Wiring structure for vacuum heating chamber and vacuum drying and coating equipment

Abstract

The application discloses a wiring structure for a vacuum heating chamber and a vacuum drying and coating equipment, comprising: a vacuum electrode, which is sealed with the chamber cover through a sealing element; an insulating support assembly, the side of which is provided with multiple sockets of a communication wiring slot, and the vacuum electrode is inserted into the wiring slot from the adhering surface of the insulating support assembly and the chamber cover; and a metal wiring assembly, which is arranged in the wiring slot of the insulating support assembly and is electrically connected with the vacuum electrode inserted into the wiring slot. The wiring structure is sealed by installing a sealing flange on the chamber cover, thereby ensuring the sealing effect of the chamber. Meanwhile, the insulating assembly is arranged as a support structure on the inner side of the chamber upper cover and is fixedly connected with the chamber upper cover. Meanwhile, the insulating assembly covers the metal wiring part and the part of the vacuum electrode extending into the chamber, thereby ensuring the mechanical strength of the metal wiring part and the vacuum electrode, and realizing the insulation effect through the insulating assembly.

Description

Technical Field

[0001] This invention relates to the field of solar photovoltaic manufacturing technology, and in particular to a vacuum heating wiring structure and a vacuum drying coating equipment. Background Technology

[0002] In the production of solar photovoltaic glass, the glass sheets, after drying and preheating with coating solution, need to be dried again and the coating solution cured, so that the coating solution changes from liquid to solid on the glass sheet. Solar photovoltaic glass mainly consists of low-iron glass, a back glass, solar cells, film, and metal wires. The solar cells are sealed between the low-iron glass and the back glass using film. To improve the light transmittance and reduce the reflectivity of solar photovoltaic glass, ensuring more light passes through and generating more electricity, a coating process is required. The coating effect directly affects the quality of the solar photovoltaic glass. Commonly used curing coating methods include using a heating device to release heat to dry the glass sheet. However, existing structures on the market have defects in their insulation structure; metal support structures pose a risk of discharge; and non-metallic support structures are easily damaged, damaging the chamber and affecting the coating quality. Summary of the Invention

[0003] In order to solve the technical problem of discharge risk in vacuum chambers where metal support structures are directly used in the prior art, the present invention proposes a wiring structure and vacuum drying coating equipment for vacuum heating chambers.

[0004] The technical solution adopted in this invention is:

[0005] This invention proposes a wiring structure for a vacuum heating chamber, comprising:

[0006] Multiple vacuum electrodes are mounted on a chamber cover and extend into the chamber through the chamber cover. The portion of the vacuum electrode located outside the chamber cover is used to connect to an external power source, and the vacuum electrode is sealed to the chamber cover by a sealing element.

[0007] An insulating support assembly is disposed inside the chamber cover and corresponds one-to-one with the vacuum electrode. The insulating support assembly has a wiring groove inside and multiple sockets connecting the wiring groove on its side. The vacuum electrode is inserted into the wiring groove from the mating surface of the insulating support assembly and the chamber cover.

[0008] A metal wiring assembly is disposed in the wiring groove of the insulating support assembly and is electrically connected to the vacuum electrode inserted into the wiring groove. The end of the heating device is inserted into the socket and electrically connected to the metal wiring assembly.

[0009] The insulating support assembly includes: a first ceramic plate and a second ceramic plate arranged side by side inside the chamber cover; the first ceramic plate has a first groove on the side facing the second ceramic plate and a plurality of the insertion ports on the side facing away from the second ceramic plate; the second ceramic plate covers the first groove and has a second groove extending to the top surface on the side facing the first ceramic plate, and the portion of the vacuum electrode located inside the chamber is inserted into the second groove from the top of the second groove.

[0010] Furthermore, the insulation support assembly also includes a ceramic fixing plate connected to the chamber cover, wherein the first ceramic plate and the second ceramic plate are fixed below the ceramic fixing plate.

[0011] The metal wiring assembly includes: a conductive sheet installed in the second groove and connected to the vacuum electrode; a conductive plate installed in the first groove and electrically connected to the conductive sheet; the conductive plate having a conductive slot opposite each of the sockets; and a conductive set screw installed on the first ceramic plate corresponding to each conductive slot, the conductive set screw being screwed into the slot to press against the wiring terminal of the heating device inserted into the conductive slot through the socket.

[0012] Furthermore, multiple layers of heat insulation plates are provided between the inner side of the chamber cover and the installation position of the heating device.

[0013] Furthermore, the sealing element is a sealing flange installed on the outside of the chamber cover.

[0014] Furthermore, the vacuum electrodes are arranged in pairs, with each pair of vacuum electrodes spaced apart near both sides of the chamber cover, and a heating device is installed between the insulating support components corresponding to each pair of vacuum electrodes.

[0015] Furthermore, it also includes: multiple support plates installed inside the chamber cover to support the heating device, the support plates being positioned close to the insulating support assembly.

[0016] Furthermore, a protective cover is installed on the outside of the chamber cover to cover the vacuum electrode.

[0017] The present invention also proposes a vacuum drying coating device, comprising: a cavity and a chamber cover mounted on the cavity, and the aforementioned wiring structure mounted on the chamber cover.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1. The metal wiring structure and the insulating support structure are designed as separate units. The insulating support structure is installed inside the cavity cover, and the metal wiring structure is placed inside the insulating support structure. This ensures that the material in contact with the cavity cover is insulating, while the material in contact with the heating tube is metal. This guarantees the mechanical strength of the metal and achieves the insulating performance of the ceramic.

[0020] 2. The metal wiring structure is covered by an insulating support structure inside the vacuum chamber. When energized, it can prevent arcing and short circuits at the lead terminals, reduce damage to the chamber, and improve the coating quality.

[0021] 3. A support plate is used to support the heating tube, and conductive set screws are used to fix the wiring terminals at the end of the heating tube, which facilitates the disassembly and installation of the heating device and ensures the quality of conductive contact. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the chamber structure in an embodiment of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the chamber cover in an embodiment of the present invention;

[0025] Figure 3 This is a front view of the chamber cover in an embodiment of the present invention;

[0026] Figure 4 This is a side view of the chamber cover in an embodiment of the present invention;

[0027] Figure 5 for Figure 3 AA section diagram;

[0028] Figure 6 for Figure 3 A magnified view of part B;

[0029] Figure 7 for Figure 5 A magnified view of part C;

[0030] Figure 8 This is a schematic diagram of the structure of the second ceramic plate in an embodiment of the present invention;

[0031] 1. Cavity; 2. Machined part; 3. Carrier plate;

[0032] 4. Chamber cover; 402. First heat insulation plate; 403. Second heat insulation plate;

[0033] 5. Insulation support components;

[0034] 501. Protective cover; 502. Vacuum electrode; 503. Sealing flange; 504. Flange; 505. Ceramic fixing plate; 506. Conductive sheet; 507. Conductive set screw; 508. First ceramic plate; 509. Conductive plate; 510. Second ceramic plate; 511. Support plate; 5101. Second tank; 5081. First tank;

[0035] 6. Heating device; 61. Heating tube; 62. Wiring terminal. Detailed Implementation

[0036] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0037] The principles and structure of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0038] To improve the light transmittance and reduce the reflectivity of solar photovoltaic glass, ensuring more light passes through and generating more electricity, a coating process is required. The coating effect directly impacts the quality of the solar photovoltaic glass. Common curing coating methods include using a heating device to release heat and dry the glass sheet; however, existing structures on the market have limitations: the heating device is inconvenient to disassemble and cannot be independently installed or removed. Insulation structures have defects; metal support structures pose a risk of discharge; and non-metallic support structures are easily damaged, harming the chamber and affecting coating quality. To address these issues, this invention proposes a wiring structure for a vacuum heating chamber and a vacuum drying coating device. This wiring structure ensures a tight seal by installing a sealing flange on the chamber cover to seal the gap between the vacuum electrode and the chamber cover. Simultaneously, an insulating component is fixedly connected to the upper cover of the chamber by placing it inside the upper cover. This insulating component covers the metal wiring portion and the portion of the vacuum electrode extending into the chamber, ensuring the mechanical strength of the metal wiring portion and the vacuum electrode, while also achieving insulation.

[0039] like Figures 1 to 3As shown, this invention proposes a wiring structure for a vacuum heating cavity. A cavity cover 4 is provided on the upper part of the vacuum heating cavity 1. The cavity cover 4 is installed on the cavity 1 to seal the cavity, allowing a vacuum chamber to be formed within it, thus enabling vacuum heating. The wiring structure is installed on the cavity cover 4. Specifically, the wiring structure includes: a vacuum electrode 502, an insulating support assembly 5, and a metal wiring assembly. Multiple pairs of vacuum electrodes 502 are provided on the cavity cover 4. Each pair of vacuum electrodes 502 can be electrically connected to multiple heating devices 6. The vacuum electrodes 502 are installed on the cavity cover 4 and inserted into the cavity 1 through electrode holes on the cavity cover 4. The vacuum electrodes 502 and the cavity cover 4 are sealed by a sealing element. The portion of the vacuum electrode 502 located outside the cavity cover 4 (the upper part of the cavity cover 4 outside the cavity 1 is considered the outer side, and the lower part inside the cavity 1 is considered the inner side) is used to connect to an external power source, while the portion inserted into the cavity cover 4 is used to connect to the metal wiring assembly. An insulating support assembly 5 is fixedly connected to the inner side of the chamber cover 4 and corresponds one-to-one with a vacuum electrode 502, i.e., one insulating support assembly 5 corresponds to one vacuum electrode 502. The insulating support assembly 5 has a wiring groove inside, and multiple sockets connecting to the wiring groove are provided on the side facing the other insulating support assembly 5 in the same pair. The wiring groove leads to the contact surface between the insulating support assembly 5 and the chamber cover 4. When the insulating support assembly 5 is installed on the chamber cover 4, the vacuum electrode 502 is inserted into the wiring groove from the contact surface between the insulating support assembly 5 and the chamber cover 4. A metal wiring assembly is disposed in the wiring groove of the insulating support assembly 5 and is electrically connected to the vacuum electrode 502 inserted into the wiring groove. The metal wiring assembly has multiple conductive slots corresponding to the sockets. The wiring terminal 62 at the end of the heating device 6 is inserted into the socket and then into the conductive slot of the metal wiring assembly, thus electrically connecting the wiring terminal 62 of the heating device 6 to the metal wiring assembly.

[0040] In specific embodiments, such as Figure 3 , 8As shown, the insulating support assembly 5 specifically includes a first ceramic plate 508 and a second ceramic plate 510, which are arranged side by side on the inner side of the chamber cover 4, i.e., below the chamber cover 4. As shown in the figure, the right side of the first ceramic plate 508 facing the second ceramic plate 510 has a first groove 5081, and the left side facing away from the second ceramic plate 510 has multiple insertion ports that communicate with the first groove 5081, allowing insertion into the first groove 5081. The first groove 5081 is specifically a horizontally rectangular groove. The second ceramic plate 510 is arranged side by side with the first ceramic plate 508 on the right side and is attached to the first ceramic plate 508, covering the first groove 5081. The second groove 5101 is located on the left side of the first ceramic plate 508 and extends to the top surface (i.e. the contact surface with the chamber cover 4). When the insulating support assembly 5 is installed inside the chamber cover 4, the first ceramic plate 508 is installed first, and then the second ceramic plate 510 is installed to enclose the vacuum electrode 502 in the second groove 5101, so as to avoid the vacuum electrode 502 being directly exposed in the vacuum chamber of the cavity.

[0041] In a further embodiment, the insulating support assembly 5 also includes a ceramic fixing plate 505, which is directly connected to the chamber cover 4 and installed on the inner side of the chamber cover 4. The first ceramic plate 508 and the second ceramic plate 510 are installed below the ceramic fixing plate 505. The chamber cover 4 and the two ceramic plates are connected by the ceramic fixing plate 505. At the same time, the ceramic fixing plate 505 also has reserved holes for the vacuum electrode 502 to pass through.

[0042] Preferably, the ceramic fixing plate 505, the two ceramic plates, and the chamber cover 4 are connected by screws. The connection hole positions are not described in detail, as long as a detachable fixed connection can be formed.

[0043] like Figure 5 , 7As shown in Figure 8, the metal wiring assembly includes: a conductive sheet 506, a conductive plate 509, and a conductive set screw 507. The conductive plate 509 is rectangular and has a certain thickness. It is installed in the first groove 5081 of the first ceramic plate 508. The conductive plate 509 has conductive slots corresponding to the number and position of the insertion ports on the first ceramic plate 508. A second ceramic plate 510 is installed to cover the first groove 5081, fixing the position of the conductive sheet 506. The conductive sheet 506 is located in the second groove 5101. The conductive sheet 506 is inverted L-shape. The upper horizontal conductive sheet 506 is fixed between two nuts at the bottom of the vacuum electrode 502, and the lower vertical conductive sheet 506 is connected and fixed to the conductive plate 509 by screws, thus electrically connecting the vacuum electrode 502 to the conductive plate 509. The bottom of the first ceramic plate 508 has multiple through holes, each corresponding to a conductive slot. Simultaneously, the bottom of the conductive plate 509 has a screw hole directly opposite the through holes and connected to the conductive slot. A conductive set screw 507 is installed from the bottom of the first ceramic plate 508 and screwed into the conductive slot through the screw hole to tighten the terminal 62 inserted into the conductive slot, ensuring tight contact between the terminal 62 and the inner wall of the conductive slot, thus guaranteeing electrical connection performance. Because the conductive plate 509 is isolated by two ceramic plates and can only be connected through the socket, arcing between the terminals 62 of the heating device 6 is prevented.

[0044] When it is necessary to disassemble the heating device 6, simply loosen the conductive set screw 507 to pull both ends of the heating device 6 out of the socket of the insulating support assembly 5 for disassembly.

[0045] Specifically, the socket is a vertical waist-shaped hole (not shown in the figure), and the conductive slot is divided into two through slots that are connected vertically. The lower through slot is circular, and the inner wall can be pushed into the conductive set screw 507. The upper through slot is square. After the wiring terminal 62 of the heating device 6 is inserted into the conductive slot, the conductive set screw 507 can be turned to press the wiring terminal 62 into the square through slot at the top of the conductive slot.

[0046] like Figure 3 , 6 As shown, in a specific embodiment, a support plate 511 is provided on the inner side of the chamber cover 4, located between a pair of insulating support components 5. Specifically, a support plate 511 is provided close to each insulating support component 5. The support plate 511 is provided with a reserved hole or transverse groove through which the heating device 6 passes, so that the heating device 6 is supported by the support plate 511 near both ends.

[0047] like Figure 1As shown, in a specific embodiment, the inner side of the chamber cover 4 is further provided with multiple layers of heat insulation plates, specifically two spaced and parallel layers of first heat insulation plate 402 and second heat insulation plate 403, located between the inner side of the chamber cover 4 and the heating device 6. The first heat insulation plate 402 is close to the heating device 6 and has a smooth surface, which can reflect heat and improve the heating rate; the second heat insulation plate 403 has a rough surface to prevent high temperature damage to the chamber cover 4 and the cavity 1.

[0048] In a specific embodiment, the sealing element is a sealing flange 503 installed on the outside of the chamber cover 4. The sealing flange 503 is fitted onto the vacuum electrode 502, and a sealing ring is also fitted onto the vacuum electrode 502. When the sealing flange 503 is fixedly connected to the chamber cover 4 by screws, the sealing ring is squeezed, so that the gap between the vacuum electrode 502 and the chamber cover 4 is sealed by the deformed sealing ring, thereby ensuring the vacuum environment inside the chamber 1.

[0049] In a specific embodiment, a protective cover 501 covering the vacuum electrode 502 is also installed on the outside of the chamber cover 4. The protective cover 501 is fixed to the chamber cover 4 by a flange 504. The protective cover 501 is set for each vacuum electrode 502 to protect the vacuum electrode 502 and prevent the vacuum electrode 502 from being directly exposed.

[0050] In a specific embodiment, the number of sockets on each insulating support assembly 5 is a multiple of 3, that is, the number of heating devices 6 installed between each pair of insulating support assemblies 5 is a multiple of 3, for example... Figure 4 , 5 The three or six wires shown are to ensure a stable power supply.

[0051] In a specific embodiment, the heating device 6 is an infrared lamp tube, specifically including a heating tube 61 and wiring terminals 62 disposed at both ends of the heating tube 61 for electrically connecting the wiring assembly.

[0052] This invention also proposes a vacuum drying coating device, specifically including a cavity 1, a cavity cover 4 installed above the cavity 1, and a wiring structure disposed on the cavity cover 4. The cavity 1 is a vacuum heating cavity 1, and the workpiece 2 (glass sheet) to be dried and coated is placed on a carrier plate 3 located below the heating device 6 inside. By adopting the above wiring structure and arrangement, the output voltage can be reduced, arcing and short circuits can be avoided, damage to the cavity 1 can be reduced, and the coating quality can be improved.

[0053] It should be noted that the terminology used above is for describing particular embodiments only and is not intended to limit the exemplary embodiments of the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form as well. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0054] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0055] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0056] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0057] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0058] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A wiring structure for a vacuum heating chamber, characterized in that, include: Multiple vacuum electrodes are mounted on a chamber cover and extend into the chamber through the chamber cover. The portion of the vacuum electrode located outside the chamber cover is used to connect to an external power source, and the vacuum electrode is sealed to the chamber cover by a sealing element. An insulating support assembly is disposed inside the chamber cover and corresponds one-to-one with the vacuum electrode. The insulating support assembly has a wiring groove inside and multiple sockets connecting the wiring groove on its side. The vacuum electrode is inserted into the wiring groove from the mating surface of the insulating support assembly and the chamber cover. A metal wiring assembly is disposed in the wiring groove of the insulating support assembly and is electrically connected to the vacuum electrode inserted into the wiring groove. The end of the heating device is inserted into the socket and electrically connected to the metal wiring assembly. The insulating support assembly includes: a first ceramic plate and a second ceramic plate arranged side by side inside the chamber cover; the first ceramic plate has a first groove on the side facing the second ceramic plate and a plurality of the insertion ports on the side facing away from the second ceramic plate; the second ceramic plate covers the first groove and has a second groove extending to the top surface on the side facing the first ceramic plate, and the portion of the vacuum electrode located inside the chamber is inserted into the second groove from the top of the second groove.

2. The wiring structure for a vacuum heating chamber as described in claim 1, characterized in that, The insulating support assembly further includes a ceramic fixing plate connected to the chamber cover, wherein the first ceramic plate and the second ceramic plate are fixed below the ceramic fixing plate.

3. The wiring structure for a vacuum heating chamber as described in claim 1, characterized in that, The metal wiring assembly includes: a conductive sheet installed in the second groove and connected to the vacuum electrode; a conductive plate installed in the first groove and electrically connected to the conductive sheet; the conductive plate having a conductive slot opposite each of the sockets; and a conductive set screw installed on the first ceramic plate corresponding to each conductive slot, the conductive set screw being screwed into the slot and pressing against the wiring terminal of the heating device inserted into the conductive slot through the socket.

4. The wiring structure for a vacuum heating chamber as described in claim 1, characterized in that, The inner side of the chamber cover is provided with multiple layers of heat insulation plates at intervals between the heating device installation position and the inner side of the chamber cover.

5. The wiring structure for a vacuum heating chamber as described in claim 1, characterized in that, The sealing element is a sealing flange installed on the outside of the chamber cover.

6. The wiring structure for a vacuum heating chamber as described in claim 1, characterized in that, The vacuum electrodes are arranged in pairs, with each pair of vacuum electrodes spaced apart near the sides of the chamber cover. A heating device is installed between the insulating support components corresponding to each pair of vacuum electrodes.

7. The wiring structure for a vacuum heating chamber as described in claim 6, characterized in that, Also includes: Multiple support plates are installed inside the chamber cover to support the heating device, and the support plates are positioned close to the insulating support assembly.

8. The wiring structure for a vacuum heating chamber as described in claim 1, characterized in that, A protective cover is also installed on the outside of the chamber cover to cover the vacuum electrode.

9. A vacuum drying coating apparatus, comprising: The cavity and the chamber cover mounted on the cavity are characterized in that they include the wiring structure as described in any one of claims 1 to 8.

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