Fuse for plate-type ozone generator

Abstract

The utility model discloses a fuse for a plate-type ozone generator, which is applied to the field of circuit protection devices, solves the technical problem that the fuse of the existing plate-type ozone generator is unstable in high-voltage fusing protection effect, and is characterized by comprising a ceramic shell and a fusing fuse arranged in the shell, the high-voltage wiring terminal comprises a ceramic shell and is characterized in that two ends of the ceramic shell are movably sleeved with insulating sleeves, each insulating sleeve comprises a rubber sleeve port and a wire bunching port, the diameter of each wire bunching port is smaller than that of each rubber sleeve port, a through groove is formed in the middle of the ceramic shell, and two ends of each through groove are movably connected with high-voltage wiring terminals. The fusing fuse is connected between the high-voltage wiring terminals, the fusing fuse comprises a connecting spring and an insulating wire, one end, connected with the connecting spring, of the insulating wire is provided with a lantern ring, the connecting spring is provided with a pull ring buckle connected with the lantern ring in a sleeved mode, and the high-voltage fusing protection device has the technical effect of being capable of effectively improving stability and reliability of high-voltage fusing protection.

Description

Technical Field

[0001] This utility model relates to the field of circuit protection devices, and in particular to a fuse for a plate ozone generator. Background Technology

[0002] The plate ozone generator consists of several discharge plate units connected in parallel. When one unit fails, the corresponding fuse will blow, automatically shutting down the generator, while the other units can continue to operate. The high-voltage feeder is connected to the high-voltage electrode inside the discharge chamber via a high-voltage fuse, thus connecting the high-voltage busbar to each discharge chamber.

[0003] To extinguish the arc upon fuse failure, high-voltage fuses often employ a long filament structure. The longer the fuse, the longer the fusing interval, and the stronger the arc-extinguishing capability. However, due to uncontrollable factors, sometimes the fusing interval is insufficient after fuse failure. Under the application of high voltage, the arc continues to run. This continuous arcing generates heat, which can melt through the ceramic casing and carbonize nearby materials. These carbonized materials are conductive, expanding the arc range and potentially causing a fire. This directly leads to an unstable and unreliable high-voltage protection effect of the fuse. Utility Model Content

[0004] The purpose of this invention is to provide a fuse for a plate ozone generator, which has the advantage of improving the stability and reliability of the high-voltage protection effect of the fuse.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a fuse for a plate ozone generator, comprising a ceramic shell and a fuse disposed within the shell, wherein insulating sleeves are movably fitted at both ends of the ceramic shell, the insulating sleeves comprising a rubber sleeve interface and a wire harness opening, the diameter of the wire harness opening being smaller than that of the rubber sleeve interface, a through groove is provided in the middle of the ceramic shell, and high-voltage terminals are movably connected to both ends of the through groove, the fuse being connected between the high-voltage terminals, the fuse comprising a connecting spring and an insulating wire, wherein a collar is provided at one end of the insulating wire connected to the connecting spring, and a pull ring buckle is provided on the connecting spring for engaging with the collar.

[0006] Preferably, the ceramic outer shell includes an outer shell sleeve and an end insert, wherein the end insert is movably sleeved with the outer shell sleeve.

[0007] Preferably, a ceramic reinforcing sleeve is also fitted on the outer wall of the ceramic shell located at the location of the insulating wire, and an insulating cavity is provided between the ceramic reinforcing sleeve and the ceramic shell.

[0008] Preferably, the high-voltage terminal is threaded to the end of the ceramic housing.

[0009] Preferably, the inner diameter of the through groove in the ceramic shell satisfies the condition that the diameters at both ends are greater than the diameter in the middle.

[0010] Preferably, the ceramic shell is provided with an anti-detachment ring at its end, and the inner wall of the insulating sleeve is provided with a limiting ring groove that cooperates with the anti-detachment ring.

[0011] In summary, this utility model has the following beneficial effects:

[0012] 1. The ceramic housing ensures a sufficiently large fusing interval. One end of the fuse is tightened by a connecting spring. When the fuse blows, the fusing interval is quickly widened to prevent accidental insufficient interval, thus achieving a fast and stable power-off protection effect and ensuring the stable and reliable operation of the fuse. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the fuse in the embodiment.

[0014] Reference numerals: 1. Ceramic housing; 2. Fuse; 3. Insulating sleeve; 4. Rubber sleeve interface; 5. Cable tie; 6. Through slot; 7. High voltage terminal; 8. Connecting spring; 9. Insulating wire; 10. Collar; 11. Pull ring buckle; 12. Housing sleeve block; 13. End insert block; 14. Ceramic reinforcing sleeve; 15. Insulating cavity; 16. Anti-detachment ring; 17. Limiting ring groove. Detailed Implementation

[0015] The present invention will be further described in detail below with reference to the accompanying drawings.

[0016] Example: A fuse for a plate-type ozone generator, such as Figure 1 As shown, it includes a ceramic housing 1 and a fuse 2 installed inside the housing. Under normal operating conditions, high-voltage current passes through the fuse 2 inside the ceramic housing 1. Once the circuit current is overloaded, the fuse 2 will break the circuit for protection.

[0017] A through groove 6 is provided in the middle of the ceramic housing 1. High-voltage terminals 7 are movably connected to both ends of the through groove 6. The high-voltage terminals 7 are screwed tightly to the ends of the ceramic housing 1. A fuse 2 is connected between the high-voltage terminals 7. The input high-voltage line is connected to one end of the high-voltage terminal 7 and then to the other end of the high-voltage terminal 7 through the fuse 2, forming a complete high-voltage current path. The ceramic housing 1 ensures the high-voltage resistance performance of the fuse. Insulating sleeves 3 are movably fitted at both ends of the ceramic housing 1. An anti-detachment ring 16 is provided at the end of the ceramic housing 1. The inner wall of the insulating sleeve 3 is provided with a limiting ring groove 17 that cooperates with the anti-detachment ring 16. The engagement of the limiting ring groove 17 and the anti-detachment ring 16 restricts the movement and detachment of the insulating sleeve 3 from the ceramic housing 1.

[0018] The insulating sleeve 3 includes a rubber sleeve interface 4 and a wire harness opening 5. The diameter of the wire harness opening 5 is smaller than that of the rubber sleeve interface 4, which ensures the isolation and protection effect between the line and the wiring part of the terminal block. The setting of the wire harness opening 5 also forms a limiting and fastening effect for the external line, ensuring the reliable electrical connection state of the high voltage terminal block 7.

[0019] Considering that existing fuses, due to insufficient fusing interval, continue to arc under high voltage when blown, generating heat and compromising the reliability of the actual fuse 2, this fuse 2 includes a connecting spring 8 and an insulating wire 9. One end of the insulating wire 9 connected to the connecting spring 8 is equipped with a collar 10. The connecting spring 8 has a pull ring 11 that engages with the collar 10. The connecting spring 8 ensures that, under normal conditions, it remains stretched and taut, forming a circuit with the insulating wire 9. The ceramic housing 1 includes a housing block 12 and an end plug 13, which are movably fitted into the housing block 12. The tautness of the connecting spring 8 keeps the end plug 13 stably inserted into the housing block 12. Once the insulating wire 9 melts, the connecting spring 8 contracts under its elastic restoring potential energy, quickly separating the broken short wires of the insulating wire 9 to both ends, effectively solving the high-voltage arcing phenomenon that may result from insufficient fusing interval. The synchronous end plug 13 can move relative to the outer casing block 12. With the contraction inertia of the connecting spring 8, the fuse gap can be further improved, and it is also convenient for subsequent users to check and judge the internal condition of the fuse. Once the end plug 13 and the outer casing block 12 can be freely inserted and removed, the fuse has blown.

[0020] To further improve the separation effect after the fuse breaks, the end collar 10 of the insulating wire 9 is sleeved with the pull ring buckle 11. Once the insulating wire 9 breaks, the broken wire part connected to the connecting spring 8 can fall vertically downward due to the movable sleeve state, and quickly separate from the other section of the insulating wire 9, reducing the arcing effect during the subsequent contraction of the connecting spring 8.

[0021] Considering that the local arcing caused by the melting of the insulating wire 9 will generate a great deal of heat, the inner diameter of the through groove 6 in the ceramic shell 1 is such that the diameters at both ends are greater than the diameter in the middle, ensuring the wall thickness in the middle of the ceramic shell 1; and a ceramic reinforcing sleeve 14 is also fitted on the outer wall of the ceramic shell 1 where the insulating wire 9 is located. An insulating cavity 15 is provided between the ceramic reinforcing sleeve 14 and the ceramic shell 1, which enhances the high temperature resistance during the arcing process and also improves the insulation performance during the high voltage discharge process, further effectively improving the safety and reliability of the fuse.

[0022] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A fuse for a plate-type ozone generator, comprising a ceramic housing (1) and a fusible link (2) disposed within the housing, characterized in that: Insulating sleeves (3) are movably fitted at both ends of the ceramic shell (1). The insulating sleeves (3) include a rubber sleeve interface (4) and a wire harness opening (5). The diameter of the wire harness opening (5) is smaller than that of the rubber sleeve interface (4). A through groove (6) is provided in the middle of the ceramic shell (1). High-voltage terminals (7) are movably connected to both ends of the through groove (6). A fuse (2) is connected between the high-voltage terminals (7). The fuse (2) includes a connecting spring (8) and an insulating wire (9). A collar (10) is provided at one end of the insulating wire (9) connected to the connecting spring (8). A pull ring buckle (11) is provided on the connecting spring (8) and engages with the collar (10).

2. The fuse for a plate ozone generator according to claim 1, characterized in that: The ceramic shell (1) includes a shell sleeve (12) and an end insert (13), wherein the end insert (13) is movably sleeved with the shell sleeve (12).

3. The fuse for a plate ozone generator according to claim 1, characterized in that: A ceramic reinforcing sleeve (14) is also fitted on the outer wall of the ceramic shell (1) where the insulating wire (9) is located, and an insulating cavity (15) is provided between the ceramic reinforcing sleeve (14) and the ceramic shell (1).

4. A fuse for a plate-type ozone generator according to claim 1, characterized in that: The high-voltage terminal (7) is threaded to the end of the ceramic housing (1).

5. A fuse for a plate ozone generator according to claim 1, characterized in that: The inner diameter of the through groove (6) in the ceramic shell (1) satisfies that the diameters of the two ends of the groove are greater than the diameter of the middle groove.

6. A fuse for a plate ozone generator according to claim 1, characterized in that: The ceramic shell (1) is provided with an anti-detachment ring (16) at its end, and the inner wall of the insulating sleeve (3) is provided with a limiting ring groove (17) that cooperates with the anti-detachment ring (16).

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