Low-resistance and high-efficiency air uniformizing device for air cooling system

Abstract

The utility model discloses a low-resistance and high-efficiency air uniformizing device for an air cooling system. The low-resistance and high-efficiency air uniformizing device comprises an air inlet part, a flow guide part, an air uniformizing part and an air outlet part, the two ends of the flow guide part are connected with the air inlet part and the air uniformizing part respectively, the end, away from the flow guide plate, of the air uniformizing part is connected with the air outlet part, and the air outlet part comprises a plurality of air outlets; a plurality of air outlets are uniformly arranged at intervals along the end plate of the air uniformizing part, and are symmetrically arranged along the central position of the air uniformizing part; according to the scheme, the air inlet part is connected with the external cooling fan, cooling air enters the air uniformizing device from the air inlet part, sequentially penetrates through the flow guide part and the air uniformizing part and is finally divided into a plurality of air beams from the air outlet part to be discharged, and due to the fact that the phenomena of uneven flow deflection and the like possibly exist in the upstream air inlet device, a section of relatively straight flow guide area needs to be designed; cooling air is promoted to linearly move in the flow guide direction, the bias flow phenomenon is reduced, meanwhile, the multiple air outlets are formed, and the overall air distribution effect can be better.

Description

Technical Field

[0001] This utility model relates to the field of air-cooled central roller crusher technology, and in particular to a low-resistance and high-efficiency air distribution device for air-cooled systems. Background Technology

[0002] In the building materials industry, grate coolers with central roller crushers are commonly used to cool high-temperature clinker. There are two types of cooling protection for central roller crushers: air-cooled and water-cooled. Air-cooled central roller crushers are currently the more mainstream cooling protection method. Air-cooled central roller crushers typically use a single cooling fan to cool multiple rollers and multiple frames. Considering that the roller components experience greater stress and their role is more prominent, a larger airflow is required for cooling the roller components. Conversely, the frames experience less stress and have a certain amount of insulation, therefore, a relatively smaller airflow is needed for cooling the frames.

[0003] Under the above operating conditions, a device is needed to divide a cooling air source into several portions of cooling air. Taking the most common air-cooled central roller crusher as an example, a cooling air source needs to be divided into 4 equal portions of roller cooling air and 2 relatively small and equal portions of frame cooling air, with a distribution ratio of approximately 1:2:2:2:2:1.

[0004] The most common current method for air distribution is to install a corresponding number of air valves and ordinary air ducts to regulate the required air volume at each location. This method has the following problems: First, air valves are difficult to adjust, resulting in poor air distribution, especially when distributing air at multiple points. Adjusting one point affects the air volume at other points, making it difficult to achieve the goal of uniform airflow at multiple points. Second, air valves often have variable cross-sections, resulting in higher air velocity when cooling air passes through them. Considering that resistance is proportional to the square of velocity, the installation of air valves increases the resistance of the system's duct network, leading to increased power consumption in the long run and hindering energy conservation, emission reduction, and emission reduction. Third, the structure is relatively complex, requiring a large amount of space and making layout relatively difficult. Fourth, the large number of air valves required, along with the need for ductwork, results in relatively high investment costs.

[0005] Therefore, designing an air distribution device with good air distribution effect, low resistance, simple structure, and low cost is of great significance. Furthermore, this type of air distribution device can also be used in other similar air distribution conditions, providing a strong reference for the design of other similar conditions, while also contributing to energy conservation, emission reduction, and overall cost reduction. Utility Model Content

[0006] The purpose of this invention is to provide a low-resistance, high-efficiency air distribution device for air-cooled systems, addressing the aforementioned shortcomings and solving the problems of poor air distribution effect, high resistance, complex structure, and high cost of existing air distribution devices.

[0007] This utility model is achieved through the following solution:

[0008] A low-resistance, high-efficiency air distribution device for an air-cooled system includes an air inlet, a guide section, an air distribution section, and an air outlet. The two ends of the guide section are connected to the air inlet and the air distribution section, respectively. The end of the air distribution section away from the guide plate is connected to the air outlet. The air outlet includes multiple air outlets. The air outlets are evenly spaced along the end plate of the air distribution section and are symmetrically arranged along the center position of the air distribution section.

[0009] Based on the structure of the low-resistance and high-efficiency air distribution device for an air-cooled system described above, an air inlet flange is provided at the end of the air inlet section; the air inlet flange is arranged along the circumferential position of the air inlet section, and the air inlet flange is generally rectangular in structure.

[0010] Based on the structure of the low-resistance and high-efficiency air distribution device for an air-cooled system described above, the flow guide is a linear structure, and the flow guide includes a flow guide cover, a longitudinal flow guide plate, and a transverse flow guide plate; the flow guide cover and the longitudinal flow guide plate form a rectangular cavity structure, and the transverse flow guide plate is located at the center of the rectangular cavity structure, and the transverse flow guide plate is arranged perpendicular to the longitudinal flow guide plate.

[0011] Based on the structure of the low-resistance, high-efficiency air distribution device for an air-cooled system described above, the length of the longitudinal guide plate is equal to the height H of the guide section, and the height H of the guide section is at least 1 / 3 of the length of the air inlet flange.

[0012] Based on the structure of the low-resistance, high-efficiency air distribution device for an air-cooled system described above, the air distribution section includes a flared plate, an extension plate, air distribution side plates, an air distribution top plate, and an end plate; one end of the flared plate is connected to the end of the air guide cover, the extension plate is connected to the flared plate, the flared plate is connected to the end plate, the end plate is connected to the air distribution top plate, and the air distribution side plates are disposed on both sides of the air distribution section, and the air distribution side plates are respectively connected to the flared plate, the extension plate, the air distribution top plate, and the end plate.

[0013] Based on the structure of the low-resistance and high-efficiency air distribution device for an air-cooled system described above, the flared plate is set at a first angle to the horizontal plane, and the outer extension plate is set at a second angle to the horizontal plane; the second angle is not greater than the first angle.

[0014] Based on the structure of the low-resistance, high-efficiency air distribution device for an air-cooled system described above, the first included angle ranges from 30° to 50°, the second included angle ranges from 10° to 30°, and the height h of the end plate is 80 to 150 mm.

[0015] Based on the structure of the low-resistance, high-efficiency air distribution device for an air-cooled system described above, the air outlet specifically includes a first air outlet, a second air outlet, and a third air outlet; the first air outlet, the second air outlet, and the third air outlet form a single-sided air outlet end, which is symmetrically arranged along the center of the air distribution top plate; the first air outlet, the second air outlet, and the third air outlet are arranged sequentially from the center to the edge of the air distribution top plate; the first air outlet, the second air outlet, and the third air outlet are respectively provided with a first flange, a second flange, and a third flange.

[0016] Based on the structure of the low-resistance, high-efficiency air distribution device for an air-cooled system described above, the first and third air outlets are both linear structures, and the second air outlet is an inverted cone shape with an flared opening; the diameter of the third air outlet is smaller than that of the first air outlet, so that the air volume of the six air outlets on the top plate is 1:2:2:2:2:1 in sequence.

[0017] Based on the structure of the low-resistance, high-efficiency air distribution device for an air-cooled system described above, the size of the third air outlet is two-thirds of the size of the first air outlet; the width of the guide section is the same as the width of the air distribution section, and the width of the air distribution section is twice the width of the air outlet section.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0019] 1. The air inlet of this solution is connected to the external cooling fan. The cooling air enters the air distribution device from the air inlet, passes through the guide section and the air distribution section in sequence, and is finally discharged from the air outlet by being divided into several air jets. Since there may be uneven flow in the upstream air inlet device, it is necessary to design a relatively straight guide section to make the cooling air move in a straight line along the guide direction and reduce the flow deviation. At the same time, setting multiple air outlets can make the overall air distribution effect better.

[0020] 2. This solution can reliably achieve on-demand airflow distribution without the need for adjustment, and the airflow distribution effect is good.

[0021] 3. The air distribution device in this solution has low resistance, which can reduce the additional power consumption caused by air distribution.

[0022] 4. The air distribution device in this scheme has a simple structure, requires little space, and is easy to arrange.

[0023] 5. The air distribution device in this solution is simplified, with no regulating valve, resulting in low investment costs. Attached Figure Description

[0024] Appendix Figure 1 This is an isometric view of the air distribution device;

[0025] Appendix Figure 2 This is the front view of the air distribution device;

[0026] Appendix Figure 3 This is a longitudinal sectional view of the air distribution device;

[0027] Appendix Figure 4 This is a top view of the air distribution device;

[0028] Appendix Figure 5 This is a cross-sectional view of the air distribution device;

[0029] Appendix Figure 6 This is a schematic diagram of the flow field under the uniform air distribution device.

[0030] Figure descriptions: 1. Air inlet; 2. Air guide; 3. Air distribution section; 4. Air outlet; 11. Air inlet flange; 21. Air guide cover; 22. Longitudinal air guide plate; 23. Transverse air guide plate; 31. Flared plate; 32. Outer extension plate; 33. Air distribution side plate; 34. Air distribution top plate; 35. End plate; 41. First air outlet; 42. Second air outlet; 43. Third air outlet; 44. First flange; 45. Second flange; 46. Third flange. Detailed Implementation

[0031] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0032] Any feature disclosed in this specification (including any appended claims and abstract) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0033] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0035] Example 1

[0036] like Figures 1-6 As shown, this utility model provides a technical solution:

[0037] A low-resistance, high-efficiency air distribution device for an air-cooled system includes, but is not limited to, an air inlet 1, a guide section 2, an air distribution section 3, and an air outlet 4. The two ends of the guide section 2 are connected to the air inlet 1 and the air distribution section 3, respectively. The end of the air distribution section 3 away from the guide plate is connected to the air outlet 4. The air outlet 4 includes multiple air outlets. Multiple air outlets are evenly spaced along the end plate 35 of the air distribution section 3 and are symmetrically arranged along the center position of the air distribution section 3.

[0038] Based on the above structure, the air inlet 1 is connected to the external cooling fan. The cooling air enters the air distribution device from the air inlet 1, passes through the guide section 2 and the air distribution section 3 in sequence, and is finally discharged from the air outlet 4 by being divided into several air jets. Since there may be uneven flow in the upstream air inlet device, it is necessary to design a relatively straight guide section to make the cooling air move in a straight line along the guide direction and reduce the flow deviation. At the same time, setting multiple air outlets can make the overall air distribution effect better.

[0039] As an example, an air inlet flange 11 is provided at the end of the air inlet section 1; the air inlet flange 11 is provided along the circumferential position of the air inlet section 1, and the air inlet flange 11 is a rectangular structure in general.

[0040] Based on the above structure, the air inlet 1 is connected to the cooling fan through the air inlet flange 11, which allows the air distribution device to be quickly disassembled and assembled with the cooling fan, while also ensuring the connection strength between the air distribution device and the cooling fan. The cooling air enters the guide area of ​​the air distribution device through the air inlet flange 11.

[0041] As an example, the flow guide 2 can be a straight structure. The flow guide 2 can include a flow guide cover 21, a longitudinal flow guide plate 22 and a transverse flow guide plate 23. The flow guide cover 21 and the longitudinal flow guide plate 22 form a rectangular cavity structure. The transverse flow guide plate 23 is located at the center of the rectangular cavity structure and is perpendicular to the longitudinal flow guide plate 22.

[0042] Based on the above structure, a rectangular cavity structure is formed by the guide shroud 21 and the longitudinal guide plate 22, which can guide the cooling air in the rectangular cavity structure and eliminate turbulence during air intake. The transverse guide plate 23 is vertically set in the cavity structure, which can divide the cavity structure into two areas. Air is guided in a relatively smaller area, which can improve the guiding effect. The height H of the guiding area is set according to the flow deviation of the upstream air intake device. If the upstream air intake device has serious flow deviation, the value of H needs to be increased accordingly, and vice versa.

[0043] As an example, the length of the longitudinal guide plate 22 is equal to the height H of the guide section 2, and the height H of the guide section 2 is at least 1 / 3 of the length of the inlet flange. This can improve the airflow guiding effect.

[0044] As an example, the air distribution section 3 may include a flared plate 31, an extension plate 32, an air distribution side plate 33, an air distribution top plate 34, and an end plate 35; one end of the flared plate 31 is connected to the end of the flow guide cover 21, the extension plate 32 is connected to the flared plate 31, the flared plate 31 is connected to the end plate 35, the end plate 35 is connected to the air distribution top plate 34, and the air distribution side plate 33 is disposed on both sides of the air distribution section 3, and the air distribution side plate 33 is connected to the flared plate 31, the extension plate 32, the air distribution top plate 34, and the end plate 35 respectively.

[0045] The flared plate 31 is set at a first angle to the horizontal plane, and the extension plate 32 is set at a second angle to the horizontal plane; the second angle is not greater than the first angle.

[0046] The first included angle ranges from 30° to 50°, the second included angle ranges from 10° to 30°, and the height h of the end plate 35 is 80 to 150 mm.

[0047] Based on the above structure, in this scheme, the cooling air, after being guided, continues upward into the air distribution area. From the longitudinal sectional view, due to the presence of flared plates 31 and extension plates 32 with a certain angle, the cooling air gradually diffuses to both sides. This avoids a large amount of cooling air directly entering the nearest air outlet; instead, it is distributed to both sides along the flared plates 31 and extension plates 32. The flared plates 31 are distributed at 30-50°, and the extension plates 32 are distributed at 10-30°. That is, the air distribution area has at least two T-shaped symmetrical structures with zigzag distributions, or it can be divided into two independent cantilevered asymmetrical structures along the center line. The height h (80-150mm) of the end plate 35 is relatively small, resulting in a smaller cooling airflow in the end plate 35 area. Therefore, the height of the end plate 35 needs to be controlled. Furthermore, if the height of the end plate 35 is too high, turbulent vortices will appear in the newly added lower half of the air distribution area, affecting the airflow distribution, causing some self-consumption, wasting energy, and also affecting the air distribution effect.

[0048] As an example, the air outlet 4 specifically includes a first air outlet 41, a second air outlet 42, and a third air outlet 43; the first air outlet 41, the second air outlet 42, and the third air outlet 43 form a single-sided air outlet end, which is symmetrically arranged along the center of the wind-equalizing top plate 34. That is, two symmetrically arranged first air outlets 41, second air outlets 42, and third air outlets 43 are provided on the wind-equalizing top plate 34, and the first air outlets 41, second air outlets 42, and third air outlets 43 are arranged sequentially from the center to the edge of the wind-equalizing top plate 34.

[0049] A first flange 44, a second flange 45, and a third flange 46 are respectively provided at the first air outlet 41, the second air outlet 42, and the third air outlet 43, which are connected to the outside world.

[0050] The first air outlet 41 and the third air outlet 43 are both linear structures, and the second air outlet 42 is an inverted cone shape with an flared opening. The diameter of the third air outlet 43 is smaller than that of the first air outlet 41, so that the air volume of the six air outlets on the wind distribution plate 34 is 1:2:2:2:2:1 in sequence.

[0051] Based on the above structure, since the first air outlet 41 is located at the center of the air guide, the air gathering capacity at this location is relatively strong, so its diameter is set to the maximum. The second air outlet 42 is slightly off-center, so it is set as an inverted cone-shaped structure with an flared opening to enhance the air gathering capacity and make its air volume the same as that of the first air outlet 41. The third air outlet 43 is located at the edge, so it is set as a tubular structure with a smaller diameter to enable it to also have a certain air gathering capacity.

[0052] As an example, the size of the third air outlet 43 is two-thirds the size of the first air outlet 41. This allows the airflow from the third air outlet 43, located at the edge, to be half the airflow from the first air outlet 41.

[0053] As an example, the width of the guide section 2 is the same as the width of the air distribution section 3, and the width of the air distribution section 3 is twice the width of the air outlet section 4. This arrangement is beneficial for air distribution and does not generate vortex rotation.

[0054] Appendix Figure 1 This is a front view of the air distribution device, clearly showing its shape and functional areas. At the bottom is a relatively large air inlet connected to the cooling fan. Above the inlet is a straight guide section of a certain height, which straightens the cooling air into relatively parallel airflow, facilitating subsequent air distribution. Above the guide section is the air distribution area, which is a multi-segmented, flared T-shaped area that effectively achieves uniform airflow and avoids eddies. Above the air distribution area are several air outlets. The ratio of the outlet airflow shown in the figure, from left to right, is 1:2:2:2:2:1, including but not limited to the quantities and air distribution ratios shown in the figure.

[0055] Appendix Figure 2 This is a top view of the air distribution device. From the main view above, the air distribution device is distributed in a T-shape. From the top view, the entire air distribution device is distributed in a rectangular shape, that is, the air distribution device is a symmetrical rectangle in the horizontal direction.

[0056] Appendix Figure 3This is a longitudinal sectional view of the air distribution device, with a flange ring at its bottom through which cooling air enters the guide zone of the air distribution device. Since the upstream air inlet device connected to the inlet flange 11 may exhibit uneven flow, a relatively straight guide zone needs to be designed to promote the straight movement of cooling air along the guide direction and reduce flow deviation. The guide zone includes a relatively straight guide cover 21, a longitudinal guide plate 22, and a transverse guide plate 23. The height H of the guide zone is set according to the flow deviation of the upstream air inlet device. If the upstream air inlet device exhibits severe flow deviation, the value of H needs to be increased accordingly, and vice versa. Typically, considering the guiding effect, the height H is at least 1 / 3 of the length of the inlet flange.

[0057] The cooling air continues upward into the air distribution area. From a longitudinal sectional view, the cooling air gradually diffuses to both sides, preventing a large amount of cooling air from directly entering the nearest air outlet duct. Instead, it is distributed to both sides along the flared plate 31 and the extension plate 32. The flared plate 31 is distributed at 30-50°, and the extension plate 32 is distributed at 10-30°. That is, the air distribution area has at least two T-shaped symmetrical structures with zigzag distributions, or it can be divided into two independent cantilevered asymmetrical structures along the center line. The height h (80-150mm) of the end plate 35 is relatively small, resulting in less cooling airflow in the end plate 35 area. Therefore, the height of the end plate 35 needs to be controlled. Furthermore, if the end plate 35 is too high, turbulent vortices will appear in the newly added lower half of the air distribution area, affecting the airflow distribution, causing some self-consumption, wasting energy, and also affecting the air distribution effect.

[0058] The wind-equalizing area also has side plates and a top plate, which, together with the aforementioned flared plate 31 and extension plate 32, combine to form a relatively complete enclosed area.

[0059] Appendix Figure 4 This is a cross-sectional view of the air distribution device. It can be seen that the width of the guiding area and the air distribution area are the same, with no change in cross-section. The width of the air distribution area is nearly twice the width of the air outlet, which is beneficial for air distribution and does not generate vortex rotation.

[0060] Appendix Figure 5 This is a schematic diagram of the flow field under the uniform airflow effect of the airflow equalization device. Figure 6 This is an isometric view of the air distribution device, which fully shows its shape and flow field distribution, as well as the internal airflow distribution and its function of equalizing and distributing air. Through flow field software simulation and coupled design, this air distribution device can effectively achieve the required air distribution effect.

[0061] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A low resistance and high efficiency air uniforming device for a forced air system, characterized in that: The air inlet part, the air guide part, the air equalization part and the air outlet part are connected; the air outlet part includes multiple air outlets; the air outlets are evenly spaced along the end plate of the air equalization part and symmetrically arranged along the center of the air equalization part.

2. A low resistance and high efficiency air uniforming device for a forced air system as defined in claim 1, wherein: The end of the air inlet part is provided with an air inlet flange; the air inlet flange is arranged along the circumferential position of the air inlet part, and the air inlet flange is in a rectangular structure as a whole.

3. A low resistance high efficiency air uniforming device for a forced air system as defined in Claim 2 wherein: The air guide part is in a straight line structure, and includes an air guide cover, a longitudinal air guide plate and a transverse air guide plate; the air guide cover and the longitudinal air guide plate form a rectangular cavity structure, and the transverse air guide plate is arranged at the center position in the rectangular cavity structure and is perpendicular to the longitudinal air guide plate.

4. A low resistance high efficiency air uniforming device for a forced air system as defined in Claim 3 wherein: The length of the longitudinal air guide plate is the height H of the air guide part, and the height H of the air guide part is at least 1 / 3 of the length of the air inlet flange.

5. A low resistance high efficiency air uniforming device for a forced air system as defined in Claim 4 wherein: The air equalization part includes a flared plate, an extension plate, air equalization side plates, an air equalization top plate and an end plate; one end of the flared plate is connected to the end of the air guide cover, the extension plate is connected to the flared plate, the flared plate is connected to the end plate, the end plate is connected to the air equalization top plate, and the air equalization side plates are arranged at the two side positions of the air equalization part and are respectively connected to the flared plate, the extension plate, the air equalization top plate and the end plate.

6. A low resistance high efficiency air uniforming device for a forced air system as described in claim 5, wherein: The flared plate is arranged at a first included angle with the horizontal plane, and the extension plate is arranged at a second included angle with the horizontal plane; the second included angle is not greater than the first included angle.

7. A low resistance high efficiency air uniforming device for a forced air system as defined in Claim 6 wherein: The first included angle ranges from 30° to 50°, the second included angle ranges from 10° to 30°, and the height h of the end plate ranges from 80 mm to 150 mm.

8. A low resistance high efficiency air uniforming device for a forced air system as defined in Claim 7 wherein: The air outlet part specifically includes a first air outlet, a second air outlet and a third air outlet; the first air outlet, the second air outlet and the third air outlet form a single air outlet end, the single air outlet end is symmetrically arranged along the center of the air equalization top plate, and the first air outlet, the second air outlet and the third air outlet are sequentially arranged from the center to the edge of the air equalization top plate; the first air outlet, the second air outlet and the third air outlet are respectively provided with a first flange, a second flange and a third flange.

9. A low resistance high efficiency air uniforming device for a forced air system as defined in Claim 8 wherein: The first air outlet and the third air outlet are in a linear structure, the second air outlet is in an inverted conical structure, the diameter of the third air outlet is smaller than that of the first air outlet, and the air outlet amounts of the six air outlets on the air equalization top plate are in a ratio of 1:2:2:2:2:

1.

10. A low resistance high efficiency air uniforming device for a forced air system as defined in Claim 9 wherein: The size of the third air outlet is two-thirds of the size of the first air outlet; the width of the air guide part is the same as the width of the air equalization part, and the width of the air equalization part is twice the width of the air outlet part.

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