A water curtain fresh air system

Abstract

This utility model relates to a water curtain fresh air system, including an air inlet box, an air inlet pipe, and an air outlet pipe. The air inlet box is connected to the air inlet pipe and the air outlet pipe on its left and right sides, respectively. This water curtain fresh air system utilizes a water curtain circulation cooling mechanism. First, when air is drawn into the water curtain filled with cooling water by an exhaust fan, the cooling water transforms from a liquid state to a gaseous state, absorbing heat energy from the air and achieving a cooling effect. Then, by setting up a lower water collection tank and a guide plate, excess cooling water on the water curtain can be collected in the lower water collection tank through the guide plate. Finally, by setting up a water extraction pipe and a circulation pump, the cooling water in the collection tank is circulated back to the water curtain makeup sprayer. This utility model improves the cooling water utilization rate by approximately 80%, significantly reducing water consumption and the frequency of water replenishment, while avoiding the energy waste problem caused by frequent water replenishment in traditional open systems.

Description

Technical Field

[0001] This utility model relates to the field of indoor air exchange technology, specifically a water curtain fresh air system. Background Technology

[0002] In modern building ventilation systems, water curtain fresh air systems serve as an environmental control device integrating ventilation, cooling, dehumidification, and air purification. They achieve temperature and humidity regulation and pollutant filtration through heat exchange between the water curtain and the air. While existing technologies (such as Chinese patent number CN201320234980.2) employ a combination of water curtain and fan for air cooling, they suffer from the following technical drawbacks:

[0003] 1. Existing systems mostly use an open-type water curtain structure. When hot air passes through the water curtain, a large amount of cooling water evaporates and is not recycled, requiring a continuous supply of fresh water. This design not only causes repeated consumption of water resources but also significantly increases maintenance costs due to frequent water replenishment operations.

[0004] 2. Most existing equipment arranges the air inlet and outlet ducts directly in parallel, lacking optimized design for airflow direction. For example, the end of the air inlet duct is not angled, allowing rainwater to easily enter the system with the airflow; at the same time, the outlet is not equipped with a filter, failing to effectively block dust and other impurities from secondary air pollution.

[0005] 3. Traditional water curtains rely on gravity for drainage, but in actual operation, imperfect flow guiding structures often lead to water accumulation and accelerated mold and corrosion of the water curtain. In addition, the circulation and replenishment of cooling water depends on manual operation, failing to achieve automated replenishment.

[0006] Therefore, how to solve the technical problems existing in the above-mentioned prior art has become an urgent problem for technicians in this field. Utility Model Content

[0007] In view of the shortcomings of the existing technology, this utility model provides a water curtain fresh air system, which can solve the technical problems existing in the above-mentioned existing technology.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A water curtain fresh air system includes an air inlet box, an air inlet pipe, and an air delivery pipe. One end of the air inlet box is connected to the air inlet pipe, and the other end is connected to the air delivery pipe. The air inlet box is equipped with a water curtain circulation cooling mechanism.

[0010] The water curtain circulating cooling mechanism includes a circulating pump installed on the inner wall of the air inlet box and a water curtain makeup sprayer on the inner top. The bottom of the air inlet box is provided with a water collection tank, a guide plate is installed on the top surface of the water collection tank, and a water curtain is fixedly installed above the guide plate. The water curtain makeup sprayer is correspondingly arranged above the water curtain. The water curtain makeup sprayer has multiple spray nozzles on one side corresponding to the water curtain. The water pump's pumping end is connected to the water collection tank through a pumping pipe, and the pump's draining end is connected to the water curtain makeup sprayer through a circulating water pipe.

[0011] Preferably, the width of the guide plate is greater than the width of the water curtain.

[0012] Preferably, the air inlet pipe is inclined downwards.

[0013] Preferably, an exhaust fan is installed inside the air duct.

[0014] Preferably, a first filter grille is installed at the connection end between the air inlet box and the air inlet pipe, and a second filter grille is installed at the air outlet end of the air duct.

[0015] Preferably, the outer wall of the air inlet box is provided with a water inlet corresponding to the water collection tank.

[0016] Preferably, the outer wall of the air inlet box is provided with a transparent observation window corresponding to the water collection tank.

[0017] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0018] 1. By installing a circulating pump, a water curtain makeup sprayer, and a water collection tank inside the air intake box, a closed-loop cooling water circulation circuit is formed. When hot air passes through the water curtain, the liquid cooling water evaporates and absorbs heat, and the excess water is collected in the water collection tank through the guide plate. The circulating pump draws cooling water from the water collection tank through the pumping pipe and delivers it to the water curtain makeup sprayer through the circulating water pipe, where it is evenly sprayed onto the surface of the water curtain. This design increases the cooling water utilization rate by approximately 80%, significantly reduces water consumption and makeup water frequency, and avoids the energy waste caused by frequent makeup water replenishment in traditional open systems.

[0019] 2. The design of the guide plate being wider than the water curtain ensures that excess water on the water curtain surface quickly flows along the inclined surface of the guide plate to the water collection tank, preventing water residue from causing corrosion or mold growth in the water curtain. Experimental data shows that this structure can shorten the drying time of the water curtain by 40% and extend the service life of the equipment by more than 30%.

[0020] 3. The air inlet duct is angled downwards, effectively preventing rainwater or debris from entering the air inlet box with the airflow. Combined with the first filter grille at the connection between the air inlet box and the air inlet duct, it further intercepts large particles of impurities, ensuring the cleanliness of the system and reducing maintenance costs.

[0021] 4. The built-in exhaust fan in the air duct provides active air supply, which, together with the water curtain cooling module in the air inlet box, achieves a combined function of "cooling + pressurization". Compared with traditional solutions that rely on natural ventilation, this system improves airflow stability by 50%, can quickly replace indoor stale air, and maintain environmental comfort. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a front sectional view of the structure of this utility model;

[0024] Figure 3 This is a left sectional view of the structure of this utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the guide plate in this utility model.

[0026] In the diagram: 1. Air inlet box; 2. Water curtain circulating cooling mechanism; 201. Water collection tank; 202. Guide plate; 203. Circulating pump; 204. Water curtain makeup sprayer; 205. Water curtain; 206. Spray nozzle; 207. Water extraction pipe; 208. Circulating water pipe; 3. Air inlet pipe; 4. Air delivery pipe; 5. Exhaust fan; 6. First filter screen; 7. Second filter screen; 8. Water inlet; 9. Transparent observation window. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-4 A water curtain fresh air system includes an air inlet box 1, an air inlet pipe 3 and an air delivery pipe 4. The air inlet box 1 is connected to the air inlet pipe 3 and the air delivery pipe 4 on its left and right sides respectively. The air inlet box 1 is equipped with a water curtain circulation cooling mechanism 2.

[0029] The water curtain circulating cooling mechanism 2 includes a circulating pump 203 installed on the inner wall of the air inlet box 1 and a water curtain makeup sprayer 204 on the inner top. A water collection tank 201 is provided at the bottom of the air inlet box 1. A guide plate 202 is installed on the top surface of the water collection tank 201, and a water curtain 205 is fixedly installed above the guide plate 202. The water curtain makeup sprayer 204 is correspondingly positioned above the water curtain 205, and has multiple spray nozzles 206 on one side corresponding to the water curtain 205. The pumping end of the circulating pump 203 is connected to the water collection tank 201 via a pumping pipe 207, and the draining end of the circulating pump 203 is connected to the water curtain makeup sprayer 204 via a circulating water pipe 208. The width of the guide plate 202 is greater than the width of the water curtain 205.

[0030] In this embodiment, when hot outdoor air is drawn into the water curtain 205 filled with cooling water by the exhaust fan 5, the cooling water changes from a liquid state to a gaseous state, absorbing a large amount of heat energy from the air and lowering the temperature of the air passing through the water curtain 205, thereby achieving a cooling effect. Excess cooling water on the water curtain 205 falls to the guide plate 202 and flows into the water collection tank 201 below. The circulation pump 203 draws water from the water collection tank 201 through the water extraction pipe 207 and delivers it to the water curtain makeup sprayer 204 through the circulation water pipe 208. The water curtain makeup sprayer 204 sprays the cooling water evenly onto the water curtain 205 through the spray nozzle 206.

[0031] In the implementation of the case, the air inlet pipe 3 is set at an angle downward. Specifically, the left air inlet end of the air inlet pipe 3 is lower than the connection end connected to the left side of the air inlet box 1. This design can effectively prevent rainwater or other impurities from entering the air inlet pipe 3.

[0032] In the implementation of the case, an exhaust fan 5 is installed inside the air duct 4 to achieve the function of ventilation.

[0033] In the implementation case, a first filter grille 6 is installed at the connection end between the air inlet box 1 and the air inlet duct 3, and a second filter grille 7 is installed at the air outlet end of the air duct 4. Both the first filter grille 6 and the second filter grille 7 are made of stainless steel, giving them excellent weather resistance and corrosion resistance, ensuring the long-term stable use of the system. Furthermore, these grilles provide barrier, restriction, and protection functions, making them crucial in the water curtain fresh air system and ensuring its normal operation and safe use.

[0034] The outer wall of the air inlet box 1 is provided with a water inlet 8 and a transparent observation window 9 corresponding to the water collection tank 201. The water level in the water collection tank 201 can be observed at any time through the transparent observation window 9. When the water level is insufficient, the water collection tank 201 can be replenished in time through the water inlet 8.

[0035] Work process:

[0036] 1) When the exhaust fan 5 is started, outdoor hot air is drawn in through the air inlet duct 3. The hot air passes through the water curtain 205 filled with cooling water. The cooling water will change from liquid to gaseous water molecules, absorbing a large amount of heat energy in the air, thereby achieving the cooling effect.

[0037] 2) Some of the cooling water from the water curtain 205 falls and flows into the water collection tank 201 through the guide plate 202;

[0038] 3) The circulating pump 203 draws cooling water from the water collection tank 201 through the water pumping pipe 207 and delivers it to the water curtain makeup sprayer 204 through the circulating water pipe 208.

[0039] 4) The water curtain water sprayer 204 sprays cooling water evenly onto the water curtain 205 through the spray nozzle 206 to form a circulation.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water curtain fresh air system, comprising an air inlet box (1), an air inlet duct (3), and an air supply duct (4), characterized in that: One end of the air inlet box (1) is connected to the air inlet pipe (3), and the other end is connected to the air supply pipe (4). The air inlet box (1) is equipped with a water curtain circulation cooling mechanism (2). The water curtain circulating cooling mechanism (2) includes a circulating pump (203) installed on the inner wall of the air inlet box (1) and a water curtain water replenishment sprayer (204) on the inner top. The bottom of the air inlet box (1) is provided with a water collection tank (201). A guide plate (202) is installed on the top surface of the water collection tank (201). A water curtain (205) is fixedly installed above the guide plate (202). The water curtain water replenishment sprayer (204) is correspondingly arranged above the water curtain (205). The water curtain water replenishment sprayer (204) is provided with multiple spray nozzles (206) on one side of the water curtain (205). The pumping end of the circulating pump (203) is connected to the water collection tank (201) through a pumping pipe (207). The draining end of the circulating pump (203) is connected to the water curtain water replenishment sprayer (204) through a circulating water pipe (208).

2. The water curtain fresh air system according to claim 1, characterized in that: The width of the guide plate (202) is greater than the width of the water curtain (205).

3. The water curtain fresh air system according to claim 1, characterized in that: The air inlet pipe (3) is set at an angle downwards.

4. The water curtain fresh air system according to claim 1, characterized in that: An exhaust fan (5) is installed inside the air duct (4).

5. A water curtain fresh air system according to claim 1, characterized in that: The air inlet box (1) is connected to the air inlet pipe (3) with a first filter screen (6) installed at the connection end, and the air outlet end of the air duct (4) is connected to a second filter screen (7).

6. The water curtain fresh air system according to claim 1, characterized in that: The outer wall of the air inlet box (1) is provided with a water inlet (8) corresponding to the water collection tank (201).

7. A water curtain fresh air system according to claim 1, characterized in that: The outer wall of the air inlet box (1) is provided with a transparent observation window (9) corresponding to the water collection tank (201).

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