WO2019047522A1 - Plate glass convection heating method - Google Patents
Plate glass convection heating method Download PDFInfo
- Publication number
- WO2019047522A1 WO2019047522A1 PCT/CN2018/082665 CN2018082665W WO2019047522A1 WO 2019047522 A1 WO2019047522 A1 WO 2019047522A1 CN 2018082665 W CN2018082665 W CN 2018082665W WO 2019047522 A1 WO2019047522 A1 WO 2019047522A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- glass plate
- high temperature
- temperature fan
- during
- rotation speed
- Prior art date
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/012—Tempering or quenching glass products by heat treatment, e.g. for crystallisation; Heat treatment of glass products before tempering by cooling
Definitions
- the invention belongs to the field of glass processing, and particularly relates to a convection heating method for a glass plate, which is used for controlling the convection heating process of the glass plate in the heating furnace.
- Convection heating is a method of spraying a glass plate with a high-temperature gas to heat the glass plate.
- the advantage is that the heating efficiency is high, especially when heating the low-emission coated glass plate.
- the high temperature fan 3 sprays high temperature gas onto the surface of the glass plate 8 at a certain rotational speed, and at the same time, the glass plate 8 reciprocates in the direction indicated by the arrow on the roller table. It is gradually heated during exercise. As shown in FIG.
- the operation process of the high temperature fan 3 is divided into several heating stages according to the heating time of the glass plate, and the high temperature fan 3 operates at a constant rotational speed in each heating stage, which is only exemplary.
- a rotation speed control mode of the high temperature fan 3 is shown, that is, as the heating time elapses, the rotation speed of the high temperature fan 3 in each of the above heating stages is continuously reduced.
- the deceleration motion is started until the stationary motion continues in the opposite direction.
- the high temperature and high pressure gas are continuously sprayed on the fixed area of the surface of the glass plate, and it is very easy to form hot spots on the glass plate 8.
- the heated glass plate is cooled by tempering, a hot spot is formed. Significant stress spots appear in the area, which seriously affects the finished product quality of tempered glass.
- the object of the present invention is to provide a convection heating method for a glass plate, which is used for controlling the convection heating process of the glass plate in the heating furnace to avoid the formation of hot spots in the heating process of the glass, and effectively reducing the surface of the glass plate after tempering. Stress spots improve the quality of finished products of tempered glass.
- the technical solution adopted by the present invention is: a glass plate convection heating method for controlling the convection heating process of the glass plate in the heating furnace, in the convection heating process, the glass plate is in the heating furnace Reciprocating between the two end points of the moving path on the inner roller path; during a reciprocating cycle, defining the decelerating motion of the glass plate toward the two end points until the stationary and moving away from the two end points is accelerated.
- the reversing process of the glass plate defines that the movement process of the glass plate on the roller table except the reversing process is the operation process of the glass plate; during the operation of the glass plate, the high temperature fan operates at the set rotation speed and runs on the glass plate During the process and/or during the commutation process, the rotational speed of the high temperature fan is lowered, so that when the glass plate is stationary at the end of the motion path, the rotation speed of the high temperature fan is smaller than the average rotation speed of the high temperature fan during the operation of the glass plate.
- the rotation speed of the high temperature fan is lowered, so that the rotation speed of the high temperature fan is smaller than that of the high temperature fan when the glass plate is stationary at the two end points of the moving path.
- the average rotational speed during the operation of the board is 100 mm to 800 mm.
- the rotation speed of the high temperature fan is lowered during the process of 1 second to 8 seconds, so that the rotation speed of the high temperature fan is lower than that of the high temperature fan when the glass plate is stationary at the two end points of the moving path.
- the average rotational speed during operation of the glass sheet is lowered during the process of 1 second to 8 seconds, so that the rotation speed of the high temperature fan is lower than that of the high temperature fan when the glass plate is stationary at the two end points of the moving path.
- the rotational speed of the high temperature fan is adjusted by a frequency converter connected to the high temperature fan.
- the roller is provided with an encoder, and the encoder sends the movement and position information of the glass plate on the roller table to the control unit of the heating furnace, and the control unit sends a signal to the inverter according to the movement and position information of the glass plate. To adjust the rotation speed of the high temperature fan.
- the rotation speed of the high temperature fan is not more than 100 rpm; during the operation of the glass plate, the average rotation speed of the high temperature fan is 100 rpm to 3000 rpm.
- a reciprocating cycle refers to a process in which a glass plate reciprocates between two end points of a moving path, and the glass plate starts from a certain point of the moving path, passes through two end points, and returns to the point again.
- the glass plate When the glass plate is subjected to convection heating by the method of the present invention, the glass is avoided by adjusting and reducing the rotational speed of the high temperature fan before decelerating in the direction of the left end and the right end of the moving path and before stationary.
- the high temperature and high pressure gas are continuously sprayed on the fixed area of the surface of the glass plate, thereby forming hot spots on the glass plate, effectively reducing the stress spots on the surface of the glass plate after tempering, and improving the stress spot.
- the finished product quality of tempered glass When the glass plate is subjected to convection heating by the method of the present invention, the glass is avoided by adjusting and reducing the rotational speed of the high temperature fan before decelerating in the direction of the left end and the right end of the moving path and before stationary.
- Figure 1 is a schematic view showing a state in which the glass plate is at the left end of the roller path in the heating furnace
- Figure 2 is a schematic view showing a state in which the glass plate is at the right end of the roller path in the heating furnace;
- FIG. 3 is a graph showing a rotational speed of a high temperature fan in the prior art
- the glass plate 8 reciprocates between the left end point 7 and the right end point 5; the glass plate 8 is defined to be oriented in the direction of approaching the two end points.
- the process of decelerating motion until the stationary and away from the two end points is accelerated.
- the process of reversing the glass plate 8 defines the operation of the glass plate 8 on the roller table 2 except for the reversing process.
- the high temperature fan 3 operates at a set rotational speed, and the rotational speed of the high temperature blower 3 is lowered during operation of the glass plate 8 and/or during the commutation process so that the glass plate 8 is in the path of motion.
- the rotation speed of the high temperature fan 3 is smaller than the average rotation speed of the high temperature fan 3 during the operation of the glass plate 8.
- the glass plate 8 is at the end of the running process until the glass plate 8 is reversed.
- the rotation speed of the high temperature fan 3 is continuously lowered, so that when the glass plate 8 is stationary at the left end point 7 of the movement path, the rotation speed of the high temperature fan 3 is 30 rpm, 50 rpm, or 100 rpm; 8
- the glass plate 8 is at the end of the running process until the glass plate 8 is continuously reduced during the commutation process.
- the rotational speed of the high temperature blower 3 is such that when the glass plate 8 is stationary at the left end point 7 of the moving path, the rotational speed of the high temperature blower 3 is 30 rpm, 50 rpm, or 100 rpm.
- the high temperature fan 3 continues to operate at the set rotation speed, and the average rotation speed of the high temperature fan 3 during the operation of the glass plate 8 is 2000 rpm.
- the set rotational speed of the high temperature blower 3 during the operation of the glass plate 8 may be a constant value or may vary with time, and is an average rotational speed of 100 rpm to 3000 rpm, but is preferably constant. value.
- the rotation speed of the high-temperature fan 3 is adjusted by the inverter connected thereto; the roller 2 of the heating furnace is provided with an encoder, and the encoder is electrically connected with the control unit of the heating furnace, and when working, coding
- the device sends the movement and position information of the glass plate 8 on the roller table 2 to the control unit of the heating furnace 1.
- the control unit sends a signal to the frequency converter to adjust the rotation speed of the high temperature fan 3 according to the movement and position of the glass plate 8. .
- This embodiment is basically the same as Embodiment 1, except that during the movement of the glass plate 8 to the left end point 7, when the distance from the front end of the glass plate 8 to the left end point 7 of the movement path is 100 mm, at this time, the glass plate 8 During the reversing process, the rotation speed of the high temperature fan 3 is lowered, so that when the glass plate 8 is stationary at the left end point 7 of the movement path, the rotation speed of the high temperature fan 3 is 30 rpm, 50 rpm, or 100 rpm; During the movement of the glass plate to the right end point 5, when the distance between the front end of the glass plate 8 and the right end point 5 of the moving path is 100 mm, at this time, the glass plate 8 is in the process of reversing, and the rotation speed of the high temperature fan 3 is lowered to make the glass When the plate 8 is stationary at the left end point 7 of the movement path, the rotation speed of the high temperature fan 3 is 30 rpm, 50 rpm or 100 rpm. When the glass plate 8
- the glass plate 8 reciprocates between the left end point 7 and the right end point 5; the glass plate 8 is defined to be oriented in the direction of approaching the two end points.
- the process of decelerating motion until the stationary and away from the two end points is accelerated.
- the process of reversing the glass plate 8 defines the operation of the glass plate 8 on the roller table except for the reversing process.
- the high temperature fan 3 operates at a set rotational speed, reducing the rotational speed of the high temperature fan 3 during operation of the glass plate 8 and/or during the commutation, such that the glass plate 8 is stationary at the end of the path of motion At this time, the rotational speed of the high temperature blower 3 is smaller than the average rotational speed of the high temperature blower 3 during the operation of the glass plate 8.
- the glass plate 8 is at the end of the running process until the glass plate 8 is reversing, continuing
- the rotation speed of the high temperature fan 3 is lowered so that the rotation speed of the high temperature fan 3 is 30 rpm, 50 rpm, or 100 rpm when the left end 7 of the movement path is stationary; the glass plate 8 is to the right end.
- the glass plate 8 is at the end of the running process until the glass plate 8 is reversed, and the rotation speed of the high temperature fan 3 is continuously lowered.
- the high-speed fan 3 has a rotational speed of 30 rpm, 50 rpm, or 100 rpm.
- the high temperature fan 3 continues to operate at the set rotation speed, and the average rotation speed of the high temperature fan 3 during the operation of the glass plate 8 is 1000 rpm.
- the rotational speed of the high temperature blower 3 during operation of the glass sheet 8 may be constant or may vary over time, but is preferably constant.
- the rotational speed of the high temperature blower 3 is adjusted by the frequency converter connected thereto, and the control unit sends a signal to the frequency converter in advance according to the movement of the glass plate 8 and the time of reaching the left end point 7 and the right end point 5 The rotational speed of the high temperature blower 3 is adjusted.
- This embodiment is basically the same as Embodiment 3 except that the glass plate 8 is in the process of moving to the left end point 7, and 3 seconds before the front end of the glass plate 8 reaches the left end point 7 of the moving path, at this time, the glass plate 8 is at During the reversing process, the rotation speed of the high temperature fan 3 is lowered, so that the rotation speed of the high temperature fan 3 is 30 rpm, 50 rpm, or 100 rpm when the glass plate 8 is stationary at the left end point 7 of the movement path; During the movement of the plate 8 to the right end point 5, 3 seconds before the front end of the glass plate 8 reaches the right end point 5 of the movement path, at this time, the glass plate 8 is in the process of reversing, reducing the rotation speed of the high temperature fan 3, so that the glass plate 8 When the left end point 7 of the motion path is stationary, the rotational speed of the high temperature blower 3 is 30 rpm, 50 rpm, or 100 rpm.
- the high temperature fan 3 continues to operate at the set rotation speed, and the average rotation speed of the high temperature fan 3 during the operation of the glass plate 8 is 400 rpm.
- the rotational speed of the high temperature blower 3 during the operation of the glass plate 8 may be a constant value or may vary with time, and is an average rotational speed of 100 rpm to 3000 rpm, but is preferably a constant value.
Abstract
A plate glass convection heating method. In a convection heating process, plate glass alternates between two end points of a motion path on a roller bed in a heating furnace. In an alternation cycle, the process by which the glass plate decelerates in a direction approaching the two end points until becoming stationary and then accelerates in a direction away from the two end points is defined as a reversing process of the plate glass, and movement processes of the plate glass on the roller bed other than the reversing process are defined as operational processes of the plate glass. During the operational processes of the plate glass, a high temperature fan operates at a set rotational speed, and the rotational speed of the high temperature fan is decreased during the operational processes and/or during the reversing process of the plate glass, such that when the plate glass rests at the end of the motion path, the rotational speed of the high temperature fan is less than an average rotational speed of the high temperature fan during the operational processes of the plate glass.
Description
本发明属于玻璃加工领域，具体涉及一种玻璃板对流式加热方法，用于玻璃板在加热炉内对流式加热过程的控制。The invention belongs to the field of glass processing, and particularly relates to a convection heating method for a glass plate, which is used for controlling the convection heating process of the glass plate in the heating furnace.
对流式加热是利用高温气体喷射到玻璃板表面从而对玻璃板进行加热的一种方法，其优点是加热效率高，尤其在加热低辐射镀膜玻璃板时具有明显的优势。如图1、图2所示，玻璃板8进入加热炉后，高温风机3以一定的转动速度将高温气体喷射到玻璃板8表面，同时，玻璃板8在辊道上沿箭头所示的方向往复运动过程中逐渐被加热。如图3所示，现有技术中，高温风机3的运行过程是按照玻璃板的加热时间划分为若干加热阶段，在各个加热阶段内高温风机3以恒定的转动速度运行，该图仅示例性地显示出了高温风机3的一种转动速度控制模式，即随着加热时间的推移，高温风机3在上述各个加热阶段的转动速度不断减小。在上述每一个加热阶段，当玻璃板运动到靠近加热炉入炉口的左终点7或出炉口的右终点5位置时，开始作减速运动，直至静止后向相反方向继续运动。当玻璃板处于静止过程中，高温、高压气体持续喷射在玻璃板表面的固定区域，非常容易在玻璃板8上形成热斑，当加热完成的玻璃板进过钢化冷却后必然会在形成热斑的区域出现明显的应力斑，严重影响钢化玻璃的成品质量。Convection heating is a method of spraying a glass plate with a high-temperature gas to heat the glass plate. The advantage is that the heating efficiency is high, especially when heating the low-emission coated glass plate. As shown in Fig. 1 and Fig. 2, after the glass plate 8 enters the heating furnace, the high temperature fan 3 sprays high temperature gas onto the surface of the glass plate 8 at a certain rotational speed, and at the same time, the glass plate 8 reciprocates in the direction indicated by the arrow on the roller table. It is gradually heated during exercise. As shown in FIG. 3, in the prior art, the operation process of the high temperature fan 3 is divided into several heating stages according to the heating time of the glass plate, and the high temperature fan 3 operates at a constant rotational speed in each heating stage, which is only exemplary. A rotation speed control mode of the high temperature fan 3 is shown, that is, as the heating time elapses, the rotation speed of the high temperature fan 3 in each of the above heating stages is continuously reduced. In each of the above heating stages, when the glass sheet is moved to a position near the left end point 7 of the furnace inlet or the right end point 5 of the outlet, the deceleration motion is started until the stationary motion continues in the opposite direction. When the glass plate is in a stationary process, the high temperature and high pressure gas are continuously sprayed on the fixed area of the surface of the glass plate, and it is very easy to form hot spots on the glass plate 8. When the heated glass plate is cooled by tempering, a hot spot is formed. Significant stress spots appear in the area, which seriously affects the finished product quality of tempered glass.
发明内容Summary of the invention
本发明的目的是提供一种玻璃板对流式加热方法，用于玻璃板在加热炉内对流式加热过程的控制，以避免玻璃在加热过程中形成热斑，有效的减少玻璃板钢化后表面的应力斑，提高钢化玻璃的成品质量。The object of the present invention is to provide a convection heating method for a glass plate, which is used for controlling the convection heating process of the glass plate in the heating furnace to avoid the formation of hot spots in the heating process of the glass, and effectively reducing the surface of the glass plate after tempering. Stress spots improve the quality of finished products of tempered glass.
为了解决上述技术问题，本发明所采用的技术方案是：一种玻璃板对流式加热方法，用于玻璃板在加热炉内对流式加热过程的控制，在对流加热过程中，玻璃板在加热炉内辊道上运动路径的两个终点之间做往复运动；在一个往复运动周期内，定义玻璃板向靠近两个终点的方向做减速运动直至静止和远离两个终点的方向做加速运动的过程为玻璃板的换向过程，定义玻璃板在辊道上除换向过程以外的其他运动过程为玻璃板的运行过程；玻璃板在运行过程中，高温风机以设定的转动速度工作，在玻璃板运行过程中和/或换向过程中降低高温风机的转动速度，使得玻璃板在运动路径的终点静止时，高温风机的转动速度小于高温风机在玻璃板运行过程中的平均转动速度。In order to solve the above technical problems, the technical solution adopted by the present invention is: a glass plate convection heating method for controlling the convection heating process of the glass plate in the heating furnace, in the convection heating process, the glass plate is in the heating furnace Reciprocating between the two end points of the moving path on the inner roller path; during a reciprocating cycle, defining the decelerating motion of the glass plate toward the two end points until the stationary and moving away from the two end points is accelerated. The reversing process of the glass plate defines that the movement process of the glass plate on the roller table except the reversing process is the operation process of the glass plate; during the operation of the glass plate, the high temperature fan operates at the set rotation speed and runs on the glass plate During the process and/or during the commutation process, the rotational speed of the high temperature fan is lowered, so that when the glass plate is stationary at the end of the motion path, the rotation speed of the high temperature fan is smaller than the average rotation speed of the high temperature fan during the operation of the glass plate.
进一步的，当玻璃板前端距运动路径的终点的距离为100mm至800mm时，降低高温风机的转动速度，使得玻璃板在运动路径的两个终点静止时，高温风机的转动速度小于高温风机在玻璃板运行过程中的平均转动速度。Further, when the distance between the front end of the glass plate and the end point of the moving path is 100 mm to 800 mm, the rotation speed of the high temperature fan is lowered, so that the rotation speed of the high temperature fan is smaller than that of the high temperature fan when the glass plate is stationary at the two end points of the moving path. The average rotational speed during the operation of the board.
进一步的，当玻璃板前端到达运动路径的终点之前1秒至8秒的过程中，降低高温风机的转动速度，使得玻璃板在运动路径的两个终点静止时，高温风机的转动速度小于高温风机在玻璃板运行过程中的平均转动速度。Further, when the front end of the glass plate reaches the end of the moving path, the rotation speed of the high temperature fan is lowered during the process of 1 second to 8 seconds, so that the rotation speed of the high temperature fan is lower than that of the high temperature fan when the glass plate is stationary at the two end points of the moving path. The average rotational speed during operation of the glass sheet.
进一步的，通过与高温风机连接的变频器调整高温风机的转动速度。Further, the rotational speed of the high temperature fan is adjusted by a frequency converter connected to the high temperature fan.
进一步的，所述辊道上设置有编码器，编码器将玻璃板在辊道上的运动及位置信息发送到加热炉的控制单元，由控制单元根据玻璃板的运动及位置信息，向变频器发送信号以调整高温风机的转动速度。Further, the roller is provided with an encoder, and the encoder sends the movement and position information of the glass plate on the roller table to the control unit of the heating furnace, and the control unit sends a signal to the inverter according to the movement and position information of the glass plate. To adjust the rotation speed of the high temperature fan.
进一步的，玻璃板在运动路径的终点静止时，高温风机的转动速度不大于100转/分钟；玻璃板运行过程中，高温风机的平均转动速度为100转/分钟至3000转/分钟。Further, when the glass plate is stationary at the end of the motion path, the rotation speed of the high temperature fan is not more than 100 rpm; during the operation of the glass plate, the average rotation speed of the high temperature fan is 100 rpm to 3000 rpm.
本发明中，一个往复运动周期是指：玻璃板在运动路径的两个终点之间往复运动过程中，玻璃板从运动路径的某一点出发，先后经过两个终点，再次返回该点的过程。In the present invention, a reciprocating cycle refers to a process in which a glass plate reciprocates between two end points of a moving path, and the glass plate starts from a certain point of the moving path, passes through two end points, and returns to the point again.
与现有技术相比，本发明的有益效果是：Compared with the prior art, the beneficial effects of the present invention are:
在利用本发明的方法对玻璃板进行对流式加热时，当玻璃板向靠近运动路径的左终点和右终点的方向做减速运动并且静止前，通过调整并降低高温风机的转动速度，避免了玻璃板位于左终点或右终点并且静止时，高温、高压气体持续喷射在玻璃板表面的固定区域，从而在玻璃板上形成热斑，有效地减少了玻璃板钢化后表面上的应力斑，提高了钢化玻璃的成品质量。When the glass plate is subjected to convection heating by the method of the present invention, the glass is avoided by adjusting and reducing the rotational speed of the high temperature fan before decelerating in the direction of the left end and the right end of the moving path and before stationary. When the plate is at the left end or the right end and is at rest, the high temperature and high pressure gas are continuously sprayed on the fixed area of the surface of the glass plate, thereby forming hot spots on the glass plate, effectively reducing the stress spots on the surface of the glass plate after tempering, and improving the stress spot. The finished product quality of tempered glass.
图1是玻璃板在加热炉中辊道左终点的状态示意图；Figure 1 is a schematic view showing a state in which the glass plate is at the left end of the roller path in the heating furnace;
图2是玻璃板在加热炉中辊道右终点的状态示意图；Figure 2 is a schematic view showing a state in which the glass plate is at the right end of the roller path in the heating furnace;
图3是现有技术中高温风机的转动速度曲线图；3 is a graph showing a rotational speed of a high temperature fan in the prior art;
图中标记：1、加热炉，2、辊道，3、高温风机，4、出炉口，5、右终点，6、入炉口，7、左终点，8、玻璃板。Marked in the figure: 1, heating furnace, 2, roller, 3, high temperature fan, 4, outlet, 5, right end, 6, into the furnace, 7, left end, 8, glass plate.
下面结合附图，通过具体的实施方式对本发明的技术方案作进一步的说明。The technical solution of the present invention will be further described by way of specific embodiments with reference to the accompanying drawings.
实施例1：Example 1:
一种玻璃板对流式加热方法，用于玻璃板8在加热炉1内对流加热过程的控制，在对流加热 过程中，玻璃板8在加热炉1内辊道2上运动路径的两个终点之间做往复运动，在一个往复运动周期内，如图1、图2所示，玻璃板8在左终点7和右终点5之间做往复运动；定义玻璃板8向靠近两个终点的方向做减速运动直至静止和远离两个终点的方向做加速运动的过程为玻璃板8的换向过程，定义玻璃板8在辊道2上除换向过程以外的其他运动过程为玻璃板8的运行过程；玻璃板8在运行过程中，高温风机3以设定的转动速度工作，在玻璃板8运行过程中和/或换向过程中降低高温风机3的转动速度，使得玻璃板8在运动路径的终点静止时，高温风机3的转动速度小于高温风机3在玻璃板8运行过程中的平均转动速度。A convection heating method for a glass plate for controlling the convection heating process of the glass plate 8 in the heating furnace 1, in the convection heating process, the two end points of the movement path of the glass plate 8 on the roller table 2 in the heating furnace 1 During the reciprocating motion, in a reciprocating cycle, as shown in Figs. 1 and 2, the glass plate 8 reciprocates between the left end point 7 and the right end point 5; the glass plate 8 is defined to be oriented in the direction of approaching the two end points. The process of decelerating motion until the stationary and away from the two end points is accelerated. The process of reversing the glass plate 8 defines the operation of the glass plate 8 on the roller table 2 except for the reversing process. During operation, the high temperature fan 3 operates at a set rotational speed, and the rotational speed of the high temperature blower 3 is lowered during operation of the glass plate 8 and/or during the commutation process so that the glass plate 8 is in the path of motion. When the end point is stationary, the rotation speed of the high temperature fan 3 is smaller than the average rotation speed of the high temperature fan 3 during the operation of the glass plate 8.
优选的，玻璃板8向左终点7运动过程中，在玻璃板8前端距运动路径的左终点7的距离为800mm时，此时，玻璃板8处于运行过程的末端，直至玻璃板8换向过程中，持续降低高温风机3的转动速度，使得玻璃板8在运动路径的左终点7静止时，高温风机3的转动速度为30转/分钟、50转/分钟或100转/分钟；玻璃板8向右终点5运动过程中，在玻璃板8前端距运动路径的右终点5的距离为800mm时，此时，玻璃板8处于运行过程的末端，直至玻璃板8换向过程中，持续降低高温风机3的转动速度，使得玻璃板8在运动路径的左终点7静止时，高温风机3的转动速度为30转/分钟、50转/分钟或100转/分钟。玻璃板8进入运行过程中，高温风机3继续以设定的转动速度工作，保证高温风机3在玻璃板8运行过程中的平均转动速度为2000转/分钟。需要说明的是：高温风机3在玻璃板8运行过程中的设定的转动速度可以为恒定值，也可以随时间变化，为平均转动速度100转/分钟至3000转/分钟，但优选为恒定值。Preferably, during the movement of the glass plate 8 to the left end point 7, when the distance between the front end of the glass plate 8 and the left end point 7 of the moving path is 800 mm, at this time, the glass plate 8 is at the end of the running process until the glass plate 8 is reversed. During the process, the rotation speed of the high temperature fan 3 is continuously lowered, so that when the glass plate 8 is stationary at the left end point 7 of the movement path, the rotation speed of the high temperature fan 3 is 30 rpm, 50 rpm, or 100 rpm; 8 During the movement to the right end point 5, when the distance between the front end of the glass plate 8 and the right end point 5 of the moving path is 800 mm, at this time, the glass plate 8 is at the end of the running process until the glass plate 8 is continuously reduced during the commutation process. The rotational speed of the high temperature blower 3 is such that when the glass plate 8 is stationary at the left end point 7 of the moving path, the rotational speed of the high temperature blower 3 is 30 rpm, 50 rpm, or 100 rpm. When the glass plate 8 enters the operation process, the high temperature fan 3 continues to operate at the set rotation speed, and the average rotation speed of the high temperature fan 3 during the operation of the glass plate 8 is 2000 rpm. It should be noted that the set rotational speed of the high temperature blower 3 during the operation of the glass plate 8 may be a constant value or may vary with time, and is an average rotational speed of 100 rpm to 3000 rpm, but is preferably constant. value.
本实施例中，高温风机3的转动速度通过与之相连接的变频器来调整；加热炉的辊道2上设置有编码器，编码器与加热炉的控制单元电信号连接，工作时，编码器将玻璃板8在辊道2上的运动及位置信息发送到加热炉1的控制单元，由控制单元根据玻璃板8的运动及位置情况，向变频器发送信号以调整高温风机3的转动速度。In this embodiment, the rotation speed of the high-temperature fan 3 is adjusted by the inverter connected thereto; the roller 2 of the heating furnace is provided with an encoder, and the encoder is electrically connected with the control unit of the heating furnace, and when working, coding The device sends the movement and position information of the glass plate 8 on the roller table 2 to the control unit of the heating furnace 1. The control unit sends a signal to the frequency converter to adjust the rotation speed of the high temperature fan 3 according to the movement and position of the glass plate 8. .
实施例2：Example 2:
本实施例与实施例1基本相同，不同之处在于：玻璃板8向左终点7运动过程中，在玻璃板8前端距运动路径的左终点7的距离为100mm时，此时，玻璃板8处于换向过程中，降低高温风机3的转动速度，使得玻璃板8在运动路径的左终点7静止时，高温风机3的转动速度为30转/分钟、50转/分钟或100转/分钟；玻璃板向右终点5运动过程中，在玻璃板8前端距运动路径的右终点5的距离为100mm时，此时，玻璃板8处于换向过程中，降低高温风机3的转动速度，使得玻璃板8在运动路径的左终点7静止时，高温风机3的转动速度为30转/分钟、50转/分钟或100转/分钟。玻璃板8进入运行过程中，高温风机3继续以设定 的转动速度工作，保证高温风机3在玻璃板8运行过程中的平均转动速度为800转/分钟。This embodiment is basically the same as Embodiment 1, except that during the movement of the glass plate 8 to the left end point 7, when the distance from the front end of the glass plate 8 to the left end point 7 of the movement path is 100 mm, at this time, the glass plate 8 During the reversing process, the rotation speed of the high temperature fan 3 is lowered, so that when the glass plate 8 is stationary at the left end point 7 of the movement path, the rotation speed of the high temperature fan 3 is 30 rpm, 50 rpm, or 100 rpm; During the movement of the glass plate to the right end point 5, when the distance between the front end of the glass plate 8 and the right end point 5 of the moving path is 100 mm, at this time, the glass plate 8 is in the process of reversing, and the rotation speed of the high temperature fan 3 is lowered to make the glass When the plate 8 is stationary at the left end point 7 of the movement path, the rotation speed of the high temperature fan 3 is 30 rpm, 50 rpm or 100 rpm. When the glass plate 8 enters the operation process, the high temperature fan 3 continues to operate at the set rotation speed, and the average rotation speed of the high temperature fan 3 during the operation of the glass plate 8 is 800 rpm.
实施例3Example 3
一种玻璃板对流式加热方法，用于玻璃板8在加热炉1内对流加热过程的控制，在对流加热过程中，玻璃板8在加热炉1内辊道2上运动路径的两个终点之间做往复运动，在一个往复运动周期内，如图1、图2所示，玻璃板8在左终点7和右终点5之间做往复运动；定义玻璃板8向靠近两个终点的方向做减速运动直至静止和远离两个终点的方向做加速运动的过程为玻璃板8的换向过程，定义玻璃板8在辊道上除换向过程以外的其他运动过程为玻璃板8的运行过程；玻璃板8在运行过程中，高温风机3以设定的转动速度工作，在玻璃板8运行过程中和/或换向过程中降低高温风机3的转动速度，使得玻璃板8在运动路径的终点静止时，高温风机3的转动速度小于高温风机3在玻璃板8运行过程中的平均转动速度。A convection heating method for a glass plate for controlling the convection heating process of the glass plate 8 in the heating furnace 1, in the convection heating process, the two end points of the movement path of the glass plate 8 on the roller table 2 in the heating furnace 1 During the reciprocating motion, in a reciprocating cycle, as shown in Figs. 1 and 2, the glass plate 8 reciprocates between the left end point 7 and the right end point 5; the glass plate 8 is defined to be oriented in the direction of approaching the two end points. The process of decelerating motion until the stationary and away from the two end points is accelerated. The process of reversing the glass plate 8 defines the operation of the glass plate 8 on the roller table except for the reversing process. During operation of the plate 8, the high temperature fan 3 operates at a set rotational speed, reducing the rotational speed of the high temperature fan 3 during operation of the glass plate 8 and/or during the commutation, such that the glass plate 8 is stationary at the end of the path of motion At this time, the rotational speed of the high temperature blower 3 is smaller than the average rotational speed of the high temperature blower 3 during the operation of the glass plate 8.
玻璃板8向左终点7运动过程中，在玻璃板8前端到达运动路径的左终点7前8秒时，此时，玻璃板8处于运行过程的末端，直至玻璃板8换向过程中，持续降低高温风机3的转动速度，使得玻璃板8在运动路径的左终点7静止时，高温风机3的转动速度为30转/分钟、50转/分钟或100转/分钟；玻璃板8向右终点5运动过程中，在玻璃板8前端到达运动路径的右终点5前8秒时，此时，玻璃板处于运行过程的末端，直至玻璃板8换向过程中，持续降低高温风机3的转动速度，使得玻璃板8在运动路径的左终点7静止时，高温风机3的转动速度为30转/分钟、50转/分钟或100转/分钟。玻璃板8进入运行过程中，高温风机3继续以设定的转动速度工作，保证高温风机3在玻璃板8运行过程中的平均转动速度为1000转/分钟。高温风机3在玻璃板8运行过程中的转动速度可以为恒定值，也可以随时间变化，但优选为恒定值。During the movement of the glass plate 8 to the left end point 7, 8 seconds before the front end of the glass plate 8 reaches the left end point 7 of the movement path, at this time, the glass plate 8 is at the end of the running process until the glass plate 8 is reversing, continuing The rotation speed of the high temperature fan 3 is lowered so that the rotation speed of the high temperature fan 3 is 30 rpm, 50 rpm, or 100 rpm when the left end 7 of the movement path is stationary; the glass plate 8 is to the right end. 5 During the movement, when the front end of the glass plate 8 reaches the right end point 5 of the movement path 8 seconds, at this time, the glass plate is at the end of the running process until the glass plate 8 is reversed, and the rotation speed of the high temperature fan 3 is continuously lowered. When the glass plate 8 is stationary at the left end point 7 of the moving path, the high-speed fan 3 has a rotational speed of 30 rpm, 50 rpm, or 100 rpm. When the glass plate 8 enters the operation process, the high temperature fan 3 continues to operate at the set rotation speed, and the average rotation speed of the high temperature fan 3 during the operation of the glass plate 8 is 1000 rpm. The rotational speed of the high temperature blower 3 during operation of the glass sheet 8 may be constant or may vary over time, but is preferably constant.
本实施例中，高温风机3的转动速度通过与之相连接的变频器来调整，由控制单元根据玻璃板8的运动及到达左终点7和右终点5的时刻，提前向变频器发送信号以调整高温风机3的转动速度。In this embodiment, the rotational speed of the high temperature blower 3 is adjusted by the frequency converter connected thereto, and the control unit sends a signal to the frequency converter in advance according to the movement of the glass plate 8 and the time of reaching the left end point 7 and the right end point 5 The rotational speed of the high temperature blower 3 is adjusted.
实施例4Example 4
本实施例与实施例3基本相同，不同之处在于：玻璃板8向左终点7运动过程中，在玻璃板8前端到达运动路径的左终点7前3秒时，此时，玻璃板8处于换向过程中，降低高温风机3的转动速度，使得玻璃板8在运动路径的左终点7静止时，高温风机3的转动速度为30转/分钟、50转/分钟或100转/分钟；玻璃板8向右终点5运动过程中，在玻璃板8前端到达运动路径的右终点5前3秒时，此时，玻璃板8处于换向过程中，降低高温风机3的转动速度，使得玻璃板8在运动路径的左终点7静止时，高温风机3的转动速度为30转/分钟、50 转/分钟或100转/分钟。玻璃板8进入运行过程中，高温风机3继续以设定的转动速度工作，保证高温风机3在玻璃板8运行过程中的平均转动速度为400转/分钟。高温风机3在玻璃板8运行过程中的转动速度可以为恒定值，也可以随时间变化，为平均转动速度100转/分钟至3000转/分钟，但优选为恒定值。This embodiment is basically the same as Embodiment 3 except that the glass plate 8 is in the process of moving to the left end point 7, and 3 seconds before the front end of the glass plate 8 reaches the left end point 7 of the moving path, at this time, the glass plate 8 is at During the reversing process, the rotation speed of the high temperature fan 3 is lowered, so that the rotation speed of the high temperature fan 3 is 30 rpm, 50 rpm, or 100 rpm when the glass plate 8 is stationary at the left end point 7 of the movement path; During the movement of the plate 8 to the right end point 5, 3 seconds before the front end of the glass plate 8 reaches the right end point 5 of the movement path, at this time, the glass plate 8 is in the process of reversing, reducing the rotation speed of the high temperature fan 3, so that the glass plate 8 When the left end point 7 of the motion path is stationary, the rotational speed of the high temperature blower 3 is 30 rpm, 50 rpm, or 100 rpm. When the glass plate 8 enters the operation process, the high temperature fan 3 continues to operate at the set rotation speed, and the average rotation speed of the high temperature fan 3 during the operation of the glass plate 8 is 400 rpm. The rotational speed of the high temperature blower 3 during the operation of the glass plate 8 may be a constant value or may vary with time, and is an average rotational speed of 100 rpm to 3000 rpm, but is preferably a constant value.
Claims (6)
- 一种玻璃板对流式加热方法，用于玻璃板在加热炉(1)内对流加热过程的控制，其特征在于：在对流加热过程中，玻璃板(8)在加热炉(1)内辊道(2)上运动路径的两个终点之间做往复运动；在一个往复运动周期内，定义玻璃板(8)向靠近两个终点的方向做减速运动直至静止和远离两个终点的方向做加速运动的过程为玻璃板(8)的换向过程，定义玻璃板(8)在辊道(2)上除换向过程以外的其他运动过程为玻璃板(8)的运行过程；玻璃板(8)在运行过程中，高温风机(3)以设定的转动速度工作，在玻璃板(8)运行过程中和/或换向过程中降低高温风机(3)的转动速度，使得玻璃板(8)在运动路径的终点静止时，高温风机(3)的转动速度小于高温风机(3)在玻璃板(8)运行过程中的平均转动速度。A glass plate convection heating method for controlling the convection heating process of a glass plate in a heating furnace (1), characterized in that: in the convection heating process, the glass plate (8) is rolled in the heating furnace (1) (2) Reciprocating between the two end points of the upper motion path; during a reciprocating cycle, the glass plate (8) is defined to decelerate toward the two end points until it is stationary and away from the two end points. The process of movement is the reversing process of the glass plate (8), defining the operation process of the glass plate (8) on the roller table (2) except the reversing process as the operation of the glass plate (8); the glass plate (8) During operation, the high temperature fan (3) operates at a set rotational speed, reducing the rotational speed of the high temperature fan (3) during operation of the glass plate (8) and/or during the commutation process, such that the glass plate (8) When the end of the motion path is stationary, the rotation speed of the high temperature fan (3) is smaller than the average rotation speed of the high temperature fan (3) during the operation of the glass plate (8).
- 根据权利要求1所述的一种玻璃板对流式加热方法，其特征在于：当玻璃板(8)前端距运动路径的终点的距离为100mm至800mm时，降低高温风机(3)的转动速度，使得玻璃板(8)在运动路径的两个终点静止时，高温风机(3)的转动速度小于高温风机(3)在玻璃板(8)运行过程中的平均转动速度。A convection heating method for a glass plate according to claim 1, wherein when the distance between the front end of the glass plate (8) and the end point of the moving path is 100 mm to 800 mm, the rotation speed of the high temperature fan (3) is lowered. When the glass plate (8) is stationary at the two end points of the moving path, the rotation speed of the high temperature fan (3) is smaller than the average rotation speed of the high temperature fan (3) during the operation of the glass plate (8).
- 根据权利要求1所述的一种玻璃板对流式加热方法，其特征在于：当玻璃板(8)前端到达运动路径的终点之前1秒至8秒的过程中，降低高温风机(3)的转动速度，使得玻璃板(8)在运动路径的两个终点静止时，高温风机(3)的转动速度小于高温风机(3)在玻璃板(8)运行过程中的平均转动速度。A convection heating method for a glass plate according to claim 1, wherein the rotation of the high temperature fan (3) is lowered during a process from 1 second to 8 seconds before the front end of the glass plate (8) reaches the end of the moving path. The speed is such that when the glass plate (8) is stationary at the two end points of the moving path, the rotation speed of the high temperature fan (3) is smaller than the average rotation speed of the high temperature fan (3) during the operation of the glass plate (8).
- 根据权利要求1所述的一种玻璃板对流式加热方法，其特征在于：通过与高温风机(3)连接的变频器调整高温风机(3)的转动速度。A convection heating method for a glass plate according to claim 1, characterized in that the rotational speed of the high temperature fan (3) is adjusted by a frequency converter connected to the high temperature fan (3).
- 根据权利要求4所述的一种玻璃板对流式加热方法，其特征在于：所述辊道(2)上设置有编码器，编码器将玻璃板(8)在辊道(2)上的运动及位置信息发送到加热炉(1)的控制单元，由控制单元根据玻璃板(8)的运动及位置信息，向变频器发送信号以调整高温风机(3)的转动速度。A convection heating method for a glass plate according to claim 4, characterized in that the roller table (2) is provided with an encoder, and the encoder moves the glass plate (8) on the roller table (2). And the position information is sent to the control unit of the heating furnace (1), and the control unit sends a signal to the frequency converter to adjust the rotation speed of the high temperature fan (3) according to the movement and position information of the glass plate (8).
- 根据权利要求1所述的一种玻璃板对流式加热方法，其特征在于：玻璃板(8)在运动路径的终点静止时，高温风机(3)的转动速度不大于100转/分钟；玻璃板(8)运行过程中，高温风机(3)的平均转动速度为100转/分钟至3000转/分钟。The convection heating method for a glass plate according to claim 1, characterized in that: when the glass plate (8) is stationary at the end of the moving path, the rotating speed of the high temperature fan (3) is not more than 100 rpm; the glass plate (8) During operation, the average rotating speed of the high temperature fan (3) is 100 rpm to 3000 rpm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710801851.X | 2017-09-07 | ||
| CN201710801851.XA CN107572764A (en) | 2017-09-07 | 2017-09-07 | A kind of glass plate convection type heating means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2019047522A1 true WO2019047522A1 (en) | 2019-03-14 |
Family
ID=61031300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2018/082665 WO2019047522A1 (en) | 2017-09-07 | 2018-04-11 | Plate glass convection heating method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107572764A (en) |
| WO (1) | WO2019047522A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107572764A (en) * | 2017-09-07 | 2018-01-12 | 洛阳兰迪玻璃机器股份有限公司 | A kind of glass plate convection type heating means |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0078135A1 (en) * | 1981-10-23 | 1983-05-04 | McMaster, Harold Ashley | Method of controlling the heating of sheet material in a conveyor furnace |
| CN1802323A (en) * | 2003-06-11 | 2006-07-12 | 玻璃机械设备有限公司 | Method for observing a glass and controlling heating effect in a hardening oven for a glass sheet |
| CN101052594A (en) * | 2004-09-07 | 2007-10-10 | 单玻璃工程公司 | Method and apparatus for heating sheets of glass |
| CN102344242A (en) * | 2011-07-21 | 2012-02-08 | 杭州精工机械有限公司 | Heating furnace with numerical control convective mixed radiation heating mode and heating method |
| EP2141132B1 (en) * | 2008-07-02 | 2012-12-05 | Astero | Furnace |
| CN107572764A (en) * | 2017-09-07 | 2018-01-12 | 洛阳兰迪玻璃机器股份有限公司 | A kind of glass plate convection type heating means |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1843988A (en) * | 2006-04-07 | 2006-10-11 | 无锡市新惠玻璃制品有限责任公司 | Process for preparing physical toughened thin glass |
| CN102503099A (en) * | 2011-10-31 | 2012-06-20 | 中山市格兰特实业有限公司火炬分公司 | Method for tempering 4-6mm low-E (low emissivity) glass |
| CN103319082B (en) * | 2013-06-27 | 2015-09-16 | 长治市晟龙实业有限公司 | The manufacture method of ultra-thin thermal reinforced glass |
| CN103601359A (en) * | 2013-08-14 | 2014-02-26 | 浙江鼎玻自动化设备有限公司 | Method for eliminating wind spots in glass toughening phase |
-
2017
- 2017-09-07 CN CN201710801851.XA patent/CN107572764A/en active Pending
-
2018
- 2018-04-11 WO PCT/CN2018/082665 patent/WO2019047522A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0078135A1 (en) * | 1981-10-23 | 1983-05-04 | McMaster, Harold Ashley | Method of controlling the heating of sheet material in a conveyor furnace |
| CN1802323A (en) * | 2003-06-11 | 2006-07-12 | 玻璃机械设备有限公司 | Method for observing a glass and controlling heating effect in a hardening oven for a glass sheet |
| CN101052594A (en) * | 2004-09-07 | 2007-10-10 | 单玻璃工程公司 | Method and apparatus for heating sheets of glass |
| EP2141132B1 (en) * | 2008-07-02 | 2012-12-05 | Astero | Furnace |
| CN102344242A (en) * | 2011-07-21 | 2012-02-08 | 杭州精工机械有限公司 | Heating furnace with numerical control convective mixed radiation heating mode and heating method |
| CN107572764A (en) * | 2017-09-07 | 2018-01-12 | 洛阳兰迪玻璃机器股份有限公司 | A kind of glass plate convection type heating means |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107572764A (en) | 2018-01-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6056981B2 (en) | HOT PRESS MOLDING COOLING METHOD AND HOT PRESS MOLDING DEVICE | |
| JP6026547B2 (en) | Method and apparatus for positioning a glass sheet for molding | |
| AU2018328874B2 (en) | Plate glass tempering cooling system | |
| CN210314379U (en) | Induction type automatic quenching treatment system | |
| CN109354389B (en) | Spherical glass processing technology | |
| JPS6247820B2 (en) | ||
| CN201785465U (en) | Continuous annealing furnace | |
| WO2019047522A1 (en) | Plate glass convection heating method | |
| CN104526834A (en) | Preheating device for tape of edge bonding machine | |
| TW201544466A (en) | Tempering and cooling system for a tempered glass | |
| CN107502724A (en) | Bolt heat treatment system and method | |
| CN206556413U (en) | A kind of roller kilns fired for pottery | |
| CN204022921U (en) | A kind of Copper-Aluminum compound row annealing annealing furnace | |
| CN109137617B (en) | Coating production device and application method thereof | |
| CN213866341U (en) | On-line rapid cooling device for large-diameter seamless steel pipe | |
| CN211947114U (en) | Metal heat treatment cooling device | |
| CN204058544U (en) | The process furnace of a kind of Copper-Aluminum compound row and pipe | |
| CN209940836U (en) | Cooling air grid for producing toughened glass | |
| CN208776783U (en) | A kind of automatic solid solution production line | |
| CN206959513U (en) | One kind rotation roll-type reciprocating drying device | |
| CN106274020A (en) | A kind of overlay film drying integral machine | |
| CN207872567U (en) | Multistage dual temperature area electromagnetism baker | |
| CN204471649U (en) | The preheatting cabinet of thermoforming machine for plastic products | |
| CN204659045U (en) | A kind of flange fixing installation of bilayer film | |
| CN108212712A (en) | Multistage dual temperature area electromagnetism baker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 18854316 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 18854316 Country of ref document: EP Kind code of ref document: A1 |