CN113097028A

CN113097028A - Circuit self-recovery fuse

Info

Publication number: CN113097028A
Application number: CN202110379431.3A
Authority: CN
Inventors: 刘甲利; 刘林
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-08
Filing date: 2021-04-08
Publication date: 2021-07-09

Abstract

The invention discloses a circuit self-recovery fuse, which comprises a fuse box, wherein a horizontal sliding plate is connected in the fuse box in a sliding manner, the bottom of the sliding plate is fixedly connected with a spring, the lower end of the spring is fixedly connected with the inner wall of the bottom of the fuse box, conductive layers are embedded on the inner walls of two sides of the fuse box, the two conductive layers are respectively connected to a home zero line in a household circuit, and resistive layers are embedded on the inner walls of two sides of the fuse box below the conductive layers. Has the advantages that: in the overcurrent occurrence process, a large temperature difference is generated between the inner wall of the fixing box and the inner wall of the fusing box, the time temperature difference power generation sheet generates current to supply power to the loudspeaker, an alarm is given out to remind a user in time, the temperature difference generated by overload current and short-circuit current is large, the generated current values are different, and the user can overload or short-circuit according to the sound size of the loudspeaker to check and repair in time.

Description

Circuit self-recovery fuse

Technical Field

The invention relates to the technical field of power equipment, in particular to a circuit self-recovery fuse.

Background

The fuse is an electric appliance which fuses a melt by heat generated by itself to open a circuit when a current exceeds a predetermined value. The fuse melts the melt by the heat generated by the fuse after the current exceeds a specified value for a period of time, so as to cut off the circuit; the fuse protector made by the principle is widely applied to high-low voltage distribution systems, control systems and electric equipment, and is one of the most commonly applied protective devices as a short circuit and overcurrent protector.

In the case of household appliances, generally, overcurrent may occur mainly due to overload and short circuit of the circuit, the overload current is caused by too many appliances and can be used continuously after some appliances are turned off, and the short circuit current is caused by a short circuit phenomenon generated inside the appliances and can be used continuously only by repairing the appliances, but the existing fuse cannot distinguish the overload current from the short circuit current and cannot perform more effective circuit protection; to this end, we propose a circuit self-recovery fuse.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a circuit self-recovery fuse.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a circuit self-resuming fuse, includes the fusing case, sliding connection has a horizontally slide in the fusing case, a spring of bottom fixedly connected with of slide, the lower extreme of spring and the bottom inner wall fixed connection of fusing case, all inlay on the both sides inner wall of fusing case and be equipped with the conducting layer, two on the zero line of registering one's residence that the conducting layer inserts the family circuit respectively, the fusing case is located the both sides inner wall of conducting layer below and all inlays and is equipped with the resistance layer, the conducting layer is connected with the contact of resistance layer, a busbar has been buried underground in the slide.

In foretell circuit self recovery fuse, the fixed box of inner wall top fixedly connected with of fusing case, fixed box inner seal sliding connection has the piston plate, the vertical welding in bottom surface of piston plate has a depression bar, the lower extreme of depression bar runs through the up end counterbalance of fixed box and slide, be equipped with the electric plate on the top box wall of fixed box before, on the electric plate inserts the fire line of registering one's residence in the family circuit, the fixed box is located piston plate top space packing has the evaporating liquid.

In foretell circuit self recovery fuse, the bottom of slide inlays and is equipped with first magnetic sheet, be equipped with the second magnetic sheet before on the bottom inner wall of fusing case, magnetism between first magnetic sheet and the second magnetic sheet attracts mutually.

In foretell circuit self recovery fuse, two slide openings, every have been seted up to the bottom of fusing case sliding connection has a slide bar in the slide opening, two the slide bar is located the common fixedly connected with control panel of the outer one end of fusing case, every the slide bar is located fusing incasement one end fixedly connected with stopper.

In foretell circuit self recovery fuse, inlay on the inner wall of fusing case and be equipped with the thermoelectric generation piece, the one end that the fuse incasement wall was kept away from to the thermoelectric generation piece extends in the fixed box, be provided with loudspeaker on the outer wall of fusing case, the thermoelectric generation piece passes through the wire and is connected with loudspeaker electricity.

Compared with the prior art, the invention has the advantages that:

1. when overload current occurs in a household circuit, the current value exceeds the rated value of the electric heating plate and is smaller, the temperature of the electric heating plate is gradually increased, evaporation liquid in the fixed box is heated and vaporized, the volume is increased, the piston plate and the pressing rod are pushed to slide downwards, and the protective plate moves downwards when pressure is applied to the sliding plate, so that a conductive strip in the sliding plate is in contact connection with the resistance layers on two sides, namely, a protective resistor is connected in series in the circuit, the current value in the circuit is reduced, and the current reduction protective effect is achieved;

2. after the fuse makes a current reducing reaction to the overload circuit, the force-bearing direction of the sliding plate is upward and is abutted against the pressure lever, the use number of electric appliances is reduced, the circuit load is reduced, the evaporated liquid gas in the fixed box is naturally cooled and liquefied, the piston plate slides back, the pressure of the pressure lever disappears, the elastic force borne by the sliding plate is greater than the magnetic force, the sliding plate moves upwards to return to the original balance position and is in contact with the conductive layer again, the circuit is restored to the normal state, the self-restoring characteristic is realized, and the manual operation control is not needed;

3. when a short circuit occurs, the value of the short circuit current can reach hundreds to thousands of times of the normal current, and the generated high temperature instantaneously vaporizes all the evaporated liquid in the fixed box, so that the sliding plate is pushed to directly cross the second balance point from the first balance point, on one hand, the power is cut off in time for protection, and on the other hand, the position of the sliding plate can not be automatically recovered under the action of no external force, so that the short circuit problem is not solved, the sliding plate 6 is prevented from sliding back to be electrified again, and the electric appliance is prevented from being damaged and even the danger of fire is avoided;

4. in the overcurrent occurrence process, a large temperature difference is generated between the inner wall of the fixing box and the inner wall of the fusing box, the time temperature difference power generation sheet generates current to supply power to the loudspeaker, an alarm is given out to remind a user in time, the temperature difference generated by overload current and short-circuit current is large, the generated current values are different, and the user can overload or short-circuit according to the sound size of the loudspeaker to check and repair in time.

Drawings

FIG. 1 is a schematic diagram of a self-recovery fuse according to the present invention;

fig. 2 is a schematic diagram illustrating a relationship between an elastic force of a spring and a magnetic force and a distance between two magnetic plates in the self-recovery fuse of the present invention.

In the figure: 1 fusing box, 2 fixed box, 3 piston plate, 4 electric hot plate, 5 depression bars, 6 slides, 7 springs, 8 conducting strips, 9 conducting layers, 10 resistive layers, 11 first magnetic plates, 12 second magnetic plates, 13 slide holes, 14 slide bars, 15 control panels, 16 limiting blocks, 17 thermoelectric generation pieces and 18 loudspeakers.

Detailed Description

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are only for illustrative purposes and are not intended to limit the scope of the present invention.

Examples

Referring to fig. 1-2, a circuit self-recovery fuse, including fuse box 1, sliding connection has a horizontally slide 6 in fuse box 1, a spring 7 of bottom fixedly connected with of slide 6, the lower extreme of spring 7 and fuse box 1's bottom inner wall fixed connection, all inlay on fuse box 1's both sides inner wall and be equipped with conducting layer 9, two conducting layers 9 insert the zero line of registering one's residence in the family's circuit respectively, fuse box 1 is located both sides inner wall of conducting layer 9 below and all inlays and is equipped with resistance layer 10, conducting layer 9 is connected with resistance layer 10 contact, a busbar 8 has been buried underground in slide 6, slide 6's bottom is inlayed and is equipped with first magnetic sheet 11, fuse box 1's bottom inner wall is equipped with second magnetic sheet 12 on the front, magnetism between first magnetic sheet 11 and the second magnetic sheet 12 attracts mutually.

Fuse box 1's inner wall top fixedly connected with fixed box 2, fixed box 2 internal seal sliding connection has piston plate 3, the vertical welding in bottom surface of piston plate 3 has a depression bar 5, the lower extreme of depression bar 5 runs through fixed box 2 and offsets with the up end of slide 6, be equipped with electric plate 4 on the top box wall of fixed box 2 before, on the house fire line of electric plate 4 access family circuit, electric plate 4 is lower when the numerical value that is in rated range through the electric current, produce unusual high temperature and react rapidly when exceeding the rated value, fixed box 2 is located that piston plate 3 top space packing has the evaporative liquid, the evaporative liquid adopts the kerosene liquid that the boiling point is 150 ℃.

Two slide holes 13 have been seted up to the bottom of fusing case 1, and sliding connection has a slide bar 14 in every slide hole 13, and two slide bars 14 are located the common fixedly connected with control panel 15 of the outer one end of fusing case 1, and every slide bar 14 is located fusing case 1 one end fixedly connected with stopper 16.

Inlay on fusing case 1's the inner wall and be equipped with thermoelectric generation piece 17, thermoelectric generation piece 17 is kept away from fusing case 1 inner wall's one end and is extended in fixed box 2 of extension, is provided with loudspeaker 18 on fusing case 1's the outer wall, and thermoelectric generation piece 17 passes through the wire and is connected with loudspeaker 18 electricity.

In the invention, the k value curve of the elastic force and the compression amount of the spring 7 is approximate to a linear function, and the magnetic force and the distance between the first magnetic plate 11 and the second magnetic plate 12 present a quadratic function relationship, so that an N-S coordinate graph has two intersection points, namely two balance points are generated when the sliding plate 6 is acted by the elastic force and the magnetic force, the sliding plate 6 is arranged at the second balance point in a normal state, two ends of the sliding plate 6 are in contact connection with the conductive layers 9 on two sides, and a household circuit is normally electrified.

When overcurrent occurs in a household circuit, the current value exceeds the rated value of the electric heating plate 4 and is smaller, the temperature of the electric heating plate 4 gradually rises, evaporated liquid in the fixed box 2 is heated and vaporized, the volume is increased to push the piston plate 3 and the pressure rod 5 to slide downwards, so that the protective plate 6 moves downwards when pressure is applied to the sliding plate 6, the conductive strips 8 in the sliding plate 6 are in contact connection with the resistive layers 10 on two sides, namely, a protective resistor is connected in series in the circuit to reduce the current value in the circuit and achieve the current reduction protection effect, the elastic force of the sliding plate 6 at the position is greater than the magnetic force, the force direction of the sliding plate 6 is upwards abutted against the pressure rod 5, after the using number of electrical appliances is reduced, the load of the circuit is reduced, after the current value in the circuit is reduced and is lower than the rated value of the electric heating plate 4, the evaporated liquid gas in the fixed box 2 is cooled and liquefied, the piston plate 3 slides back, the pressure of the, the circuit is recovered to a normal state, the circuit has the characteristic of self recovery, and the circuit is more convenient to operate and control without manual work.

When a short circuit occurs in a circuit, the short circuit current value flowing through the electric heating plate 4 can reach hundreds to thousands of times of the normal current instantly, the generated high temperature instantly vaporizes all the evaporated liquid in the fixed box 2, the sliding plate is pushed to slide to the bottom through the piston plate 3 and the pressure rod 5, the sliding plate 6 directly crosses the second balance point from the first balance point, the conductive strip 6 is separated from the conductive layer 9 and the resistance layer 101, the household circuit is powered off in time, the danger is avoided, then the evaporated liquid cooling pressure rod 5 retracts, the sliding plate 6 cannot recover automatically without external force, the advantage is that when the short circuit problem is not solved, the sliding plate 6 is prevented from sliding back to be electrified again, the damage of an electric appliance and the danger of fire are avoided, the temperature in the fixed box 2 is rapidly increased in the overcurrent occurrence process, and a large temperature difference is generated between the inner wall of the fixed box 2 and the inner wall of the fusing box 1, then the inside electron that has of thermoelectric generation piece 17 flows to same direction for loudspeaker 18 sends out the police dispatch newspaper after circular telegram and in time reminds the user, because the temperature that overcurrent and short-circuit current produced differs great, then the current value is different, and the user can be according to loudspeaker 18's sound size difference be overload or the short circuit, carries out in time inspection and restores.

After the short circuit problem is completely solved, a user can push the control board 15 upwards, an upward force is applied to the sliding plate 6 through the two sliding rods 14, the difference between the magnetic force and the elastic force applied to the sliding plate 6 is exceeded, the sliding plate 6 moves to a second balance point, the conducting strips 8 are in contact with the conducting layer 9 again, and the fuse is electrified to restore the normal working state.

Although the terms of the fuse box 1, the fixing box 2, the piston plate 3, the electric heating plate 4, the pressing rod 5, the sliding plate 6, the spring 7, the conductive strip 8, the conductive layer 9, the resistive layer 10, the first magnetic plate 11, the second magnetic plate 12, the sliding hole 13, the sliding rod 14, the control plate 15, the stopper 16, the thermoelectric generation sheet 17, the speaker 18, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. The utility model provides a circuit self-resuming fuse, includes fusing case (1), its characterized in that, sliding connection has a horizontally slide (6) in fusing case (1), bottom fixedly connected with spring (7) of slide (6), the lower extreme of spring (7) and the bottom inner wall fixed connection of fusing case (1), all inlay on the both sides inner wall of fusing case (1) and be equipped with conducting layer (9), two conducting layer (9) insert respectively on the zero line of registering one's residence in the family's circuit, fusing case (1) is located the both sides inner wall of conducting layer (9) below and all inlays and be equipped with resistive layer (10), conducting layer (9) are connected with resistive layer (10) contact, a busbar (8) have been buried underground in slide (6).

2. The circuit self-recovery fuse according to claim 1, characterized in that a fixed box (2) is fixedly connected to the top of the inner wall of the fuse box (1), a piston plate (3) is connected to the fixed box (2) in a sliding and sealing manner, a pressure rod (5) is vertically welded to the bottom surface of the piston plate (3), the lower end of the pressure rod (5) penetrates through the fixed box (2) and abuts against the upper end face of a sliding plate (6), an electric heating plate (4) is arranged on the top box wall of the fixed box (2) in front, the electric heating plate (4) is connected to an indoor fire line in a household circuit, and the space above the piston plate (3) of the fixed box (2) is filled with an evaporative liquid.

3. A circuit self-recovery fuse as per claim 1, characterized in that the bottom of said sliding plate (6) is embedded with a first magnetic plate (11), the inner wall of the bottom of said fuse box (1) is equipped with a second magnetic plate (12), and the magnetism between said first magnetic plate (11) and said second magnetic plate (12) attracts each other.

4. The circuit self-recovery fuse according to claim 1, wherein the bottom of the fuse box (1) is provided with two sliding holes (13), each sliding hole (13) is slidably connected with a sliding rod (14), one end of each sliding rod (14) located outside the fuse box (1) is fixedly connected with a control board (15), and one end of each sliding rod (14) located inside the fuse box (1) is fixedly connected with a limit block (16).

5. The circuit self-recovery fuse according to claim 2, wherein a thermoelectric generation piece (17) is embedded on the inner wall of the fuse box (1), one end of the thermoelectric generation piece (17) far away from the inner wall of the fuse box (1) extends into the fixed box (2), a loudspeaker (18) is arranged on the outer wall of the fuse box (1), and the thermoelectric generation piece (17) is electrically connected with the loudspeaker (18) through a wire.