A high-efficiency heat exchange dry cooler

Abstract

This utility model relates to the field of refrigeration equipment technology, and more specifically, to a high-efficiency heat exchange dry cooler. The purpose of this utility model is to provide a dry cooler that combines a compact structure with high-efficiency heat dissipation performance. The dry cooler includes a support frame and at least one set of dry cooler modules. Multiple horizontal support members connected to the support frame are provided in the middle of the inner side of the support frame, dividing the area into an upper mounting area and a lower mounting area. The dry cooler modules are located in the upper mounting area. Each dry cooler module includes a row of fan units and two coil assemblies. The fan units are located at the top of the upper mounting area and include multiple fans arranged sequentially along the length of the support frame. Each fan has an upward-facing air outlet and a downward-facing air inlet. The coil assemblies are located below the air inlets, and the two coil assemblies and the air inlets form an inverted triangular layout. The upper mounting area has a side air inlet, and the lower mounting area has a lower air inlet. Both the side air inlets and the lower air inlets are connected to the air inlets.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration equipment, and more specifically, to a high-efficiency heat exchange dry cooler. Background Technology

[0002] Currently, green and sustainable energy is receiving increasing attention. With the growing market demand for energy-efficient data centers, low-energy air conditioning cooling systems, and natural cooling systems, dry coolers, as heat exchange devices that consume less water and effectively reduce mechanical refrigeration energy consumption while improving unit energy efficiency, are widely used in power, chemical, and refrigeration industries. A dry cooler consists of coil assemblies, an inlet manifold, and an outlet manifold, using air as the cooling medium to cool the heat exchange fluid within the tubes.

[0003] The volume of the unit coil is strongly positively correlated with the heat exchange performance. In order to ensure heat exchange performance, dry coolers usually occupy a large area. Therefore, exploring a higher heat dissipation limit in a limited space is the main technical challenge of dry cooler equipment. Utility Model Content

[0004] The present invention aims to overcome at least one of the defects of the prior art and provide a high-efficiency heat exchange dry cooler that combines a compact structure with high heat dissipation performance.

[0005] This utility model proposes a high-efficiency heat exchange dry cooler, including a support frame and at least one set of dry cooler modules. The inner side of the support frame is hollow to form an installation space. The middle of the installation space is provided with multiple horizontal support members connected to the support frame. The installation space is divided into an upper installation area and a lower installation area by the horizontal support members. The dry cooler module is located in the upper installation area. The dry cooler module includes a fan unit and two coil assemblies. The fan unit is supported on the top of the upper mounting area by the support frame. The fan unit includes multiple fans arranged sequentially along the length of the support frame. Each fan has an upward-facing air outlet and a downward-facing air inlet. The coil assembly is supported below the air inlet by the horizontal support member. The two coil assemblies and the air inlet form an inverted triangular layout. The upper mounting area has side air inlets on its two end faces along its length, and the lower mounting area has a lower air inlet located opposite to the air inlets.

[0006] In this design, the air input through the side air inlet and the bottom air inlet both pass through the coil assembly before being discharged from the fan outlet. The two streams of air exchange heat with the coil assembly together. Furthermore, the inverted triangular layout of the fan unit and the two coil assemblies increases the frontal area of ​​the coil assembly facing the lower installation area, allowing for sufficient heat exchange with the air introduced through the bottom air inlet. In this way, the heat dissipation requirements of the two coil assemblies can be met by a single fan unit, improving the overall heat exchange capacity of the dry cooler and reducing the overall vertical space occupied by the dry cooler, thus promoting a compact overall structure.

[0007] In some embodiments, a precooling module is also included, which is supported in the lower mounting area by the support frame, and precools the air entering the lower mounting area through the lower air inlet.

[0008] In some embodiments, the precooling module includes a wet film, a water receiving tray, and a water supply pump. The wet film is located near the lower air inlet, and the water receiving tray is supported below the wet film by the support frame. The water receiving tray, the water supply pump, and the wet film are connected in sequence through pipelines.

[0009] In some embodiments, a first pressure sensor is provided at the pump inlet of the water supply pump.

[0010] In some embodiments, a second pressure sensor is provided at the pump outlet of the water supply pump.

[0011] In some embodiments, a replenishment pipeline located in the lower installation area is also included, the replenishment pipeline being connected to the water receiving tray.

[0012] In some embodiments, a drain pipe located in the lower installation area is also included, and the drain pipe is connected to the water receiving tray.

[0013] In some embodiments, the precooling module is further provided with a water spraying assembly for spraying cooling water onto the wet film.

[0014] In some embodiments, at least two wet membranes are provided, which are respectively located on both sides of the lower air inlet and are inclined relative to the lower air inlet, so that the lower air inlet and the two wet membranes form an inverted triangular layout.

[0015] This solution increases the contact area between the wet film and the lower air inlet, allowing for sufficient heat exchange and thus improving the cooling capacity of the coil assembly.

[0016] In some embodiments, the wet film is horizontally positioned close to the lower air inlet.

[0017] This solution can significantly reduce the space occupied by the wet film in the vertical direction, which helps to promote a compact layout of the whole unit. In addition, the close proximity of the wet film to the lower air inlet can reduce the entry of uncooled air into the lower mounting area, so as to ensure the cooling capacity of the coil assembly.

[0018] In some embodiments, the coil assembly has a return end and a supply end, with the return end located near the air inlet and the supply end located near the horizontal support.

[0019] In this design, the temperature of the cooling water inside the coil assembly gradually decreases from top to bottom. The outside air entering from the bottom air inlet passes through the coil assembly from bottom to top for heat exchange. The heat exchange coil and the air medium have a higher degree of counterflow, which can improve the heat dissipation capacity of the dry cooler.

[0020] In some embodiments, a control device and an ambient temperature sensor are also included on the support frame; The fan is a variable frequency fan; The return end of the coil assembly is equipped with a return water temperature sensor, and the supply end of the coil assembly is equipped with a supply water temperature sensor. The ambient temperature sensor, the return water temperature sensor, the supply water temperature sensor, and the fan are all electrically connected to the control device.

[0021] The control device in this solution can acquire the ambient temperature and the supply and return water temperatures, and then adjust the operating frequency of the fan to keep the dry cooler in optimal working condition.

[0022] In some embodiments, a spray assembly located in the upper mounting area is also included, the spray assembly spraying coolant toward the coil assembly.

[0023] This solution can improve the cooling rate of the coil assembly and enhance the overall heat dissipation performance.

[0024] In some embodiments, the dry cooler module is provided in two sets, and the two sets of dry cooler modules are arranged side by side in the upper mounting area along the width direction of the support frame.

[0025] In some embodiments, adjacent fans are separated by a partition located in the upper mounting area.

[0026] This solution can reduce mutual interference between adjacent fans. Thus, by changing the number of fans in operation, the heat dissipation level of the dry cooler can be adjusted relatively precisely.

[0027] Compared with the prior art, the beneficial effects of this utility model are as follows: by opening side air inlets and bottom air inlets, outside air can enter from the bottom and sides of the coil assembly, increasing the air intake volume. Furthermore, the inverted triangular layout of the fan unit and the two coil assemblies increases the downward airflow area of ​​the coil assembly and improves the heat exchange efficiency with the bottom air inlet. In this way, the heat dissipation requirements of the two coil assemblies can be met by one fan unit, making the dry cooler have both a compact structure and high-efficiency heat dissipation performance. By setting the liquid return end and liquid supply end of the coil assembly vertically, the coil assembly and the bottom air inlet are almost completely counter-current, improving the heat dissipation performance of the dry cooler. Attached Figure Description

[0028] Figure 1 The structure of some embodiments of this utility model Figure 1 .

[0029] Figure 2 The structure of some embodiments of this utility model Figure 2 .

[0030] Figure 3 This is a structural diagram of some other embodiments of the present invention.

[0031] Reference numerals: Support frame 100, horizontal support 110, upper mounting area 120, side air inlet 130, protective housing 140, lower mounting area 150, lower air inlet 160, fan 200, air outlet 210, air inlet 220, coil assembly 300, coil 310, return water inlet 311, water supply inlet 312, automatic air vent valve 313, drain outlet 314, main liquid supply pipe 320, main liquid return pipe 330, wet film 410, water receiving tray 420, water supply pump 430, replenishment pipe 500, drain pipe 600, spray assembly 700, control device 800. Detailed Implementation

[0032] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this invention. To better illustrate the following embodiments, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0033] Furthermore, in this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0035] Example 1 like Figure 1 , 2 As shown, this embodiment provides a high-efficiency heat exchange dry cooler, including a support frame 100 and at least one set of dry cooler modules. Specifically, to improve the overall heat dissipation performance, two sets of dry cooler modules are provided, and the two sets of dry cooler modules are arranged side by side along the width direction of the support frame 100 in the upper mounting area 120. The inner side of the support frame 100 is hollow to form an installation space. Multiple horizontal support members 110 connected to the support frame 100 are provided in the middle of the installation space. The installation space is divided into an upper installation area 120 and a lower installation area 150 by the horizontal support members 110. The dry cooler module is located in the upper installation area 120. Each dry cooler module includes a fan unit and two coil assemblies 300. The fan unit is supported on the top of the upper installation area 120 by a support frame 100. The fan unit includes multiple fans 200 arranged sequentially along the length of the support frame 100. Each fan 200 has an upward-facing air outlet 210 and a downward-facing air inlet 220. The coil assembly 300 is supported below the air inlet 220 by a horizontal support member 110. The two coil assemblies 300 are inclined relative to the air inlet 200. Specifically, the two coil assemblies 300 and the air inlet 220 form an inverted triangular layout. The upper mounting area 120 has side air inlets 130 on its two end faces along its length, and the lower mounting area 150 has a lower air inlet 160 that is opposite to the air inlet 220.

[0036] For ease of understanding, the left-right direction of the dry cooler is defined by the length extension direction of the support frame 100, and the front-back direction of the dry cooler is defined by the width extension direction of the support frame 100. For specific implementation, refer to... Figure 3 In order to protect the coil assembly 300, protective housings 140 are provided on the front and rear sides of the upper mounting area 120, and side air inlets 130 are opened on the left and right sides of the upper mounting area 120. The inner area of ​​the inverted triangle formed by the two coil assemblies 300 and the air inlet 220 is connected to the side air inlet 130.

[0037] In practice, the horizontal support members 110 are spaced apart along the length of the support frame 100, so that the space between the horizontal support members 110 can serve as an airflow channel between the upper installation area 120 and the lower installation area 150. Preferably, the spacing between two adjacent horizontal support members 110 corresponds one-to-one with the air inlet 220 of the fan 200, so that the air input from the lower air inlet 160 can smoothly pass through the coil assembly 300 and be discharged from the air outlet 210 of the fan 200.

[0038] In use, the air input through the side air inlet 130 and the lower air inlet 160 can both come into contact with the coil assembly 300 before being discharged from the air outlet 210 of the fan 200. The two streams of air exchange heat with the coil assembly 300 together. By adopting an inverted triangular layout for one row of fan units and two coil assemblies 300, the windward area of ​​the coil assembly 300 facing the lower installation area 150 can be increased, thereby promoting sufficient heat exchange between the coil assembly 300 and the air introduced through the lower air inlet 160. In this way, the heat dissipation requirements of two coil assemblies 300 can be met by one row of fan units, improving the overall heat exchange capacity of the dry cooler and reducing the overall vertical space occupied by the dry cooler, thus promoting a compact overall structure. It should be noted that the coil assembly 300 is typically composed of fins and copper tubes. Adjacent fins and adjacent copper tube vertical sections are spaced apart. Therefore, multiple interconnected channels are formed between two opposite surfaces in the thickness direction of the coil assembly 300 through the spaced intervals. Consequently, the airflow entering from the lower air inlet 160 can smoothly pass through the thickness direction of the coil assembly 300 and fully contact the fins for heat exchange, and then flow out sequentially through the air inlet 220 and air outlet 210 of the fan 200.

[0039] In a preferred embodiment, refer to Figure 3 Multiple lower air inlets 160 can be provided corresponding to the air inlets 220 of the fan 200. Thus, each lower air inlet 160 and the corresponding fan 200 form a relatively stable airflow channel, which improves the heat exchange capacity with the coil assembly 300. On the other hand, by controlling the number of fans 200 that are turned on, the heat dissipation level of the coil assembly 300 can be adjusted relatively precisely, making the operation simple and convenient.

[0040] refer to Figure 1 , 2 It also includes a pre-cooling module, which is supported by a support frame 100 and installed in the lower installation area 150. The pre-cooling module pre-cools the air entering the lower installation area 150 through the lower air inlet 160. In specific implementation, the pre-cooling module includes a wet film 410, a water receiving tray 420, and a water supply pump 430. The wet film 410 is located near the lower air inlet 160, and the water receiving tray 420 is supported by the support frame 100 and installed below the wet film 410. The water receiving tray 420, the water supply pump 430, and the wet film 410 are connected in sequence through pipelines.

[0041] Continue to refer to Figure 1 , 2 In practice, the number of lower air inlets 160 corresponds to the number of fans 200. Each lower air inlet 160 is equipped with a wet film 410. In the lower air inlet passage, each fan 200 drives outside air into the lower installation area 150 through the corresponding lower air inlet 160, and then into the upper installation area 120 through the intervals of the horizontal support members 110. The air fully contacts the two inclined coil assemblies 300 for heat exchange, and then rises sequentially through the air inlet 220 and the air outlet 210 to be sent out of the dry cooler. In this way, each fan 200 and the corresponding lower air inlet 160 form a relatively independent airflow channel within the installation space, which facilitates the adjustment of the cooling capacity of the dry cooler by the number of fans 200 turned on.

[0042] In some embodiments, the precooling module is further provided with a water spraying assembly for spraying cooling water onto the wet film 410. Specifically, the water spraying assembly is connected to the water receiving tray 420 via a pipeline, and a first switching valve is provided on the pipeline.

[0043] refer to Figure 1 , 2 In some embodiments, at least two wet membranes 410 are provided, with the two wet membranes 410 located on both sides of the lower air inlet 160 and inclined relative to the lower air inlet 160, so that the lower air inlet 160 and the two wet membranes 410 form an inverted triangular layout. In this way, the contact area between the wet membrane 410 and the lower air inlet is significantly increased, and the air can be fully pre-cooled, thereby improving the cooling capacity of the coil assembly 300.

[0044] refer to Figure 3 In other embodiments, the wet film 410 is horizontally positioned close to the lower air inlet 160. This design significantly reduces the vertical space occupied by the wet film 410, contributing to a compact overall layout. Furthermore, the proximity of the wet film 410 to the lower air inlet 160 reduces the entry of uncooled air into the lower mounting area 150, ensuring adequate cooling for the coil assembly 300.

[0045] In some embodiments, the water supply pump 430 is equipped with a first pressure sensor at its inlet and a second pressure sensor at its outlet. The pressure difference between the first and second pressure sensors provides a reference for the opening degree of the water supply pump 430, so that the cooling state of the dry cooler meets the actual operating requirements.

[0046] refer to Figure 1 , 2 It also includes a replenishment pipe 500 and a drain pipe 600 located in the lower installation area 150, both of which are connected to the water receiving tray 420.

[0047] refer to Figure 1 , 2 The coil assembly 300 has a return end and a supply end. The return end is located near the air inlet 220, and the supply end is located near the horizontal support 110. Thus, the temperature of the cooling water inside the coil assembly 300 generally decreases gradually from top to bottom. Air entering from the lower air inlet 160 passes through the coil assembly 300 from bottom to top for heat exchange. The heat exchange coil 310 has a higher degree of counter-current flow with the air medium, which can improve the heat dissipation capacity of the dry cooler. (Continue to refer to...) Figure 2 In specific implementation, the coil assembly 300 includes multiple coils 310, a main supply pipe 320, and a main return pipe 330. The main supply pipe 320 delivers the cooling water, cooled by the coils 310, to the end. The cooling water exchanges heat with the heating element and is heated. The heated cooling water is then returned to the coils 310 through the main return pipe 330. Each coil 310 is equipped with a return port 311 and a supply port 312. The return ports 311 of each coil 310 are connected to the main return pipe 330, and the supply ports 312 of each coil 310 are connected to the main supply pipe 320. In addition, the coil 310 is also equipped with an automatic air vent 313 and a drain outlet 314. The automatic air vent 313 can ensure normal pressure inside the coil 310 by venting gas. The drain outlet 314 can be used to drain the cooling water inside the coil 310 during maintenance or shutdown. Preferably, the drain outlet 314 of the coil 310 is connected to the water receiving pan 420 through a pipeline, or the drain outlet 314 is located above the water receiving pan 420, and the drain outlet 314 directly drains the cooling water to the water receiving pan 420.

[0048] In some embodiments, a control device 800 and an ambient temperature sensor are also included on the support frame 100; Fan 200 uses a variable frequency fan; The return end of the coil assembly 300 is equipped with a return water temperature sensor, and the supply end of the coil assembly 300 is equipped with a supply water temperature sensor. The ambient temperature sensor, return water temperature sensor, supply water temperature sensor, and fan 200 are all electrically connected to the control device 800.

[0049] During operation, the control device 800 can obtain the ambient temperature through the ambient temperature sensor, and the supply and return water temperatures through the return water temperature sensor and the supply water temperature sensor. Then, the operator can adjust the operating frequency of the fan 200 through the control device 800 to keep the dry cooler in optimal working condition.

[0050] refer to Figure 2It also includes a spray assembly 700 located in the upper mounting area 120, which sprays coolant towards the coil assembly 300. In a specific implementation, the spray assembly 700 is connected to a drip tray via a pipeline, and a second switching valve is installed on the pipeline. The drip tray 420 is also configured to collect the coolant sprayed by the spray assembly 700. By installing the spray assembly 700, the cooling rate of the coil assembly 300 can be increased, improving the overall heat dissipation performance.

[0051] In some embodiments, adjacent fans 200 are separated by a partition provided in the upper mounting area 120. The partition can reduce airflow interference between adjacent fans 200, so that the heat dissipation level of the dry cooler can be adjusted relatively precisely by controlling the number of fans 200 that are turned on.

[0052] Furthermore, in this embodiment, during processing, the coil assembly 300, fan 200, and spray assembly 700 form a dry cooler module. The precooling module, the support frame 100 including the horizontal support component 110, and the heat exchange tube module are processed, manufactured, and installed separately. This allows for the simultaneous processing and production of components on separate processing lines, avoiding the need for dry cooler equipment to be produced as a whole, which would otherwise result in low installation efficiency due to multiple groups of production personnel from different specialties working together or extending equipment production time. This improves the production efficiency of the dry cooler.

[0053] To further achieve modular installation, refer to... Figure 1 , 2 Each set of dry cooler modules is equipped with a control device 800, a spray assembly 700, and a precooling module.

[0054] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the technical solution of this utility model, and are not intended to limit the specific implementation of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A high-efficiency heat-exchange desiccant cooler, characterized in that, Includes a support frame and at least one set of dry cooler modules. The inner side of the support frame is hollow to form an installation space. The middle of the installation space is provided with multiple horizontal support members connected to the support frame. The installation space is divided into an upper installation area and a lower installation area by the horizontal support members. The dry cooler module is located in the upper installation area. The dry cooler module includes a fan unit and two coil assemblies. The fan unit is supported on the top of the upper mounting area by the support frame. The fan unit includes multiple fans arranged sequentially along the length of the support frame. Each fan has an upward-facing air outlet and a downward-facing air inlet. The coil assemblies are supported below the air inlet by the horizontal support member. The two coil assemblies are inclined relative to the air inlet so that the air inlet and the two coil assemblies form an inverted triangular layout. The upper mounting area has side air inlets on its two end faces along its length, and the lower mounting area has a lower air inlet located opposite to the air inlets.

2. The high-efficiency heat exchange desiccant cooler of claim 1, wherein, It also includes a pre-cooling module, which is supported in the lower mounting area by the support frame, and pre-cools the air entering the lower mounting area through the lower air inlet.

3. The high-efficiency heat exchange desiccant cooler of claim 2, wherein, The precooling module includes a wet membrane, a water receiving tray, and a water supply pump. The wet membrane is located near the lower air inlet, and the water receiving tray is supported below the wet membrane by the support frame. The water receiving tray, the water supply pump, and the wet membrane are connected in sequence through pipelines.

4. The high-efficiency heat exchange desiccant cooler of claim 3, wherein, The water supply pump is equipped with a first pressure sensor at its inlet, and / or, The water supply pump is equipped with a second pressure sensor at its outlet; and / or, It also includes a replenishment line for replenishing the water tray; and / or, It also includes a drain pipe for draining liquid from the drip tray; and / or, The precooling module is also equipped with a water spraying component for spraying cooling water onto the wet film.

5. The high-efficiency heat exchange desiccant cooler of claim 3, wherein, The wet membrane is provided in at least two pieces, which are respectively located on both sides of the lower air inlet and are inclined relative to the lower air inlet so that the lower air inlet and the two wet membranes form an inverted triangle layout.

6. The high-efficiency heat exchange desiccant cooler of claim 3, wherein, The wet film is horizontally positioned close to the lower air inlet.

7. The high-efficiency heat exchange desiccant cooler according to any one of claims 1-6, wherein, The coil assembly has a return end and a supply end. The return end is located near the air inlet, and the supply end is located near the horizontal support.

8. The high-efficiency heat exchange desiccant cooler according to any one of claims 1-6, wherein, It also includes a control device and an ambient temperature sensor located on the support frame; The fan is a variable frequency fan; The return end of the coil assembly is equipped with a return water temperature sensor, and the supply end of the coil assembly is equipped with a supply water temperature sensor. The ambient temperature sensor, the return water temperature sensor, the supply water temperature sensor, and the fan are all electrically connected to the control device.

9. The high-efficiency heat exchange desiccant cooler according to any one of claims 1-6, wherein, It also includes a spray assembly located in the upper mounting area, the spray assembly spraying coolant toward the coil assembly.

10. The high-efficiency heat exchange desiccant cooler of any one of claims 1-6, wherein, The dry cooler module is provided in two sets, and the two sets of dry cooler modules are arranged side by side along the width direction of the support frame in the upper mounting area; and / or, The adjacent fans are separated by a partition located in the upper mounting area.

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