Integrated evaporative condenser

Abstract

The utility model relates to evaporative condensing heat exchanger field discloses an integrated evaporative condensing heat exchanger, including equipment body and heat exchange coil, the equipment body inside middle position is installed with heat exchange coil, heat exchange coil right side is provided with refrigerant outlet and refrigerant inlet respectively, refrigerant outlet and refrigerant inlet extend to equipment body outside, the heat exchange coil below is provided with the water collecting tank, the heat exchange coil top is provided with the water retaining frame. This integrated evaporative condensing heat exchanger is provided with the spray system that spray pipe and nozzle constitute through setting up circulating pump, makes heat exchange coil surface to cover a layer of even water film continuously, enhances the heat exchange efficiency, effectively inhibits the dirt accumulation of coil surface through the evaporation of water film, through the continuous flow and evaporation process of water film, not only has accelerated the condensing heat exchange of refrigerant, forms the self -cleaning effect, reduces the cleaning maintenance frequency, prolongs the service life of equipment, solved the problem that heat exchange coil heat exchange efficiency is low and easy to accumulate water scale.

Description

Technical Field

[0001] This utility model relates to the field of evaporative condensing heat exchanger technology, specifically an integrated evaporative condensing heat exchanger. Background Technology

[0002] Evaporative condensing heat exchangers are commonly used heat exchange devices in air conditioning systems, chillers, and industrial refrigeration equipment. They primarily achieve efficient condensation of the gaseous refrigerant by forming a water film on the surface of the heat exchange coils using cooling water. The evaporation of this water film removes heat from the refrigerant. Integrated evaporative condensing heat exchangers typically integrate the heat exchange coils, spray system, fan, and water circulation system into a single unit, resulting in a compact structure, small footprint, and ease of transportation and installation.

[0003] In integrated evaporative-condensing heat exchangers, cooling water is drawn in by a circulating pump and sprayed onto the outer wall of the heat exchange coils, forming a continuous and stable water film. This water film evaporates and absorbs heat under the influence of airflow, condensing the refrigerant. However, existing integrated evaporative-condensing heat exchangers still have some shortcomings in practical applications, such as:

[0004] In commonly used equipment, the surface of heat exchange coils, due to their prolonged exposure to a humid environment, easily attracts dust particles and impurities from the air. As the spray water circulates, these particles continuously deposit, gradually forming scale and a layer of dirt on the coil surface. Scale formation not only reduces the heat exchange efficiency between the heat exchange coil and the cooling water, leading to incomplete refrigerant condensation and affecting overall heat exchange performance, but also causes localized overheating, increasing energy consumption and reducing the economic efficiency of equipment operation. Simultaneously, the accumulation of scale and dirt increases airflow resistance, further impacting airflow efficiency. Because heat exchange coils are typically densely packed and mostly located inside the equipment body, cleaning and maintenance space is limited, making manual cleaning difficult, time-consuming, and inefficient.

[0005] Therefore, there is an urgent need for an integrated evaporative-condensing heat exchanger to solve the above-mentioned technical defects. Utility Model Content

[0006] The purpose of this invention is to provide an integrated evaporative condenser heat exchanger to solve the problems of low heat exchange efficiency and easy scale accumulation in heat exchange coils mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an integrated evaporative condensing heat exchanger, comprising a device body and a heat exchange coil. The heat exchange coil is installed in the middle of the device body. A refrigerant outlet and a refrigerant inlet are respectively provided on the right side of the heat exchange coil. The refrigerant outlet and the refrigerant inlet extend to the outside of the device body. A water collection tank is provided below the heat exchange coil. A water baffle is provided above the heat exchange coil. A negative pressure fan is provided above the water baffle. A spray pipe is fixedly connected to the bottom of the water baffle. Multiple sets of nozzles are arranged at the bottom of the spray pipe. A circulation pump is installed on the left side of the outer wall of the device body. A circulation pipe is connected between the input end of the circulation pump and the water collection tank. A water supply pipe is connected between the output end of the circulation pump and the spray pipe.

[0008] As a further technical solution of this utility model, the bottom of the water collection tank is inclined, and the circulation pipe is connected to the lowest point of the water level in the water collection tank.

[0009] As a further technical solution of this utility model, outdoor air inlets are installed on both the left and right side walls of the equipment body, and an exhaust fan is installed in each outdoor air inlet. An opening and closing motor is fixedly connected to the outer wall of the equipment body above the outdoor air inlet, and a baffle is fixedly sleeved on the output shaft of the opening and closing motor.

[0010] As a further technical solution of this utility model, the outdoor air inlet is provided in two sets, and the two sets of outdoor air inlets are symmetrically distributed about the vertical center line of the equipment body.

[0011] As a further technical solution of this utility model, the negative pressure fan includes a set of fan blades installed on the top of the equipment body, an exhaust port is provided above the fan blades, and a rain cover is fixed outside the exhaust port.

[0012] As a further technical solution of this utility model, the water baffle is provided with grooves on both the left and right sides, and water baffles are inserted into the grooves. The two sets of water baffles abut and close to form a water baffle area.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the integrated evaporative condenser not only enhances heat exchange efficiency, inhibits the accumulation of dirt on the coil surface, realizes full recovery and recycling of spray water, and reduces dead water areas, but also improves maintenance convenience and reduces maintenance costs.

[0014] (1) By setting up a spray system consisting of a circulating pump, spray pipe and nozzle, a uniform water film is continuously covered on the surface of the heat exchange coil, which enhances the heat exchange efficiency. The water film evaporation effectively inhibits the accumulation of dirt on the coil surface. Through the continuous flow and evaporation process of the water film, not only is the condensation heat exchange of the refrigerant accelerated, but a self-cleaning effect is formed, reducing the frequency of cleaning and maintenance and extending the service life of the equipment.

[0015] (2) By setting up a water collection tank, water supply pipe, circulation pump and circulation pipe, the spray water is fully recovered and recycled, reducing dead water areas and avoiding water waste; avoiding bacterial growth and equipment corrosion caused by water accumulation, extending service life and being green and environmentally friendly;

[0016] (3) By setting an outdoor air inlet, a start and stop motor, a baffle door and a pull-out water baffle structure, dust, impurities and foreign objects are blocked from entering the interior when not in operation, thus extending the equipment maintenance cycle. At the same time, a water baffle area is formed by inserting two water baffles, and the plug-in structure makes it easy for maintenance personnel to disassemble and replace, greatly improving the convenience of maintenance and reducing maintenance costs. Attached Figure Description

[0017] Figure 1 This is a frontal cross-sectional view of the present invention.

[0018] Figure 2 This is a top view of the water baffle structure of this utility model;

[0019] Figure 3 This is a side view schematic diagram of the outdoor air inlet structure of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the water collection tank of this utility model.

[0021] In the diagram: 1. Equipment body; 2. Outdoor air inlet; 3. Baffle; 4. Starter motor; 5. Refrigerant outlet; 6. Heat exchange coil; 7. Refrigerant inlet; 8. Nozzle; 9. Spray pipe; 10. Water baffle; 11. Groove; 12. Water baffle frame; 13. Negative pressure fan; 14. Fan blade; 15. Rain cover; 16. Exhaust vent; 17. Water supply pipe; 18. Circulation pump; 19. Circulation pipe; 20. Water collection tank; 21. Exhaust fan. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-4An embodiment of this utility model provides an integrated evaporative condenser heat exchanger, including a device body 1 and a heat exchange coil 6. The heat exchange coil 6 is installed in the middle of the device body 1. A refrigerant outlet 5 and a refrigerant inlet 7 are respectively provided on the right side of the heat exchange coil 6. The refrigerant outlet 5 and the refrigerant inlet 7 extend to the outside of the device body 1. A water collection tank 20 is provided below the heat exchange coil 6. A water baffle 12 is provided above the heat exchange coil 6. A negative pressure fan 13 is provided above the water baffle 12. A spray pipe 9 is fixedly connected to the bottom of the water baffle 12. Multiple sets of nozzles 8 are arranged at the bottom of the spray pipe 9. A circulation pump 18 is installed on the left side of the outer wall of the device body 1. A circulation pipe 19 is connected between the input end of the circulation pump 18 and the water collection tank 20. A water supply pipe 17 is connected between the output end of the circulation pump 18 and the spray pipe 9.

[0024] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, after the circulation pump 18 starts, it transports the cooling water in the water collection tank 20 to the spray pipe 9 through the circulation pipe 19, and sprays it evenly onto the surface of the heat exchange coil 6 through the nozzle 8 to form a stable water film covering layer. Outdoor air enters the equipment body 1 from the outdoor air inlet 2 and comes into contact with the water film flowing from top to bottom in the opposite direction. The water film evaporates during the contact with the air, absorbing a large amount of latent heat, and takes away the heat of the gaseous refrigerant in the heat exchange coil 6, causing it to condense into liquid and be discharged through the refrigerant outlet 5.

[0025] The bottom of the water collection tank 20 is inclined, and the circulation pipe 19 is connected to the lowest point of the water level in the water collection tank 20.

[0026] Specifically, such as Figure 1 and Figure 4 As shown, during operation, the water film sprayed on the heat exchange coil 6 absorbs heat and evaporates. The unevaporated part gathers in the water collection tank 20 located at the bottom of the equipment. The bottom of the water collection tank 20 is provided with an inclined slope to facilitate the natural flow of cooling water to the lowest point. The circulation pipe 19 is connected to the lowest water point to effectively reduce the dead water area and avoid water waste. The circulation pump 18 pumps the water accumulated at the low point back to the spray system to realize the closed-loop recycling of water resources.

[0027] Outdoor air inlets 2 are installed on both the left and right side walls of the equipment body 1. Each outdoor air inlet 2 is equipped with an exhaust fan 21. An opening and closing motor 4 is fixedly connected to the outer wall of the equipment body 1 above the outdoor air inlet 2. A baffle 3 is fixedly sleeved on the output shaft of the opening and closing motor 4. There are two sets of outdoor air inlets 2, which are symmetrically distributed about the vertical center line of the equipment body 1. The negative pressure fan 13 includes a set of fan blades 14 installed on the top of the equipment body 1. An exhaust port 16 is provided above the fan blades 14. A rain cover 15 is fixed outside the exhaust port 16. The water baffle 12 has grooves 11 on both the left and right sides. A water baffle 10 is inserted into the grooves 11. The two sets of water baffles 10 abut and close to form a water-blocking area.

[0028] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, when the equipment is running, the start-stop motor 4 drives the baffle 3 to open, allowing outdoor air to flow smoothly into the equipment body 1 through the outdoor air inlet 2. This, together with the negative pressure fan 13 and the fan blades 14, forms a stable airflow, promoting heat exchange. The top exhaust vent 16 is equipped with a rain shelter 15 to effectively prevent rainwater intrusion. When not in operation, the start-stop motor 4 drives the baffle 3 to close the outdoor air inlet 2, blocking dust, impurities, and foreign objects from entering the interior and extending the equipment maintenance cycle. At the same time, a water baffle 12 and a pluggable water baffle 10 are installed above the heat exchange coil 6. The water baffle 12 has grooves 11 on both sides, and the water baffle 10 is formed by plugging in two water baffles 10. The pluggable structure makes it easy for maintenance personnel to disassemble and replace the baffles.

[0029] The computer software involved in the heat exchange coil 6 carrier in the technical solution is software technology known to those skilled in the art; it is merely applied to the aforementioned hardware carrier. In other words, the computer software portion of the technical solution is an essential technical feature for solving the aforementioned technical problem, constituting a necessary technical feature for the technical problem solved by this application, but it is not a differentiating technical feature or a point of technical improvement. The applicant has not made any technical improvements to the computer software portion involved in the aforementioned related hardware carrier, nor is it a key technical point of the invention.

[0030] Therefore, it can be seen that the "start-stop motor 4", "negative pressure fan 13", "circulation pump 18", "induced draft fan 21" and other components involved in this application are all physical functional modules that combine existing computer software programs or protocols with the hardware carrier of this application. The computer software programs involved in these physical functional modules are all technologies known to those skilled in the art and are not improvements of this application. The improvement of this application should be the interaction relationship between the various physical functional modules, that is, the improvement of the overall structure of this application, in order to solve the corresponding technical problems to be solved by this application.

[0031] Working principle: After the equipment is started, the start-stop motor 4 first drives the damper 3 to open, and outdoor air flows into the equipment body 1 through the outdoor air inlet 2. The induced draft fan 21 starts simultaneously, accelerating the flow of outdoor air. Under the action of the induced draft fan 21, the outdoor air enters the equipment steadily and flows upward through the flow channel. The negative pressure fan 13 and its blades 14 rotate to form an internal negative pressure, further enhancing the airflow. The airflow is finally discharged from the exhaust port 16, which is equipped with a rain shelter 15. The rain shelter 15 effectively prevents rainwater from flowing back into the equipment. Internally, to ensure the dryness of the heat exchange area and the long-term stable operation of the equipment, the circulating pump 18 starts, drawing and delivering the cooling water stored in the water collection tank 20 through the circulating pipe 19 to the spray pipe 9. The cooling water is then evenly sprayed onto the surface of the heat exchange coil 6 through the nozzles 8, forming a continuous and stable water film. Under the action of gravity, the water film flows downward, forming a counter-current contact with the outdoor air entering from below. During this counter-current contact with the air, the water film continuously evaporates, absorbing a large amount of latent heat and carrying away the heat from the gaseous refrigerant inside the heat exchange coil 6. The refrigerant is rapidly condensed into a liquid state and discharged from the refrigerant outlet 5, thus achieving efficient heat exchange. During the spray water circulation process, the incompletely evaporated water film drips into the water collection tank 20 at the bottom of the equipment under the action of gravity. The bottom of the water collection tank 20 is arranged at an incline, and the water flow naturally collects to the lowest point. The circulation pipe 19 is connected to the lowest water level, effectively avoiding the formation of dead water zones and improving the cooling water recovery efficiency. The circulation pump 18 continuously pumps the cooling water in the water collection tank 20 to the spray system, forming a closed-loop recycling of water resources and reducing water consumption. To reduce water consumption and improve environmental performance, a water baffle 12 is installed above the heat exchange coil 6 to prevent splashing water from affecting other internal components. The water baffle 12 has grooves 11 on both sides and is connected to a pull-out baffle plate 10. The two baffle plates 10 close together to form a water-blocking area, effectively blocking splashing water droplets. When the equipment stops running, the start / stop motor 4 drives the baffle door 3 to close the outdoor air inlet 2, effectively isolating dust, impurities and foreign objects from entering, further protecting the heat exchange system and extending the service life of the equipment.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An integrated evaporative-condensing heat exchanger, comprising a device body (1) and heat exchange coils (6), characterized in that: A heat exchange coil (6) is installed in the middle of the equipment body (1). A refrigerant outlet (5) and a refrigerant inlet (7) are respectively provided on the right side of the heat exchange coil (6). The refrigerant outlet (5) and the refrigerant inlet (7) extend to the outside of the equipment body (1). A water collection tank (20) is provided below the heat exchange coil (6). A water baffle (12) is provided above the heat exchange coil (6). A negative pressure fan (13) is provided above the water baffle (12). A spray pipe (9) is fixedly connected to the bottom of the water baffle (12). Multiple sets of nozzles (8) are arranged at the bottom of the spray pipe (9). A circulation pump (18) is installed on the left side of the outer wall of the equipment body (1). A circulation pipe (19) is connected between the input end of the circulation pump (18) and the water collection tank (20). A water supply pipe (17) is connected between the output end of the circulation pump (18) and the spray pipe (9).

2. An integrated evaporative-condensing heat exchanger according to claim 1, characterized in that: The bottom of the water collection tank (20) is inclined, and the circulation pipe (19) is connected to the lowest point of the water level in the water collection tank (20).

3. An integrated evaporative-condensing heat exchanger according to claim 1, characterized in that: The equipment body (1) has outdoor air inlets (2) installed on both the left and right side walls. Each outdoor air inlet (2) is equipped with a blower (21). An opening and closing motor (4) is fixedly connected to the outer wall of the equipment body (1) above the outdoor air inlet (2). A stop gate (3) is fixedly sleeved on the output shaft of the opening and closing motor (4).

4. An integrated evaporative-condensing heat exchanger according to claim 3, characterized in that: The outdoor air inlet (2) is provided in two sets, and the two sets of outdoor air inlets (2) are symmetrically distributed about the vertical center line of the equipment body (1).

5. An integrated evaporative-condensing heat exchanger according to claim 1, characterized in that: The negative pressure fan (13) includes a set of fan blades (14) installed on the top of the equipment body (1), and an exhaust port (16) is provided above the fan blades (14). A rain cover (15) is fixed to the outside of the exhaust port (16).

6. An integrated evaporative-condensing heat exchanger according to claim 1, characterized in that: The water baffle (12) has grooves (11) on both the left and right sides, and water baffles (10) are inserted into the grooves (11). The two sets of water baffles (10) abut and close to form a water baffle area.

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