Combined air cooler

Abstract

The invention discloses a combined air cooler which comprises a dry type heat exchange assembly, a wet type heat exchange assembly, a condensation assembly and fin heat exchange tubes, the fin heat exchange tubes are arranged in the dry type heat exchange assembly and further arranged in the wet type heat exchange assembly, the wet type heat exchange assembly is arranged on the side edge of the dry type heat exchange assembly side by side, and the condensation assembly is arranged on the side edge of the wet type heat exchange assembly. The condensation assembly is arranged on the wet type heat exchange assembly. The invention belongs to the technology of air coolers. External cold air is blown into a dry type heat exchange box through a first heat exchange fan of the dry type heat exchange assembly to cool a fin heat exchange pipe, dry type heat exchange is completed, hot water in a primary cold area enters a wet type heat exchange box of the wet type heat exchange assembly, water vapor is sprayed out through an atomization device, wet type heat exchange is conducted on the fin heat exchange pipe, and the heat exchange efficiency is improved. Meanwhile, the air flow containing a large amount of water vapor is cooled through the condensation assembly, and condensed water drops obtained after air cooling are collected to supply water to the atomization device.

Description

Technical Field

[0001] The invention belongs to the technical field of air coolers, and in particular relates to a combined air cooler. Background Art

[0002] Combined air cooler includes dry heat exchange tube bundle and wet heat exchange tube bundle, also known as dry-wet combined air cooler. The process medium to be cooled directly enters the heat exchange tube bundle of the combined air cooler. The dry heat exchange tube bundle always runs dry, and the wet heat exchange tube bundle runs wet by spraying water when the temperature is high.

[0003] Since the existing combined air cooler places the dry heat exchange tube bundle and the wet heat exchange tube bundle in the same container, the heat transfer efficiency is low. In order to cool the water in the tube to a certain temperature, it is necessary to further increase the fan power, resulting in increased energy consumption. If the water temperature inside the tube bundle is too high, it is easy to cause scaling on the surface of the tube bundle during water spray cooling, thereby reducing the heat transfer efficiency of the device. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a combined air cooler, which effectively solves the above problems.

[0005] The technical solution adopted by the present invention is as follows: The present invention proposes a combined air cooler, comprising a dry heat exchange component, a wet heat exchange component, a condensation component and a finned heat exchange tube, wherein the finned heat exchange tube is arranged in the dry heat exchange component, the finned heat exchange tube is also arranged in the wet heat exchange component, the wet heat exchange component is arranged in parallel on the side of the dry heat exchange component, and the condensation component is arranged on the wet heat exchange component; The dry heat exchange assembly includes a dry heat exchange box, a water-passing heat mixing pipe and a hot water inlet pipe. The linear array of finned heat exchange tubes is arranged inside the dry heat exchange box. The finned heat exchange tubes are also arranged on the top of the dry heat exchange box. The water-passing heat mixing pipe is arranged on the side wall of the dry heat exchange box. The water-passing heat mixing pipe is connected with the finned heat exchange tubes. The hot water inlet pipe is connected with the finned heat exchange tubes on the top. A water pump is provided on the hot water inlet pipe.

[0006] Furthermore, a lower air inlet is provided at the bottom of the dry heat exchange box, a filter is provided at the lower air inlet, an upper air outlet is provided at the top of the dry heat exchange box, and a heat exchange fan is provided at the upper air outlet.

[0007] Furthermore, the interior of the water-through heat mixing pipe is divided into a straight-through temperature conduction groove and a water-through groove. The side walls and the top of the water-through heat mixing pipe are also provided with fin heat exchange tube through holes. The fin heat exchange tube through holes on the side wall are grouped in two and penetrate the side wall of the same water-through groove. The fin heat exchange tube through holes on the top penetrate the top of the straight-through temperature conduction groove. The side wall of the bottom of the straight-through temperature conduction groove is provided with penetrating fin heat exchange tube through holes.

[0008] Furthermore, the wet heat exchange assembly includes a wet heat exchange box, an atomization device and a cold water outlet pipe, the linear array of fin heat exchange tubes is arranged inside the wet heat exchange box, the atomization device is arranged on the wet heat exchange box, the cold water outlet pipe is located on the side wall of the wet heat exchange box, and the cold water outlet pipe is connected to the fin heat exchange tubes at the bottom.

[0009] Furthermore, an upper air duct is provided at the top of the wet heat exchange box, an air collecting groove is provided at the bottom of the upper air duct, a lower air duct is provided below the air collecting groove, and a heat exchange fan 2 is provided at the upper air duct.

[0010] Furthermore, the atomization device is provided with an atomization pump, a through pipe and an atomization tube, wherein the linear array of the atomization tubes is arranged on the through pipe, the atomization pump is connected to the bottom of the through pipe, the atomization tube is arranged inside the wet heat exchange box, the atomization tube is located below the second heat exchange fan and above the fin heat exchange tube, and the atomization pump is located at the pipe pore of the fin heat exchange tube.

[0011] Furthermore, the condensation assembly includes a condensation chamber and a condensation pipe group, the condensation chamber is arranged between the upper air duct and the lower air duct, the condensation pipe group is arranged at the bottom of the atomizing pump, and the condensation pipe group is connected to the condensation chamber.

[0012] Furthermore, a compression tube is provided at the bottom center of the condensation chamber, a pressure reducing port is provided on the upper side of the compression tube, a pressure increasing port is provided on the lower side of the compression tube, a condensation plate is provided above the pressure reducing port, and a condensation water tank is provided around the compression tube at the bottom of the condensation chamber.

[0013] Furthermore, the condensation pipe group includes a condensation main pipe, a condensation side pipe and a water collecting tank, one end of the condensation main pipe is connected to the water collecting tank, the other end of the condensation main pipe is arranged at the bottom of the atomizing pump, one end of the condensation side pipe is connected to the water collecting tank, and the other end of the condensation side pipe is connected to the condensation water tank.

[0014] The beneficial effects achieved by the present invention using the above structure are as follows: 1. Separate the dry heat exchange and wet heat exchange in two independent boxes. First, the hot water is cooled to a certain temperature through the dry heat exchange component, and then the hot water is cooled through the wet heat exchange component to avoid the scaling heat affected zone of the fin heat exchange tube to prevent the fin heat exchange tube from scaling, which will reduce the efficiency of the wet heat exchange.

[0015] 2. The hot water first flows through the finned heat exchange tubes on the top of the dry heat exchanger. The hot air blown out from the upper air outlet is still lower than the water temperature of the finned heat exchange tubes on the top. The hot air blown out from the inside of the dry heat exchanger can be fully utilized to initially reduce the temperature of the hot water. After that, it enters the water-passing heat mixing pipe. The water in the direct temperature conduction tank exchanges heat with the water in the water tank again for a second cooling. Then, it enters the finned heat exchange tubes inside the dry heat exchanger for a third cooling, thereby improving the dry heat exchange efficiency of the device.

[0016] 3. In the wet heat exchange box, the atomizing pipe continuously blows out water vapor. The atomizing pump is located at the pipe pores of the fin heat exchange tube, so that the water vapor can be sprayed onto each layer of the fin heat exchange tube. Under the action of the airflow, the water vapor on the fin heat exchange tube will evaporate, taking away part of the heat of the fin heat exchange tube, completing the wet heat exchange of the device.

[0017] 4. When the hot air containing a large amount of water vapor enters the condensation chamber, the hot air enters from the boost port, is compressed by the compression tube, and then discharged from the pressure reducing port. At this time, the flow will lose most of the pressure, resulting in a decrease in pressure. The decrease in pressure leads to a decrease in temperature, thereby achieving gas cooling. At this time, the water vapor in the gas will condense into small water droplets due to the decrease in temperature, adhere to the condensation plate, and flow into the condensation water tank. The condensed water provides atomization water for the atomization device through the condensation tube group, forming an atomization water cycle for wet heat exchange. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional diagram of a combined air cooler proposed by the present invention; Figure 2 A top view of a combined air cooler proposed by the present invention; Figure 3 This is a right side view of a combined air cooler proposed by the present invention; Figure 4 for Figure 2 A cross-sectional view along the cutting line AA; Figure 5 for Figure 2 A cross-sectional view along the cutting line BB; Figure 6 for Figure 3 A cross-sectional view along the cutting line CC; Figure 7 A three-dimensional cross-sectional schematic diagram of a water-passing heat mixing pipe of a combined air cooler proposed by the present invention; Figure 8 The present invention provides a three-dimensional cross-sectional schematic diagram of a condensing chamber of a combined air cooler.

[0019] Among them, 1. dry heat exchange component, 11. dry heat exchange box, 111. lower air inlet, 112. upper air outlet, 12. water mixing heat pipe, 121. straight-through temperature conduction groove, 122. water groove, 123. fin heat exchange tube through hole, 13. hot water inlet pipe, 131. water pump, 14. heat exchange fan 1, 2. wet heat exchange component, 21. wet heat exchange box, 211. upper air duct, 212. air collection groove, 213. lower air duct, 22. Atomizing device, 221. Atomizing pump, 222. Through pipe, 223. Atomizing pipe, 23. Cold water outlet pipe, 24. Heat exchange fan 2, 3. Condensation assembly, 31. Condensation chamber, 311. Condensation plate, 312. Compression pipe, 313. Pressure reducing port, 314. Pressure increasing port, 315. Condensation water tank, 32. Condensation pipe group, 321. Condensation main pipe, 322. Condensation side pipe, 323. Water collecting tank, 4. Fin heat exchange tube.

[0020] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0023] like Figure 1-Figure 8 As shown, the present invention proposes a combined air cooler, comprising a dry heat exchange component 1, a wet heat exchange component 2, a condensing component 3 and a finned heat exchange tube 4, wherein the finned heat exchange tube 4 is arranged in the dry heat exchange component 1, and the finned heat exchange tube 4 is also arranged in the wet heat exchange component 2, the wet heat exchange component 2 is arranged in parallel on the side of the dry heat exchange component 1, and the condensing component 3 is arranged on the wet heat exchange component 2; The dry heat exchange assembly 1 includes a dry heat exchange box 11, a water-passing heat mixing pipe 12 and a hot water inlet pipe 13. The finned heat exchange tubes 4 are linearly arrayed inside the dry heat exchange box 11. The finned heat exchange tubes 4 are also arranged on the top of the dry heat exchange box 11. The water-passing heat mixing pipe 12 is arranged on the side wall of the dry heat exchange box 11. The water-passing heat mixing pipe 12 is connected to the finned heat exchange tubes 4. The hot water inlet pipe 13 is connected to the finned heat exchange tubes 4 at the top. A water pump 131 is provided on the hot water inlet pipe 13.

[0024] A lower air inlet 111 is provided at the bottom of the dry heat exchange box 11, and a filter is provided at the lower air inlet 111. An upper air outlet 112 is provided at the top of the dry heat exchange box 11, and a heat exchange fan 14 is provided at the upper air outlet 112.

[0025] The interior of the water-through heat mixing pipe 12 is divided into a straight-through temperature conduction groove 121 and a water-through groove 122. The side walls and the top of the water-through heat mixing pipe 12 are also provided with fin heat exchange tube through holes 123. The fin heat exchange tube through holes 123 on the side walls are arranged in groups of two and penetrate the side walls of the same water-through groove 122. The fin heat exchange tube through holes 123 on the top penetrate the top of the straight-through temperature conduction groove 121. The side wall of the bottom of the straight-through temperature conduction groove 121 is provided with penetrating fin heat exchange tube through holes 123.

[0026] The wet heat exchange assembly 2 includes a wet heat exchange box 21, an atomizing device 22 and a cold water outlet pipe 23. The linear array of finned heat exchange tubes 4 is arranged inside the wet heat exchange box 21. The atomizing device 22 is arranged on the wet heat exchange box 21. The cold water outlet pipe 23 is located on the side wall of the wet heat exchange box 21. The cold water outlet pipe 23 is connected to the finned heat exchange tubes 4 at the bottom.

[0027] An upper air duct 211 is provided at the top of the wet heat exchange box 21 , an air collecting slot 212 is provided at the bottom of the upper air duct 211 , a lower air duct 213 is provided below the air collecting slot 212 , and a heat exchange fan 24 is provided at the upper air duct 211 .

[0028] The atomizing device 22 is provided with an atomizing pump 221, a through pipe 222 and an atomizing tube 223. The atomizing tube 223 is linearly arrayed on the through pipe 222. The atomizing pump 221 is connected to the bottom of the through pipe 222. The atomizing tube 223 is arranged inside the wet heat exchange box 21. The atomizing tube 223 is located below the heat exchange fan 24 and above the fin heat exchange tube 4. The atomizing pump 221 is located at the pipe pore of the fin heat exchange tube 4.

[0029] The condensation assembly 3 includes a condensation chamber 31 and a condensation pipe group 32 . The condensation chamber 31 is arranged between the upper air duct 211 and the lower air duct 213 . The condensation pipe group 32 is arranged at the bottom of the atomization pump 221 . The condensation pipe group 32 is connected to the condensation chamber 31 .

[0030] A compression tube 312 is provided at the bottom center of the condensation chamber 31 , a pressure reducing port 313 is provided on the upper side of the compression tube 312 , a pressure increasing port 314 is provided on the lower side of the compression tube 312 , a condensation plate 311 is provided above the pressure reducing port 313 , and a condensation water tank 315 is provided around the compression tube 312 at the bottom of the condensation chamber 31 .

[0031] The condensation pipe group 32 includes a condensation main pipe 321, a condensation side pipe 322 and a water collecting tank 323. One end of the condensation main pipe 321 is connected to the water collecting tank 323, and the other end of the condensation main pipe 321 is arranged at the bottom of the atomizing pump 221. One end of the condensation side pipe 322 is connected to the water collecting tank 323, and the other end of the condensation side pipe 322 is connected to the condensation water tank 315.

[0032] During specific use, hot water enters from the hot water inlet pipe 13, and is transported to the finned heat exchange tube 4 at the top of the dry heat exchange box 11 through the water pump 131, flows through the finned heat exchange tube 4 at the top and enters the water-passing heat mixing tube 12, and the hot water enters the finned heat exchange tube 4 at the bottom layer inside the dry heat exchange box 11 from the straight-through temperature conduction groove 121 of the water-passing heat mixing tube 12, passes through the water-passing groove 122 of the water-passing heat mixing tube 12, flows through each layer of the finned heat exchange tube 4 inside the dry heat exchange box 11, and then flows from the finned heat exchange tube 4 at the top layer inside the dry heat exchange box 11 into the finned heat exchange tube 4 inside the wet heat exchange box 21.

[0033] The direction of air supply by the heat exchange fan 14 inside the dry heat exchange box 11 is from bottom to top, and the external air enters the device from the lower air inlet 111 at the bottom of the dry heat exchange box 11, and the cold air flows through the finned heat exchange tube 4 inside the dry heat exchange box 11 from bottom to top, lowering the water temperature inside the finned heat exchange tube 4, and then discharges the hot air from the upper air outlet 112. At this time, the hot air is still lower than the water temperature of the finned heat exchange tube 4 above the upper air outlet 112, thereby lowering the temperature of the finned heat exchange tube 4. That is, the hot water first exchanges heat through the finned heat exchange tube 4 at the top, and after lowering a certain temperature, enters the water-passing heat mixing tube 12, and the water in the direct-through temperature conduction groove 121 exchanges heat with the water in the water-passing groove 122 again, performs secondary cooling, and enters the finned heat exchange tube 4 inside the dry heat exchange box 11. The cold air exchanges heat with the finned heat exchange tube 4 through the dry heat exchange box 11, and is discharged from the top, thereby improving the dry heat exchange effect.

[0034] After the initially cooled water enters the wet heat exchange box 21, it flows from top to bottom through each layer of the fin heat exchange tube 4. During the process, the atomizing tube 223 continuously blows out water vapor, and the heat exchange fan 24 drives the air flow from top to bottom, driving the water vapor to flow through each layer of the fin heat exchange tube 4 for heat exchange, thereby reducing the water temperature inside the fin heat exchange tube 4, and finally the cold water flows out from the cold water outlet pipe 23.

[0035] During the wet heat exchange process, water vapor will evaporate through the fin heat exchange tube 4, taking away part of the heat of the fin heat exchange tube 4, and enter the downwind pipe 213 through the wind collecting groove 212. The downwind pipe 213 brings the hot air containing a large amount of water vapor to the condensation chamber 31. The hot air enters from the supercharging port 314, is compressed through the compression pipe 312, and is discharged from the decompression port 313. Under the pressure increase and decrease, the hot air is cooled, and the water vapor condenses into small water droplets, which are gathered on the condensation plate 311. The water droplets gradually condense and become larger, and flow along the surface of the condensation plate 311. The condensed water in the condensed water tank 315 flows into the water collecting tank 323 from the condensation side pipe 322. Under the action of the atomizing pump 221, the condensation water passes through the condensation main pipe 321 and enters the atomizing pump 221, and reaches each atomizing pipe 223 through the through pipe 222, forming a wet heat exchange water cycle. At the same time, the hot air is cooled. Driven by the heat exchange fan 24, the cold air is blown down from the upper air duct 211 on the top of the wet heat exchange box 21, forming a circulating airflow. The above is the overall working process of the present invention.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

[0038] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A combined air cooler, characterized in that: The invention comprises a dry heat exchange component (1), a wet heat exchange component (2), a condensing component (3) and a finned heat exchange tube (4), wherein the finned heat exchange tube (4) is arranged in the dry heat exchange component (1), the finned heat exchange tube (4) is also arranged in the wet heat exchange component (2), the wet heat exchange component (2) is arranged in parallel on the side of the dry heat exchange component (1), and the condensing component (3) is arranged on the wet heat exchange component (2); The dry heat exchange assembly (1) comprises a dry heat exchange box (11), a water-passing heat mixing pipe (12) and a hot water inlet pipe (13); the finned heat exchange pipes (4) are arranged in a linear array inside the dry heat exchange box (11); the finned heat exchange pipes (4) are also arranged on the top of the dry heat exchange box (11); the water-passing heat mixing pipes (12) are arranged on the side wall of the dry heat exchange box (11); the water-passing heat mixing pipes (12) are connected to the finned heat exchange pipes (4); the hot water inlet pipe (13) is connected to the finned heat exchange pipes (4) at the top; and a water pump (131) is provided on the hot water inlet pipe (13).

2. A combined air cooler according to claim 1, characterized in that: The dry heat exchange box (11) has a lower air inlet (111) at the bottom, and a filter screen is provided at the lower air inlet (111). The dry heat exchange box (11) has an upper air outlet (112) at the top, and a heat exchange fan (14) is provided at the upper air outlet (112).

3. A combined air cooler according to claim 2, characterized in that: The water-through heat-mixing pipe (12) is internally divided into a straight-through temperature-conducting groove (121) and a water-through groove (122); the side wall and the top of the water-through heat-mixing pipe (12) are also provided with fin heat-exchange pipe through holes (123); the fin heat-exchange pipe through holes (123) on the side wall are arranged in groups of two and penetrate the side wall of the same water-through groove (122); the fin heat-exchange pipe through holes (123) on the top penetrate the top of the straight-through temperature-conducting groove (121); and the side wall of the bottom of the straight-through temperature-conducting groove (121) is provided with penetrating fin heat-exchange pipe through holes (123).

4. A combined air cooler according to claim 3, characterized in that: The wet heat exchange assembly (2) comprises a wet heat exchange box (21), an atomizing device (22) and a cold water outlet pipe (23); the finned heat exchange tubes (4) are arranged in a linear array inside the wet heat exchange box (21); the atomizing device (22) is arranged on the wet heat exchange box (21); the cold water outlet pipe (23) is located on a side wall of the wet heat exchange box (21); and the cold water outlet pipe (23) is connected to the finned heat exchange tubes (4) at the bottom.

5. The combined air cooler according to claim 4, characterized in that: An upper air duct (211) is provided at the top of the wet heat exchange box (21), an air collecting groove (212) is provided at the bottom of the upper air duct (211), a lower air duct (213) is provided below the air collecting groove (212), and a heat exchange fan 2 (24) is provided at the upper air duct (211).

6. The combined air cooler according to claim 5, characterized in that: The atomizing device (22) is provided with an atomizing pump (221), a through pipe (222) and an atomizing pipe (223); the atomizing pipe (223) is arranged in a linear array on the through pipe (222); the atomizing pump (221) is connected to the bottom of the through pipe (222); the atomizing pipe (223) is arranged inside the wet heat exchange box (21); the atomizing pipe (223) is located below the second heat exchange fan (24) and above the fin heat exchange tube (4); the atomizing pump (221) is located at a pipe pore of the fin heat exchange tube (4).

7. The combined air cooler according to claim 6, characterized in that: The condensation assembly (3) comprises a condensation chamber (31) and a condensation pipe group (32); the condensation chamber (31) is arranged between an upper air duct (211) and a lower air duct (213); the condensation pipe group (32) is arranged at the bottom of an atomizing pump (221); and the condensation pipe group (32) is connected to the condensation chamber (31).

8. The combined air cooler according to claim 7, characterized in that: A compression tube (312) is provided at the center of the bottom of the condensation chamber (31), a pressure reducing port (313) is provided on the upper side of the compression tube (312), a pressure increasing port (314) is provided on the lower side of the compression tube (312), a condensation plate (311) is provided above the pressure reducing port (313), and a condensation water tank (315) is provided around the compression tube (312) at the bottom of the condensation chamber (31).

9. The combined air cooler according to claim 8, characterized in that: The condensation pipe group (32) comprises a condensation main pipe (321), a condensation side pipe (322) and a water collecting tank (323); one end of the condensation main pipe (321) is connected to the water collecting tank (323); the other end of the condensation main pipe (321) is arranged at the bottom of the atomizing pump (221); one end of the condensation side pipe (322) is connected to the water collecting tank (323); and the other end of the condensation side pipe (322) is connected to the condensation water tank (315).

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