Diffusion furnace for solar cell

Abstract

The utility model belongs to the technical field of solar cell manufacturing, and particularly relates to a diffusion furnace for solar cells, which comprises a furnace body, a metal door frame and a quartz furnace door are mounted at the port of the furnace body through hinges in a matching manner, a mounting groove is arranged on the inner side of the metal door frame, and the quartz furnace door is arranged in the mounting groove. In order to better disassemble and clean the quartz furnace door in the metal door frame, during installation, the strip-shaped plate is aligned with the sliding hole of the clamping groove, and the strip-shaped plate slides into the clamping groove under the automatic downward sliding operation of the quartz furnace door; the positioning rods on the two sides of the fixing pad are aligned with the positioning holes in the fixing plate to be inserted, tapping movement of the positioning screws is achieved by rotating the rotating screw cylinder, the distance between the quartz furnace door and the metal door frame is gradually reduced, assembling of the quartz furnace door is achieved, and disassembling of the quartz furnace door can be achieved by reversely rotating the rotating screw cylinder. The diffusion furnace door is convenient to replace, clean and maintain, assembly damage is reduced, and safety and integrity of the quartz furnace door are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to solar cell manufacturing technical field, specifically speaking is a kind of diffusion furnace for solar cell. BACKGROUND

[0002] Solar cell is divided into crystalline silicon and amorphous silicon, wherein crystalline silicon cell can be divided into single crystal cell and polycrystalline cell, when cell is diffused, diffusion furnace door needs to be closed tightly, when diffusion furnace is used, furnace door needs to be cleaned and maintained regularly;

[0003] In the prior art, the furnace door of the diffusion furnace for solar cell production disclosed in CN 102261833 A includes a furnace door body for blocking the furnace opening of the diffusion furnace, a door plate block forming a containing space with the furnace door body and quartz insulation cotton filled in the containing space, and the material of the furnace door body and the door plate block is opaque quartz glass, and the furnace door body is provided with a filling port. The present application can effectively block the temperature and infrared rays of the furnace opening, prevent the temperature and infrared rays from directly diffusing to the operator and cause harm to the operator, and improve the safety performance of operation;

[0004] When the diffusion furnace is used, the furnace door needs to be cleaned and maintained regularly, since the furnace door is composed of a metal shell and a quartz furnace door, it is not easy to disassemble and replace, and it is not convenient to clean and maintain during use, and it is not convenient to replace and maintain the quartz furnace door.

[0005] Therefore, the present application provides a diffusion furnace for solar cell. UTILITY MODEL CONTENTS

[0006] To make up for the deficiencies of the prior art, the existing equipment has the problem that when the diffusion furnace is used, the furnace door needs to be cleaned and maintained regularly, since the furnace door is composed of a metal shell and a quartz furnace door, it is not easy to disassemble and replace, and it is not convenient to clean and maintain during use, and it is not convenient to replace and maintain the quartz furnace door, the present application provides a diffusion furnace for solar cell, which can realize portable disassembly, cleaning and replacement of the quartz furnace door.

[0007] The utility model solves the technical scheme that adopts a kind of diffusion furnace for solar cell, including furnace body, the metal door frame of the port of furnace body is equipped with by hinge cooperation;

[0008] Quartz furnace door, the inner side of the metal door frame is provided with mounting groove, and quartz furnace door is arranged in mounting groove;

[0009] Fixed pad, a fixed groove is formed in the center position of one side of the quartz furnace door, and a fixed pad is pasted and fixed in the fixed groove, and a clamping groove is formed in one side of the fixed pad.

[0010] The middle part of the metal door frame is provided with a mounting hole, and a fixing plate is embedded in the mounting hole;

[0011] Rotary cylinder, the middle position of the fixed plate is rotatably installed with a rotary cylinder, and the rotary cylinder is internally provided with an internal thread;

[0012] The bar-shaped plate is slidably clamped in the clamping groove, one side of the bar-shaped plate is connected with a positioning screw rod, and one end of the positioning screw rod is rotatably installed in the rotary cylinder.

[0013] Preferably, one side of the fixed pad is provided with a positioning rod, the inside of the fixed plate is provided with a positioning hole, and the positioning rod is movably inserted into the positioning hole.

[0014] Preferably, the mounting groove of the metal door frame is provided with a clamping strip, a sealing ring is clamped on the clamping strip, and the sealing ring is located between the inner wall of the quartz furnace door and the metal door frame. At the same time, the sealing ring is provided, so that the quartz furnace door and the metal door frame can be avoided from being bumped during assembly, and the quartz furnace door can be better ensured to be complete and stable during installation.

[0015] Preferably, the inner wall of the metal door frame is fixed with a first spring, and the first spring is arranged between the metal door frame and the quartz furnace door. During assembly, the first spring is gradually compressed, and under the rebounding action of the plurality of first springs, the quartz furnace door is prevented from moving, and the quartz furnace door is prevented from being bumped during installation.

[0016] Preferably, a protective cap is fixed on one of the positioning holes on the fixed plate, a second spring is fixed on the inner wall of the protective cap, a movable pad is connected to the second spring, a first electrode and a second electrode are respectively fixed on the opposite surfaces of the movable pad and the protective cap, a warning light is installed on the fixed plate, the first electrode, the second electrode, the warning light and a power supply are connected in series, the positioning rod is in contact with the movable pad, and the second spring is gradually extruded. When the first electrode and the second electrode are in contact, the warning light is electrified and shines, and after the warning light shines, the rotation of the rotary cylinder is stopped. In this way, the quartz furnace door can be installed in place while being prevented from being damaged due to excessive tightening.

[0017] The utility model discloses the beneficial effect lies in:

[0018] The utility model discloses a quartz furnace door is dismantled and cleaned in the metal door frame, in the installation, the sliding sliding hole of bar -shaped board is aligned with the clamping groove, under the automatic slide operation of quartz furnace door, bar -shaped board slides into the clamping groove, the positioning rod of fixed pad both sides is inserted into the positioning hole on fixed plate, realizes the tapping motion of the positioning screw through the rotation of the rotating cylinder, gradually reduces the interval between quartz furnace door and metal door frame, realizes the assembly of quartz furnace door, through the reverse rotation of the rotating cylinder, the dismantling of quartz furnace door can be realized, the replacement and cleaning maintenance of diffusion furnace door are convenient, reduce assembly damage simultaneously, guarantee the safety and integrity of quartz furnace door. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, below will to the embodiment or prior art description needed to use the drawing make a simple introduction, obviously, the drawing in the following description only some embodiments of the utility model, for those skilled in the art, under the premise of not paying the creative labor, still can obtain other drawings according to these drawings.

[0020] Figure 1 It is diffusion furnace overall structure schematic diagram;

[0021] Figure 2 It is diffusion furnace door overall schematic diagram;

[0022] Figure 3 It is diffusion furnace door overall top view schematic diagram;

[0023] Figure 4 It is Figure 3 It is the section structure schematic diagram along A-A;

[0024] Figure 5 It is the warning structure schematic diagram in protective cap;

[0025] Figure 6 It is the positioning screw assembly position structure schematic diagram;

[0026] In the drawing: 1, furnace body, 2, metal door frame, 3, fixed plate, 4, rotating cylinder, 5, door handle, 6, hinge, 7, quartz furnace door, 8, sealing ring, 9, fixed pad, 10, positioning rod, 11, first spring, 12, clamping groove, 13, protective cap, 14, warning light, 15, bar -shaped board, 16, positioning screw, 131, movable pad, 132, second spring, 133, first electrode, 134, second electrode. DETAILED DESCRIPTION

[0027] Clearly, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by the ordinary skilled in the art without making creative labor belong to the scope of protection of the present utility model.

[0028] Please refer to Figures 1-6 As shown in the figure, a kind of solar cell piece diffusion furnace, including furnace body 1, the port of furnace body 1 is equipped with metal door frame 2 by hinge 6 cooperation installation;

[0029] Quartz furnace door 7, the inner side of metal door frame 2 is provided with installation groove, and quartz furnace door 7 is arranged in installation groove;

[0030] Fixed pad 9, the side center position of quartz furnace door 7 is provided with fixed groove, and fixed pad 9 is pasted and fixed in fixed groove, the side of fixed pad 9 is provided with clamping groove 12;

[0031] Fixed plate 3, the middle part of metal door frame 2 is provided with mounting hole, and fixed plate 3 is embedded in mounting hole;

[0032] Rotary cylinder 4, rotary cylinder 4 is rotationally installed in the middle position of fixed plate 3, and the inside of rotary cylinder 4 is provided with internal thread;

[0033] Strip-shaped plate 15, strip-shaped plate 15 is slidably clamped in clamping groove 12, one side of strip-shaped plate 15 is connected with positioning screw 16, and one end of positioning screw 16 is rotationally installed in rotary cylinder 4.

[0034] One side of fixed pad 9 is provided with positioning rod 10, the inside of fixed plate 3 is provided with positioning hole, and positioning rod 10 is movably inserted into positioning hole.

[0035] The installation groove of metal door frame 2 is provided with clamping strip, and sealing ring 8 is clamped on clamping strip, and sealing ring 8 is located between quartz furnace door 7 and the inner wall of metal door frame 2.

[0036] The inner wall of metal door frame 2 is fixed with first spring 11, and first spring 11 is arranged between metal door frame 2 and quartz furnace door 7, when working, diffusion furnace is one of important process equipment of solar cell piece production line front process, when diffusion operation is carried out on cell piece, diffusion furnace door needs to be tightly closed, and diffusion furnace needs to be cleaned and maintained regularly when being used.

[0037] In order to better disassemble and clean the quartz furnace door 7 in the metal door frame 2, the positioning screw 16 is gradually rethreaded under the rotating action of the rotating screw cylinder 4, and the quartz furnace door 7 and the metal door frame 2 can be separated under the expansion action of the first spring 11;

[0038] When the rethreading is completed, the positioning rod 10 on the fixed pad 9 is disengaged from the positioning hole in the fixed plate 3, and the quartz furnace door 7 can be lifted, at which time the strip-shaped plate 15 slides in the clamping groove 12 to realize the separation of the quartz furnace door 7. The disassembled quartz furnace door 7 can be maintained or replaced separately;

[0039] In the installation, the strip-shaped plate 15 is aligned with the sliding sliding hole of the clamping groove 12, and under the automatic sliding operation of the quartz furnace door 7, the strip-shaped plate 15 slides into the clamping groove 12;

[0040] The positioning rod 10 on both sides of the fixed pad 9 is inserted into the positioning hole on the fixed plate 3, and the rethreading movement of the positioning screw 16 is realized by rotating the rotating screw cylinder 4, gradually reducing the gap between the quartz furnace door 7 and the metal door frame 2, and realizing the assembly of the quartz furnace door 7;

[0041] During the assembly process, the first spring 11 is gradually compressed, and under the rebound action of the plurality of first springs 11, the movement of the quartz furnace door 7 is avoided, and the installation bumping of the quartz furnace door 7 is reduced;

[0042] At the same time, the sealing ring 8 is provided, which can avoid the bumping of the quartz furnace door 7 and the metal door frame 2 during assembly, and better ensure the complete and stable installation process of the quartz furnace door 7.

[0043] One of the positioning holes on the fixed plate 3 is fixed with a protective cap 13, the inner wall of the protective cap 13 is fixed with a second spring 132, the second spring 132 is connected with a movable pad 131, and the opposite surfaces of the movable pad 131 and the protective cap 13 are respectively fixed with a first electrode 133 and a second electrode 134.

[0044] The fixed plate 3 is provided with a warning light 14, and the first electrode 133, the second electrode 134, the warning light 14 and the power supply are connected in series;

[0045] When assembling the quartz furnace door 7, in order to ensure the accurate installation position of the quartz furnace door 7, under the cooperation of the positioning rod 10, the installation direction of the quartz furnace door 7 is ensured to be accurate, and when the positioning rod 10 is inserted into the positioning hole in the fixed plate 3 during the installation of the quartz furnace door 7, the distance between the mouth and the metal door frame 2 and the quartz furnace door 7 is reduced, the positioning rod 10 slides in the protective cap 13, the positioning rod 10 contacts the movable pad 131, gradually extruding the second spring 132, when the first electrode 133 and the second electrode 134 contact, the warning light 14 is powered on and flashes, and after the warning light 14 flashes, the rotation of the rotating cylinder 4 is stopped, so that the quartz furnace door 7 can be installed in place while avoiding excessive tightening of the quartz furnace door 7.

[0046] Working principle, when the battery piece is diffused, the diffusion furnace door needs to be tightly closed, and the diffusion furnace needs to be cleaned and maintained regularly during use;

[0047] In order to better disassemble and clean the quartz furnace door 7 in the metal door frame 2, rotate the rotating cylinder 4, and gradually retreat the positioning screw 16 under the rotation of the rotating cylinder 4, and under the expansion of the first spring 11, the quartz furnace door 7 and the metal door frame 2 can be separated;

[0048] When the retreat is completed, the positioning rod 10 on the fixed pad 9 is separated from the positioning hole in the fixed plate 3, and the quartz furnace door 7 can be lifted, at this time the strip-shaped plate 15 slides in the clamping groove 12, and the quartz furnace door 7 is separated, and the disassembled quartz furnace door 7 can be maintained or replaced separately;

[0049] When installing, align the strip-shaped plate 15 with the sliding sliding hole of the clamping groove 12, and under the automatic sliding operation of the quartz furnace door 7, the strip-shaped plate 15 slides into the clamping groove 12;

[0050] Insert the positioning rod 10 on both sides of the fixed pad 9 into the positioning hole on the fixed plate 3, rotate the rotating cylinder 4 to realize the tapping movement of the positioning screw 16, gradually reduce the distance between the quartz furnace door 7 and the metal door frame 2, and realize the assembly of the quartz furnace door 7;

[0051] During assembly, the first spring 11 is gradually compressed, and under the rebounding action of the plurality of first springs 11, the movement of the quartz furnace door 7 is avoided, and the installation bumping of the quartz furnace door 7 is reduced;

[0052] At the same time, the sealing ring 8 is arranged, which can avoid the bumping of the quartz furnace door 7 and the metal door frame 2 during assembly, and better ensure the integrity and stability of the quartz furnace door 7 during installation;

[0053] In the process of assembling the quartz furnace door 7, in order to ensure the installation position of the quartz furnace door 7, under the cooperation of the positioning rod 10, the installation direction of the quartz furnace door 7 is ensured to be accurate, in the process of installing the quartz furnace door 7, when the positioning rod 10 is inserted into the positioning hole in the fixed plate 3, the distance between the mouth and the metal door frame 2 and the quartz furnace door 7 is reduced, the positioning rod 10 slides in the protective cap 13, the positioning rod 10 contacts with the movable pad 131, gradually realizes the extrusion of the second spring 132, when the first electrode 133 and the second electrode 134 contact, the warning lamp 14 is powered on and flashes, after the warning lamp 14 flashes, the rotation of the rotating cylinder 4 is stopped, which can ensure that the quartz furnace door 7 is installed in place, and avoid damage to the quartz furnace door 7 caused by excessive tightening.

[0054] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0055] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A diffusion furnace for solar cell wafers, characterized by: Include: Furnace body (1), the port of the furnace body (1) is equipped with a metal door frame (2) by hinge (6) fitting installation; Quartz furnace door (7), the inner side of the metal door frame (2) is provided with a mounting groove, and the quartz furnace door (7) is arranged in the mounting groove; Fixed pad (9), a fixed groove is formed in the center position of one side of the quartz furnace door (7), and a fixed pad (9) is pasted in the fixed groove, and a clamping groove (12) is formed in one side of the fixed pad (9); Fixed plate (3), the middle part of the metal door frame (2) is provided with a mounting hole, and the fixed plate (3) is embedded in the mounting hole; Rotary cylinder (4), the rotary cylinder (4) is rotatably installed in the middle position of the fixed plate (3), and the rotary cylinder (4) is provided with an internal thread; Strip-shaped plate (15), the strip-shaped plate (15) is slidably clamped in the clamping groove (12), one side of the strip-shaped plate (15) is connected with a positioning screw rod (16), and one end of the positioning screw rod (16) is rotatably installed in the rotary cylinder (4).

2. The diffusion furnace for solar cells according to claim 1, characterized in that: One side of the fixed pad (9) is provided with a positioning rod (10), and the inside of the fixed plate (3) is provided with a positioning hole, and the positioning rod (10) is movably inserted into the positioning hole.

3. The diffusion furnace for solar cells according to claim 1, characterized in that: The mounting groove of the metal door frame (2) is provided with a clamping strip, and a sealing ring (8) is clamped on the clamping strip, and the sealing ring (8) is located between the quartz furnace door (7) and the inner wall of the metal door frame (2).

4. The diffusion furnace for solar cells according to claim 1, characterized in that: The inner wall of the metal door frame (2) is fixed with a first spring (11), and the first spring (11) is arranged between the metal door frame (2) and the quartz furnace door (7).

5. The diffusion furnace for solar cells according to claim 1, characterized in that: One of the positioning holes on the fixed plate (3) is fixed with a protective cap (13), the inner wall of the protective cap (13) is fixed with a second spring (132), the second spring (132) is connected with a movable pad (131), and the opposite surfaces of the movable pad (131) and the protective cap (13) are respectively fixed with a first electrode (133) and a second electrode (134).

6. The diffusion furnace for solar cells according to claim 1, characterized in that: The fixed plate (3) is provided with a warning light (14), the first electrode (133), the second electrode (134), the warning light (14) and the power supply are connected in series.

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