Tempered glass cooling device and cooling method

Abstract

The tempered glass cooling device comprises a conveying frame (10), an air grid (20) and an air supply pipe (30), the air grid (20) further comprises a plurality of air guide units (200) arranged in a lattice structure, any two adjacent air guide units (200) are attached to each other, more than one air nozzle (21) is arranged in each air guide unit (200), and the air nozzles (21) are arranged in the conveying frame (10). Air outlets of the air guide units (200) are provided with air exhaust windows (201), the air guide units (200) are configured to evenly guide airflow exhausted by the air nozzles (21) to the air exhaust windows (201), the air nozzles (21) in the air guide units (200) blow out cold air, then the cold air passes through the diffuser (23), and the single airflow beam can be evenly dispersed to the airflow beam with the area equal to that of the air exhaust windows (201). And the surface of the glass plate (100) is cooled, so that the cold air flow sprayed by the tuyere (21) uniformly acts on the surface of the glass plate (100).

Description

Technical Field

[0001] The invention belongs to the technical field of glass processing, and in particular relates to a tempered glass cooling device and a cooling method. Background Art

[0002] Tempered glass is a kind of prestressed glass. To improve the strength of glass, chemical or physical methods are usually used to form compressive stress on the glass surface. When the glass is subjected to external force, the surface stress is first offset, thereby improving the bearing capacity and enhancing the glass's own resistance to wind pressure, cold and heat shock, etc. At present, air cooling is commonly used to cool the glass surface, thereby forming compressive stress on the glass surface.

[0003] In order to improve the cooling effect of air on the glass surface, the wind from the wind grille needs to be blown vertically to the glass surface. However, the nozzles on the wind grille are spaced apart, which causes the airflow blowing to the glass surface to have local wind pressure that fluctuates, resulting in uneven cooling and unevenly distributed stress on the glass surface, forming stress spots on the glass surface. Therefore, how to improve the uniformity of wind pressure on the glass surface has become an urgent problem to be solved. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention creatively adopts a tempered glass cooling device and a cooling method to at least partially solve the problems raised in the above background technology.

[0005] The technical solution adopted is as follows: In a first aspect of an embodiment of the present invention, a tempered glass cooling device is proposed, comprising: a conveyor frame configured to carry and convey the glass sheet; A wind grille, comprising a first wind grille and a second wind grille distributed on the lower side of the glass plate; An air supply pipe, the input end of which is connected to an external air supply device, the output end of which is communicated with the wind grille and is used to provide cold air to the wind grille so that the wind grille can respectively guide the cold air to the glass plate from the upper and lower sides; Among them, the wind grille also includes a plurality of wind guide units arranged in a lattice structure, and any two adjacent wind guide units are close to each other, each of the wind guide units is provided with one or more wind nozzles, and the air outlet side of the wind guide unit is provided with an exhaust window, and the wind guide unit is configured to evenly guide the airflow discharged from the wind nozzle to the exhaust window. Furthermore, an air guide plate is provided on the exhaust port side of the air nozzle, and the air guide plate is arranged in an inverted cone structure, and the air guide plate includes a first end connected to the air nozzle port and a second end connected to the exhaust window, and the cross section of the second end is larger than the cross section of the first end; A plurality of diffusers are fixedly disposed on the inner side of the air guide plate, and the diffusers are configured to diffuse the airflow at the first end toward the second end.

[0006] Furthermore, the distance between any two adjacent diffusers increases sequentially from the first end to the second end in the air guide plate.

[0007] Furthermore, the diffuser comprises: A bracket is arranged parallel to the glass plate and fixed on the inner wall of the wind guide plate; Diffuser plates are distributed on the bracket in a matrix; The bracket is constructed as a wire mesh structure and is used to connect each of the diffusion plates, and the plurality of diffusion plates are constructed as a tower structure on the inner side of the air nozzle.

[0008] Furthermore, the diffuser plate is connected to the bracket in a rotational or fixed manner, and the diffuser plate is constructed in the form of a pyramid, an impeller, a sphere or a cylinder.

[0009] Furthermore, the air outlet side of the air guide unit is also provided with an air extraction window, and along the diffusion direction of the outer periphery of the center of the air guide unit, at least one group of the air exhaust windows and an air extraction window surrounded by the outer side of the air exhaust windows are included; It also includes an exhaust pipe, the input end of the exhaust pipe is arranged to be connected to the exhaust window, and the output end of the exhaust pipe is arranged to be connected to an external air exhaust device.

[0010] Furthermore, the plane where the air intake window is located is closer to the glass plate than the plane where the air exhaust window is located.

[0011] Furthermore, the conveying frame includes: A drive shaft, which is connected to an external power device and can be driven to rotate by the power device; A mounting frame is symmetrically fixedly arranged on both sides of the driving shaft along the axis of the driving shaft, and a plurality of mounting frames are equidistantly arranged along the axis of the driving shaft; A support column is configured to be rotatably mounted on the inner side of the mounting frame; Wherein, the supporting column has a first end for supporting the glass plate and a second end for keeping the first end always facing upward, so that when the driving shaft is rotated to any angle, the first end of at least one of the supporting columns on the two symmetrically distributed mounting frames is always in contact with the glass plate, and when the line connecting the two supporting columns is parallel to the glass plate, the conveying frame is in the first position, and when the line connecting the two supporting columns is perpendicular to the glass plate, the conveying frame is in the second position.

[0012] Furthermore, the center of gravity of the supporting column is close to the second end, so that the first end is always above the second end.

[0013] A second aspect of an embodiment of the present invention provides a tempered glass cooling method, using the above-mentioned tempered glass cooling device, comprising the following steps: Step 1, glass conveying: the glass plate heated to the tempering temperature is conveyed to the top of the conveying rack, and the conveying rack conveys the glass plate to the inner side of the air grille; Step 2, cooling treatment: the wind grid blows cold air toward the upper and lower surfaces of the glass plate, and performs rapid treatment and cooling treatment on the glass plate in sequence; In step 2, the conveyor frame supports the glass plate at a second position, and the plurality of air guide units can suck in the airflow rebounded from the surface of the glass plate while blowing cold air toward the surface of the glass plate, so as to reduce the horizontal diffusion range of the airflow on the surface of the glass plate.

[0014] The beneficial effects achieved by the present invention using the above structure are as follows: (1) The wind grille includes a number of air guide units arranged in a lattice structure. After the cold air is blown out from the air nozzle in the air guide unit, it passes through the diffuser and can evenly disperse the single airflow into an airflow beam as large as the exhaust window area, thereby cooling the surface of the glass plate and achieving uniform effect of the cold air flow sprayed from the air nozzle on the surface of the glass plate.

[0015] (2) The closely arranged air guide units directly and evenly apply cold air to the surface of the glass plate. There is no problem of high wind pressure in the nozzle area and low wind pressure in the area between the nozzles. The airflow ejected from the nozzle can be kept uniform on the surface of the glass plate, further reducing the stress spots after the glass is formed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure of a tempered glass cooling device proposed in an embodiment of the present invention; Figure 2 A schematic diagram of the three-dimensional structure of the air guide unit proposed in an embodiment of the present invention; Figure 3 A schematic diagram of the structure of the air outlet / inlet side of the air guide unit proposed in an embodiment of the present invention; Figure 4 A schematic diagram of the internal structure of the air guide unit provided in an embodiment of the present invention; Figure 5 It is a schematic diagram of a partially enlarged structure of a horizontal state of a conveying frame proposed in an embodiment of the present invention; Figure 6 It is a partial enlarged structural schematic diagram of the vertical state of the conveying frame proposed in an embodiment of the present invention; Figure 7 a is a structural schematic diagram of a conveying state in which a conveying frame according to an embodiment of the present invention is rotated to a first angle; Figure 7 b is a structural schematic diagram of a conveying state in which the conveying frame according to an embodiment of the present invention is rotated to a second angle; Figure 7 c is a structural schematic diagram of a conveying state in which the conveying frame according to an embodiment of the present invention is rotated to a third angle; Figure 7 d is a structural schematic diagram of the conveying state when the conveying frame according to an embodiment of the present invention is rotated to the fourth angle.

[0017] Among them, 100, glass plate; 10, conveying frame; 11, driving shaft; 12, mounting frame; 121, movable groove; 13, supporting column; 131, contact part; 132, rotating shaft; 133, counterweight part; 20, wind grille; 200, air guide unit; 201, exhaust window; 202, exhaust window; 20a, first wind grille; 20b, second wind grille; 21, wind nozzle; 22, air guide plate; 23, diffuser; 231, bracket; 232, diffuser plate; 30, air supply duct; 40, exhaust duct.

[0018] The accompanying drawings are used to provide further understanding of the embodiments and constitute a part of the specification. They are used for explanation together with the embodiments and do not constitute a limitation of the embodiments. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection.

[0020] In the description of the embodiments, it should be understood that terms such as "up", "down", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the embodiments.

[0021] In order to obtain more air volume in the direction perpendicular to the glass surface, the air nozzles of the wind grid are generally arranged compactly, but the coverage of the air nozzles is limited. The area covered by the air nozzles presents a high wind pressure, while the area between the air nozzles presents a low wind pressure. Moreover, the airflow on the side with high wind pressure will flow to the direction with low wind pressure after contacting the glass, resulting in poor cooling effect in the area with low wind pressure, resulting in uneven cooling. Therefore, in a first aspect of an embodiment of the present invention, a tempered glass cooling device is provided, which aims to solve the problem of uneven cooling of the glass surface due to uneven wind pressure in the distribution stroke of the air nozzles of the wind grid. The device mainly includes a conveying frame 10, a wind grid 20 and an air supply pipe 30.

[0022] like Figure 1 As shown, the conveyor frame 10 is configured to carry and convey the glass plate 100, the wind grid 20 includes a first wind grid 20a and a second wind grid 20b distributed on the upper and lower sides of the glass plate 100, the input end of the air supply pipe 30 is connected to the external air supply device, and the output end of the air supply pipe 30 is connected to the wind grid 20 and is used to provide cold air to the wind grid 20, so that the first wind grid 20a and the second wind grid 20b can respectively guide the cold air to the glass plate 100 from the upper and lower sides, thereby cooling the upper and lower sides of the glass plate 100.

[0023] Furthermore, in order to allow the cold air flow guided out of the wind grille 20 to be evenly guided to the surface of the glass plate 100, the wind grille 20 also includes a plurality of air guide units 200 arranged in a lattice structure, and any two adjacent air guide units 200 are abutted against each other, each air guide unit 200 is provided with one or more air nozzles 21, and the air outlet side of the air guide unit 200 is provided with an exhaust window 201, and the air guide unit 200 is configured to evenly guide the airflow discharged from the air nozzle 21 to the exhaust window 201.

[0024] like Figure 2 As shown, in some embodiments, the cross-section of the air guide unit 200 is set to be rectangular, so that the air guide units 200 can be arranged compactly. The cross-section shape of the optional air guide unit 200 can also be set to be a regular hexagon, a square, a regular triangle, etc. like Figure 4 As shown, an air guide plate 22 is provided on the exhaust port side of the air nozzle 21 .

[0025] In some embodiments, in order to allow the cold air flow discharged from the air nozzle 21 to completely cover the exhaust window 201, the air guide plate 22 is configured to have an inverted cone structure, and the air guide plate 22 includes a first end connected to the port of the air nozzle 21 and a second end connected to the exhaust window 201, and the cross-section of the second end is larger than the cross-section of the first end, so that the airflow can be diffused to a larger range, thereby increasing the effective range of the cold air discharged by the air nozzle 21.

[0026] Furthermore, in order to enable the cold air flow discharged from the air nozzle 21 to be evenly guided to the exhaust window 201, a plurality of diffusers 23 are fixedly provided on the inner side of the air guide plate 22. The diffusers 23 are configured to diffuse the air flow at the first end to the second end. At the same time, in order to allow the air flow on the inner side of the air guide plate 22 to gradually diffuse to a large range during the process of flowing from the first end (close to the air nozzle 21) to the second end (close to the exhaust window 201), the distance between any two adjacent diffusers 23 increases successively from the first end to the second end in the air guide plate 22. In this way, during the process of the cold air flow flowing from the first end to the second end, it will collide with the diffuser 23 and then diffuse evenly to the surroundings, so that the effective area of ​​the cold air flow will gradually increase after colliding with the diffuser 23 until it is the same as the area of ​​the exhaust window 201.

[0027] In some embodiments, the diffuser 23 includes a bracket 231 and a diffuser plate 232 .

[0028] The bracket 231 is arranged parallel to the glass plate 100 and fixed on the inner wall of the air guide plate 22 , and the diffusion plates 232 are distributed on the bracket 231 in a matrix.

[0029] Furthermore, the bracket 231 is constructed as a wire mesh structure and is used to connect each diffuser plate 232, and multiple diffusers 232 are constructed as a tower structure on the inner side of the air nozzle 21. In this way, the cold air flow can pass through the bracket 231, diffuse to the surroundings after colliding with the diffuser plate 232, and collide with the diffusers 232 distributed layer by layer in the process of approaching the exhaust window 201. Finally, the single airflow ejected from the air nozzle 21 is evenly dispersed into an airflow beam equal to the area of ​​the exhaust window 201.

[0030] Furthermore, in order to enhance the dispersion effect of the diffuser plate 232 on the air flow beam and ensure that the air flow beam is dispersed evenly, the diffuser plate 232 is connected to the bracket 231 in a rotating or fixed manner, and the diffuser plate 232 is constructed as a pyramid, an impeller body, a sphere or a cylinder; wherein the pyramid and the impeller body can be installed in a rotating manner, while the sphere and the cylinder can be installed in a fixed manner, and the distribution spacing of the pyramid and the impeller body installed in a rotating manner can be larger, and the distribution spacing of the sphere and the cylinder installed in a fixed manner is smaller, so as to enhance the dispersion effect on the air flow.

[0031] In this way, the cold air flow sprayed from the air nozzle 21 can be evenly applied to the surface of the glass plate 100, and there is no problem of strong wind pressure in the area of ​​the air nozzle 21 and low wind pressure in the area between the air nozzles 21. The air flow sprayed from the air nozzle 21 can be made to act evenly on the surface of the glass plate 100, thereby further weakening the occurrence of stress spots after glass forming.

[0032] like Figure 2 and Figure 3As shown, in order to reduce the diffusion of cold air to the surroundings after reaching the surface of the glass plate 100, thereby affecting the subsequent contact between the cold air and the glass plate 100, an exhaust window 202 is further provided on the air outlet side of the air guide unit 200, along the diffusion direction of the outer periphery of the center of the air guide unit 200, including at least one group of exhaust windows 201 and exhaust windows 202 surrounded by the outside of the exhaust windows 201.

[0033] Furthermore, the device also includes an exhaust pipe 40, the input end of the exhaust pipe 40 is arranged to be connected to the exhaust window 202, and the output end of the exhaust pipe 40 is arranged to be connected to an external exhaust device.

[0034] In this way, when working, the air supply device (such as an air compressor) provides cold air to the wind grid 20 through the air supply pipe 30, and the multiple air guide units 200 distributed on the upper and lower sides of the glass plate 100 blow cold air to the glass plate 100 from the upper and lower sides of the glass plate 100 respectively, so as to cool the surface of the glass plate 100. When the airflow reaches the surface of the glass plate 100 and exchanges heat with the glass plate 100, it will be extracted by the exhaust window 202 to reduce the diffusion of the cold air after the heat exchange to the surroundings and affect the subsequent contact and heat exchange between the cold air and the glass plate 100.

[0035] Furthermore, in order to reduce the direct intake of unheated cold air by the exhaust window 202, the plane where the exhaust window 202 is located is closer to the glass plate 100 than the plane where the exhaust window 201 is located. In this way, the cold air exhausted from the exhaust window 201 will flow along the protruding exhaust window 201, and will not be easily sucked into the exhaust window 202 before it contacts the glass plate 100. However, after the cold air contacts the glass plate 100, it will be more easily sucked into the exhaust window 202 during the process of diffusing to the surroundings.

[0036] Since the glass plate 100 is currently conveyed by rollers, which have a large area, the lower wind grille 20 will be affected by the rollers during the upward blowing process, resulting in inconsistent wind pressure and cooling effect in this area. Therefore, improvements are made to the glass plate 100 conveying components to reduce the impact of cold wind.

[0037] like Figure 1 , Figure 5 and Figure 6 As shown, the conveyor frame 10 includes a driving shaft 11 , a mounting frame 12 and a supporting column 13 .

[0038] Among them, the driving shaft 11 is configured to be connected to an external power device and can be driven to rotate by the power device. The mounting frame 12 is symmetrically fixed on both sides of the driving shaft 11 along the axis of the driving shaft 11, and multiple groups are equidistantly arranged along the axial direction of the driving shaft 11. The support column 13 is configured to be rotatably installed on the inner side of the mounting frame 12.

[0039] During operation, the drive shaft 11 is driven by an external power device (motor driven by gears or transmission belts) to rotate, and drives the mounting frames 12 on both sides to rotate around the axis of the drive shaft 11. During the rotation process, Figure 7 As shown in 7a, 7b, 7c and 7d, the two supporting columns 13 alternately support the glass plate 100 to move forward, thereby realizing the conveying process of the glass plate 100.

[0040] Furthermore, the supporting column 13 has a first end for supporting the glass plate 100 and a second end for keeping the first end always facing upward, so that when the driving shaft 11 is rotated to any angle, the first end of at least one supporting column 13 on the two symmetrically distributed mounting frames 12 is always in contact with the glass plate 100, wherein the center of gravity of the supporting column 13 is close to the second end, so that the first end is always above the second end.

[0041] Furthermore, the supporting column 13 includes a contact portion 131, a rotating shaft 132 and a counterweight portion 133, wherein the end of the contact portion 131 is a round head structure, made of a stainless steel core covered with aramid rope, has high high temperature resistance, and can protect the glass plate 100 without scratching the glass plate 100. The rotating shaft 132 is partially rotatably installed in a "U"-shaped movable groove 121 formed on the inner side of the mounting frame 12, and the length of the counterweight portion 133 is relatively long, so that the counterweight portion 133 is always facing downward, and the contact portion 131 is always facing upward. In this way, when the two supporting columns 13 move alternately, it can also be ensured that the contact portion 131 is always in contact with the glass plate 100.

[0042] In some embodiments, Figure 5 and Figure 7 As shown in FIG. 1 , when the line connecting the two support columns 13 is parallel to the glass plate 100, the conveying frame 10 is in the first position. At this time, the mounting frame 12 is parallel to the glass plate 100. When the cold wind from the lower side blows vertically toward the glass plate 100, it will pass through the mounting frame 12. Although it can also reduce the obstruction of the airflow relative to the conveying roller, there is still some obstruction, such as Figure 6 and Figure 7 As shown in c, when the line connecting the two supporting columns 13 is perpendicular to the glass plate 100, the conveying frame 10 is in the second position. At this time, the mounting frame 12 is vertically distributed to the glass plate 100. When the cold wind from the lower side blows vertically to the glass plate 100, it will pass through the mounting frame 12 in the overlapping state. Relative to the mounting frame 12 in the horizontal position, the blocking of the cold wind can be further reduced, and the influence on the cold wind can be ignored.

[0043] A second aspect of an embodiment of the present invention provides a tempered glass cooling method, using the above-mentioned tempered glass cooling device, comprising the following steps: Step 1, glass conveying: The glass plate 100 heated to the tempering temperature is transferred to the top of the conveying frame 10, and the conveying frame 10 conveys the glass plate 100 to the inner side of the wind grid 20. During the conveying process, the drive shaft 11 is driven by an external power device (motor driven by gears or transmission belts) to rotate, and the mounting frames 12 on both sides are driven to rotate around the axis of the drive shaft 11 during the rotation of the drive shaft 11, such as Figure 7 As shown in Figs. 7a, 7b, 7c and 7d, the two supporting columns 13 alternately support the glass plate 100 to move forward, so as to realize the conveying process of the glass plate 100, and when the glass plate 100 is conveyed to the right position, the conveying frame 10 is in the second position, at which time the mounting frame 12 is vertically distributed to the glass plate 100, and when the cold wind from the lower side blows vertically to the glass plate 100, it will pass through the mounting frame 12 in the overlapping state, and the mounting frame 12 in the horizontal position can further reduce the blocking of the cold wind, and the influence on the cold wind can be ignored.

[0044] Step 2, cooling treatment: cold air is blown from the air grille 20 to the upper and lower surfaces of the glass plate 100, and the glass plate 100 is subjected to rapid treatment and cooling treatment in sequence. In the process of cooling the glass plate 100, the air supply device (such as an air compressor) provides cold air gas to the air grille 20 through the air supply pipe 30, and the multiple air guide units 200 distributed on the upper and lower sides of the glass plate 100 blow cold air to the glass plate 100 from the upper and lower sides of the glass plate 100 respectively. After the cold air is blown out from the air nozzle 21, it flows from the first end to the second end on the inner side of the air guide plate 22, passes through the bracket 231 during the flow, and diffuses to the surroundings after colliding with the diffuser plate 232, and collides with the diffuser plates 232 distributed layer by layer in the process of approaching the exhaust window 201. Finally, the single airflow sprayed from the air nozzle 21 is evenly dispersed into an airflow beam with the same area as the exhaust window 201, so as to cool the surface of the glass plate 100. In this way, the cold air flow sprayed from the air nozzle 21 can be evenly applied to the surface of the glass plate 100, and there is no problem of strong wind pressure in the area of ​​the air nozzle 21 and low wind pressure in the area between the air nozzles 21. The air flow sprayed from the air nozzle 21 can be made to act evenly on the surface of the glass plate 100, thereby further weakening the occurrence of stress spots after glass forming. When the air flow reaches the surface of the glass plate 100 and exchanges heat with the glass plate 100, it will be extracted by the exhaust window 202 to reduce the diffusion of the cold air after the heat exchange to the surroundings and the influence of the subsequent contact and heat exchange between the cold air and the glass plate 100, and the horizontal diffusion range of the air flow on the surface of the glass plate 100 can be reduced.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] Although embodiments have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit thereof, and the scope of the embodiments is defined by the appended claims and their equivalents.

[0047] The above description of the implementation mode is not restrictive. The figure shown in the drawings is only one of the implementation modes, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention, they should all fall within the scope of protection.

Claims

1. A tempered glass cooling device, characterized in that: include: A conveying frame (10) configured to carry and convey a glass plate (100); A wind grille (20), comprising a first wind grille (20a) and a second wind grille (20b) respectively arranged on the upper side and the lower side of the glass plate (100); an air supply pipe (30), wherein the input end of the air supply pipe (30) is connected to an external air supply device, and the output end of the air supply pipe (30) is in communication with the wind grille (20) and is used to provide cold air to the wind grille (20), so that the wind grille (20) can respectively guide the cold air from the upper and lower sides to the glass plate (100); The wind grille (20) further comprises a plurality of wind guide units (200) arranged in a lattice structure, and any two adjacent wind guide units (200) are in contact with each other, each wind guide unit (200) is provided with one or more wind nozzles (21), and the wind guide units (200) are provided with exhaust windows (201) on the air outlet sides, and the wind guide units (200) are configured to evenly guide the airflow discharged from the wind nozzles (21) to the exhaust windows (201).

2. The tempered glass cooling device according to claim 1, characterized in that: An air guide plate (22) is provided on the exhaust port side of the air nozzle (21), the air guide plate (22) being arranged in an inverted cone-shaped structure, the air guide plate (22) comprising a first end connected to the port of the air nozzle (21) and a second end connected to the exhaust window (201), the cross section of the second end being larger than the cross section of the first end; A plurality of diffusers (23) are fixedly provided on the inner side of the air guide plate (22), and the diffusers (23) are configured to diffuse the airflow at the first end toward the second end.

3. The tempered glass cooling device according to claim 2, characterized in that: The distance between any two adjacent diffusers (23) increases sequentially from the first end to the second end in the air guide plate (22).

4. The tempered glass cooling device according to claim 2, characterized in that: The diffuser (23) comprises: A bracket (231) is arranged parallel to the glass plate (100) and fixed on the inner wall of the wind guide plate (22); Diffuser plates (232) are distributed on the bracket (231) in a matrix; The support (231) is constructed as a wire mesh structure and is used to connect each of the diffusion plates (232), and the plurality of diffusion plates (232) are constructed as a tower structure on the inner side of the air nozzle (21).

5. The tempered glass cooling device according to claim 4, characterized in that: The diffuser plate (232) is connected to the bracket (231) in a rotational or fixed manner, and the diffuser plate (232) is constructed in the form of a pyramid, an impeller, a sphere or a cylinder.

6. The tempered glass cooling device according to any one of claims 1 to 5, characterized in that: The air outlet side of the air guide unit (200) is also provided with an air extraction window (202), which, along the diffusion direction of the outer periphery of the center of the air guide unit (200), comprises at least one group of the air exhaust windows (201) and an air extraction window (202) surrounding the outer side of the air exhaust windows (201); It also comprises an exhaust pipe (40), wherein the input end of the exhaust pipe (40) is arranged to be in communication with the exhaust window (202), and the output end of the exhaust pipe (40) is arranged to be connected to an external exhaust device.

7. The tempered glass cooling device according to claim 6, characterized in that: The plane where the air intake window (202) is located is closer to the glass plate (100) than the plane where the air exhaust window (201) is located.

8. The tempered glass cooling device according to claim 1, characterized in that: The conveying frame (10) comprises: A drive shaft (11) is arranged to be connected to an external power device and can be driven to rotate by the power device; A mounting frame (12) is symmetrically fixedly arranged on both sides of the driving shaft (11) along the axis of the driving shaft (11), and a plurality of mounting frames are arranged at equal distances along the axis direction of the driving shaft (11); A support column (13) is arranged to be rotatably mounted on the inner side of the mounting frame (12); The support column (13) has a first end for supporting the glass plate (100) and a second end for keeping the first end always facing upward, so that when the driving shaft (11) is rotated to any angle, the first end of at least one of the support columns (13) on the two symmetrically distributed mounting frames (12) is always in contact with the glass plate (100), and when the line connecting the two support columns (13) is parallel to the glass plate (100), the conveying frame (10) is in a first position, and when the line connecting the two support columns (13) is perpendicular to the glass plate (100), the conveying frame (10) is in a second position.

9. The tempered glass cooling device according to claim 8, characterized in that: The center of gravity of the support column (13) is close to the second end, so that the first end is always above the second end.

10. A method for cooling tempered glass, using the tempered glass cooling device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1, glass conveying: the glass plate (100) heated to the tempering temperature is conveyed to the top of the conveying frame (10), and the conveying frame (10) conveys the glass plate (100) to the inner side of the air grille (20); Step 2, cooling treatment: the wind grid (20) blows cold air toward the upper and lower surfaces of the glass plate (100), and performs rapid treatment and cooling treatment on the glass plate (100) in sequence; In step 2, the conveyor frame (10) supports the glass plate (100) at a second position, and the plurality of air guide units (200) can suck in airflow rebounding from the surface of the glass plate (100) while blowing cold air toward the surface of the glass plate (100), so as to reduce the horizontal diffusion range of the airflow on the surface of the glass plate (100).

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