Spun-bonding method drafting air uniformizing and refrigerating structure
By designing the spunbond stretching air distribution and refrigeration structure and utilizing the gradually decreasing cross-sectional area design of the air distribution hood and air distribution cavity, the problem of uneven heat exchange of the evaporator in the spunbond meltblown nonwoven fabric production equipment was solved, and the uniform distribution of air flow and the improvement of heat exchange efficiency were achieved.
Patent Information
- Application Number
- CN202422892750.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-10-14
- Estimated Expiration
- 2034-11-26
AI Technical Summary
In spunbond meltblown nonwovens production equipment, the heat exchange capacity is insufficient due to the rectangular structure of the air-conditioning box, especially in the corner area of the evaporator, where there is a problem of uneven heat exchange.
A spunbond drafting air distribution and cooling structure is designed. The centrally supplied drafting process air is evenly distributed through the first and second air distribution hoods. The gradually decreasing cross-sectional area design of the first and second air distribution cavities is used to achieve uniform dispersion of the airflow and sufficient heat exchange, thereby improving the heat exchange efficiency of the evaporator.
In a limited space, uniform distribution of airflow and sufficient heat exchange are achieved, which improves the heat exchange efficiency and solves the problem of uneven heat exchange in the evaporator.
Smart Images
Figure CN223433583U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of anti -sticky, specifically is a kind of spunbond method draft wind equalization and refrigeration structure. BACKGROUND
[0002] On the spunbond meltblown method nonwoven fabric production equipment, usually need to have specific temperature requirement to draft process wind, therefore usually adopt water-cooled refrigerator.The refrigeration water produced by refrigerator is pumped into air conditioner box with evaporator structure, and then in air conditioner box, heat exchange is carried out with air by evaporator, to realize the refrigeration of air.
[0003] But in actual production process, because of limited space and evaporator inherent shape factor, air conditioner box is generally designed as cuboid structure, which inevitably exists corner area in the heat exchange process with evaporator, leading to insufficient heat exchange capacity and other problems. UTILITY MODEL CONTENT
[0004] In view of the deficiencies of prior art, the utility model provides a kind of spunbond method draft wind equalization and refrigeration structure, a kind of spunbond method draft wind refrigeration equalization structure is disclosed in the patent, which can rectify the draft process wind supplied centrally to airflow with uniform distribution in the limited space with the minimum energy consumption cost, thereby increasing the speed uniformity of process airflow through evaporator, and improving heat exchange efficiency.
[0005] The technical scheme of the utility model is as follows:
[0006] A kind of spunbond method draft wind equalization and refrigeration structure, including the evaporator for heat exchange, evaporator is provided with first port and second port, including first equalization cover and second equalization cover;
[0007] First equalization cover is internally provided with first equalization cavity, one end of first equalization cover is provided with first connecting port communicated with first equalization cavity, the other end of first equalization cover is provided with first contraction port communicated with first equalization cavity, first connecting port is connected with the first port of evaporator, the cross-sectional area of first equalization cavity gradually decreases from first connecting port to first contraction port direction;
[0008] Second equalization cover is internally provided with second equalization cavity, one end of second equalization cover is provided with second connecting port communicated with second equalization cavity, the other end of second equalization cover is provided with second contraction port communicated with second equalization cavity, second connecting port is connected with the second port of evaporator, the cross-sectional area of second equalization cavity gradually decreases from second connecting port to second contraction port direction.
[0009] In summary, the above technical solution has the following beneficial effects: after the first air balancing hood and the second air balancing hood of the present application are connected to the evaporator, except for the first contraction port and the second contraction port, the rest of the places are sealed and airtight. The drafting process wind of the spunbond equipment enters from the first air balancing hood or the second air balancing hood, and after heat exchange through the evaporator, it goes out from the second air balancing hood or the first air balancing hood. The first air balancing cavity and the second air balancing cavity in the first air balancing hood and the second air balancing hood are both designed to have a smaller cross-sectional area as they are farther away from the evaporator. The design of the balancing cavity can disperse the process wind that is relatively concentrated at the external interface into an even airflow that fills the entire cross-sectional area of the air balancing cavity, thereby achieving sufficient and even heat exchange with the evaporator, thereby improving the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a cross-sectional schematic diagram of a spunbond drafting air distribution and refrigeration structure;
[0011] Figure 2 A schematic diagram of a first air distribution cover of a spunbond drafting air distribution and refrigeration structure;
[0012] Figure 3 A schematic diagram of a second air distribution cover of a spunbond drafting air distribution and refrigeration structure;
[0013] Figure 4 This is a schematic diagram of the first air distribution cavity / second air distribution cavity of a spunbond stretching air distribution and cooling structure.
[0014] Figure markings: 1. evaporator; 2. first port; 3. second port; 10. first air balancing hood; 11. first air balancing cavity; 12. first connecting port; 13. first contraction port; 14. first sub-air balancing hood; 15. first connecting rib; 16. first partition; 20. second air balancing hood; 21. second air balancing cavity; 22. second connecting port; 23. second contraction port; 24. second sub-air balancing hood; 25. second connecting rib; 26. second partition; 30. first joint; 31. first reducing cavity; 32. first reducing port; 33. first external interface; 40. second joint; 41. second reducing cavity; 42. second reducing port; 43. second external interface. DETAILED DESCRIPTION
[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom," "top," "inner," and "outer" refer to directions toward or away from the geometric center of a particular component, respectively.
[0016] like Figure 1-4As shown, a spunbond drafting wind uniformity and refrigeration structure includes an evaporator 1 for heat exchange, the evaporator 1 is provided with a first port 2 and a second port 3, including a first wind uniformity cover 10 and a second wind uniformity cover 20; a first wind uniformity cavity 11 is opened in the first wind uniformity cover 10, one end of the first wind uniformity cover 10 is provided with a first connecting port 12 connected to the first wind uniformity cavity 11, the other end of the first wind uniformity cover 10 is provided with a first contraction port 13 connected to the first wind uniformity cavity 11, the first connecting port 12 is connected to the first port 2 of the evaporator 1, and the first uniformity cover The cross-sectional area of the air cavity 11 gradually decreases from the first connecting port 12 toward the first contraction port 13; a second air equalizing cavity 21 is provided in the second air equalizing hood 20, a second connecting port 22 communicating with the second air equalizing cavity 21 is provided at one end of the second air equalizing hood 20, and a second contraction port 23 communicating with the second air equalizing cavity 21 is provided at the other end of the second air equalizing hood 20, the second connecting port 22 is connected to the second port 3 of the evaporator 1, and the cross-sectional area of the second air equalizing cavity 21 gradually decreases from the second connecting port 22 toward the second contraction port 23.
[0017] After the first air balancing hood 10 and the second air balancing hood 20 of the present application are connected to the evaporator 1, except for the first contraction port 13 and the second contraction port 23, the rest of the places are sealed and airtight. The drafting process wind of the spunbond equipment enters from the first air balancing hood or the second air balancing hood 20, and after heat exchange through the evaporator 1, it goes out from the second air balancing hood 20 or the first air balancing hood 10. The first air balancing cavity 11 and the second air balancing cavity 21 in the first air balancing hood 10 and the second air balancing hood 20 are both designed to have a smaller cross-sectional area as they are farther away from the evaporator 1. The design of the balancing cavity can disperse the process wind that is relatively concentrated at the external interface into an airflow that is uniform and fills the entire cross-sectional area of the air balancing cavity, thereby achieving sufficient and uniform heat exchange with the evaporator 1, thereby improving the heat exchange efficiency.
[0018] Example 1:
[0019] The first uniform air cover 10 is nested with at least one first sub-uniform air cover 14, the size of the first sub-uniform air cover 14 is smaller than the first uniform air cover 10 or the first sub-uniform air cover 14 of the adjacent outer layer, each first sub-uniform air cover 14 is formed with a first sub-uniform air cavity, a first sub-connection port and a first sub-contract port, the cross-sectional area of each first sub-uniform air cavity gradually decreases from the first sub-connection port to the first sub-contract port; the second uniform air cover 20 is nested with at least one second sub-uniform air cover 24, the size of the second sub-uniform air cover 24 is smaller than the second uniform air cover 20 or the second sub-uniform air cover 24 of the adjacent outer layer, each second sub-uniform air cover 24 is formed with a second sub-uniform air cavity, a second sub-connection port and a second sub-contract port, the cross-sectional area of each second sub-uniform air cavity gradually decreases from the second sub-connection port to the second sub-contract port. The uniform air cover in the first embodiment is nested with multiple sub-uniform air covers, any nested structure should be within the protection scope of the present application, through the multiple nested uniform air covers, the air flow can be distributed to different nested layers, so as to achieve the effect of uniform diffusion of air flow, the first sub-uniform air cover 14 and the second sub-uniform air cover 24 have no specific shape requirements, only the positional relationship is nested, and the first sub-uniform air cavity and the second sub-uniform air cavity formed by each one are in the shape of a horn. The center lines of the nested first sub-uniform air cover 14 and the first uniform air cover 10 coincide, and the center lines of the nested second sub-uniform air cover 24 and the second uniform air cover 20 coincide.
[0020] The first uniform air cover 10 and each first sub-uniform air cover 14 are connected by a first connecting rib 15; the second uniform air cover 20 and each second sub-uniform air cover 24 are connected by a second connecting rib 25. The connecting rib can be strip-shaped or planar, which is used to fix the position between each uniform air cover and sub-uniform air cover.
[0021] Embodiment two:
[0022] A plurality of first partitions 16 are arranged in the first uniform air cavity 11, each first partition 16 extends linearly from the first connection port 12 to the first contraction port 13, and separates the first uniform air cavity 11 into at least two first sub-uniform air cavities; each sub-uniform air cavity is formed with a first sub-connection port at the first connection port 12 and a corresponding first sub-contract port at the first contraction port 13, and the area proportion of each first sub-connection port to the first connection port 12 is equal to the area proportion of the corresponding first sub-contract port to the first contraction port 13. If the air flow passes between the single first connection port 12 and the first contraction port 13, the effect of air flow dispersion or aggregation is not enough, in order to make the air flow pass through the first uniform air cavity 11 with uniformity, the first uniform air cavity 11 is divided into different first sub-uniform air cavities by the first partition 16, so that the air flow can pass through the first uniform air cavity 11 into the evaporator 1 more uniformly.
[0023] A plurality of second partitions 26 are provided in the second air balancing chamber 21. Each second partition 26 extends straight from the second connecting port 22 toward the second constriction port 23, and divides the second air balancing chamber 21 into at least two second sub-air balancing chambers. Each sub-air balancing chamber has a second sub-connecting port formed at the second connecting port 22, and a corresponding second sub-constriction port formed at the second constriction port 23. The area ratio of each second sub-connecting port to the second connecting port 22 is equal to the area ratio of the corresponding second sub-constriction port to the second constriction port 23. If the airflow passes between a single second connecting port 22 and a second constriction port 23, the effect of airflow dispersion or concentration will not be uniform enough. In order to allow the airflow to pass evenly through the second air balancing chamber 21 with different port diameters, the second partitions 26 are used to divide it into different second sub-air balancing chambers. In this way, the airflow can pass through the second air balancing chamber 21 more evenly and evenly and enter the evaporator 1. This second embodiment limits the internal sub-even wind cavity by area relationship. The first partition 16 and the second partition 26 can separate the structures of the first sub-even wind cover 14 and the second sub-even wind cover 24 in the first embodiment. However, compared with the first embodiment, there are no requirements on the structural shape, and the effect of evenly diffusing the airflow can also be achieved.
[0024] Example 3:
[0025] The first connection port 12 and the second connection port 22 are both rectangular in shape. The first connection port 12 and the first constriction port 13 are similar in shape, and the second connection port 22 and the second constriction port 23 are similar in shape. The first connection port 12 is used to connect to the first port 2 of the evaporator 1, and the second connection port 22 is used to connect to the second port 3 of the evaporator 1. Because the first port 2 and the second port 3 of the evaporator 1 are generally rectangular, the first connection port 12 and the second connection port 22 are also rectangular. The first constriction port 13 and the second constriction port 23 are also rectangular because they are similar.
[0026] A plurality of first partitions 16 are provided in the first air balancing chamber 11. Each first partition 16 extends straight from the first connection port 12 toward the first contraction port 13, and divides the first air balancing chamber 11 into at least two first sub-air balancing chambers. Each sub-air balancing chamber has a first sub-connection port formed at the first connection port 12, and a corresponding first sub-contraction port formed at the first contraction port 13. The shapes of each first sub-connection port and the corresponding first sub-contraction port are similar. If the airflow passes between a single first connection port 12 and a first contraction port 13, the effect of airflow dispersion or aggregation is not uniform enough. In this embodiment, the first partitions 16 are used to divide the airflow into different first sub-air balancing chambers. The shapes of each first sub-connection port and the corresponding first sub-contraction port are similar, so that the airflow can enter the evaporator 1 more evenly after passing through the first air balancing chamber 11.
[0027] A plurality of second baffles 26 are provided in the second air balancing chamber 21. Each second baffle 26 extends straight from the second connection port 22 toward the second constriction port 23, and divides the second air balancing chamber 21 into at least two second sub-air balancing chambers. Each sub-air balancing chamber has a second sub-connection port formed at the second connection port 22, and a corresponding second sub-constriction port formed at the second constriction port 23. The shapes of each second sub-connection port and the corresponding second sub-constriction port are similar. If the airflow passes between a single second connection port 22 and a second constriction port 23, the effect of airflow dispersion or concentration is not uniform enough. In this embodiment, the second baffles 26 are used to divide it into different second sub-air balancing chambers. Each second sub-connection port and the corresponding second sub-constriction port have similar shapes, so that the airflow can enter the evaporator 1 more evenly after passing through the second air balancing chamber 21. The third embodiment is defined based on the first connection port 12 and the first constriction port 13 being similar in shape, and the second connection port 22 and the second constriction port 23 being similar in shape. Its specific structure is not limited, and of course, the nested structure in the first embodiment can be referred to.
[0028] The first sub-connecting ports and the first sub-constricting ports collectively form a centrally symmetrical pattern. The first connecting port 12 and the first constricting port 13, separated by the first partition 16, form a centrally symmetrical pattern. This centrally symmetrical pattern facilitates evenly distributing airflow around the first connecting port 12 and the first constricting port 13, thereby achieving more even airflow distribution.
[0029] The second sub-connecting ports and the second sub-constricting ports together form a centrally symmetrical pattern. The second connecting port 22 and the second constricting port 23 separated by the second partition 26 form a centrally symmetrical pattern. This centrally symmetrical pattern facilitates evenly distributing airflow around the second connecting port 22 and the second constricting port 23, thereby achieving more uniform airflow distribution.
[0030] The first joint 30 and the second joint 40 are further included; the first joint 30 is internally provided with a first variable-diameter cavity 31, one end of the first joint 30 is provided with a first variable-diameter port 32 in communication with the first variable-diameter cavity 31, the other end of the first joint 30 is provided with a first external interface 33 in communication with the first variable-diameter cavity 31, the first variable-diameter port 32 is connected with the first connecting port 12 of the first uniform air cover 10, the first external interface 33 is used for connecting external pipelines, the cross-sectional area of the first variable-diameter cavity 31 gradually decreases from the first variable-diameter port 32 to the first external interface 33; the second joint 40 is internally provided with a second variable-diameter cavity 41, one end of the second joint 40 is provided with a second variable-diameter port 42 in communication with the second variable-diameter cavity 41, the other end of the second joint 40 is provided with a second external interface 43 in communication with the second variable-diameter cavity 41, the second variable-diameter port 42 is connected with the second connecting port 22 of the second uniform air cover 20, the second external interface 43 is used for connecting external pipelines, the cross-sectional area of the second variable-diameter cavity 41 gradually decreases from the second variable-diameter port 42 to the second external interface 43. Because the shapes of the first contraction port 13 and the second contraction port 23 are generally rectangular, in order to connect the pipeline of the air flow, the first joint 30 and the second joint 40 are needed to change the shape of the interface, so that the shape and size of the interface are matched with the external pipeline, generally, the shapes of the first external interface 33 and the second external interface 43 are circular. In addition, the sizes of the two ends of the first joint 30 and the second joint 40 are different, and the first joint 30 and the second joint 40 also have the functions of preliminarily dispersing and gathering the air flow, which is equivalent to extending the channel of the air flow, so that the thickness of the air flow channel changes more gently, thereby making the air flow pass through the first uniform air cover 10 and the second uniform air cover 20 more uniformly, and reducing the local loss. Preferably, the first external interface 33 and the second external interface 43 are circular. Because the external air flow pipeline is generally circular, if the first interface and the second interface are of other shapes, the first interface and the second interface can also be made into corresponding shapes.
[0031] A plurality of evaporators 1 are arranged in series.
[0032] The preferred embodiments of the present application are described above, the protection scope of the present application is not limited to the above-mentioned embodiments, any technical scheme falling within the concept of the present application belongs to the protection scope of the present application. It should be noted that, for ordinary skilled in the art, some improvements and decorations without departing from the principle of the present application can also be considered as the protection scope of the present application.
Claims
1. A spunbond drafting air distribution and refrigeration structure, comprising an evaporator (1) for heat exchange, wherein the evaporator (1) is provided with a first port (2) and a second port (3), characterized in that: It comprises a first air balancing cover (10) and a second air balancing cover (20); A first air balancing chamber (11) is provided in the first air balancing hood (10); a first connecting port (12) communicating with the first air balancing chamber (11) is provided at one end of the first air balancing hood (10); a first contraction port (13) communicating with the first air balancing chamber (11) is provided at the other end of the first air balancing hood (10); the first connecting port (12) is connected to the first port (2) of the evaporator (1); and a cross-sectional area of the first air balancing chamber (11) gradually decreases from the first connecting port (12) toward the first contraction port (13); A second air balancing chamber (21) is provided in the second air balancing hood (20); a second connecting port (22) communicating with the second air balancing chamber (21) is provided at one end of the second air balancing hood (20); a second contraction port (23) communicating with the second air balancing chamber (21) is provided at the other end of the second air balancing hood (20); the second connecting port (22) is connected to the second port (3) of the evaporator (1); and the cross-sectional area of the second air balancing chamber (21) gradually decreases from the second connecting port (22) toward the second contraction port (23).
2. A spunbond drafting air distribution and refrigeration structure according to claim 1, characterized in that: At least one first sub-air balancing hood (14) is nested layer by layer inside the first air balancing hood (10), the size of the first sub-air balancing hood (14) is smaller than the first air balancing hood (10) or the first sub-air balancing hood (14) of the adjacent outer layer, each of the first sub-air balancing hoods (14) is formed with a first sub-air balancing cavity, a first sub-connecting port and a first sub-contraction port, and the cross-sectional area of each of the first sub-air balancing cavities gradually decreases from the first sub-connecting port toward the first sub-contraction port; At least one second sub-air balancing hood (24) is arranged layer by layer in the second air balancing hood (20), and the size of the second sub-air balancing hood (24) is smaller than the second air balancing hood (20) or the second sub-air balancing hood (24) of the adjacent outer layer. Each of the second sub-air balancing hoods (24) is formed with a second sub-air balancing cavity, a second sub-connecting port, and a second sub-contraction port, and the cross-sectional area of each of the second sub-air balancing cavities gradually decreases from the second sub-connecting port toward the second sub-contraction port.
3. A spunbond drafting air distribution and refrigeration structure according to claim 2, characterized in that: The first air balancing cover (10) and each first sub-air balancing cover (14) are connected via a first connecting rib (15); The second air balancing cover (20) and each second sub-air balancing cover (24) are connected via a second connecting rib (25).
4. The spunbond drafting air distribution and refrigeration structure according to claim 1, characterized in that: The first connecting port (12) and the second connecting port (22) are both rectangular in shape, the first connecting port (12) and the first contraction port (13) are similar in shape, and the second connecting port (22) and the second contraction port (23) are similar in shape.
5. The spunbond drafting air distribution and refrigeration structure according to claim 4, characterized in that: A plurality of first partitions (16) are provided in the first air distribution cavity (11), each of the first partitions (16) extending linearly from the first connecting port (12) toward the first contraction port (13), and dividing the first air distribution cavity (11) into at least two first sub-air distribution cavities; Each of the sub-average air cavities is formed with a first sub-connection port at the first connection port (12), and a corresponding first sub-contraction port is formed at the first contraction port (13), and the shapes of each of the first sub-connection port and the corresponding first sub-contraction port are similar figures.
6. The spunbond drafting air distribution and refrigeration structure according to claim 4, characterized in that: A plurality of second partitions (26) are provided in the second air balancing chamber (21), each of the second partitions (26) extending linearly from the second connecting port (22) toward the second contraction port (23), and dividing the second air balancing chamber (21) into at least two second sub-air balancing chambers; Each of the sub-average air cavities is formed with a second sub-connection port at the second connection port (22), and a corresponding second sub-contraction port is formed at the second contraction port (23), and the shapes of each of the second sub-connection port and the corresponding second sub-contraction port are similar figures.
7. The spunbond drafting air distribution and refrigeration structure according to claim 5, characterized in that: The shape formed by the first sub-connecting openings is a centrally symmetrical figure, and the shape formed by the first sub-contraction openings is a centrally symmetrical figure.
8. The spunbond drafting air distribution and refrigeration structure according to claim 6, characterized in that: The shape formed by the second sub-connecting openings is a centrally symmetrical figure, and the shape formed by the second sub-contraction openings is a centrally symmetrical figure.
9. A spunbond drafting air distribution and refrigeration structure according to any one of claims 1 to 8, characterized in that: Also included are a first connector (30) and a second connector (40); A first diameter-reducing cavity (31) is provided in the first joint (30), a first diameter-reducing port (32) communicating with the first diameter-reducing cavity (31) is provided at one end of the first joint (30), a first external port (33) communicating with the first diameter-reducing cavity (31) is provided at the other end of the first joint (30), the first diameter-reducing port (32) is connected to the first connecting port (12) of the first air balancing hood (10), the first external port (33) is used for connecting to an external pipeline, and the cross-sectional area of the first diameter-reducing cavity (31) gradually decreases from the first diameter-reducing port (32) toward the first external port (33); A second diameter-reducing cavity (41) is provided in the second joint (40), a second diameter-reducing port (42) communicating with the second diameter-reducing cavity (41) is provided at one end of the second joint (40), a second external port (43) communicating with the second diameter-reducing cavity (41) is provided at the other end of the second joint (40), the second diameter-reducing port (42) is connected to the second connecting port (22) of the second air balancing hood (20), the second external port (43) is used to connect to an external pipeline, and the cross-sectional area of the second diameter-reducing cavity (41) gradually decreases from the second diameter-reducing port (42) toward the second external port (43).
10. A spunbond drafting air distribution and refrigeration structure according to any one of claims 1 to 8, characterized in that: A plurality of evaporators (1) are arranged in series.