A heat seal space temperature and airflow stability control system

Abstract

The utility model discloses a kind of heat-seal space temperature and airflow stable control system, it is related to vacuum heat-seal equipment technical field, including the shunt plate structure of multiple-stage airflow hole group, and with the heating assembly of this shunt plate space alignment arrangement;The hole group is symmetrically distributed with central turbulence barrier area as reference, and the size of each stage hole group increases with the increase of its distance from suction port, the central turbulence barrier area is the hole closed structure, its projection position is opposite with the air suction hole of molecular pump arrangement.The utility model solves the technical problem that traditional structure temperature and airflow distribution is uneven and particulate matter deposition, process effect is not good, reduce the airflow disturbance and the spatial temperature fluctuation of heating caused by suction, improve process effect, reduce airflow resistance, improve equipment efficiency.

Description

Technical Field

[0001] This utility model relates to the field of vacuum heat sealing equipment technology, specifically to a temperature and airflow stability control system for a heat sealing space. Background Technology

[0002] In high-end manufacturing fields such as precision injection molding and semiconductor packaging, the stability of airflow within the process cavity is a key factor affecting product quality. Traditional manifold designs have significant technical bottlenecks: airflow channels are mostly straight-through structures, which easily generate turbulence and vortices, leading to uneven temperature and airflow distribution and particulate matter deposition. Existing improvements involve adding guide vanes within the channels to improve airflow, but this increases pressure loss and reduces system efficiency. Regarding temperature control, traditional external heating tube designs suffer from thermal response lag, with temperature fluctuations often exceeding ±5°C. Insulation materials are mostly made of ordinary engineering plastics, which are prone to aging and deformation under long-term high-temperature environments. More seriously, existing structures design insulation, heating, and airflow control as independent systems, resulting in bulky equipment, interference between systems, and highly unstable temperature control within the heat-sealing equipment's internal space. Samples are also prone to displacement during evacuation due to airflow. Especially in high-precision injection molding processes, these defects can lead to quality defects such as flow marks and shrinkage, resulting in a high scrap rate. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a stable temperature and airflow control system for heat-sealing space, so as to solve the technical problems of uneven temperature and airflow distribution and particulate matter deposition in traditional structures, resulting in poor process effect. It reduces airflow disturbance and temperature fluctuation in the heated space caused by air extraction, improves process effect, reduces airflow resistance, and improves equipment efficiency.

[0004] To solve the above problems, the technical solution provided by this utility model is as follows:

[0005] A temperature and airflow stability control system for a heat-sealed space includes a flow divider structure with a multi-stage airflow orifice group and a heating component space-aligned with the flow divider. The orifice group is symmetrically distributed with a central turbulence-blocking zone as a reference, and the size of each orifice group increases with the distance between it and the air extraction port. The central turbulence-blocking zone is a non-porous closed structure, and its projected position is directly opposite the air intake port of the molecular pump.

[0006] Its main function is to achieve laminar flow control of airflow in the heat-sealing cavity through the symmetrical distribution and size gradient design of the orifice group, and to optimize the heat conduction path through the alignment of the heating components, thereby solving the problems of uneven temperature and airflow disturbance in traditional equipment.

[0007] Optionally, the hole group is a three-level hole group, which includes a primary hole group located in the central region, a secondary hole group symmetrically distributed on both sides of the primary hole group, and a tertiary hole group located outside the secondary hole group.

[0008] By using a hierarchical perforation layout, the airflow distribution is refined, enhancing the precise control of airflow at the cavity edge and center, and avoiding the vortices caused by traditional straight-through structures.

[0009] Optionally, the aperture size of the primary aperture group is smaller than that of the secondary aperture group, and the aperture size of the secondary aperture group is smaller than that of the tertiary aperture group, forming a gradient-expanded airflow channel structure.

[0010] By actively adjusting the airflow resistance through differences in aperture, the airflow imbalance caused by the distance from the air intake is compensated, thereby optimizing the overall air pressure distribution within the cavity.

[0011] Optionally, the distribution density of the three-level hole group is set in a positive correlation with the heat source intensity of the heating component, forming a temperature-airflow coupling control mechanism.

[0012] Establish a temperature-airflow coupling mechanism to enable airflow distribution to actively adapt to heat source intensity, thereby improving temperature control accuracy and energy efficiency.

[0013] Alternatively, the heating assembly may employ an embedded heating unit, which is aligned horizontally with the hole group of the flow divider and vertically with the sample bearing area.

[0014] To reduce heat loss and improve thermal response speed, alignment settings ensure that heat is transferred directly and evenly to the sample area.

[0015] Optionally, the heating component and the single-layer delamination of the delamination component form an integrated temperature control module, with the heat source and airflow channel having a cooperative layout structure.

[0016] To achieve miniaturization and increased efficiency of the temperature control module, reduce system interference, and improve equipment compactness.

[0017] Optionally, the flow divider and the bottom of the heat-sealed cavity form a multi-layer airflow buffer structure, and the airflow is graded and regulated through the three-dimensional distribution of the layer-drawing components.

[0018] The three-dimensional distribution enables graded regulation of airflow, suppressing turbulence and pressure fluctuations.

[0019] Optionally, a support column structure is also included, which extends through the flow divider hole area and connects to the pressure plate to form a stable sample fixation system.

[0020] It provides mechanical stability, prevents the sample from shifting during the evacuation process, and ensures process repeatability.

[0021] Optionally, the system also includes a door assembly that forms a closed space with the heat-sealed cavity, and the inner surface of the door is provided with an airflow guiding structure that cooperates with the diverter plate.

[0022] Enhance cavity sealing and airflow guidance to further optimize internal airflow distribution.

[0023] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0024] Through the coordinated design of multi-level orifice groups and turbulence-blocking zones, laminar flow control of airflow is achieved, effectively reducing turbulence and vortex generation;

[0025] The spatial alignment of the heating element and the airflow channel improves heat transfer efficiency, and the temperature fluctuation range can be controlled within ±5°C.

[0026] The overall structure is compact, integrating insulation, heating and airflow control functions into a unified space, reducing equipment size and system interference. Attached Figure Description

[0027] Figure 1 A schematic diagram of a heat-sealing structure for a heat-sealing space temperature and airflow stabilization control system proposed in an embodiment of this utility model;

[0028] Figure 2 A schematic diagram of the back structure inside the heat-sealing cavity of a heat-sealing space temperature and airflow stabilization control system proposed for an embodiment of this utility model;

[0029] Figure 3 A front view of the internal structure of a heat-sealing cavity for a heat-sealing space temperature and airflow stabilization control system proposed in an embodiment of this utility model.

[0030] Figure 4 A longitudinal cross-sectional schematic diagram of a temperature and airflow stabilization control system for a heat-sealed space, as proposed in an embodiment of this utility model.

[0031] Figure 5 A cross-sectional schematic diagram of a temperature and airflow stabilization control system for a heat-sealed space, as proposed in an embodiment of this utility model.

[0032] Figure 6 A schematic diagram of the overall structure of a heat sealing device for a heat sealing space temperature and airflow stability control system proposed in an embodiment of this utility model;

[0033] Figure 7 This is a cross-sectional schematic diagram of a heat-sealing device for a heat-sealing space temperature and airflow stability control system, as proposed in an embodiment of the present invention.

[0034] 1. Diverter plate; 101. Primary hole group; 102. Secondary hole group; 103. Tertiary hole group; 104. Turbulence barrier zone; 2. Delamination assembly; 201. Single-layer delamination; 3. Support column; 4. Heating assembly; 5. Sample; 6. Pressure plate; 7. Molecular pump; 701. Suction hole; 8. Door assembly; 9. Heat-sealing cavity. Detailed Implementation

[0035] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments.

[0036] Example 1

[0037] Combined with appendix Figure 1-7 A temperature and airflow stability control system for a heat-sealed space includes a manifold structure with multi-stage airflow orifice groups and a heating component spatially aligned with the manifold. The orifice groups are symmetrically distributed with a central turbulence-blocking zone as a reference, and the size of each orifice group increases with its distance from the exhaust port. The central turbulence-blocking zone is a closed, non-porous structure, and its projected position is directly opposite the suction port of the molecular pump. The system operates based on airflow dynamics and heat conduction principles. The non-porous design of the central turbulence-blocking zone of the manifold prevents airflow short-circuiting, forcing airflow through the peripheral orifice groups. The orifice size increases with distance from the exhaust port, balancing airflow resistance at different locations (smaller orifice diameters closer to the exhaust port to increase resistance, and vice versa). The alignment of the heating component with the orifice groups allows heat generated by the heat source to be directly and uniformly transferred through the airflow channels, reducing thermal hysteresis. Overall, after the airflow is drawn in through the three-stage orifice group, it forms a stable laminar flow under the guidance of the turbulence barrier zone. The heating components adjust the temperature synchronously to achieve synergy between temperature control and airflow stability.

[0038] The pore group is a three-tiered pore group, comprising a primary pore group located in the central region, secondary pore groups symmetrically distributed on both sides of the primary pore group, and a tertiary pore group located outside the secondary pore groups. During operation, the primary pore group is located in the central region, with the secondary and tertiary pore groups expanding symmetrically outwards in sequence. When airflow is drawn in through the molecular pump's suction port, due to the hierarchical distribution of the three-tiered pore group, the airflow first enters through the outer tertiary pore group and then gradually converges towards the central primary pore group, forming a progressive buffer. This design utilizes the principle of fluid continuity to reduce the airflow velocity gradient and minimize turbulence generation. (Appendix) Figure 2 The back structure of the manifold shown intuitively demonstrates the symmetrical arrangement of the orifice group, ensuring the stability of the airflow path.

[0039] The aperture size of the primary aperture group is smaller than that of the secondary aperture group, and the aperture size of the secondary aperture group is smaller than that of the tertiary aperture group, forming a gradient-expanding airflow channel structure. The operating principle is based on Poiseuille's law, where airflow resistance is inversely proportional to the channel size. The primary aperture group is closest to the suction port, and its smaller aperture increases resistance to prevent excessive airflow concentration; the tertiary aperture group is furthest away, and its larger aperture reduces resistance, attracting more airflow to pass through the edges. This gradient design makes the airflow throughout the cavity tend to be balanced, combined with... Figure 4 The longitudinal profile shows the correspondence between pore size changes and airflow path, effectively reducing particulate matter deposition.

[0040] The distribution density of the three-level orifice array is positively correlated with the heat source intensity of the heating element, forming a temperature-airflow coupling control mechanism. During operation, areas with high heat source intensity (such as the central area) have a higher orifice array density to increase airflow and accelerate heat dissipation; areas with low heat source intensity have a lower density to reduce airflow. This is based on the principle of thermal convection, where airflow acts as a heat medium, achieving efficient heat transfer through density adjustment. Figure 5 As shown in the cross-section, the heating element is aligned with the hole group to ensure that the airflow flows directly through the heat source, and the temperature fluctuation range can be controlled within ±5°C.

[0041] The heating component employs an embedded heating unit, horizontally aligned with the orifice group of the flow divider and vertically aligned with the sample-bearing area. The heating component is embedded near the flow divider, and its horizontal alignment with the orifice group allows heat generated by the heat source to be directly conducted through the airflow channel; its vertical alignment with the sample prevents heat loss to non-target areas. This layout shortens the heat transfer path and, based on Fourier's law of thermal conductivity, reduces hysteresis. Figure 4 This demonstrates the alignment between the heating element and the sample, optimizing the temperature stability of the heat sealing process.

[0042] The heating component and the single-layer extraction component form an integrated temperature control module, with the heat source and airflow channel arranged in a coordinated layout. During operation, the heating component and the single-layer extraction component form an integrated module, and the heat source and airflow channel work together. As the airflow passes through the extraction layer, it directly absorbs heat and carries it to the sample area, enhancing heat exchange based on the principle of forced convection. Figure 7 As shown in the cross-section, this integrated design reduces energy loss in traditional standalone systems, shortens temperature control response time, and improves equipment efficiency.

[0043] The flow divider and the bottom of the heat-sealed cavity form a multi-layered airflow buffer structure, achieving graded airflow regulation through the three-dimensional distribution of the extraction components. Multiple extraction layers are formed between the flow divider and the bottom of the cavity; as the airflow passes through each layer, its velocity decreases progressively, converting kinetic energy into pressure energy and reducing vortices. Figure 6As shown in the overall structure, the three-dimensional distribution of the extraction components creates an airflow damping effect, ensuring that the airflow enters the heat-sealing area smoothly and reducing disturbance to the sample.

[0044] It also includes a support column structure that penetrates the manifold orifice area and connects to the pressure plate, forming a stable sample fixation system. During operation, the support column penetrates the manifold orifice area and connects to the pressure plate, forming a rigid fixation system. When airflow is drawn in, the support column counteracts the lateral force of the airflow on the sample through mechanical anchoring. (Appendix) Figure 1 and 4 The display shows the fit between the support column and the pressure plate, ensuring that the sample position remains constant and avoiding quality defects caused by displacement.

[0045] The system also includes a door assembly that forms a closed space with the heat-sealed cavity. The inner surface of the door has an airflow guiding structure that cooperates with a flow divider. This guiding structure on the inner surface of the door, in conjunction with the flow divider, creates a continuous airflow path when the door is closed, reducing edge vortices. Based on aerodynamic principles, this design guides airflow along a preset direction, improving airflow stability. (Appendix) Figure 6 and 7 The integration of the door assembly with the heat-sealed cavity was demonstrated, ensuring efficient operation of the system in a closed state.

[0046] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A temperature and airflow stabilization control system for a heat-sealed space, characterized in that, It includes a flow divider structure with a multi-stage airflow hole group and a heating component spatially aligned with the flow divider; the hole group is symmetrically distributed with the central turbulence barrier zone as the reference, and the size of each stage of the hole group increases with the increase of its distance from the air intake. The central turbulence barrier zone is a non-porous closed structure, and its projected position is directly opposite the air intake of the molecular pump.

2. The temperature and airflow stabilization control system for the heat-sealed space according to claim 1, characterized in that, The hole group is a three-level hole group, which includes a primary hole group located in the central area, a secondary hole group symmetrically distributed on both sides of the primary hole group, and a tertiary hole group located outside the secondary hole group.

3. The temperature and airflow stabilization control system for the heat-sealed space according to claim 2, characterized in that, The aperture size of the first-level aperture group is smaller than that of the second-level aperture group, and the aperture size of the second-level aperture group is smaller than that of the third-level aperture group, forming a gradient-expanding airflow channel structure.

4. The temperature and airflow stabilization control system for the heat-sealed space according to claim 2, characterized in that, The distribution density of the three-level pore group is set in a positive correlation with the heat source intensity of the heating component, forming a temperature-airflow coupling control mechanism.

5. The temperature and airflow stabilization control system for the heat-sealed space according to claim 1, characterized in that, The heating component is an embedded heating unit, which is aligned with the hole group of the flow divider in the horizontal direction and aligned with the sample bearing area in the vertical direction.

6. The temperature and airflow stabilization control system for the heat-sealed space according to claim 5, characterized in that, The heating component and the single-layer extraction component form an integrated temperature control module, and the heat source and airflow channel are arranged in a coordinated layout structure.

7. The temperature and airflow stabilization control system for the heat-sealed space according to claim 1, characterized in that, The flow divider and the bottom of the heat-sealing cavity form a multi-layer airflow buffer structure, and the airflow is graded and regulated through the three-dimensional distribution of the extraction components.

8. The temperature and airflow stabilization control system for the heat-sealed space according to claim 1, characterized in that, It also includes a support column structure that runs through the flow divider hole area and connects to the pressure plate to form a stable sample fixation system.

9. The temperature and airflow stabilization control system for the heat-sealed space according to any one of claims 1 to 8, characterized in that, The system also includes a door assembly that forms a closed space with the heat-sealing cavity, and the inner surface of the door is provided with an airflow guiding structure that cooperates with the diverter plate.

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