An air-cooling diversion structure and method

Abstract

The present invention discloses a flow guiding structure and method for air cooling. The flow guiding structure for air cooling includes a refrigeration unit frame, a flow guiding structure, an air inlet device, an air exhaust device and a flow guiding cover. The refrigeration unit frame has an air inlet and an air exhaust port. The flow guiding structure is arranged between the air inlet and the air exhaust port, and an air flow passage for air flow to pass through is formed within the refrigeration unit frame. The air inlet device is used to suck the air flow outside the air inlet, the air exhaust device is used to discharge the air flow within the air flow passage, and the flow guiding cover is used to guide the air flow direction to the air exhaust device. The air inlet is disposed opposite to the air exhaust port, and the diameter of the air inlet is larger than that of the air exhaust port. The flow guiding structure is used to reduce the turbulent flow area of the gas passing through the refrigeration unit frame and avoid the accumulation of air flow within the refrigeration unit frame. The flow guiding structure for air cooling of the present invention does not require additional external structures to increase the air intake volume of the flow guiding structure for air cooling. By only changing the positions and dimensions of the existing components, it not only saves manpower and material resources, but also increases the air intake volume of the flow guiding structure for air cooling.

Description

Technical Field

[0001] The present invention belongs to the technical field of refrigeration equipment, and more specifically, relates to a flow guiding structure and method for air cooling. Background Art

[0002] Since there are more and more large public buildings such as subway stations, cities, and theaters in cities nowadays, the application of central air conditioners is becoming more and more common. As the core component of the central air conditioner, the refrigeration effect of the refrigeration unit is an important factor in judging the applicability of the central air conditioner. Existing refrigeration units are generally divided into water-cooled refrigeration and air-cooled refrigeration. Water-cooled refrigeration usually uses water to cool high-pressure gaseous refrigerant to condense it. Air-cooled refrigeration uses air to condense gaseous refrigerant. Since water-cooled refrigeration requires the use of a water source, in areas lacking water sources, water-cooled refrigeration is easily restricted due to the lack of a water source and cannot be used. However, air-cooled refrigeration is widely used in recent years because its use is not restricted. The problem with air-cooled refrigeration is that it is restricted by the air intake volume, and the air-cooling effect is not significant.

[0003] To solve the above problems, patent document CN216080097U discloses an outdoor unit of an air conditioner and an air conditioner. By setting a throttle hole and a flow guiding ring at the air outlet of the fan, the air flow deflection at the air outlet of the fan is suppressed to increase the air intake volume. However, the problem is that the improvement of the overall air intake volume is limited. Summary of the Invention

[0004] Aiming at the above defects or improvement requirements of the prior art, the flow guiding structure and method for air cooling provided by the present invention change the distance and size between the air intake device and the air exhaust device, change the connection fillet radius at the connection between the flow guiding structure and the flow guiding cover, and the radius of the air exhaust device, so as to reduce the flow pressure drop in the air flow channel, thereby increasing the air intake volume of the flow guiding structure for air cooling. Without additional external structures, the air intake volume of the flow guiding structure for air cooling can be increased. Only by changing the positions and sizes of existing components, not only manpower and material resources are saved, but also the size of the air intake volume can be adjusted.

[0005] To achieve the above object, according to one aspect of the present invention, there is provided a flow guiding structure for air cooling, including a refrigeration unit frame, a flow guiding structure, an air intake device, an air exhaust device, and a flow guiding cover. The refrigeration unit frame has an air intake and an air exhaust. The flow guiding structure is arranged between the air intake and the air exhaust, and the flow guiding structure forms an air flow channel for air flow to pass through within the refrigeration unit frame. The air intake device is arranged at the air intake, and the air intake device is used to suck the air flow outside the air intake. The air exhaust device is arranged at the air exhaust, and the air exhaust device is used to discharge the air flow in the air flow channel. The flow guiding cover connects the flow guiding structure and the air exhaust device, and the flow guiding cover is used to guide the air flow direction to the air exhaust device.

[0006] Among them, the air inlet and the exhaust outlet are oppositely arranged, the caliber of the air inlet is larger than that of the exhaust outlet, the diversion structure is used to reduce the turbulent flow area of the gas passing through the refrigeration unit frame, avoid the accumulation of air flow in the refrigeration unit frame, there is a correlation between the air inflow volume of the air flow channel and the flow pressure drop in the air flow channel, the flow pressure drop is related to the positions and sizes of the air inlet device and the exhaust device, and the positions and sizes of the air inlet device and the exhaust device are adjusted according to the flow pressure drop.

[0007] Further, the air inflow volume of the air flow channel is inversely proportional to the flow pressure drop in the air flow channel;

[0008] The air-cooling diversion structure has an inclination, and the inclination is the ratio of half of the difference between the height of the air inlet device and the height of the exhaust device to the distance between the air inlet device and the exhaust device. The inclination is directly proportional to the flow pressure drop, and the inclination is adjusted according to the flow pressure drop.

[0009] Further, a connecting fillet is provided at the connection between the diversion structure and the diversion cover, and the radius of the connecting fillet is inversely proportional to the flow pressure drop, and the radius of the connecting fillet is preset.

[0010] Further, the exhaust device includes an axial flow fan, the axial flow fan is installed at the exhaust outlet, the axial flow fan is adapted to the size of the exhaust outlet, the axial flow fan is connected to the diversion cover, the radius of the axial flow fan is directly proportional to the flow pressure drop, and the radius of the axial flow fan is preset.

[0011] Further, the air-cooling diversion structure has an arc ratio, and the arc ratio is the ratio of the radius of the connecting fillet to the radius of the axial flow fan. The arc ratio is inversely proportional to the flow pressure drop.

[0012] Further, when the inclination is less than 1.25, increase the distance between the air inlet device and the exhaust device; and / or

[0013] Reduce the difference between the height of the air inlet device and the height of the exhaust device;

[0014] When the inclination is greater than or equal to 1.25, increase the radius of the connecting fillet; and / or

[0015] Reduce the radius of the axial flow fan.

[0016] Further, the diversion structure adopts an arc transition and tapering, and the connection between the diversion structure and the diversion cover adopts an arc transition form.

[0017] Further, the drainage structure adopts a closed structure. After the intake device is installed with the intake port, the intake device is tightly connected to the intake port. After the exhaust device is installed with the exhaust port, the exhaust device is tightly connected to the exhaust port.

[0018] Further, the intake device includes a condensation heat exchanger, and the size of the condensation heat exchanger is adapted to the size of the intake port;

[0019] The drainage structure is arranged at the first connection part. The first connection part is arranged at the intake port. The first connection part is folded outward towards the drainage structure. The first connection part is provided with a first mounting hole. The condensation heat exchanger is provided with a first matching part. The first matching part is arranged near the air port position. The first matching part is folded outward towards the condensation heat exchanger. The first matching part is provided with a first matching hole adapted to the first mounting hole. The drainage structure can lock the condensation heat exchanger through a fastener;

[0020] The drainage structure is arranged at the second connection part. The second connection part is arranged at the exhaust port. The second connection part is folded outward towards the drainage structure. The second connection part is provided with a second mounting hole. The axial flow fan is provided with a second matching part. The second matching part is arranged near the exhaust port position. The second matching part is folded outward towards the axial flow fan. The second matching part is provided with a second matching hole adapted to the second mounting hole. The drainage structure can lock the axial flow fan through a fastener.

[0021] Further, the connection surface between the first connection part and the first matching part is smooth and flat; and / or

[0022] The connection surface between the second connection part and the second matching part is smooth and flat.

[0023] Further, the first connection part and the drainage structure are integrally arranged; and / or

[0024] The first matching part and the condensation heat exchanger are integrally arranged; and / or

[0025] The second connection part and the drainage structure are integrally arranged; and / or

[0026] The second matching part and the axial flow fan are integrally arranged.

[0027] Further, the material of the drainage structure is aluminum alloy.

[0028] The present invention also provides a design method for the air-cooling diversion structure, which is realized based on the air-cooling diversion structure described in any one of the above, and includes:

[0029] Step 1: Obtain the characteristic parameters of the intake device and the exhaust device, where the characteristic parameters include the height and distance of the intake device and the exhaust device;

[0030] Step 2: Initially add the diversion structure according to the characteristic parameters. The diversion structure is directly connected to the fairing, and the flow pressure drop in the air flow channel is obtained through CFD (Computational Fluid Dynamics);

[0031] Step 3: Keep the characteristic parameters unchanged, adjust the radius parameters of the air-cooling diversion structure, and calculate the current flow pressure drop in the air flow channel through CFD. The radius parameters include the radius of the exhaust device and the radius of the connecting fillet between the diversion structure and the fairing;

[0032] Step 4: Sequentially loop through Step 1, Step 2, and Step 3 to obtain multiple sets of flow pressure drops corresponding to the characteristic parameters and the radius parameters;

[0033] Step 5: Use simulation software to build a mathematical model with multiple sets of flow pressure drops corresponding to the characteristic parameters and the radius parameters;

[0034] Step 6: Analyze the relationship between the flow pressure drop and the characteristic parameters and the radius parameters according to the mathematical model;

[0035] Step 7: Select the characteristic parameters and the radius parameters that meet the requirements of the flow pressure drop according to the mathematical model.

[0036] Generally speaking, compared with the prior art, the above technical solution conceived by the present invention can achieve the following beneficial effects:

[0037] 1. For the air-cooling diversion structure of the present invention, by setting the diversion structure and the fairing to form a barrier between the intake device and the outlet device, when the air flow passes through the turbulent flow area within the refrigeration unit frame, it can be avoided that the air flow agglomerates in the turbulent flow area due to the viscous force and cannot be discharged, reducing the air intake volume of the air-cooling diversion structure. The structure is improved as a whole. At the same time, at the right angle where the turbulent flow area is likely to be generated, a connecting fillet is provided to avoid forming a turbulent flow area that affects the air intake volume, and at the same time, the wind pressure at the right angle is dispersed and the internal stress of the right angle is reduced to improve the service life of the air-cooling diversion structure.

[0038] 2. The air-cooling diversion structure of the present invention changes the distance and size between the air intake device and the air exhaust device, and changes the connection fillet radius at the connection between the diversion structure and the diversion cover and the radius of the air exhaust device, so as to reduce the flow pressure drop in the air flow channel, and further increase the air intake volume of the air-cooling diversion structure. Without additional external structures, the air intake volume of the air-cooling diversion structure can be increased only by changing the positions and sizes of the existing components, which not only saves manpower and material resources, but also can increase the air intake volume of the air-cooling diversion structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a side view of an air-cooling diversion structure according to an embodiment of the present invention;

[0040] Figure 2 It is a schematic diagram of the frame structure of a refrigeration unit in an existing embodiment;

[0041] Figure 3 It is a schematic diagram of the frame structure of a refrigeration unit of an air-cooling diversion structure according to an embodiment of the present invention;

[0042] Figure 4 It is a front perspective view of the mathematical model of the slope, arc ratio and flow pressure drop of an air-cooling diversion structure according to an embodiment of the present invention;

[0043] Figure 5 It is a right perspective view of the mathematical model of the slope, arc ratio and flow pressure drop of an air-cooling diversion structure according to an embodiment of the present invention;

[0044] Figure 6 It is a left perspective view of the mathematical model of the slope, arc ratio and flow pressure drop of an air-cooling diversion structure according to an embodiment of the present invention;

[0045] Figure 7 It is a schematic diagram of the structure of the first connection part and the second cooperation part of an air-cooling diversion structure according to an embodiment of the present invention;

[0046] Figure 8 It is a flowchart of a design method of an air-cooling diversion structure according to an embodiment of the present invention.

[0047] In all the drawings, the same reference numerals represent the same technical features, specifically:

[0048] 10. Air-cooling diversion structure; 11. Refrigeration unit frame; 11a. Turbulent flow area; 111. Air inlet; 112. Air outlet; 12. Drainage structure; 12a. Air flow channel; 12b. Connecting fillet; 121. First connecting part; 1211. First mounting hole; 122. Second connecting part; 1221. Second mounting hole; 13. Air intake device; 131. Condensing heat exchanger; 1311. First mating part; 13111. First mating hole; 14. Exhaust device; 141. Axial flow fan; 1411. Second mating part; 14111. Second mating hole; 15. Diversion cover. Detailed implementation mode

[0049] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0050] As Figure 1 to as Figure 8 shown, the present invention provides an air-cooling diversion structure 10, which specifically includes a refrigeration unit frame 11, a drainage structure 12, an air intake device 13, an exhaust device 14 and a diversion cover 15.

[0051] The main body of the refrigeration unit frame 11 has an air inlet 111 and an air outlet 112. The air inlet 111 and the air outlet 112 are arranged opposite to each other, and the diameter of the air inlet 111 is larger than that of the air outlet 112. In this embodiment, the air inlet 111 and the air outlet 112 are arranged on a straight line. In this way, the air flow can quickly pass through the refrigeration unit frame 11 when passing through it, so as to increase the air intake volume per unit time. And the diameter of the air inlet 111 is larger than that of the air outlet 112, which can increase the flow velocity of the air flow at the air outlet 112. The air intake device 13 is arranged at the air inlet 111, and the air intake device 13 is used to suck the air flow at the air inlet 111. The exhaust device 14 is arranged at the air outlet 112, and the exhaust device 14 is used to discharge the air flow in the main body of the drainage structure 12. The diversion cover 15 is arranged on the exhaust device 14, and the diversion cover 15 is used to guide the air flow for the exhaust device 14, so that the air flow near the exhaust device 14 can quickly flow from the diversion cover 15 to the exhaust device 14. The present invention accelerates the air flow to pass from the outside through the refrigeration unit frame 11 and then be discharged through the relatively arranged air inlet 111 and air outlet 112. The drainage structure 12 is connected between the air intake device 13 and the diversion cover 15 to form an air flow channel 12a for the air flow to pass through, so as to avoid the air flow flowing to the turbulent flow area 11a of the refrigeration unit frame 11 and being unable to be discharged from the air outlet 112.

[0052] Reference Figure 2 As can be seen, when the air flow flows towards the exhaust port 112, turbulent flow regions 11a will be formed on the upper and lower sides of the exhaust port 112 and near the exhaust port 112. When the air flow passes through the turbulent flow regions 11a, due to the action of viscous force, the air flow will agglomerate in the turbulent flow regions 11a and cannot be discharged through the exhaust port 112. The main body of the diversion structure 12 and the diversion cover 15 of the present invention are connected between the intake device 13 and the exhaust device 14, reducing the air flow passing through the turbulent flow regions 11a to avoid the agglomeration of the air flow within the refrigeration unit frame 11, which reduces the air intake volume of the air-cooled diversion structure 10. Further, a connecting fillet 12b is provided between the diversion structure 12 and the diversion cover 15. It can be understood that compared with setting it as a right angle, using the connecting fillet 12b can avoid generating a turbulent flow region 11a at the right angle and affecting the air intake volume. On the other hand, using the connecting fillet 12b can disperse the wind pressure received at the connecting fillet 12b to improve the service life of the air-cooled diversion structure 10.

[0053] Furthermore, the positions and sizes of the intake device 13 and the exhaust device 14 are related to the air intake volume of the air-cooled diversion structure 10. That is to say, by adjusting the positions of the intake device 13 and the exhaust device 14 and changing the distance between the intake device 13 and the exhaust device 14, the air intake volume of the air-cooled diversion structure 10 can be increased. By adjusting the sizes of the intake device 13 and the exhaust device 14, the air intake volume of the air-cooled diversion structure 10 can be increased. Specifically, when the air flow passes through the air flow channel 12a, a flow pressure drop will be generated within the air flow channel 12a. That is to say, when the air flow passes through the air flow channel 12a, static pressure will be formed between two flow cross-sections of the air flow channel 12a. Since the wind pressure is equal to the dynamic pressure plus the static pressure, and the wind speed is in a proportional relationship with the dynamic pressure, and the air volume is equal to the wind speed multiplied by the cross-sectional area through which the air flow passes, it can be known that when the wind pressure is constant, reducing the flow pressure drop can increase the air intake volume.

[0054] Specifically, referring to the figure, in this rectangular coordinate system, the X-axis represents the air intake volume of the air-cooled diversion structure 10, the Y-axis represents the flow pressure drop of the air-cooled diversion structure 10, and the black curve is the performance curve of the air-cooled diversion structure 10, that is, it represents the curve of the change of the air intake volume of the air-cooled diversion structure 10 with the change of the flow pressure drop. From this black curve, it can be known that reducing the flow pressure drop when the air flow passes through the air flow channel 12a can increase the air intake volume of the air-cooled diversion structure 10, that is, there is an inverse proportional relationship between the flow pressure drop and the air intake volume. The red curve is the curve of the change of the air intake volume with the change of the flow pressure drop without the diversion structure 12.

[0055] Reference Figure 4 、 Figure 5 and Figure 6, in a three-dimensional coordinate system, the X-axis represents the slope of the air-cooling diversion structure 10, the Y-axis represents the arc ratio of the air-cooling diversion structure 10, and the Z-axis represents the flow pressure drop of the air-cooling diversion structure 10. In this embodiment, we define the ratio of half of the difference in height between the intake device 13 and the exhaust device 14 to the distance between the intake device 13 and the exhaust device 14 as the slope, and the ratio of the radius of the connecting fillet 12b to the radius of the exhaust device 14 as the arc ratio. It can be observed that when the arc ratio is constant, as the slope of the air-cooling diversion structure 10 increases, the flow pressure drop of the air-cooling diversion structure 10 also increases. That is to say, there is a direct proportional relationship between the slope of the air-cooling diversion structure 10 and the flow pressure drop of the air-cooling diversion structure 10. Further, since there is an inverse proportional relationship between the flow pressure drop and the air intake volume of the air-cooling diversion structure 10, then, by controlling the slope of the air-cooling diversion structure 10 to be smaller, the air intake volume of the air-cooling diversion structure 10 can be increased. Specifically, in actual operation, the air intake volume of the air-cooling diversion structure 10 can be increased by reducing the difference in height between the intake device 13 and the exhaust device 14, or by increasing the distance between the intake device 13 and the exhaust device 14. The advantage of this setting is that without adding additional structures to the air-cooling diversion structure 10, only by changing the positions and sizes of the existing components, the air intake volume of the air-cooling diversion structure 10 can be increased, which not only saves manpower and material resources, but also enables the adjustment of the air intake volume size.

[0056] Further, when the slope is constant, as the arc ratio of the air-cooling diversion structure 10 increases, the flow pressure drop of the air-cooling diversion structure 10 decreases. That is to say, there is an inverse proportional relationship between the arc ratio of the air-cooling diversion structure 10 and the flow pressure drop of the air-cooling diversion structure 10. Further, since there is an inverse proportional relationship between the flow pressure drop and the air intake volume of the air-cooling diversion structure 10, then, by controlling the arc ratio of the air-cooling diversion structure 10 to be larger, the air intake volume of the air-cooling diversion structure 10 can be increased. Specifically, in actual operation, the air intake volume of the air-cooling diversion structure 10 can be increased by increasing the radius of the connecting fillet 12b, or by reducing the radius of the exhaust device 14. The advantage of this setting is that without adding additional structures to the air-cooling diversion structure 10, only by changing the radius of the connecting fillet of the existing components, the air intake volume of the air-cooling diversion structure 10 can be increased, which not only saves manpower and material resources, but also enables the adjustment of the air intake volume size.

[0057] Preferably, when the slope of the air-cooling diversion structure 10 is less than 1.25, compared with changing the arc ratio of the air-cooling diversion structure 10, the change in the flow pressure drop of the air-cooling diversion structure 10 is obvious. That is to say, at this time, the slope of the air-cooling diversion structure 10 should be changed to increase the air intake. When the slope of the air-cooling diversion structure 10 is greater than or equal to 1.25, by changing the arc ratio of the air-cooling diversion structure 10, the change in the flow pressure drop of the air-cooling diversion structure 10 is obvious. It can be seen that when the slope of the air-cooling diversion structure 10 is greater than or equal to 1.25, by increasing the radius of the connecting fillet 12b or reducing the radius of the exhaust device 14, the air intake can be significantly increased.

[0058] In one embodiment, an arc-transition reduction structure is adopted between the air inlet 111 and the air outlet 112 of the diversion structure 12. It can be understood that using the arc-transition reduction structure can form an air pressure on the inner wall of the diversion structure 12 that squeezes towards the air outlet 112, increasing the flow rate of the air outlet 112. At the same time, the diversion structure 12 is set to be arc-shaped, so that when the air flow flows towards the inner wall of the diversion structure 12, it can be tangent to the inner wall of the diversion structure 12 without forming an impact on the inner wall of the diversion structure 12, which can extend the service life of the air-cooling diversion structure 10.

[0059] Furthermore, an arc-transition form is adopted at the connection between the diversion structure 12 and the diversion cover 15. The advantages of this setting are as follows. On the one hand, it can avoid the generation of internal stress at the connection between the diversion structure 12 and the diversion cover 15, which may cause the connection between the diversion structure 12 and the diversion cover 15 to be easily damaged, affecting the service life of the air-cooling diversion structure 10. On the other hand, it can avoid the generation of cracks at the connection between the diversion structure 12 and the diversion cover 15, and the air leakage from the cracks will affect the airtightness, resulting in a reduction in the air intake of the air-cooling diversion structure 10.

[0060] In one embodiment, the diversion structure 12 is a closed structure. After the intake device 13 and the exhaust device 14 are respectively installed at the air inlet 111 and the air outlet 112, the connection between the air inlet 111 and the air outlet 112 is tight to prevent the air flow inside the diversion structure 12 from leaking. It can be understood that through this sealed structure, the airtightness of the diversion structure 12 can be improved.

[0061] In one embodiment, the material of the diversion structure 12 is aluminum alloy, and the surface of the aluminum alloy is subjected to anodic oxidation treatment. It can be understood that the aluminum alloy material has the characteristics of low density and light weight. Using aluminum alloy can reduce the mass of the air-cooling diversion structure 10, making it convenient for installation and use. At the same time, aluminum alloy has good corrosion resistance and can avoid being corroded by water vapor and acid-base gases in the air flow. In addition, anodic oxidation is also carried out on the surface of the aluminum alloy to form an anti-corrosion layer on the surface of the aluminum alloy.

[0062] In one embodiment, the intake device 13 is configured as a condensation heat exchanger 131. The size of the condensation heat exchanger 131 is adapted to the size of the intake port 111. The condensation heat exchanger 131 is used to cool the air flow entering the intake port 111. Specifically, a refrigerant is contained in the pipeline of the condensation heat exchanger 131, and fins are provided on the outer side of the pipeline of the condensation heat exchanger 131. When the air flow passes through, the heat of the air flow can be carried away due to the vaporization of the refrigerant, so as to generate cold air. The exhaust device 14 is configured as an axial flow fan 141. The axial flow fan 141 is easy to install. In this way, the installation steps of the air-cooling diversion structure 10 can be simplified. At the same time, the axial flow fan 141 has low noise and can avoid generating noise during use.

[0063] In one embodiment, a first connection portion 121 is provided at a position where the diversion structure 12 is close to the intake port 111. The first connection portion 121 is turned outward with respect to the diversion structure 12. The first connection portion 121 is provided with a first mounting hole 1211. A first mating portion 1311 is provided at a position where the condensation heat exchanger 131 is close to the intake port 111. The first mating portion 1311 is turned outward with respect to the condensation heat exchanger 131. The first mating portion 1311 is provided with a first mating hole 13111. The diversion structure 12 can lock the condensation heat exchanger 131 by passing a fastener through the first mounting hole 1211 and the first mating hole 13111. A sealing strip is also provided at the connection between the first connection portion 121 and the first mating portion 1311. The sealing strip can prevent air flow from leaking from the connection between the first connection portion 121 and the first mating portion 1311.

[0064] Further, a second connection portion 122 is provided at a position where the diversion structure 12 is close to the exhaust port 112. The second connection portion 122 is turned outward with respect to the diversion structure 12. The second connection portion 122 is provided with a second mounting hole 1221. A second mating portion 1411 is provided at a position where the axial flow fan 141 is close to the exhaust port 112. The second mating portion 1411 is turned outward with respect to the axial flow fan 141. The second mating portion 1411 is provided with a second mating hole 14111. The diversion structure 12 can lock the axial flow fan 141 by passing a fastener through the second mounting hole 1221 and the second mating hole 14111. A sealing strip is also provided at the connection between the second connection portion 122 and the second mating portion 1411. The sealing strip can prevent air flow from leaking from the connection between the second connection portion 122 and the second mating portion 1411.

[0065] Further, the connection surface between the first connection portion 121 and the first mating portion 1311 is smooth and flat. The advantage of such a setting is that, on the one hand, it is convenient for the connection between the first connection portion 121 and the first mating portion 1311, so as to avoid the difficulty in connecting the first connection portion 121 and the first mating portion 1311 due to the rough surface. On the other hand, since the connection surface between the first connection portion 121 and the first mating portion 1311 is smooth and flat, it can prevent air flow from leaking from the connection between the diversion structure 12 and the condensation heat exchanger 131.

[0066] Further, the connection surface between the second connection portion 122 and the second mating portion 1411 is smooth and flat. The advantage of such a setting is that, on the one hand, it is convenient for the connection between the second connection portion 122 and the second mating portion 1411, so as to avoid the difficulty in connecting the second connection portion 122 and the second mating portion 1411 due to rough surfaces. On the other hand, since the connection surface between the second connection portion 122 and the second mating portion 1411 is smooth and flat, it can prevent air leakage from the connection between the drainage structure 12 and the axial flow fan 141.

[0067] Further, the first connection portion 121 and the drainage structure 12 are integrally provided. It can be understood that through the integral setting, on the one hand, the structural strength of the first connection portion 121 and the drainage structure 12 can be higher. On the other hand, without an externally provided first connection portion 121, the connection steps between the first connection portion 121 and the drainage structure 12 can be reduced, and at the same time, costs can be saved.

[0068] Further, the first mating portion 1311 and the condensation heat exchanger 131 are integrally provided. It can be understood that through the integral setting, on the one hand, the structural strength of the first mating portion 1311 and the condensation heat exchanger 131 can be higher. On the other hand, without an externally provided first mating portion 1311, the connection steps between the first mating portion 1311 and the condensation heat exchanger 131 can be reduced, and at the same time, costs can be saved.

[0069] Further, the second connection portion 122 and the drainage structure 12 are integrally provided. It can be understood that through the integral setting, on the one hand, the structural strength of the second connection portion 122 and the drainage structure 12 can be higher. On the other hand, without an externally provided second connection portion 122, the connection steps between the second connection portion 122 and the drainage structure 12 can be reduced, and at the same time, costs can be saved.

[0070] Further, the second mating portion 1411 and the axial flow fan 141 are integrally provided. It can be understood that through the integral setting, on the one hand, the structural strength of the second mating portion 1411 and the axial flow fan 141 can be higher. On the other hand, without an externally provided second mating portion 1411, the connection steps between the second mating portion 1411 and the axial flow fan 141 can be reduced, and at the same time, costs can be saved.

[0071] The present invention also provides a design method for a diversion structure for air cooling, and the method includes the following steps:

[0072] Step 1: Obtain the characteristic parameters of the intake device 13 and the exhaust device 14, and the characteristic parameters include the height and distance of the intake device 13 and the exhaust device 14;

[0073] Step 2: Initially add a flow guiding structure 12 according to the characteristic parameters. The flow guiding structure 12 is directly connected to the flow deflector 15, and the flow pressure drop in the air flow channel 12a is obtained through CFD (Computational Fluid Dynamics).

[0074] Step 3: Keep the characteristic parameters unchanged, adjust the radius parameters of the air-cooling flow guiding structure 10, and calculate the flow pressure drop in the current air flow channel 12a through CFD. The radius parameters include the radius of the exhaust device 13 and the radius of the connecting fillet 12b between the flow guiding structure 12 and the flow deflector 15.

[0075] Step 4: Sequentially loop through Step 1, Step 2, and Step 3 to obtain multiple sets of flow pressure drops corresponding to the characteristic parameters and radius parameters.

[0076] Step 5: Use simulation software to build a mathematical model with the multiple sets of flow pressure drops corresponding to the characteristic parameters and radius parameters.

[0077] Step 6: Analyze the relationship between the flow pressure drop and the characteristic parameters and radius parameters based on the mathematical model.

[0078] Step 7: Select the characteristic parameters and radius parameters that meet the requirements of the flow pressure drop according to the mathematical model.

[0079] Those skilled in the art can easily understand that the above description is only a preferred embodiment of the present invention and is not used to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A flow guiding structure for air cooling, characterized in that, Comprising: A refrigeration unit frame having an air inlet and an air outlet; A diversion structure provided between the air inlet and the air outlet, the diversion structure forming an air flow passage for air flow to pass through within the refrigeration unit frame; An air inlet device provided at the air inlet, the air inlet device being used to suck in the air flow outside the air inlet; An air outlet device provided at the air outlet; The air outlet device being used to discharge the air flow within the air flow passage; And a flow guide cover connecting the diversion structure and the air outlet device, the flow guide cover being used to guide the air flow direction to the air outlet device; Wherein, the air outlet device includes an axial flow fan; the air inlet and the air outlet are oppositely arranged, the diameter of the air inlet is larger than the diameter of the air outlet, the diversion structure is used to reduce the turbulent flow area of the gas passing through the refrigeration unit frame, avoid the air flow from gathering within the refrigeration unit frame, there is a correlation between the air inflow volume of the air flow passage and the flow pressure drop within the air flow passage, the flow pressure drop is related to the positions and sizes of the air inlet device and the air outlet device, and the positions and sizes of the air inlet device and the air outlet device are adjusted according to the flow pressure drop; The air inflow volume of the air flow passage is inversely proportional to the flow pressure drop within the air flow passage; The air-cooling diversion structure has an inclination, the inclination is the ratio of half of the difference between the height of the air inlet device and the height of the air outlet device to the distance between the air inlet device and the air outlet device, the inclination is directly proportional to the flow pressure drop, and the inclination is adjusted according to the flow pressure drop; The air inlet device includes a condensation heat exchanger, the size of the condensation heat exchanger is adapted to the size of the air inlet; the diversion structure is provided with a first connection part, the first connection part is provided at the air inlet, the first connection part is folded outward towards the outside of the diversion structure, the first connection part is provided with a first mounting hole, the condensation heat exchanger is provided with a first mating part, the first mating part is provided at a position close to the air inlet, the first mating part is folded outward towards the outside of the condensation heat exchanger, the first mating part is provided with a first mating hole adapted to the first mounting hole, and the diversion structure locks the condensation heat exchanger through fasteners; the diversion structure is provided with a second connection part, the second connection part is provided at the air outlet, the second connection part is folded outward towards the outside of the diversion structure, the second connection part is provided with a second mounting hole, the axial flow fan is provided with a second mating part, the second mating part is provided at a position close to the air outlet, the second mating part is folded outward towards the outside of the axial flow fan, the second mating part is provided with a second mating hole adapted to the second mounting hole, and the diversion structure locks the axial flow fan through fasteners.

2. The flow guiding structure for air cooling according to claim 1, characterized in that, A connection fillet is formed at the connection between the diversion structure and the flow guide cover, the radius of the connection fillet is inversely proportional to the flow pressure drop, and the radius of the connection fillet is preset.

3. The flow guiding structure for air cooling according to claim 2, characterized in that, The axial flow fan is installed at the exhaust port, the axial flow fan is adapted to the size of the exhaust port, the axial flow fan is connected to the flow guide cover, the radius of the axial flow fan is in a proportional relationship with the flow pressure drop, and the radius of the axial flow fan is preset.

4. The flow guiding structure for air cooling according to claim 3, characterized in that, The air-cooling flow guide structure has an arc ratio, which is the ratio of the radius of the connecting fillet to the radius of the axial flow fan, and the arc ratio is in an inverse proportional relationship with the flow pressure drop.

5. The flow guiding structure for air cooling according to any one of claims 2 to 4, characterized in that, When the slope is less than 1.25, increase the distance between the intake device and the exhaust device; and / or Reduce the difference in height between the intake device and the exhaust device; When the slope is greater than or equal to 1.25, increase the radius of the connecting fillet; and / or Reduce the radius of the axial flow fan.

6. The flow guiding structure for air cooling according to claim 5, characterized in that, The drainage structure adopts a closed structure. After the intake device is installed with the intake port, the intake device is tightly connected to the intake port. After the exhaust device is installed with the exhaust port, the exhaust device is tightly connected to the exhaust port.

7. The flow guiding structure for air cooling according to claim 6, characterized in that, The connection surface between the first connecting portion and the first mating portion is smooth and flat; and / or The connection surface between the second connecting portion and the second mating portion is smooth and flat.

8. The flow guiding structure for air cooling according to claim 7, characterized in that, The first connecting portion is integrally provided with the drainage structure; and / or The first mating portion and the condensation heat exchanger are integrally provided; and / or The second connecting portion is integrally provided with the drainage structure; and / or The second mating portion and the axial flow fan are integrally provided.

9. The flow guiding structure for air cooling according to any one of claims 2 to 4, characterized in that, The material of the drainage structure is aluminum alloy.

10. A design method for a flow guiding structure for air cooling, implemented based on the flow guiding structure for air cooling according to any one of claims 1 to 9, comprising: Step 1: Obtain the characteristic parameters of the intake device and the exhaust device, and the characteristic parameters include the height and distance of the intake device and the exhaust device; Step 2: According to the characteristic parameters, preliminarily add the drainage structure, and the drainage structure is directly connected to the flow guide cover, and the flow pressure drop in the air flow channel is obtained by CFD (Computational Fluid Dynamics); Step 3: Keep the characteristic parameters unchanged, adjust the radius parameters of the air-cooling flow guide structure and calculate the current flow pressure drop in the air flow channel by CFD, and the radius parameters include the radius of the exhaust device and the radius of the connecting fillet at the connection between the drainage structure and the flow guide cover; Step 4: Sequentially loop through Step 1, Step 2, and Step 3 to obtain multiple sets of flow pressure drops corresponding to the characteristic parameters and the radius parameters; Step 5: Use simulation software to build a mathematical model with the flow pressure drops corresponding to multiple sets of the characteristic parameters and the radius parameters; Step 6: Analyze the relationship between the flow pressure drop and the characteristic parameters and the radius parameters according to the mathematical model; Step 7: Select the characteristic parameters and the radius parameters that meet the requirements of the flow pressure drop according to the mathematical model.

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