a filtered channel for outside air to enter the support channel column 31. A rectangular recess is integrally formed on one side of the outer circumference of the evaporation core 33. This recess matches the locking protrusion 38 on the inner wall of the support channel column 31. The locking protrusion 38 is a rectangular structure, made of the same steel plate as the support channel column 31, which is stamped and welded to the inner wall. It is located in the middle between the upper and lower limit plates 32. Through the interference fit between the recess and the locking protrusion 38, the evaporation core 33 can be prevented from rotating or shifting under the impact of airflow.

[0034] Furthermore, a removable filter (matching the size of the air inlet cover 37) is installed on the inner side of the air inlet cover 37 via two plastic clips and one M4 bolt. The filter is made of nylon and can filter dust, insects, and other impurities in the air, preventing blockage of the evaporation channel 35. The filter edge is provided with elastic edging for easy disassembly, cleaning, or replacement. The flow path of the outside air is as follows: Under the negative pressure of the fan 11, the outside air is first initially filtered by the metal mesh of the air inlet cover 37, then finely filtered by the nylon filter before entering the support channel column 31. It is then evenly distributed to each evaporation channel 35 of the evaporation core 33. During the flow through the channel, it comes into contact with the wetted inner wall of the core to complete heat exchange and cooling. Afterward, it flows upward into the connecting channel 9 of the sunshade cover 2. After being guided by the connecting channel 9, it enters the discharge chamber 10 and stays briefly (to homogenize the airflow). Finally, it is directionally discharged to the duty area through the discharge mesh 12 at the bottom of the discharge chamber 10.

[0035] Furthermore, the fan 11, which is fixedly installed inside the discharge chamber 10 by a bracket, is a low-noise axial flow fan (power 20-30W, air volume 150-200m³ / h). 3 During operation, a negative pressure gradient is formed from top to bottom within the discharge chamber 10, connecting channel 9, and supporting channel column 31, driving outside air to continuously enter and complete circulation. The discharge mesh 12 is made of ABS plastic and has an overall rectangular grid structure. It is installed on the lower surface of the sunshade cover 2 with clips to ensure that the cooled air can be directly blown to the main heat dissipation areas of the human body. The water inlet 6 on one side of the upper surface of the water storage base 1 is connected to the inside of the water storage chamber 8. The inner wall of the water inlet 6 is provided with internal threads, which are threaded to the plug 7 (with external threads on the outer wall and a non-slip handle on the top). A silicone gasket is provided between the two to achieve a seal and prevent liquid leakage from the water storage chamber 8.

[0036] Furthermore, the four corner casters 5 installed below the water storage base 1 are heavy-duty self-locking casters. Their wheels are made of highly elastic rubber and equipped with a foot-operated locking mechanism. Stepping on the locking pedal secures the wheels, preventing accidental movement of the pavilion during duty. A rectangular mounting cavity is pre-reserved on one side of the water storage base 1, housing a 12V / 20Ah lead-acid battery. This battery is connected via wires to a 50W monocrystalline silicon photovoltaic module mounted on the upper surface of the sunshade cover 2. A charge / discharge controller (installed on the upper part of the support channel column 31) is connected in series between the two, forming an independent solar power module to power the fan 11 and other electrical components. A switch module is bolted to the surface of the support channel column 31 1.5m from the upper surface of the water storage base 1. This module is encapsulated in a waterproof box and contains a fan start / stop switch, a main power switch, and a power indicator light, allowing personnel to manually control the opening and closing of various components according to the ambient temperature.

[0037] The working principle is as follows: First, liquid is injected into the water storage chamber 8 of the water storage base 1 through the water injection port 6. The liquid is stored in the water storage chamber 8. Then, the water injection port 6 is sealed with the plug 7 to prevent liquid leakage.

[0038] Secondly, the lower end of the capillary cotton rope 34 in the center of the evaporation core 33 hangs down naturally due to the counterweight ball and is immersed in the liquid in the water storage chamber 8. Through capillary action, the liquid permeates upward along the capillary cotton rope 34 and gradually wets the entire evaporation core 33, keeping the evaporation core 33 in a continuously moist state.

[0039] Then, the fan 11 is turned on via the switch module. The fan 11 operates within the discharge chamber 10, creating negative pressure. This negative pressure is transmitted through the connecting channel 9 to the support channel column 31 of the cooling evaporation column 3. Under the action of negative pressure, outside air is initially filtered by the metal mesh of the air inlet cover 37 and then finely filtered by the inner filter before entering the interior of the support channel column 31. The filtered air is then distributed to each evaporation channel 35 of the evaporation core 33. During its flow through the evaporation channel 35, the air comes into full contact with the wetted inner wall of the evaporation core 33, and the heat in the air is absorbed by the evaporated moisture, thus achieving air cooling.

[0040] Finally, the cooled air continues to flow upwards, enters the discharge chamber 10 through the connecting channel 9, and lingers briefly to homogenize the airflow. It is then directionally discharged through the discharge mesh 12, blowing towards the guard area above the water storage base 1. Simultaneously, the sunshade cover 2 blocks direct sunlight, achieving a combined sunshade and cooling effect. Meanwhile, the photovoltaic modules above the sunshade cover 2 absorb solar energy and convert it into electrical energy, which is stored in the battery inside the water storage base 1 via a charge / discharge controller (installed on the upper part of the support channel column 31), providing continuous power to the fan 11 and switch modules. If the guard post needs to be moved, the casters 5 under the water storage base 1 can be unlocked, the post pushed to the designated position, and then the casters 5 can be locked again to ensure stable placement. The secondary support column 4 and the cooling evaporation column 3 together support the sunshade cover 2, ensuring the stability of the post structure.

[0041] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. A guard booth for outdoor sun-shading and cooling, characterized in that, The system includes a water storage base (1), a sunshade cover (2), a cooling evaporation column (3), a secondary support column (4), casters (5), a water inlet (6), a plug (7), a water storage chamber (8), a connecting channel (9), a discharge chamber (10), a fan (11), and a discharge mesh (12). The cooling evaporation column (3) and the secondary support column (4) are fixedly installed between the water storage base (1) and the sunshade cover (2). The casters (5) are fixedly installed at the four corners below the water storage base (1). The water inlet (6) above the water storage base (1) is closed by the plug (7). The water storage chamber (8) is provided inside the water storage base (1). The connecting channel (9) and the discharge chamber (10) are connected to each other inside the sunshade cover (2). The fan (11) is fixedly installed in the discharge chamber (10). The discharge mesh (12) is installed below the discharge chamber (10). The two are connected to each other.

2. The outdoor sunshade and cooling guardhouse as described in claim 1, characterized in that: The cooling evaporation column (3) includes a support channel column (31), a limiting plate (32), an evaporation core (33), a capillary cotton rope (34), and an evaporation channel (35). The upper and lower ends of the support channel column (31) are respectively provided with flanges, which are fixedly connected to the water storage base (1) and the sunshade cover (2) with bolts. The interior of the support channel column (31) is connected to the water storage chamber (8) and the connecting channel (9). An evaporation core (33) is provided between the two limiting plates (32) fixedly installed inside the support channel column (31). The capillary cotton rope (34) is provided in the center of the evaporation core (33). Several evaporation channels (35) are opened through the evaporation core (33).

3. The outdoor sunshade and cooling guardhouse as described in claim 2, characterized in that: The evaporation core (33) is a cylindrical structure made of composite sponge. The evaporation core (33) is located at the lower end of the support channel column (31) and close to the water storage base (1). The capillary cotton rope (34) at the center of the evaporation core (33) has a counterweight ball at its lower end. The lower end of the capillary cotton rope (34) extends into the water storage cavity (8) of the water storage base (1) and is soaked in the liquid in the water storage cavity (8).

4. The outdoor sunshade and cooling guardhouse as described in claim 3, characterized in that: The evaporation core (33) has several circular arrays of evaporation channels (35) vertically arranged through it. The cross-section of the evaporation channel (35) is a polygonal channel. The limiting plates (32) at the upper and lower positions of the evaporation core (33) are all provided with through holes that match and correspond to the evaporation channel (35) and the capillary cotton rope (34).

5. The outdoor sunshade and cooling guardhouse as described in claim 4, characterized in that: An inspection cover (36) is bolted to the support channel column (31) on one side of the evaporator core (33). The inspection cover (36) provides a replacement and maintenance port for the evaporator core (33). An air inlet cover (37) is bolted to the support channel column (31) on the lower side of the evaporator core (33). The air inlet cover (37) provides an inlet for outside air. A recess matching the locking protrusion (38) is provided on one side of the evaporator core (33). The locking protrusion (38) is integrally set on the inner wall of the support channel column (31) and located between the upper and lower limiting discs (32).

6. The outdoor sunshade and cooling guardhouse as described in claim 5, characterized in that: A removable filter screen is installed on the air inlet cover (37) by bolts. Outside air can enter the support channel column (31) through the air inlet cover (37), flow through the evaporation channel (35) of the evaporation core (33) and enter the connecting channel (9) of the sunshade top cover (2), then stay in the discharge chamber (10) and be discharged through the discharge mesh (12).

7. The outdoor sunshade and cooling guardhouse as described in claim 6, characterized in that: The fan (11) inside the discharge chamber (10) forms a negative pressure area for outside air to enter. The discharge mesh (12) is installed below the sunshade top cover (2) and above the water storage base (1). The water inlet (6) of the water storage base (1) is connected to the water storage chamber (8).