Miniature dry-wet combined cooling tower

Abstract

The utility model relates to the technical field of cooling, in particular to a miniature dry-wet combined cooling tower, which comprises a tower body, a water circulation mechanism arranged on one side of the tower body and a fan mechanism mounted at the top end of the tower body, a water collecting tank and a cooler are arranged in the tower body, and the water collecting tank is arranged at the bottom end in the tower body. A first air inlet is formed in the periphery of the tower body above the water collecting tank, the cooler is mounted in the tower body above the first air inlet, a micro-channel heat exchanger is arranged in the tower body above the spraying mechanism and is arranged in the length direction of the spraying mechanism, one end of the micro-channel heat exchanger in the length direction extends out of the tower body, and the other end of the micro-channel heat exchanger extends out of the water collecting tank. The other end in the length direction of the micro-channel heat exchanger is communicated with the cooler through a third connecting assembly, and the other end of the cooler extends out of the tower body; according to the technical scheme, the micro-channel heat exchanger cooling device has the advantages that the cooling effect and the cooling efficiency are improved, and the input cost is reduced.

Description

Technical Field

[0001] The utility model relates to a cooling tower, in particular to a miniature dry-wet combined cooling tower. Background Art

[0002] With the rapid development of new energy, computing power and other industries, the heat dissipation demand of equipment continues to rise, and liquid cooling has replaced air cooling as the mainstream, which has become an irreversible trend. As the heat discharge unit of the entire system, the energy consumption and efficiency of the cold source are related to the development of the entire industry. With the rapid development of the industry, it is urgent to provide a liquid cooling cold source equipment with high heat flux density, high heat exchange efficiency, easy maintenance and meeting the dual carbon goals.

[0003] In the prior art, the heat exchanger in the cooling tower is usually a fin-tube heat exchanger. Since the pipes of the current fin-tube heat exchangers are almost all cylindrical and arranged in an S shape in the cooling tower, the pipe arrangement of the fin-tube heat exchanger is limited in the limited cooling tower space, and the number of times the medium to be cooled in the pipe is circulated and cooled in the cooling tower is limited, which leads to slow cooling efficiency of the medium to be cooled and poor cooling effect. Therefore, it is necessary to turn on the dry cooling module and the wet cooling module at the same time, that is, the cold air entering the cooling tower from the outside and the cooling water sprayed on the fin-tube heat exchanger are used to cool the medium to be cooled in the fin tubes at the same time. Although the cooling effect can be effectively guaranteed, more cost is required and the cooling efficiency is reduced.

[0004] Microchannel heat exchangers are widely used in the new cooling tower industry because of their compact structure and the ability to provide more heat exchange area under the same ventilation area. However, as the ambient temperature rises or the amount of the medium to be cooled increases, the microchannel heat exchanger will not be able to guarantee the cooling effect. Utility Model Content

[0005] In order to solve the problems in the related art, the present application provides a miniature dry-wet combined cooling tower, which solves the problems of slow cooling efficiency, poor cooling effect and reduced investment cost.

[0006] The technical solution is as follows:

[0007] A miniature dry-wet combined cooling tower comprises a tower body, a water circulation mechanism arranged on one side of the tower body and a fan mechanism installed at the top of the tower body, a water collecting pool and a cooler are arranged in the tower body, the water collecting pool is arranged at the bottom of the tower body, a first air inlet is arranged on the periphery of the tower body above the water collecting pool, the cooler is installed in the tower body above the first air inlet, a spray mechanism is arranged in the tower body above the cooler, the water circulation mechanism is connected with the water collecting pool and the cooler through a first connecting component and a second connecting component respectively, The water circulation mechanism is used to transport the water in the water collection tank to the spray mechanism, and is characterized in that a microchannel heat exchanger is arranged in the tower body above the spray mechanism, the microchannel heat exchanger is arranged along the length direction of the spray mechanism, one end along the length direction of the microchannel heat exchanger extends out of the tower body, and the other end along the length direction of the microchannel heat exchanger is connected to the cooler through a third connecting component, and the other end of the cooler extends out of the tower body; second air inlets are arranged on both sides of the tower body along the width direction of the microchannel heat exchanger.

[0008] Through the above technical solution, the cooling medium first enters the microchannel heat exchanger for air pre-cooling. When the ambient temperature is low, the cooling medium can be cooled by dry cooling with cold air entering the tower body through the first air inlet and the second air inlet. After the cooling is completed, it can be discharged directly through the cooler, thereby reducing the time consumed in the cooling process, thereby effectively improving the cooling efficiency and reducing the cost investment.

[0009] In addition, when the total amount of medium that needs to be cooled increases significantly or the external temperature of the tower body is too high, the spray mechanism can be turned on again. While turning on the cooling air for dry cooling, wet cooling by spraying cooling water is also carried out. The medium cooled by the microchannel heat exchanger enters the wet cooling section cooler below for evaporative cooling, thereby effectively ensuring the cooling effect.

[0010] Preferably, the microchannel heat exchanger includes two groups of symmetrically arranged microchannel heat exchange mechanisms, the two groups of microchannel heat exchange mechanisms are arranged in an inclined shape, and the gap between the two groups of microchannels increases from bottom to top; the two groups of microchannel heat exchange mechanisms each include a first collecting pipe and a second collecting pipe, the top and bottom of the first collecting pipe and the second collecting pipe are both arranged in a sealed shape, the first collecting pipe is arranged on the side elevation near the spray mechanism in the tower body, a matching partition is arranged at the lower end of the first collecting pipe, and the first collecting pipe above the partition is connected to the first water inlet pipe; the second collecting pipe is arranged on the side elevation away from the spray mechanism in the tower body, a plurality of horizontally arranged flat tubes are connected between the first collecting pipe and the second collecting pipe, and the flat tubes are evenly distributed along the height direction of the tower body, and a plurality of fins are arranged between adjacent flat tubes.

[0011] Through the above technical solution, by setting the flat tubes and fins, more flat tubes can be installed in a certain space in the tower body, so more fins are set, which can increase the contact area between the microchannel heat exchanger and the cold air, and then enable the medium to be cooled in the flat tube to complete the cooling work faster and more effectively, thereby achieving a better cooling effect and improving the cooling efficiency.

[0012] Preferably, the cooler includes a cooling pipe, which is arranged in a coil shape; the third connecting component includes a U-shaped tube arranged outside the tower body, both ends of the U-shaped tube extend into the tower body, and are respectively connected with the first collecting pipe and the cooling pipe, and the other end of the cooling tube extends out of the tower body.

[0013] Through the above technical solution, by connecting the cooling pipe with the first collecting pipe through the U-shaped pipe, when the amplitude or total amount of cooling required for the medium to be cooled becomes larger, and the cooling demand still cannot be met after heat exchange between the cooling air and the microchannel heat exchanger and the medium in the cooling pipe, cooling water can be sprayed on the cooling pipe by opening the spray mechanism, so that the cooling water and the medium in the cooling pipe can exchange heat, and then the medium to be cooled can be cooled again, thereby improving the cooling effect.

[0014] Preferably, the water circulation mechanism includes a support platform and a water pump installed on the top of the support platform; the first connecting component includes a second water inlet pipe, one end of the second water inlet pipe is connected to the water collecting tank, the other end of the second water inlet pipe extends out of the tower body and is connected to the water inlet of the water pump; the second connecting component includes a water outlet pipe, one end of the water outlet pipe is connected to the water outlet of the water pump, and the other end of the water outlet pipe extends into the tower body.

[0015] Preferably, the spray mechanism includes a spray main pipe, a plurality of water supply pipes and a spray head, the spray main pipe and the water outlet pipe are connected, the water supply pipes are evenly distributed along the length direction of the spray main pipe and are connected to the spray main pipe, the end of the water supply pipe away from the spray main pipe is sealed, and the spray heads are evenly distributed along the length direction of the water supply pipe and are connected to the water supply pipe.

[0016] Preferably, a water collector is provided in the tower body between the microchannel heat exchanger and the spray mechanism.

[0017] In summary, the beneficial effects of a micro dry-wet combined cooling tower are:

[0018] 1. The medium to be cooled first enters the microchannel heat exchanger for air pre-cooling. When the ambient temperature is low, the cold air entering the tower body through the first air inlet and the second air inlet can meet the cooling requirements of the medium to be cooled. After the cooling is completed, it can be discharged directly after the cooler, thereby reducing the time consumed in the cooling process, thereby effectively improving the cooling efficiency and reducing the cost investment; in addition, when the total amount of the medium to be cooled increases significantly or the external temperature of the tower body is too high, the spray mechanism can be turned on again. While turning on the cooling air for dry cooling, the cooling water spray brings wet cooling, so that the medium cooled by the microchannel heat exchanger enters the wet cooling section cooler below for evaporative cooling, thereby effectively ensuring the cooling effect;

[0019] 2. Through the arrangement of flat tubes and fins, more flat tubes can be installed in a certain space in the tower body, so more fins are arranged, which can increase the contact area between the microchannel heat exchanger and the cold air, and thus enable the medium to be cooled in the flat tube to complete the cooling work faster and more effectively, thereby achieving better cooling effect and improving cooling efficiency;

[0020] 3. By connecting the cooling pipe with the first collecting pipe through the U-shaped pipe, when the amplitude or total amount of cooling required for the medium to be cooled becomes larger, and the cooling demand cannot be met after heat exchange between the cooling air and the microchannel heat exchanger and the medium in the cooling pipe, cooling water can be sprayed on the cooling pipe by opening the spray mechanism, so that the cooling water and the medium in the cooling pipe can exchange heat, and then the medium to be cooled can be cooled again, thereby improving the cooling effect.

[0021] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0023] Figure 1 It is a structural schematic diagram of a micro dry-wet combined cooling tower;

[0024] Figure 2 It is a cross-sectional view of a micro dry-wet combined cooling tower;

[0025] Figure 3 It is a structural schematic diagram of a microchannel heat exchange structure in a micro dry-wet combined cooling tower;

[0026] Figure 4 for Figure 3 A partial enlarged view of the label A;

[0027] Figure 5It is a side view of a micro dry-wet combined cooling tower;

[0028] In the figure, 1. tower body; 2. water circulation mechanism; 201. support platform; 202. water pump; 3. fan mechanism; 4. water collecting tank; 5. cooler; 6. first air inlet; 7. spray mechanism; 701. spray main pipe; 702. water supply pipe; 703. spray head; 8. microchannel heat exchange mechanism; 801. first collecting pipe; 802. second collecting pipe; 9. partition; 10. first water inlet pipe; 11. flat tube; 12. fin; 13. U-shaped tube; 14. second water inlet pipe; 15. water outlet pipe; 16. water collector; 17. second air inlet. DETAILED DESCRIPTION

[0029] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the utility model. Instead, they are only examples of devices and methods consistent with some aspects of the utility model as detailed in the attached claims.

[0030] In a possible embodiment, as shown in the attached Figure 1-4 As shown, a micro dry-wet combined cooling tower comprises a tower body 1, a water circulation mechanism 2 arranged on one side of the tower body 1 and a fan mechanism 3 installed on the top of the tower body 1, a water collecting tank 4 and a cooler 5 are arranged in the tower body 1, the water collecting tank 4 is arranged at the bottom end of the tower body 1, a first air inlet 6 is arranged on the periphery of the tower body 1 above the water collecting tank 4, an air inlet grille is installed on the tower body 1 around the first air inlet 6, the cooler 5 is installed in the tower body 1 above the first air inlet 6, a spray mechanism 7 is arranged in the tower body 1 above the cooler 5, the water circulation mechanism 2 is connected with the water collecting tank 4 and the cooler 5 through the first connecting component and the second connecting component respectively, the water circulation mechanism 2 is used to transport the water in the water collecting tank 4 to the spray mechanism 7, and a microchannel heat exchanger is arranged in the tower body 1 above the spray mechanism 7.

[0031] The microchannel heat exchanger is arranged along the length direction of the spray mechanism 7, one end of the microchannel heat exchanger along the length direction extends out of the tower body 1, and the other end of the microchannel heat exchanger along the length direction is connected to the cooler 5 through the third connecting component, and the other end of the cooler 5 extends out of the tower body 1; the tower body 1 is provided with second air inlets 17 on both sides along the width direction of the microchannel heat exchanger;

[0032] A water collector 16 is provided in the tower body 1 between the microchannel heat exchanger and the spray mechanism 7. The water collector 16 includes a water collecting tray, which is a conventional technical means in the cooling tower. The specific structure and installation structure are common knowledge and will not be elaborated here.

[0033] After the cooling medium enters the tower body 1 from the microchannel heat exchanger, it is cooled by the cooling air entering the tower body 1 through the first air inlet 6. Since the microchannel heat exchanger has a strong heat dissipation capacity, the cooling demand can be met only by the microchannel heat exchanger, thereby effectively improving the cooling effect, and the cooling medium can be discharged only after passing through the microchannel heat exchanger. The entire cooling process takes less time, which can effectively improve the cooling efficiency and reduce the cost investment; when the total amount of the medium to be cooled increases significantly or the external temperature of the tower body 1 is too high, the spray mechanism 7 can be turned on again. While turning on the cooling air for dry cooling, wet cooling brought by the cooling water spray can also be carried out, thereby effectively improving the cooling effect.

[0034] The microchannel heat exchanger comprises two groups of symmetrically arranged microchannel heat exchange mechanisms 8, the two groups of microchannel heat exchange mechanisms 8 are arranged in an inclined shape, and the gap between the two groups of microchannels increases from bottom to top;

[0035] The two groups of microchannel heat exchange mechanisms 8 each include a first header 801 and a second header 802. The tops and bottoms of the first header 801 and the second header 802 are both sealed. The first header 801 is arranged on the side elevation near the spray mechanism 7 outside the tower body 1. A matching partition 9 is arranged at the lower end of the first header 801. The first header 801 above the partition 9 is connected to a first water inlet pipe 10. The second header 802 is arranged on the side elevation away from the spray mechanism 7 in the tower body 1. A plurality of horizontally arranged flat tubes 11 are connected between the first header 801 and the second header 802. The flat tubes 11 are evenly distributed along the height direction of the tower body 1. A plurality of fins 12 are arranged between adjacent flat tubes 11.

[0036] Due to the shape of the flat tubes 11, more numbers of them can be installed in a certain space in the tower body 1, so more fins 12 are provided, which can increase the contact area between the microchannel heat exchanger and the cold air, and thus enable the medium to be cooled in the flat tubes 11 to complete the cooling work faster and more effectively, thereby achieving a better cooling effect and improving the cooling efficiency; the specific structure of the microchannel heat exchanger and how to fix it in the tower body 1 are common knowledge and will not be elaborated here.

[0037] The cooler 5 includes a cooling pipe, which is arranged in a coil shape; the third connecting component includes a U-shaped tube 13 arranged outside the tower body 1, both ends of the U-shaped tube 13 extend into the tower body 1, and are respectively connected with the first collecting pipe 801 and the cooling pipe, and the other end of the cooling pipe extends out of the tower body 1; when the amplitude or total amount of cooling required for the medium to be cooled becomes larger, and the cooling demand cannot be met after heat exchange between the cooling air and the microchannel heat exchanger and the medium in the cooling pipe, cooling water can be sprayed on the cooling pipe by opening the spray mechanism 7, so that the cooling water and the medium in the cooling pipe can exchange heat, and then the medium to be cooled can be cooled again, thereby improving the cooling effect.

[0038] The water circulation mechanism 2 includes a support platform 201 and a water pump 202 installed on the top of the support platform 201; the first connecting component includes a second water inlet pipe 14, one end of the second water inlet pipe 14 is connected to the water collecting tank 4, the other end of the second water inlet pipe 14 extends out of the tower body 1 and is connected to the water inlet of the water pump 202; the second connecting component includes a water outlet pipe 15, one end of the water outlet pipe 15 is connected to the water outlet of the water pump 202, and the other end of the water outlet pipe 15 extends into the tower body 1;

[0039] The spray mechanism 7 includes a spray main pipe 701, multiple water supply pipes 702 and spray heads 703. The spray main pipe 701 and the water outlet pipe 15 are connected. The water supply pipes 702 are evenly distributed along the length direction of the spray main pipe 701 and are connected to the spray main pipe 701. The end of the water supply pipe 702 away from the spray main pipe 701 is sealed. The spray heads 703 are evenly distributed along the length direction of the water supply pipe 702 and are connected to the water supply pipe 702. The specific structure of the spray mechanism 7 and the specific method of installing it in the cooling tower are common knowledge and will not be elaborated here.

[0040] Operation principle: When the medium to be cooled needs to be cooled to a small extent and the air temperature outside the tower body 1 is low, cold air enters the tower body 1 from the first air inlet 6 and the second air inlet 17, and the medium to be cooled enters the first header 801 above the partition 9 from the first water inlet pipe 10, and the medium to be cooled will flow along the connected flat tube 11 to the second header 802 on the right side, and the medium entering the second header 802 will flow downward along the height direction of the tower body 1, and enter the first header 801 below the partition in the first header 801 again through the connected flat tube 11 located on one side below the partition 9. The cooling pipes are connected, so they flow along the cooling pipes. During this process, the cooling air with a lower temperature in the external environment enters the tower body 1 from the first air inlet 6. Due to the arrangement of the fan assembly at the top of the tower body 1, the cooling air moves upward and finally flows to the outside of the tower body 1. During the flow of the cooling air in the tower body 1, the cooling air exchanges heat with the flat tubes 11 and the medium in the cooling pipes. Because many fins 12 are arranged between adjacent flat tubes 11, the contact area between the cooling air and the flat tubes 11 can be increased, thereby better cooling the medium in the flat tubes 11, thereby achieving a better cooling effect. The cooled medium is discharged from the tower body 1 through the other end of the cooling pipe for use.

[0041] When the total amount of heat medium in the microchannel heat exchanger suddenly increases or the external ambient temperature is too high, the water pump 202 and the spray mechanism 7 are turned on. The water pump 202 draws out the cooling water in the water collection pool 4 and transports it to the spray main pipe 701 through the water supply pipe 702, and then flows evenly to each water supply pipe 702 to provide a water source for the spray head 703. The spray head 703 sprays cooling water on the cooling pipe to cool the medium by exchanging heat between the cooling water and the medium. At this time, the cooling wind cools the medium for dry cooling, and the cooling water sprays the medium for wet cooling, thereby effectively ensuring the cooling effect. The cooled medium is still discharged from the other end of the cooling pipe for use. The sprayed cooling water will fall into the water collection pool 4 after passing through the cooling pipe, thereby realizing the reuse of cooling water in the device.

[0042] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the present invention. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not present in the present invention. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present invention are indicated by the appended claims.

[0043] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A miniature dry-wet combined cooling tower, comprising a tower body, a water circulation mechanism arranged on one side of the tower body, and a fan mechanism installed on the top of the tower body, wherein a water collecting tank and a cooler are arranged in the tower body, the water collecting tank is arranged at the bottom of the tower body, a first air inlet is arranged on the periphery of the tower body above the water collecting tank, the cooler is installed in the tower body above the first air inlet, a spray mechanism is arranged in the tower body above the cooler, the water circulation mechanism is connected with the water collecting tank and the cooler through a first connecting component and a second connecting component respectively, the water circulation mechanism is used to transport water in the water collecting tank to the spray mechanism, and is characterized in that: A microchannel heat exchanger is arranged in the tower body above the spray mechanism. The microchannel heat exchanger is arranged along the length direction of the spray mechanism, one end of the microchannel heat exchanger along the length direction extends out of the tower body, and the other end along the length direction of the microchannel heat exchanger is connected with the cooler through a third connecting component, and the other end of the cooler extends out of the tower body; second air inlets are arranged on both sides of the tower body along the width direction of the microchannel heat exchanger.

2. A micro dry-wet combined cooling tower according to claim 1, characterized in that: The microchannel heat exchanger comprises two groups of symmetrically arranged microchannel heat exchange mechanisms, the two groups of microchannel heat exchange mechanisms are arranged in an inclined shape, and the gap between the two groups of microchannels increases from bottom to top; The two groups of microchannel heat exchange mechanisms each include a first header and a second header, the tops and bottoms of the first header and the second header are both sealed, the first header is disposed on the side elevation of the tower body close to the spray mechanism, a matching partition is disposed at the lower end of the first header, and the first header above the partition is connected to a first water inlet pipe; The second collecting pipe is arranged on the side elevation of the tower body away from the spray mechanism, a plurality of horizontally arranged flat tubes are connected between the first collecting pipe and the second collecting pipe, and the flat tubes are evenly distributed along the height direction of the tower body, and a plurality of fins are arranged between adjacent flat tubes.

3. A micro dry-wet combined cooling tower according to claim 2, characterized in that: The cooler comprises a cooling pipe, which is arranged in a coil shape; The third connecting assembly includes a U-shaped tube arranged outside the tower body, both ends of the U-shaped tube extend into the tower body and are respectively connected to the first collecting pipe and the cooling tube, and the other end of the cooling tube extends out of the tower body.

4. A micro dry-wet combined cooling tower according to claim 1, characterized in that: The water circulation mechanism includes a support platform and a water pump installed on the top of the support platform; The first connecting assembly includes a second water inlet pipe, one end of which is connected to the water collecting tank, and the other end of which extends out of the tower body and is connected to the water inlet of the water pump; The second connection assembly includes a water outlet pipe, one end of which is connected to the water outlet of the water pump, and the other end of which extends into the tower body.

5. A micro dry-wet combined cooling tower according to claim 4, characterized in that: The spray mechanism includes a spray main pipe, multiple water supply pipes and a spray head. The spray main pipe and the water outlet pipe are connected. The water supply pipes are evenly distributed along the length direction of the spray main pipe and are connected to the spray main pipe. One end of the water supply pipe away from the spray main pipe is sealed. The spray heads are evenly distributed along the length direction of the water supply pipe and are connected to the water supply pipe.

6. A micro dry-wet combined cooling tower according to claim 1, characterized in that: A water collector is arranged in the tower body between the microchannel heat exchanger and the spray mechanism.

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