High efficiency spray cooling tower

Abstract

The application discloses a high-efficiency spray cooling tower, which comprises a tower body, a water inlet pipe extending into the middle part of the tower body is connected to the bottom of the tower body, a plurality of primary atomizing nozzles are connected to the top of the water inlet pipe, a first power propeller for propelling the atomized airflow upward is arranged on the water inlet pipe, and a wind guide tube is arranged outside the first power propeller; a plurality of middle air vents are formed in the side of the tower body, air in the external environment can be introduced into the tower body and enter the bottom opening of the wind guide tube, a centrifugal fan mechanism is arranged above the wind guide tube, the centrifugal fan mechanism is used for diffusing and propelling the atomized airflow to the surrounding, a condensing tube is arranged around the centrifugal fan mechanism, a plurality of water-permeable holes penetrating through the inside and the outside of the condensing tube are arranged on the condensing tube, a water collecting ring groove is connected to the bottom plate of the condensing tube and is used for collecting the cooled water, and an air outlet is arranged at the top of the tower body and is used for discharging air. The application has the beneficial effect of improving the cooling effect and the cooling efficiency.

Description

Technical Field

[0001] The invention relates to a cooling tower, in particular to a high-efficiency spray cooling tower. Background Art

[0002] At present, the commonly used circulating water cooling towers at home and abroad mainly include natural ventilation cooling towers, mechanical ventilation cooling towers and traditional spray cooling towers. Among them, spray cooling towers usually use a group of atomizing nozzles to spray mist and cooperate with exhaust ventilation for cooling.

[0003] For example, the patent application with publication number CN208349916U discloses an atomizing cooling tower device, including a tower body, an atomizing module arranged in the tower body and an intelligent control system, the tower body is equipped with a water inlet pipe and a water outlet pipe; the atomizing module includes an atomizing device and an atomizing propulsion device; the atomizing device includes an atomizing nozzle and an atomizing water inlet pipe, one end of the atomizing water inlet pipe is connected to the atomizing nozzle, and the other end is connected to the water inlet pipe; the atomizing propulsion device is provided with a sensor element, a booster device and a fan blade, the booster device is connected to the atomizing water inlet pipe and boosts the pressure for the atomizing nozzle, the fan blade is provided at the lower end of the atomizing nozzle, and is driven by the reverse thrust generated by the spraying of the atomizing nozzle, so that the cold air enters the tower and exchanges heat with the atomized water droplets; an intelligent control system is also provided, which utilizes a control host PLC, an automatic control circuit and various sensor elements. The operating parameters of the cooling tower and the atomizing module obtained by each sensor element are transmitted to the control host PLC through the automatic control circuit and the cooling tower is controlled by the control host PLC. The cooling tower only cools the mist through heat exchange with cold air. The cooling method is relatively simple, resulting in poor cooling efficiency and effect. In addition, the condensation effect of water after cooling is also relatively general, which easily leads to water loss. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a high-efficiency spray cooling tower to improve the cooling effect and cooling efficiency.

[0005] The present invention is achieved through the following technical solutions.

[0006] A high-efficiency spray cooling tower comprises a tower body; a water inlet pipe extending into the middle of the tower body is connected to the bottom of the tower body; a plurality of preliminary atomizing nozzles are connected to the top of the water inlet pipe, and a first power propeller for propelling the atomized airflow upward and an air guide tube located outside the first power propeller are provided; a plurality of central vents are provided on the side of the tower body, which can introduce air from the external environment into the tower body and into the bottom opening of the air guide tube; a centrifugal fan mechanism is provided above the air guide tube for diffusing and propelling the atomized airflow to the surroundings, a condensing cylinder is arranged around the centrifugal fan mechanism, and a plurality of water-permeable holes are arranged on the condensing cylinder that pass through the inside and outside; the bottom plate of the condensing cylinder is connected to a water collecting ring groove for collecting cooled water; an air outlet is provided on the top of the tower body for discharging air.

[0007] As a further improvement of the present invention, the water collecting ring groove is connected to a plurality of return water pipes, the return water pipes extend vertically downward from the top to the lower part of the tower body and then extend horizontally, and the horizontally extending part of the return water pipes is connected to a plurality of secondary atomizing nozzles; a water collecting tray is provided in the tower body below the secondary atomizing nozzle, and the water collecting tray is connected to a water outlet pipe extending from the bottom of the tower body.

[0008] As a further improvement of the present invention, the outer sides of the return pipes are each provided with a corresponding central vent.

[0009] As a further improvement of the present invention, a condensation plate with an edge connected to the inner wall of the tower body is provided in the tower body, and the condensation plate is located below the middle vent and the air guide tube and above the secondary atomizing nozzle; a plurality of lower vents are opened on the side of the tower body below the condensation plate, and the condensation plate is provided with a through hole allowing the water inlet pipe to pass vertically, and a lower ventilation gap allowing air to pass through is provided between the hole wall of the through hole and the water inlet pipe, which is used to guide the air from the external environment into the bottom opening of the air guide tube via the lower vent.

[0010] As a further improvement of the present invention, a plurality of condensing fins are provided on the bottom surface of the condensing plate.

[0011] As a further improvement of the present invention, a condensation filter plate that allows air to pass through is provided below the air outlet, which is used to condense residual moisture in the air and retain it in the condensation filter plate; the condensation filter plate is supported on the top of the condensation cylinder.

[0012] As a further improvement of the present invention, the condensation water filter plate is arranged to be tilted downward from the middle to the edge.

[0013] As a further improvement of the present invention, the air outlet of the tower body is provided with an air outlet tube, and a second power propeller is provided in the air outlet tube for discharging air out of the tower body.

[0014] As a further improvement of the present invention, an upper ventilation port is provided at the portion of the tower body side located above the water collecting ring groove, and an upper ventilation gap is formed between the top of the tower body and the condensation water filter plate, which is used to introduce air from the external environment into the bottom opening of the air outlet duct through the upper ventilation port.

[0015] As a further improvement of the present invention, the diameter of the condensing cylinder gradually decreases from bottom to top.

[0016] Beneficial effects of the present invention:

[0017] The present invention forms mist through a preliminary atomizing nozzle, which is mixed with the external cold air for preliminary cooling. An upward-flowing atomizing airflow and an atomizing vortex that diffuses to the surroundings are formed through a first power propeller and a centrifugal fan mechanism. Condensation, i.e., secondary cooling, is carried out under the condensing action of the condensing cylinder. An atomizing airflow is formed again through a return pipe and a secondary atomizing nozzle, and condensed by a condensing plate, ultimately cooling the industrial hot water. The overall cooling effect is better and the cooling efficiency is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to help understand the objects and advantages of the present invention, wherein:

[0019] Figure 1 Schematic diagram of the internal structure of the high-efficiency spray cooling tower of this embodiment. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and implementation examples.

[0021] In this specification, directional terms such as up, down, left, right, front, back, front, back, top, and bottom, which are mentioned or may be mentioned, are defined relative to the configurations shown in the accompanying drawings. The terms "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively. These are relative concepts and may vary depending on the location and usage of the component. Therefore, these or other directional terms should not be construed as restrictive.

[0022] Reference Figure 1A high-efficiency spray cooling tower includes a tower body 1. The bottom of the tower body 1 is connected to a water inlet pipe 21 extending into the middle position of the tower body 1. The top of the water inlet pipe 21 is connected to a plurality of preliminary atomizing nozzles 2a. The plurality of preliminary atomizing nozzles 2a are arranged in a ring shape around the top of the water inlet pipe 21. The top of the water inlet pipe 21 is also provided with a first power propeller 31 and an air guide 41. The first power propeller 31 is mainly composed of a fan and a motor, and can push the atomizing airflow upward when started. The air guide 41 is vertically arranged and is located outside the first power propeller 31 to guide the atomizing airflow. The side of the tower body 1 is provided with a plurality of central vents 11, which are slightly lower than the bottom opening of the air guide tube 41. After the first power propeller 31 is started, the outside air can be introduced into the tower body 1. The air from the external environment of the central vent 11 is introduced into the tower body 1 and enters the bottom opening of the air guide tube 41. The plurality of central vents 11 are arranged at intervals along the annular direction so that the air entering from the outside is evenly distributed. A centrifugal fan mechanism 32 is provided above the air guide tube 41. The centrifugal fan mechanism 32 is used to diffuse and propel the atomized air flow to the surroundings. A condenser tube 42 is provided around the centrifugal fan mechanism 32. The condenser tube 42 is provided with a plurality of water-permeable holes 421 that pass through the inside and outside. The bottom plate of the condenser tube 42 is connected to a water collecting ring groove 51 for collecting cooled water. The top of the tower body 1 is provided with an air outlet 14 for exhausting air.

[0023] The high-efficiency spray cooling tower of this embodiment is used for cooling industrial hot water. The industrial hot water is input into the water inlet pipe 21 and transported to the top of the water inlet pipe 21 by the residual pressure, and is sprayed out by the preliminary atomizing nozzle 2a. The activation of the first power propeller 31 can allow the outside air to enter the tower body 1 through the middle vent 11 and be sucked in from the bottom opening of the air guide 41. The outside air cools the mist sprayed from the preliminary atomizing nozzle 2a and forms an atomizing airflow in the air guide 41. Under the propulsion of the first power propeller 31, it flows upward and enters the centrifugal fan mechanism 32. Utilizing the centrifugal propulsion of the centrifugal fan mechanism 32, the atomized airflow spreads outward to form a vortex and hits the inner wall of the condenser tube 42. The atomized airflow forms water droplets on the inner wall of the condenser tube 42 through condensation, passes through the water-permeable holes 421 and flows into the water collecting ring groove 51 from the outer wall of the condenser tube 42, thereby cooling the industrial hot water. The air that has been condensed and dehydrated is discharged from the tower body 1 through the air outlet 14 at the top of the tower body 1. In this embodiment, mist is formed by the preliminary atomizing nozzle 2a, and mixed with the cold air from the outside for preliminary cooling. The upward atomized airflow and the atomized vortex that spreads outward are formed by the first power propeller 31 and the centrifugal fan mechanism 32. Under the condensation action of the condenser tube 42, condensation is carried out, i.e., secondary cooling is carried out, thereby achieving an efficient cooling effect. In this embodiment, the atomizing vortex formed by the centrifugal fan mechanism 32 can enhance the condensation effect of the contact with the inner wall of the condenser tube 42, so that the secondary cooling effect is better, which makes a greater contribution to the cooling of industrial hot water.

[0024] In this embodiment, the water collecting annular groove 51 is connected to a plurality of return pipes 22, and the return pipes 22 are evenly arranged along the circumference of the water collecting annular groove 51. The return pipes 22 extend vertically downward from the top to the lower part of the tower body 1 and then extend horizontally. The laterally extending portion of the return pipe 22 is connected to a plurality of secondary atomizing nozzles 2b. The water in the water collecting annular groove 51 that has been cooled twice flows in the return pipe 22, converting potential energy into kinetic energy, and spraying out mist through the secondary atomizing nozzle 2b. A water collecting tray 52 is provided below the secondary atomizing nozzle 2b in the tower body 1. The water formed after the mist is cooled three times is collected by the water collecting tray 52. ​​The water collecting tray 52 is connected to a water outlet pipe 23 extending from the bottom of the tower body 1 to output the cooling water for industrial use. This embodiment utilizes the conversion of potential energy and kinetic energy so that the water in the water collecting annular groove 51 can be cooled for a third time, further improving the cooling effect and efficiency.

[0025] In this embodiment, the outer side of the return pipe 22 corresponds to a central vent 11. The air from the outside entering the tower body 1 through the central vent 11 can exchange heat with the return pipe 22, thereby reducing the water temperature in the return pipe 22 and enhancing the cooling effect.

[0026] In this embodiment, a condensation plate 43 with its edge connected to the inner wall of the tower body 1 is provided in the tower body 1. The condensation plate 43 is located below the central vent 11 and the air guide tube 41 and above the secondary atomizing nozzle 2b. The side of the tower body 1 below the condensation plate 43 is provided with a plurality of lower vents 12, and the condensation plate 43 is provided with a through hole allowing the water inlet pipe 21 to pass vertically, and a lower ventilation gap s1 is provided between the hole wall of the through hole and the water inlet pipe 21 to allow air to pass through. Under the action of the first power propeller 31, the outside air enters the tower body 1 through the lower vent 12 and is mixed with the mist ejected by the secondary atomizing nozzle 2b to form an atomized airflow again. The lower vents 12 are arranged along the annular intervals, so that the air entering the tower body 1 is more evenly distributed, and the atomized airflow contacts the condensation plate 43, and its moisture is condensed. The condensed water on the condensation plate 43 drips onto the water collecting tray 52 and is collected, and the air flows upward from the lower ventilation gap s1 and enters the air guide 41 to supplement the cooled air to further improve the cooling effect in the air guide 41.

[0027] In order to further enhance the condensation effect of the condensation plate 43 , in this embodiment, a plurality of condensation fins 431 are provided on the bottom surface of the condensation plate 43 . The condensation fins 431 are evenly distributed so that the condensation effect of the condensation plate 43 is more balanced.

[0028] In this embodiment, a condensation filter plate 44 is provided below the air outlet 14. The condensation filter plate 44 is a plate structure woven from a wire mesh having a certain thickness. The pores of the condensation filter plate 44 allow air to pass through and be discharged out of the tower body 1 through the air outlet 14. The condensation filter plate 44 can also condense and trap residual moisture in the air in the condensation filter plate 44. The condensation filter plate 44 is supported on the top of the condensation cylinder 42. The moisture trapped in the condensation filter plate 44 can drip from its edge and flow along the outer wall of the condensation cylinder 42 into the water collection ring groove 51. The condensation filter plate 44 can prevent water loss and further enhance the cooling effect.

[0029] In this embodiment, the condensation filter plate 44 is arranged to be tilted downward from the middle to its edge. More specifically, the condensation filter plate 44 can be arranged to be a dome-shaped structure with a raised middle portion, thereby increasing the speed at which the water retained in the condensation filter plate 44 flows and diffuses toward its edge, thereby improving the efficiency of collecting water.

[0030] In this embodiment, the air outlet 14 of the tower body 1 is provided with an air outlet tube 45, and a second power propeller 33 is provided in the air outlet tube 45 for discharging air out of the tower body 1. The structure of the second power propeller 33 is similar to that of the first power propeller 31. Under the power propulsion of the second power propeller 33, the atomizing vortex in the condensing tube 42 can spiral upward, thereby improving the utilization rate of the inner wall of the condensing tube 42 and increasing the area of ​​the inner wall of the condensing tube 42 for condensing the atomizing vortex. On the one hand, it can improve the overall condensation effect. On the other hand, it can also prevent the condensed water from being too concentrated in the lower part of the inner wall of the condensing tube 42, resulting in a decrease in the flow efficiency of the water-permeable holes 421 in this area.

[0031] On the basis of setting up the second power propeller 33, in this embodiment, an upper vent 13 is opened at the side of the tower body 1 above the water collecting ring groove 51. The upper vent 13 is arranged along a ring interval, and an upper ventilation gap s2 is formed between the top of the tower body 1 and the condensation water filter plate 44. Under the action of the second power propeller 33, the outside air enters the tower body 1 through the upper vent 13, cools the water on the outer wall of the condensation cylinder 42, and then enters the bottom opening of the air outlet cylinder 45 through the upper ventilation gap s2 and is discharged outside the tower body 1, further enhancing the cooling effect and cooling efficiency.

[0032] In addition, in this embodiment, the diameter of the condensation tube 42 gradually decreases from bottom to top, and the water content of the atomized airflow gradually decreases with the spiral upward flow. Gradually reducing the diameter of the condensation tube 42 will not have an adverse effect on condensation. Moreover, the gradual reduction of the diameter can increase the upward flow speed of the spiral airflow and improve the overall flow efficiency.

[0033] Finally, it should be noted that the above implementation cases are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above implementation cases, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above implementation cases, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the implementation cases of the present invention.

Claims

1. A high efficiency spray cooling tower, characterized in that, The tower body comprises a tower body; the bottom of the tower body is connected to a water inlet pipe extending into the middle of the tower body; the top of the water inlet pipe is connected to a plurality of preliminary atomizing nozzles, and is provided with a first power propeller for pushing the atomizing airflow upward, and an air guide tube located outside the first power propeller; the side of the tower body is provided with a plurality of central vents, which can introduce air from the external environment into the tower body and enter the bottom opening of the air guide tube; a centrifugal fan mechanism is provided above the air guide tube for diffusing and promoting the atomizing airflow to the surroundings, and a condensing tube is arranged around the centrifugal fan mechanism, and a plurality of condensing tubes are arranged on the condensing tube. a water-permeable hole that runs through the inside and outside; the bottom plate of the condensing cylinder is connected to a water collecting ring groove for collecting cooled water; the top of the tower body is provided with an air outlet for discharging air; a condensing water filter plate that allows air to pass through is provided below the air outlet, and the condensing water filter plate is woven from a wire mesh into a plate structure with a certain thickness, which is used to condense residual moisture in the air and retain it in the condensing water filter plate; the condensing water filter plate is supported on the top of the condensing cylinder; the air outlet of the tower body is provided with an air outlet tube, and a second power propeller is provided in the air outlet tube for discharging air out of the tower body.

2. The high-efficiency spray cooling tower according to claim 1, characterized in that: The water collecting ring groove is connected to multiple return water pipes, which extend vertically from the top to the lower part of the tower body and then extend horizontally. The horizontally extended part of the return water pipe is connected to multiple secondary atomizing nozzles; a water collecting tray is provided in the tower body below the secondary atomizing nozzle, and the water collecting tray is connected to a water outlet pipe extending from the bottom of the tower body.

3. The high-efficiency spray cooling tower according to claim 2, characterized in that: The outer sides of the return pipes are each correspondingly provided with a central vent.

4. The high-efficiency spray cooling tower according to claim 2, characterized in that: The tower body is provided with a condensation plate whose edge is connected to the inner wall of the tower body. The condensation plate is located below the middle vent and the air guide tube and above the secondary atomizing nozzle; the side of the tower body located below the condensation plate is provided with a plurality of lower vents, and the condensation plate is provided with a through hole allowing the water inlet pipe to pass vertically. A lower ventilation gap allowing air to pass through is provided between the hole wall of the through hole and the water inlet pipe, which is used to guide the air from the external environment into the bottom opening of the air guide tube through the lower vent.

5. The high-efficiency spray cooling tower according to claim 4, characterized in that: A plurality of condensing fins are provided on the bottom surface of the condensing plate.

6. The high-efficiency spray cooling tower according to claim 1, characterized in that: The condensation water filter plate is arranged to be tilted downward from the middle to the edge.

7. The high-efficiency spray cooling tower according to claim 1, characterized in that: An upper ventilation port is provided on the side of the tower body above the water collecting ring groove, and an upper ventilation gap is formed between the top of the tower body and the condensation water filter plate for introducing air from the external environment into the bottom opening of the air outlet duct through the upper ventilation port.

8. The high-efficiency spray cooling tower according to claim 1, characterized in that: The diameter of the condensing cylinder gradually decreases from bottom to top.

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